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ANALYSIS OF INFLUENCE OF SUBWAY STATION TRANSFER CHANNEL EXCAVATION ON EXISTING PILE FOUNDATION
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摘要: 针对北京地铁10号线国贸桥地铁站换乘通道的设计和施工方案,采用有限差分数值模拟方法对不同方案下地铁车站换乘通道暗挖施工过程中上部既有桩基的受力特性及位移变化规律进行模拟,据以制定合理的施工方案。研究结果表明:在不对桥桩采取加固措施的情况下,地表沉降量和桥桩沉降量均较大,桥基承载力损失严重,严重影响到桥桩的稳定性。因此,在换乘通道开挖过程中,必须采取相应的工程加固措施来确保桥桩的稳定。Abstract: Based on the design and construction scheme of transfer channel in International Trade Station of Beijing Subway No.10 Line,finite difference method is used to simulate the stress characteristic of existing piles and the displacement law during the excavation under subway station transfer channel construction,and the reasonable construction scheme is brought out.It is proved from the result that,if there aren't reinforcement measures on bridge piles,surface subsidence and settlement of bridge piles are large,and the bridge bearing capacity will be reduced seriously,therefore,the stability of bridge piles will be impacted seriously.As a result,during the excavation process of transfer channel,reinforcement measures are necessary to make sure the stability of bridge piles.
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Key words:
- subway /
- transfer channel /
- existing pile foundation /
- numerical simulation
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张志强,何川.地铁盾构隧道近接桩基的施工力学行为研究[J].铁道学报,2003,25(1):92-95. [2] 林刚,何川.盾构隧道基础上修建三连拱地铁车站结构参数研究[J].铁道学报,2003,25(6):93-98. [3] 李强,王明年,李德才.地铁车站暗挖隧道施工对既有桩基的影响[J].岩石力学与工程学报,2006,25(1):184-189. [4] 北京城建勘测设计研究有限责任公司.北京地铁10号线工程国贸站地质祥勘报告[R].北京:北京城建勘测设计研究有限公司.2003. [5] 关宝树.隧道工程施工要点集[M].北京:人民交通出版社,2003. [6] 李强,王明年.浅埋隧道近接施工地表沉降有限元分析[J].四川建筑,2004,24(1):98-101. [7] TBJ 10892铁路隧道喷锚构筑法技术规则[S]. [8] TB 100032004铁路隧道设计规范[S]. [9] 李围,何川.盾构隧道基础上修建三条平行隧道地铁车站的施工力学行为研究[J].现代隧道技术,2004,41(1):5-9. [10] 彭卫平,廖建三.广州地区建筑桩基设计参数分析与选取[J].岩石力学与工程学报,2004,23(6):1032-1036. [11] 张素情,侍倩.桩侧负摩阻力的有关研究[J].建筑技术开发,2004,31(4):23-25. -
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