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Anti-Seismic Analysis of Buckling Restraining Brace Supported RC Frames for Building Reconstruction with Storey-adding
Author(s): 
Pages: 77-80
Year: Issue:  4
Journal: Journal of Gansu Sciences

Keyword:  屈曲约束支撑加层层间位移角时程分析;
Abstract: 结合工程实例,对加层后抗侧刚度不足的钢筋混凝土框架结构,采用布置屈曲约束支撑的办法来满足结构弹性位移角限值的设计要求.首先运用ANSYS软件输入地震波对加层结构进行动力时程分析,然后对不满足规范要求的层间位移角限值的楼层布置屈曲约束支撑,再对加支撑结构进行多遇和罕遇地震下的抗震验算.结果表明,布置屈曲约束支撑后,加层结构的层间位移角均能满足规范的要求,最大减幅可达27.5%;罕遇作用下屈曲约束支撑在大部分时间屈服从而达到应力屈服强度(108 Pa),具有良好的耗能减震性能.
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