Analysis Of Theory And Tests Study Of Damatic Characteristic Of The Main Bridge Of JiLin Jiuzhan Songhuajiang Highway Bridge

This paper is analysis of theory and tests study of damatic characteristic of the main bridge of JiLin Jiuzhan Songhuajiang Highway Great Bridge. Apply FEM (finite element method) to disperse finite element about structure of main bridge. Establishing intrinsic vibration equation with Dalangbeir principle. Finding intrinsic frequency of structure of the bridge with FEM, Calculating vibration model about structure with Yakebi method. Simultaneously, make use of moving loads to test dymatic characteristic using random vibration model technology to the analysis of test signal. Researching method is taked combine theory analysis and test bridge, each other test and verify. Thus geting science evaluation to dyrnatie reliability of Jiuzhan bridges supplying science foundation to consummation and development of a bridge design theory and used security of a bridge.