Analytical model for the load-slip relationship of bearing-shear connectors

被引：1
作者：
Qin, Fengjiang [1 ]
Huang, Zhipeng [1 ]
Zheng, Zhichao [1 ]
Chou, Yaling [2 ]
Zou, Yang [3 ]
Di, Jin [1 ]
机构：
[1] Chongqing Univ, Sch Civil Engn, Key Lab New Technol Construction Cities Mt Area, Chongqing, Peoples R China
[2] Lanzhou Univ Technol, Mitigat Civil Engn, Key Lab Disaster Prevent, Lanzhou, Peoples R China
[3] Chongqing Jiaotong Univ, State Key Lab Mt Bridge & Tunnel Engn, Chongqing, Peoples R China
来源：
FRONTIERS IN MATERIALS | 2023年 / 10卷
基金：
中国国家自然科学基金;
关键词：
push-out test; numerical analysis; load-slip relationship; stiffness evolution; analytical model; COMPOSITE BEAM; STEEL; BEHAVIOR;
D O I：
10.3389/fmats.2023.1110232
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The shear behavior of shear connectors in steel-concrete composite structures mainly depends on its load-slip relationship. The load-slip relationship not only reflects the shear capacity and slip capacity of the shear connectors, but also the degradation of shear stiffness during loading. In this study, fifteen push-out tests were carried out to investigate the load-slip relationship of the novel bearing-shear (B-S) connectors, which consist of pressuring-bearing plates and shear plates. Based on push-out tests, the influence of the shape and height of the pressure-bearing plate, and the shear plate shape on the load-slip relationship of the B-S connectors was analyzed. Then, an effective finite element model, validated by push-out tests, was used to study the influence of the concrete strength, and the thickness and tensile strength of the shear plate on the load-slip relationship of B-S connectors. Finally, based on the push-out tests, numerical analysis and theoretical analysis, an analytical model expressing the load-slip relationship of the B-S connectors was proposed.
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页数：18
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