| 新建地铁车站近距离穿越既有地铁隧道的变形控制 |
| |
| 引用本文： | 陈孟乔,杨广武.新建地铁车站近距离穿越既有地铁隧道的变形控制[J].中国铁道科学,2011,32(4). |
| |
| 作者姓名： | 陈孟乔 杨广武 |
| |
| 作者单位： | 1. 北京交通大学土木建筑工程学院,北京,100044
2. 北京交通大学土木建筑工程学院,北京100044;北京市重大项目建设指挥部办公室,北京100029 |
| |
| 摘 要： | 以机场线东直门站上跨下穿既有地铁13号线东直门站站后折返线工程为背景,研究新建地铁车站近距离穿越既有地铁隧道时既有地铁结构变形控制的标准及技术。施工前对既有地铁结构进行检测加固。根据检测评估、模拟计算和安全检算等结果制定既有地铁结构变形控制标准,并将沉降控制值按关键施工工序进行分解。施工过程中,采用加垫方法和PLC液压同步控制顶升技术等主动控制沉降。监测数据表明:隧道结构与轨道结构保持密贴;线路的轨距、水平、变形缝开合度均未超出控制值;开挖中导洞阶段及盖挖法施作下穿结构边墙和底板阶段既有地铁结构沉降占总沉降的50%左右,是施工控制的关键阶段;变形缝差异沉降超出控制值,是施工控制的重点位置;变形缝附近沉降、差异沉降等受环境温度影响较大,是监控的重点区域。
|
| 关 键 词： | 城市轨道交通 地铁车站 穿越施工 变形控制 顶升技术 |
Deformation Control of a Newly-Built Subway Station Crossing the Adjacent Existing Subway Tunnel |
| |
| CHEN Mengqiao,YANG Guangwu.Deformation Control of a Newly-Built Subway Station Crossing the Adjacent Existing Subway Tunnel[J].China Railway Science,2011,32(4). |
| |
| Authors: | CHEN Mengqiao YANG Guangwu |
| |
| Institution: | CHEN Mengqiao1,YANG Guangwu1,2(1.School of Civil Engineering,Beijing Jiaotong University,Beijing 100044,China,2.Beijing Major Projects Construction Headquarters Office,Beijing 100029,China) |
| |
| Abstract: | Based on the case project of Dongzhimen Station of the Airport Line,which cutting over and crossing under the back-turning line behind Dongzhimen Station of the existing metro Line 13,the deformation control standard and techniques of newly-built subway station crossing the adjacent existing subway tunnel were studied.Before construction,the existing subway structure was measured and reinforced.The standard for the deformation control of existing subway structure was worked out according to the results of d... |
| |
| Keywords: | Urban rail transit Subway station Crossing construction Deformation control Lift-up technique |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
