Full Text:   <3481>

Summary:  <1890>

CLC number: TU47

On-line Access: 2014-06-04

Received: 2014-01-05

Revision Accepted: 2014-04-08

Crosschecked: 2014-05-21

Cited: 1

Clicked: 8166

Citations:  Bibtex RefMan EndNote GB/T7714

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Journal of Zhejiang University SCIENCE A 2014 Vol.15 No.6 P.419-431


Working characteristics of concrete-cored deep cement mixing piles under embankments*

Author(s):  Chi Wang1, Yong-fu Xu1, Ping Dong2

Affiliation(s):  1. Department of Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; more

Corresponding email(s):   chongdong@sjtu.edu.cn

Key Words:  Concrete-cored deep cement mixing (DCM) pile, Load transfer, Deformation control, Embankment

Chi Wang, Yong-fu Xu, Ping Dong. Working characteristics of concrete-cored deep cement mixing piles under embankments[J]. Journal of Zhejiang University Science A, 2014, 15(6): 419-431.

@article{title="Working characteristics of concrete-cored deep cement mixing piles under embankments",
author="Chi Wang, Yong-fu Xu, Ping Dong",
journal="Journal of Zhejiang University Science A",
publisher="Zhejiang University Press & Springer",

%0 Journal Article
%T Working characteristics of concrete-cored deep cement mixing piles under embankments
%A Chi Wang
%A Yong-fu Xu
%A Ping Dong
%J Journal of Zhejiang University SCIENCE A
%V 15
%N 6
%P 419-431
%@ 1673-565X
%D 2014
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A1400009

T1 - Working characteristics of concrete-cored deep cement mixing piles under embankments
A1 - Chi Wang
A1 - Yong-fu Xu
A1 - Ping Dong
J0 - Journal of Zhejiang University Science A
VL - 15
IS - 6
SP - 419
EP - 431
%@ 1673-565X
Y1 - 2014
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A1400009

The concrete-cored deep cement mixing (DCM) pile is a new kind of composite pile created by inserting a precast core pile into the DCM column socket and has only been used in a few expressway projects to date. In this paper, full scale field tests of composite foundations reinforced by both concrete-cored DCM piles and by conventional DCM columns under embankments were conducted in northeast of Nanjing Surrounding Expressway (NS-N Expressway), China. With the installation of settlement plates, multipoint settlement gauges, inclinometers, piezometers, pressure transducers, and steel stress meters, the results of plate load tests and long-term monitoring, including ultimate bearing capacity, total settlement, settlement along depth, lateral movement, loading sharing ratio, vertical stress of precast core pile, and excess pore pressure were presented. Based on field test results, the reinforcement effects of composite foundations reinforced by concrete-cored DCM piles and conventional DCM columns were compared. The load transfer characteristics of concrete-cored DCM piles under embankments were also discussed. The test results show that the foundation treatment effect of concrete-cored DCM pile is better than that of the conventional DCM column. Compared to the conventional DCM column, the upper load borne by concrete-cored DCM pile is higher, while the excess pore pressure in concrete-cored DCM pile composite foundation is lower than that in conventional DCM column composite foundation. Under embankment, negative friction occurs at the upper section of concrete-cored DCM pile.




Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


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