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进行了偏心荷载作用下8层仓储隔震结构的弹塑性地震响应分析,选用考虑大变形硬化的橡胶隔震支座力学模型建立上部结构弹塑性隔震结构模型,对比了偏心结构与不偏心结构的地震响应。结果表明偏心荷载的存在会显著增大上部结构的地震响应。对于存在偏心荷载的隔震结构,隔震层产生了明显的扭转效应,且扭转效应会放大上部结构的地震响应。其次,考虑结构的偏心荷载后,相同的地震波作用下,结构整体的塑性耗能也明显增加。最后提出对于仓储建筑隔震结构应根据结构的实际用途进行结构设计,并在活荷载集中的区域加强抗震措施。
Elastic-plastic seismic response analysis of 8-storey seismic isolation structure under eccentric load was carried out. The mechanical model of rubber isolated bearing considering large deformation hardening was used to establish the elasto-plastic isolation structure model of the superstructure. The eccentric structure and non-eccentric structure Earthquake response. The results show that the existence of eccentric load can significantly increase the seismic response of the superstructure. For the isolated structure with eccentric load, the isolation layer has a significant torsional effect, and the torsional effect will amplify the seismic response of the superstructure. Secondly, considering the eccentric load of the structure, the plastic energy consumption of the whole structure obviously increases under the same seismic wave. Finally, the structural design of the isolated structure of warehousing buildings should be based on the actual use of the structure, and the seismic strengthening measures should be strengthened in the areas of concentrated live load.