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...

钻孔灌注桩孔壁稳定性的影响因素研究

Keywords: 桥梁工程,钻孔灌注桩,桩基,孔壁稳定,近距离施工,影响因素,数值分析

Full-Text   Cite this paper   Add to My Lib

Abstract:

以某大型桥梁近接工程为背景,采用专业岩土工程有限元软件Plaxis,对钻孔灌注桩孔壁稳定性的影响因素进行了数值分析研究。研究结果表明若无邻近老桩基影响,孔径、孔深、泥浆相对密度、护筒深度及成孔时间是钻孔灌注桩孔壁稳定的主要影响因素;在邻近老桩基的影响下,护筒保护和护筒穿越土层的合理深度是可以将两邻近桩基相互影响降到最低的保证。以上研究结果的应用可提高钻孔效率,并可有效控制超近距离建(构)筑物桩基施工的破坏性影响,保证施工安全。

References

[1]  林才奎.钻孔灌注长大桩基的施工探讨[D].成都:西南交通大学,1999.LIN Caikui.Study on Construction of Long Bored Pile[D].Chengdu:Southwest Jiaotong University,1999:50-80.
[2]  刘自明.桥梁深水基础[M].北京:人民交通出版社,2003.LIU Ziming.The Deep Water Foundation of Bridge[M].Beijing:China Communications Press,2003:102-320.
[3]  DAVIS A G.The Nondestructive Impulse Response Test in North America[J].NDT & E International,2003,36(4):185-193.
[4]  ZHANG L M,TANG W H.Reliability of Bored Pile Foundations Considering Bias in Failure Criteria[J].Geotechnical Journal,2005,42(4):1086-1093.
[5]  GARG K G.Bored Pile Groups under Vertical Load in Sand[J].Journal of the Geotechnical Engineering Division,1979,105(8):939-956.
[6]  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.
[7]  CHEN L T,POULOS H G,LOGANATHAN N.Pile Responses Caused by Tunneling[J].Journal of Geotechnical and Geoenvironmental Engineering,ASCE,1999,125(3):207-215.
[8]  LOGANATHAN N,POLOUA H G,XU K J.Ground and Pile-group Responses due to Tunneling[J].Soils and Foundations,2001,41(1):57-67.
[9]  LEE T K,NG W W.Effects of Advancing Open Face Tunneling on an Existing Loaded Pile[J].Journal of Geotechnical and Geoenvironmental Engineering,ASCE,2005,131(2):193-201.
[10]  孙钧,刘洪洲.交叠隧道盾构法施工土体变形的三维数值模拟[J].同济大学学报,2002,30(4):379-385.SUN Jun,LIU Hongzhou.3D Numerical Simulation of Ground Surface Settlement under Overlapped Shield Tunneling[J].Journal of Tongji University,2002,30(4):379-385.
[11]  邵华,张子新.盾构近距离穿越施工对已运营隧道的扰动影响分析[J].岩土力学,2004,25(增2):545-549.SHAO Hua,ZHANG Zixin.Analysis of Disturbing Effect on Running Subway Caused by Adjacent Shield-driven[J].Rock and Soil Mechanics,2004,25(S2):545-549.
[12]  徐前卫,尤春安,李大勇.盾构近距离穿越已建隧道的施工影响分析[J].岩土力学,2004,25(1):95-98.XU Qianwei,YOU Chun'an,LI Dayong.Analysis of Construction Influence of Shield Tunnel Machine Passing over Old Nearby Tunnels[J].Rock and Soil Mechanics,2004,25(1):95-98.
[13]  张海波,殷宗泽,朱俊高.近距离叠交隧道盾构施工对老隧道影响的数值模拟[J].岩土力学,2005,26(2):282-286.ZHANG Haibo,YIN Zongze,ZHU Jungao.Numerical Simulation of Influence of New Tunnel on Short Distance Overlapped Old Tunnel during Shield Tunneling[J].Rock and Soil Mechanics,2005,26(2):282-286.
[14]  胡群芳,黄宏伟.软土地层近距离上穿既有隧道变形的数值模拟[J].岩土工程学报,2006,28(1):42-47.HU Qunfang,HUANG Hongwei.Analysis and Monitoring on Shield Tunneling under Existing Adjacent Tunnel[J].Chinese Journal of Geotechnical Engineering,2006,28(1):42-47.
[15]  张印涛,陶连金,边金.盾构隧道开挖引起地表沉降数值模拟与实测分析[J].北京工业大学学报,2006,32(4):332-337.ZHANG Yintao,TAO Lianjin,BIAN Jin.Analysis of the Numerical Simulation of Ground Movement Induced by Shield Tunneling[J].Journal of Beijing University of Technology,2006,32(4):332-337.
[16]  赵旭峰,王春苗,孙景林,等.盾构近接隧道施工力学行为分析[J].岩土力学,2007,28(2):409-414.ZHAO Xufeng,WANG Chunmiao,SUN Jinglin,et al.Analysis of Mechanical Action of Shield Driving for Approaching Excavation[J].Rock and Soil Mechanics,2007,28(2):409-414.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133