Cyclic behavior and analytical model of RC frame with infill slit shear walls

被引：0
|
作者：
Xiao K. [1 ,2 ]
Zhang Q.-L. [2 ]
机构：
[1] Shanghai Institute of Architectural Design & Research, Shanghai
[2] College of Civil Engineering, Tongji University, Shanghai
来源：
| 1600年 / Nanjing University of Aeronautics an Astronautics卷 / 29期
关键词：
Constitutive model; Cyclic; Fiber section model; Slit shear wall; UMAT;
D O I：
10.16385/j.cnki.issn.1004-4523.2016.06.021
中图分类号：
学科分类号：
摘要：
Cyclic behavior of a structural system consisting of reinforced concrete frame with infill slit shear walls (RCFW) is studied in this paper. Pseudo-static tests were performed with two one-bay, two-story RCFW specimens built at one-half scale. A fiber section analytical model with rigid arm elements is proposed for this system to research the nonlinear structural behavior under cyclic loadings. Based on the user subroutine interface UMAT provided by the ABAQUS program, a set of uniaxial hysteresis constitutive models for concrete and steel reinforcement is developed, which can directly describe the resilience characteristics of a component from material constitutive models. It is proved correct and applicable of the proposed model through comparing with the experimental results of RCFW specimens under the cyclic loadings. the stiffness and strength degradation and pinch phenomenon can be well described in the calculated load-displacement curves of the RCFW structure under repeated loadings. Besides, the presented analytical model incorporating developed UMAT is efficient and numerically stable, which can be used for elastoplastic analysis of the RCFW structure and for assessment of seismic demand. © 2016, Nanjing Univ. of Aeronautics an Astronautics. All right reserved.
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页码：1108 / 1118
页数：10
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