Analytical Model of Semi-Rigid Composite Joints with Steel Beams and Precast Hollowcore Slabs

2007 ◽  
Author(s):  
Dennis Lam ◽  
Jianqiao Ye ◽  
Feng Fu
Keyword(s):  
Analytical Model ◽  
Steel Beams ◽  
Composite Joints

An analytical model for the strength prediction of hybrid (bolted/bonded) composite joints

2013 ◽  
Vol 97 ◽  
pp. 252-260 ◽  
Author(s):  
Christophe Bois ◽  
Hervé Wargnier ◽  
Jean-Christophe Wahl ◽  
Erwann Le Goff
Keyword(s):  
Analytical Model ◽  
Strength Prediction ◽  
Composite Joints ◽  
Bonded Composite

Analytical model for composite joints under sagging moment

2015 ◽  
Vol 101 ◽  
pp. 399-411 ◽  
Author(s):  
M.A. Bennacer ◽  
A. Beroual ◽  
A. Kriker ◽  
Jean-François Demonceau
Keyword(s):  
Analytical Model ◽  
Composite Joints

scholarly journals Part I: The Analytical Model Predicting Post-Yield Behavior of Concrete-Encased Steel Beams Considering Various Confinement Effects by Transverse Reinforcements and Steels

Materials ◽  
2019 ◽  
Vol 12 (14) ◽  
pp. 2302
Author(s):  
Nguyen ◽  
Hong
Keyword(s):  
Analytical Model ◽  
Limit State ◽  
Maximum Load ◽  
Composite Beams ◽  
Steel Beams ◽  
Compression Zone ◽  
Element Analysis ◽  
Yield Behavior ◽  
Steel Sections ◽  
Steel Section

The purpose of the work was to propose analytical model considering double confinements (provided by both transverse reinforcements and a wide flange steel section), which was verified by the nonlinear finite element analysis considering concrete-damaged plasticity. The scope of the effort and the procedures to achieve the aim of this study included the identification of the concrete confinements provided by both transverse reinforcements and a wide flange steel section based on the elasto-plastic model in tension for both rebar/steel sections and elasto-buckling for rebars in compression. The influence of rebar buckling in the compression zone on flexural moment strength was also investigated with and without considering confining effects offered by steel sections. The analytical approach predicted a post-yield behavior of composite beams based on the confining effect offered by both the shear reinforcement and wide steel flange sections. However, for beams without axial loads, the compressive zones with high and partial confinements for concrete sections at the yield and maximum load limit state were limited when compressive buckling failure was not considered, preventing the confining factors from significantly influencing the flexural load resisting capacity. An accurate flexural capacity of composite beams can be obtained when rebar was modeled with buckling in the compression zone.

scholarly journals An Extended Spring-mass Model of Single-lap Multi-bolt Composite Joints Considering Assembly Gap and Gap Shimming

2021 ◽  
Author(s):  
yuxing yang ◽  
Yongjie Bao ◽  
Jinlong Wang ◽  
Fengming Du
Keyword(s):  
Finite Element ◽  
Analytical Model ◽  
Relative Error ◽  
Joint Stiffness ◽  
Shear Stiffness ◽  
Shear Loading ◽  
Maximum Relative Error ◽  
Composite Joints ◽  
Composite Joint ◽  
Proposed Model

Abstract To investigate the effect of assembly gap and shim on single-lap multi-bolt composite joint stiffness, an analytical model based on the spring-mass method was proposed, which converted the multi-bolt joints into individual single-bolt joint based on premise that there are no overlap regions of the highly stressed portions for adjacent holes. The proposed model considers the conical and spherical stress envelope and gradual elimination phenomenon of the bolt-hole clearances for multi-bolt joints. Meantime, an effective-to-equivalent gap area method was proposed to calculate the joint stiffness for situations with arbitrary assembly gap shape. Both experiment and finite element method for three-bolt joints were used to validate the proposed model with different situations of assembly gap and/or shim. The relative error of the shear stiffness between the analytical model and experiment is 0.31%, while that of the bolt stiffness is 19.8%. After that, four interested situations with different assembly gap and/or shims were discussed, and the maximum relative error of the shear stiffness between the analytical model and the finite element model is17.0%, while that of the bolt stiffness is 15.8%. Taking into account the complexity of composite material and that of assembly gap and gap shimming, the proposed analytical model is effective to predict the stiffness of the single-lap multi-bolt composite joints subjected to single-shear loading.

scholarly journals ANALYTICAL MODEL FOR THE PREDICTION OF THE ELASTIC RESPONSE OF CURVED T-STUBS

2021 ◽  
Vol 27 (7) ◽  
pp. 515-524
Author(s):  
Andrej Mudrov ◽  
Jean-Pierre Jaspart ◽  
Adrien Corman ◽  
Antanas Šapalas
Keyword(s):  
Analytical Model ◽  
Composite Structures ◽  
High Strength ◽  
Concrete Columns ◽  
Elastic Response ◽  
Steel Beams ◽  
Wide Adaptation ◽  
Cfst Columns ◽  
Concrete Filled Steel Tubes ◽  
Further Development

Composite steel-concrete columns utilise the advantages of both materials, by combining high strength and ductility of steel with the compressive strength of the concrete. But the wide adaptation of composite structures is limited, mainly because of the lack of cheap and easy to construct connections, as many of which require costly and timeconsuming on-site welding, when circular concrete filled steel tubes (CFST) are adopted. New connections, like those incorporating the use of blind bolts and curved end-plates, may represent a valuable alternative. Such joints can be adapted to circular CFST to eliminate on-site welding, but they require the creation of new curved T-stub components. This paper proposes an analytical model for the evaluation of bolt forces in the curved T-stubs within the elastic range. The model is then validated against experimental results of joints between circular CFST columns and steel beams, with both preloaded and snug tightened bolts. Analytical model shows good agreement with experimental data, but needs further development to take into account the prying forces.

scholarly journals Deconstructable Flush End Plate Beam-to-Column Composite Joints: Component- Based Modelling

2018 ◽  
Author(s):  
Mark Andrew Bradford
Keyword(s):  
Composite Structures ◽  
Precast Concrete ◽  
Limit State ◽  
Structural Response ◽  
High Strength ◽  
Steel Beams ◽  
Composite Joints ◽  
Building Structures ◽  
Initial Stiffness ◽  
End Plate

Within a paradigm of designing building structures for their end-of-life deconstruction, thispaper addresses flush end plate beam-to-column composite joints that may be dis-assembledand reused elsewhere. The joints consist of steel beams bolted to steel columns, and these aremade composite over the joint with precast concrete slabs attached to the top flange of thesteel beams with post-tensioned high strength bolted shear connectors installed in clearanceholes. Joints of this type experience partial shear connection, and accordingly their designneeds to incorporate this effect. Experimental work reported elsewhere by the authors showsthat a structural system of this type may indeed be deconstructed, even when loaded beyondthe serviceability limit state, and that the moment-rotation response is both robust andductile. A numerical modelling using ABAQUS software is introduced in the paper, and theresults of this are used identify the parameters most influential in the structural response,and to propose equations for the initial stiffness, moment capacity and rotation capacity of ajoint. These equations are consistent with the component-based representation of theEurocode 4 and draft Australian AS2327 composite structures standard.

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