Research On The Bridge Test And Evaluating Methods Based On Bridge Driving Dynamic Response

Bridges is the throat of highwany and the lifeline of transportation. Therefore ensure bridge structure in good working condition is the key to guarantee highway smooth. Driving dynamic response measurement belongs to one part of dynamic test method to determine bridge structure performance and use it evaluate bridge structure performance is the direction of future research benefit from it simple and reliable, cost savings and less influence on traffic advantages. But the methods of driving dynamic response to evaluation bridges in our country developmental retardation, it has some deficiencies, this leads to related experimental research report listed a large number of dynamic test data and graphics but cannot evaluation structure performance become the normal phenomenon.Therefore on the basis of make full use of the vehicle dynamic test data to further studies the methods of driving dynamic response to evaluation bridges, form the objective and reasonable test evaluation methods of bridge dynamic response is imperative.In this paper, on the basis of large amount of measured data, use the mathematical statistics and calculation analysis methods to carry out driving dynamic response to evaluation bridges method research. In this paper, the main research contents include: analysis of the current bridge structure dynamic response evaluation methods present situation and deficiencies; The influence factors of impact coefficient stochastic analysis; Impact factor calculation method research; Method to improve objectivity of impact coefficient test result analysis; The method of search measured influence line for the simply supported beam; Based on the measured influence line to evaluation structure bearing capacity; Discuss the correlation of vibration acceleration and impact factor; The method of static and dynamic parameters comprehensive evaluation research and discuss.