某教学楼结构隔震设计及分析  

Seismic Isolation Design and Analysis of a Teaching Building

作　　者：张强 ZHANG Qiang(Gansu Institute of Architectural Design and Research Co.,Ltd.,Lanzhou,Gansu,730000,China)

机构地区：[1]甘肃省建筑设计研究院有限公司,甘肃兰州730000

出　　处：《建材技术与应用》2022年第4期62-66,共5页Research and Application of Building Materials

摘　　要：以某教学楼结构设计为例,采用基础隔震技术,在上部结构与基础之间设置由橡胶支座和阻尼器组成的隔震层,以改变结构体系振动特性。采用分部计算方法,通过ETABS软件Rubber Isolator+gap单元模拟隔震支座,进行隔震分析。计算结果表明:结构采用基础隔震后,结构地震响应明显降低,隔震后上部结构水平地震作用可降低1度;罕遇地震作用下支座拉应力最大值<1.0 MPa,说明结构质心和刚心相距较小,没有发生倾覆的趋势;支座压应力最大值为14 MPa,远<30 MPa,该工程的隔震支座布置合理,安全性较好。Taking the structural design of a teaching building as an example,the isolation layer composed of rubber bearings and dampers was set between the superstructure and the foundation using the foundation isolation technology,so as to change the vibration characteristics of the structural system.Rubber Isolator+GAP element of ETABS software was used to simulate the isolation bearings by partial calculation method.The results show that the seismic response of the structure decreases obviously after the foundation isolation,and the horizontal seismic action of the superstructure decreases by 1 degree after the isolation.In rare earthquake,the maximum tensile stress of the support is less than 1.0 MPa,indicating that the distance between the center of mass and the center of stiffness of the structure is small,and there is no overturning trend.The maximum compressive stress of the bearing is 14 MPa,far less than 30 MPa.The isolation bearing of the project is arranged reasonably and has good safety.

关 键 词：基础隔震 隔震支座 分部计算 

分 类 号：TU352.12[建筑科学—结构工程]