Research on Technique Check for Existing Bridge

After a fixed number of years' operation, the work condition for the existing bridge would deteriorate due to the ambient effect, such as concrete aged, crack developed, bar rusted and so on. In other side, overloading of the bridge is larger than before. Thereby, the test is an important thing for realism engineering and long_term project. In this article, we test the fist span and the third span in two aspects, which are dead_loading test and mobile_loading test, then according to the present criterion, we evaluate the major guidelines. So the principal gist and the technique data are presented in this article.