Fatigue Damage Study of Prestressed Concrete Bridges
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Bibliographic Details
| Author(s): |
Suraj Parkash
Ram Kumar |
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Symposium: Improving Infrastructure Worldwide, Weimar, Germany, 19-21 September 2007 | ||||
| Published in: | IABSE Symposium Weimar 2007 | ||||
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| Page(s): | 530-531 | ||||
| Total no. of pages: | 7 | ||||
| Year: | 2007 | ||||
| DOI: | 10.2749/weimar.2007.0161 | ||||
| Abstract: |
Fatigue problem may arise in concrete structures which are subjected to repetitive cycling loading. Fatigue may also endanger the durability of prestressed concrete (PSC) bridges due to fatigue in rebars and prestressing strands. Very little research has been done on experimental work of PSC structures under fatigue loading. The present research work deals with the PSC beams subjected to cyclic loading which is simulated by repetitive traffic load. The beams have been tested for ultimate collapse load also. The deflection pattern for the bonded and unbonded prestressed beams proves the validity of theoretical result. The experimental results of fatigue tests on bonded and unbonded beams show the development of flexural cracks along the depth and near the mid span portion of the beam under designed live load which provides information about the service span of a bridge under extreme loading case. |
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| Keywords: |
fatigue failure cracking collapse post-tensioning cyclic loading ultimate prestressing levels repetitive
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