Study On Bridge Damage Detection Technique Which Based On Static And Dynamic Testing Data

Not only a lot of investment is required in the civil engineering, but also the service time should last hundreds of years because of its important influence to now and tomorrow of our country. So is the bridge structure. With the increase of traffic and prolong of the service time of the bridge structure, the appearances that the decrease in the performance, aging and damage happen in quite a lot of the bridge structure. Therefore, requirements can't be satisfied. If the damage is not properly inspected and detected, it is possible to lead to the casualty and collapse of the bridge. Even the accident can bring great loss in economic. And that, for the bridge structure, replacing the member and rebuilding will influent the normal traffic. So more attention should be paid to the damage diagnosis of the existing bridge, reliability evaluation, maintenance and strengthening technique for the engineers and technicians. Further study is required to improve the resisting capacity and extend the service time for the existing bridge in purpose to save the building fund.The study on damage identify on bridge structure is a new problem which is along with the development of structure engineering study and the actual need of the project. Traditional bridge structure analyze theory mainly studies on strength,stiffness and stability to insure the bridge structure reliability. At present, the relational theory has reached to a very ripe level. But the designer can't ensure the established structure which he designed would not come forth problems.Dynamic testing technique has extensively been used on fault diagnosis,load recognize and dynamical modification and any other problems in the area of navigation,spaceflight,precise machine tool and so on. The method based on bridge damage detection technique is belonged to integer damage detection technique. It could obtain the whole information of structure. Especially on the structure covered-up part. And the nicety degree of the detected result less depends...