Comprehensive assessment of prestress loss in post-tensioned prestressed concrete structures exposed to wet-dry cycles in chloride environments

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成果类型：

期刊论文

作者：

Xiao, Junyi;Peng, Jianxin;Yang, Yiming;Dong, You;Cheng, Xiaokang;...

通讯作者：

Peng, JX;Yang, YM

作者机构：

[Cheng, Xiaokang; Xiao, Junyi; Peng, Jianxin; Zhang, Jianren] Changsha Univ Sci & Technol, Sch Civil Engn, Key Lab Bridge Engn Safety Control, Dept Educ, Changsha 410114, Hunan, Peoples R China.

[Xiao, Junyi] Guangzhou Vocat Coll Technol & Business, Sch Emergency Technol, Guangzhou 511442, Guangdong, Peoples R China.

[Yang, Yiming] Hunan City Univ, Sch Civil Engn, Yiyang 413000, Hunan, Peoples R China.

[Dong, You] Hong Kong Polytech Univ, Dept Civil & Environm Engn, Hong Kong 999077, Peoples R China.

通讯机构：

[Peng, JX ] C

[Yang, YM ] H

Changsha Univ Sci & Technol, Sch Civil Engn, Key Lab Bridge Engn Safety Control, Dept Educ, Changsha 410114, Hunan, Peoples R China.

Hunan City Univ, Sch Civil Engn, Yiyang 413000, Hunan, Peoples R China.

语种：

英文

关键词：

Post-tensioned concrete structures;Chloride wet-dry environment;Performance degradation;Concrete creep;Prestress loss

期刊：

Engineering Structures

ISSN：

0141-0296

年：

2025

卷：

328

页码：

119691

DOI：

10.1016/j.engstruct.2025.119691

基金类别：

CRediT authorship contribution statement You Dong: Writing – review & editing. Xiaokang Cheng: Writing – review & editing. Junyi Xiao: Writing – original draft, Software, Methodology, Investigation, Formal analysis, Data curation, Conceptualization. Jianxin Peng: Writing – review & editing, Supervision, Methodology, Investigation, acquisition, Conceptualization. Yiming Yang: Writing – review & editing, Supervision, Investigation. Jianren Zhang: Supervision, Resources.

机构署名：

本校为通讯机构

院系归属：

土木工程学院

摘要：

The shrinkage, creep of concrete, and relaxation of prestressing tendons lead to prestress loss in prestressed concrete (PC) structures under conventional environments. The prestress loss of PC structures is also affected by corrosive environments resulting from alternating wet and dry. Therefore, a new model for predicting prestress loss under alternating damp and dry chloride environments is proposed. The model considers the coupled effects of corrosion on concrete creep and the remaining cross-sectional area of steel reinforcement/prestressi...

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Comprehensive assessment of prestress loss in post-tensioned prestressed concrete structures exposed to wet-dry cycles in chloride environments

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