桥面铺装层植筋加固空心板梁试验与研究

Hollow Slab Beam Strengthened by Planting Reinforcing Bars in Bridge Deck Pavement

从旧空心板桥拆除的梁体中选取并制作了3片,分别为裸板无铺装层、钢筋混凝土铺装层和对钢筋混凝土铺装层,对植筋加固的空心板梁,进行对比试验。试验采用重物堆载的方式进行,试验结果表明植筋加固可以增进桥面铺装层与桥板的连接,提升结构刚度和改变结构受力形态,为桥面铺装层加固的研究提供了可靠的试验参考。

In this experiment,three beams are chosen from a used hollow slab bridge and one of them is reinforced by planted steel bars in old pavement and others are left intact or cleared away from old pavement for comparison with the first one through static lastage pressing experiments.The research results show that planted steel bars between pavement and beam can enhance the connection,upgrade rigidity and change the flexural be-havior.The study also Provides a reference for research on bridge reinforcement.