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Thermo-Hydro-Mechanical Combined Effect Analysis Model for Early-Age Concrete Bridges and Its Application
Joint Authors
Li, Shiwei
Wen, Wangqing
Yan, Aiguo
Pu, Qianhui
Yang, Yongqing
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-15, 15 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-09-07
Country of Publication
Egypt
No. of Pages
15
Main Subjects
Abstract EN
The early cracking of concrete beam bridges remains a concern in civil engineering.
An analytical model considering the combined effect of thermo-hydro-mechanical processes forms the basis for assessing the cracking risk of girders during construction.
Based on the equivalent hydration theory, the temperature and moisture conduction processes and the evolution of the mechanical properties of concrete were modeled as a function of the equivalent age.
A coupling model for the temperature and moisture fields was established, and a theoretical framework for analyzing the thermo-hydro-mechanical combined effect was presented.
Based on this, a numerical analysis method was proposed and implemented into ABAQUS; the results were validated with some typical tests.
Finally, a long-span prestressed concrete (PC) box girder bridge with balanced cantilever construction was taken as an example, and the causes of web cracking and its impact degree were analyzed.
The results show that the rate of moisture conduction is significantly lower than the rate of temperature conduction; even for thin-walled components, there exists a significant humidity gradient on the surface layer.
The humidity-induced shrinkage and restraint of the precast members are the main causes of web cracking.
American Psychological Association (APA)
Li, Shiwei& Yang, Yongqing& Pu, Qianhui& Wen, Wangqing& Yan, Aiguo. 2020. Thermo-Hydro-Mechanical Combined Effect Analysis Model for Early-Age Concrete Bridges and Its Application. Advances in Civil Engineering،Vol. 2020, no. 2020, pp.1-15.
https://search.emarefa.net/detail/BIM-1124525
Modern Language Association (MLA)
Li, Shiwei…[et al.]. Thermo-Hydro-Mechanical Combined Effect Analysis Model for Early-Age Concrete Bridges and Its Application. Advances in Civil Engineering No. 2020 (2020), pp.1-15.
https://search.emarefa.net/detail/BIM-1124525
American Medical Association (AMA)
Li, Shiwei& Yang, Yongqing& Pu, Qianhui& Wen, Wangqing& Yan, Aiguo. Thermo-Hydro-Mechanical Combined Effect Analysis Model for Early-Age Concrete Bridges and Its Application. Advances in Civil Engineering. 2020. Vol. 2020, no. 2020, pp.1-15.
https://search.emarefa.net/detail/BIM-1124525
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1124525