[1]何颖,梁建文.非线性场地基岩功率谱反演的一个方法[J].地震工程与工程振动,2019,39(03):134-142.[doi:10.13197/j.eeev.2019.03.134.hey.013]
 HE Ying,LIANG Jianwen.A method for inversion of power spectrum of bedrock considering soil nonlinearity[J].EARTHQUAKE ENGINEERING AND ENGINEERING DYNAMICS,2019,39(03):134-142.[doi:10.13197/j.eeev.2019.03.134.hey.013]
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非线性场地基岩功率谱反演的一个方法
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《地震工程与工程振动》[ISSN:/CN:]

卷:
39
期数:
2019年03
页码:
134-142
栏目:
论文
出版日期:
2019-06-30

文章信息/Info

Title:
A method for inversion of power spectrum of bedrock considering soil nonlinearity
作者:
何颖1 梁建文2
1. 天津城建大学 土木建筑结构防护与加固天津市重点实验室, 天津 300384;
2. 天津大学 水利工程仿真与安全国家重点实验室, 天津 300350
Author(s):
HE Ying1 LIANG Jianwen2
1. Tianjin Key Laboratory of Civil Structure Protection and Reinforcement, Tianjin Chengjian University, Tianjin 300384, China;
2. State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300350, China
关键词:
基岩地震动功率谱反演土体非线性地震动模拟
Keywords:
bedrock motionpower spectruminversionsoil nonlinearitysimulation of earthquake motion
分类号:
P315.3
DOI:
10.13197/j.eeev.2019.03.134.hey.013
摘要:
提出了非线性场地基岩功率谱反演的一个方法。基于一维层状场地波动理论,利用等效线性化法考虑场地土的非线性,通过给定的地表运动功率谱反演得到基岩运动功率谱,进而利用基岩运动功率谱模拟基岩随机地震动。土层等效剪应变取各样本等效剪应变的平均值。并利用金井清功率谱和日本Kik-Net台站记录对该方法进行了验证。结果表明,该方法能够较为方便且准确的得到符合场地非线性特性的基岩功率谱,具有一定的工程应用价值。
Abstract:
A method for inversion of power spectrum of bedrock considering soil nonlinearity of the site is proposed. Based on the one-dimensional layered site wave theory, the equivalent linearization method is used to consider the nonlinearity of site soil. The power spectrum of bedrock motion is obtained by inversion of the given power spectrum of surface motion, and then the random ground motion of bedrock is simulated by the power spectrum of bedrock motion.The equivalent shear strain of soil layer is taken as the average of the equivalent shear strain of each sample.The method is validated by using Kanai-Tajimi power spectrum and Kik-Net station records in Japan. The results show that this method can obtain the power spectrum of bedrock which accords with the soil nonlinearity of the site conveniently and accurately. The method has certain engineering application value.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2018-7-25;改回日期:2018-10-12。
基金项目:国家自然科学基金项目(51578372)
作者简介:何颖(1983-),女,讲师,博士,主要从事地震工程研究.E-mail:he114@126.com
通讯作者:梁建文(1965-),男,教授,博士,主要从事地震工程研究.E-mail:liang@tju.edu.cn
更新日期/Last Update: 1900-01-01