Relevant bibliographies by topics / Beam with Openings

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Beam with Openings'

Author: Grafiati
Published: 4 June 2025
Last updated: 15 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Beam with Openings.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Beam with Openings"

1

Hieu, Nguyen Trung, and Pham Xuan Dat. "Experimental study on the effectiveness of strengthening of reinforced concrete beams with opening in shear span using CFRP sheets." Journal of Science and Technology in Civil Engineering (JSTCE) - HUCE 18, no. 1 (2024): 1–11. http://dx.doi.org/10.31814/stce.huce2024-18(1)-01.

Full text
Abstract:
In reinforced concrete beams, the opening is frequently required for the passage of utility ducts and/or pipes. The presence of such web openings leads to a reduction of the strength and stiffness of the beam. To ensurethe safety of the reinforced concrete beam, a strengthening system around the opening is necessary. This paperaims to contribute to a better understanding of the shear behavior of reinforced concrete beams with openingsin the shear span, strengthened with Carbon fiber-reinforced polymer (CFRP) sheets. The study is based on anexperimental program carried out on six beams. All beam specimens were 850 mm long with a cross-sectionof 150 × 250 mm and a shear span to beam depth ratio (a/d) of 1.48. One beam without any openings served asthe control specimen, while the remaining five beams featured circular or rectangular openings within the shearspan and with/without shear strengthening using CFRP sheets around the openings. The test results obtainedfrom this experimental program provide insights into the shear behavior of beams with openings, both with andwithout strengthening using CFRP sheets. Additionally, the potential advantages and effectiveness of employingCFRP strengthening techniques for opening strengthening are investigated and discussed.
APA, Harvard, Vancouver, ISO, and other styles
2

Waleed Kh. Hadi and May J. Hamoodi. "Experimental Study on Composite Beams with Circular Web Openings." University of Thi-Qar Journal for Engineering Sciences 5, no. 1 (2014): 43–54. http://dx.doi.org/10.31663/utjes.v5i1.611.

Full text
Abstract:
The behavior of composite beams with circular web openings is described. Four composite beams comprising one control beam were tested. The perforated beams have six circular openings with various locations. Opening size was fixed (66.7% of the steel section web depth) while number of openings in each composite beam was varied. Deflections at midspan and at openings were observed. Cracking of concrete slab and behavior of each opening were explained in detail. Tests indicated that circular web opening reduced the strength of composite beams. The behavior of composite beams relatively unaffected by the presence of circular web openings up to first yield. Less effect for the inclusion of circular web openings located out of midspan. The concrete slab has limited contribution to the strength of composite beams with circular web openings.
APA, Harvard, Vancouver, ISO, and other styles
3

Branesh Robert, J., R. Angeline Prabhavathy, P. S. Joanna, et al. "Flexural Behaviour of RC Beams with a Circular Opening at the Flexural Zone and Shear Zone Strengthened Using Steel Plates." Advances in Civil Engineering 2021 (December 2, 2021): 1–12. http://dx.doi.org/10.1155/2021/6733402.

Full text
Abstract:
In this paper, an investigation on the behaviour of RC beams with circular openings in the flexural zone and shear zone strengthened using steel plates is presented. Totally seven beams were cast: a control beam, one beam with a circular opening of size of one-third the depth of the beam (100 mmϕ) in the flexural zone, one beam with opening strengthened using the steel plate, one beam with a circular opening of size of 100 mmϕ in the shear zone, one beam with an opening in the shear zone strengthened using the steel plate, one beam with two circular openings of size of 100 mmϕ in the shear zone, and another beam with two openings in the shear zone strengthened using the steel plate. The experiments were conducted in a loading frame of 400 kN capacity. The beams were subjected to two-point loading. The ultimate load carrying capacity reduced marginally by 1.78% and 2.8% compared to that of the control beam when a circular opening of 100 mmϕ was provided in the flexural zone and shear zone, respectively, and when the opening was strengthened with steel plates, it reduced by 3.04% and 25%, respectively, but the ductility increased when steel plates were provided. Beams with an opening of size of one-third the depth of the beam (100 mmϕ) in the flexural zone strengthened with the steel plate can be provided, as the load carrying capacity is only marginally reduced compared to the control beam, and the ductility is more when compared with beams with unstrengthened openings.
APA, Harvard, Vancouver, ISO, and other styles
4

Mohammed, Tesfaye Alemu, and Tensae Alebachew. "NUMERICAL INVESTIGATION OF AS-BUILT AND CARBON FIBER REINFORCED POLYMER RETROFITTED REINFORCED CONCRETE BEAM WITH WEB OPENINGS UNDER IMPACT LOADING." ASEAN Engineering Journal 12, no. 1 (2022): 173–82. http://dx.doi.org/10.11113/aej.v12.17521.

Full text
Abstract:
It is not uncommon to provide openings in beams due to utility needs such as mechanical, electrical and sewerage passages. However, no clear guidelines are available in code of practice to handle beam web openings and presence of openings in beams changes behavior of Reinforced Concrete beam into a more complicated one. This research work investigates response of RC beam with openings under impact loading and proposes application of carbon fiber reinforced polymer (CFRP) composites to restore lost beam performance due to the presence of web openings. 3D nonlinear finite element software LS-DYNA is used for model development, validation and parametric finite element analysis work. The accuracy of the nonlinear finite element models are verified using experimental results from literature. Further parametric studies are performed to optimize beam web openings on opening location, size and CFRP no. of layers and fiber orientation. Numerical results showed as compared to control, large opening cutouts in RC beam decreased impact resistance of a beam by 54%. Also, RC beam exhibited poor impact loading resistance close to loading point (mid span) and performed good near shear zone. As compared to control as-built RC beam, Carbon Fiber Reinforced Polymer (CFRP) composites strengthening reduced mid span deflection by 74% and improved beams brittle failure mode. Also, 900 fiber orientation complete wrapping resulted in reduction of shear cracking around opening however exhibited low overall impact resistance as compared with 0º fiber orientation.
APA, Harvard, Vancouver, ISO, and other styles
5

Ali, Hasan Hussein, and Abdul Muttailb I. Said. "Flexural behavior of concrete beams with horizontal and vertical openings reinforced by glass-fiber-reinforced polymer (GFRP) bars." Journal of the Mechanical Behavior of Materials 31, no. 1 (2022): 407–15. http://dx.doi.org/10.1515/jmbm-2022-0045.

Full text
Abstract:
Abstract This study conducted an analytical investigation on the behavior of concrete beams with openings reinforced by glass-fiber-reinforced polymer (GFRP) bars. In this study, five proposed beams reinforced by GFRP bars as flexural and shear reinforcement with openings were numerically examined. The variables were the opening orientation (vertical and horizontal) and the number of openings. These openings were located within the flexural zone of the proposed beams. The result shows that the vertical openings had a significant effect over the horizontal openings on reducing the ultimate load and increasing the mid-span deflection compared with the control beam. Moreover, the results showed that when replacing two adjacent openings by one equivalent opening, the capacity of the beam is decreased.
APA, Harvard, Vancouver, ISO, and other styles
6

Hamid, N. A. A., N. Salleh, N. Ali, et al. "Strengthening RC beams with circular post-opening in shear zone by externally bonded CFRP." IOP Conference Series: Earth and Environmental Science 1347, no. 1 (2024): 012073. http://dx.doi.org/10.1088/1755-1315/1347/1/012073.

Full text
Abstract:
Abstract An installation of post-drilled openings in existing reinforced concrete (RC) beams may result in an abrupt change in the beam’s cross-sectional dimensions, which could reduce the beam’s capacity and integrity of the beam. A variety of methods have been developed to adequately reinforce the area around the opening. This study investigates the efficacy of Carbon Fibre Reinforced Polymer (CFRP) sheets for strengthening RC beams with circular post-opening at shear zones. A total of five beams measuring 150 mm width, 300 mm depth and 1550 mm length were casted and tested under four-point load until failure. The beams were consisted of one solid beam used as a control beam, two beams having 100 mm diameter circular openings and another two beams were strengthened using externally bonded CFRP sheets around the openings. The ultimate load capacities, deflections, strain distributions, cracking propagation and failure modes of the tested beams were measured and compared. According to the test results, beams with openings had lower load capacity and less stiffness compared to solid beam. Increasing the number of openings significantly reduced the ultimate load of the beams up to 25%. There are also significant differences between beams without and with strengthening in terms of beam capacity, stiffness and strain distribution.
APA, Harvard, Vancouver, ISO, and other styles
7

Chirag Ka Patel and Dr. R. K. Sheth. "Performance of Reinforced Concrete Beams with Rectangular Opening in Flexural and Shear Zone." International Research Journal on Advanced Engineering Hub (IRJAEH) 2, no. 07 (2024): 1937–44. http://dx.doi.org/10.47392/irjaeh.2024.0265.

Full text
Abstract:
Transverse openings in reinforced concrete beams use to house the utility services like electricity cable, Internet cable, air-conditioning pipe, fire safety pipe line and water-drainage system. These beams opening pipe line system are usually placed underneath the soffit of the beam in term of dead space. This height of dead space that increase the overall building height. Beam opening in the reinforced concrete beams significantly decreases the ultimate load carrying capacity of beam. Transverse beam opening in the web portion of beam produces discontinuities in the usual flow of stresses and that leading stress concentration around the opening region. The importance of this study is to evaluate the performance of reinforced concrete beam with varying size rectangular opening at flexure and shear location ware investigated. A nonlinear finite element analysis was conducted to investigate the effects of different size openings, in terms of ultimate load carrying capacity, Elemental Stresses, load-deflection plot, crack pattern. The work involves investigating performance of different size of small and large rectangular opening. This paper gives new challenges for engineering practice which is in the field of strengthening of concrete structures especially in transverse RC beams with rectangular openings.
APA, Harvard, Vancouver, ISO, and other styles
8

Abed Shnait, Masharq, and Amer F. Izzet. "Flexural Behavior of Reinforced Concrete Beams with Steel-Plate Reinforced Vertical Opening." Civil Engineering Journal 10, no. 9 (2024): 2820–38. http://dx.doi.org/10.28991/cej-2024-010-09-04.

Full text
Abstract:
The structural response of simply supported Reinforced Concrete (RC) beams with square vertical openings is investigated in this work. Studies were conducted using seven specimens of RC beams, with the aim of comparing beams with vertical openings to those without. Meanwhile, the other beams featured carefully positioned square openings. Note that one of these beams served as the control and had no openings. Each beam was the same length (1400 mm) with a 180×120 mm cross-section. Two-point loads were applied over a span of 1200 mm throughout the testing method, with a central load placed 300 mm from the ends. The openings were positioned in the middle of the span and came in three different widths: 20, 40, and 60 mm. Openings were made using either 1.5 mm thick square steel tubing or none at all. The major goal of this study was to determine whether the steel tube could compensate for the decrease in beam strength and the impact of decreasing beam cross-section (producing opening). Correspondingly, the beam ultimate load was found to decrease by 15.75%, 24.2%, and 32.5% for opening widths of 20 mm, 40 mm, and 60 mm, respectively, as the opening width increased. On the other hand, the performance gain for beams strengthened with steel plates when steel tubes were used was 11.78%, 12.14%, and 13.28% for the respective opening widths. Doi: 10.28991/CEJ-2024-010-09-04 Full Text: PDF
APA, Harvard, Vancouver, ISO, and other styles
9

Aziz, Ali H., and Awadh E. Ajeel. "EFFECT OF EXISTING FLANGE OPENINGS AND COLD JOINTS ON STRENGTH OF RC T-BEAMS." Journal of Engineering 16, no. 01 (2010): 4535–46. http://dx.doi.org/10.31026/j.eng.2010.01.11.

Full text
Abstract:
In the construction of modern buildings, a network of pipes and ducts is necessary to accommodate essential services like water supply, sewage, air-conditioning, electricity, telephone, and computer network. Passing these services vertically required creating openings in slab (Flanges of T-Beams) after or before construction.New researches show that the concrete flanges provide a certain level of shear resistance above a certain width. Therefore, due to existing of these openings or cold joints in slab (Flange) and abrupt changes in the sectional configuration, opening corners are subject to high stress concentration that may lead to reduction in stiffness of the T-Beam and produced cracking and excessive deflection.In the present research, shear behavior of reinforced concrete T-Beams which contains vertical opening (Flange openings) or cold joints at the flanges are studied as well as the effect of openings or cold joints locations. Eight beams were tested, one of which were constructed without any openings or cold joints (reference beam), while, the others were constructed with openings or cold joints in different locations.Experimental results show that the presence of flange openings reduce the shear capacity about (22% to 32%) for beams containing one opening and about (17%-39%) for beams containing two openings. For beams containing cold joints, the shear capacity decreased about (27%) in comparison with reference beam.
APA, Harvard, Vancouver, ISO, and other styles
10

Ali, Hasan Hussein, and Abdulmuttailb I. Said. "Experimental Study on the Performance of Concrete Beams Including Holes Reinforced with Glass Fiber Polymer." E3S Web of Conferences 427 (2023): 02010. http://dx.doi.org/10.1051/e3sconf/202342702010.

Full text
Abstract:
This paper carried out An examination of the performance characteristics of concrete beams including openings that were reinforced with Glass Fiber Reinforced Polymer (GFRP) bars. This investigation studied five reinforced concrete (RC) beams with both longitudinal and transverse GFRP reinforcement with openings in two directions (horizontal and vertical) were studied. Both the orientation of the openings and the number of openings were considered to be the main parameters in this research. These holes are located in the beams' flexural region. The results demonstrate that relative to the reference beam, the vertical openings significantly reduced the maximum load of the tested beams by 27.8% and increased the mid-span displacement by 39% relative to the control beam. In addition, the research results demonstrated that the strength of the beam was scaled down if one equivalent opening was used to substitute for two adjacent openings.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Beam with Openings"

1

Najafi, Mohsen. "Behaviour of axially restrained steel beams with web openings at elevated temperatures." Thesis, University of Manchester, 2014. https://www.research.manchester.ac.uk/portal/en/theses/behaviour-of-axially-restrained-steel-beams-with-web-openings-at-elevated-temperatures(7e807ad7-5d5b-4635-ad39-7eae448736d8).html.

Full text
Abstract:
Steel beams with web openings are frequently used in construction to achieve attractive, flexible and optimised design solutions. These beams are used to provide passages for building services, to reduce the overall construction height and to achieve long spans. However, the presence of the openings may lead to a substantial reduction in the load carrying capacity of the beam at both ambient and elevated temperatures and introduce additional failure modes including shear-moment interaction at the location of the openings causing the Vierendeel mechanism. Steel beams in practical construction are axially restrained and the presence of this axial restraint can drastically change the behaviour of the beams in comparison to those without axial restraint. One particular issue is premature buckling of the compressive tee-sections around the openings. The aim of this research is to investigate the effects of openings on axially restrained steel beams at elevated temperatures so as to develop an analytical method for design consideration. The analytical derivation will be based on the results of extensive numerical simulations. The research starts with the behaviour of steel beams with web openings under combined axial compression, bending moment and shear force at ambient temperature. The results show that buckling of the compressive tee-sections at the openings can reduce the plastic moment capacity of the openings; and an analytical method has been proposed to incorporate the influences of axial compression and tee-section buckling into the existing shear-moment design equations. The elevated temperature simulations show that axially restrained steel beams with web openings may enter catenary action at much lower temperatures than the commonly accepted critical failure temperatures calculated assuming no axial restraint and no tee-section buckling. Therefore, at the commonly accepted critical failure temperatures, many perforated steel beams exert tensile forces on the adjacent connections. It is important that the connections have the strength and deformation (rotation) capacity to enable catenary action to develop. The parametric study examines, in detail, how changing the different design parameters may affect the elevated temperature behaviour of perforated beams. The examined parameters including load ratio, level of axial restraint, cross-section temperature distribution profile, opening shape, opening size and opening position. Based on the results of the numerical parametric study, an analytical method has been derived to obtain the complete axial force-temperature relationship for axially restrained perforated steel beams. The key points of the analytical method include initial stiffness, point of initial failure under combined axial compression, bending moment and shear force, transition temperature at which the axial force on the beam changes from compression to tension and the magnitude of the tensile force resulting from the beams going into catenary action. Using the analytical method, it is possible to assess the maximum tensile force in the beam and the corresponding temperature so that the safety of the connections can be checked.
APA, Harvard, Vancouver, ISO, and other styles
2

Yoo, Tae Min. "Strength and Behaviour of High Strength Concrete Deep Beam with Web Openings." Thesis, Griffith University, 2011. http://hdl.handle.net/10072/365524.

Full text
Abstract:
Over the last few decades, concrete deep beam research has attracted attentions of both academics and professionals due to the increasing use of this type of structural members in construction projects. Evaluating the ultimate strength of concrete deep beams has been a great challenge because of the complexity of these structural members. Moreover, using high strength material and having openings in the web increase the difficulties of predicting the ultimate strength. Normally, web openings are introduced to accommodate services such as air-conditioning ducts, cables, and other essential services. However, the existence of web openings causes geometric discontinuity within the beam and non-linear stress distributions over the depth of the beam. Furthermore, present Codes of Practices do not cover the design of deep beams with web openings. The focus of this thesis is to develop a set of simple and reliable design equations for high strength concrete deep beams with web openings. Deep beams without web reinforcement but with web openings are given particular attention in this investigation, which constitutes three major components: experimental, numerical and theoretical studies.<br>Thesis (PhD Doctorate)<br>Doctor of Philosophy (PhD)<br>Griffith School of Engineering<br>Science, Environment, Engineering and Technology<br>Full Text
APA, Harvard, Vancouver, ISO, and other styles
3

Shaker, I. M. "The strength and behaviour of fibre reinforced concrete deep beams with and without web openings." Thesis, Cardiff University, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.377128.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Horák, Marek. "Pevnostní analýza nosníku s tenkou stojinou - vliv otvorů a tahového pole." Doctoral thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-234239.

Full text
Abstract:
In design of an aircraft structure, the great emphasis is placed on achieving high weight efficiency. This thesis is focused on the stress analysis of the spars with thin web with or without web openings, which is one of the most important parts of the airplane structures. In comparison with traditional spars or beams, which are widely used in civil engineering applications, the design of the beam with thin web is more complicated. Thesis contains useful information for analytical calculation of this type of spars and its verification using finite element method and experimental measurement.
APA, Harvard, Vancouver, ISO, and other styles
5

Cho, Soon Ho. "Slab behaviour in composite beams at web openings." Thesis, McGill University, 1990. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=74647.

Full text
Abstract:
An explanation is provided for the slab behaviour in composite beams at web holes where the concrete slab carries heavy vertical shear. This is based on the truss concept, and requires consideration of shear studs in the hole region as vertical tension members. According to this, a structural action between the concrete slab and shear connectors for carrying or transferring vertical shear to the steel beam was clearly identified.<br>On the basis of the slab behaviour identified, truss idealizations capable of determining the slab shear carrying capacity in a rational manner were developed. Then, the ultimate strength for composite beams at web holes was formulated including the truss idealizations. Another ultimate strength analysis accounting for the slab shear carrying capacity in a simple manner, which was also developed during this research project, is given. This provided the fundamental solution procedure for the plastic analysis used.<br>A series of nine tests was carried out with particular attention being directed to the verification of the proposed truss analogy. The major test parameters included the configurations of the studs in the hole region, the width of the concrete slab and stud detailing near the high moment end of the hole. The ultimate strength predictions were made by the two methods developed, and compared with previous and present test results.
APA, Harvard, Vancouver, ISO, and other styles
6

Al, Taee Mohammed. "CFRP strengthening of steel beams with web openings." Thesis, University of Manchester, 2018. https://www.research.manchester.ac.uk/portal/en/theses/cfrp-strengthening-of-steel-beams-with-web-openings(050d4a61-1d9a-49da-87de-a0785757c126).html.

Full text
Abstract:
During the service life of a building structure, the introduction of web openings into existing steel floor beams is often required to allow for new services such as air conditioning, sprinkler systems, telecommunications etc. However, the presence of large openings in the webs can significantly reduce the shear and bending strength capacity of the beams. Traditionally, the welding of additional steel plates around the opening areas is adopted as a means of strengthening and stiffening. This not only presents practical difficulties but can induce residual stresses which weaken fatigue performance of the section. The aim of this study is to explore the applicability of externally bonded carbon fibre reinforced polymer composites (CFRP) as an alternative means of strengthening for web openings in steel flexural elements. A numerical and experimental investigation was employed in the research reported in this thesis to achieve this aim. Using a non-linear finite element approach, the effects of strengthening arrangements and CFRP lengths were investigated with a view to determine the most structurally efficient layout of CFRP strengthening. The experimental tests were conducted later on four specimens, one control specimen (without opening and un-strengthened) and the rest with different web opening positions and CFRP strengthening. In order to further understand the limits of applicability of this approach, further numerical modeling was also performed to assess the proposed strengthening method when applied to full-scale steel beams with web openings at mid-span or in the high shear zone. The series of beams examined comprised the types of spans which are common in commercial frame buildings. The outcomes of this research show that the CFRP strengthening method is capable of recovering and in some cases exceeding the strength of the beam to that before the introduction of web openings. Similarly, the strengthening method increases the stiffness of the altered beam, thus bringing deflections back to a level similar to the beam before introduction of openings. In many of the strengthened cases, a reduction in ductility was observed; this can in part be due to over-specification of strengthening thickness and thus demonstrates the importance of choosing the optimum strengthening arrangement. In parallel with the reduction in ductility, it was observed that changes in failure mode and position can occur with certain strengthening arrangements in comparison to the unaltered beam. In the application of the method to full scale beams, the results of the simulations suggest that the technique of CFRP strengthening can be used effectively as a realistic and practical alternative solution to retrofitting of existing steelwork. When the CFRP strengthened beams were compared to those with traditional welded steel plate strengthening designed according to SCI P355 (2011), the results were found to be similar in terms of load capacity and overall failure mode.
APA, Harvard, Vancouver, ISO, and other styles
7

Assenso, Antwi Akwasi Manu. "Behavior of wide flange beams with web openings." OpenSIUC, 2012. https://opensiuc.lib.siu.edu/theses/978.

Full text
Abstract:
Behavior of wide flanged beams is of much importance to civil engineers as this one of the main materials used in steel structures. Openings are made in the web of beams to pass services pipes from one side of the building to another, when these openings are made in the beams, the shear and moment capacity at this section will be reduced. This will increase stresses at this section of the beam and will subsequently affect the stress distribution in the beam with web opening. Longitudinal stiffeners are placed at the top and bottom edges of the web opening to increase both moment and shear capacity at the section with web opening. Four samples were used in this study; a solid wide flange beam, a wide flange beam with web opening and two beams with reinforced web openings. The von Mises stress and the first principal stresses were obtained from the nonlinear static analysis. The results from a nonlinear finite element analysis of the four simply supported beams are discussed. The AISC steel design guide series 2 provide equations for the design of reinforced web opening. The reinforced web opening beam using the AISC guidelines is evaluated by comparing it to the finite element analysis.
APA, Harvard, Vancouver, ISO, and other styles
8

Baharom, Shahrizan. "Composite beams with openings in metal-ribbed decking slabs." Thesis, Swansea University, 2010. https://cronfa.swan.ac.uk/Record/cronfa42871.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

WISSMANN, JORGE AUGUSTO. "STUDY OF STEEL BEAMS WITH WEB OPENINGS INCLUDING CELLULAR, LITZKA AND DEPTH-EXPANDED BEAMS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2009. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=31879@1.

Full text
Abstract:
PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO<br>PROGRAMA DE EXCELENCIA ACADEMICA<br>Estruturas cada vez mais esbeltas têm sido usadas para otimizar edifícios de grande porte e reduzir custos, inclui-se nisto o pé-direito das edificações e portanto a altura das vigas. Grandes vãos são cada vez mais comuns, principalmente quando se utiliza aço em edificações, gerando então amplos espaços de serviço em uma direção, mas obstáculos na outra pela continuidade das vigas. A utilização de aberturas na alma das vigas para passagem de tubulações de ar-condicionado, incêndio, etc., evita um acréscimo na altura. Em consequência há uma grande diminuição da capacidade resistente nestes elementos estruturais que dependem diretamente da forma, do tamanho e da posição destas aberturas. A presente dissertação descreve alguns métodos construtivos de aberturas em almas de vigas de aço, cálculos de dimensionamentos e normas relacionadas. Alguns estudos numéricos com aplicações do método dos elementos finitos foram realizados investigando: angulação de aberturas hexagonais, vigas com três aberturas nos terços médios, vigas casteladas (tipo Litzka, com quantidades diferentes de aberturas), vigas expandidas em altura e uma viga Litzka Expandida. Para tal, utilizou-se de seis perfis de uso prático e comparando-os entre estas alternativas descritas. A viga Litzka Expandida se destacou em resistência quando comparada com outros métodos de fabricação, como também pelo menor peso linear, praticidade na fabricação e posicionamento das aberturas.<br>More slender structures are used in order to reduce costs, floors depht and floor to ceiling clear heights. Steel construction and composite construction for buildings often employs long spans for beams and girders, offering service room between beams in one direction only. The use of web openings for passage of service ducts avoids increasing the depth of construction. Beams with web openings have reductions on flexural and shear resistances depending on the geometry, size and position of such openings on the beam. This dissertation presents some construction methods of beam web openings, analysis and design recommendations, related standards and codes. Some numerical studies by the finite elements method were carried out and results are presented for: type of openings, number and spacing of openings, castelled beams (Litzka type and nonuniform distribution of openings) and expanded in depth beams. For this purpose, six commonly used profiles were used for testing the described web openings solutions. Some comparison results are presented. The Litzka type of web expanded beam presented the best performance in terms of strength, easy of fabrication and reduction of material costs.
APA, Harvard, Vancouver, ISO, and other styles
10

Nordblad, Erik. "Opening New Radio Windows and Bending Twisted Beams." Doctoral thesis, Uppsala universitet, Institutet för rymdfysik, Uppsalaavdelningen, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-158797.

Full text
Abstract:
In ground based high frequency (HF) radio pumping experiments, absorption of ordinary (O) mode pump waves energises the ionospheric plasma, producing optical emissions and other effects. Pump-induced or natural kilometre-scale field-aligned density depletions are believed to play a role in self-focussing phenomena such as the magnetic zenith (MZ) effect, i.e., the increased plasma response observed in the direction of Earth's magnetic field. Using ray tracing, we study the propagation of ordinary (O) mode HF radio waves in an ionosphere modified by density depletions, with special attention to transmission through the radio window (RW), where O mode waves convert into the extraordinary (X, or Z) mode. The depletions are shown to shift the position of the RW, or to introduce RWs at new locations. In a simplified model neglecting absorption, we estimate the wave electric field strength perpendicular to the magnetic field at altitudes normally inaccessible. This field could excite upper hybrid waves on small scale density perturbations. We also show how transmission and focussing combine to give stronger fields in some directions, notably at angles close to the MZ, with possible implications for the MZ effect. In a separate study, we consider electromagnetic (e-m) beams with helical wavefronts (i.e., twisted beams), which are associated with orbital angular momentum (OAM). By applying geometrical optics to each plane wave component of a twisted nonparaxial e-m Bessel beam, we calculate analytically the shift of the beam's centre of gravity during propagation perpendicularly and obliquely to a weak refractive index gradient in an isotropic medium. In addition to the so-called Hall shifts expected from paraxial theory, the nonparaxial treatment reveals new shifts in both the transverse and lateral directions. In some situations, the new shifts should be significant also for nearly paraxial beams.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Books on the topic "Beam with Openings"

1

Darwin, David. Steel and composite beams with web openings: Design of steel and composite beams with web openings. American Institute of Steel Construction, 1990.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

Kiang-Hwee, Tan, ed. Concrete beams with openings: Analysis and design. CRC Press, 1999.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

Institute, Structural Engineering, and American Society of Civil Engineers., eds. Specification for structural steel beams with web openings. American Society of Civil Engineers, 1999.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

Lawson, R. M. Design for openings in the webs of composite beams. Construction Industry Research & Information Association, 1987.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
5

A, Saleh Mohsen, United States. Army. Office of the Chief of Engineers., Construction Productivity Advancement Research Program (U.S.), and Construction Engineering Research Laboratories (U.S.), eds. Design and performance testing of prestressed precast reinforced concrete double-tee beams with web openings. US Army Corps of Engineers, Construction Engineering Research Laboratories, 1997.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
6

Watson, John. Survive & Beat Annoying Chess Openings. Cardoza, 2003.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
7

Jones, Gawain. How to Beat the Sicilian Defence: An Anti-Sicilian Repertoire For White. Everyman Chess, 2011.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
8

Specifications for Structural Steel Beams with Web Openings. American Society of Civil Engineers, 1999. http://dx.doi.org/10.1061/9780784403006.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Police, Melanie. How Self-Love Woke the Mama Bear: Opening a Gift after Nineteen Years. Lulu Press, Inc., 2015.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
10

Police, Melanie J. How Self-Love Woke the Mama Bear: Opening a Gift after Nineteen Years. Lulu Press, Inc., 2015.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Book chapters on the topic "Beam with Openings"

1

Murugan, R., and G. Prasanna. "GFRP Reinforced RC Deep Beam with Multiple Web Openings." In Lecture Notes in Civil Engineering. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-5644-9_34.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Guligari, Venumadhav, C. Arunkumar, and N. Umamaheswari. "Investigation on Plastic Hinge in Non-prismatic Beam with Circular Openings." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-6233-4_14.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Shasikumar, N. Jayaramappa, and C. V. Sai Nagendra. "Experimental and Numerical Study on Flexural Behaviour of Deep Beam with Circular Openings Under Static Loading." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-99-9502-8_28.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Manasa, K. V., N. Jayaramappa, and C. V. Sai Nagendra. "Experimental and Numerical Study on Flexural Behaviour of Deep Beam with Rectangular Openings Under Static Loading." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-99-9502-8_29.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Cheng, Hock Tian, Bashar S. Mohammed, and Kamal Nasharuddin Mustapha. "Deflection Analysis of Pretensioned Inverted T-Beam with Circular Web Openings Strengthened with GFRP by Response Surface Method." In Computational Structural Engineering. Springer Netherlands, 2009. http://dx.doi.org/10.1007/978-90-481-2822-8_126.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Blaauwendraad, Johan. "Deep Beam with Opening." In Stringer-Panel Models in Structural Concrete. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-76678-2_7.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

El-Metwally, Salah El-Din E., and Wai-Fah Chen. "Openings in Shallow and Deep Beams." In Structural Concrete. CRC Press, 2017. http://dx.doi.org/10.4324/9781315155500-6.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

El-Metwally, Salah El-Din E., and Wai-Fah Chen. "Openings in Shallow and Deep Beams." In Structural Concrete. CRC Press, 2017. http://dx.doi.org/10.1201/9781315155500-7.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Silva, Francisco, João Marques, José Meireles, and Nuno Peixinho. "Vierendeel Bending of Beams with Web Openings – Automatic Calculation." In Innovation, Engineering and Entrepreneurship. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-91334-6_68.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Osmani, Amine, Abdelwahhab Khatir, and Djamel Eddine Kerdal. "Influence of the Geometric Characteristics of the Openings on the Mechanical Behavior of Steel Beams with Web Openings." In Lecture Notes in Civil Engineering. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-57224-1_16.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Beam with Openings"

1

Rajić, Andrea, Ivan Lukačević, Ivan Curkovic, and Vlaho Žuvelek. "Numerical parametric study of LWT-FLOOR system: effect of various web openings." In IABSE Congress, San José 2024: Beyond Structural Engineering in a Changing World. International Association for Bridge and Structural Engineering (IABSE), 2024. https://doi.org/10.2749/sanjose.2024.0890.

Full text
Abstract:
&lt;p&gt;Except for the main advantage of the composite system, which is the high utilisation of applied materials, these structural systems are also known for reusability, high degree of prefabrication and long-span capability. This paper presents experimentally supported numerical research on the bending behaviour of LWT-FLOOR composite cold-formed steel-concrete beams where steel beam elements are connected using spot-welding technology and are connected to a concrete slab by innovative demountable shear connectors. To consider the functional requirements of the system, a parametric study of LWT-FLOOR beams with different shapes of web openings is presented. Furthermore, the influence of different web openings is verified for various corrugated web thicknesses. Except for various shapes of web openings, spans of steel-concrete composite beams of 6 and 12 m are considered. For all analysed parameters, the bending capacities are compared.&lt;/p&gt;
APA, Harvard, Vancouver, ISO, and other styles
2

Surianinov, Mykola, Inna Aksyonova, Alla Perperi, and Zlata Holovata. "Deformability and Crack Resistance of Reinforced Concrete and Fiber-Reinforced Concrete Cross-Beam Systems." In International Scientific Applied Conference "Problems of Emergency Situations". Trans Tech Publications Ltd, 2024. http://dx.doi.org/10.4028/p-mczi8g.

Full text
Abstract:
The paper presents the results of experimental studies and computer modeling of reinforced concrete and fiber-reinforced concrete cross-beam systems. The authors have made a special stand, the design of which allows for experimental studies of the load-bearing capacity, deformability and crack resistance of cross-beam systems under concentrated and distributed static loads. Samples of reinforced concrete and steel fiber concrete were tested, which are systems consisting of four mutually perpendicular beams of rectangular cross-section. The samples are reinforced in the lower zone with longitudinal reinforcement of class A400C with a diameter of 8 mm. Steel fiber concrete samples have additional dispersed reinforcement with steel fiber with curved ends in an amount of 1% by volume of concrete. A methodology for finite element modeling and calculation of cross-beam systems in ANSYS 17.1 has been developed, and the results obtained experimentally and based on computer modeling have been compared. Tests have shown that dispersed reinforcement leads to an increase in the load-bearing capacity of the system by 1.23 times. In finite element analysis, this increase was 1.18 times. The load-bearing capacity of the reinforced concrete cross-beam system obtained by the finite element method is 13% less than in the experiment, and that of the fiber-reinforced concrete system is 15% less. The number of cracks in a fiber-reinforced concrete system increases significantly (2 times), but the length of the cracks decreases by 2.1 times, and the width of their opening is significantly reduced - from 3 mm to 0,5 mm.
APA, Harvard, Vancouver, ISO, and other styles
3

Gómez, Santiago, Daniel Spegel-Lexne, Joakim Argillander, et al. "Orbital Angular Momentum Wave-Particle Duality in a Few-Mode Optical Fiber Platform." In CLEO: Applications and Technology. Optica Publishing Group, 2024. http://dx.doi.org/10.1364/cleo_at.2024.jw2a.134.

Full text
Abstract:
We demonstrate wave-particle duality of orbital angular momentum (OAM) photonic quantum states in a few-mode optical fiber interferometer with a dynamic tunable beam-splitter, opening new possibilities for fundamental and practical applications using OAM photonic states.
APA, Harvard, Vancouver, ISO, and other styles
4

Zhang, Yiwen, Si-Ao Li, Xiaoyan Wang, et al. "Wedge Angle and Direction Detection of Multi-opening Object Using Deep Learning." In Imaging Systems and Applications. Optica Publishing Group, 2022. http://dx.doi.org/10.1364/isa.2022.itu5e.2.

Full text
Abstract:
CNN is used to identify the number of openings, wedge angle and direction of multi-opening object with probing Gaussian beam. 97.37% accuracy is achieved for different classifications with 1° precision and up to 36 openings.
APA, Harvard, Vancouver, ISO, and other styles
5

Galustanian, Narek, Alaa El-Din El-Sisi, Nader Panahshahi, and Sarah Orton. "Strengthening of Drilled Beam Column Connection with Openings." In Structures Congress 2025. American Society of Civil Engineers, 2025. https://doi.org/10.1061/9780784486085.023.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Kachouh, Nancy, Tamer El-Maaddawy, Hilal El-Hassan, and Bilal El-Ariss. "PERFORMANCE PREDICTION OF STEEL FIBER-REINFORCED RECYCLED AGGREGATES CONCRETE DEEP BEAMS WITH WEB OPENINGS." In Sixth International Conference on Sustainable Construction Materials and Technologies. Coventry University, 2024. http://dx.doi.org/10.18552/2024/scmt/102.

Full text
Abstract:
This paper aims to predict the shear strength of reinforced concrete (RC) deep beams containing web openings made with recycled concrete aggregates (RCAs) and steel fibers. Four numerical deep beam models were developed and verified against published experimental data. Three beam models had a 100% RCA replacement ratio, whereas one beam model was made with natural aggregates (NAs). One of the RCA-based beam models included steel fibers, one beam had internal steel stirrups, and the third beam was kept without steel fibers nor steel stirrups. The simulation models adopted a tensile softening law established through an inverse analysis of flexural test data of concrete prisms. The accuracy of published analytical formulas was also examined. The ratio of the shear strength predicted numerically to that measured experimentally was 0.89 to 1. Existing analytical formulas examined in this study overestimated the shar capacity of the tested deep beams by up to 49%.
APA, Harvard, Vancouver, ISO, and other styles
7

Aggelopoulos, Eleftherios, Francois Hanus, and Mark Lawson. "Shear connection requirements for composite cellular beams." In 12th international conference on ‘Advances in Steel-Concrete Composite Structures’ - ASCCS 2018. Universitat Politècnica València, 2018. http://dx.doi.org/10.4995/asccs2018.2018.7161.

Full text
Abstract:
Beams with regular circular web openings (cellular beams) are often used in composite construction. Rules for the minimum degree of shear connection in composite beams are presented in Eurocode 4 but were derived for solid web beams in propped construction. This paper investigates the degree of shear connection requirements for composite cellular beams, focusing on the combined effect of using a steel section with regularly spaced, large circular web openings and unpropped construction conditions. The effect of the diameter and the spacing of the openings is also investigated. In order to provide rules for the minimum degree of shear connection in cellular beams, parametric finite element (FE) analyses were carried out for beams in the span range of 9 to 18 m. The results were calibrated against a 15.3 m span composite cellular beam test with a low degree of shear connection. The proposed minimum degree of shear connection requirements for beams with regular circular web openings are presented for both propped and unpropped construction, and for symmetric and asymmetric steel sections. Comparisons are made with equivalent beams with solid webs (no openings) and it is shown that significant relaxation in the codified minimum degree of shear connection to the current version of Eurocode 4 can be justified for composite cellular beams.
APA, Harvard, Vancouver, ISO, and other styles
8

Mastan, Sheik, S. Anandh, and S. Sindhu Nachiar. "A scientometric analysis on composite steel-concrete beam with openings: A review." In ADVANCEMENTS IN MATERIALS FOR CIVIL ENGINEERING APPLICATIONS. AIP Publishing, 2024. http://dx.doi.org/10.1063/5.0239760.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Mai, Jiaer, Xiaozhi Lu, Guanhong He, and Xingkai Pei. "Experimental study on seismic performance of the beam with openings of subway station." In 2021 7th International Conference on Hydraulic and Civil Engineering & Smart Water Conservancy and Intelligent Disaster Reduction Forum (ICHCE & SWIDR). IEEE, 2021. http://dx.doi.org/10.1109/ichceswidr54323.2021.9656334.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Hasan, Murtada Naji, and Hayder Hussein Kamonna. "Behavior of reinforced concrete deep beam with openings strengthened by NSM steel bars." In THE 5TH INTERNATIONAL CONFERENCE ON CIVIL AND ENVIRONMENTAL ENGINEERING TECHNOLOGIES. AIP Publishing, 2024. http://dx.doi.org/10.1063/5.0237146.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Beam with Openings"

1

Solanki, Pranshoo, and Haiyan Xie. Field-Curing Methods for Evaluating the Strength of Concrete Test Specimens. Illinois Center for Transportation, 2023. http://dx.doi.org/10.36501/0197-9191/23-023.

Full text
Abstract:
The American Association of State Highway and Transportation Officials R 100 standard provides instructions for making and curing concrete test specimens in the field. However, further research is needed to compare the strength of the field-cured specimen with the strength of the actual in-place concrete item. The purpose of this combined laboratory and field study was to evaluate field-curing methods of concrete specimens for estimating the early opening strength of an in-place concrete item. The researchers used one Illinois Department of Transportation class PV mix to cast cylinders, beams, and in-place concrete slabs on October 2021 and February 2022 at an Illinois State University concrete experiment site. Concrete cylinders were cured using three methods: ambient air (Method #C1), insulated box/cooler (Method #C2), and power-operated box (Method #C3). Beams were cured using two methods: ambient air (Method #B1) and insulated plywood box (Method #B2). The cast-in-place specimens from each slab and cylinder were tested for compressive strength, and beams were tested for flexural strength after 1, 3, and 7 days of curing. One cylinder and one beam in each curing method along with slabs were embedded with sensors to collect temperature variation with time. Only Methods #C1, #C2, and #B1 were selected for evaluating further in the field, and data were collected from an IDOT District 5 box culvert demonstration project. Laboratory results showed that Method #C2 curing of 150 mm (6 in.) cylinders estimated early (1 to 3 days) compressive strength of an in-place concrete item within an acceptable range. For estimating the 7-day strength of an in-place concrete item, Method #C1 produced acceptable results. Further statistical analysis supported the results observed in the laboratory and field.
APA, Harvard, Vancouver, ISO, and other styles
2

Gerdin, G. Restrike Particle Beam Experiments on a Dense Plasma Focus. Opening Switch Research on a Dense Plasma Focus. Defense Technical Information Center, 1985. http://dx.doi.org/10.21236/ada152991.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Frese, M. H. Dynamics of plasma injection along magnetic field lines in the PBFA II (Particle Beam Fusion Accelerator II) plasma opening switch. Office of Scientific and Technical Information (OSTI), 1989. http://dx.doi.org/10.2172/7161941.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Renk, T. An analysis of data from a test of PBFA-2 (Particle Beam Fusion Accelerator-2) plasma opening switch geometries on Blackjack 5. Office of Scientific and Technical Information (OSTI), 1990. http://dx.doi.org/10.2172/6732651.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

ENHANCEMENT OF ANTI-COLLAPSE CAPACITY OF STEEL FRAME WITH OPENINGS IN BEAM WEB (ICASS’2020). The Hong Kong Institute of Steel Construction, 2022. http://dx.doi.org/10.18057/icass2020.p.139.

Full text
Abstract:
To overcome the shortcomings of the traditional fully welded connection and the connection with openings in the beam web against earthquakes and progressive collapse, a new type of reinforced connection with openings in the beam web (RBWO connection) is proposed. This connection is characterised by M-shaped structural plates arranged inside the upper and lower flanges of the beam end based on the connection with the openings in the beam web. The addition of the M-shaped structural plate is beneficial to the improvement in the initial stiffness, yield load, and ultimate bearing capacity of the structure under cyclic loading. The specimen can realize the secondary resistance stage, and the anti-progressive collapse performance of the structure is significantly improved.
APA, Harvard, Vancouver, ISO, and other styles
6

INVESTIGATION OF BEHAVIOR OF INTERIOR STEEL CONNECTIONS WITH OPENINGS IN BEAM WEB AND FLANGE UNDER MONOTONIC LOADING. The Hong Kong Institute of Steel Construction, 2021. http://dx.doi.org/10.18057/ijasc.2021.17.4.2.

Full text
Abstract:
Connections are considered to be one of the most prominent components of steel moment frames and have received studious attention in recent years. The core problem of welded connections is premature brittle fracture of weld in the critical beam-to-column connection region. Within the framework of this issue, various approaches have been proposed to solve the mentioned problem. Intentional weakening of the beam web or flange is in line with the purpose of leading the plastic hinge away from the column face, hence, increasing the ductility. The aim of this research is to investigate the behavior of interior connections subjected to monotonic lateral loading in case of presence of openings in beam web or flange. To do so, an ordinary fully welded rigid connection, reduced beam section, reduced web section, and drilled flange connection models are simulated numerically, utilizing finite element software, ANSYS. The results indicate that scrupulous selection of opening sizes are of great importance to fulfill the desired outcome which is avoiding the brittle failure of connections. Furthermore, the use of drilled flange, reduced beam section, or reduced web section connections satisfy the expected performance and it is proposed to use them according to practicability, architectural and economic considerations as well as site conditions. Shear deformation and local buckling is observed in reduced web section connections while in drilled flange connections, stress concentration around the opening is critical.
APA, Harvard, Vancouver, ISO, and other styles
7

BEHAVIOR OF WEB PERFORATED COLD-FORMED STEEL BEAMS UNDER COMBINED BENDING AND SHEAR ACTION. The Hong Kong Institute of Steel Construction, 2022. http://dx.doi.org/10.18057/icass2020.p.340.

Full text
Abstract:
In practical application, cold-formed steel members often have a certain number and forms of holes in the web. The web opening will influence the bearing capacity of steel beam under the combined action of bending moment and shear force. In this paper, 20 groups of cold-formed C-section steel beams with web openings within shear span were tested under mid-span single point loading mode, and the finite element analysis software ABAQUS was used to conduct extensive parameter analysis on high shear-span ratio (1.5 ~ 4.0) cold-formed thin-walled lipped C-section steel beams with different hole depth-to-web height ratios and web height-to-thickness ratios to identify their influences on the bearing capacity and failure modes of the beams. Based on the results of test and finite element analysis, the mechanical behavior and failure rules of web perforated cold-formed thin-walled C-section steel beams under combined action of bending moment and shear force were deeply studied.
APA, Harvard, Vancouver, ISO, and other styles
8

BEHAVIOR OF WEB PERFORATED COLD-FORMED STEEL BEAMS UNDER COMBINED BENDING AND SHEAR ACTION. The Hong Kong Institute of Steel Construction, 2023. http://dx.doi.org/10.18057/ijasc.2023.19.1.8.

Full text
Abstract:
To cater engineering application needs, cold-formed steel (CFS) members often have some web openings which could influence bearing capacity of the steel beam under combined bending and shear action. This paper presents tests on 20 groups of thin-walled web-perforated lipped C-shaped CFS beams, which were conducted under single point loading mode at mid-span. Besides, detailed finite element parameter analysis on the high shear-span ratio (a/h= 1.5 ~ 4.0) specimens was conducted by ABAQUS after the model was verified, which was mainly focused on the influences of different hole depth-to-web height ratios (dh/h) and web height-to-thickness ratios (h/t) on the bearing capacity and failure modes of the beams. Based on the results of test and FEA, the mechanical behavior and failure rules of thin-walled web perforated lipped C-shaped CFS beams under combined bending and shear action were deeply studied.
APA, Harvard, Vancouver, ISO, and other styles
9

SEISMIC PERFORMANCE AND REPLACEABILITY OF STEEL FRAME STRUCTURES WITH REPLACEABLE BEAM SEGMENTS. The Hong Kong Institute of Steel Construction, 2024. http://dx.doi.org/10.18057/ijasc.2024.20.1.8.

Full text
Abstract:
This study assessed the seismic performance and replaceability of steel frame structures incorporating replaceable beam segments. A reduced-beam-section beam-column joint featuring a replaceable energy dissipation beam segment was specifically designed for this purpose. The joint underwent quasi-static analysis subjected to low-cycle reciprocating loading. The study extended to a single-story, single-span plane steel frame, where reduced-beam-section beam-column joints with replaceable energy dissipation beam segments were analyzed for hysteretic and deformation behavior. Moreover, the exploration of parameters such as end-plate opening clearance and rotation deformation was undertaken to inform the simplification of the overall plane frame model. Meanwhile, multi-scale models were developed for an eight-story, four-span, reduced-beam-section steel frame (RBSSF) with a replaceable energy dissipation beam segment and a rigid steel frame (RSF). These models were employed to analyze the elastoplastic time-history characteristics and the replaceability of the beam segment. The results demonstrated that the reduced-beam-section beam-column joint with a replaceable energy dissipation beam segment exhibited a relatively full hysteresis curve, affirming high ductility, energy dissipation, and plastic deformation capacities. Notably, damage and plastic development in the steel beam primarily concentrated in the low-yield-point replaceable energy dissipation beam segment. The small end-plate opening clearance ensured cooperative deformation between the end plates facilitated by the bolts. Comparatively, the RBSSF structure displayed superior seismic performance to the RSF structure during earthquakes, with the replaceable energy dissipation beam segment satisfying replaceability requirements under moderate seismic conditions.
APA, Harvard, Vancouver, ISO, and other styles
10

INFLUENCE OF DIFFERENT SHAPES OF GEOMETRIC IMPERFECTIONS ON THE STRUCTURAL BEHAVIOR OF BEAMS WITH LARGE WEB OPENINGS. The Hong Kong Institute of Steel Construction, 2020. http://dx.doi.org/10.18057/ijasc.2020.16.3.8.

Full text
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Beam with Openings' for particular source types:
Journal articles Dissertations / Theses Books
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography