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Restraint degree concept in analysis of self-induced stress of massive RC structures

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Title Restraint degree concept in analysis of self-induced stress of massive RC structures
 
Creator Xin, Jianda
Ouyang, Jianshu
Li, Jianhua
Shi, Nannan
Huang, Dahai
 
Subject Massive RC structure
Shrinkage
Thermal Expansion
Creep
Self-induced stress
External restraint
 
Description 335-345
In this paper, the effect of reinforcement on the concrete self-induced stress before the concrete crack is analyzed. Based on a uniaxial restraint model, the effect of reinforcement on the concrete self-induced stress is investigated by taking into consideration such factors, as concrete shrinkage, concrete creep and thermal expansion, respectively. A numerical analysis on the self-induced stress of massive RC structures is then conducted using a finite element method. The effect of reinforcement on the concrete self-induced stress under the coupling effect of concrete shrinkage, creep and thermal expansion is studied. It is found that the external restraint plays an important role on evaluation of the effect of reinforcement on the concrete self-induced stress. A simplified relationship between the external restraint and the reinforcement influence coefficient is developed. The elastic and viscoelastic approach give a consistent description of the effect of reinforcement on concrete self-induced stress.
 
Date 2018-10-23T10:43:53Z
2018-10-23T10:43:53Z
2018-08
 
Type Article
 
Identifier 0975-1017 (Online); 0971-4588 (Print)
http://nopr.niscair.res.in/handle/123456789/45260
 
Language en_US
 
Rights <img src='http://nopr.niscair.res.in/image/cc-license-sml.png'> <a href='http://creativecommons.org/licenses/by-nc-nd/2.5/in' target='_blank'>CC Attribution-Noncommercial-No Derivative Works 2.5 India</a>
 
Publisher NISCAIR-CSIR, India
 
Source IJEMS Vol.25(4) [August 2018]