Ground surface settlements due to construction of closely-spaced twin tunnels with different geometric arrangements

被引：84
作者：
Fang, Qian [1 ]
Tai, Qimin [1 ]
Zhang, Dingli [1 ]
Wong, Louis Ngai Yuen [2 ]
机构：
[1] Beijing Jiaotong Univ, Educ Minist, Key Lab Urban Underground Engn, Beijing 100044, Peoples R China
[2] Nanyang Technol Univ, Sch Civil & Environm Engn, Singapore 639798, Singapore
来源：
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY | 2016年 / 51卷
关键词：
Twin tunnelling; Settlement; Ground loss; Gaussian function; MOVEMENTS; CLAYS;
D O I：
10.1016/j.tust.2015.10.031
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
This paper examines the ground surface settlement profiles due to the construction of closely-spaced twin tunnels using the shallow tunnelling method. In the concerned zone, where the twin-tunnelling was performed in stacked and offset arrangements, the ground surface settlements of in total 18 cross-sections were continually recorded during construction. To cater for different conditions of the twin tunnels in the concerned zone, partial face, full face and forepoling reinforcement schemes were adopted. The recorded surface settlements and settlement troughs of three typical sections are reported and illustrated. The surface settlement troughs induced by each of the twin tunnels are fitted by the Gaussian function. The parameters that characterize the surface settlement troughs induced by each of the twin tunnels, such as the maximum settlement, percentage of ground loss, trough width and empirical trough width parameter are presented and compared. (C) 2015 Elsevier Ltd. All rights reserved.
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收藏
页码：144 / 151
页数：8
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