[1]张久麒,孙锐,袁晓铭,等.软土残余应变势简化计算公式及参数分析[J].地震工程与工程振动,2017,01(05):103-108.[doi:10.13197/j.eeev.2017.05.103.zhangjq.012]
 ZHANG Jiuqi,SUN Rui,YUAN Xiaoming,et al.The simplified formula for calculating the permanent strain potential of soft soil and parameter analysis[J].EARTHQUAKE ENGINEERING AND ENGINEERING DYNAMICS,2017,01(05):103-108.[doi:10.13197/j.eeev.2017.05.103.zhangjq.012]
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软土残余应变势简化计算公式及参数分析
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《地震工程与工程振动》[ISSN:/CN:]

卷:
01
期数:
2017年05期
页码:
103-108
栏目:
论文
出版日期:
2017-10-01

文章信息/Info

Title:
The simplified formula for calculating the permanent strain potential of soft soil and parameter analysis
作者:
张久麒1 孙锐1 袁晓铭1 侯龙清2
1. 中国地震局工程力学研究所, 中国地震局地震工程与工程振动重点实验室, 黑龙江 哈尔滨 150080;
2. 东华理工大学 建筑工程学院, 江西 抚州 344000
Author(s):
ZHANG Jiuqi1 SUN Rui1 YUAN Xiaoming1 HOU Longqing2
1. Key Laboratory of Earthquake Engineering and Engineering Vibration, Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, China;
2. College of Civil Engineering and Architecture, East China University of Technology, Fuz
关键词:
软土不均匀震陷残余应变势震陷参数参数分析
Keywords:
soft soildifferential settlementpermanent strain potentialsettlement parameterparameter analysis
分类号:
TU4
DOI:
10.13197/j.eeev.2017.05.103.zhangjq.012
摘要:
利用以往试验结果,提出一套修正的软土残余应变势简化计算公式。依据剪切波速与各震陷参数的关系曲线,对以往软土残余应变势计算参数不合理部分进行了修正,并用唐山大地震中塘沽地区实际震陷资料进行了检验,在此基础上研究了土性和动力参数对残余应变势变化影响规律。结果表明:依据修正参数得到的残余应变势值符合客观规律;地基承载力是残余变形最重要的控制指标,土的地基承载力较高时,即使埋深较浅且受到较强和较多次数的动应力,其残余变形也很小;土残余应变势与动应力幅值、动应力作用次数分别呈非线性递增关系和线性递增关系。本文结果可为深入认识软土残余应变势的发生发展规律提供基础,另一方面也为今后软土地区结构震陷计算分析提供了可靠工具。
Abstract:
Based on the results of past tests, a simplified formula for calculating the permanent strain potential of soil is presented by modifying. According to the curves of shear wave velocity versus settlement parameters, the unreasonable parameters of the formula for calculating the permanent strain potential are modified, and also the modified settlement parameters are tested by the actual settlement in Tanggu area of Tangshan earthquake. Meanwhile the modified settlement parameters are conducted to study the influence law of permanent strain potential by soil and dynamic parameter. The results indicate:the variation of permanent strain potential accords with objective law; bearing capacity of foundation of soil is the most important control index of permanent deformation, the permanent deformation shows very low at the lower bearing capacity of foundation soil layer even though under the stronger and more dynamic stress and at the low layer; the relationship between permanent strain potential and the amplitude of dynamic stress and the number of dynamic stress is increasing nonlinearly and linearly. The results of this paper provide a basis for understanding the occurrence and development of permanent strain potential of soft soil, and also provide a reliable tool for calculating and analysing structural seismic settlement in soft soil area in the future.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2016-11-10;改回日期:2017-01-18。
基金项目:中央级公益性研究所基本科研业务费专项(2016A02);国家自然科学基金项目(41272357)
作者简介:张久麒(1991-),男,硕士研究生,主要从事岩土地震工程研究.E-mail:jiuqijuve10@163.com
通讯作者:孙锐(1972-),女,研究员,博士,主要从事岩土地震工程研究.E-mail:iemsr@163.com
更新日期/Last Update: 2017-10-25