Structural Behavior of Composite Beams Considering the Bond-Slip Effect

2010 ◽  
Author(s):  
H.G. Kwak ◽  
J.W. Hwang
Keyword(s):  
Composite Beams ◽  
Structural Behavior ◽  
Slip Effect ◽  
Bond Slip

Nonlinear Finite Element Analysis of FRP Strengthened RC Beams with Bond-Slip Effect

2017 ◽  
Vol 14 (03) ◽  
pp. 1750032 ◽  
Author(s):  
Prabin Pathak ◽  
Y. X. Zhang ◽  
Xiaodan Teng
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Element Model ◽  
Structural Behavior ◽  
Slip Effect ◽  
Rc Beams ◽  
Element Analysis ◽  
Bond Slip ◽  
Research Findings ◽  
Parametric Studies

This paper investigates the structural behavior of fiber reinforced polymer (FRP) strengthened reinforced concrete (RC) beams by developing a new simple, efficient and accurate finite element model (FEM-B). In addition to the FRP, concrete and steel rebars, the adhesive and stirrups which have been generally ignored in the reported models from literatures are considered in the new models. At first, a finite element model (FEM-P) is developed assuming perfect bond between concrete, FRP and adhesive interfaces. Then the FEM-P model is expanded to form the FEM-B model by including the bond-slip effect between concrete, FRP and adhesive interfaces. The developed new finite element models (FEM-B and FEM-P) are validated against experimental results and demonstrate to be effective for the structural analysis of FRP strengthened RC beams. Furthermore, parametric studies are carried out to learn the effects of types and thickness of FRP on the structural behavior of FRP strengthened RC beams based on the FEM-B model. The research findings are summarized finally.

Optimization Design of Steel-Concrete Composite Beams Considering Bond-Slip Effect

2011 ◽  
Vol 243-249 ◽  
pp. 379-382 ◽  
Author(s):  
Shan Suo Zheng ◽  
Huan Juan Lou ◽  
Lei Li ◽  
Zhi Qiang Li ◽  
Wei Wang
Keyword(s):  
Composite Beam ◽  
Optimization Design ◽  
Experimental Studies ◽  
Composite Beams ◽  
Slip Effect ◽  
Bond Slip ◽  
Stiffness Reduction ◽  
Design Variables ◽  
Optimization Methodology ◽  
The Cost

The optimization methodology of the steel-concrete composite beam was proposed in this paper. The objective function is the cost of the composite beams, and the design variables are the geometry parameters, including height and width of the concrete deck, as well as thickness of the steel flange and web. The constraint conditions are main requirements stated in Chinese code for the design of composite beam, reasonable calculating theories and indispensable constructions, as well as some mature and consistent conclusions confirmed by experimental studies. Stiffness reduction coefficient is used to consider the effect of bond-slip effect between concrete and steel when calculating the beam deformation. The optimization for composite beam under uniform loads is given as a demonstration example finally. The methodology proposed in this paper should be useful for obtaining the solution of this kind of optimization problem.

scholarly journals Analysis of Bearing Capacity of Steel-Concrete Composite Beams Considering Interface Slip Effect

2021 ◽  
Vol 719 (2) ◽  
pp. 022036
Author(s):  
Song Yang ◽  
Fan Chen ◽  
Zubin Ai ◽  
Lingyuan Zhou ◽  
Zhensheng Cao
Keyword(s):  
Bearing Capacity ◽  
Composite Beams ◽  
Slip Effect ◽  
Interface Slip

scholarly journals Structural Behavior of Reinforced Self-Compacted Engineered Cementitious Composite Beams

2016 ◽  
Vol 2016 ◽  
pp. 1-12 ◽  
Author(s):  
Bashar S. Mohammed ◽  
M. F. Nuruddin ◽  
Muhammad Aswin ◽  
Nursyuhada Mahamood ◽  
Hashem Al-Mattarneh
Keyword(s):  
Reinforced Concrete ◽  
Large Scale ◽  
Concrete Beam ◽  
Failure Modes ◽  
Reinforced Concrete Beam ◽  
Composite Beams ◽  
Experimental Results ◽  
Structural Behavior ◽  
Cementitious Composite ◽  
Engineered Cementitious Composite

Eight large-scale reinforced self-compacted engineered cementitious composite (R-SC-ECC) beams with different steel reinforcement ratios have been designed, prepared, cast, cured, and tested to failure at the age of 28 days. The experimental results have been compared with theoretical values predicted using EC2, RILEM, and VecTor2 models. Results show that failure modes in flexure and shear of R-SC-ECC beams are comparable to that of normal reinforced concrete beam. Nevertheless, contrary to VecTor2, models of EC2 and RILEM are not suitable for predicting reasonable ultimate moments for the beams, while results using VecTor2 model have successfully predicted the failure modes and load-deflection curves for all R-SC-ECC beams. It has been concluded that R-SC-ECC fall in the category of ductility class medium to high which gives advantages of using R-SC-ECC beams in regions susceptible to seismic activities.

scholarly journals Experimental analysis of the structural behavior of different types of shear connectors in steel-concrete composite beams

2020 ◽  
Vol 13 (6) ◽  
Author(s):  
Juliano Geraldo Ribeiro Neto ◽  
Gregório Sandro Vieira ◽  
Rogers de Oliveira Zoccoli
Keyword(s):  
Bending Moment ◽  
Experimental Tests ◽  
Composite Beams ◽  
Structural Behavior ◽  
Steel Beams ◽  
Shear Connectors ◽  
Reinforced Concrete Slabs ◽  
Different Types ◽  
Composite Section ◽  
Hot Rolled

ABSTRACT: The present work aims to compare the structural behavior of steel-concrete composite-section beams for three types of shear connectors made of U hot rolled section and cold-formed sections of U and L. Experimental tests were performed with the three types of connectors associated with I section laminated steel beams and reinforced concrete slabs. For each type of connector, three push-out tests were performed, as well as six simple supported beam tests to evaluate the positive bending moment region. The results indicated that the direct shear behavior among the different types of connectors presents significant differences, however they do not significantly influence the average flexural strength of the composite beams. These, however, present considerable differences in deflections and deformations due to the stiffness differences of the connectors.

Slipping Effects of Simple Combination Beam under the Action of Negative Bending Moment

2011 ◽  
Vol 243-249 ◽  
pp. 1117-1121
Author(s):  
Xu Hong Zhang ◽  
He Wu ◽  
Jian Ping Cao
Keyword(s):  
Numerical Study ◽  
Bending Moment ◽  
Composite Beams ◽  
Slip Effect ◽  
Finite Element Program ◽  
Shear Connection ◽  
Distribution Rules ◽  
Element Program ◽  
Negative Bending ◽  
Simple Combination

A numerical study on slip effect of simply supported composite beams under negative bending moment is conducted by means of finite element program of ANSYS based on the feasibility verification of ANSYS. The research contents include: slip distribution rules; slip effect on deflection in service stage and ultimate bearing capacity; relationship between slip effect and shear connection、lognitudinal percentage of reinforcement and working behavior of composite beams with partial shear connection under negative bending moment .

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