【摘要】 以某在役选煤厂主厂房屋盖的固定铰支座网架结构为研究对象,采用3D3S分析软件分析了组合荷载对网架结构抗震性能的影响.结果表明:两区网架结构动力特性相似,各网架结构的自振频率密集,结构的低阶整体振型以竖向振型为主,结构整体性强,局部振动不明显;在7度多遇地震作用下,结构的组合荷载作用的内力和位移响应属于同一量级,结构安全稳定性符合规范要求.更多还原

【Abstract】 Existing pin-support space truss structures on the roof of main workshop of a coal preparation plant are regarded as research objects.Influence of combined loads on the earthquake response of space truss structure is analyzed by using the software 3D3S.The analysis results show that two parts of space truss structures are similar in dynamic property,frequencies of each space truss structure are dense and the first mode is almost in the vertical direction,structural integrity is strong and local vibration is not obvious;In the 7 seismic fortification intensity areas,the displacement and inner force responses of each structure under combined loads are close,the safety and stability properties of each structure are in line with the national regulation.更多还原