| 软弱围岩隧道施工全过程非线性有限元分析 |
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| 引用本文： | 周太全,华渊,连俊英,朱赞成,汪仁和.软弱围岩隧道施工全过程非线性有限元分析[J].岩土力学,2004,25(Z2):338-342. |
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| 作者姓名： | 周太全 华渊 连俊英 朱赞成 汪仁和 |
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| 作者单位： | 1. 江南大学,土木工程系,江苏,无锡,214063
2. 安徽理工大学,土木工程系,安微,淮南,232001 |
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| 摘 要： | 结合赣州-龙岩铁路某单线隧道软弱围岩地质情况,采用非线性有限元法对软弱围岩条件下的铁路隧道湿喷纤维混凝土支护结构施工过程进行了数值模拟,分析了围岩和支护结构体的非线性力学行为的应力场分布、位移场,围岩塑性区分布特征,指出台阶步开挖时拱顶下沉、底板上鼓、墙腰收缩的主要控制因素.
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| 关 键 词： | 湿喷聚丙烯纤维混凝土 隧道 围岩 塑性区 稳定性 非线性有限元 |
| 文章编号： | 1000-7598-(2004)增-0338-04 |
| 修稿时间： | 2004年5月8日 |
Nonlinear finite element analysis for railway tunnel construction process within soft and weak rock |
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| ZHOU Tai-quan,HUA Yuan,LIAN Jun-ying,ZHU Zan-cheng,WANG Ren-he.Nonlinear finite element analysis for railway tunnel construction process within soft and weak rock[J].Rock and Soil Mechanics,2004,25(Z2):338-342. |
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| Authors: | ZHOU Tai-quan HUA Yuan LIAN Jun-ying ZHU Zan-cheng WANG Ren-he |
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| Institution: | ZHOU Tai-quan1,HUA Yuan1,LIAN Jun-ying1,ZHU Zan-cheng1,WANG Ren-he2 |
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| Abstract: | To assure the safety of the new type lining structure for railway tunnel, the nonlinear finite element analysis is performed on the tunnel lining structure construction process using the wet-sprayed polypropylene fiber reinforced concrete within soft and weak rock mass. As a case for study, the Ganzhou-Longyan railway single track railway tunnel with certain geography characteristic is studied. The rock mass and the lining structure stress field distribution, displacement field distribution, the rock mass plastic region distribution are studied with the numerical analysis. The dominant factor for controlling the arch top displacement downward, the bottom floor displacement upper wards, the middle wall waist displacement inwards during the step by step excavation is analyzed. |
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| Keywords: | wet-sprayed polypropylene fiber reinforced concrete tunnel rock mass plastic zone stability nonlinear finite element |
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