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中文摘要：
针对目前装配式空心板梁桥在使用过程中由于＂单板受力＂现象而出现的铰缝病害,利用有限元软件ANSYS建立装配式简支预应力混凝土空心板梁桥计算模型,对施加体外预应力大小、预应力筋顺桥向布设位置、预应力筋距梁底距离、铺装层厚度以及铰缝深度作了研究,并以加固前后荷载横向分布影响线的变化为评价标准,分析了不同方法的加固原理及加固效果。得出了采用相应加固方法可以显著增加空心板梁桥的横向联系和整体性,有效改善＂单板受力＂这一病害。
英文摘要：
Aiming at the hinge joint disease of fabricated bridge caused by the phenomenon of ＂single beam bearing＂ in service, a calculation model of simply supported prestressed concrete fabricated hollow slab bridge is set up to study the outside pre-stress, the position of prestressed steel bar along direction of the bridge, the distances from prestressed reinforcement to the beam bottom, the thickness of pavement layer and the depth of hingle joint by using the ANSYS finite element software. Then, the reinforce theory and effect of different reinforcement methods mentioned above are analyzed according to the change of the load transverse influence line before and after reinforcement. The results show that the methods could obviously increase the transverse contact and integrity of the hollow slab and improve the disease of ＂single beam bearing＂.
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