摘要
采用力-位移混合控制方法,提出了考虑倾覆力矩的子结构混合模拟试验方法。采用ANSYS有限元软件,进行了不同的加载分布方式、试验子结构刚度发生变化、不同梁柱线刚度比以及不同结构层数等情况下的数值模拟,初步验证所提方法的可行性。以6层钢框架模型为例,实现了考虑倾覆力矩情况下的子结构混合模拟试验。试验结果表明:不考虑界面倾覆力矩,将改变结构在地震作用下的内力分布和破坏模式,不能真实地反映结构在地震作用下的力学性能。
The substructure hybrid simulation testing method considering overturning moment by means of the axial deformation predicting technique and the force-displacement mixed control method was proposed. Using the ANSYS finite element software, the numerical simulation results considering different loading distributions, different experimental substructure stiffness, different beam-column linear stiffness ratios and different numbers of structural stories showed that the feasibility of the proposed method was validated preliminarily. After that, taking the six-story steel frame model as an example, the proposed hybrid simulation testing method was realized. The results of the steel model substructure hybrid simulation test show that the substructure hybrid simulation testing method without considering the overturning moment, which changes the structural intemal force distribution and failure mode under earthquake, can not fairly reflect the mechanical properties under seismic action.
出处
《建筑结构学报》
EI
CAS
CSCD
北大核心
2016年第9期99-107,共9页
Journal of Building Structures
基金
国家自然科学基金重大研究计划集成项目(91315301)
国家自然科学基金国际合作项目(51161120360)
国家自然科学基金项目(51678199)
江苏省结构工程重点实验室资助课题(ZD1301)
关键词
子结构
倾覆力矩
力-位移混合控制
混合模拟
试验方法
地震响应
substructure
overturning moment
force-displacement mixed control
hybrid simulation
testing method
seismic response
