V型偏心支撑钢框架结构抗震性能分析

Analysis on Anti-earthquake Performances of V Style Eccentric Braced Steel Frame

采用pushover方法对V型偏心支撑钢框架在三种罕遇地震烈度下的抗震性能进行分析,得出该结构在不同罕遇地震作用下的抗震模式及结构性能点,并对其抗震性能进行评定;该结构在地震作用下塑性铰依次出现于耗能梁段和框架梁上,耗散大量的地震能量,同时避免框架柱遭受破坏,满足强柱弱梁和规范要求。

The pushover method was applied to analyze the anti-earthquake performances of the V style eccentric braced steel frame under three kinds rare earthquake intensities,under the rare earthquake function the failure mode and performance point were obtained,and the structure has been assessed the anti-earthquake performances.Under the different earthquakes plasticity hinges appears from link beam to the beam,which can consume earthquake energy to protect the column being destroyed at the same time,satisfy the strong column and weak beam and specification requirements.