[1]陈佳正,汤 华,戴永浩.下穿公路隧道大型三维有限元静力仿真研究[J].湖北工业大学学报,2020,(2):74-77.
　CHEN Jiazheng,TANG Hua,DAI Yonghao.Static simulation of Large Scale Three-dimensional Finite Element for Undercrossing Highway Tunnels[J].,2020,(2):74-77.
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下穿公路隧道大型三维有限元静力仿真研究()
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《湖北工业大学学报》[ISSN:1003-4684/CN:42-1752/Z]

卷:
期数:
2020年第2期
页码:
74-77
栏目:
湖北工业大学学报
出版日期:
2020-04-30

文章信息/Info

Title:
Static simulation of Large Scale Three-dimensional Finite Element for Undercrossing Highway Tunnels
文章编号:
1003-4684(2020)02-0074-04
作者:
陈佳正1;  汤  华2;  戴永浩2
1 湖北工业大学土木建筑与环境学院， 湖北 武汉 430060；
2 中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室， 湖北 武汉 430071
Author(s):
CHEN Jiazheng1; TANG Hua2; DAI Yonghao2
1 School of Civil Engin.,Architecture and Environment,Hubei Univ.of Tech.,Wuhan 430060,China；
2 State Key Laboratory of Geomechanics Mechanics and Engineering,[JZ]Chinese Academy of Sciences, Wuhan 430071,China
关键词:
公路隧道;  近接工程;  三维模拟;  三台阶法;  沉降变形
Keywords:
highway tunnel;  proximity engineering;  three-dimensional simulation;  three-step method;  settlement and deformation WT
分类号:
U455
文献标志码:
A
摘要:
针对公路隧道近距离穿越既有公路、铁路等构筑物和建筑物的工程，研究当前施工工法和支护方案下隧道围岩变形范围和上方既有公路受影响程度，并对既有公路的安全性进行评估，采用大型三维数值模拟方法开展甸头隧道近距离穿越既有公路段的分析，得出采用三台阶掘进能有效控制既有公路的沉降变形，且隧道轴向方向变形差异较小，围岩基本处于受压状态，塑性区集中于两腰部及以下，但衬砌在开挖后受拉应力较大易破坏的结论。
Abstract:
With the development of national highway construction, more and more highways need to pass through densely built areas and dense areas of existing road networks, resulting in a large number of highway tunnels passing through existing highways, railways and other structures and buildings in close proximity. In order to study the deformation range of surrounding rock of the tunnel under the current construction method and supporting scheme and the influence degree of the existing highway above, and to evaluate the safety of the existing highway, the large scale three dimensional numerical simulation method was used to carry out the analysis of Diantou tunnel passing through the existing highway section at short distance. It was concluded that the settlement deformation of the existing highway could be effectively controlled by adopting three-step tunneling. The axial deformation difference of the tunnel was small; the surrounding rock was basically under compression; the plastic zone was concentrated at two waists and below, but the lining was subject to large tensile stress and easy to damage after excavation.

参考文献/References:

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备注/Memo

备注/Memo:
［收稿日期］ 2019-08-07
［基金项目］ 国家自然科学基金（51778609）
［第一作者］ 陈佳正(1994-)， 男， 湖北黄冈人，湖北工业大学硕士研究生，研究方向为复杂地质公路隧道超前预报及方法
更新日期/Last Update: 2020-05-13