杭州粉砂土地基深基坑施工对邻近地铁隧道、车站的影响研究

杭州粉砂土地基深基坑施工对邻近地铁隧道、车站的影响研究 English Version

详细信息

(Zhejiang Province Architectural Design and Research Institute, Hangzhou 310006, China)

摘要: 以杭州七堡控制中心综合体中段北区基坑作为工程背景，采用分层总和法、PLAXIS有限元软件进行粉砂土地基降水和基坑开挖对邻近隧道基础沉降的叠加影响分析，采用整体式双排围护结构控制基坑开挖时的土体变形，提出了围护结构复合刚度的简化计算公式。实践表明复合刚度取值介于等面积和等弯刚度之间，符合工程实际，而分层总和法计算的沉降量远大于实测值，需作折减。
- 粉砂土地基 /
- 盾构隧道 /
- 双排围护结构 /
- 变形控制
Abstract: The researches on the settlement of soil, deformation of retaining wall and environmental impact of deep excavation of Metro Control Center during construction, which is 6~8 m away from the metro tunnel and station, are presented. A series of methods are taken, such as dewatering, water proofing and double-row retaining wall to ensure the safety of the metro tunnel and station. The construction is succeeded with the deformation of metro tunnel in the range of allowable values.
- silty sand /
- shield tunnel /
- double-row retaining wall /
- deformation control

[1]	袁静, 刘兴旺, 陈卫林. 杭州地铁控制中心综合体工程基坑围护设计说明[R]. 杭州: 浙江省建筑设计研究院, 2010. (YUAN Jing, LIU Xing-wang, CHEN Wei-lin. Excavation design of Hangzhou metro control center[R]. Hangzhou: Zhejiang Province Architectural Design and Research Institute, 2010. (in Chinese))
[2]	浙江华东建设工程公司. 七堡车辆段核心区综合体（控制中心）岩土工程勘察报告[R]. 杭州: 浙江华东建设工程公司, 2009. (East China Construction Engineering Corporation of Zhejiang. Geotechnical investigation of Hhangzhou metro control center[R]. Hangzhou: East China Construction Engineering Corporation of Zhejiang, 2009. (in Chinese))
[3]	.DB33/T1008—2000 建筑基坑工程技术规程[S]. 杭州: 浙江省标准设计站, 2000. (DB33/T1008—2000 Code for technique of building foundation excavation engineering[S]. Hangzhou: Zhejiang Province Code Institute, 2000. (in Chinese))
[4]	J10036—2000建筑基坑工程技术规程[S]. 杭州: 浙江省标准设计站, 2000. (J10036—2000 Code for technique of building foundation excavation engineering[S]. Hangzhou: Zhejiang Province Code Institute, 2000. (in Chinese))