不同盾构施工条件下产生地表沉降分析
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- 英文论文题名：Analysis of Surface Subsidence Caused by Shield Construction
- 论文作者：李兵 ; 嵇凤颖
- 英文论文作者：Li Bing ; Ji Fengying ; School of Civil Engineering ; Shenyang Jianzhu University
- 年：2016
- 作者机构：沈阳建筑大学土木工程学院;
- 论文关键词：盾构施工 ; 地表沉降 ; 施工条件 ; 影响因素
- 英文论文关键词：shield construction ; ground surface settlement ; construction condition ; influence factor
- 会议召开时间：2016-10-27
- 会议录名称：第九届全国防震减灾工程学术研讨会论文集
- 语种：中文
- 分类号：P642.26;U455.43
- 学会代码：OGTY
- 会议名称：第九届全国防震减灾工程学术研讨会
- 会议地点：中国安徽合肥
- 主办单位：中国土木工程学会、中国工程院土木、水利与建筑工程学部、中国土木工程学会防震减灾工程技术推广委员会、合肥工业大学、安徽省住房和城乡建设厅
- 学会名称：中国土木工程学会
- 页数：6
- 文件大小：405k
- 原文格式：O
- 会议级别：全国
摘要
使用Midas GTS三维岩土分析软件对沈阳地铁某双线盾构区间进行模拟分析。并使用实测值和Peck经验公式对分析成果进行了验证,确定Midas GTS可以正确地进行模拟分析。描绘了双线盾构施工过程地表沉降的变化过程,与单线不同,沉降量最大值的位置出现在偏左线位置,而不是两隧道轴心连线的中点。模拟出不同覆土厚度、不同土体弹性模量、不同管片材料情况下,所产生的地表沉降变化。为双线地铁盾构工程的设计和施工提供一定参考。研究结果:①随着覆土厚度的增加6m时,地表沉降减小了9.5mm。覆土厚度很小时,地面沉降会很大,甚至会出现隆起。②土体弹性模量由25MPa逐渐增大到200MPa时,地面沉降值的减小量快速增长。当弹性模量达到100MPa以上时,地表外围出现了隆起现象。③管片材料的弹性模量由原模型中的34.5GPa逐渐增大到35GPa、35.5GPa、37GPa、39GPa时,地表产生的沉陷量逐渐下降。
Simulation and analysis of the double line shield section of Shenyang Metro by using the finite element analysis software named Midas — GTS.Using the measured value and the Peck empirical formula to verify the analysis results,it is confirmed that the GTS Midas can be correctly simulated and analyzed.The change process of ground surface settlement during the construction of double line shield was described.Different from the single line,the position of the maximum value of the settlement appears in the position of the left line,rather than the midpoint of the two tunnel axis.Study on the influence of different soil thickness,different elastic modulus of soil and different segment material on ground settlement.Research results:(1) With the increase of the soil thickness,the surface subsidence decreases obviously.The thickness of covering soil is shallow,ground subsidence will produce large displacement.(2) When the elastic modulus of soil is increasing,the ground settlement is smaller and smaller.(3)The elastic modulus of segment material increases,the surface subsidence has gradually decreased.
Simulation and analysis of the double line shield section of Shenyang Metro by using the finite element analysis software named Midas — GTS.Using the measured value and the Peck empirical formula to verify the analysis results,it is confirmed that the GTS Midas can be correctly simulated and analyzed.The change process of ground surface settlement during the construction of double line shield was described.Different from the single line,the position of the maximum value of the settlement appears in the position of the left line,rather than the midpoint of the two tunnel axis.Study on the influence of different soil thickness,different elastic modulus of soil and different segment material on ground settlement.Research results:(1) With the increase of the soil thickness,the surface subsidence decreases obviously.The thickness of covering soil is shallow,ground subsidence will produce large displacement.(2) When the elastic modulus of soil is increasing,the ground settlement is smaller and smaller.(3)The elastic modulus of segment material increases,the surface subsidence has gradually decreased.
引文
[1]于德海,张涛,姜谙男.复杂条件下地铁盾构施工过程的影响因素分析EJ].铁道工程学报,2015,(第5期):86-91(YU De-hai,ZHANG Tao,JIANG An-nan.Analysis of Influencing Factors of Metro Shield Construction under Complicated Conditions[J].JOURNAL OF RAILWAY ENGINEERING SOCIETY,2015,(5)i86-91(in Chinese))
[2]夏洋洋,霍曼琳,夏峰峰.地铁盾构隧道掘进施工过程三维仿真分析EJ].兰州工业学院学报,2015,第22卷(第1期):34-37,67(XIA Yang-yang,HUO Man-linl,XIA Feng-feng.Three Dimensional Simulation of Excavation of Shield Tunnel[J].Journal of Lanzhou Institute of Technology,2015,22(1):34-37,67(in Chinese))
[3]童学军,岳鹏飞,刘重庆.盾构施工引起地表沉降的数值计算与实例分析[J].兰州交通大学学报,2011,第30卷(第1期):86-89(TONG Xue-jun,YUE Peng-fe,LIU Chong-qing.Numerical Calculation and Example Analysis of Ground Settlement Due to Tunnel Shield Construction[J].Journal of Lanzhou Jiaotong University,2011,30(1):86-89(in Chinese))
[4]张海波,殷宗泽,朱俊高,李翠霞.盾构法隧道衬砌施工阶段受力特性的三维有限元模拟[J].岩土力学,2005,第26卷(第6期):990-994(ZHANG Hai-bo,YIN Zong-ze,ZHU Jun-gao,LI Cuixia.Three-dimensional FEM simulation of shield-driven tunnel lining during construction stage[J].Rock and Soil Mechanics,2005,26(6):990-994(in Chinese))
[5]王立忠,吕学金.复变函数分析盾构隧道施工引起的地基变形[J].岩土工程学报,2007,第29卷(第3期):319-327(WANG Li-zhong 1,L(u|¨)Xue-jin.A complex variable solution for different kinds of oval deformation around circular tunnel in an elastic half plane[J].Chinese Journal of Geotechnical Engineering,2007,29(3):319-327(in Chinese))
[6]李庆,杨璐,王场.地铁隧道盾构施工引起地表沉降分析[J].企业技术开发,2011,(第5期):85-87(LI Qing,YANG Lu.WANG Chang.Analysis on ground surface settlement caused by subway shield construction[J].TECHNOLOGICAL DEVELOPMENT OF ENTERPRISE,2011,(5):85-87(in Chinese))
[7]刘银利.黄土地区隧道盾构法施工引起的地表沉降分析[J].地下空间与工程学报,2007,第3卷(第A1期):1224-1227,1231(LIU Yin-li Analysis on Ground Surface Subsidence of Metro Tunnel Induced by Shield Construction in Loess[J].Chinese Journal Underground Space And Engineering,2007,3(A1):1224-1227,1231(in Chinese))
[8]Qian Fanga,Dingli Zhanga,QianQian Lia,Louis Ngai Yuen Wongb.Effects of twin tunnels construction beneath existing shield-driven twin tunnels.Tunnelling and Underground Space Technology,2015(Vol.45),128-137
[9]L.Ran,X.W.Ye,G.Ming,X.B.Dong,Fei Kang.Structural Monitoring of Metro Infrastructure during Shield Tunneling Construction.The Scientific World Journal,2014(Vol.2014)
[10]Jiangfeng Liu,Taiyue Qi,Zhanrui Wu.Analysis of ground movement due to metro station driven with enlarging shield tunnels under building and its parameter sensitivity analysis.Tunnelling and Underground Space Technology incorporating Trenchless Technology Research,2012(Vol.28):287-296
[2]夏洋洋,霍曼琳,夏峰峰.地铁盾构隧道掘进施工过程三维仿真分析EJ].兰州工业学院学报,2015,第22卷(第1期):34-37,67(XIA Yang-yang,HUO Man-linl,XIA Feng-feng.Three Dimensional Simulation of Excavation of Shield Tunnel[J].Journal of Lanzhou Institute of Technology,2015,22(1):34-37,67(in Chinese))
[3]童学军,岳鹏飞,刘重庆.盾构施工引起地表沉降的数值计算与实例分析[J].兰州交通大学学报,2011,第30卷(第1期):86-89(TONG Xue-jun,YUE Peng-fe,LIU Chong-qing.Numerical Calculation and Example Analysis of Ground Settlement Due to Tunnel Shield Construction[J].Journal of Lanzhou Jiaotong University,2011,30(1):86-89(in Chinese))
[4]张海波,殷宗泽,朱俊高,李翠霞.盾构法隧道衬砌施工阶段受力特性的三维有限元模拟[J].岩土力学,2005,第26卷(第6期):990-994(ZHANG Hai-bo,YIN Zong-ze,ZHU Jun-gao,LI Cuixia.Three-dimensional FEM simulation of shield-driven tunnel lining during construction stage[J].Rock and Soil Mechanics,2005,26(6):990-994(in Chinese))
[5]王立忠,吕学金.复变函数分析盾构隧道施工引起的地基变形[J].岩土工程学报,2007,第29卷(第3期):319-327(WANG Li-zhong 1,L(u|¨)Xue-jin.A complex variable solution for different kinds of oval deformation around circular tunnel in an elastic half plane[J].Chinese Journal of Geotechnical Engineering,2007,29(3):319-327(in Chinese))
[6]李庆,杨璐,王场.地铁隧道盾构施工引起地表沉降分析[J].企业技术开发,2011,(第5期):85-87(LI Qing,YANG Lu.WANG Chang.Analysis on ground surface settlement caused by subway shield construction[J].TECHNOLOGICAL DEVELOPMENT OF ENTERPRISE,2011,(5):85-87(in Chinese))
[7]刘银利.黄土地区隧道盾构法施工引起的地表沉降分析[J].地下空间与工程学报,2007,第3卷(第A1期):1224-1227,1231(LIU Yin-li Analysis on Ground Surface Subsidence of Metro Tunnel Induced by Shield Construction in Loess[J].Chinese Journal Underground Space And Engineering,2007,3(A1):1224-1227,1231(in Chinese))
[8]Qian Fanga,Dingli Zhanga,QianQian Lia,Louis Ngai Yuen Wongb.Effects of twin tunnels construction beneath existing shield-driven twin tunnels.Tunnelling and Underground Space Technology,2015(Vol.45),128-137
[9]L.Ran,X.W.Ye,G.Ming,X.B.Dong,Fei Kang.Structural Monitoring of Metro Infrastructure during Shield Tunneling Construction.The Scientific World Journal,2014(Vol.2014)
[10]Jiangfeng Liu,Taiyue Qi,Zhanrui Wu.Analysis of ground movement due to metro station driven with enlarging shield tunnels under building and its parameter sensitivity analysis.Tunnelling and Underground Space Technology incorporating Trenchless Technology Research,2012(Vol.28):287-296
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