香港复杂环境条件下全断面扇形灌浆法加固既有铁路路基研究与应用
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- 英文论文题名：The research and implementation of consolidating technique for the subgrade of the existing railway with full-face fan shaped grouting for complex urban environment in Hong Kong
- 论文作者：潘树杰 ; 虞培忠 ; 何军 ; 王志涛
- 英文论文作者：Pan Shujie ; Yu Peizhong ; He jun ; Wang zhitao ; China State Construction International Holdings Limited ; China State Construction Engineering(Hong Kong) Limited
- 年：2016
- 作者机构：中国建筑国际集团有限公司;中国建筑工程(香港)有限公司;
- 论文关键词：复杂环境 ; 铁路路基 ; 灌浆帷幕 ; 全断面扇形灌浆
- 英文论文关键词：complex environment ; railway subgrade ; curtain grouting ; full-face fan shaped groutin
- 会议召开时间：2016-09-26
- 会议录名称：中国土木工程学会2016年学术年会论文集
- 语种：中文
- 分类号：U213.1
- 学会代码：OGTY
- 会议名称：中国土木工程学会2016年学术年会
- 会议地点：中国北京
- 主办单位：中国土木工程学会
- 学会名称：中国土木工程学会
- 页数：9
- 文件大小：2157k
- 原文格式：O
- 会议级别：全国
摘要
港铁机场快线铁路修建于填海路基上,下穿机场快线铁路是整个港珠澳大桥香港接线的关键控制工程之一。本文介绍了既有铁路路基全断面扇形灌浆法加固技术,先在加固土体区域设置四道灌浆帷幕墙,形成封闭箱体,再在隔水箱体内进行填充灌浆以保证灌浆质量。基于数值计算设计加固后土体参数,根据现场地层条件选择灌浆材料,施工过程中灌浆压力和灌浆量双重控制,全过程自动监控敏感沉降指标。本工程相关经验为城市复杂环境条件下类似既有铁路路基加固工程建设提供重要参考。
The Hong Kong airport express rail line was built on the filling subgrade.The rail line under crossing existing airport express rail line is the critical work of the whole project of Hong Kong,Zhuhai and Macau Bridge.This paper introduces the consolidating technique for the subgrade of the existing railway with full-face fan shaped grouting.Four diaphragm walls were constructed surrounding the consolidation area so as to form a sealed box structure to insulate the water,where the adequate grouting was implemented in order to ensure the grouting's quality.The grouting materials are selected further to calculation for the consolidated soil and the on site geotechnical condition.During the whole construction procedure,the grouting pressure and grouting quality are controlled dually,and the sensitive settlements are monitored continually.The experience comes from this project will be an important reference for similar consolidation project for the existing railway's subgrade under complex urban environment.
The Hong Kong airport express rail line was built on the filling subgrade.The rail line under crossing existing airport express rail line is the critical work of the whole project of Hong Kong,Zhuhai and Macau Bridge.This paper introduces the consolidating technique for the subgrade of the existing railway with full-face fan shaped grouting.Four diaphragm walls were constructed surrounding the consolidation area so as to form a sealed box structure to insulate the water,where the adequate grouting was implemented in order to ensure the grouting's quality.The grouting materials are selected further to calculation for the consolidated soil and the on site geotechnical condition.During the whole construction procedure,the grouting pressure and grouting quality are controlled dually,and the sensitive settlements are monitored continually.The experience comes from this project will be an important reference for similar consolidation project for the existing railway's subgrade under complex urban environment.
引文
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[2]杨燕.厦门双涵路下穿铁路顶进框架桥的施工技术[J].工程建设与档案,2005.09.12.
[3]霍军帅,王炳龙,周顺华.地铁盾构隧道下穿城际铁路地基加固方案安全性分析[J].中国铁道科学,2010.12.30.
[4]吕续臣,于立俊.既有铁路路基注浆加固技术[J].铁道建筑,2006(4):39-41.
[5]General Specification for Civil Engineering Works Vol.l.Hong Kong Government[S].1992.
[6]R.J.Sewell&P.A.Kirk.Geology of Tung Chung and Northshore Lantau Island.CEDD of Hong Kong[S].2002.
[7]Chasco F D A R,Meneses A S,Cobo E P.System for Construction of a Railway Underpass[J].Practice Periodical on Structural Design&Construction,2010,16(2):82-88.
[8]Cassani G,Bellocchio A,Nardacci L.Ground Improvement Operations for the Construction of the"Via Gramsci Railway Underpass"[C].Geo Support 2004:Innovation and Cooperation in the Geo-Industry.2014.