盾构掘进对周围土体力学性质的影响.pdf

文档介绍：第 22 卷第 7 期岩石力学与工程学报 22(7):1174~1179
2003 年 7 月 Chinese Journal of Rock Mechanics and Engineering July,2003



盾构掘进对周围土体力学性质的影响*

徐永福 1 陈建山 2 傅德明 3
(1 上海交通大学建筑工程与力学学院上海 200030) (2 海沧建设管理中心厦门 361026)
(3 上海隧道工程股份有限公司上海 200233)

摘要通过盾构施工的现场监测,分析了盾构掘进对周围土体的影响程度;根据土体应力状态变化分析了土体的
扰动程度,并提出了应力扰动度的定义,估算了土体孔隙水压力引起土体不排水强度的降低程度;用室内试验方
法研究了土体应力状态变化对其力学性质的影响。
关键词隧道工程,盾构,应力扰动度,强度
分类号 U 文献标识码 A 文章编号 1000-6915(2003)07-1174-06

EFFECT OF SHIELD TUNNELING ON MECHANICAL
PROPERTIES OF SOILS

Xu Yongfu1,Chen Jianshan2,Fu Deming3
(1College of Civil Engineering and Mechanics,Shanghai Jiaotong University, Shanghai 200030 China)
(2Haicang Construction Managing Centre, Xiamen 361026 China)
(3Shanghai Research Institute of Tunnel Construction Technique, Shanghai 200233 China)

Abstract The influence of shield tunneling on surround soils is studied through the monitoring in situ. The soil
disturbance is analysed by variation of the stress state due to shield tunneling,and the definition of the stress
disturbance degree is presented. The mechanism of the ground surface settlement is also studied. The statistical
relationship is proposed between mechanical properties of soils and the stress disturbance degree.
Key words tunneling engineering,shield,stress disturbance degree,strength

钢筋混凝土单层衬砌结构,衬砌内径为 m,外
1 前言径为 m,衬砌厚