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[1]马飞,洪宝宁,刘鑫.涵-土接触面参数对涵洞周围土压力的影响分析[J].南京工业大学学报(自然科学版),2018,40(02):132-136.[doi:10.3969/j.issn.1671-7627.2018.02.021]
 MA Fei,HONG Baoning,LIU Xin.Impact analysis of culverts-soils interfaces' character parameters on the earth pressure around the culverts[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2018,40(02):132-136.[doi:10.3969/j.issn.1671-7627.2018.02.021]
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涵-土接触面参数对涵洞周围土压力的影响分析
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
40
期数:
2018年02期
页码:
132-136
栏目:
出版日期:
2018-03-20

文章信息/Info

Title:
Impact analysis of culverts-soils interfaces' character parameters on the earth pressure around the culverts
文章编号:
1671-7627(2018)02-0132-05
作者:
马飞12洪宝宁12刘鑫13
1.河海大学 岩土力学与堤坝工程教育部重点实验室,江苏 南京 210098; 2.河海大学 江苏省岩土工程技术工程研究中心,江苏 南京 210098; 3.河海大学 隧道与地下工程研究所,江苏 南京 210098
Author(s):
MA Fei12HONG Baoning12LIU Xin13
1.Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering,Hohai University, Nanjing 210098,China; 2.Jiangsu Research Center for Geotechnical Engineering Technology,Hohai University, Nanjing 210098,China; 3.Tunnel and Underground Engineering Institute,Hohai University,Nanjing 210098,China
关键词:
接触面 强度折减因子 虚拟厚度因子 涵洞 土压力
Keywords:
interfaces strength reduction factor virtual thickness factor culverts earth pressure
分类号:
TU432
DOI:
10.3969/j.issn.1671-7627.2018.02.021
文献标志码:
A
摘要:
采用有限元数值计算软件PLAXIS,对涵洞周围土压力分布规律进行分析,并讨论涵-土接触面参数取值对涵洞周围土压力的影响。结果表明:涵洞周围土压力大多呈非线性分布,在其角点区域应力集中现象明显,并且填土达一定高度之后涵洞侧墙将出现明显的侧向土拱效应; 此外,涵顶垂直土压力系数随强度折减因子的增大而增大,当强度折减因子大于0.6时,该系数变化趋于稳定; 提高强度折减因子及虚拟厚度因子的取值,有助于减缓角点附近的应力震荡和应力集中现象。
Abstract:
PLAXIS,a finite element numerical software was used to analyze the distribution of earth pressure around the culverts and the impact of culvert-soil interface's parameters on it.The calculation results showed that the distributions of earth pressure around the culverts were all nonlinear.Simultaneously,the area near the corner could appear the stress concentration.The lateral wall appeared obvious soil arch effect,when the filled soil reached a certain height; Besides,the vertical earth pressure coefficient on the top slab increasesd with the increase strength reduction factor.Moreover,the vertical earth pressure coefficient tended to be basically stable when the strength reduction factor was larger than 0.6,it finally revealed that both the increase of interfaces' strength reduction factor and virtual thickness factor could help to relieve the stress oscillation near the corner and improve the area of stress concentration.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2017-04-26
基金项目:江苏省自然科学基金青年基金(BK20140848); 广东省交通运输厅科技项目(科技-2015-02-013, 科技-2015-02-015); 中央高校基本科研业务费专项资金(2014B34414)
作者简介:马飞(1990—),男,江苏盐城人,硕士,主要研究方向为道路工程、地基处理; 洪宝宁(联系人),教授,E-mail: hongbaoning24@sohu.com.
引用本文:马飞,洪宝宁,刘鑫.涵-土接触面参数对涵洞周围土压力的影响分析[J].南京工业大学学报(自然科学版),2018,40(2):132-136..
更新日期/Last Update: 2018-03-30