Formulated Tension Design for Post-tensioned Anchorage Zones and Relevant Equations in Chinese Concrete Bridge Design Code
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Bibliographic Details
| Author(s): |
Zhao Liu
(School of Civil Engineering, Southeast University, Nanjing, China)
Zhiqi He (School of Civil Engineering, Southeast University, Nanjing, China) Linyun Zhou (School of Civil Engineering, Southeast University, Nanjing, China) |
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Symposium: Engineering the Future, Vancouver, Canada, 21-23 September 2017 | ||||
| Published in: | IABSE Symposium Vancouver 2017 | ||||
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| Page(s): | 600-606 | ||||
| Total no. of pages: | 7 | ||||
| Year: | 2017 | ||||
| DOI: | 10.2749/vancouver.2017.0600 | ||||
| Abstract: |
In post-tensioned concrete bridges, issues of the anchorage zone may occur due to high compressive stresses immediately ahead of the anchorage device and substantial tensile stresses normal to the tendon axis. The versatility of post-tensioned concrete zone still requires more researches to develop systematic and practical design procedures. Based on the compression dispersion model, unified expressions for the bursting stresses and bursting force are formulated. Compared with the bursting force expression in AASHTO highway bridge design specification, the proposed equation is more advantageous by taking the parameters of anchor force eccentricity and inclined angle into consideration. The research results have been adopted as specified equations for computing the tension effects of post-tensioned anchorage zones in the newly updated Chinese concrete bridge design code. |
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| Keywords: |
concrete bridge design code post-tensioned anchorage zone STM bursting stress bursting force
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