Complete load transfer behavior of base-grouted bored piles

被引：0

作者：

张乾青 ^{[1
,2
,3
]}

张忠苗 ^{[2
,3
]}

机构：

[1] Geotechnical and Structural Engineering Research Center,Shandong University

[2] Key Laboratory of Soft Soils and Geoenvironmental Engineering of Ministry of Education (Zhejiang University)

[3] Institute of Geotechnical Engineering,Zhe jiang University

来源：

JournalofCentralSouthUniversity | 2012年 / 19卷 / 07期

基金：

中国国家自然科学基金;

关键词：

destructive full-scale test; post-grouting technique; load-displacement response; axial force; tip resistance; skin friction;

D O I：

暂无

中图分类号：

TU473.1 [桩基];

学科分类号：

081401 ;

摘要：

A field study on the behavior of three destructive piles in soft soils subjected to axial load was presented.All the three piles with different diameters were base-grouted and installed with strain gauges along the piles.The complete load transfer behavior of the base-grouted pile was analyzed using measured results.Moreover,the thresholds of the relative pile-soil displacement for fully mobilizing skin frictions in different soils were investigated,and pile tip displacements needed to fully mobilize tip resistances were analyzed.The results of the full-scale loading tests show that the skin frictions are close to the ultimate values when the pile-soil relative displacements are 1%-3% of pile diameter,and the pile tip displacements needed to fully mobilize the tip resistances are about 1.3%-2.0% of pile diameter.The load transmission curve of the soils around the pile tip corresponds to a softening model when the pile is loaded to failure.

引用

页码：2037 / 2046

页数：10

共 4 条

[1]

Ultimate end bearing capacity of rock-socketed pile based on generalized nonlinear unified strength criterion[J]. 章敏,王星华,汪优. Journal of Central South University of Technology. 2011(01)

[2]

A simplified approach for settlement analysis of single pile and pile groups considering interaction between identical piles in multilayered soils[J] . Qian-Qing Zhang,Zhong-Miao Zhang,Jing-Yu He. Computers and Geotechnics . 2010 (7)

[3] Reducing uncertainty of prediction from empirical correlations [J].

Zhang, LM ;

Tang, WH ;

Zhang, LL ;

Zheng, JG .

JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING, 2004, 130 (05) :526-534

[4]

A destructive field studyon the behavior of piles under tension and compression .2 ZHANG Z M,ZHANG Q Q,YU F. Journal of Zhejiang University-SCIENCE A(Applied Physics&Engineering) . 2011

← 1 →