合肥地铁深基坑开挖对邻近高速公路沉降的影响
|
摘要
针对合肥地铁深基坑开挖对邻近高速公路沉降的影响,采用MidasGTS有限元数值计算软件进行分析,建立了考虑高速公路及基坑施工过程的三维有限元模型,研究了邻近高速公路在不同开挖阶段的最大沉降变化以及不同开挖阶段高速公路的路面沉降分布规律,研究表明:路面最大沉降位置始终在离基坑最近的一侧路面,最终沉降量为7.77mm,对路面安全没有造成影响;随着开挖的进行,沉降量和沉降影响范围不断增加,但增加速率越来越缓慢;研究所得到结论可用来指导未来的相似工程。
For the deep foundation pit excavation of subway Hefei effect on adjacent highway settlement,by using the finite element method software-MidasGTS,a three-dimensional finite element model considering the motorway as well as the deep excavation process is established to analyze the influence of the deep excavation on adjacent motorway's subsidence.The maximum subsidence of the adjacent motorway and the distribution of the subsidence in different steps are studied.The motorway's maximum subsidence is at the edge of the foundation pit and the maximum subsidence is at 7.77 mm were found.It doesn't damage the motorway's security.The amount and distribution'size of subsidence gradually increases as the excavation process,but the speed of the increases gradually reduce.These conclusions can be used to guide the future similar projects.
For the deep foundation pit excavation of subway Hefei effect on adjacent highway settlement,by using the finite element method software-MidasGTS,a three-dimensional finite element model considering the motorway as well as the deep excavation process is established to analyze the influence of the deep excavation on adjacent motorway's subsidence.The maximum subsidence of the adjacent motorway and the distribution of the subsidence in different steps are studied.The motorway's maximum subsidence is at the edge of the foundation pit and the maximum subsidence is at 7.77 mm were found.It doesn't damage the motorway's security.The amount and distribution'size of subsidence gradually increases as the excavation process,but the speed of the increases gradually reduce.These conclusions can be used to guide the future similar projects.
引文
1 陈滋雄.基坑开挖对邻近建筑物的影响研究[D].重庆:重庆大学,2012.
2 李云安.深基坑工程变形控制优化设计及其有限元数值模拟系统研究[J].岩石力学与工程学报2001(5):421-421.
3 赵延林,高全臣,衡朝阳.基坑开挖对近邻建筑物沉降影响的数值模拟[J].黑龙江科技学院学报2005(3):106-109.
4 Attwell P.B.Soil movement induced by tunneling and their effects or pipelines and structures[J].Black Chapman and Ha11,1986,20~46.
5 潘久龙.地铁车站施工基坑开挖对临近建筑物的影响研究[D].南昌:华东交通大学.2012
6 王海涛,徐炳雄,纪文武,张会远,易富民.MIDAS/GTS-快速入门与使用技巧[M].大连:大连理工出版社2013.
7 李治.MIDAS/GTS在岩土工程中的应用[M].中国建筑工业出版社2012
8 徐中华,王卫东.敏感环境下基坑数值分析中土体本构模型的选择[J].岩土力学2010(1):258-264.
9 李云安,张鸿昌,糜崇蓉.深基坑工程变形控制及其影响因素的有限元分析[J].水文地质工程地质2001(4):1-4.
2 李云安.深基坑工程变形控制优化设计及其有限元数值模拟系统研究[J].岩石力学与工程学报2001(5):421-421.
3 赵延林,高全臣,衡朝阳.基坑开挖对近邻建筑物沉降影响的数值模拟[J].黑龙江科技学院学报2005(3):106-109.
4 Attwell P.B.Soil movement induced by tunneling and their effects or pipelines and structures[J].Black Chapman and Ha11,1986,20~46.
5 潘久龙.地铁车站施工基坑开挖对临近建筑物的影响研究[D].南昌:华东交通大学.2012
6 王海涛,徐炳雄,纪文武,张会远,易富民.MIDAS/GTS-快速入门与使用技巧[M].大连:大连理工出版社2013.
7 李治.MIDAS/GTS在岩土工程中的应用[M].中国建筑工业出版社2012
8 徐中华,王卫东.敏感环境下基坑数值分析中土体本构模型的选择[J].岩土力学2010(1):258-264.
9 李云安,张鸿昌,糜崇蓉.深基坑工程变形控制及其影响因素的有限元分析[J].水文地质工程地质2001(4):1-4.
目录