Bibliografías temáticas / Shear Behaviour of SCFRC Beams

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Literatura académica sobre el tema "Shear Behaviour of SCFRC Beams"

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Publicado: 4 de junio de 2021
Última modificación: 2 de febrero de 2022

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Artículos de revistas sobre el tema "Shear Behaviour of SCFRC Beams"

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Fodzi, Nurulain Hanida Mohamad y M. H. Mohd Hisbany. "Structural Effect of Using Steel Fiber Reinforcement on the Punching Shear of Self-Compacting Fiber Reinforced Concrete (SCFRC) Ribbed Slabs". Materials Science Forum 972 (octubre de 2019): 99–104. http://dx.doi.org/10.4028/www.scientific.net/msf.972.99.

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—Ribbed slab is an ideal structure for architects and contractors. It has an attractive soffit appearance and also giving economical value when it is come in weight and material saving. Placing and finishing of concrete slab normally influence about 30% - 35% of overall cost of flooring system. Ribbed slab or also known as one-way joist slab system consist of regularly spaced concrete joist or ribs spanning in one direction, a reinforced concrete slab cast integrally with the ribs and beam span between the columns, perpendicular to the ribs. However the complexity of the structure itself has become an issue due to honeycomb and poor workmanship. To overcome this problem, the use of Self-Compacting Steel Fiber Reinforcement Concrete (SCFRC) could improve the workmanship quality and to minimize the occurrence of honeycomb in concrete. Steel fiber in concrete improved the resistance of reinforced structural members cracking, deflection and other serviceability condition. Thus, this alternative approach will be the main focus in this study.Punching shear strength in reinforced concrete slabs subjected to concentrated loads has received a lot of emphasis due to its importance in the structural system, this failure may take place due to in conservative design of slab overloading and deterioration of strength in concrete and reinforcement. The continuous improvement of the technology of SCFRC and the better knowledge on the mechanical behavior of this SCFRC ribbed slab are contributing to a larger field application of SCFRC. Determination of punching shear strength has received considerable attention by the engineering profession in recent years.
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Zagon, Raul y Kiss Zoltan. "Shear Behaviour of UHPC Concrete Beams". Procedia Technology 22 (2016): 122–26. http://dx.doi.org/10.1016/j.protcy.2016.01.019.

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Adom-Asamoah, Mark y Russell Owusu Afrifa. "Shear behaviour of reinforced phyllite concrete beams". Materials & Design 43 (enero de 2013): 438–46. http://dx.doi.org/10.1016/j.matdes.2012.07.033.

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Furlan, Sydney y João Bento de Hanai. "Shear behaviour of fiber reinforced concrete beams". Cement and Concrete Composites 19, n.º 4 (enero de 1997): 359–66. http://dx.doi.org/10.1016/s0958-9465(97)00031-0.

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Souza, Regina Helena F. y Julio Appleton. "Behaviour of shear-strengthened reinforced concrete beams". Materials and Structures 30, n.º 2 (marzo de 1997): 81–86. http://dx.doi.org/10.1007/bf02486308.

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Al-Quraishi, Hussein, Aseel Abdulazeez y Raad Abdulkhudhur. "Behaviour of Rubberized Concrete Beams in Shear". IOP Conference Series: Materials Science and Engineering 1067, n.º 1 (1 de febrero de 2021): 012004. http://dx.doi.org/10.1088/1757-899x/1067/1/012004.

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Xing, Qiong, Jiehong Liao, Zhi Chen y Wei Huang. "Shear behaviour of fire-damaged reinforced-concrete beams". Magazine of Concrete Research 72, n.º 7 (abril de 2020): 357–64. http://dx.doi.org/10.1680/jmacr.17.00529.

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Meda, A. "Shear behaviour of steel fibre reinforced concrete beams". Materials and Structures 38, n.º 277 (21 de enero de 2005): 343–51. http://dx.doi.org/10.1617/14112.

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Visintin, P., M. S. Mohamed Ali, M. Albitar y W. Lucas. "Shear behaviour of geopolymer concrete beams without stirrups". Construction and Building Materials 148 (septiembre de 2017): 10–21. http://dx.doi.org/10.1016/j.conbuildmat.2017.05.010.

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Ferdous, Wahid, Allan Manalo, Thiru Aravinthan y Amir Fam. "Flexural and shear behaviour of layered sandwich beams". Construction and Building Materials 173 (junio de 2018): 429–42. http://dx.doi.org/10.1016/j.conbuildmat.2018.04.068.

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Tesis sobre el tema "Shear Behaviour of SCFRC Beams"

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Cohen, Michael I. "Structural Behaviour of Self Consolidating Steel Fiber Reinforced Concrete Beams". Thèse, Université d'Ottawa / University of Ottawa, 2012. http://hdl.handle.net/10393/23101.

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When subjected to a combination of moment and shear force, a reinforced concrete (RC) beam with either little or no transverse reinforcement can fail in shear before reaching its full flexural strength. This type of failure is sudden in nature and usually disastrous because it does not give sufficient warning prior to collapse. To prevent this type of shear failure, reinforced concrete beams are traditionally reinforced with stirrups. However, the use of stirrups is not always cost effective since it increases labor costs, and can make casting concrete difficult in situations where closely-spaced stirrups are required. The use of steel fiber reinforced concrete (SFRC) could be considered as a potential alternative to the use of traditional shear reinforcement. Concrete is very weak and brittle in tension, SFRC transforms this behaviour and improves the diagonal tension capacity of concrete and thus can result in significant enhancements in shear capacity. However, one of the drawbacks associated with SFRC is that the addition of fibers to a regular concrete mix can cause problems in workability. The use of self-consolidating concrete (SCC) is an innovative solution to this problem and can result in improved workability when fibers are added to the mix. The thesis presents the experimental results from tests on twelve slender self-consolidating fiber reinforced concrete (SCFRC) beams tested under four-point loading. The results demonstrate the combined use of SCC and steel fibers can improve the shear resistance of reinforced concrete beams, enhance crack control and can promote flexural ductility. Despite extensive research, there is a lack of accurate and reliable design guidelines for the use of SFRC in beams. This study presents a rational model which can accurately predict the shear resistance of steel fiber reinforced concrete beams. The thesis also proposes a safe and reliable equation which can be used for the shear design of SFRC beams.
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Tian, Shichuan. "Shear behaviour of ferrocement deep beams". Thesis, University of Manchester, 2013. https://www.research.manchester.ac.uk/portal/en/theses/shear-behaviour-of-ferrocement-deep-beams(88ca7d6e-e285-4ec6-8741-da3f89047bde).html.

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This thesis presents the results of an experimental, numerical and analytical study to develop a design method to calculate shear resistance of flanged ferrocement beams with vertical mesh reinforcements in the web. Two groups of full-scale testing were conducted comprising of three I beams and four U beams. The I beams had the same geometry and reinforcement arrangements, but differed in the matrix strength or shear span to depth ratio. The U beams differed in web and flange thickness, reinforcement arrangements, matrix strength and shear span to depth ratio. The experimental data were used for validation of finite element models which had been developed using the ABAQUS software. The validated models were subsequently employed to conduct a comprehensive parametric study to investigate the effects of a number of design parameters, including the effect of matrix strength, shear span to depth ratio, cross sectional area, length of clear span, volume fraction of meshes and amount of rebar. The main conclusion from the experiments and parametric studies were: shear failure may occur only when the shear span to depth ratio is smaller than 1.5; the shear strength may increase by increasing the matrix strength, volume fraction of meshes, cross sectional area and amount of rebar. The main type of shear failure for I beams was diagonal splitting while for U beams it was shear flexural. Based on the results from the experimental and numerical studies, a shear design guide for ferrocement beams was developed. A set of empirical equations for the two different failure types and an improved strut-and-tie were proposed. By comparison with the procedures currently in practice, it is demonstrated that the methodology proposed in this thesis is likely to give much better predictions for shear capacity of flanged ferrocement beams.
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Ismail, Kamaran Sulaiman. "Shear behaviour of reinforced concrete deep beams". Thesis, University of Sheffield, 2016. http://etheses.whiterose.ac.uk/12600/.

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RC deep beams are key safety critical structural systems carrying heavy loads over short span, such as transfer girders in tall buildings and bridges. Current design provisions in codes of practice fail to predict accurately and reliably the shear capacity of RC deep beams and in some cases they are unsafe. This work aims to develop a better understanding of the behaviour of RC deep beams and governing parameters, and to improve existing design methods to more accurately predict the shear capacity of such members. An extensive experimental programme examining 24 RC deep beams is carried out. The investigated parameters include concrete strength, shear span to depth ratio, shear reinforcement and member depth. To develop a better insight on the distribution and magnitude of developed stresses in the shear span, finite element analysis is also performed. The microplane model M4 is implemented as a VUMAT code in ABAQUS to represent the behaviour of concrete in a more reliable manner and validated against experimental tests on RC deep beams. This model is utilised in a parametric study to further investigate the effect of concrete strength, shear span to depth ratio and shear reinforcement. The experimental and numerical results show that concrete strength and shear span to depth ratio are the two most important parameters in controlling the behaviour of RC deep beams, and that shear strength is size dependent. The analysis also shows that minimum amount of shear reinforcement can increase the shear capacity of RC deep beams by around 20% but more shear reinforcement does not provide significant additional capacity. A lateral tensile strain based effectiveness factor is proposed to estimate the strength of the inclined strut to be used in strut-and-tie model. Additionally, node factors to estimate the developed strength in different type of nodes are proposed. The proposed model is evaluated against a large experimental database and the results show that it yields more accurate and reliable results than any of the existing models. The model is characterized by the lowest standard deviations of 0.26 for both RC deep beams with and without shear reinforcement and accounts more accurately for all influencing parameters.
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Massam, Laurent. "The behaviour of GFRP-reinforced concrete beams in shear". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/mq62954.pdf.

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Al-Juboori, Wissam Sadeq. "The shear behaviour of concrete beams strengthened with CFRP". Thesis, University of Salford, 2011. http://usir.salford.ac.uk/26523/.

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A recent innovation for the shear strengthening of reinforced concrete (RC) beams is to externally bond Carbon Fibre Reinforced Polymer (CFRP) composite plates or strips. This technique has become popular because of the many advantages of CFRP composites such as: high strength-to-weight ratio, good corrosion resistance, and versatility in coping with different sectional shapes and corners. This study focuses on shear strengthening of structural members using CFRP. The understanding of concrete structures designed for strengthening in shear is still an area where uniform design rules do not exist or are treated very briefly. The research programme to study the shear contribution of externally bonded CFRP sheets/strips of RC beams includes laboratory tests of more than twenty-nine beam samples (of an original conceptual model incorporating a shear plane) with beams of different materials: nine aluminium beams, twenty concrete beams, and some timber beams for initial studies. There are twenty-six pure tensile laboratory tests to study bond behaviour between the parent material and CFRP. In addition, there are six pure shear specimens and tests to determine other material properties. The numerical analyses employ the finite element method and many numerical models are developed for simulation of the contribution of the CFRP for shear strengthening and bond strength. On completion of the experimental programme and FE analyses, the resulting information is used to formulate a new proposal for shear strengthening of concrete beams using CFRP. The bond strengths predicted using existing methods and new proposals from this study are compared with experimental data of this study and previous studies, demonstrating that the new proposals are valid and offer improvement over existing methods.
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趙作周 y Zuozhou Zhao. "Nonlinear behaviour of reinforced concrete coupling beams". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2001. http://hub.hku.hk/bib/B31243927.

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Zhao, Zuozhou. "Nonlinear behaviour of reinforced concrete coupling beams /". Hong Kong : University of Hong Kong, 2001. http://sunzi.lib.hku.hk/hkuto/record.jsp?B23589395.

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Khatab, Mahmoud A. T. "Behaviour of continuously supported self-compacting concrete deep beams". Thesis, University of Bradford, 2016. http://hdl.handle.net/10454/14628.

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The present research is conducted to investigate the structural behaviour of continuously supported deep beams made with SCC. A series of tests on eight reinforced two-span continuous deep beams made with SCC was performed. The main parameters investigated were the shear span-to-depth ratio, the amount and configuration of web reinforcement and the main longitudinal reinforcement ratio. All beams failed due to a major diagonal crack formed between the applied mid-span load and the intermediate support separating the beam into two blocks: the first one rotated around the end support leaving the rest of the beam fixed on the other two supports. The amount and configuration of web reinforcement had a major effect in controlling the shear capacity of SCC continuous deep beams. The shear provisions of the ACI 318M-11 reasonably predicted the load capacity of SCC continuous deep beams. The strut-and-tie model recommended by different design codes showed conservative results for all SCC continuous deep beams. The ACI Building Code (ACI 318M-11) predictions were more accurate than those of the EC2 and Canadian Code (CSA23.3-04). The proposed effectiveness factor equations for the strut-and-tie model showed accurate predictions compared to the experimental results. The different equations of the effectiveness factor used in upper-bound analysis can reasonably be applied to the prediction of the load capacity of continuously supported SCC deep beams although they were proposed for normal concrete (NC). The proposed three dimensional FE model accurately predicted the failure modes, the load capacity and the load-deflection response of the beams tested.
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Mahmoud, Karam Abdou Awad. "Shear behaviour of continuous concrete beams reinforced with GFRP bars". ASCE, 2015. http://hdl.handle.net/1993/30951.

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Continuous beams represent main structural elements in most reinforced concrete (RC) structures such as parking garages and overpass bridges. Deterioration of such structures due to corrosion of steel reinforcement is common in North America. To overcome the corrosion problems, the use of fiber-reinforced polymer (FRP) bars and stirrups becomes a viable alternative to steel reinforcement. However, to date, the shear behaviour of FRP-RC continuous beams has not been explored yet. As such, the objective of this study is to investigate the shear behaviour of such beams. In this study, twenty four full-scale continuous concrete beams were constructed and tested. The test beams had rectangular cross section with 200-mm width and a height of 300, 550 or 850 mm and were continuous over two equal spans. The main investigated parameters were concrete strength, type and ratio of longitudinal reinforcement, type and ratio of transverse reinforcement and beam effective depth. Moreover, a 3-D nonlinear finite element model (FEM) was constructed to simulate the behaviour of FRP-RC continuous beams. The model was verified against the experimental results and validated against test results from previous studies. Then, the verified/validated model was used to conduct a parametric study to investigate the effect of a wide range of the parameters on the shear behaviour of GFRP-RC beams. The experimental and FEM results showed that shear-critical GFRP-RC continuous beams exhibited moment redistribution. Also, it was observed that increasing the concrete strength and the longitudinal reinforcement ratio increased the shear strength significantly. Moreover, the presence of GFRP stirrups significantly enhanced the shear strength of the tested beams. Regarding the size effect, test results showed that there was adverse or no size effect on the shear strength of GFRP-RC continuous beams when they failed in the interior shear span while beams failed in the exterior shear span exhibited clear size effect. Furthermore, a comparison between the test results and the provisions of the available models and FRP standards and design guidelines in North America revealed that these design provisions can be safely applied to continuous beams.
February 2016
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Adwan, Osama K. "Engineering properties and structural behaviour of high strength reinforced concrete beams". Thesis, University of Abertay Dundee, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.360744.

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Libros sobre el tema "Shear Behaviour of SCFRC Beams"

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Franchuk, Cameron R. Block shear behaviour of coped steel beams. Edmonton, Alta: Dept. of Civil and Environmental Engineering, University of Alberta, 2002.

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Massam, Laurent. The behaviour of GFRP reinforced concrete beams in shear. Ottawa: National Library of Canada, 2001.

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Gupta, Pawan R. Shear behaviour of reinforced concrete beams subjected to high axial compression. Ottawa: National Library of Canada = Bibliothèque nationale du Canada, 1993.

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Deniaud, Christophe. Behaviour of reinforced concrete beams strengthened in shear with FRP sheets. Edmonton: Dept. of Civil and Environmental Engineering, University of Alberta, 2000.

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Thomas, David Andrew Bernard. The behaviour of composite beams with profiled steel sheeting and shot-fired shear connectors. Salford: University of Salford, 1989.

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Zarrog, Zarrog Mohammed. Shear behaviour of reinforced concrete beams: The study of deep beams (DRC) strengthened with externally bonded carbon fibre reinforced plastic (CFRP) sheets. Wolverhampton: University of Wolverhampton, 2002.

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Bessioud, Mohammed Salah. Behaviour of headed-stud shear connectors in composite L-beams. Bradford, 1988.

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Shear Behaviour of Hybrid Fibre Reinforced Geo Polymer Concrete Beams. ASDF International, 2017.

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Rahal, Khaldoun Najib. The behaviour of reinforced concrete beams subjected to combined shear and torsion. 1993.

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Capítulos de libros sobre el tema "Shear Behaviour of SCFRC Beams"

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Kaufmann, Walter. "Behaviour of Beams in Shear". En Strength and Deformations of Structural Concrete Subjected to In-Plane Shear and Normal Forces, 95–122. Basel: Birkhäuser Basel, 1998. http://dx.doi.org/10.1007/978-3-0348-7612-4_6.

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Randl, Norbert, Tamás Mészöly y Peter Harsányi. "Shear Behaviour of UHPC Beams with Varying Degrees of Fibre and Shear Reinforcement". En High Tech Concrete: Where Technology and Engineering Meet, 500–507. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-59471-2_60.

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Visser, Divan y William P. Boshoff. "Shear Behaviour of V-shape Webbed Steel Fibre Reinforced Concrete Beams". En RILEM Bookseries, 483–91. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-83719-8_42.

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Mihaylov, Boyan I. y Renaud Franssen. "Macro-Kinematic Approach for Shear Behaviour of Short Coupling Beams with Conventional Reinforcement". En High Tech Concrete: Where Technology and Engineering Meet, 1147–55. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-59471-2_133.

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Ranzi, Gianluca, Graziano Leoni, Raymond Ian Gilbert, Luigino Dezi y Riccardo Zandonini. "State-of-the-art review on the time-dependent behaviour of composite steel-concrete beams". En Time-dependent behaviour and design of composite steel-concrete structures, 61–82. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2021. http://dx.doi.org/10.2749/sed018.ch4.

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<p>This chapter provides an overview of the work carried out to date on the long-term behaviour of composite steel-concrete beams. In the first part of the chapter, a description of the components forming a composite member is presented. This is followed by an outline of the main kinematic concepts, such as full and partial shear interaction, that influence the structural response of this form of construction due to the flexibility of the shear connection provided between the concrete and steel components. The review of the work performed on the time-dependent behaviour of concrete and its influence on the long-term structural response of composite beams for building and bridge applications is then presented. The modelling and experimental work considered in the review highlights the importance of considering concrete time effects, when predicting the in-service response of composite beams.</p>
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Banjara, Nawal Kishor, K. Ramanjaneyulu, Saptarshi Sasmal y V. Srinivas. "Experimental Investigations on Behaviour of Shear Deficient Reinforced Concrete Beams Under Monotonic and Fatigue Loading". En Advances in Structural Engineering, 2299–307. New Delhi: Springer India, 2015. http://dx.doi.org/10.1007/978-81-322-2187-6_174.

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Chandran, Anjana A. y K. Girija. "Shear flexural behaviour of high strength concrete beams". En Recent Advances in Materials, Mechanics and Management, 131–33. CRC Press, 2019. http://dx.doi.org/10.1201/9781351227544-22.

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Randl, Norbert y Tamás Mészöly. "Fibre effect on shear behaviour of UHPC beams". En fib Bulletin 95. Fibre Reinforced Concrete: From Design to Structural Applications, 524–32. fib. The International Federation for Structural Concrete, 2020. http://dx.doi.org/10.35789/fib.bull.0095.ch53.

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Ortiz Navas, Francisco, Juan Navarro-Gregori, Pedro Serna Ros y Gabriel Leiva Herdocia. "Shear crack behaviour and shear deformation of polypropylene fibre-reinforced concrete slender beams". En fib Bulletin 95. Fibre Reinforced Concrete: From Design to Structural Applications, 101–10. fib. The International Federation for Structural Concrete, 2020. http://dx.doi.org/10.35789/fib.bull.0095.ch11.

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Nguyen, Viet Tue y Duc Tung Nguyen. "In uence of M/V-combination on the shear behaviour of members without stirrups". En fib Bulletin 85. Towards a rational understanding of shear in beams and slabs, 100–120. fib. The International Federation for Structural Concrete, 2018. http://dx.doi.org/10.35789/fib.bull.0085.ch06.

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Actas de conferencias sobre el tema "Shear Behaviour of SCFRC Beams"

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Lam, Dennis, Xianghe Dai y Eleonora Saveri. "Behaviour of Demountable Shear Connectors in Steel-Concrete Composite Beams". En International Conference on Composite Construction in Steel and Concrete 2013. Reston, VA: American Society of Civil Engineers, 2016. http://dx.doi.org/10.1061/9780784479735.047.

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Sheehan, Therese, Xianghe Dai, Jie Yang, Kan Zhou y Dennis Lam. "Flexural behaviour of composite slim floor beams". En 12th international conference on ‘Advances in Steel-Concrete Composite Structures’ - ASCCS 2018. Valencia: Universitat Politècnica València, 2018. http://dx.doi.org/10.4995/asccs2018.2018.6963.

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Composite slim floor beams comprise a steel section embedded in a concrete slab, offering the advantages of a steel-concrete composite structure combined with a reduced floor depth. Several mechanisms contribute to the shear connection in this type of beam, such as headed studs, friction and clamping effects and the using of reinforcement bars passing through holes in the steel beam web. However, to date, nobody has systematically identified these mechanisms and Eurocode 4 does not provide specific design guidance for slim floor beams. Hence, a series of shear beam tests and flexural beam tests were carried out in order to assess the degree of shear connection and connector capacity in these beams. The test set-up is described including different arrangements of shear connectors for each specimen. The paper presents the findings from the flexural beam tests. The results are compared with those from the previous shear beam tests. Numerical models will be developed in future to extend the data and include a wider range of parameters. The data will also be used to improve understanding of this type of beam and will lead to the provision of specific design guidelines for slim floor beams.
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Huber, Tobias, Patrick Huber, Johann Kollegger y Markus Vill. "Load carrying behaviour of beams with bent-up bars as shear reinforcement". En IABSE Symposium, Vancouver 2017: Engineering the Future. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2017. http://dx.doi.org/10.2749/vancouver.2017.0096.

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Bärtschi, Roland y Mario Fontana. "Composite Beams with Nonlinear Material and Connector Behaviour for Low Degrees of Partial Shear Connection". En Fifth International Conference on Composite Construction in Steel and Concrete. Reston, VA: American Society of Civil Engineers, 2006. http://dx.doi.org/10.1061/40826(186)54.

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Tee, Horng Hean, Kousay Al-Sanjery y Jeffrey Choong Luin Chiang. "Behaviour of reinforced concrete beams with confined concrete related to ultimate bending and shear strength". En ENGINEERING INTERNATIONAL CONFERENCE (EIC) 2016: Proceedings of the 5th International Conference on Education, Concept, and Application of Green Technology. Author(s), 2017. http://dx.doi.org/10.1063/1.4976924.

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"Assessment on the Behaviour of Cold-Formed Steel Built-up Beams". En Recent Advancements in Geotechnical Engineering. Materials Research Forum LLC, 2021. http://dx.doi.org/10.21741/9781644901618-12.

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Abstract. Cold-formed steel, thin-walled steel product finds a wide application in construction worldwide. It has many advantages such as flexibility, convenient handling and fabrication and so on. The CFS is commonly used in structures like bridges, railway coaches etc., as it is economical when compared with hot-rolled steel. It can be used as single or built-up flexural members. Generally, the open section beams are susceptible to failure by lateral- torsional buckling due to the position of its centre of shear and centroid of the cross-section. To overcome this issue, open doubly-symmetric built-up sections or built-up closed sections have been used by many researchers. The parametric studies were conducted by many researchers to find the accuracy of the design strength predictions of the built-up beams. In parametric study, Eurocode specifications, the direct strength method and effective width method based on the North American specifications were used. The study reveals that there are no proper design guidelines available in the current Eurocode and North American specifications. Therefore, the paper provides an outline of research works done on various CFS sections by the researchers and their proposed design recommendations to the codal specifications were also reviewed.
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Mirza, O., B. Uy y S. Krezo. "Experimental Studies on the Behaviour of Headed Stud Shear Connectors for Composite Steel Concrete Beams under Elevated Temperatures". En 7th International Conference on Steel and Aluminium Structures. Singapore: Research Publishing Services, 2011. http://dx.doi.org/10.3850/978-981-08-9247-0_rp066-icsas11.

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Al-Shuwaili, Mohammed Abdulhussein, Alessandro Palmeri y Maria Teresa Lombardo. "A novel one-sided push-out test for shear connectors in composite beams". En 12th international conference on ‘Advances in Steel-Concrete Composite Structures’ - ASCCS 2018. Valencia: Universitat Politècnica València, 2018. http://dx.doi.org/10.4995/asccs2018.2018.7063.

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Push-out tests (POTs) have been widely exploited as an alternative to the more expensive full-scale bending tests to characterize the behaviour of shear connections in steel-concrete composite beams. In these tests, two concrete slabs are typically attached to a steel section with the connectors under investigation, which are then subjected to direct shear. The results allow quantifying the relationship between applied load and displacements at the steel-concrete interface. Since this relationship is highly influenced by the boundary conditions of POT samples, different experimental setups have been used, where the slabs are either restricted or free to slide horizontally, as researchers have tried to reduce any discrepancy between POT and full-scale composite beam testing. Based on a critical review of various POT configurations presented in the dedicated literature, this paper presents an efficient one-sided POT (OSPOT) method. While OSPOT and POT specimens are similar, in the proposed OPSPOT setup only one of the two slabs is directly loaded in each test, and the slab is free to move vertically. Thus, two results can be obtained from one specimen, i.e. one from each slab. A series of POTs and OSPOTs have been conducted to investigate the behaviour and the shear resistance of headed stud connectors through the two methods of testing. The results of this study than were compared with those of different POTs setups conducted by other researchers. The new OSPOT results show in general an excellent agreement with the analytical predictions offered by both British and European standards, as well as the estimated shear resistance proposed other researchers in the literature. These findings suggest that the proposed one-sided setup could be used as an efficient and economical option for conducting the POT, as it has the potential not only to double the number of results, but also to simplify the fabrication of the samples, which is important in any large experimental campaign, and to allow testing with limited capacity of the actuator.
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9

de Ulzurrun, Gonzalo S. D., Carlos Zanuy, Morgan Johansson y Rasmus Rempling. "Impact propagation effects along reinforced concrete beams". En IABSE Symposium, Guimarães 2019: Towards a Resilient Built Environment Risk and Asset Management. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2019. http://dx.doi.org/10.2749/guimaraes.2019.0825.

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<p>This paper studies the time-dependent structural behaviour of concrete beams subjected to impact loading. Drop-weight tests have been carried out in 1180 x 100 x 100 mm longitudinally reinforced concrete beams. Experimental results have been obtained by combing a high speed camera with two-dimensional digital image correlation. The analysis focused on the dynamic internal forces distribution and wave propagation. Flexural moments and, especially, shear forces were greater than their static strengths, confirming the strain-rate dependence of both failure mechanisms and clarifying the sensitivity of concrete to develop brittle failure. Wave propagation analysis showed a variable velocity, decreasing as the slenderness of the effective span increased.</p>
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Lin, Weiwei. "Study on Steel-Concrete Composite Beams under Pure Negative Bending and Combined Negative Bending and Torsion". En IABSE Conference, Kuala Lumpur 2018: Engineering the Developing World. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2018. http://dx.doi.org/10.2749/kualalumpur.2018.0103.

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<p>Steel and concrete composite structures are widely used in both bridge and building structures due to their numerous advantages against conventional solutions. However, the design and analysis of continuous composite beams are rather complicated due to their different behaviour in positive (or sagging) and negative (or hogging) moment regions. Moreover, in the regions of negative moments,</p><p>e.g. at the internal support regions of continuous members, a large part of the composite beam section is subjected to torsional moment under certain loading conditions and curved composite structures or flyovers, thus the bottom flange and the web are susceptible to local instabilities and the concrete slab are easily to crack during its service life. In this study, a straight steel-concrete composite beam was tested to investigate their mechanical performance under pure negative bending and combined negative bending and torsional moments. Two-point loading condition with and without load eccentricities were applied to create necessary loading conditions. Load and deflection relationships, normal strain on the bottom flange of the steel main girder, and shear strain of the stud shear connectors at different sections were recorded in the test and reported in this paper. The results indicate that the classic beam design theory can be used for predicating the behaviour of a composite beam under pure negative bending moment. In addition, the failure mode and shear strain of shear connectors of the test specimen under combined negative bending and torsional moments were also discussed.</p>
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