Take the real bridge of Haizhu in Guangzhou as the backgroud, the method to adopt emulation and analyse, draw every performance index in front and at the back of the steel bridge of the battle - the Haizhu bridge is strengthened, have carry on comprehensive evaluation to the Haizhu bridge before and after strengthening, has analysed the contrast in and the operation state of the bridge to strengthening.Bridge comprehensive assessment is it maintain to go on to bridge, structure performance determine , bear ...