The Theory And Numerical Analysis Of The Concrete Crack Of Bridge

The concrete crack problem of bridge is a project practical problem difficult to solve and generally existing. As to bridge structure, the concrete crack is concentrating representation of bridge bug, and it also is the most familiar disease of bridge. The research about the concrete crack of bridge is very important for the quality of the total structure. The crack is a certain discontinuous phenomenon in solid material, crack and concrete are always come out simultaneity. Accompanying with the concrete continuously applied, concrete category continuously creative, and the concrete application being widely used, the research about crack has its constant thorough and development.At first, the dissertation studied the kinds of crack and the reason why the crack produces combining with the actuality of the concrete crack of bridge and discussed the effecting factors of different kinds of crack. At the same time, the dissertation dissertated minutely the principle of the current crack analyzing theories and the character and difference of each, which offered a certain consulting value for similar instance in practice engineering.The dissertation investigated the detailed process of appearing, distributing and developing of crack and concluded the presumable destroy shape and mechanism under all kinds of bearing based on intention theory of concrete.The dissertation probed into the importance of using spacial finite element method to analyze the practice configuration component. Then the dissertationconstituted analyzing model using the structure analyzing software-ansys, andanalyzed the structural anti-crazing, and introduced the detailed process of computing and analyzing using the method meantime. The dissertation concluded the character of bearing, the case of stress distributing and anti-crazing capability via the research about the result of computing.The dissertation put forward the anti-crazing measure of the concrete crack based on the analyzing of mechanical analyze and practice checking computations, which provided the fathering of the following bridge bug with technique premise and decision-making.At last, the dissertation discussed the development trend of the field of bridge concrete crack and brought forward the prospect of the work target which to be done aftertime.