摘要
在RC剪力墙中(受拉钢筋应力较小位置)合理的开洞,并内嵌性能优良的防屈曲支撑(BRB),设计为新型轻质BRB耗能剪力墙。首先,采用OpenSEES软件分析了某BRB的抗震性能、并和试验结果比较,验证了BRB采用模型和分析方法的正确性,然后设计了不同洞口尺寸的BRB耗能剪力墙,并对其进行模拟低周反复荷载作用的有限元分析。依据承载力和延性的双指标确定了BRB耗能剪力墙合理的洞口尺寸,和实体剪力墙抗震性能比较,开洞合理的BRB耗能剪力墙具有更好的性能,其承载能力满足实体剪力墙的要求,而其延性、耗能等可提升50%左右,大大改善了剪力墙的抗震性能。
The opening with reasonable dimension was set in the RC shear wall where the stress of tension reinforcements was small, and buckling restrained braces （BRB） with good performance were embedded in the opening. Then a new type of lightweight energy dissipation shear wall with BRB was designed. Firstly, the software, OpenSEES, was used to analyze the seismic performance of one kind of BRB accurately, and the analysis results were compared with test results, which verified the accuracy of the model and method used to analyze BRB. Then the finite element analysis of the energy dissipation shear walls with BRB embedded in openings of different dimensions was carried out. The reasonable opening dimension was determined based on two indicators, namely, bearing capacity and ductility. Compared with solid shear walls, BRB energy dissipation shear walls with reasonable openings dimensions, whose bearing capacity is not less than the energy dissipation coefficient solid shear walls, have their ductility and energy dissipation performances enhanced by about 50 percent, and have better seismic performance.
作者
朱俊涛
毛超杰
王新玲
ZHU Juntao MAO Chaojie WANG Xinling(School of Civil Engineering,Zhengzhou University, Zhengzhou ,450001, China)
出处
《结构工程师》
北大核心
2017年第3期73-79,共7页
Structural Engineers
基金
河南省高等学校重点计划项目(15A560001)
河南省重点科技攻关项目(132102310277)
郑州市科技攻关计划项目(153PKJGG142)
