3D numerical settlement analysis of a new subway station close to an existing subway station - 文章详情页

作者：

Li, Jidong (Li, Jidong.) | Tao, Lianjin (Tao, Lianjin.) (学者：陶连金) | An, Junhai (An, Junhai.) | Wu, Binglin (Wu, Binglin.)

收录：

EI Scopus

摘要：

This　paper　presents　a　case　analysis　of　the　settlement　value　of　the　existing　Subway　Station　during　the　construction　of　a　new　subway　station　close-attached　undercrossing　in　Beijing,　China.　A　micro-distortion　excavation　control　method　is　proposed,　that　is　the　flat-top　straight　wall　Cross　Diaphragm　(CRD)　+　multiple　pre-top　bracing　concealed　excavation　construction　methods.　Furthermore,　a　numerical　analysis　using　a　finite　difference　program,　FLAC3D,　was　conducted　to　analyze　the　settlement　value　of　the　existing　Subway　Station.　.The　results　show　that　the　maximum　accumulated　settlement　value　distribution　was　a　shape　of　＇W＇;　the　largest　settlement　value　is　2.96　mm,　occurred　above　5　drift;　The　accumulative　deformation　of　the　existing　station　was　largest　when　the　excavation　of　1-drift　and　2-drift　was　completed;　Jacks　plays　an　important　role　in　the　active　controlling　the　settlement　value　of　the　existing　station.　The　excavation　of　1-drift　destroys　original　crustal　stress　equilibrium,　the　plastic　zone　is　formed;　The　plastic　zone　scope　of　soil　above　excavation　section　is　largest,　the　thickness　is　about　12.5m.　©　2014　ejge.

关键词：

Excavation Railroads Subway stations Jacks

作者机构：

[ 1 ] [Li, Jidong]Key Laboratory of Urban Security and Disaster Engineering, Ministry of Education, Beijing University of Technology, Beijing, China
[ 2 ] [Li, Jidong]Dept. of Civil Engineering, Beijing University of Technology, Beijng, China
[ 3 ] [Tao, Lianjin]Key Laboratory of Urban Security and Disaster Engineering, Ministry of Education, Beijing University of Technology, Beijing, China
[ 4 ] [Tao, Lianjin]Dept. of Civil Engineering, Beijing University of Technology, Beijng, China
[ 5 ] [An, Junhai]Key Laboratory of Urban Security and Disaster Engineering, Ministry of Education, Beijing University of Technology, Beijing, China
[ 6 ] [An, Junhai]Dept. of Civil Engineering, Beijing University of Technology, Beijng, China
[ 7 ] [Wu, Binglin]Key Laboratory of Urban Security and Disaster Engineering, Ministry of Education, Beijing University of Technology, Beijing, China
[ 8 ] [Wu, Binglin]Dept. of Civil Engineering, Beijing University of Technology, Beijng, China

通讯作者信息：

[li, jidong]dept. of civil engineering, beijing university of technology, beijng, china;;[li, jidong]key laboratory of urban security and disaster engineering, ministry of education, beijing university of technology, beijing, china

电子邮件地址：

ljd0911@emails.bjut.edu.cn

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