基于相位余弦分区的人造地震动反应谱拟合

英文篇名：Artificial ground motion compatible with design response spectrum based on phase cosine partitions method
中文刊名：地震工程与工程振动
英文刊名：Journal of Earthquake Engineering and Engineering Vibration
作者：李海山 ; 丁阳
英文作者：LI Haishan1 ; 2 ; DING Yang1 ; 3(1.School of Civil Engineering ; Tianjin University ; Tianjin 300072 ; China ; 2.College of Architecture Engineering and Mechanics ; Yanshan University ; Qinhuangdao 066004 ; China ; 3.Key Laboratory of Civil Engineering Structures and safety in Costal Area(Tianjin University) ; Ministry of Education ; Tianjin 300072 ; China)
中文关键词：余弦分区 ; 相位调整 ; 幅值调整 ; 人造地震动 ; 反应谱
英文关键词：cosine partition ; phase adjustment ; amplitude adjustment ; artificial ground motion ; response spectrum
出版日期：2011-02-15
机构：天津大学建筑工程学院;燕山大学建筑工程与力学学院;天津大学滨海土木工程结构与安全教育部重点实验室;
年：2011
期：01
出版单位：地震工程与工程振动

摘要

为解决人造地震动拟合时出现的经幅值调整仍未收敛的问题,分析了造成相位调整效果不稳定的原因并给出有关参数的补充公式,提出由地震动各分量反应对应的相位余弦符号来实现相位分区并给出各分区的相位调整方法。针对经相位调整仍无法收敛情况,在相位调整完成后继续使用幅值调整来改善拟合效果。算例表明本方法可有效实现迭代收敛并生成较好拟合规范反应谱的人造地震动。
In order to eliminate the non-convergence occurring sometimes in amplitude adjustment for synthesizing artificial ground motion,the unsatisfactory reason of phase adjustment is analyzed and the supplemental formula for relevant parameters is provided.By judging phase partition based on phase cosine symbol of ground motion component's responses,the phase adjustment method based on cosine partitions is presented.For the non-convergence of phase adjustment in some cases,the application of amplitude adjustment after phase adjustment is proposed.Numerical examples show that the adjustment method based on phase cosine partitions can eliminate the non-convergence and the artificial ground motion compatible well with design response spectrum can be obtained.

引文

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