隔震结构特性测试研究
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摘要
福建省防震减灾指挥中心隔震层采用中国生产的低硬度橡胶隔震支座,测试了该隔震楼在环境振动和隔震层发生初位移时结构的动力特性,得到了结构的前3阶频率、振型和阻尼比,并测得隔震层在小变形时的滞回性能和加速度响应,结果表明,隔震结构的卓越周期比传统结构长,结构振型的阻尼比较大。
Lower rigidity rubber supports are employed for the isolation layers of the Fujian province anti-earthquake control center building. The dynamic chayacteristics of this building are measured under environmental vibration and with initial displacements of its isolation layers. Its first three natural frequencies, modal shapes and modal damping ratios are obtained. Its hysteresis loop property and acceleration response are also measured in the condition of small deformation of the isolation layers. The test results show that the first natural period of this vibration isolation building is longer and the corresponding damping ratio higher than those of traditional buildings.
Lower rigidity rubber supports are employed for the isolation layers of the Fujian province anti-earthquake control center building. The dynamic chayacteristics of this building are measured under environmental vibration and with initial displacements of its isolation layers. Its first three natural frequencies, modal shapes and modal damping ratios are obtained. Its hysteresis loop property and acceleration response are also measured in the condition of small deformation of the isolation layers. The test results show that the first natural period of this vibration isolation building is longer and the corresponding damping ratio higher than those of traditional buildings.
引文
[1]魏陆顺,周福霖等.广州大学城应用组合基础隔震技术[J].建筑工程,2005.2.
[2]周福霖.工程结构减震控制[M],北京:地震出版社,2006.
[3]日本建筑学会,刘文光译.隔震结构设计[M],北京:地震出版社,2006.
[4]夏昌,黄滨.防震减灾指挥大楼示范隔震技术[J].建筑工程,2005.2.
[5]黄向荣.隔震技术在防震减灾中心大楼应用[J].福建地震,2004.6.
[6]ISO22762,Elastomeric seismic-protection isolators.2005.
[2]周福霖.工程结构减震控制[M],北京:地震出版社,2006.
[3]日本建筑学会,刘文光译.隔震结构设计[M],北京:地震出版社,2006.
[4]夏昌,黄滨.防震减灾指挥大楼示范隔震技术[J].建筑工程,2005.2.
[5]黄向荣.隔震技术在防震减灾中心大楼应用[J].福建地震,2004.6.
[6]ISO22762,Elastomeric seismic-protection isolators.2005.
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