[1]孙静,熊宏强,公茂盛,等.土的动剪切模量非线性特性对地震动的影响研究[J].地震工程与工程振动,2018,(02):028-34.[doi:10.13197/j.eeev.2018.02.28.sunj.004]
 SUN Jing,XIONG Hongqiang,GONG Maosheng,et al.Study on the influence of nonlinear characteristics of dynamic shear modulus of soil on surface ground motion[J].EARTHQUAKE ENGINEERING AND ENGINEERING DYNAMICS,2018,(02):028-34.[doi:10.13197/j.eeev.2018.02.28.sunj.004]
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土的动剪切模量非线性特性对地震动的影响研究
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《地震工程与工程振动》[ISSN:/CN:]

卷:
期数:
2018年02
页码:
028-34
栏目:
论文
出版日期:
2018-08-03

文章信息/Info

Title:
Study on the influence of nonlinear characteristics of dynamic shear modulus of soil on surface ground motion
作者:
孙静1 熊宏强1 公茂盛2 袁晓铭2
1. 黑龙江大学 建筑工程学院, 黑龙江 哈尔滨 150080;
2. 中国地震局 工程力学研究所, 中国地震局地震与工程振动重点实验室, 黑龙江 哈尔滨 150080
Author(s):
SUN Jing1 XIONG Hongqiang1 GONG Maosheng2 YUAN Xiaoming2
1. Institute of Civil Engineering, Heilongjiang University, Harbin 150080, China;
2. Key Laboratory of Earthquake Engineering and Engineering Vibration, Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, China
关键词:
动剪切模量地震动地表加速度峰值反应谱特征周期
Keywords:
dynamic shear modulussurface ground motionsurface acceleration peakresponse spectrumcharacteristic period
分类号:
TU441
DOI:
10.13197/j.eeev.2018.02.28.sunj.004
摘要:
通过一维等效线性化方法研究土的动剪切模量非线性特性对土层地震反应的影响,主要分析动剪切模量比与剪应变关系曲线以及最大动剪切模量对反应谱特征周期和地表加速度峰值的影响。结果表明,对于小震和中震,土的动剪切模量比和最大动剪切模量对反应谱特征周期略有影响,对地表加速度峰值影响并不明显;但对于大震,对反应谱特征周期和地表加速度峰值影响较大,随着动剪切模量比和最大动剪切模量的增大,反应谱特征周期减小,地表加速度峰值增大,土层越厚其影响越大。二者对比结果表明,强震下土的动剪切模量比与剪应变关系曲线对地震动的影响程度要比最大动剪切模量对地震动的影响大得多,说明强震下土的动剪切模量比与剪应变关系曲线对土层地震反应会产生更显著影响。
Abstract:
The effects of the dynamic shear modulus versus the shear strain and the maximum dynamic shear modulus on response spectrum and surface acceleration peak are evaluated by the one-dimensional equivalent linear method. The calculated results indicate that the effects of the dynamic shear modulus versus the shear strain and the maximum dynamic shear modulus on the characteristic period and surface acceleration peak is generally not very notable for incidence of the small and medium earthquakes. The results also indicate that the degree of its influence on the characteristic period and surface acceleration peak is remarkable for the incidence of the strong earthquakes, it makes the characteristic period decrease and makes the surface acceleration peak increase at same time. By comparing to the calculated results, the dynamic shear modulus versus the shear strain in evaluating the strong ground motion of earthquakes is more sensitive than the maximum dynamic shear modulus in a sense.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2017-04-26;改回日期:2017-06-15。
基金项目:国家自然科学基金项目(51678541,51108163);黑龙江省自然科学基金项目(A201417)
作者简介:孙静(1973-),女,教授,博士,主要从事岩土地震工程和土动力学的研究.E-mail:iemsunj@163.com
更新日期/Last Update: 1900-01-01