|
|
|
| Analysis of Impact of Shield Tunneling on Displacement of Existed Bridge Foundation |
| WANG Fei，ZHUO Yi |
| The Third Railway Survey and Design Institute Group Corporation，Tianjin 300142，China |
|
|
|
|
Abstract Research purposes:The shield tunneling has the complicated impact on surrounding soil and existed structures，and analysis of the impact of the shield tunneling on the surrounding bridge foundation has significant engineering value and research meaning． Taking a tunnel excavation project as the background，a 3D finite element model is established by using ABAQUS to simulate the whole shield tunnelling process on considering the nonlinear characteristics of the soil－structure，and the displacement laws of the bridge abutment and pile foundation in the course of the shield tunneling are obtained．
Research conclusions:The results show that the soil in the place ahead rise to the maximum volume of 4.287 mm under the effect of excavation pressure of the working face，and the soils above and at back of the shield settle with the maximum settlement volume of 6.651 mm under joint effects of the soil loss，stress release and gap of shield end caused by the tunneling．Furthermore，the vertical，transverse and longitudinal displacements of bridge abutment while tunneling can not be ignored． The impact of the base displacement of the abutment should be considered while analyzing the bridge superstructure．
|
|
Received: 12 April 2011
|
|
|
|
|
|
［1］ 李林．盾构施工地层形变及盾构穿越桩群的三维数值模拟及试验研究［D］．天津: 天津大学，2008．
Li Lin． The 3D FEM Simulation and Experimental Research on Ground Deformation and Piles by Shield Driven［D］．Tianjin: Tianjin University，2008．
［2］ 汪玉华，李海民，王立军．盾构法施工引起的地层变位分析［J］． 铁道工程学报，2008(11) :45－48．
Wang Yuhua，Li Haimin，Wang Lijun． Analyses of the Displacement Caused by Shield Construction ［J］． Journal of Railway Engineering Society，2008(11) : 45－48．
［3］ 张庆贺，朱忠隆，杨俊龙，等． 盾构推进引起土体扰动理论分析及试验研究［J］．岩石力学与工程学报，1999(6) : 699－703．
Zhang Qinghe， Zhu Zhonglong， Yang Junlong， etc． Theory Analysis And Testing Study of Soil Disturbance Caused By Shield － Driven，1999(6) : 699－703．
［4］ 易宏伟，孙钧． 盾构施工对软粘土的扰动机理分析［J］．同济大学学报，2000(3) :278－281．
YI Hongwei， Sun Jun． Mechanism Analysis of Disturbance Caused by Shield Tunnelling on Soft Clays ［J］． Journal of Tongji University，2000(3) :278－281．
［5］ 李永盛，黄海鹰． 盾构推进对相邻桩体力学影响的实用计算方法［J］． 同济大学学报，1997(3) :274－280．
Li Yongsheng， Huang Haiying． Computation of Mechanical Effects on Adjacent Piles by Shield Excavation［J］． Journal of Tongji University，1997(3) : 274－280．
［6］ 蒋洪胜，侯学渊． 盾构掘进对隧道周围土层扰动的理论与实测分析［J］． 岩石力学与工程学报，2003(9) :1514－1520．
Jiang Hongsheng， Hou Xueyuan． Theoretical Study And Analysis of Site Observation on The Influence of Shield Excavation on Soft Clays Around Tunnel［J］． Chinese Journal of Rock Mechanics and Engineering， 2003(9) : 1514－1520．
［7］ 王菲． 地基土—高层建筑相互作用的动态子结构法［D］． 天津: 天津大学，2010．
Wang Fei． Dynamic Substructure Method for Soil － Multistory Buildings Interaction System［D］．Tianjin: Tianjin University，2010．
［8］ R． B． Peck．Deep Excavations and Tunneling in Soft Ground，State of the Art Report． Proceeding of 7th International Conference on Soil Mechanics．and Foundation Engineering［C］，Mexico City，1969: 225－290．
［9］ 费康，张建伟． ABAQUS 在岩土工程中的应用［M］． 北京: 中国水利水电出版社，2010．
Fei Kang，Zhang Jianwei． Applications of ABAQUS in Soil Engineering ［M］． Beijing: Water Publication of China，2010．
［10］ 龚晓南． 土塑性力学［M］． 杭州: 浙江大学出版社，1999．
Gong Xiaonan． Soil Plasticity ［M］． HangZhou: Zhejiang University Press，1999．
［11］ 毕继红，王晖． 工程弹塑性力学［M］． 天津: 天津大学出版社，2003．
Bi Jihong， Wang Hui． Engineering Elastic － plastic Mechanics ［M］． Tianjin: Tianjin University Press， 2003．
|
|
|
|
2011, Vol. 28 
