Time-dependent behavior of full-scale precast post-tensioned (PCPT) girders: Experimental and finite element analysis
Excessive volumetric changes associated with shrinkage and non-uniform moisture and heat distribution along long-span girders induce unwanted curvatures. This study aims at investigating both short- and long-term measurements of various quantities involving midspan deflections, tendon strains, longi...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-12-01
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| Series: | Case Studies in Construction Materials |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509522004429 |
| _version_ | 1818194182144000000 |
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| author | Panuwat Joyklad Nazam Ali Krisada Chaiyasarn Suniti Suparp Qudeer Hussain |
| author_facet | Panuwat Joyklad Nazam Ali Krisada Chaiyasarn Suniti Suparp Qudeer Hussain |
| author_sort | Panuwat Joyklad |
| collection | DOAJ |
| description | Excessive volumetric changes associated with shrinkage and non-uniform moisture and heat distribution along long-span girders induce unwanted curvatures. This study aims at investigating both short- and long-term measurements of various quantities involving midspan deflections, tendon strains, longitudinal steel bar strains, concrete strains, and thermal changes in precast-post-tensioned (PCPT) girders. A total of 2 PCPT girders were cast in this study with symmetrical structural and geometrical details. Post-tensioning of the first and second girders was performed on the 28th and 120th days of their casting, respectively. Long-term measurement was performed on the first girder. It was observed that all measured parameters increased swiftly during post-tensioning. During the initial 30 days after post-tensioning, a gradual increase in all parameters was observed, whereas all measured parameters exhibited negligible increase beyond that. A Finite Element Model was generated using ATENA to estimate short-term deflections of PCPT girders during post-tensioning. In general, a good agreement between experimental and analytical midspan deflections was observed. |
| first_indexed | 2024-12-12T00:58:13Z |
| format | Article |
| id | doaj.art-3d2268ac02fa4b4bb78bea98f1ef4446 |
| institution | Directory Open Access Journal |
| issn | 2214-5095 |
| language | English |
| last_indexed | 2024-12-12T00:58:13Z |
| publishDate | 2022-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj.art-3d2268ac02fa4b4bb78bea98f1ef44462022-12-22T00:43:49ZengElsevierCase Studies in Construction Materials2214-50952022-12-0117e01310Time-dependent behavior of full-scale precast post-tensioned (PCPT) girders: Experimental and finite element analysisPanuwat Joyklad0Nazam Ali1Krisada Chaiyasarn2Suniti Suparp3Qudeer Hussain4Department of Civil and Environmental Engineering, Faculty of Engineering, Srinakharinwirot University, Nakhonnayok 26120, ThailandDepartment of Civil Engineering, School of Engineering, University of Management and Technology, Lahore, PakistanThammasat Research Unit in Infrastructure Inspection and Monitoring, Repair and Strengthening (IIMRS), Thammasat School of Engineering, Faculty of Engineering, Thammasat University Rangsit, Klong Luang, Pathumthani, ThailandDepartment of Civil and Environmental Engineering, Faculty of Engineering, Srinakharinwirot University, Nakhonnayok 26120, Thailand; Corresponding author.Center of Excellence in Earthquake Engineering and Vibration, Department of Civil Engineering, Chulalongkorn University, ThailandExcessive volumetric changes associated with shrinkage and non-uniform moisture and heat distribution along long-span girders induce unwanted curvatures. This study aims at investigating both short- and long-term measurements of various quantities involving midspan deflections, tendon strains, longitudinal steel bar strains, concrete strains, and thermal changes in precast-post-tensioned (PCPT) girders. A total of 2 PCPT girders were cast in this study with symmetrical structural and geometrical details. Post-tensioning of the first and second girders was performed on the 28th and 120th days of their casting, respectively. Long-term measurement was performed on the first girder. It was observed that all measured parameters increased swiftly during post-tensioning. During the initial 30 days after post-tensioning, a gradual increase in all parameters was observed, whereas all measured parameters exhibited negligible increase beyond that. A Finite Element Model was generated using ATENA to estimate short-term deflections of PCPT girders during post-tensioning. In general, a good agreement between experimental and analytical midspan deflections was observed.http://www.sciencedirect.com/science/article/pii/S2214509522004429Pre-cast concretePost-tensionedLong-term deflectionFinite element analysis |
| spellingShingle | Panuwat Joyklad Nazam Ali Krisada Chaiyasarn Suniti Suparp Qudeer Hussain Time-dependent behavior of full-scale precast post-tensioned (PCPT) girders: Experimental and finite element analysis Case Studies in Construction Materials Pre-cast concrete Post-tensioned Long-term deflection Finite element analysis |
| title | Time-dependent behavior of full-scale precast post-tensioned (PCPT) girders: Experimental and finite element analysis |
| title_full | Time-dependent behavior of full-scale precast post-tensioned (PCPT) girders: Experimental and finite element analysis |
| title_fullStr | Time-dependent behavior of full-scale precast post-tensioned (PCPT) girders: Experimental and finite element analysis |
| title_full_unstemmed | Time-dependent behavior of full-scale precast post-tensioned (PCPT) girders: Experimental and finite element analysis |
| title_short | Time-dependent behavior of full-scale precast post-tensioned (PCPT) girders: Experimental and finite element analysis |
| title_sort | time dependent behavior of full scale precast post tensioned pcpt girders experimental and finite element analysis |
| topic | Pre-cast concrete Post-tensioned Long-term deflection Finite element analysis |
| url | http://www.sciencedirect.com/science/article/pii/S2214509522004429 |
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