Journal of South China University of Technology(Natural Science) >

2017 , Vol. 45 >Issue 12: 135 - 142

DOI: https://doi.org/10.3969/j.issn.1000-565X.2017.12.020

Architecture & Civil Engineering

Influence of Connection Behavior on Anti-Collapse Performance of Composite Frames

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  • 1.Postdoctoral Station of Civil Engineering,Chongqing University,Chongqing 400045,China; 2.Shaanxi Key Laboratory of Safety and Durability of Concrete Structures,Xijing University,Xi'an 710123,Shaanxi，China; 3.School of Civil Engineering,Harbin Institute of Technology,Harbin 150090,Heilongjiang,China
高山(1985-)，男，博士，副教授，主要从事钢与组合结构抗连续倒塌性能研究．

Received date: 2016-12-14

  Revised date: 2017-02-28

  Online published: 2017-10-31

Supported by

Supported by the National Natural Science Foundation of China(51408106)，the National Key Ｒ＆D Program of China (2016YFC0701203)，China Postdoctoral Science Foundation (2017M622965) and Chongqing Postdoctoral Special Foundation (Xm2017095)

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Abstract

The beam-column connection plays a key role in the redistribution of internal force,and its behavior has a significant influence on the performance of structures in resisting progressive collapse.In this paper,a finite ele- ment model is constructed for a three-storey steel-concrete composite frame,and the influence of the connection stiffness and strength on the anti-collapse behavior of the composite frame is analyzed by means of the dynamic-col- umn-removal method.The results show that (1) the influence of the connection stiffness and strength on the com- posite effect between the floors in a side span is greater than that on the catenary action in inner spans; (2) the development of the axial force in the beams depends on the connection stiffness,rather than the connection strength; (3) the change of the connection behavior has no influence on the load-carrying independence of each floor; and (4) the improvement in the connection behavior can reduce the demand for the boundary restraint con- dition during the redistribution of internal force.

Key words： composite structures; progressive collapse; dynamic analysis; beam-column connection; catenary action

Cite this article

GAO Shan GUO Lan-hui ZHANG Su-mei . Influence of Connection Behavior on Anti-Collapse Performance of Composite Frames[J]. Journal of South China University of Technology(Natural Science), 2017 , 45(12) : 135 -142 . DOI: 10.3969/j.issn.1000-565X.2017.12.020

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