摘要
现行结构抗震设计采用基于强度的弹性设计方法,对结构的非弹性性能涉及较少。基于能量的性态设计方法可以同时考虑到力、位移、强震持时等因素的影响,能反映结构进入塑性后的破坏情况,是有发展潜力的抗震设计方法。基于滞回耗能谱与累积延性比谱,根据能量平衡关系,提出了远场地震下K型偏心支撑钢框架的性态设计方法,并设计了10层K型偏心支撑钢框架;采用Pushover方法验证了结构的屈服位移与屈服模式;结构弹塑性时程分析结果验证了设计方法的可信性。
The current seismic design method is an elastic design method mainly based on strength, winch considers little about the inelastic behavior of structure. The energy-based seismic design method can take force, displacement, duration etc. into account at the same time, and also evaluate the damage level when structure comes into plastic effectively, which is a tendency of the seismic design philosophy development. Based on the hysteretic energy spectra and accumulated ductility ratio spectrum, the paper proposes a performance-based seismic design method of K type steel eccentrically braced frames under the far field earthquake according to the energy balance equation, and then designs a K-type steel eccentrically braced frame of 10 story, verifies yield displacement and yield mode of structure by Pushover method, which proves reliability by time history analysis.
出处
《苏州科技学院学报（工程技术版）》
CAS
2016年第1期27-33,共7页
Journal of Suzhou University of Science and Technology （Engineering and Technology）
基金
国家自然科学基金项目(51278320)
关键词
性态抗震设计
偏心支撑钢框架
滞回能
PUSHOVER分析
弹塑性时程分析
performance-based seismic design
steel eccentrically braced frame
hysteretic energy
pushover analysis
time history analysis
