Three-dimensional numerical simulation of tunnelling effects on an existing pile

被引：0
|
作者：
Lee, G. T. K. [1 ]
Ng, C. W. W. [1 ]
机构：
[1] Hong Kong Univ Sci & Technol, Hong Kong, Hong Kong, Peoples R China
来源：
GEOTECHNICAL ASPECTS OF UNDERGROUND CONSTRUCTION IN SOFT GROUND | 2006年
关键词：
D O I：
暂无
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
In this paper, a three-dimensional elasto-plastic numerical simulation was conducted to investigate the effects of an advancing open face tunnel excavation on an existing loaded pile. The computed results are compared with measurements from a centrifuge model test. A significant zone of influence can be identified one tunnel diameter ahead and one behind the tunnel excavation face. Due to an additional settlement of the pile induced due to tunnelling, the soil resistance factor of safety (FOS) for the pile can be regarded as decreasing from 3.0 to 1.5. However, the tunnel excavation did not significantly affect the existing bending moment and axial load distributions within the pile.
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页码：139 / +
页数：2
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