Research On The Structural Capability Evaluating Methods Of Arch Bridge Based On Tested Dynamic Parameter

The dynamic evaluation method of bridge's bearing capacity is always the research hotspot in the academic field. By far, there is no well-rounded theory that can be used in practice because of the test data's discretization. The span of arch bridge is usually large, the task of static test is complicated, it is economical and essential to look after a fast evaluation method for assessing structure's load bearing capacity. Based on this, 17 arch bridges in the actual projects as a sample were selected, the connection between static test result and dynamic test result was built in this paper in order to assess the structure's bearing capacity by dynamic characteristics of bridge. The main content are as follows:Firstly, Useing the quantified methods to researching on impact coefficient based on the test data. It can be used for assessing the structure's mechanical characteristic by comparing with the results of the standard formula;Analysis on evaluation structural carrying capacity generally based on the impact coefficient and static check coefficient.Secondly, Evaluation method of frequency coefficient is built up to evaluated arch bridge's bearing capacity. The method is implemented by the span of frequency coefficient,which is ascertained though the relation between frequency coefficient and deflection and strain coeffcient. Vertify dynamic characteristics of structure by real bridge test.