浅埋大跨暗挖车站快速施工技术综合运用.docVIP

浅埋大跨暗挖车站快速施工技术综合运用 　　摘要：目前城市地铁发展很快，而启动地铁建设的城市地面交通已处于相对饱和阶段，考虑到地铁明挖施工需占用市政道路，增加交通压力，在有条件的情况下地铁暗挖施工已逐渐成为趋势，越来越多。就暗挖地铁施工而言,施工秩序和施工环境对施工技术发挥的制约往往是决定性的，总结暗挖地铁车站快速施工的经验,就总结和研究资料来看,以往对单项施工技术的开发己达到相当的深度,而对施工管理和施工环境控制及其综合应用相对总结不够。在地铁暗挖各种受约束的环境下合理组织施工秩序、优化施工环境并综合应用，对促进地铁暗挖车站快速施工更具成效。本文以大连地铁兴工街站为背景，针对暗挖车站快速施工技术的综合运用予以解析。 　　关键词： 施工环境；暗挖车站 　　Abstract: the currently urban subway development soon, and start the subway construction of urban ground transportation has relative saturation stage, considering the subway open cut construction must take up the municipal roads, increase traffic pressure, in the case of conditional underground subway construction has gradually become a trend, more and more. Construction order for underground subway construction, and construction environment on the construction technology of restriction is often decisive, sum up the experience of rapid construction of the underground subway station, summary and research materials, in the past to individual development of construction technology has achieved considerable depth, and control of construction management and construction environment and the integrated application of relative conclusion is not enough. Under the environment of the subway underground running various constrained reasonable organization construction order and optimize the environment of construction and comprehensive application, to promote the fast construction of subways in bijing more productive. Dalian XingGongJie subway station as background, this paper aimed at bijing rapid construction technology integrated use of parsing. 　　Key words: construction environment; bijing 　　中图分类号：TU74文献标识码：A文章编号：2095-2104(2013) 　　 　　一、概况 　　大连地铁一期工程203标兴工街站位于西安路与兴工街交叉口处，西安路正下方，呈南北向布置，车站总长208.3m。车站设计为单拱双层结构，12m岛式站台，采用双侧壁导坑+台阶法暗挖施工，复合式衬砌结构。车站标准断面开挖宽度21.2m（大拱脚处24.34m）、高度18.16m，隧道顶部埋深约7.1～11.1米。车站直墙段（纵梁下7.81m高）设置2道锚索，锚索长12m，第一道位于底纵梁下0.9m，第二道位于第一道下3m，锚索水平向间距为1.5m，预加应力300KN。附属结构包括：5个出入口通道、2组风道。兴工街站总体布置如图1、图2所示。 　　 　　图1兴工街站总体平面示意图图2兴工街站总体立体示意图