Simplicity of Seismic Force Reduction Factor for Seismic Design of Braced Frames

摘要：

The Japanese seismic design code adopts a factor Ds for chevron-braced frames to consider the seismic force reduction due to the ductility. The Ds value varies from 0.25 to 0.5 according to the type of backup frame, the slenderness ratio of braces λ and the participation ratio β of braces. The selection of Ds in the design process is deemed rather complex. This study examines the ductility of some representative multi-story braced frames designed with different Ds, λ and β, and finds that the braced frames have a smaller deformation than the pure moment frames with the same Ds value. It is possible to use a unique value of Ds for braced frames.

关键词： Equivalent single-degree-of-freedom model Braced frame Seismic force reduction factor Pure momentframes

作者: Yurong Li Kangfeng Cai

作者单位: Department of Civil Engineering, Anhui University of Science and Technology, Huainan, China, 232001

会议类型: 国际会议

会议名称: The First Anniversary of Wenchuan Earthquake(纪念汶川地震一周年国际学术会议)

会议地点: 成都

会议语种:英文

页码: 370-375

在线出版日期: 2009-05-10（万方平台首次上网日期，不代表论文的发表时间）