Direct design method for damped structure based on seismic capacity margin.Ⅱ:Application
A direct design method of reinforced concrete(RC)structures with passive energy dissipation devices(EDDs),which takes the seismic capacity margin(SCMR)as design target,and is featured by not only practicability but also general applicability for various EDDs,is proposed in the companion paper.In this paper,the design method which proposed in part I was applied to a 12-story reinforced concrete frame to illustrate the design procedure.Two earthquake levels(frequent and rare earthquakes)and two structural performance limits(member yielding and safety limits)were considered in the design.To verify the proposed design method,pushover and increment dynamic analysis(IDA)results from the frame without metal yielding dampers(MYDs)(S0)and two frames equipped with MYDs(S1o and S1s)are compared.Comparison of the pushover analysis results shows high estimation accuracy of the proposed design method in estimating change rates of the structural performance indicators from S0 to S1,accordingly the SCMR.Meanwhile,comparison of the IDA results indicates that due to the supplemental MYDs,S1o and S1s achieve higher seismic capacity margin thus their seismic responses are less likely to exceed the metal yielding and safety limits.In addition,average increment ratio of seismic capacity margin is found to be at the same level as the target increment ratio of SCMR.These comparisons show good accuracy of the proposed method in performance evaluation on the illustrate frame before and after equipped with MYDs,and verify effectiveness of the method in performance-based design of the RC structures with passive EDDs.
direct design method seismic capacity margin ratio metal yielding dampers pushover analysis increment dynamic analysis
Wei Liu Linfei Hao Ping Tan Ruifu Zhang
Earthquake Engineering Research & Test Center,Guangzhou University,Guangzhou,China Research Institute of Structural Engineering & Disaster Reduction,Tongji University,Shanghai,China
国际会议
The 7th World Conference on Structural Control and Monitoring(7WCSCM)(第七届结构控制与监测世界大会)
青岛
英文
3000-3008
2018-07-22（万方平台首次上网日期，不代表论文的发表时间）