Bridges Disease Prevention And Treatment Measures

The thesis analyses two common diseases that are bridge deck pavement destroying and the bump of vehicles on heads of bridge.According to the present situation of bridge deck pavement destroying, the characteristics of destroying are analyzed, and the concept of reasonable thickness of bridge deck pavement is proposed. On the basis of shearing destroying model, the method of calculating thickness of bridge deck pavement is put forward, and the living example of consolidating bridge is given.On basis of the present situation of the bump of vehicles on heads of bridge, the causes of leading to bump of vehicle on bridges head are analyzed, the prevention and cure measures of disease are put forward.One of the measures of the prevention of vehicle from bump is to place approach slabs on bridges head, in this paper, the behavior of typical approach slab at the service load is emphatically analyzed, as well as some main factors which influence load of approach slab梑earing behavior, such as length, depth, skew angle, unsupporting length, rigidity of foundation and positions of foundation beam, some important conclusions are provided, which can be referenced in the design and construction of approach slab.