ISSN 2096-4498 CN 44-1745/U
隧道建设(中英文) ›› 2017, Vol. 37 ›› Issue (4): 428-434.DOI: 10.3973/j.issn.1672-741X.2017.04.007
• 研究与探索 • 上一篇 下一篇
史继尧, 王玥
收稿日期:
修回日期:
出版日期:
发布日期:
作者简介:
SHI Jiyao, WANG Yue
Received:
Revised:
Online:
Published:
摘要:
在软岩大断面隧道施工过程中,围岩稳定性控制难度很大。依托宝兰客专古城岭隧道的勘察设计资料、施工工艺和监测数据,建立符合工程实际的基本数值模型,分析软岩大断面隧道的变形特点,揭示仰拱步距和台阶长度对初期支护变形的影响规律。根据模拟试验结果指导古城岭隧道大变形区段施工,将初期支护累计变形减小了70%。
关键词: 软岩大断面隧道, 仰拱步距, 台阶长度, 数值模拟, 初期支护变形, 结构内力, 围岩稳定性
Abstract:
The control of stability of surrounding rocks is difficult during construction of large crosssection soft rock tunnel. A numerical model of Guchengling Tunnel on BaojiLanzhou Passengerdedicated Railway is established based on surveying and design data, construction technology and monitoring data. The deformation characteristics of large crosssection soft rock tunnels are analyzed and the influence of invert arch step distance and bench length on stability of large crosssection soft rock tunnels is revealed. The numerical test results are regarded as guidance for construction of large deformation section of Guchengling Tunnel, the accumulated deformation of primary support has been reduced by 70%.
Key words: large crosssection soft rock tunnel, step distance of invert arch, bench length, numerical simulation, primary support deformation, internal force of structure, stability of surrounding rock
中图分类号:
U 45
史继尧, 王玥. 仰拱步距和台阶长度对软岩大断面隧道稳定性影响分析[J]. 隧道建设, 2017, 37(4): 428-434.
SHI Jiyao, WANG Yue. Analysis of Influence of Invert Arch Step Distance and Bench Length on Stability of Large Crosssection Soft Rock Tunnels[J]. Tunnel Construction, 2017, 37(4): 428-434.
0 / / 推荐
导出引用管理器 EndNote|Ris|BibTeX
链接本文: http://www.suidaojs.com/CN/10.3973/j.issn.1672-741X.2017.04.007
http://www.suidaojs.com/CN/Y2017/V37/I4/428