A new methodology for energy-based seismic design of steel moment frames
A new methodology for energy-based seismic design of steel moment frames作者机构:Michael Baker International Hamilton NJ 08619 USA Department of Civil and Environmental Engineering Syracuse University Syracuse NY 13244-1240 USA
出 版 物:《Earthquake Engineering and Engineering Vibration》 (地震工程与工程振动(英文刊))
年 卷 期:2017年第16卷第1期
页 面:131-152页
核心收录:
学科分类:081405[工学-防灾减灾工程及防护工程] 08[工学] 0818[工学-地质资源与地质工程] 081402[工学-结构工程] 0815[工学-水利工程] 081304[工学-建筑技术科学] 0813[工学-建筑学] 0802[工学-机械工程] 0814[工学-土木工程] 0801[工学-力学(可授工学、理学学位)]
主 题:energy-based seismic design hysteretic energy distribution MDOF systems steel moment frames story-wise optimization design
摘 要:A procedure is proposed whereby input and hysteretic energy spectra developed for single-degree-of-freedom (SDOF) systems are applied to multi-degree-of-freedom (MDOF) steel moment resisting frames. The proposed procedure is verified using four frames, viz., frame with three-, five-, seven- and nine-stories, each of which is subjected to the fault- normal and fault-parallel components of three actual earthquakes. A very good estimate for the three- and five-story frames, and a reasonably acceptable estimate for the seven-, and nine-story frames, have been obtained. A method for distributing the hysteretic energy over the frame height is also proposed. This distribution scheme allows for the determination of the energy demand component of a proposed energy-based seismic design (EBSD) procedure for each story. To address the capacity component of EBSD, a story-wise optimization design procedure is developed by utilizing the energy dissipating capacity from plastic hinge formation/rotation for these moment frames. The proposed EBSD procedure is demonstrated in the design of a three-story one-bay steel moment frame.