叠合初支拱盖嵌入微风化岩的比例对拱盖法施做地下车站的影响探究
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- 英文论文题名：The Exploration of the Affection of the Light Weathered Granite-Embedded Ratio to the Construction of Underground Station by Using Double-Layer Initial Support Arch Method
- 论文作者：王盟 ; 李林 ; 李德才
- 英文论文作者：WANG Meng ; LI Lin ; LI Decai ; China Academy of Railway Science ; China Railway Academy Co. ; Ltd ; China Railway Chengdu Transit Deign Institute Co. ; Ltd
- 年：2016
- 作者机构：中国铁道科学研究院;中国中铁科学研究院;中铁成都轨道交通设计院;
- 论文关键词：拱盖法 ; 浅埋暗挖 ; 有限单元法
- 英文论文关键词：Arch method ; Shallow buried-tunneling method ; Finite element method
- 会议召开时间：2016-10-24
- 会议录名称：2016中国隧道与地下工程大会（CTUC）暨中国土木工程学会隧道及地下工程分会第十九届年会论文集
- 语种：中文
- 分类号：U231.3
- 学会代码：OGTY
- 会议名称：2016中国隧道与地下工程大会（CTUC）暨中国土木工程学会隧道及地下工程分会第十九届年会
- 会议地点：中国四川成都
- 主办单位：中国土木工程学会隧道及地下工程分会
- 学会名称：中国土木工程学会
- 页数：8
- 文件大小：1718k
- 原文格式：O
- 会议级别：全国
摘要
二衬拱盖法施做地下车站技术已经在大连、青岛等岩层"上软下硬"的地区广泛使用,其特点是既能充分发挥岩体自稳定性,又能减少造价,增大作业面积。叠合初支拱盖法是二衬拱盖法的改进。叠合初支拱盖法施做地下车站时,围岩应力状态、车站结构变形与拱盖嵌入微风化岩的比例密切相关。文章依托青岛地铁4号线内蒙古路站的初步设计方案,使用有限元数值方法,以叠合初支拱盖嵌入微风化花岗岩的比例为自变量,探究拱盖的拱脚在不同嵌岩比例下,开挖施工对车站结构与地层的影响。分析结果表明,拱盖嵌入微风化花岗岩的比例与地面最大沉降值、拱顶最大沉降值基本呈线性关系;随着叠合初支拱盖拱脚嵌入微风化花岗岩比例的增加,掌子面围岩应力变化值收敛,车站结构趋于稳定。拱盖嵌入微风化岩体的比例对拱脚水平位移的影响远大于对拱脚竖向位移的影响。
The technology of adding arch method to the construction of underground station has been widely used in Dalian,Qingdao and other region where the hard rock is under the soft rock.Double-layer initial support arch method is another kind of arch method.Using the arch method can not only make full use of the hard rock nearby,but also reduce the total cost and increase the area of operation.When using the arch method,the rock stress and deformation are closely related to the ratio of the arch which is embedded in the weathered granite.The article relying on the initial design of Inner Mongolia Road Station in Qingdao Metro Line 4,using the finite element method,takes the light weathered granite-ratio of arch as independent variable to explore the structural deformation under the different light weathered granite-embedded ratios.The results showed that the light weathered granite-embedded ratio has a linear relationship to the maximum surface subsidence.With the increasing of the light weathered graniteembedded ratio,the stress of the working face convergence,the structure trends to stabilization.
The technology of adding arch method to the construction of underground station has been widely used in Dalian,Qingdao and other region where the hard rock is under the soft rock.Double-layer initial support arch method is another kind of arch method.Using the arch method can not only make full use of the hard rock nearby,but also reduce the total cost and increase the area of operation.When using the arch method,the rock stress and deformation are closely related to the ratio of the arch which is embedded in the weathered granite.The article relying on the initial design of Inner Mongolia Road Station in Qingdao Metro Line 4,using the finite element method,takes the light weathered granite-ratio of arch as independent variable to explore the structural deformation under the different light weathered granite-embedded ratios.The results showed that the light weathered granite-embedded ratio has a linear relationship to the maximum surface subsidence.With the increasing of the light weathered graniteembedded ratio,the stress of the working face convergence,the structure trends to stabilization.
引文
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[2]黄瑞金.地铁浅埋暗挖洞桩法车站扣拱施工技术[J].地下空间与工程学报,2007,3(2):268-271.HUANG Ruijin.PBA Method Applied in the Construction of Arch in Subway Station[J].Chinese Journal of Underground Space and Engineering,2007,3(2):268-271.
[3]钟国.地铁车站的一种新型暗挖施工工法--拱盖法[J].城市轨道交通研究,2012,15(8):145-148.ZHONG Guo.Arch-Cover Method:A New Subsurface Excavation Construction for Metro Stations[J].Urban Mass Transit,2012,15(8):145-148.
[4]吴学锋,土岩复合地层拱盖法施工三维有限元数值模拟[J].城市轨道交通研究,2012,15(8):135-138.WU Xuefeng.Finite Element Method Simulation with Arch Method[J].Urban Rail Transit Research,2012,15(8):135-138.
[5]郑建国,土岩组合地层大跨度浅埋暗挖车站施工环境效应研究[D].青岛:中国海洋大学,博士论文,2011.ZHENG Jianguo.Study on Environmental Effects of Large-span Shallow-subsurface Excavation Station Construction in Soil-rock Assorted Area[D].Qingdao:Ocean University of China,Doctorial Thesis,2011.
[6]纪召启,土岩组合地层拱盖法隧道施工动态风险评估[D].青岛.中国海洋大学.博士论文.2014.JI Zhaoqi.Dynamic risk assessment on arch-cover tunnel construction under the condition of rock-soil stratum[D].Qingdao:Ocean University of China,Doctorial Thesis,2014.
[7]青岛市地铁4号线(一标段)(内海区间~福州路站)岩土工程勘察报告[R].青岛市勘察测绘研究院,2015-12.The Geotechnical Investigation Report of Qingdao subway line 4[R].Qingdao Survey Institute,2015-12.
[8]王梦恕,地下工程浅埋暗挖技术通论[M].合肥:安徽教育出版社,2004.WANG Mengshu.Introduction to Mined Technology of Shallow Underground Engineering[M].Hefei:Anhui Education Publishing House,2004.
[9]王安东.一种新拱盖法——叠合初支拱盖法的特点与应用[J].现代城市轨道交通,2016(1):48-52.WANG Andong.A new kind of arch method——The Double-layer Initial Support Arch Method[J].Modern Urban Rail Transit2016(1):48-52.
[10]青岛地铁2号线第三方监测日报[R].青岛市勘察测绘研究院.The Monitoring Report from the third party for the Qingdao subway line 2[R].Qingdao Survey Institute.