摘要
钢筋混凝土RC框架基于位移的抗震设计需要解决三个问题:确定大震作用下框架的层间位移角要求;框架的弹塑性层间位移与梁、柱、节点区变形之间的关系;通过量化的抗震构造措施实现梁、柱的变形能力。本文用特征延性谱法确定规则RC框架的层间位移角要求;通过框架节的侧移解构规则,建立了弹塑性状态下框架层间位移与构件变形的关系;建立了柱的目标侧移角与轴压比和配箍特征值、梁的目标侧移角与配箍特征值的关系。通过算例,介绍了采用本文方法进行RC规则框架设计的过程:并用弹塑性时程分析验证了本文方法的可行性。
The displacement-based seismic design (DBSD) for RC frames is studied in the paper. Their three problems must be solved to perform the DBSD for RC frames; it is discussed in details. A characteristic ductility spectrum is proposed to determine the demand of story drift for regular frames. Based on the decomposition rule of sideway, the relationships between the story drift and the deformation of elements are determined. A case study applied DBSD method for regular RC frames is included.
出处
《土木工程学报》
EI
CSCD
北大核心
2003年第5期22-29,共8页
China Civil Engineering Journal
关键词
钢筋混凝土
框架
位移
抗震设计
侧移解构规则
RC frame,displacement-based seismic design , characteristic ductility spectrum ,decomposition rule of sideway, earthquake resistant constructional measure
