大底盘层间隔震结构抗震性能研究
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摘要
随着我国城市化进程的加快,高层建筑已屡见不鲜,而大底盘塔式结构最为常见。由于大底盘和塔楼之间刚度和质量的突变,使其抗震性能明显降低,如何提高这类结构的抗震性能成为工程界需要解决的重要问题之一。目前,工程中普遍使用的方法是使用变形缝将塔楼与附属建筑分开,但这种做法不仅构造麻烦,而且也给结构的正常使用带来不便。本文研究通过在塔楼和大底盘之间设置隔震层的方法,解决大底盘和塔楼之间刚度及质量突变的问题,通过应用SAP2000软件的建模分析,对比塔式结构按传统抗震设计方法和按层间隔震设计方法设计的动力特性、变形特点,确定出大底盘塔式结构设置层间隔震的优点,为这类工程的实际应用提供了理论支持。
Along with the acceleration of urbanization,now,the high-rise buildings are nothing new in China,and the structure with enlarged base is the mostly used.As the earthquake-resistant performance of this structure is greatly weakened for the sudden change of stiffness and quality between the enlarged base and tower,how to improve the earthquake-resistant performance has become one of the important problems to be solved in engineering circles.Presently,a commonly applied method is to separate the tower from ancillary buildings by using the distortion seam.But this method is difficult to be constructed and may affect the normal use of the structures.Here,through setting the isolation layer between the tower and enlarged base,the problem of sudden change of the stiffness and quality could be solved.Through analyzing the model setting by the software SAP2000 and comparing the deformation and dynamic characteristics of the tower structures with different earthquake-resistant designs respectively,the traditional design method and the method of using interlayer isolation are put forward.Finally,the advantages of the structures with interlayer isolation are found out,thus to provide the theoretical support for the practical application of such projects.
Along with the acceleration of urbanization,now,the high-rise buildings are nothing new in China,and the structure with enlarged base is the mostly used.As the earthquake-resistant performance of this structure is greatly weakened for the sudden change of stiffness and quality between the enlarged base and tower,how to improve the earthquake-resistant performance has become one of the important problems to be solved in engineering circles.Presently,a commonly applied method is to separate the tower from ancillary buildings by using the distortion seam.But this method is difficult to be constructed and may affect the normal use of the structures.Here,through setting the isolation layer between the tower and enlarged base,the problem of sudden change of the stiffness and quality could be solved.Through analyzing the model setting by the software SAP2000 and comparing the deformation and dynamic characteristics of the tower structures with different earthquake-resistant designs respectively,the traditional design method and the method of using interlayer isolation are put forward.Finally,the advantages of the structures with interlayer isolation are found out,thus to provide the theoretical support for the practical application of such projects.
引文
[1]吴韬,盛宏玉,陶明白.层间隔震结构的动力时程分析[J].工程与建设,2008,22(5):637-640.
[2]王开岭,雷静雅,杨辉.隔震技术的发展应用研究[J].国外建材科技,2007,28(2):118-121.
[3]北京金土木软件技术有限公司,中国建筑标准设计研究院编著.SAP2000中文版使用指南[M].北京:人民交通出版社,2008.
[4]李玉珍,祁皑.大底盘单塔层间隔震结构分析[C]//第四届全国防震减灾工程学术研讨会会议论文集.福州,2009.
[2]王开岭,雷静雅,杨辉.隔震技术的发展应用研究[J].国外建材科技,2007,28(2):118-121.
[3]北京金土木软件技术有限公司,中国建筑标准设计研究院编著.SAP2000中文版使用指南[M].北京:人民交通出版社,2008.
[4]李玉珍,祁皑.大底盘单塔层间隔震结构分析[C]//第四届全国防震减灾工程学术研讨会会议论文集.福州,2009.
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