袖阀管注浆帷幕在地铁周边建筑物保护中的应用
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摘要
在如火如荼的城市地铁建设过程中,城市既有构筑物不可避免地会与隧道结构近距离接触,致使隧道施工对周边环境产生各种消极影响。开挖步序、爆破震动、支护强度、地下水等因素相互作用,使地面及周边构筑物产生沉降。文章以深圳某地铁车站施工为背景,介绍了袖阀帷幕注浆的施工要点,分析了袖阀管注浆帷幕在地铁车站暗挖施工中对周边构筑物的保护作用,并利用有限元软件ANSYS进行了效果模拟。分析结果证明,帷幕注浆对保证隧道近距离施工中的结构安全和控制地表沉降是十分有效的。
Based on the construction of a subway station in Shenzhen,the paper analyses the protection effects of sleeve-valve pipe grouting curtain on the surrounding buildings during the underground construction of the subway station,and briefly introduces the implementation scheme of sleeve-valve pipe grouting curtain.Simulation by finite element software ANSYS was carried out,results indicated that curtain grouting was efficient to ensure the structural safety of buildings and to control the surface subsidence during the nearby tunnel construction.
Based on the construction of a subway station in Shenzhen,the paper analyses the protection effects of sleeve-valve pipe grouting curtain on the surrounding buildings during the underground construction of the subway station,and briefly introduces the implementation scheme of sleeve-valve pipe grouting curtain.Simulation by finite element software ANSYS was carried out,results indicated that curtain grouting was efficient to ensure the structural safety of buildings and to control the surface subsidence during the nearby tunnel construction.
引文
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[2]孙毅,金涛,陈延.ANSYS在桩土共同作用分析中的应用[J].苏州城建环保学院学报,2002,15(4):13~17Sun Yi,Jin Tao,Chen Yan.Application of ANSYS in the Analysis of Interaction of Cap,Pile and Soil[J].Journal of Suzhou Insti-tute of Urban Construction and Environmental Protection,2002,15(4):13~17
[3]陈波,吕西林,李培振,陈跃庆.均匀土-桩基-结构相互作用体系的计算分析[J].地震工程与工程振动,2002,22(3):91~99Chen Bo,Lv Xilin,Li Peizhen,Chen Yueqing.Computational Analysis of Dynamic Homogeneous Soil-Pile-Structure Interaction[J].Earthquake Engineering and Engineering Vibration,2002,22(3):91~99
[4]朱逢斌.地铁隧道开挖对原有桩基工作性状的影响研究[D].南京:南京林业大学,2007Zhu Fengbin.Study on the Impact of Tunnelling on the Behaviors of Adjancent Existing Piles[D].Nanjing:Nanjing Forestry Uni-versity,2007
[5]吴波.复杂条件下城市地铁隧道施工地表沉降研究[D].成都:西南交通大学,2003Wu Bo.Study of Ground Subsidence Induced by Urban Subway under Complicated Conditions[D].Chengdu:Southwest JiaotongUniversity,2003
[6]张民庆,彭峰.地下工程注浆技术[M].北京:地质出版社,2008Zhang Minqing,Peng Feng.Grouting Technology for Underground Engineering[M].Beijing:Geological Publishing House,2008
[7]张民庆,汪玉华,郭小华.以太广场沉降分析与复合式截水帷幕施工技术[J].岩土力学与工程学报,2004,(15):2647~2651Zhang Minqing,Wang Yuhua,Guo Xiaohua.Subsidence Analysis and Construction Technique of Complex Cut Water Curtain Con-struction of Yitai Plaza[J].Chinese Journal of Rock Mechanics and Engineering,2004,(15):2647~2651
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