1、 *地铁 3 号线侯家塘站基坑工程设计 摘要 *地铁 3 号线全长 41.4 公里，设 28 座车站。侯家塘站位于贺龙体育馆前方，是* 地铁 1 号线和 3 号线的换乘站。本设计根据相关规范，进行了地铁车站结构设计、基坑 支护方案设计、基坑支护结构设计计算、基坑降水方案设计、基坑监测方案设计以及施 工组织设计。最终将本车站设计为三层三跨岛式框架结构，基坑支护形式采用地下连续 墙，施工方案采用明挖法施工，降水方案采用管井井点降水。在施工的全过程中进行监 控量测，以确保施工安全。 关键词：基坑工程；地下连续墙；明挖法；管井 THE DESIGN OF CHANGSHA METRO LINE 3 H
2、OU JIATANG STATION FOUNDATION PIT ENGINEERING ABSTRACT Changsha Metro Line 3, a total length of 41.4 kilometers, set up 28 stations.Hou Jiatang station is in front of the He Long gym square,is the transfer station of Changsha Metro Line 1 and line 3.According to the relevant regulations,the design c
3、onsist of the subway station structure design, design of foundation pit supporting scheme, foundation pit supporting structure design calculation, design of dewatering in foundation pit, foundation pit monitoring program design and construction organization design. Eventually this station designed a
4、s a three-tiered three-span island-type framed structures, foundation pit supporting forms using diaphragm walls, construction program using open excavation construction, precipitation scheme of dewatering using the tube well. Monitoring and measuring in construction process to ensure safety. Key words: Foundation pit engineering；Diaphragm walls; Open excavation construction； Tube well 目录 第一章 概述 1 1.1 设计依据 . 1 1.2 工程概况 . 1 1.3 工程地质条件 . 2 1.3.1 人工填土层 (Q4ml) 2 1.3.2 中更新统冲积层（Q2al ） 3
