文档介绍：上海交通大学
硕士学位论文
双圆盾构隧道地表沉降分析
姓名:陈昊
申请学位级别:硕士
专业:岩土工程
指导教师:夏小和
20070101
上海交通大学硕士学位论文中文摘要
双圆盾构隧道地表沉降研究
摘要
进入二十一世纪,随着城市化进程的加快,地下空间的开发在城
市和人类社会的发展中起着越来越重要的作用。双圆盾构隧道以其节
省地下空间,使地下空间的规划更加灵活等优势必将在地下空间的开
发中得到越来越广泛的应用。然而,双圆盾构掘进与圆形盾构一样会
引起周围土体产生位移,特别是地表沉降,势必会影响地面建筑和地
下已有管线和构筑物的安全。为了对地面建筑和地下管线采取针对性
的保护措施,必须要了解土体位移特性和大小,确定土体位移特性和
大小一直是所有盾构隧道施工的重要内容。
本文首先基于双圆盾构隧道的施工特点,通过计算圆形盾构的土
体地表沉降,运用土体位移叠加法,研究了双圆盾构隧道引起的土体
地表沉降的特性,建立了双圆盾构隧道直径、埋深和地层损失等因素
与土体地表沉降的关系。结果表明:双圆盾构隧道的地表沉降槽的形
态与圆形盾构隧道相似;双圆盾构隧道的地表沉降量大,影响范围广;
双圆盾构隧道的地表沉降与埋深和直径之比有关。
然后以上海轨道交通杨浦线(M8 线)为例,对双圆盾构施工过
程进行了有限元数值模拟,分析了隧道的地表沉降,并与现场实测数
据进行比较。通过不同有限元软件模拟同一工况(黄兴绿地站~翔殷
路站 75 环附近),比较四种主流有限元软件(包括 PLAXIS、ABAQUS、
MARC、ANSYS)在分析双圆盾构隧道地表沉降的差别,为计算双圆盾
构隧道地表沉降提供比较好的有限元程序。

关键词:双圆盾构,隧道,地表沉降,数值分析,有限元法
I
上海交通大学硕士学位论文 Abstract
Analysis of Surface Settlement for
Double-O-Tube Shield Tunnel

ABSTRACT

The development of underground space play a more and more
important role in the development of cities as well as societies with the
acceleration of urbanization in the 21st century. The DOT shield tunnel
will e more and more popular because of its virtues such as saving
underground space, making the planning of the underground space more
flexible and so on. However, the same as single-circle shield, DOT shield
tunnel construction will also lead to surface settlement which will have
negative influence on surrounding confirming the characters
and degree of soil surface settlement is quite an important role.
Based on the characteristics of the DOT shield tunnel construction,
the soil surface settlement was studied using the method of the
displacement overlapping. The relationship between the soil surface
settlement and the tunnel depth, the tunnel diameter and the gap
parameter was also derived. It is shown that the soil surface settlement
curve of DOT shield tunnel is similar with that of circle tunnel; the soil
surface settlement and the width of the