对拉结构在邻近深基坑中的应用

陈海军; 郝国鹏

doi:10.3973/j.issn.1672-741X.2013.03.008

隧道建设 >

2013 , Vol. 33 >Issue 3: 215 - 219

DOI: https://doi.org/10.3973/j.issn.1672-741X.2013.03.008

规划与设计

对拉结构在邻近深基坑中的应用

陈海军 ,
郝国鹏

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（1.中铁隧道勘测设计院有限公司，天津 300133； 2.洛阳路桥建设集团有限责任公司，河南洛阳 471000）

陈海军（1978—），男，河南鄢陵人，2001年毕业于西南交通大学土木工程专业，本科，工程师，从事隧道与地下工程设计工作。

收稿日期: 2012-12-06

修回日期: 2013-02-16

网络出版日期: 2013-03-23

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Application of Cross Structures in Neighboring Foundation Pits

CHEN Haijun ,
HAO Guopeng

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(1.China Railway Tunnel Survey & Design Institute Co., Ltd.， Tianjin 300133, China； 2. Luoyang Road & Bridge Construction Group Co., Ltd., Luoyang 471000, Henan, China)

Received date: 2012-12-06

Revised date: 2013-02-16

Online published: 2013-03-23

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摘要

为了解决特殊情况下相邻深基坑围护结构的支护问题，采用了对拉结构，通过采用联系梁及对拉锚索，将相邻深基坑的围护结构与土体连结成有机整体，使得围护结构与围岩协同作用，充分利用围岩的自稳能力，保证基坑的安全。文章通过对几个工程案例的分析，阐明了对拉结构的计算模式、计算要点及构造组成，明确了计算方法和设计思路。经工程实践，对于场地狭小、周边环境复杂的邻近深基坑，对拉结构具有独特优势。

关键词： 对拉结构; 深基坑; 联系梁; 对拉锚索

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陈海军 , 郝国鹏 . 对拉结构在邻近深基坑中的应用[J]. 隧道建设, 2013 , 33(3) : 215 -219 . DOI: 10.3973/j.issn.1672-741X.2013.03.008

Abstract

This paper introduces a kind of cross structure to neighboring foundation pits to act as the bracing system of the foundation pits. The cross beams and the cross anchors keep the retaining structure and the soil mass into an integral part. The cross structure makes full use of the stability of the rock mass and ensures the safety of the foundation pits. Based on the analysis on the engineering cases, this paper provides the structure calculation model, the key points of the calculation and the structural composition, and confirms the calculation method and the design concept. The engineering practice proves that the cross structure has unique advantages to cope with the problems of neighboring foundation pits in small site areas and complex environment.

Key words： cross structure; deep foundation pit; cross beam; cross anchor

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