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Coupling model for calculating prestress loss caused by relaxation loss, shrinkage, and creep of concrete

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成果类型:
期刊论文
作者:
Cao Guo-hui*;Hu Jia-xing;Zhang Kai
通讯作者:
Cao Guo-hui
作者机构:
[Cao Guo-hui; Zhang Kai] Hunan City Univ, Coll Civil Engn, Yiyang 413000, Peoples R China.
[Hu Jia-xing] Hunan Univ, Coll Civil Engn, Changsha 410082, Peoples R China.
通讯机构:
[Cao Guo-hui] H
Hunan City Univ, Coll Civil Engn, Yiyang 413000, Peoples R China.
语种:
英文
关键词:
prestress;relaxation loss;shrinkage and creep;theoretical analysis;calculation model
关键词(中文):
预应力混凝土;损失计算;耦合模型;收缩徐变;松弛;预应力损失值;预应力筋;时变函数
期刊:
中南大学学报(英文版)
ISSN:
2095-2899
年:
2016
卷:
23
期:
2
页码:
470-478
基金类别:
National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [51551801]; Natural Science Foundation of Hunan Province, ChinaNatural Science Foundation of Hunan Province [14JJ4062]
机构署名:
本校为第一且通讯机构
院系归属:
土木工程学院
摘要:
The calculation model for the relaxation loss of concrete mentioned in the Code for Design of Highway Reinforced Concrete and Prestressed Concrete Bridges and Culverts (JTG D62—2004) was modified according to experimental data. Time-varying relaxation loss was considered in the new model. Moreover, prestressed reinforcement with varying lengths (caused by the shrinkage and creep of concrete) might influence the final values and the time-varying function of the forecast relaxation loss. Hence, the effects of concrete shrinkage and creep were co...

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