新型FRP橡胶支座受压性能研究  

Study on Compression Performance of an Innovate FRP Rubber Isolator

作　　者：张华[1] 彭天波[1] 

机构地区：[1]同济大学桥梁工程系,上海200092

出　　处：《结构工程师》2011年第4期91-97,共7页Structural Engineers

基　　金：国家自然科学资助项目(50708074)

摘　　要：FRP橡胶支座是用FRP复合材料板替代传统板式橡胶支座中的加劲钢板而制成的。已有的试验和理论分析表明FRP橡胶支座在满足一般板式橡胶支座力学性能要求的同时还具有较好的阻尼耗能能力,因此在减隔震设计中具有较好的应用前景。首先对FRP橡胶支座的概念及特点做了基本介绍,在此基础上利用通用有限元程序MSC.MARC对FRP橡胶支座的进行了有限元分析。为了考虑支座设计参数对FRP复合加劲板应力情况以及支座刚度的影响,对不同设计参数的FRP橡胶支座进行了竖向加载数值模拟,对加劲板中的最大应力和支座刚度进行了影响参数分析,初步提出了各设计参数对FRP橡胶支座受压力学性能的影响规律,为FRP橡胶支座的设计应用提供参考。Fiber reinforced plastic（FRP） rubber isolator is made by replacing the steel reinforcing elements of multilayer elastomeric isolation bearings by fiber reinforcement.Former experimental and theoretical researches have shown that FRP rubber isolator has equivalent performance in shear deformation capacity and vertical loading capacity,but has superior behavior in damping,so broad application prospects of FRP rubber isolator should be expected.This paper aims to study the effects of influential factors on the compression performance of FRP rubber isolator,including the stress in the reinforcement and the compression modulus of the isolator.The concept of the isolator is introduced first,and then numerical simulation is conducted to study the influence of the factors on the isolator.The influence laws of the factors are proposed,which provides references of the design of FRP rubber isolator.

关 键 词：FRP橡胶支座 影响参数 压缩性能 压缩刚度 

分 类 号：U443.36[建筑科学—桥梁与隧道工程]