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某高速公路在通车不到两年的时间内,全线桥梁普遍出现以桥面铺装损害为主要表现形式的上部结构损害,养护部门不断进行病害的修补,但经常是旧的病害还没有处理好,新的病害又接连发生,而且开始产生较为严重的桥面连续损坏,严重影响该桥梁的正常使用和车辆的行驶状况及运营安全。该桥梁为多跨装配式20m预应力钢筋混凝土空心板板桥,2～4跨桥面简易连续构造,包括大中桥和特大桥,双排柱式墩台,灌注桩基础,钢筋混凝土
Within a period of less than two years of operation of an expressway, damage to the superstructure, which is mainly manifested as damage to the deck pavement, is commonly found on bridges across the bridge. Conservation departments continuously repair diseases, but often the old diseases have not been properly disposed of , New diseases occurred one after another, and more serious continuous damage to the deck began. This seriously affected the normal use of the bridge and the driving conditions and operational safety of the vehicle. The bridge is a multi-span 20m prestressed reinforced concrete hollow slab bridge with 2 to 4 cross-deck simple continuous structures, including large and medium-sized bridges and super-large bridges, double-row piers, piles, reinforced concrete