Disease Of Rigrd-Framd Arch Bridge Inspection And Study For Reinforce

Rigid-framd arch bridge is a bridge-type which has simple structure, beautiful formation, and well force performance. But it is discovered that its bearing capacity is not enough and transverse rigidity is weak through bridge inspection, its wholeness also is weak, which are result of heavy traffic and overload. In this article, theory of bridge inspection and methods of reinforce are explained by the numbers through the inspection of a rigid-framd arch bridge, also the theory and methods of bridge reinforce are explained detailedly. In the article, bearing capacity of rigid-framd arch bridge is analyzed to use finite element analytic software MIDAS/CIVIL. Response of static force (bending moment, shearing force, shaft force, stress and displacement), dynamic property and stability of the bridge are analyzed and the results about different operation time of the bridge are contrasted. It is got that it has well bearing capacity , dynamic property and stability in the ideal condition and to satisfy the request of standard of China. But now, it is damaged because of some factor, for example, environment and heavy traffic, so the bearing capacity is weaker, especially dynamic property bring down obviously. Also, microbend deck of rigid-framed arch bridge is analyzed with nonlinearity and the factors which result of the crack of microbend deck are got. At last, according to the conclusion got from inspection and analyzed the reinforce program are constituted, and apply midas/civil to static force, dynamic property and stability got that effect of reinforce is obvious.