结构动力弹塑性分析地震波的选取原则
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摘要
总结分析国内外地震波研究成果,结合中国相关规范,提出地震波选取原则:根据结构动力特性、反应谱曲线初选地震波,对结构进行弹性时程分析;然后对其分析结果依据振型分解反应谱法基底剪力的"下限"要求以及波的离散性筛选地震波,确定动力弹塑性时程分析的地震波;最后对弹塑性分析计算过程及结果进行分析判断,确保分析结果真实可靠.理论分析和具体工程实例表明,利用这一原则选取地震波,概念比较清晰,实施相对简单,有利于在结构动力弹塑性分析过程中迅速选择合适的地震波.
By means of summarizing and analyzing the investigation results of seismic wave domes and abroad and incorporating with relevant codes,the selection principle of earthquake wave was presented and preselected according to structural dynamic property and response spectrum curve to carry out the structural elastic time history analysis.Then based on the analysis result,the earthquake wave was screen-selected based on the bottom shear limit requirement of mode-superposition response spectrum method and discreteness of the wave and the seismic wave of dynamic elasto-plastic time history analysis was determined.Finally,the elasto-plastic analysis calculation process and its result were analyzed and determined to ensure the reliability and validity of the result.It was shown by theoretical analysis and specific examples in engineering that the concept of seismic wave selection with the proposed principle was clear,its implementation was simple,and was beneficial to select proper waves quickly in structural elasto-plastic dynamic analysis.
By means of summarizing and analyzing the investigation results of seismic wave domes and abroad and incorporating with relevant codes,the selection principle of earthquake wave was presented and preselected according to structural dynamic property and response spectrum curve to carry out the structural elastic time history analysis.Then based on the analysis result,the earthquake wave was screen-selected based on the bottom shear limit requirement of mode-superposition response spectrum method and discreteness of the wave and the seismic wave of dynamic elasto-plastic time history analysis was determined.Finally,the elasto-plastic analysis calculation process and its result were analyzed and determined to ensure the reliability and validity of the result.It was shown by theoretical analysis and specific examples in engineering that the concept of seismic wave selection with the proposed principle was clear,its implementation was simple,and was beneficial to select proper waves quickly in structural elasto-plastic dynamic analysis.
引文
[1]杨志勇,黄吉锋,邵弘.弹性与弹塑性动力时程分析方法中若干问题探讨[J].建筑结构学报,2008(6):213-217.
[2]王亚勇,刘小弟,程民宪.建筑结构时程分析法输入地震波的研究[J].建筑结构学报,1991,12(2):51-60.
[3]陆新征,叶列平,廖志伟.建筑抗震弹塑性分析[M].北京:中国建筑工业出版社,2010.
[4]赵伯明,王挺.高层建筑结构时程分析的地震波输入[J].沈阳建筑大学学报:自然科学版,2010,26(6):1111-1118.
[5]曹资,薛素铎,王雪生,等.空间结构抗震分析中的地震波选取与阻尼比取值[J].空间结构,2008(9):3-8.
[6]中国地震局工程力学研究所.CECS160:2004建筑工程抗震性态设计通则[S].北京:中国计划出版社,2004.
[7]中华人民共和国住房和城乡建设部.GB50011—2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010.
[8]中华人民共和国住房和城乡建设部.JGJ3—2010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,2010.
[2]王亚勇,刘小弟,程民宪.建筑结构时程分析法输入地震波的研究[J].建筑结构学报,1991,12(2):51-60.
[3]陆新征,叶列平,廖志伟.建筑抗震弹塑性分析[M].北京:中国建筑工业出版社,2010.
[4]赵伯明,王挺.高层建筑结构时程分析的地震波输入[J].沈阳建筑大学学报:自然科学版,2010,26(6):1111-1118.
[5]曹资,薛素铎,王雪生,等.空间结构抗震分析中的地震波选取与阻尼比取值[J].空间结构,2008(9):3-8.
[6]中国地震局工程力学研究所.CECS160:2004建筑工程抗震性态设计通则[S].北京:中国计划出版社,2004.
[7]中华人民共和国住房和城乡建设部.GB50011—2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010.
[8]中华人民共和国住房和城乡建设部.JGJ3—2010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,2010.
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