【摘要】 结合某3层冷弯薄壁型钢结构,对采用隔震橡胶支座结构与原有结构进行弹塑性时程分析,并将两种结构加速度响应、位移响应及层间位移进行对比分析。结果表明:(1)进行弹性分析时,隔震结构的加速度响应比原有结构峰值提高约1%~29.9%;(2)进行弹塑性分析时,隔震结构加速度响应小于原有结构,最大减少约50%,且不同楼层隔震效率有所不同;(3)进行弹性、弹塑性分析,隔震结构位移响应大于原有结构位移响应。更多还原

【Abstract】 Based on a three floors cold-formed steel structure,the elastic-plastic time history analysis is carried out for the structure with vibration isolation rubber bearings and the original structure. The acceleration response,displacement response and layer displacement of two structures are compared. The results showed that: in elastic analysis,the peak acceleration response of the isolated structure improves about 1% ~ 29. 9% than the original structure; in plastic analysis,the acceleration response of the isolated structure is less than the original structure,the maximum decrease is about 50%,and different isolation efficiencies depend on different floors; in elasticity and elastic-plastic analysis,the displacement response of isolated structure is larger than the original structure. So the isolation design should not be considered in cold-formed steel structure.更多还原