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CLC number: U23

On-line Access: 2010-01-01

Received: 2009-03-14

Revision Accepted: 2009-06-04

Crosschecked: 2009-12-15

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Journal of Zhejiang University SCIENCE A 2010 Vol.11 No.2 P.88-96

http://doi.org/10.1631/jzus.A0900522


Exothermic process of cast-in-place pile foundation and its thermal agitation of the frozen ground under a long dry bridge on the Qinghai-Tibet Railway


Author(s):  Ya-ping WU, Jian GUO, Chun-xiang GUO, Wei MA, Xiao-jun WANG

Affiliation(s):  School of Civil and Architecture Engineering, Ningbo Institute of Technology, Zhejiang University, Ningbo 315100, China; more

Corresponding email(s):   yapingwu58@126.com, guoj@vip.163.com

Key Words:  Exothermic process of hydration heat, Cast-in-place (CIP) pile foundation, Dry bridge, Thermal agitation, Frozen ground, Qinghai-Tibet Railway


Ya-ping WU, Jian GUO, Chun-xiang GUO, Wei MA, Xiao-jun WANG. Exothermic process of cast-in-place pile foundation and its thermal agitation of the frozen ground under a long dry bridge on the Qinghai-Tibet Railway[J]. Journal of Zhejiang University Science A, 2010, 11(2): 88-96.

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author="Ya-ping WU, Jian GUO, Chun-xiang GUO, Wei MA, Xiao-jun WANG",
journal="Journal of Zhejiang University Science A",
volume="11",
number="2",
pages="88-96",
year="2010",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A0900522"
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%0 Journal Article
%T Exothermic process of cast-in-place pile foundation and its thermal agitation of the frozen ground under a long dry bridge on the Qinghai-Tibet Railway
%A Ya-ping WU
%A Jian GUO
%A Chun-xiang GUO
%A Wei MA
%A Xiao-jun WANG
%J Journal of Zhejiang University SCIENCE A
%V 11
%N 2
%P 88-96
%@ 1673-565X
%D 2010
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A0900522

TY - JOUR
T1 - Exothermic process of cast-in-place pile foundation and its thermal agitation of the frozen ground under a long dry bridge on the Qinghai-Tibet Railway
A1 - Ya-ping WU
A1 - Jian GUO
A1 - Chun-xiang GUO
A1 - Wei MA
A1 - Xiao-jun WANG
J0 - Journal of Zhejiang University Science A
VL - 11
IS - 2
SP - 88
EP - 96
%@ 1673-565X
Y1 - 2010
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A0900522


Abstract: 
A number of dry bridges have been built to substitute for the roadbed on the qinghai-Tibet Railway, China. The aim of this study was to investigate the exothermic process of cast-in-place (CIP) pile foundation of a dry bridge and its harm to the stability of nearby frozen ground. We present 3D heat conduction functions of a concrete pile and of frozen ground with related boundaries. Our analysis is based on the theory of heat conduction and the exponent law describing the adiabatic temperature rise caused by hydration heat. Results under continuous and initial conditions were combined to establish a finite element model of a CIP pile-frozen ground system for a dry bridge under actual field conditions in cold regions. Numerical results indicated that the process could effectively simulate the exothermic process of CIP pile foundation. Thermal disturbance to frozen ground under a long dry bridge caused by the casting temperature and hydration heat of CIP piles was substantial and long-lasting. The simulated thermal analysis results agreed with field measurements and some significant rules relating to the problem were deduced and conclusions reached.

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

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