广东科学中心E区结构模型振动台试验与动力特性分析
|
摘要
为了研究广东科学中心E区的抗震性能,提高结构的抗震安全性,有效保护结构室内设备、仪器和展品的安全,采用了1∶35的比例制作缩尺模型,对该模型进行了模拟地震振动台试验,分析对比了固接、隔震、消能三种模型在不同地震作用下的动力特性和地震反应。试验采用场地波、El Centro波、Taft波等三种地面运动,以不同的地震加速度幅值进行X,Y,Z三个主轴方向的地震试验。试验测得的数据和试验时的宏观现象进行综合分析结果表明,固接结构、消能结构、隔震结构在7度小震、中震、大震作用下,自振周期变化均控制在10%以内,可以认为结构基本上均处于弹性工作阶段。采取隔震措施,可以明显改善结构的抗震性能,对于平面不规则结构,更能改善结构的抗扭性能,提高结构的抗震安全性。
In order to investigate the seismic performance of area E in Guangdong Science Centre,improve seismic safety of the structure,and effectively protect the structure interior equipment,apparatus,and the safety of exhibits,a model with a scale of 1∶35 was fabricated and tested on the large-scale shaking-table.Three kinds of models for the consolidation,isolation,energy dissipation under different seismic dynamic characteristics and seismic response were analyzed and compared.In the test,three kinds of ground motions including space waves,El Centro wave,Taft wave were used with different amplitudes of the seismic acceleration for three axis directions of X,Y,Z.It can be found out from a comprehensive analysis with the test data and phenomena that the change of the natural frequency of structure,energy dissipation structure,isolated structure is less than 10%,the structure are basically in elastic working stages,and taking isolation measures can significantly improve the seismic performance.And for irregular surface structure,the torsional performance will be enhanced and the seismic safety of structures nature will be increased.
In order to investigate the seismic performance of area E in Guangdong Science Centre,improve seismic safety of the structure,and effectively protect the structure interior equipment,apparatus,and the safety of exhibits,a model with a scale of 1∶35 was fabricated and tested on the large-scale shaking-table.Three kinds of models for the consolidation,isolation,energy dissipation under different seismic dynamic characteristics and seismic response were analyzed and compared.In the test,three kinds of ground motions including space waves,El Centro wave,Taft wave were used with different amplitudes of the seismic acceleration for three axis directions of X,Y,Z.It can be found out from a comprehensive analysis with the test data and phenomena that the change of the natural frequency of structure,energy dissipation structure,isolated structure is less than 10%,the structure are basically in elastic working stages,and taking isolation measures can significantly improve the seismic performance.And for irregular surface structure,the torsional performance will be enhanced and the seismic safety of structures nature will be increased.
引文
[1]广东科学中心隔震和消能结构模型模拟地震振动台试验研究报告(ST-0501-189)[R].广州:广州大学工程抗震研究中心,2005.
[2]JGJ101—96建筑抗震试验方法规程[S].北京:中国建筑工业出版社,1997.
[3]周福霖.工程结构减振控制[M].北京:地震出版社,1997.
[4]GB50011—2001建筑抗震设计规范[S].2008年版.北京:中国建筑工业出版社,2008.
[5]广东科学中心工程场地地震安全性评价报告[R].广东省地震工程勘测中心,2004.
[6]JGJ3—2002高层建筑混凝土结构技术规程[S].北京:中国建筑工业出版社,2002.
[2]JGJ101—96建筑抗震试验方法规程[S].北京:中国建筑工业出版社,1997.
[3]周福霖.工程结构减振控制[M].北京:地震出版社,1997.
[4]GB50011—2001建筑抗震设计规范[S].2008年版.北京:中国建筑工业出版社,2008.
[5]广东科学中心工程场地地震安全性评价报告[R].广东省地震工程勘测中心,2004.
[6]JGJ3—2002高层建筑混凝土结构技术规程[S].北京:中国建筑工业出版社,2002.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心