张弦梁结构中应用摩擦摆支座的数值模拟分析  

Numerical simulation of friction pendulum bearing in beam string structure

作　　者：王文渊 Wang Wenyuan(Lanzhou Urban Construction Design and Research Institute Co.,Ltd.,Lanzhou Gansu 730050,China)

机构地区：[1]兰州城市建设设计研究院有限公司,甘肃兰州730050

出　　处：《山西建筑》2024年第6期56-60,共5页Shanxi Architecture

摘　　要：在分析了张弦梁结构的自身结构特性后,提出采用摩擦摆柱顶隔震的方法作为该类结构的隔震措施。从理论上研究了张弦梁结构采用摩擦摆隔震的工作机理,并在Abaqus中进行实体建模对比分析了张弦梁结构在隔震与非隔震情况下在大震、中震及小震下的动力反应。结果表明:1)通过设置摩擦摆隔震支座,辐射式张弦梁结构的节点加速度响应得到了有效的控制。2)通过设置摩擦摆隔震支座,辐射式张弦梁结构的杆件动内力得到有效控制,不同部位的杆件控制效果有所差异,上弦杆的内力依然较大,建议在结构设计时对上弦杆适当增加截面尺寸或采用高标号钢材,以保证结构在多遇地震的作用下各个构件均处于弹性工作状态。3)通过设置摩擦摆隔震支座,支撑柱的柱脚反力有所减小,起到了对支撑柱的保护作用。In the analysis of the beam string structure of its structure and characteristics,puts forward a method of friction pendulum isolation as the seismic isolation measures.Theoretically study the beam string structure of the working mechanism of friction pendulum,and modeling for comparing the beam string structure in isolated and non isolated cases in the earthquake in Abaqus the dynamic response,the moderate and small earthquake loading.The results showed that:by setting the friction pendulum bearings,radial beam string structure node acceleration response of the structure has been effectively controlled.By setting the friction pendulum bearing,radial beam string structure member dynamic force is effectively controlled,different parts the rod control effect is different,the internal force of upper chord is still large,suggested in the design of structure appropriate to appropriately increase the section size of top chord or using high-grade steel,in order to ensure the structure in the earthquake under the earthquake action of each component are in elastic state.By setting the friction pendulum bearings,supporting column column reaction force decreased,and plays an important role in protection of the supporting column.

关 键 词：摩擦摆隔震支座 张弦梁结构 地震响应 

分 类 号：TU352.1[建筑科学—结构工程]