Prestress Loss Analysis on Prestressed Simply Supported Beams under the Action of Natural Freezing-thawing Cycles

2018 International Conference on Construction, Aviation and Environmental Engineering

生态环境科学;生物科学

Liu, Hui^1^2 ; Han, Fang^1 ; Liu, Ming^2 ; Li, Jiuyang^1

Changchun Institute of Technology, Changchun, Jilin Province

130012, China^1

Shenyang Jianzhu University, Shenyang, Liaoning Province

1101683, China^2

关键词: Comparative analysis;    Fatigue loadings;    Freezing thawing cycles;    Freezing-thawing;    Pre-stressed;    Prestress loss;    Simply supported beams;    Static forces;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/233/3/032035/pdf
DOI  :  10.1088/1755-1315/233/3/032035

来源: IOP

【 摘 要 】

Under the action of natural freezing-thawing cycles, static force loading and fatigue loading tests on four simply supported beams were conducted. Various indexes of the beams such as stress, deflection and crack at each stage of loading were recorded; a comparative analysis on prestress loss of the beams was conducted, based on which a formula of relationship between freezing-thawing and prestress loss under fatigue loading was established.