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...

极限荷载下X形桩和圆形桩破坏形式对比模型试验

, PP. 10-15

Keywords: 道路工程,桩基础,模型试验,破坏形式,土体位移场

Full-Text   Cite this paper   Add to My Lib

Abstract:

?为了推广一种新型横截面异形桩(X形桩)在高速公路等软基处理工程中的应用,对其极限荷载下桩端和桩侧土体破坏形式进行研究。首先基于透明土材料和粒子图像测速(PIV)技术,对等混凝土用量的X形桩和圆形桩竖向极限承载力特性进行了对比模型试验研究,分析了桩顶荷载-沉降规律、各级荷载下桩端和桩侧土体位移场的变化规律,以及极限荷载下桩端和桩侧土体的破坏形式;在此基础上分析了不同桩长下各类型桩的承载力与沉降特性。研究结果表明:X形桩的极限承载力约为等体积圆形桩的1.5倍;极限荷载作用下X形桩和圆形桩的桩端和桩侧土体破坏形式存在一定差异。

References

[1]  刘汉龙.现浇X形钢筋混凝土桩施工方法:中国, 200710020306.3[P].2007-08-22. LIU Han-long.Construction Method of X-section Cast-in-place Reinforced Concrete Pile:China,200710020306.3[P].2007-08-22.
[2]  刘汉龙,刘芝平,王新泉.现浇X型混凝土桩截面几何特性研究[J].中国铁道科学,2009,30(1):17-23. LIU Han-long,LIU Zhi-ping,WANG Xin-quan.Study on the Geometric Characteristics of the Cast-in-place X-type Vibro-pile Section[J].China Railway Science,2009,30(1):17-23.
[3]  刘汉龙,吕亚茹,丁选明,等.现浇X形桩复合地基桩侧摩阻力分布特性[J].中国公路学报,2012,25(6):17-23. LIU Han-long,LU Ya-ru,DING Xuan-ming,et al.Behavior of Side Friction of X-section Cast-in-place Concrete Pile Composite Foundation[J].China Journal of Highway and Transport,2012,25(6):17-23.
[4]  王智强,刘汉龙,张敏霞,等.现浇X形桩竖向承载特性足尺模型试验研究[J].岩土工程学报,2010,32(6):903-907. WANG Zhi-qiang,LIU Han-long,ZHANG Min-xia,et al.Full Scale Model Tests on Vertical Bearing Characteristics of Cast-in-place X-section Piles[J].Chinese Journal of Geotechnical Engineering,2010,32(6):903-907.
[5]  袁 佶.X形桩水平承载性能足尺模型试验研究[D].南京:河海大学,2009. YUAN Ji.Research on Full-scale Model Test for the Behavior of X-section Pile Under Lateral Load[D].Nanjing:Hohai University,2009.
[6]  雍 君,陆晓敏,刘汉龙.X形混凝土桩抗拔特性试验研究[J].岩土力学,2010,31(11):3430-3434. YONG Jun,LU Xiao-min,LIU Han-long.Model Test Study of Anti-pulling Property of X-shaped Concrete Pile[J].Rock and Soil Mechanics,2010,31(11):3430-3434.
[7]  丁选明,孔纲强,刘汉龙,等.现浇X形桩桩-土荷载传递规律现场试验研究[J].岩土力学,2012,33(2):489-493. DING Xuan-ming,KONG Gang-qiang,LIU Han-long,et al.Field Tests Study on Pile-soil Load Transfer Characteristics of X-shaped Cast-in-place Pile[J].Rock and Soil Mechanics,2012,33(2):489-493.
[8]  LU Y R,LIU H L,DING X M,et al.Field Tests on Bearing Characteristics of X-section Pile Composite Foundation[J].Journal of Performance of Constructed Facilities,2011,26(2):180-189.
[9]  刘汉龙,金 辉,丁选明,等.现浇X形混凝土桩沉桩挤土效应现场试验研究[J].岩土力学,2012,33(增2):219-223,228. LIU Han-long,JIN Hui,DING Xuan-ming,et al.Field Test Research on Squeezing Effects of X-section Cast-in-place Concrete Pile[J].Rock and Soil Mechanics,2012,33(S2):219-223,228.
[10]  KONG G Q,ZHOU H,DING X M,et al.Comparative Study on Landslide Disaster Treatment Effect by Using XCC Pile and Traditional Circular Pile[J].Disaster Advances,2013,6(S1):151-155.
[11]  ISKANDER M,SADEK S,LIU J Y.Optical Measurement of Deformation Using Transparent Silica to Model Sand[J].International Journal of Physical Modelling in Geotechnics,2002,2(4):13-26.
[12]  LEHANE B M,GILL D R.Displacement Fields Induced by Penetrometer Installation in an Artificial Soil[J].International Journal of Physical Modelling in Geotechnics,2004,4(1):25-36.
[13]  WHITE D J,BOLTON M D.Displacement and Strain Paths During Plane-strain Model Pile Installation in Sand[J].Geotechnique,2004,54(6):375-397.
[14]  NI Q,HIRD C C,GUYMER I.Physical Modelling of Pile Penetration in Clay Using Transparent Soil and Particle Image Velocimetry[J].Geotechnique,2009,60(2):121-132.
[15]  孔纲强,刘 璐,刘汉龙,等.玻璃砂透明土变形特性三轴试验研究[J].岩土工程学报,2013,35(6):1140-1146. KONG Gang-qiang,LIU Lu,LIU Han-long,et al.Triaxial Tests on Deformation Characteristics of Transparent Glass Sand[J].Chinese Journal of Geotechnical Engineering,2013,35(6):1140-1146.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133