An Improved Equation for Predicting Compressive Stress in Posttensioned Anchorage Zone
Validity of the approximate equation for predicting compressive stress in the posttensioned anchorage zone presented in the AASHTO LRFD Bridge Design Specifications was investigated in this study. Numerical analysis based on the finite element method (FEM) and theoretical analysis showed that the AA...
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2020/5635060 |
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| author | Young-Ha Park Moon-Young Kim Jong-Myen Park Se-Jin Jeon |
| author_facet | Young-Ha Park Moon-Young Kim Jong-Myen Park Se-Jin Jeon |
| author_sort | Young-Ha Park |
| collection | DOAJ |
| description | Validity of the approximate equation for predicting compressive stress in the posttensioned anchorage zone presented in the AASHTO LRFD Bridge Design Specifications was investigated in this study. Numerical analysis based on the finite element method (FEM) and theoretical analysis showed that the AASHTO formula gives relatively accurate stress values when the effect of duct holes is neglected. However, it was found that the formula can significantly overestimate the stresses in the actual prestressed concrete member with spaces occupied by ducts. Therefore, an improved equation was proposed for the existing AASHTO equation to consider the effect of the duct holes on the stress distribution. This resulted in relatively accurate prediction of the distribution and magnitude of the compressive stresses even with the presence of the duct holes. The proposed equation was also validated by comparing with the stresses measured in the test of a posttensioned full-scale specimen. This study is expected to contribute to the design of the anchorage zone in prestressed concrete structures by suggesting a more reasonable way to assess the appropriateness of anchorage devices. |
| format | Article |
| id | doaj-art-52a483b6871247739e6b44aa2a91a255 |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-52a483b6871247739e6b44aa2a91a2552025-02-03T06:06:38ZengWileyAdvances in Civil Engineering1687-80861687-80942020-01-01202010.1155/2020/56350605635060An Improved Equation for Predicting Compressive Stress in Posttensioned Anchorage ZoneYoung-Ha Park0Moon-Young Kim1Jong-Myen Park2Se-Jin Jeon3Jiseung C&I, Seoul 06120, Republic of KoreaSchool of Civil and Architectural Engineering, Sungkyunkwan University, Suwon-si 16419, Republic of KoreaJiseung C&I, Seoul 06120, Republic of KoreaDepartment of Civil Systems Engineering, Ajou University, Suwon-si 16499, Republic of KoreaValidity of the approximate equation for predicting compressive stress in the posttensioned anchorage zone presented in the AASHTO LRFD Bridge Design Specifications was investigated in this study. Numerical analysis based on the finite element method (FEM) and theoretical analysis showed that the AASHTO formula gives relatively accurate stress values when the effect of duct holes is neglected. However, it was found that the formula can significantly overestimate the stresses in the actual prestressed concrete member with spaces occupied by ducts. Therefore, an improved equation was proposed for the existing AASHTO equation to consider the effect of the duct holes on the stress distribution. This resulted in relatively accurate prediction of the distribution and magnitude of the compressive stresses even with the presence of the duct holes. The proposed equation was also validated by comparing with the stresses measured in the test of a posttensioned full-scale specimen. This study is expected to contribute to the design of the anchorage zone in prestressed concrete structures by suggesting a more reasonable way to assess the appropriateness of anchorage devices.http://dx.doi.org/10.1155/2020/5635060 |
| spellingShingle | Young-Ha Park Moon-Young Kim Jong-Myen Park Se-Jin Jeon An Improved Equation for Predicting Compressive Stress in Posttensioned Anchorage Zone Advances in Civil Engineering |
| title | An Improved Equation for Predicting Compressive Stress in Posttensioned Anchorage Zone |
| title_full | An Improved Equation for Predicting Compressive Stress in Posttensioned Anchorage Zone |
| title_fullStr | An Improved Equation for Predicting Compressive Stress in Posttensioned Anchorage Zone |
| title_full_unstemmed | An Improved Equation for Predicting Compressive Stress in Posttensioned Anchorage Zone |
| title_short | An Improved Equation for Predicting Compressive Stress in Posttensioned Anchorage Zone |
| title_sort | improved equation for predicting compressive stress in posttensioned anchorage zone |
| url | http://dx.doi.org/10.1155/2020/5635060 |
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