基于等效线性化的SISC隔震框架结构动力响应分析  

Analysis of the structural dynamic response of SISC isolation frame based on equivalent linearization

作　　者：张广泰[1] 陈畅 梁本帅 章金鹏 Zhang Guang-tai;Chen Chang;Liang Ben-shuai;Zhang Jin-peng(School of Architecture and Engineering,Xinjiang University,Urumqi 830047,China)

机构地区：[1]新疆大学建筑工程学院,新疆乌鲁木齐830047

出　　处：《工程抗震与加固改造》2024年第1期1-8,27,共9页Earthquake Resistant Engineering and Retrofitting

基　　金：新疆维吾尔自治区自然科学基金重点项目(XJEDU2021D01D07)。

摘　　要：为探究采用废旧轮胎隔震垫(STP)制成的柱下新型隔震装置(SISC)在村镇框架结构中的隔震效果,通过SAP2000建立隔震与非隔震三层框架结构模型,利用简化计算方法进行初步布置,采用反应谱法及时程分析法对比了隔震前后层间剪力比,并进行了上部结构的动力响应分析。结果表明:简化计算方法、振型分解反应谱法及时程分析法得到的底部剪力比分别为0.4207、0.4091、0.4491;隔震结构较非隔震结构自振周期延长2~3倍,由时程分析法可得隔震结构中上部结构层间位移角、顶层加速度较非隔震结构最大分别降低86.48%、49.26%,均满足规范限值要求,上部结构整体呈现平动;SISC隔震框架结构按照简化计算方法进行SISC初步布置具有可行性,该研究成果为STP隔震体系在村镇框架结构中的实际应用提供参考。This research aims to investigate the selection technique of a new seismic isolation device under column(SISC)made of scrap tire isolation pads(STP)in the frame structure of a rural building.The model of isolated and non-isolated three-story frame structure was established by software SAP2000,and the simplified calculation method was used for the preliminary layout.The response spectrum and time history analysis methods were used to compare the shear ratio between the layers before and after isolation,and the dynamic response of the superstructure was analyzed.The results show that the bottom shear ratios obtained by simplified calculation,mode response spectrum,and history analysis methods are 0.4207,0.4091,and 0.4491.The natural vibration period of the isolated structure is 2~3 times longer than the non-isolated structure.According to the time-history analysis method,the inter-story drift ratio and top layer acceleration of the superstructure in the isolated structure are 86.48%and 49.26%lower than the non-isolated structure,which meets the limit requirements of the specification.The overall superstructure presents translational motion in the isolation structure.SISC isolation frame structure according to the simplified calculation method of SISC preliminary layout is feasible,and the research results provide a reference for the practical application of STP isolation system in village buildings.

关 键 词：STP 柱下新型隔震装置 框架结构 等效线性化 动力响应 

分 类 号：TU352.12[建筑科学—结构工程]