Bibliografías temáticas / Semi-rigid connector

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Literatura académica sobre el tema "Semi-rigid connector"

Autor: Grafiati
Publicado: 4 de junio de 2021
Última modificación: 12 de febrero de 2022

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Artículos de revistas sobre el tema "Semi-rigid connector"

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Kuklík, Petr, Anna Kuklíková y Anna Gregorová. "Timber-Concrete Composite Structures with Semi-Rigid Connections". Key Engineering Materials 677 (enero de 2016): 282–87. http://dx.doi.org/10.4028/www.scientific.net/kem.677.282.

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This paper deals with behavior of timber-concrete composite structures with mechanical connection systems. The paper is focused to two different connection systems: using dowel-type fasteners and using special surface connector. Behavior of dowel-type connection system is based on modification of Johansen ́s equations valid for timber to timber connections. Behavior of connection system with special surface connector is evaluated by experiments and numerical simulations.
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Sandanus, Jaroslav, Kristián Sógel, Tomáš Klas y Michal Botló. "Experimental Verification of the Stiffness of a Semi-Rigid Timber Connection". Key Engineering Materials 832 (febrero de 2020): 63–72. http://dx.doi.org/10.4028/www.scientific.net/kem.832.63.

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Modern fasteners offer new options for the design of timber load-bearing structures. In the design, the traditional hinged connections are increasingly being replaced with semi-rigid connections. Nevertheless, there is no feedback from the actual structures with this kind of connection regarding the accuracy of static calculations. The authors therefore decided to test one connection and compare the results with those obtained from calculation models. The paper presents the experimental verification of the frame connection in which the semi-rigid action was achieved by combining the aluminium Sherpa connector and total thread Rothoblaas screws. The timber samples were provided by Latti Extra.
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Bidakov, Andrii, Evhenyi Raspopov y Oksana Pustovoitova. "Specificity of strength calculation for glued-in steel rods in LVL with unidirectional veneer". ACADEMIC JOURNAL Series: Industrial Machine Building, Civil Engineering 2, n.º 51 (12 de octubre de 2018): 196–201. http://dx.doi.org/10.26906/znp.2018.51.1315.

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Design of joints of LVL elements with glued-in steel rods and metal connectors is considered as semi-rigid connection and requires taking of account the compliance. A comparative analysis of the test results of the beams with a metal connector and glued-in steel rods as well as solid beams is made in the paper. Design method of glued-in rods in LVL is proposed and taken into account failure mode. It allows reducing the distance between the axes of the rods as well as the distance from the rod axіs to the edges in the cross section of the beam and increasing the joint strength.
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Gurkšnys, Kestutis, Audronis Kvedaras y Saulius Kavaliauskas. "BEHAVIOUR EVALUATION OF “SLEEVED” CONNECTORS IN COMPOSITE TIMBER‐CONCRETE FLOORS". JOURNAL OF CIVIL ENGINEERING AND MANAGEMENT 11, n.º 4 (31 de diciembre de 2005): 277–82. http://dx.doi.org/10.3846/13923730.2005.9636358.

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The paper presents the structural solution to the joisted floor when the timber joist of composite cross‐section and the concrete slab are interconnected via a special semi‐rigid connection and form a timber‐concrete joisted floor composite element. Tensioned bottom flange is formed of a solid timber joist, the web is of oriented strand boards (OSB) and the compressive top flange is of a concrete slab into which a part of the web is let in. Studies were carried out on the “sleeved” connector in this part of the web between OSB and concrete slabs that should increase the stiffness of this connection. Theoretical and experimental researches on inter‐behaviour of connection of the sub‐components of composite timber I beam-concrete were carried out, the obtained results are presented and evaluated.
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Ataei, Abdolreza y Mark A. Bradford. "Sustainable and Deconstructable Semi-Rigid Flush End Plate Composite Joints". Applied Mechanics and Materials 553 (mayo de 2014): 557–63. http://dx.doi.org/10.4028/www.scientific.net/amm.553.557.

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Composite construction is a popular and effective method of construction, exploiting the strengths of both reinforced concrete and structural steel in building construction in a complementary fashion. Within paradigms related to minimisation of emissions and maximisation of product recycling, these composite systems are problematic on a number of fronts. Firstly, common and traditional composite systems utilise ordinary Portland cement, which is known to be a very large contributor to atmospheric CO2 emissions. Secondly, for typical construction practices for steel-concrete composite systems, casting of the concrete onto profiled steel decking and conventional reinforcement placing are undertaken on-site, which is time consuming and labour intensive, and which can increase the cost of construction. Thirdly, composite action between the steel beam and the concrete slab is usually achieved by using headed shear studs. The headed shear studs connect these two elements permanently, which leads to much waste at the end of the service life of the building when it is demolished. This paper models a sustainable semi-rigid beam-to-column composite blind bolted connection with deconstructable bolted shear connectors using ABAQUS finite element (FE) software. In this “green” system, precast geopolymer concrete (GPC) slabs are attached compositely to the steel beam via pretensioned bolted shear connectors and the composite beam is connected to GPC-filled square columns using blind bolts. Non-linear material properties and non-linear geometric effects are considered in the simulation of a connection in hogging bending. Based on the FE modelling, using pretensioned bolts as shear connectors with GPC can improve the behaviour of semi-rigid flush end plate composite joints in terms of ductility and load capacity. Moreover, the behaviour of the bolted shear connectors should be considered in composite joint design as being very different to headed stud connectors.
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Gizejowski, M. A., W. Barcewicz y W. Salah. "Finite Element Modelling of the Behaviour of a Certain Class of Composite Steel-Concrete Beam-To-Column Joints / Skonczenie-Elementowe Modelowanie Zachowania Sie Pewnej Klasy Wezłów Zespolonych Stalowo-Betonowych W Połaczeniach Rygli Ze Słupami". Archives of Civil Engineering 56, n.º 1 (1 de marzo de 2010): 19–56. http://dx.doi.org/10.2478/v.10169-010-0002-0.

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Abstract Beam-to-column end-plate joints can be classified as rigid (fully restrained), semi-rigid (partially restrained) or pinned, depending on their type, configuration and the connector arrangement. Fully restrained joints are needed for rigid frames in which there is assumed that the frame joints have sufficient rigidity to maintain - under the service state - the angles between the intersecting members, ensuring the full moment transfer. In contrast in semi-continuous frames, partially restrained joints are characterized by relative rotations occurring between the intersecting members so that the bending moment can only be transferred partially. In recent years, the idea of using partially restrained, unstiffened joints in building structures has gained momentum since this idea appears to be more practical and economical. Semi-continuous frames can resist actions by the bending moment transfer in partially restrained joints, allowing in the same time for a certain degree of rotation that enhances the overall ductile performance of these structures. One of the effective ways that affects ductility of end-plate beam-to-column joints is to use thinner end-plates than those used nowadays in practical applications. In the current study, a certain class of steel-concrete composite joints is examined in which the thickness of end-plates is to be equivalent to approximately 40-60% of the bolt diameter used in all the composite joints investigated in the considered joint class. This paper is an extension of the authors’ earlier investigation on numerical modelling of the behaviour of steel frame joints. The aim of current investigations is to develop as simple as possible and yet reliable three-dimensional (3D) FE model of the composite joint behaviour that is capable of capturing the important factors controlling the performance of steel-concrete end-plate joints in which the end-plate thickness is chosen to be lesser than that used nowadays in conventional joint detailing. A 3D FE model constructed for composite joints of the considered joint class is reported in this paper and numerical simulations using the ABAQUS computer code are validated against experimental investigations conducted at the Warsaw University of Technology. Comparison between the nonlinear FE analysis and full scale experimental results of the considered class of composite joints is presented which conclusively allows for the accuracy assessment of the modelling technique developed. Comparison between the FE results and test data shows a reasonable agreement between the numerical FE model developed and physical model of experimentally examined joint specimens. Finally, practical conclusions for engineering applications are drawn.
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Hadade, Maria Ângela S., Marcelo de A. Ferreira, Roberto Chust Carvalho y Bruna Catoia. "Moment-Rotation Response of Beam-Column Connections in Precast Concrete Structures". Solid State Phenomena 259 (mayo de 2017): 269–74. http://dx.doi.org/10.4028/www.scientific.net/ssp.259.269.

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This paper provides an experimental investigation on the moment-rotation response of typical moment resisting beam-column connections, employing continuous negative bars consolidated with cast in place concrete over the precast beam and passing through grouted corrugated sleeves into an intermediate column. According to [1], the relative beam-column rotation is highly dependent on the elongation mechanism of the negative bars related to both the embedment length into the grouted sleeves and the development length over the beam end, being also inversely dependent on the vertical distance between the position of the top bars and the centre of rotation at end beam section. The flexural secant stiffness of the moment-rotation response is caused by a sum of the joint opening mechanisms at the beam-column interface and crack propagation within the connection zone, wherein the bond-slip at crack positions occurs prior to the first yielding of the negative bars. Therefore, the semi-rigid behaviour of the beam-column connections is associated with deformation mechanisms that occur at the SLS, but which also affects the global behaviour and stability analysis of precast frames at the ULS.Cruciform tests of full scale beam-column connections were carried out at the Precast Research Centre of the Federal University of Sao Carlos (Brazil), where 6 prototypes were studied varying the detailing of the positive connectors over the concrete corbel. The first pair of connectors employed elastomeric bearing pads with 2 vertical dowel bars, the second pair of connectors employed horizontal joints filled with grout with 2 vertical dowel bars and the last pair of connectors employed positive welded plates. The comparison between the experimental results showed that the smallest secant stiffness, which was obtained from the connector with elastomeric bearing pad, was corresponded to 89% and to 82% of the highest secant stiffness obtained for the connectors with welded plates and grouted joint, respectively. Therefore, the experimental results indicate that the major deformation mechanism within the beam-column connections is mostly dependent on the elongation of the top bars. Finally, a simplified analytical equation has been calibrated against the experimental results of the studied beam-column connections.
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MORITA, Koji, Kazumasa EBATO, Kazumasa DOI y Atsushi HIGUCHI. "STRUCTURAL BEHAVIOUR OF 2 BAY-2 STOREY STEEL FRAME CONNECTED WITH SEMI-RIGID CONNECTOIN : A study on seismic performance of semi-rigid connection in steel frame". Journal of Structural and Construction Engineering (Transactions of AIJ) 60, n.º 473 (1995): 197–205. http://dx.doi.org/10.3130/aijs.60.197.

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Markazi, F. D., R. G. Beale y M. H. R. Godley. "Experimental analysis of semi-rigid boltless connectors". Thin-Walled Structures 28, n.º 1 (mayo de 1997): 57–87. http://dx.doi.org/10.1016/s0263-8231(97)00003-7.

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Markazi, F. D., R. G. Beale y M. H. R. Godley. "Numerical modelling of semi-rigid boltless connectors". Computers & Structures 79, n.º 26-28 (noviembre de 2001): 2391–402. http://dx.doi.org/10.1016/s0045-7949(01)00058-x.

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Tesis sobre el tema "Semi-rigid connector"

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Koseoglu, Ahmet. "A Finite Element Model For Partially Restrained Steel Beam To Column Connections". Master's thesis, METU, 2013. http://etd.lib.metu.edu.tr/upload/12615736/index.pdf.

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In the analyses of steel framed structures it is customary to assume the beam to column connections as either fully rigid which means that all moments are transferred from beam to column with negligible rotation or ideally pinned that resists negligible moment. This assumption is reasonable for some types of connections. However when considering steel connections such as bolted-bolted double web angle connections it can be seen that the behavior of these connections is in between the two extreme cases. Thus a third connection type, namely semi rigid or partially restrained connection, is introduced. However this type of connection exhibits such a nonlinear behavior that modeling this behavior necessities a substantial effort. Moreover to perform a performance based analyses the true behavior of these connections should be incorporated as part of the modeling effort. Several researches dealing with these two topics have been undertaken in literature. Despite these efforts, modeling of the moment rotation behavior of these connections still requires improvement especially under cyclic loading conditions. In addition to this, performing an analysis with existing elements incorporating semi-rigid connections as a spring attached to beam ends is not practical because of the fact that displacement based formulation increases meshing significantly which requires substantial computational power. In this study a hysteretic (quadra-linear) moment rotation model considering pinching, damage and possibility of residual moment capacity is developed. The behavior is calibrated via experimental data available in the literature. Furthermore a force based macro element considering spread inelastic behavior along the element is presented. With this element several connections located anywhere along the beam could be incorporated in the analysis with less degree of freedom with respect to displacement based elements. Moreover the macro element model can be used in conjunction with corotational formulation for the capture of nonlinear geometric effects.
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Davaee-Markazi, Farid. "Experimental and theoretical analysis of boltless semi-rigid connectors". Thesis, Oxford Brookes University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.325291.

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CARDOSO, DEVANEY CRISTINA LIMA. "NUMERICAL MODELING OF SEMI-RIGID CONNECTION FOR STEEL STRUCTURES". PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 1999. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=1270@1.

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COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR
Ligações semi-rígidas em estruturas de aço tem apresentado uso crescente na construção metálica, pois é uma opção que permite um melhor aproveitamento da capacidade da estrutura. Neste trabalho apresentam-se as características e a classificação das ligações semi-rígidas bem como a evolução da modelagem numérica e analítica do comportamento destas ligações. Apresenta-se uma metodologia com base no método dos elementos finitos para avaliar numericamente a relação momento-rotação de conexões viga-coluna em estruturas de aço. Parte essencial desta metodologia é a modelagem da ligação e de seus diversos componentes. Um modelo completo em termos da geometria, capaz de representar a interação entre os diversos componentes da conexão é proposto. Esta modelagem inclui a discretização de todos os componentes da conexão: placa e ou cantoneiras, porcas, coluna e viga, sendo a extensão da viga e da coluna a ser considerada no modelo escolhida por calibração do mesmo. O contato entre os componentes da ligação é considerado por meio de algoritmo específico de contato com base na formulação de um problema linear complementar. Considera-se contato sem atrito entre corpos deformáveis. A fim de representar com mais fidelidade as características tridimensionais do problema, adota-se uma modelagem também tridimensional com base em elementos finitos híbridos hexaédricos de oito nós, permitindo o emprego de uma discretização relativamente grosseira. Fenômenos como a presença de grandes deformações, plastificação dos componentes e a pré-tensão dos parafusos são incluídos no modelo. Os modelos apresentados são empregados para o estudo do comportamento de ligações tipo placa de extremidade estendida e tipo cantoneira de alma simples. Para validação dos modelos são comparados os resultados numéricos com dados experimentais. Analisa-se também a participação da flexibilidade dos diversos componentes da conexão, tais como: parafuso, placa de extremidade, mesa da coluna, na resposta da conexão.
Semi-rigid connections are now-a-days widely employed by steel structures. Such connections take better advantage of the overall structure capabilities. In this work the properties and classification of semi-rigid connections is discussed. Additionally numerical and analytical models for prediction of connection behavior are presented. A finite element based methodology for the numerical evaluation of moment-rotation relations and load carrying capacity of semi-rigid connections is proposed. An important feature of this model is a complete a three dimensional geometrical description of the many components of the connection, such as plates, column, beam, bolts and nuts and the interaction between them. The extension of beam and column to be modeled is determined by numerical calibration. Frictionless contact between the connection components is considered by a specific contact algorithm which ensures non- penetration and permits separation of the individual parts. In this work a solution strategy for the contact problem based on the establishment of a linear complementary problem is adopted. The three dimensional modeling is carried out by a mesh of hybrid hexahedral eight node elements, which allow the use of relatively coarse meshes. Effects such as the presence of large deformations, yielding of components and pre- stressing of bolts are present in the model. The proposed model is applied to the analysis of the behavior of extended end-plate connections and web cleat connections. The numerical results are compared to experimental data for model validation. One of the objectives of this analysis is the evaluation of the participation of each component on the overall flexibility of the connection.
El uso de ligaduras semirígidas en extructuras de acero ha experimentado un crescimiento importante en la construcción metálica. Esta opción permite un mejor aprovechamiento de la capacidad de la extructura. En este trabajo se presentan las características de las ligaduras semirígidas, su clasificación; y la evolución de los modelos numéricos y analíticos del comportamiento de estas ligaduras. Se discute una metodología con base en el método de los elementos finitos para evaluar numéricamente la relación momento-rotación de conexiones viga-columna en extructuras de acero. La parte esencial de esta metodología es el modelo de la ligadura y sus diversos componentes. Se propone un modelo completo en términos de geometría, capaz de representar la interacción entre los diversos componentes de la conexión. Este modelo incluye la discretización de todos los componentes de la conexión, siendo que la extensión de la viga y de la coluna a ser considerada en el modelo, deberá ser elegida por calibración del mismo. Para considerar el contacto entre los componentes de la ligadura se utiliza el algoritmo específico de contacto con base en la formulación de un problema lineal complementar. A fin de representar con más fidelidad las características tridimensionales del problema, se adoptó un modelo tridimensional con base en elementos finitos híbridos hexaédricos de ocho nodos, permitiendo el empleo de una discretización relativamente grosera. Se incluyen en el modelo fenómenos como la presencia de grandes deformaciones, plastificación de los componentes y la pretensión de los tornillos. Los modelos presentados se emplean en el estudio del comportamiento de ligaduras tipo placa de extremidad extendida y tipo esquinero de alma simple. Para evaluar los modelos se comparan los resultados numéricos con datos experimentales. También se incluye un análisis de la participación en la respuesta de la conexión, de la flexibilidad de los diversos componentes de la conexión, tales como: tornillo, placa de extremidad, mesa de la columna.
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Troup, Simon. "Numerical analysis and investigation of composite semi-rigid connections". Thesis, University of Southampton, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.286960.

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GAO, XIAOJIANG. "STRENGTH DETERMINATION OF HEAVY CLIP-ANGLE CONNECTION COMPONENTS". University of Cincinnati / OhioLINK, 2002. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1134401462.

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SILVA, RAQUEL ALVES CABRAL. "THEORETICAL AND EXPERIMENTAL ANALYSIS OF A COMPOSITE SEMI-RIGID BEAM-TO-COLUMN JOINT USING PERFOBOND SHEAR CONNECTORS". PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2015. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=27553@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO
COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR
PROGRAMA DE EXCELENCIA ACADEMICA
Nos projetos de engenharia é comum desconsiderar-se o comportamento semirrígido das ligações, ou seja, as ligações são assumidas com as condições ideais de rigidez. A primeira condição ideal é aquela na qual há transferência total de momento fletor, assumindo-se que não existe rotação relativa entre os elementos ligados, estas ligações são as chamadas rígidas. Na segunda opção, a transferência de momento fletor é desconsiderada e a ligação é definida como rotulada ou simples. Entretanto, sabe-se que a maioria das ligações comporta-se como semirrígida e o problema é que ao se fazer essas simplificações em projeto, dois aspectos podem ser comprometidos: segurança estrutural e custo do projeto. Neste trabalho, uma ligação semirrígida mista é proposta e estudada com o objetivo de obter-se as suas características principais e necessárias para utilizá-la em projeto: curva momento-rotação, rigidez de serviço e momento fletor resistente. Com a ligação mista proposta, busca-se uma nova maneira de transferência de forças na região de momento negativo em uma viga semicontínua. Adotou-se para a transferência dos esforços, entre a laje de concreto e a viga de aço, conectores de cisalhamento do tipo Perfobond Rib. Este conector foi inicialmente utilizado em pontes e depois alguns estudos o viabilizaram para o uso em edificações. Para atingir os objetivos do trabalho, foram realizados dois ensaios em escala real das ligações propostas. Os testes experimentais foram feitos em modelos cruciformes invertidos e realizados no laboratório de estruturas e materiais da PUC-Rio. Os resultados experimentais foram comparados com dois modelos analíticos: o método proposto por Leon et al. em 1996 e o método presente no Anexo R da NBR 8800:2008.
In engineering design it is common to disregard the semi-rigid behavior of connections, i.e., connections are assumed to have the ideal conditions of rigidity. The first ideal condition is the one in which there is full transfer of bending moment, assuming that there is no relative rotation between the connected elements, this connection is defined rigid. In the second option, the transfer of bending moment is disregarded and the connection is defined simple. However, it is known that most connections have a semi-rigid behavior and the problem is that when making these simplifications in design, two aspects can be compromised: structural safety and project cost. In this work, a composite semi-rigid connection is studied in order to obtain its main and necessary features to use it in design: moment-rotation curve, service rigidity and bending moment capacity. With the proposed composite connection, a new way to transfer forces in the negative moment region on a semicontinous beam. Shear connectors like the Perfobond Rib were adopted for the transfer of efforts between the concrete slab and the steel beam. This connector was first used on bridges and since then some studies have made possible its use in buildings, showing its advantages over the more usual connectors. To achieve this work s objectives, two real scale tests of the proposed connections were conducted. Experimental tests were done in inverted cruciform models and carried out in the laboratory of structures and materials at PUC-Rio. Information on these tests was obtained, such as displacements, strains, and cracking of the slab. The experimental results were compared to two analytical models: the method proposed by Leon et al. in 1996 and the present method in Annex R of NBR 8800: 2008.
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Metin, Tolga. "A Parametric Study On The Influence Of Semi-rigid Connection Nonlinearity On Steel Special Moment Frames". Master's thesis, METU, 2013. http://etd.lib.metu.edu.tr/upload/12615725/index.pdf.

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In practice, steel frames are analyzed and designed by assuming all beam to column connections as either rigid or simple. In real life, there are no such idealizations as rigid or simple and all connections would actually belong to a group of connections named as semi rigid connections. Various difficulties exist in modeling an accurate non-linear behavior of a steel structure, where one of these challenges is the modeling of semi-rigid behavior of connections. A detailed finite element model would take into account the complex interaction between all surfaces due to contact, friction and bolt pretension besides the material and geometrical nonlinearity effects. All these nonlinearity effects could be simply lumped as a moment-rotation type model at the connection region. Such a methodology is followed in this thesis and the main aim is to study the lumped nonlinear behavior of steel semi-rigid connections on the overall structural responses of steel Special Moment Frames. In this thesis three, nine and fifteen story steel Special Moment Frames are analyzed and designed as rigid frames first, and then the frames are reanalyzed considering non-linear effects due to semi-rigid connections. Changes in the ductility and overstrength reduction factors obtained from pushover curves are compared between the rigid and semi rigid modeling alternatives.
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Aguiar, Eduardo Aurélio Barros. "Comportamento de chumbadores grauteados de ligações viga-pilar parcialmente resistentes a momento fletor". Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/18/18134/tde-11062010-093358/.

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Neste trabalho estudou-se o comportamento dos chumbadores grauteados, usados em ligações viga-pilar parcialmente resistentes a momento fletor. O foco da pesquisa foi a análise teórica e experimental do mecanismo resistente do chumbador inclinado. O programa experimental englobou 15 modelos, sendo que as variáveis analisados foram: a) diâmetros dos chumbadores, de 16 mm, 20 mm e 25 mm; b) inclinações dos chumbadores, de 0º (chumbador normal à interface), 45º e 60º; c) resistência à compressão do concreto adjacente ao chumbador, sendo usado concreto das classes C35 e C50; d) aplicação de força de compressão normal à interface. Os resultados experimentais indicaram aumentos significativos tanto na capacidade última quanto na rigidez a cisalhamento do chumbador. Foram realizadas simulações numéricas, onde foi verificada a sensibilidade dos resultados aos parâmetros inerentes à interface concreto - almofada de apoio, sendo desenvolvidas expressões para estimar tais parâmetros. Com base na análise experimental e em análises numéricas, foram propostos modelos analíticos que conseguiram representar de forma satisfatória a influência da inclinação e demais parâmetros analisados no mecanismo resistente do chumbador.
This research deals with the behavior of grouted dowels, used in partial moment resistant beam-to-column connections. The focus of the research was the theoretical and experimental analysis of dowels resistant mechanism. The experimental program include 15 models, and its variables analyzed were: a) the dowel diameter of 16 mm, 20 mm and 25 mm; b) the dowel inclination of 0° (dowels perpendicular to the interface), 45° and 60°; c) compressive strength of concrete adjacent to the dowels of classes C35 and C50, d) application of compression load, normal to the interface. Experimental results indicated significant increases in ultimate capacity and the shear stiffness of the dowels. Numerical simulations were carried out which identified the sensitivity of results to the parameters of the interface concrete bearing pad, and developed expressions to estimate such parameters are given. Based on experimental and numerical analysis analytical models have been proposed that could adequately represent the influence of inclination and other parameters in the mechanism resistant dowels.
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Kozma, Thomas Mathias A. "Analytical Investigation of the Effect of Partially-Restrained Connections on Hybrid Moment-Resisting Steel Frames". University of Cincinnati / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1406819681.

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ZHOU, FENGFENG. "MODEL-BASED SIMULATION OF STEEL FRAMES WITH ENDPLATE CONNECTIONS". University of Cincinnati / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1119316578.

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Capítulos de libros sobre el tema "Semi-rigid connector"

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Sunca, F. y M. Akköse. "Evaluation of seismic performance of semi-rigid connected prefabricated structures". En Insights and Innovations in Structural Engineering, Mechanics and Computation, 342–47. Taylor & Francis Group, 6000 Broken Sound Parkway NW, Suite 300, Boca Raton, FL 33487-2742: CRC Press, 2016. http://dx.doi.org/10.1201/9781315641645-57.

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Kaveh, Ali y Armin Dadras Eslamlou. "Optimum Design of Castellated Beams with Composite Action and Semi-rigid Connection". En Metaheuristic Optimization Algorithms in Civil Engineering: New Applications, 51–71. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-45473-9_3.

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Mohammed, Douaa R. y Murtada A. Ismael. "Effect of Semi-rigid Connection on Post-buckling Behavior of Braced-Steel Frames". En Proceedings of AICCE'19, 547–56. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-32816-0_37.

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Kishi, Norimitsu. "PR CONNECTION DATABASE". En Practical Analysis for Semi-Rigid Frame Design, 261–323. WORLD SCIENTIFIC, 2000. http://dx.doi.org/10.1142/9789812813244_0006.

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Chan, S. L. y P. P. T. Chui. "Connection behaviour and models". En Non-Linear Static and Cyclic Analysis of Steel Frames with Semi-Rigid Connections, 93–121. Elsevier, 1999. http://dx.doi.org/10.1016/b978-008042998-4/50006-5.

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White, Donald W. y Wai-Fah Chen. "Characteristic semi-rigid connection relationships for frame analysis and design". En Connections in Steel Structures III, 299–308. Elsevier, 1996. http://dx.doi.org/10.1016/b978-008042821-5/50087-0.

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Chan, S. L. y P. P. T. Chui. "Cyclic behaviour of flexibly connected elastic steel frames". En Non-Linear Static and Cyclic Analysis of Steel Frames with Semi-Rigid Connections, 195–263. Elsevier, 1999. http://dx.doi.org/10.1016/b978-008042998-4/50008-9.

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Chan, S. L. y P. P. T. Chui. "44. Non-linear dynamic analysis of roof trusses connected by rigid, pinned and semi-rigid joints". En Space Structures 4, 1: 406–412. Thomas Telford Publishing, 1993. http://dx.doi.org/10.1680/ss4v1.19683.0044.

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"Hysteretic Behavior of CFT Columns with Semi- Rigid Base Connection under Different Loading Modes". En Materials in Environmental Engineering, 213–20. De Gruyter, 2017. http://dx.doi.org/10.1515/9783110516623-021.

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"Dynamic response analysis of steel portal frames with semi-rigid connection under impact loading". En Behaviour of Steel Structures in Seismic Areas, 1017–22. CRC Press, 2012. http://dx.doi.org/10.1201/b11396-154.

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Actas de conferencias sobre el tema "Semi-rigid connector"

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Gryto̸yr, Guttorm. "Improving Operating Window for Disconnect Operations of CWO Risers". En ASME 2010 29th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2010. http://dx.doi.org/10.1115/omae2010-20976.

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The term ‘riser recoil’ refers to the situation when the lower end of a top tensioned riser is released, and the riser is lifted up by the riser tensioner and/or top motion compensator system on the supporting vessel. The elastic energy stored in the riser is then released, and the riser ‘recoils’. This paper focuses on the case of planned disconnect, and builds on ref. [1] which was based on a simplified riser analysis using a rigid body to represent the riser. In the present paper, the methodology has been applied to an elastic riser model in the riser analysis software RIFLEX, from MARINTEK in Trondheim, Norway, which includes axial damping elements required for modeling of the tensioner systems. Completion and Work Over (CWO) risers are unique in the sense that they may be simultaneously connected to both the riser tensioner system and the top motion compensator system of a drilling vessel. A Marine Drilling riser, on the other hand, is only connected to the riser tensioner system. Typically the riser tensioner system has a stroke of ± 8–9 m, whereas the top motion compensator system has only ± 3.5–4 m. It is imperative that the connector is lifted clear of the subsea structure in order to avoid damage to the equipment after the riser has been disconnected. The operating window for planned disconnect of CWO risers is severely limited by the available stroke of the top motion compensator. One of the purposes of the disconnect analysis is to establish the maximum wave height at which there is still sufficient clearance between the connector and the subsea structure after disconnect. Previous experience has shown that this may be the governing limitation for workover operations. The analysis may also establish a maximum tension level, and seastate, to avoid hard stroke-out of the top motion compensator cylinders. This requires an elastic riser model, since a rigid body will yield unphysically large impulse loads in case of stroke-out. The current industry practice is to use a regular wave approach in the analysis. In accordance with ref. [1], the present analysis is performed with irregular wave analyses. The results are documented through a case study of a typical CWO riser system connected to a semi-submersible in typical North Sea environmental conditions. The semi-submersible and the CWO riser system are exposed to irregular waves. Comparison of the resulting allowable wave height shows that using the approach presented here with an elastic riser model yields less conservative results than the previous methodology with a rigid body model. This should be coupled to the findings with the rigid riser model, ref. [1], that irregular waves yield a considerable increase in the operating window, and the resulting operability, compared to a regular wave analysis. Hence, using a regular wave approach combined with a simplified riser model that neglects the flexibility of the riser is expected to yield overly conservative results for the EQDP elevation after disconnect.
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SHARMA, Vijay, Mahendra Kumar SHRIMALI, Shiv Dayal BHARTI y Tushar Kanti DATTA. "SEISMIC ENERGY DISSIPATION IN SEMI-RIGID CONNECTED STEEL FRAMES". En The 16th World Conference on Seismic Isolation, Energy Dissipation and Active Vibration Control of Structures. Russian Association for Earthquake Engineering and Protection from Natural and Manmade Hazards, 2019. http://dx.doi.org/10.37153/2686-7974-2019-16-705-717.

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Nannan, Zhou y Wang Lai. "Nonlinear Finite Element Computation on Semi-rigid Connection and Steel Frame". En 2010 Third International Conference on Information and Computing Science (ICIC). IEEE, 2010. http://dx.doi.org/10.1109/icic.2010.323.

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Wang, Chien Ming, Zhi Yung Tay, Rui Ping Gao y Chan Ghee Koh. "Hydroelastic Response of VLFS With a Hinge or Semi-Rigid Line Connection". En ASME 2010 29th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2010. http://dx.doi.org/10.1115/omae2010-20664.

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This paper is concerned with the hydroelastic response of pontoon-type, very large floating structures (VLFS) with a hinge or semi-rigid line connection. For the hydroelastic analysis, water is modeled as an ideal fluid and its motion is assumed to be irrotational so that a velocity potential exists. The VLFS is modeled by a plate according to the Mindlin plate theory. In order to decouple the fluid-structure interaction problem, the modal expansion method is adopted for the hydroelastic analysis that is carried out in the frequency domain. The boundary element method is used to solve the Laplace equation together with the fluid boundary conditions for the velocity potential, whereas the finite element method is adopted for solving the deflection of the floating plate. This study examines the effect of the rotational stiffness and the location of such a semi-rigid line connection on the hydroelastic response. Hinge and semi-rigid line connections are found to be effective in reducing hydroelastic response of VLFS, depending on the wavelength.
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Fabriciuss, Janis y Lilita Ozola. "Duration of load effects on development of deformations in bolted moment connection". En Research for Rural Development 2020. Latvia University of Life Sciences and Technologies, 2020. http://dx.doi.org/10.22616/rrd.26.2020.034.

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Experience saved in the construction industry shows that the timber portal frames with semi-rigid connections at knee joint exhibit permanently increase displacements at the knee and apex point. Normally, timber portal frame with semi-rigid knee joint connection is made with mechanical fasteners located in double circles and cannot be designed without relevant rotation at connection during structures’ exploitation time. The only way to increase connection rigidity is to rise distance from fasteners location at connection, but at the same time, the tension and shear stress become significant at the external section of members. The previous experience is obtained by a model testing showing that deformations at semi-rigid connections are non-linear. These were tests under short-term load and did not disclose creep effects, which can be significant. This study is aimed at the examination of increasing deformations with time under constant static load (creep effects) in semi-rigid dowelled connection. Experimental test models were made and set under long-term load in controlled environmental conditions (heated laboratory room). Results show a significant creep influence to decrease connection stiffness. Corresponding numerical test of orthotropic 3d model by Dlubal RFEM software tools was performed analyzing the value of expected deformations. Results of the numerical test showed that friction between timber elements and extra nuts on bolts can increase connection stiffness. Research results in this stage show that the creep can affect connection stiffness more than expected. Also, experimental test results showed lower deformation values comparing with the ones obtained by the numerical test.
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Athar, Farooq Ahmed, Zainah Ibrahim, Ashraf Adel Almohagry, Muhammad Usman Hanif y Ahmad Zaki. "Finite Element Modelling of Semi-Rigid Beam to Column Connection With Partly Hidden Corbel". En 4th International Conference on Sustainable Innovation 2020–Technology, Engineering and Agriculture (ICoSITEA 2020). Paris, France: Atlantis Press, 2021. http://dx.doi.org/10.2991/aer.k.210204.016.

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Ataei, A. y M. A. Bradford. "FE Modelling of Sustainable Semi-Rigid Flush End Plate Composite Joints with Deconstructable Bolted Shear Connectors". En International Conference on Composite Construction in Steel and Concrete 2013. Reston, VA: American Society of Civil Engineers, 2016. http://dx.doi.org/10.1061/9780784479735.027.

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Ryu, Yonghee, Anahid Behrouzi, Tsega Melesse y Vernon C. Matzen. "Inelastic Behavior of Threaded Piping Connections: Reconciliation of Experimental and Analytic Results". En ASME 2011 Pressure Vessels and Piping Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/pvp2011-57949.

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Modeling the behavior of piping systems with threaded joints is difficult because the joints do not act as rigid connections. At one level of approximation the connection can be modeled as a semi-rigid connection using a rotational spring. This study modeled a straight pipe using either Euler-Bernoulli beam elements [4] or Finite Element Analysis (FEA) shell elements and a support condition using the rotational spring. Laboratory tests were conducted on 1 in. diameter specimens of black iron Schedule 40 pipe in a cantilever configuration. The specimen was loaded monotonically into the inelastic region. A Ramberg-Osgood model [5] was used to represent the rotational spring and the correlation between test results and analytical predictions was quite good.
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Tao Xu, Jieqiong Lin, Yingchun Li, Wenjie Zuo y Wei Ju. "Notice of Retraction: Semi-rigid connection used to model the joint in the conceptual design of car bodie". En 2010 2nd International Conference on Computer Engineering and Technology (ICCET). IEEE, 2010. http://dx.doi.org/10.1109/iccet.2010.5485753.

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Mi, Shan y Zhuan Wang. "Analysis of the effects of column-to-ground semi-rigid connection on the mechanical properties of assembled rack". En 5th International Conference on Information Engineering for Mechanics and Materials. Paris, France: Atlantis Press, 2015. http://dx.doi.org/10.2991/icimm-15.2015.314.

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Informes sobre el tema "Semi-rigid connector"

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BEHAVIOUR AND MATHEMATICAL MODEL FOR SEMI- RIGID THREADED- SLEEVE CONNECTION. The Hong Kong Institute of Steel Construction, mayo de 2019. http://dx.doi.org/10.18057/ijasc.2019.15.2.1.

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INFLUENCE OF RANDOM GEOMETRICAL IMPERFECTION ON THE STABILITY OF SINGLE-LAYER RETICULATED DOMES WITH SEMI-RIGID CONNECTION. The Hong Kong Institute of Steel Construction, marzo de 2019. http://dx.doi.org/10.18057/ijasc.2019.15.1.12.

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HYSTERETIC PERFORMANCE OF WEAK-AXIS CONNECTION WITH I-SHAPED PLATES IN STEEL FRAME. The Hong Kong Institute of Steel Construction, septiembre de 2021. http://dx.doi.org/10.18057/ijasc.2021.17.3.1.

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This paper elucidates numerically the behavior of weak-axis moment connections proposed by welding I-shaped plates in the H-section column to increase connection strength and ductility in steel frame. After validating the numerical methods through comparing the results of numerical analysis and experiments, the effectiveness of the proposed weak-axis connection were examined through comparing to the traditional weak-axis connection. The proposed weak-axis connection could move the highest stresses away from the start-stop points of a weld, and thus preventing the premature brittle fracture of the beam flange welds. The plastic hinge formed away from the beam-column interface, while the local buckling occurred in the weld access holes region in the traditional weak-axis connection. The proposed weak-axis connections can be classified as rigid in a strong-bracing system, and be classified as semi-rigid in weak-supported or unsupported system. And then a series of parametric studies was conducted to better understand the behavior of proposed weak-axis moment connections. The force-displacement relationships, location of the plastic hinge, Mises index (MI), triaxiality index (TI) and rupture index (RI) distributions at the beam flange welds were reported in detail. According to the numerical analysis, the design variables of I-shaped plates and widened flange plate are suggested, along with a design procedure.
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