邻近建筑物的暗挖隧道施工数值模拟

›› 2009, Vol. 30 ›› Issue (2): 547-552.

邻近建筑物的暗挖隧道施工数值模拟

魏纲¹，裘新谷²，魏新江¹，丁智¹

1. 浙江大学城市学院土木工程系，杭州 310015；2. 杭州市建设委员会，杭州 310006

收稿日期:2006-09-11 出版日期:2009-02-10 发布日期:2011-01-27
作者简介:魏纲，男，1977年生，博士，讲师，主要从事软土地基处理与地下隧道施工对周边环境影响的研究工作。
基金资助:
浙江省科技厅资助项目（No.2006C31064）；浙江省教育厅科研资助项目（No.20070180）。

Numerical simulation of underground excavated tunnel construction of adjacent structure

WEI Gang¹, QIU Xin-Gu², WEI Xin-Jiang¹, DING Zhi¹

1. Department of Civil Engineering, Zhejiang University City College, Hangzhou 310015, China; 2. The Construction Committee of Hangzhou City, Hangzhou 310006, China

Received:2006-09-11 Online:2009-02-10 Published:2011-01-27

摘要/Abstract

摘要：

软土中采用暗挖法开挖隧道往往会引起土体变形，由于城市中暗挖隧道多建在建筑物高度集中的地区，土体变形对邻近既有建筑物的损伤不容忽视。采用二维有限元方法对邻近中、低层建筑物(采用整体基础)工况下的暗挖隧道施工进行了模拟和分析，建筑物长15 m。研究结果表明：建筑物的存在会增大隧道开挖引起的地面沉降和衬砌的受力与变形，同时隧道开挖也会使邻近建筑物产生附加应力和变形。当隧道轴线与建筑物轴线的水平距离 0 m时，建筑物相对安全；当时，建筑物会产生朝向隧道一侧的倾斜。当为2.5～20 m时，产生较大的地面沉降，建筑物的首尾沉降差较大，建筑物较危险；当为30～40 m时，建筑物的存在对隧道施工的影响较小；当 40 m时，建筑物的存在对隧道施工的影响可以忽略不计。由于基础的存在，建筑物的最大弯矩、轴力和剪力的变化量较小，增大量在10 %以内。

关键词: 暗挖隧道, 建筑物, 数值模拟, 地面沉降

Abstract:

Tunnel construction with underground excavated method in soft soil often induces ground deformation. Due to that the city underground excavation tunnel lies in area with dense and intensive buildings, the damage of soil deformation to adjacent structure is noticeable. 2D FEM is adopted to study and simulate the underground excavated tunnel construction of adjacent structure. The building is with length of 15m. It is indicated as follows. Surface settlement together with force and deformation of the lining are increased by the existence of building; simultaneously, additional stress and deformation of adjacent structure are induced during tunnel excavation construction. L is defined as horizontal distance from tunnel axis to building axis. When 0 m, the building is relative secure. When , the building incline to sides of tunnel. When to 20 m, great surface settlement is produced with more settlement difference between building head and tail; and the building is in danger. When to 40 m, the impact of building on the tunnel construction is small. When 40 m, the influence of building on the tunnel construction is negligible. As a result of the foundation, the maximum of bending moment, the axial force and the shearing force vary little; with extends range is less than 10 %.

Key words: underground excavated tunnel, structure, numerical simulation, surface settlement

中图分类号:

U 451

魏纲，裘新谷，魏新江，丁智. 邻近建筑物的暗挖隧道施工数值模拟[J]. , 2009, 30(2): 547-552.

WEI Gang, QIU Xin-Gu, WEI Xin-Jiang, DING Zhi. Numerical simulation of underground excavated tunnel construction of adjacent structure[J]. , 2009, 30(2): 547-552.

参考文献

相关文章 15

[1]	李翻翻, 陈卫忠, 雷江, 于洪丹, 马永尚, . 基于塑性损伤的黏土岩力学特性研究[J]. 岩土力学, 2020, 41(1): 132-140.
[2]	夏坤, 董林, 蒲小武, 李璐, . 黄土塬地震动响应特征分析[J]. 岩土力学, 2020, 41(1): 295-304.
[3]	郭院成, 李明宇, 张艳伟, . 预应力锚杆复合土钉墙支护体系增量解析方法[J]. 岩土力学, 2019, 40(S1): 253-258.
[4]	闫国强, 殷跃平, 黄波林, 张枝华, 代贞伟, . 三峡库区巫山金鸡岭滑坡成因机制与变形特征[J]. 岩土力学, 2019, 40(S1): 329-340.
[5]	刘红岩. 宏细观缺陷对岩体力学特性及边坡稳定影响研究[J]. 岩土力学, 2019, 40(S1): 431-439.
[6]	金爱兵, 刘佳伟, 赵怡晴, 王本鑫, 孙浩, 魏余栋, . 卸荷条件下花岗岩力学特性分析[J]. 岩土力学, 2019, 40(S1): 459-467.
[7]	韩征, 粟滨, 李艳鸽, 王伟, 王卫东, 黄健陵, 陈光齐, . 基于HBP本构模型的泥石流动力过程SPH数值模拟[J]. 岩土力学, 2019, 40(S1): 477-485.
[8]	吴锦亮, 何吉, . 岩质边坡动态开挖模拟的复合单元模型[J]. 岩土力学, 2019, 40(S1): 535-540.
[9]	吴凤元, 樊赟赟, 陈剑平, 李军, . 基于不同侵蚀模型的高速崩滑碎屑流动力过程模拟分析[J]. 岩土力学, 2019, 40(8): 3236-3246.
[10]	孙峰, 薛世峰, 逄铭玉, 唐梅荣, 张翔, 李川, . 基于连续损伤的水平井射孔-近井筒三维破裂模拟[J]. 岩土力学, 2019, 40(8): 3255-3261.
[11]	穆锐, 浦少云, 黄质宏, 李永辉, 郑培鑫, 刘旸, 刘泽, 郑红超, . 土岩组合岩体中抗拔桩极限承载力的确定[J]. 岩土力学, 2019, 40(7): 2825-2837.
[12]	金俊超, 佘成学, 尚朋阳. 基于应变软化指标的岩石非线性蠕变模型[J]. 岩土力学, 2019, 40(6): 2239-2246.
[13]	张聪, 梁经纬, 阳军生, 曹磊, 谢亦朋, 张贵金, . 堤坝脉动注浆浆液扩散机制及应用研究[J]. 岩土力学, 2019, 40(4): 1507-1514.
[14]	严健, 何川, 汪波, 蒙伟, . 高地温对隧道岩爆发生的影响性研究[J]. 岩土力学, 2019, 40(4): 1543-1550.
[15]	李世俊, 马昌慧, 刘应明, 韩玉珍, 张彬, 张嘎, . 离心模型试验与数值模拟相结合研究采空边坡渐进破坏特性[J]. 岩土力学, 2019, 40(4): 1577-1583.

Metrics

Viewed

Full text

Abstract

Cited

Shared

Discussed