考虑下部支承的空间双层柱面网壳强震响应规律及隔震研究  

Study on strong earthquake response and seismic isolation of space double layer cylindrical shell with lower supporting structure

作　　者：李辉[1] 聂桂波[2] 朱兴龙 LI Hui;NIE Guibo;ZHU Xinglong(Sichuan Academy of Architectural Sciences,Chengdu 610081,China;Key Laboratory of Earthquake Engineering and Engineering Vibration,Institute of Engineering Mechanics,China Earthquake Administration,Harbin 150080,China)

机构地区：[1]四川省建筑科学研究院,四川成都610081 [2]中国地震局工程力学研究所,中国地震局地震工程与工程振动重点实验室,黑龙江哈尔滨150080

出　　处：《地震工程与工程振动》2019年第5期214-222,共9页Earthquake Engineering and Engineering Dynamics

基　　金：国家自然科学基金面上项目(51678544);黑龙江省自然科学基金项目(E2016071)~~

摘　　要：空间双层柱面网壳结构在实际工程中多用做屋顶结构,因此当地震发生时,网壳结构并不直接承受地震动作用,而是与下部支承结构共同承担。以往的研究通常将下部支承结构简化,导致对包含下部支承的整体结构强震响应规律缺乏足够认识。本文基于有限元软件ABAQUS对考虑下部支承的空间双层柱面网壳结构强震响应行为进行了大规模参数化分析,考察了不同的上部网壳结构参数对结构抗震性能的影响特点和规律。与此同时分析结果表明下部支承结构的动力放大效应是导致结构破坏的重要原因;不同的上部柱面网壳参数对结构强震响应具有明显的规律性。将新型三维隔震支座应用于不同参数结构中,总结了新型三维隔震支座在不同结构中的隔震特点和规律。结果表明,新型三维隔震支座在不同的空间柱面网壳结构中均具有普遍的隔震效果。Space double-layer cylindrical shell is often used as roof structure in practical steel engineering.Therefore,when an earthquake occurs,the shell structure does not directly subjected to the seismic action during an earthquake event,but jointly bears the seismic action with the lower supporting structure.Previous studies usually simplify the lower supporting structure,resulting in insufficient understanding of the strong earthquake response law of the whole structure including the lower supporting structure.Based on the finite element software ABAQUS,the large-scale parametric analysis of strong earthquake response of space double-layer cylindrical reticulated shells with lower support is carried out in this paper.The influence of different upper reticulated shell structural parameters on the seismic performance of the structure is investigated.At the same time,the analysis results show that the dynamic amplification effect of the lower supporting structure is the important reasons leading to structural damage.Different parameters of upper cylindrical reticulated shells have obvious regularity for strong earthquake response of structures.The new three-dimensional isolation bearings are applied to different structures,and the isolation characteristics and rules of the new bearings in different structures are summarized.The results show that the new three-dimensional isolation bearings have universal isolation effect in different space double-layer cylindrical shell structures.

关 键 词：空间双层柱面网壳结构 下部支承 参数分析 隔震支座 隔震效果 

分 类 号：P31[天文地球—固体地球物理学]