Evaluation of impending collapse in circular tunnels by analytical and numerical approaches

被引：119
|
作者：
Fraldi, M. [1 ]
Guarracino, F. [1 ]
机构：
[1] Univ Naples Federico 2, Dipartimento Ingn Strutturale, Naples, Italy
来源：
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY | 2011年 / 26卷 / 04期
关键词：
Circular tunnels; Impending collapse; Plasticity; Limit analysis; Numerical analysis; MECHANISMS; STRENGTH;
D O I：
10.1016/j.tust.2011.03.003
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
On the basis of a straightforward analytical approach which has been recently proposed by the present authors, a comparison with numerical procedures to predict plastic collapse in circular rock tunnels is reported. In fact, numerical modeling of the evolution of progressive failure leading to collapse in tunnels is a quite complicated matter and requires great care in modeling the problem and interpretating the results. In order to provide a guide to engineers facing rock limit state problems, a few examples by means of three commercial packages are presented, discussed in details and confronted with the analytical results. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码：507 / 516
页数：10
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