盖挖法托换技术在沈阳站地下通道工程中的应用

doi:10.12068/j.issn.1005-3026.2015.02.026

东北大学学报:自然科学版 ›› 2015, Vol. 36 ›› Issue (2): 274-279.DOI: 10.12068/j.issn.1005-3026.2015.02.026

盖挖法托换技术在沈阳站地下通道工程中的应用

陈晨¹，赵文¹，李慎刚¹，庞宇斌²

(1.东北大学资源与土木工程学院，辽宁沈阳110819; 2.中国建筑东北设计研究院有限公司，辽宁沈阳110003)

收稿日期:2013-10-09 修回日期:2013-10-09 出版日期:2015-02-15 发布日期:2014-11-07
通讯作者: 陈晨
作者简介:陈晨(1981-)，男，辽宁沈阳人，东北大学博士研究生；赵文(1962-)，男，内蒙古集宁人，东北大学教授，博士生导师.
基金资助:
“十二五”国家科技支撑计划项目( 2012BAK24B01)；中央高校基本科研业务费专项资金资助项目( N11301003).

Underpinning Technique Based on Cover-Cut Method for Underground Passage Project at Shenyang Railway Station

CHEN Chen¹， ZHAO Wen¹， LI Shen-gang¹， PANG Yu-bin²

1. School of Resources & Civil Engineering， Northeastern University， Shenyang 110819， China； 2. China Northeast Architectural Design & Research Institute Co.， Ltd.， Shenyang 110003， China.

Received:2013-10-09 Revised:2013-10-09 Online:2015-02-15 Published:2014-11-07
Contact: CHEN Chen
About author:-
Supported by:
-

摘要/Abstract

摘要： 通过对沈阳站东站房地下通道工程开挖过程的数值模拟，对基坑开挖过程中地面沉降、支护桩的变形、立柱的内力和下卧地铁区间的变形进行了计算分析.结果表明，托换板可以有效地限制支护桩的水平位移和基底土体的隆起，进而控制地表沉降的产生；基坑开挖过程中所引起的基底土体隆起会使立柱自身的轴力增大，影响内支撑结构体系的稳定；基坑开挖对其下卧地铁区间的水平、竖向位移有明显影响，区间以“水平向压缩、竖向拉伸”的椭圆形形式产生收敛变形.交叉建设的基坑工程对周围环境及建构筑物的影响不容忽略.

关键词: 基坑开挖, 托换技术, 盖挖法, 地面沉降, 地下通道, 地铁

Abstract: The excavation process of the underground passage under the east station house at Shenyang station was simulated by FEM. The land subsidence， deformation of retaining piles， inner force of stand columns， and the deformation of underlying tunnel were analyzed. The results show that underpinned plates can limit the horizontal displacement of retaining piles and the upheaval of the pit bottom effectively， thus controlling the land subsidence. The upheaval of the soil at the pit bottom caused by the excavation process leads to the increase of the axial force of stand column， which may affect the stability of the support structure system. Moreover， the excavation process has an obvious effect on horizontal and vertical displacement of underlying tunnel， where one kind of convergent deformation happens in the tunnel in the form of ‘the horizontal compression and the vertical stretch’. The impact of the cross constuction of foundation pit on the ambient environment and structures cannot be ignored.

Key words: pit excavation, underpinning technique, cover-cut method, land subsidence, underground passage, subway

中图分类号:

TU94

陈晨，赵文，李慎刚，庞宇斌. 盖挖法托换技术在沈阳站地下通道工程中的应用[J]. 东北大学学报:自然科学版, 2015, 36(2): 274-279.

CHEN Chen， ZHAO Wen， LI Shen-gang， PANG Yu-bin. Underpinning Technique Based on Cover-Cut Method for Underground Passage Project at Shenyang Railway Station[J]. Journal of Northeastern University Natural Science, 2015, 36(2): 274-279.

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盖挖法托换技术在沈阳站地下通道工程中的应用

Underpinning Technique Based on Cover-Cut Method for Underground Passage Project at Shenyang Railway Station

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