全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

不同埋置位置隧道对群桩影响的离心模型试验

, PP. 67-73

Keywords: 隧道工程,桩基础,离心模型试验,承载特性,双隧道

Full-Text   Cite this paper   Add to My Lib

Abstract:

?为了给广西地区隧道的设计与施工提供参考,针对隧道开挖对临近建筑物桩基产生不利影响的实际情况,开展了不同埋置位置隧道对群桩影响的离心模型试验。试验中选取的离心加速度为40g,目标地层损失比为2%,通过排水法控制地层损失,并分析隧道开挖引起的地表沉降、桩顶附加沉降、附加弯矩和附加轴力的变化规律。试验结果表明:隧道开挖完成后,较浅埋深双隧道共同引起的地表沉降大于深埋隧道;隧道开挖过程中,位于桩端处的隧道开挖引起的桩顶附加沉降大于桩端以上处,对桩基的变形较为不利;不同埋深隧道分段开挖所引起桩的附加弯矩和附加轴力分布及发展规律差异显著。

References

[1]  MAIR R J.Unwin Memorial Lecture 1992. Developments in Geotechnical Engineering Research:Application to Tunnels and Deep Excavations[J].Proceedings of the ICE:Civil Engineering,1993,97(1):27-41.
[2]  JACOBSZ S W.The Effects of Tunneling on Piled Foundations[D].Cambridge:University of Cambridge,2003.
[3]  CHIANG K H,LEE C J.Responses of Single Piles to Tunneling-induced Soil Movements in Sandy Ground[J].Canadian Geotechnical Journal,2007,44(10):1224-1241.
[4]  JACOBSZ S W,STANDING J R,MAIR R J,et al.Centrifuge Modeling of Tunnelling near Driven Piles[J].Soil and Foundations,2004,44(1):49-56.
[5]  LOGANATHAN N,POULOS H G,STEWART D P.Centrifuge Model Testing of Tunneling-induced Ground and Pile Deformations[J].Geotechnique,2000,50(3):283-294.
[6]  朱逢斌,杨平,ONG C W.盾构隧道开挖对邻近桩基影响的数值分析[J].岩土工程学报,2008,32(2):298-302. ZHU Feng-bin,YANG Ping,ONG C W.Numerical Analysis on Influence of Shield Tunnel Excavation to Neighboring Piles[J].Chinese Journal of Geotechnical Engineering,2008,32(2):298-302.
[7]  马少坤,WONG K S,吕虎,等.膨胀土地基中隧道施工对群桩影响研究[J].岩土力学,2013,34(11):3055-3060. MA Shao-kun,WONG K S,LU Hu,et al.Study of Effects of Tunnel Construction on Pile Group in Expansive Soil[J].Rock and Soil Mechanics,2013,34(11):3055-3060.
[8]  马少坤,吕虎,WONG K S,等.双隧道对群桩影响的三维离心模型试验研究[J].岩土工程学报,2013,35(7):1337-1342. MA Shao-kun,LU Hu,WONG K S,et al.Three-dimensional Centrifuge Modeling of the Effects of Twin Tunnelling on Existing Pile Group in Expansive Clay[J].Chinese Journal of Geotechnical Engineering,2013,35(7):1337-1342.
[9]  NG C W W,LU H,PENG S Y.Three-dimensional Centrifuge Modeling of the Effects of Twin Tunnelling on an Existing Pile[J].Tunnelling and Underground Space Technology,2013,35(3):189-199.
[10]  DEPOUNTIS N,DAVIES M C R,HARRIS C,et al.Centrifuge Modeling of Capillary Rise[J].Engineering Geology,2001,60(1/2/3/4):95-106.
[11]  REZZOUG A, K?NIG D,TRIANTAFYLLIDIS T.Scaling Laws for Centrifuge Modeling of Capillary Rise in Sandy Soils[J].Journal of Geotechnical and Geoenvironmental Engineering,2004,130(6):615-620.
[12]  O'NEILL M W,REESE L C.Drilled Shafts:Construction Procedures and Design Methods[R].Washington DC:Federal Highway Administration,1999.
[13]  PECK R B.Deep Excavations and Tunneling in Soft Ground[C]//SMFE.Proceedings of the 7th International Conference on Soil Mechanics and Foundation Engineering.Mexico City:SMFE,1969:225-290.
[14]  ADDENBROOKE T I.Numerical Analysis of Tunnelling in Stiff Clay[D].London:Imperial College London,1996.

Full-Text

Contact Us

[email protected]

QQ:3279437679

WhatsApp +8615387084133