高烈度区多层砌体结构基础隔震加固设计与研究  

Base isolation reinforcement design and research on the multi-rise masonry structure in high earthquake intensity zone

作　　者：李广洲 袁康[1,2] 郭军林[1,2] 王颖[1,2] 刘万义 Li Guang-zhou;Yuan Kang;Guo Jun-lin;Wang Ying;Liu Wan-yi(College of Hydraulic and Civil Engineering,Shihezi University,Shihezi 832000,China;Xinjiang Production&Construction Groups Engineering Laboratory for Seismic and Energy-Saving Building in High Earthquake Intensity and Cold Zone,Shihezi 832000,China;Xinjiang Research Institute of Building Sciences,Urumqi 830054,China)

机构地区：[1]石河子大学水利建筑工程学院,新疆石河子832000 [2]石河子大学新疆兵团高烈度寒区建筑抗震节能技术工程实验室,新疆石河子832000 [3]新疆建筑科学研究院(有限责任公司),新疆乌鲁木齐830054

出　　处：《工程抗震与加固改造》2021年第3期104-108,共5页Earthquake Resistant Engineering and Retrofitting

基　　金：国家自然科学基金地区科学基金项目(51968062)。

摘　　要：针对高烈度区低层砌体结构采用基础隔震技术加固设计进行了研究。采用《建筑抗震设计规范》附录L中的计算方法对砌体结构进行了基础隔震加固分析,对该结构行了叠层橡胶支座的布置与选型,研究了其隔震效果。结果表明,砌体结构采用基础隔震技术后能有效地降低上部结构的地震反应,大大提高了结构的安全性;多遇地震作用下,隔震结构水平向减震系数小于0.4,使上部结构地震作用降低50%左右,达到预期目标;罕遇地震作用下,隔震层位移、叠层橡胶支座极大面压和极小面压均满足规范要求。同时,为后续类似低层砌体结构加固工程提供了依据和参考。In this paper,the reinforcement design of multi-rise masonry structure in high earthquake intensity zone by base isolation was studied.Based on the calculation method in appendix L of code for seismic design of buildings,the base isolation reinforcement analysis of the multi-rise masonry structure was carried out.The results show that the seismic response of the superstructure can be effectively reduced and the safety of the structure greatly improved after the base isolation is adopted in the multi-rise masonry structure.Under the action of frequent earthquakes,the horizontal damping coefficient of the isolated structure is less than 0.4,which can reduce the seismic action of the superstructure by about 50%and achieves the expected target.Under the action of rare earthquake,the displacement of isolation layer and the maximum and minimum surface pressure of laminated rubber bearing meet the requirements of the specification.Meanwhile,it provides a basis and reference for the following reinforcement projects of similar multi-rise masonry structures.

关 键 词：基础隔震加固 多层砌体结构 叠层橡胶支座 水平向减震系数 高烈度区 

分 类 号：TU352.1[建筑科学—结构工程]