1. State Key laboratory of Hydroscience and Engineering, Department of Hydraulics, Tsinghua University, Beijing 100084, China;
2. Research Institute of Highway, Ministry of Transport, Beijing 100088, China
Analysis of Transverse Crack on Top Slab of Prestressed Concrete Box Girder
WANG Bing-jian1,2, LIU Tian-yun1, LI Qing-bin1
1. State Key laboratory of Hydroscience and Engineering, Department of Hydraulics, Tsinghua University, Beijing 100084, China;
2. Research Institute of Highway, Ministry of Transport, Beijing 100088, China
摘要According to the construction characteristics and the specialties of stress distribution in the top slab of a prestressed concrete box girder bridge, two improvements on the submodel method have been made on the basis of the conformation of the internal force. The influence of the construction method is considered by the entire bridge analysis, and the influence of the transverse factors on the transverse normal stress is considered on the basis of the submodel. The transverse normal stress distribution patterns of a bridge deck structure under the conditions of different locations in the transverse direction of the bridge and different parameters of carriage axles and prestress losses are analyzed. The main reason that induced longitudinal cracks in the prestressed concrete box girder is studied from the viewpoint of transverse stresses of the bridge deck. Further, a method considering the local mechanical state of a prestressed concrete box girder bridge deck is summarized and can be used as a reference for design and maintenance management.
Abstract：According to the construction characteristics and the specialties of stress distribution in the top slab of a prestressed concrete box girder bridge, two improvements on the submodel method have been made on the basis of the conformation of the internal force. The influence of the construction method is considered by the entire bridge analysis, and the influence of the transverse factors on the transverse normal stress is considered on the basis of the submodel. The transverse normal stress distribution patterns of a bridge deck structure under the conditions of different locations in the transverse direction of the bridge and different parameters of carriage axles and prestress losses are analyzed. The main reason that induced longitudinal cracks in the prestressed concrete box girder is studied from the viewpoint of transverse stresses of the bridge deck. Further, a method considering the local mechanical state of a prestressed concrete box girder bridge deck is summarized and can be used as a reference for design and maintenance management.
基金资助:Supported by the National Key Technologies R & D Program of China during the 11th Five-Year Plan Period(No.2009BAG15B00);and the Major Science and Technology Project of Ministry of Transport during the 12th Five-Year Plan Period(No.2011318223170)
通讯作者:
WANG Bing-jian, bj.wang@rioh.cn
E-mail: bj.wang@rioh.cn
引用本文:
王兵见, 刘天云, 李庆斌. 预应力混凝土箱梁顶板结构纵向裂缝分析方法[J]. Journal of Highway and Transportation Research and Development, 2013, 7(4): 44-49.
WANG Bing-jian, LIU Tian-yun, LI Qing-bin. Analysis of Transverse Crack on Top Slab of Prestressed Concrete Box Girder. Journal of Highway and Transportation Research and Development, 2013, 7(4): 44-49.
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2013, Vol. 7 
