工程降水引起地基固结沉降三维数值分析

马春景1a; 1b; 姜谙男*1a; 1b; 白冰2; 石静3

doi:10.16411/j.cnki.issn1006-7736.2015.02.022

大连海事大学学报 >

2015 , Vol. 41 >Issue 2: 123 - 128

DOI: https://doi.org/10.16411/j.cnki.issn1006-7736.2015.02.022

船舶与海洋工程

工程降水引起地基固结沉降三维数值分析

马春景^1a ,
1b ,
姜谙男^*1a ,
1b ,
白冰² ,
石静³

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（1. 大连海事大学 a. 道路与桥梁工程研究所；b.辽宁省公路工程重点实验室，辽宁大连 116026；2. 中国铁建大桥工程局集团有限公司, 辽宁大连 116033；3.大连市交通工程质量监督站，辽宁大连 116037）

马春景(1990-)，男，硕士生.

收稿日期: 2014-03-09

修回日期: 2014-08-08

网络出版日期: 2014-08-08

基金资助

大连市交通科技项目 (2011-10)；辽宁省科学事业公益研究基金资助项目 (2013003003)；中央高校基本科研业务费优秀科技创新团队培育计划资助项目(3132014326).

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Three-dimensionalnumerical analysis of consolidation subsidence of foundation caused by engineering precipitation

MA Chun-jing^1a ,
1b ,
JIANG An-nan^*1a ,
1b ,
BAI Bing² ,
SHI Jing³

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(1a. Institute of Road and Bridge Engineering； 1b. State Key Laboratory of Highway Engineering of Liaoning Province， Dalian Maritime University,

Dalian 116026, China; 2. China Railway Major Bridge Engineering Group Co., Ltd, Dalian 116026, China；3.Dalian Traffic Engineering Quality Administer Station, Dalian 116037，China)

Received date: 2014-03-09

Revised date: 2014-08-08

Online published: 2014-08-08

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摘要

为保证施工现场条件的干燥性，必须采取措施降低地下水水位，但是降水后会引起土体的固结沉降，对地面早已存在的建筑物构成潜在的威胁. 工程降水施工诱发地基沉降是一个三维空间流固耦合问题，借助三维有限差分数值模拟软件FLAC3D建立地层降水过程中渗流场与应力场耦合模型，以金普线地铁隧道8标降水工程为例进行数值模拟，探究土体在饱和状态下改变地层渗透系数达到渗流稳定时的沉降和地下水分布特征.

关键词： 工程降水; 渗透系数; 固结沉降; FLAC3D; 流固耦合

本文引用格式

马春景^1a , 1b , 姜谙男^*1a , 1b , 白冰² , 石静³ . 工程降水引起地基固结沉降三维数值分析[J]. 大连海事大学学报, 2015 , 41(2) : 123 -128 . DOI: 10.16411/j.cnki.issn1006-7736.2015.02.022

Abstract

To ensure the dry conditions of the construction site, several measures were adopted to lower the groundwater level. But it should bring negative effects to the

surrounding constructions, such as consolidation subsidence. Taking Jinzhou-Pulandian line 8th section of underground tunnel precipitation engineering as an example, the hree-dimensional differential numerical simulation software FLAC3D was used to establish the coupled model of seepage and stress field during dewatering process. The objective of this study is to explore soil subsidence and distribution of groundwater with the change of permeability coefficient under the condition of saturation.

Key words： engineering precipitation; permeablility coefficient; consolidation subsidence; FLAC^3D; fluid-solid coupling

参考文献

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