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...

扩底楔形桩沉桩挤土效应理论分析

, PP. 9-16

Keywords: 道路工程,扩底楔形桩,球孔扩张理论分析,沉桩效应,挤土位移

Full-Text   Cite this paper   Add to My Lib

Abstract:

?为了分析扩底楔形桩施工过程中扩大头注浆或夯扩沉桩对桩周土体的挤土效应,基于球孔扩张理论,考虑扩底楔形桩施工中楔形桩静压沉桩完成后的土体应力场影响,建立扩底楔形桩施工中扩大头注浆或夯扩沉桩过程中桩周土体应力场的理论计算方法。通过对不同初始应力场情况下挤扩效应的对比分析,验证了所建立理论计算模型的准确性和可靠性;分析了扩大头直径、土体参数,以及楔形桩沉桩后应力场、位移场等因素对扩大头施工中挤土效应的影响规律。研究结果表明:建立的理论计算模型能较好地模拟扩大头注浆或夯扩沉桩过程;楔形桩桩身施工造成的桩周土体应力变化要远大于扩大头施工所造成的桩周土体应力变化,楔形桩桩身施工所产生的挤土应力起主导作用。

References

[1]  孔纲强,杨 庆.一种扩底预应力锥形管桩及其施工方法:中国,ZL200810011854.4[P].2010-06-23. KONG Gang-qiang,YANG Qing.A New Pile Type:Prestressed Balled Tapered Pipe Pile and Its Construction Method:China,ZL200810011854.4[P].2010-06-23.
[2]  王奎华,吴文兵,叶 良,等.基于极限平衡理论的楔形桩承载力计算方法[J].建筑科学与工程学报,2009,26(4):108-113. WANG Kui-hua,WU Wen-bing,YE Liang,et al.Calculation Method of Bearing Capacity of Tapered Pile Based on Limit Equilibrium Theory [J].Journal of Architecture and Civil Engineering,2009,26(4):108-113.
[3]  孔纲强,杨 庆,年廷凯,等.扩底楔形桩竖向抗压和负摩阻力特性研究[J].岩土力学,2011,32(2):503-509. KONG Gang-qiang,YANG Qing,NIAN Ting-kai,et al.Study of Characteristics of Compression Capacity and Negative Skin Friction for Belled Wedge Pile[J].Rock and Soil Mechanics,2011,32(2):503-509.
[4]  孔纲强.堆载条件下现浇扩底楔形群桩负摩阻力特性研究[J].岩土工程学报,2011,33(增1):364-368. KONG Gang-qiang.Performances of Negative Skin Friction of Belled Wedge Pile Group Under Surcharge Load[J].Chinese Journal of Geotechnical Engineering,2011,33(S1):364-368.
[5]  KONG Gang-qiang.Performances of Compressive Capacity for Belled Wedge Pile Group[J].Advanced Materials Research,2011,261-263:1084-1088.
[6]  YU H S,CARTER J P.Rigorous Similarity Solution for Cavity Expansion in Cohesive Frictional Soil[J].International Journal of Geomechanics,2002,2(2):233-258.
[7]  朱 宁,施建勇.静压桩桩端扩张压力分析[J].河海大学学报:自然科学版,2006,34(1):79-82. ZHU Ning,SHI Jian-yong.Analysis of Expansion Pressure at Tip of Jacked Piles[J].Journal of Hohai Univer-sity:Natural Sciences,2006,34(1):79-82.
[8]  胡新民.粉喷和浆喷水泥桩加固软土地基的力学特性[J].筑路机械与施工机械化,2010,27(6):42-44. HU Xin-min.Mechanical Characteristics of Soft Soil Foundation Reinforced with Powder-jetting and Grout-jetting Cement Piles[J].Road Machinery & Construction Mechanization,2010,27(6):42-44.
[9]  李 强,王奎华,张智卿.饱和土中挤土桩竖向振动简化计算模型[J].建筑科学与工程学报,2011,28(1):42-48. LI Qiang,WANG Kui-hua,ZHANG Zhi-qing.Simplified Calculation Model for Vertical Vibration of Compaction Pile in Saturated Soil [J].Journal of Architecture and Civil Engineering,2011,28(1):42-48.
[10]  YU H S,HOULSBY G T.Finite Cavity Expansion in Dilatants Soil:Loading Analysis[J].Geotechnique,1991,41(2):173-183.
[11]  陈从春,张季如,肖汝诚.砂土中深基基底极限承载力分析[J].土木工程学报,2005,38(8):102-106. CHEN Cong-chun,ZHANG Ji-ru,XIAO Ru-cheng.An-alysis for the Ultimate Bearing Capacity of Deep Foundations in Sands[J].China Civil Engineering Journal,2005,38(8):102-106.
[12]  刘俊伟,张明义,赵洪福,等.基于球孔扩张理论和侧阻力退化效应的压桩力计算模拟[J].岩土力学,2009,30(4):1181-1185. LIU Jun-wei,ZHANG Ming-yi,ZHAO Hong-fu,et al.Computational Simulation of Jacking Force Based on Spherical Cavity Expansion Theory and Friction Fatigue Effect [J].Rock and Soil Mechanics,2009,30(4):1181-1185.
[13]  王家涛,周 健,张明义.基于球孔扩张理论和时效性的静压桩承载力计算[J].地下空间与工程学报,2010,6(5):964-968. WANG Jia-tao,ZHOU Jian,ZHANG Ming-yi.Computation of Bearing Capacity of Jacked Piles Based on Spherical Cavity Expansion Theory and Time Effect[J].Chinese Journal of Underground Space and Engineering,2010,6(5):964-968.
[14]  王 建,任文峰.苏拉马都大桥钻孔桩泥浆性能研究[J].筑路机械与施工机械化,2007,24(2):44-46. WANG Jian,REN Wen-feng.Study on Slurry Character of Suramadu Bridge Bored Pile[J].Road Machinery & Construction Mechanization,2007,24(2):44-46.
[15]  李莲秀,吴盛伟,苏英平.桩端后压浆灌注桩承载力的可靠性研究[J].筑路机械与施工机械化,2013,30(1):70-72. LI Lian-xiu,WU Sheng-wei,SU Ying-ping.Study on Reliability of Bearing Capacity of Pile-end Post-grouting Bored Pile[J].Road Machinery & Construction Mechanization,2013,30(1):70-72.
[16]  孔纲强,陈力恺,刘汉龙.考虑土体非线性固结沉降的复合地基桩侧负摩阻力研究[J].中国公路学报,2013,26(3):36-43. KONG Gang-qiang,CHEN Li-kai,LIU Han-long.Study on Negative Skin Friction of Pile in Composite Foundation Considering Nonlinear Consolidation of Soil[J].China Journal of Highway and Transport,2013,26(3):36-43.
[17]  邹 健,张忠苗.考虑压滤效应饱和黏土压密注浆球孔扩张理论[J].哈尔滨工业大学学报,2011,43(12):119-123. ZOU Jian,ZHANG Zhong-miao.Spherical Cavity Expansion Theory of Compaction Grouting in Saturated Clay Considering Pressure Filtration[J].Journal of Harbin Institute of Technology,2011,43(12):119-123.
[18]  SAGASETA C,WHITTLE A J.Prediction of Ground Movements Due to Pile Driving in Clay[J].Journal of Geotechnical and Geoenvironmental Engineering,2001,127(1):55-66.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133