Anchorage Zone Stresses Model of Interior Diaphragm for Segmental Box Girder Bridge
Post-tensioning tendons in segmental box girder bridges are usually anchored in very massive diaphragms. This paper presents an analytical investigation of the anchorage zone stresses for an interior pier diaphragm and a rectangular block model (model of diaphragm anchorage zone). The failure load a...
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Erbil Polytechnic University
2019-12-01
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| Series: | Polytechnic |
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| Online Access: | https://polytechnic-journal.epu.edu.iq/home/vol9/iss2/28 |
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| author | Ghassan M. Werdina Omar Q. Aziz |
| author_facet | Ghassan M. Werdina Omar Q. Aziz |
| author_sort | Ghassan M. Werdina |
| collection | DOAJ |
| description | Post-tensioning tendons in segmental box girder bridges are usually anchored in very massive
diaphragms. This paper presents an analytical investigation of the anchorage zone stresses for an interior
pier diaphragm and a rectangular block model (model of diaphragm anchorage zone). The failure load
and load-displacement relation for the two cases were compared, a typical diaphragm for a segmental
box girder bridge with external prestressing tendons and rectangular block model were analyzed by
finite element program (ABAQUS). The anchorage devices were subjected to a prestressing design load
which was based on the ultimate strength of the tendons. The magnitude and distribution of stresses
were plotted through different paths for both the diaphragm and the block model; also the contours
of stress distribution for the diaphragm and block model were compared. The results showed that the
stresses and failure load for the diaphragm and rectangular block model were very close. |
| format | Article |
| id | doaj-art-4f4e64fa80574b03b75676f50b50910b |
| institution | Kabale University |
| issn | 2707-7799 |
| language | English |
| publishDate | 2019-12-01 |
| publisher | Erbil Polytechnic University |
| record_format | Article |
| series | Polytechnic |
| spelling | doaj-art-4f4e64fa80574b03b75676f50b50910b2024-11-24T08:02:19ZengErbil Polytechnic UniversityPolytechnic2707-77992019-12-0192171177https://doi.org/10.25156/ptj.v9n2y2019.pp171-177Anchorage Zone Stresses Model of Interior Diaphragm for Segmental Box Girder BridgeGhassan M. Werdina0Omar Q. Aziz1Department of Dams and Water Resources, Salahaddin University, Erbil, Kurdistan Region, Iraq,Department of Civil Engineering, College of Engineering, Salahaddin University, Erbil, Kurdistan Region, Iraq.Post-tensioning tendons in segmental box girder bridges are usually anchored in very massive diaphragms. This paper presents an analytical investigation of the anchorage zone stresses for an interior pier diaphragm and a rectangular block model (model of diaphragm anchorage zone). The failure load and load-displacement relation for the two cases were compared, a typical diaphragm for a segmental box girder bridge with external prestressing tendons and rectangular block model were analyzed by finite element program (ABAQUS). The anchorage devices were subjected to a prestressing design load which was based on the ultimate strength of the tendons. The magnitude and distribution of stresses were plotted through different paths for both the diaphragm and the block model; also the contours of stress distribution for the diaphragm and block model were compared. The results showed that the stresses and failure load for the diaphragm and rectangular block model were very close.https://polytechnic-journal.epu.edu.iq/home/vol9/iss2/28anchorage zone;bridge;diaphragm;post-tensioning;segmental box girder |
| spellingShingle | Ghassan M. Werdina Omar Q. Aziz Anchorage Zone Stresses Model of Interior Diaphragm for Segmental Box Girder Bridge Polytechnic anchorage zone; bridge; diaphragm; post-tensioning; segmental box girder |
| title | Anchorage Zone Stresses Model of Interior Diaphragm for Segmental Box Girder Bridge |
| title_full | Anchorage Zone Stresses Model of Interior Diaphragm for Segmental Box Girder Bridge |
| title_fullStr | Anchorage Zone Stresses Model of Interior Diaphragm for Segmental Box Girder Bridge |
| title_full_unstemmed | Anchorage Zone Stresses Model of Interior Diaphragm for Segmental Box Girder Bridge |
| title_short | Anchorage Zone Stresses Model of Interior Diaphragm for Segmental Box Girder Bridge |
| title_sort | anchorage zone stresses model of interior diaphragm for segmental box girder bridge |
| topic | anchorage zone; bridge; diaphragm; post-tensioning; segmental box girder |
| url | https://polytechnic-journal.epu.edu.iq/home/vol9/iss2/28 |
| work_keys_str_mv | AT ghassanmwerdina anchoragezonestressesmodelofinteriordiaphragmforsegmentalboxgirderbridge AT omarqaziz anchoragezonestressesmodelofinteriordiaphragmforsegmentalboxgirderbridge |