三类组合变刚度隔震核岛抗震性能对比研究  

Study on seismic performance of three types of combined variable stiffness isolation nuclear islands

作　　者：方超 孔德睿 魏陆顺 李春 李全华 Fang Chao;Kong De-rui;Wei Lu-shun;Li Chun;Li Quan-hua(School of Civil Engineering,Xinyang University,Xinyang 464000,China;Transportation and Civil Building College,Foshan University,Foshan 528000,China;Xinyang Architectural Survey,Design and Research Institute Co.Ltd,Xinyang 464000,China;Laboratory Fabricated Building of Xinyang City,Xinyang 464000,China)

机构地区：[1]信阳学院土木工程学院,河南信阳464000 [2]佛山科学技术学院交通与土木建筑学院,广东佛山528000 [3]信阳市建筑勘察设计研究院有限公司,河南信阳464000 [4]信阳市装配式建筑重点实验室,河南信阳464000

出　　处：《工程抗震与加固改造》2023年第1期24-31,共8页Earthquake Resistant Engineering and Retrofitting

基　　金：国家自然科学基金(51778162);河南省高等学校重点科研项目(22A560016);信阳学院校级科研项目(2021-XJLYB-008,2021-XJLYB-020)。

摘　　要：基于橡胶支座与滑板支座串联形成高弹性滑板支座(HESLB),协同铅芯橡胶支座(LRB)、橡胶支座(NRB)构成变刚度组合隔震系统应用于核岛结构。首先,结合不同支座力学特性对组合隔震系统力学性能参数进行分析;其次,基于单质点隔震模型给出不同运动状态下的动力方程;最后,针对目标核岛设计3种组合隔震方案并进行数值分析。结果表明:组合隔震方案均具备两阶段刚度特性,LRB+NRB+HESLB组合隔震方案可同时控制核岛加速度与位移响应,具备较好的耗能效果。Based on the rubber bearing and the sliding board bearing in series to form a high elastic sliding board bearing(HESLB),the lead rubber bearing(LRB)and rubber bearing(NRB)are combined to form a variable stiffness combined seismic isolation system and applied to the nuclear island structure.First,the mechanical performance parameters of the combined isolation system are analyzed based on the mechanical characteristics of different supports;secondly,the dynamic equations under different motion states are given based on the single-particle isolation model;Finally,three combined isolation schemes are designed and numerically analyzed for the target nuclear island.The results show that:the combined isolation schemes have two-stage stiffness characteristics,and the LRB+NRB+HESLB combined isolation scheme can control the acceleration and displacement response of the nuclear island at the same time,and has a good energy consumption effect.

关 键 词：隔震核岛 变刚度 组合隔震 地震响应 

分 类 号：TU317[建筑科学—结构工程]