Spatial Variability of Grouting Layer of Shield Tunnel and Its Effect on Ground Settlement

被引：6
|
作者：
Wang, Zhongzheng [1 ]
Jin, Dalong [2 ,3 ]
Shi, Chenghua [1 ]
机构：
[1] Cent South Univ, Sch Civil Engn, Changsha 410083, Peoples R China
[2] Beijing Jiaotong Univ, Sch Civil Engn, Beijing 100044, Peoples R China
[3] Natl Univ Singapore, Dept Civil & Environm Engn, Singapore 119077, Singapore
来源：
APPLIED SCIENCES-BASEL | 2020年 / 10卷 / 14期
基金：
中国国家自然科学基金;
关键词：
random finite element; grouting-layer thickness; ground-surface settlement; statistical analysis; TWIN TUNNELS; CONSTRUCTION; PREDICTION; MOVEMENTS; DISPLACEMENT; SIMULATION; DRIVEN;
D O I：
10.3390/app10145002
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
This study aims to investigate the effect of the spatial variability of grouting-layer thickness on ground-surface settlement caused by shield tunneling and to provide a rational prediction method. The spatial characteristics of grouting layers were obtained based on statistical analysis. The random finite element method was used to study the effect of spatial variability of different parameters on ground-surface settlement. Simulation results indicate that the spatial variability of the grouting layer has a negative impact on ground settlement. The surface settlement will be underestimated without considering the spatial characteristics of the grouting layer. Thus, a reliable prediction approach of the maximum ground settlement was proposed to control the construction quality.
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收藏
页数：14
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