{"title":"Long-term deterioration behavior of round-end hollow piers during cyclic solar radiation","authors":"","doi":"10.1016/j.engfracmech.2024.110436","DOIUrl":null,"url":null,"abstract":"<div><p>Reinforced concrete (RC) hollow piers are inevitably impacted by solar radiation during their service life. However, normal investigation approaches are inadequate for characterizing the long-term degeneration of RC structures under cyclic solar radiation. In this article, a novel elastoplastic-thermodynamic numerical approach has been suggested for evaluating the long-term deterioration behavior of hollow piers during cyclic solar radiation and ambient temperature fluctuations. The findings suggest thermal effect caused by solar radiation and ambient temperature fluctuations might cause the pier surface concrete to crack. The maximum first principal strain of pier surface concrete in July is approximately 1.21 times greater than the concrete peak tensile strain. Tensile damage of pier concrete rises with cyclic times of solar radiation. Tensile damage of surface concrete rose from 0.495 to 0.566 and 0.610, as exposure time increased from 1 to 10 and 100 years. Reducing the surface short wave absorption rate, increasing concrete specific heat, and decreasing pier wall thickness is beneficial to minimizing long-term tensile damage of pier concrete.</p></div>","PeriodicalId":11576,"journal":{"name":"Engineering Fracture Mechanics","volume":null,"pages":null},"PeriodicalIF":4.7000,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Engineering Fracture Mechanics","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S001379442400599X","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MECHANICS","Score":null,"Total":0}
引用次数: 0
Abstract
Reinforced concrete (RC) hollow piers are inevitably impacted by solar radiation during their service life. However, normal investigation approaches are inadequate for characterizing the long-term degeneration of RC structures under cyclic solar radiation. In this article, a novel elastoplastic-thermodynamic numerical approach has been suggested for evaluating the long-term deterioration behavior of hollow piers during cyclic solar radiation and ambient temperature fluctuations. The findings suggest thermal effect caused by solar radiation and ambient temperature fluctuations might cause the pier surface concrete to crack. The maximum first principal strain of pier surface concrete in July is approximately 1.21 times greater than the concrete peak tensile strain. Tensile damage of pier concrete rises with cyclic times of solar radiation. Tensile damage of surface concrete rose from 0.495 to 0.566 and 0.610, as exposure time increased from 1 to 10 and 100 years. Reducing the surface short wave absorption rate, increasing concrete specific heat, and decreasing pier wall thickness is beneficial to minimizing long-term tensile damage of pier concrete.
期刊介绍:
EFM covers a broad range of topics in fracture mechanics to be of interest and use to both researchers and practitioners. Contributions are welcome which address the fracture behavior of conventional engineering material systems as well as newly emerging material systems. Contributions on developments in the areas of mechanics and materials science strongly related to fracture mechanics are also welcome. Papers on fatigue are welcome if they treat the fatigue process using the methods of fracture mechanics.