首页 | 本学科首页   官方微博 | 高级检索  
     检索      

浅埋大跨度隧道拆撑对初支安全性影响分析
引用本文:张建国,王明年,罗禄森,吉艳雷.浅埋大跨度隧道拆撑对初支安全性影响分析[J].岩土力学,2009,30(2):497-502.
作者姓名:张建国  王明年  罗禄森  吉艳雷
作者单位:西南交通大学,土木工程学院,成都,610031
摘    要:针对浅埋大跨度隧道拆撑对初期支护安全性影响,对厦门东通道(翔安隧道)陆域CRD法施工段采用现场监测和数值模拟两种方法。对比分析表明,两种方法所得结果吻合良好。研究结果表明,在纵向一次性拆撑长度为10 m的情况下,对拱顶下沉的影响在5 %~10 %左右,初期支护安全系数降低约5 %~15 %,初期支护的安全性受临时支护拆除的影响较小,这为实现隧道的信息化施工提供了依据,也为今后的相关工程积累了经验。

关 键 词:大跨度  拆撑分析  安全性  现场监测  数值模拟  信息化施工
收稿时间:2007-05-15

Analysis of influence of dismantling temporary supports on preliminary lining of large-span shallow tunnel
ZHANG Jian-guo,WANG Ming-nian,LUO Lu-sen,JI Yan-lei.Analysis of influence of dismantling temporary supports on preliminary lining of large-span shallow tunnel[J].Rock and Soil Mechanics,2009,30(2):497-502.
Authors:ZHANG Jian-guo  WANG Ming-nian  LUO Lu-sen  JI Yan-lei
Institution:School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China
Abstract:In view of the influence of dismantling temporary supports of large-span shallow tunnel on the preliminary lining, we have employed two ways, in-situ monitoring and numerical simulation, in the phase of Xiamen East Passageway (Xiang-an tunnel) constructed by CRD method. The results turned out to be perfectly matched by comparison and analysis. The research indicates that when the one-time longitudinal dismantled length is 10 metres, the settlement of vault has a 5 %-10 % drop while the safety factor of preliminary lining is about 5 %-15 % lower. In addition,removing the temporary supports has little impact on the safety of the preliminary lining. As a result, this study provides evidence for information-oriented construction of tunnel as well as experience for the future related projects.
Keywords:large-span  dismantling temporary supports  security  in-situ monitoring  numerical simulation  information-oriented construction
本文献已被 维普 万方数据 等数据库收录!
点击此处可从《岩土力学》浏览原始摘要信息
点击此处可从《岩土力学》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号