平西府车辆段与综合基地(运用库)高位隔震设计分析
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摘要
基于高位隔震结构的动力特性及影响高位隔震结构隔震效果的主要参数——频率比、质量比,介绍了地震波的选取及输入方式和高位隔震结构隔震层、隔震层以上结构、隔震层以下结构的抗震性能目标,以及振型分解反应谱法中隔震支座等效刚度的计算方法。采用ETABS软件对高位隔震结构进行计算分析,采用ETABS中Link单元模拟隔震支座,进行了非线性时程法及振型分解反应谱法分析,同时采用了PKPM等效剪切刚度的计算方法。经过分析,高位隔震结构隔震层以上结构可按降低一度进行设计,隔震层、隔震层以下结构能够达到预期抗震设防目标,并验证了PKPM简化计算方法的可行性。
The high-position seismic-isolated structure characteristic and the main parameters:frequency ratio and mass ratios are discussed which effect the isolated structure.The design method is introduced,such as the selection of the earthquake wave and its input methods,the anti-seismic aims of the isolation layer of structure and the structure above/below the layer,the rubber bearings equivalent stiffness calculation for response spectrum method.The high-position seismic-isolation structure was analyzed by ETABS program,in which simulates rubber bearings by unit Link,and was studied by the nonlinear time-history method and response spectrum method,and the equivalent shear stiffness of PKPM calculation method was also used.The structure above the isolation layer of the high-position seismic-isolation structure can reduce one degree to design.The isolation layer and the below structure can meet the expected anti-seismic goals.The correctness of the simplified calculation method of PKPM software is veified.
The high-position seismic-isolated structure characteristic and the main parameters:frequency ratio and mass ratios are discussed which effect the isolated structure.The design method is introduced,such as the selection of the earthquake wave and its input methods,the anti-seismic aims of the isolation layer of structure and the structure above/below the layer,the rubber bearings equivalent stiffness calculation for response spectrum method.The high-position seismic-isolation structure was analyzed by ETABS program,in which simulates rubber bearings by unit Link,and was studied by the nonlinear time-history method and response spectrum method,and the equivalent shear stiffness of PKPM calculation method was also used.The structure above the isolation layer of the high-position seismic-isolation structure can reduce one degree to design.The isolation layer and the below structure can meet the expected anti-seismic goals.The correctness of the simplified calculation method of PKPM software is veified.
引文
[1]崔京浩,党育,杜永峰,等.基础隔震结构设计及施工指南[M].北京:中国水利水电出版社,2007.
[2]ANIL K CHOPRA.结构动力学理论及其在地震工程中的应用[M].谢礼立,吕大刚,等译.北京:高等教育出版社,2005.
[3]GB50011—2001建筑抗震设计规范[S].北京:中国建筑工业出版社,2001.
[4]黄襄云.层间隔震减震理论分析和振动台试验研究[D].西安:西安建筑科技大学,2008.
[5]祁凯.层间隔震结构工作机理研究[J].地震工程与工程振动,2006,26(4):239-243.
[6]周福霖.工程结构减震控制[M].北京:地震出版社,1997.
[7]徐忠根,周福霖.底部两层框架上部多塔楼底层隔震数值模拟与试验研究[J].地震工程与工程振动,2005,25(1):126-132.
[2]ANIL K CHOPRA.结构动力学理论及其在地震工程中的应用[M].谢礼立,吕大刚,等译.北京:高等教育出版社,2005.
[3]GB50011—2001建筑抗震设计规范[S].北京:中国建筑工业出版社,2001.
[4]黄襄云.层间隔震减震理论分析和振动台试验研究[D].西安:西安建筑科技大学,2008.
[5]祁凯.层间隔震结构工作机理研究[J].地震工程与工程振动,2006,26(4):239-243.
[6]周福霖.工程结构减震控制[M].北京:地震出版社,1997.
[7]徐忠根,周福霖.底部两层框架上部多塔楼底层隔震数值模拟与试验研究[J].地震工程与工程振动,2005,25(1):126-132.
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