Experimental Investigation on Fatigue Behaviour of Prestressed Concrete Box-Girders
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Bibliographic Details
| Author(s): |
Ming Yuan
(Changsha University of Science & Technology, Changsha, Hunan, China)
Donghuang Yan (Changsha University of Science & Technology, Changsha, Hunan, CHINA) |
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Congress: Challenges in Design and Construction of an Innovative and Sustainable Built Environment, Stockholm, Sweden, 21-23 September 2016 | ||||
| Published in: | IABSE Congress Stockholm, 2016 | ||||
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| Page(s): | 1240-1245 | ||||
| Total no. of pages: | 6 | ||||
| Year: | 2016 | ||||
| DOI: | 10.2749/stockholm.2016.1235 | ||||
| Abstract: |
Prestressed concrete (PC) box-girder bridge is one of the most widely used bridge structure. The diagonal cracks of webs may occur in many existing PC box-girder bridges due to complicated effects. The classical analysis is not sure the existing diagonal cracks of webs may steady or propagate. An experimental study is proposed to investigate the high-cycle fatigue behaviour of prestressed concrete box-girders. Special focus is on the shear diagonal cracks in the webs of girders. Laboratory fatigue tests were designed and conducted to study the propagation of shear diagonal crack of PC box-girder specimens under cyclic loadings. The development of stirrup strain, propagation characteristics of diagonal crack and the related factors are discussed in detail. Following this, A finite element (FE) model for concrete damage of PC box girder under high-cycle fatigue loading is established to investigate the crack propagation behaviour. Finally, several conclusions are drawn based on the proposed study. |
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| Keywords: |
fatigue FE model concrete damage PC box-girder Bridge diagonal crack
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