摘要
依托成绵乐客运专线机场路隧道下穿成都市蓝天立交工程,采用有限差分软件FLAC^(3D)进行三维数值模拟分析。主要从隧道开挖所造成的地表沉降、桩基下沉量以及桩基端部水平位移差值这三个方面进行研究。研究结果表明:暗挖施工方案明显优于明挖施工方案。研究成果为既有立交桥的正常运营以及机场路隧道施工的顺利进行提供了保证,又可为相似工程提供参考。
Finite difference software Flac3D is used to build the 3-d digital model for the project of Jiehang road tunnel of Chengdu-MianyangLeshan passenger dedicated line across Lantian viaduct in Chengdu. The ground settlement, vertical displacement of pile foundations and difference value of horizontal displacement between pile top and pile bottom caused by tunnel excavation from the tunnel are studied. It＇s shown that the undercut construction scheme is superior to the open one. These researches provide important guarantee for the normal operation of existing viaduct and the constructure of Jichang road tunnel. And references is provided for similar projects.
出处
《世界科技研究与发展》
CSCD
2011年第2期257-259,250,共4页
World Sci-Tech R&D
关键词
近接桩基
客运专线隧道
施工方案
地表位移
竖向位移
水平位移
adjacent pile foundations
passenger dedicated line tunnel
construction scheme
surface displacement
vertical displacement
horizontal displacement
