sci-干接接缝与胶接接缝在桥梁中的应用及性能研究.pdf

Construction and Building Materials 38 (2013) 931–940 Contents lists available at SciVerse ScienceDirect Construction and Building Materials journal homepage: /lo cate/conbuildmat Performance evaluation of dry and epoxy jointed segmental prestressed box girders under monotonic and cyclic loading S. Saibabu ⇑, V. Srinivas, Saptarshi Sasmal, N. Lakshmanan, Nagesh R. Iyer CSIR, Structural Engineering Research Centre, CSIR Campus, Taramani, Chennai 600 013, India h i g h l i g h t s Investigation on a scaled model of precast post-tensioned box-girder bridge deck. Performance of epoxy and dry jointed segmental box girder under monotonic loading. Performance of segmental box girders under cyclic loading. Flexural strength of dry jointed specimen is less than the epoxy segmental girder. Studying the role of type of joint on overall performance of the segmental girder. a r t i c l e i n f o a b s t r a c t Article history: A large number of post-tensioned prestressed concrete segmental bridges are being constructed world- Received 2 May 2012 wide. Use of different materials and shear keys will have varying effects on the performance of segmental Received in revised form 30 August 2012 girders even during the service load. The type of joints, quality of joint, degree of mechanical actions and Accepted 21 September 2012 the joint materials will contribute to the variation in the behaviour of the segmental girders. Hence, the Available online 3 November 2012 need for investigation on the epoxy jointed se