Research On Detection Of The Old Hollow Slab Bridege And Capacity Assessment

With the continuous development of bridge construction, bridge structure in the form and function of the increasing complexity of modern people's quality of life of the bridge more and more attention. After a long-term use, a variety of bridge damage will inevitably occur, so the detection of bridge structures, structural safety monitoring to be conservation, normal use of the guarantee measures. How to conduct quality testing on the bridge structure and safety monitoring has also become a domestic and international academic community, the engineering research focus. Bridge safety inspection by an objective understanding of the bridge not only the status of work, the right to assess the bearing capacity of the bridge, to provide guidance for the safe operation of the bridge, while the maintenance and reinforcement for the bridge to provide technical basis. Therefore, the bridge safety inspection is a very important and of great social and economic significance of the work.After a long road to use the old bridge, bridge a variety of injuries will inevitably occur, so the detection of bridge structures has become the structural safety of the bridge maintenance, normal use of the guarantee measures. Bridge safety inspection by an objective understanding of the bridge not only the status of work, the right to assess the bearing capacity of the bridge, to provide guidance for the safe operation of the bridge, while the maintenance and reinforcement for the bridge to provide technical basis. Therefore, this study detected the old bridge in service and carrying capacity assessment for the title on the bridge inspection and assessment of work done, some conclusions can provide a reference for the bridge inspection work.In this paper, do the following work:1. first introduced the contents of the bridge inspection and assessment of bearing capacity theory, the present experimental test (or check) carrying capacity assessment of bridges generally use two methods, one approach is to assess the structure Checking the technical condition, another approach is to bridge The load test evaluation.2. For this the selected slab bridge, the bridge's visual inspection and nondestructive testing process were described, a summary of test results, the bridge based on the test results show the state of assessing the value of existing technology.3. According to test the contents of the technical state of the bridge structure, the prosecution count, hand-counted paper way Hollow Slab bending and shear capacity and stiffness of the calculation of. Checking the details given process, and Checking the results of the bridge carrying capacity was evaluated.4. selected for this bridge, the bridge of the static test were introduced, including test content, the choice of test holes, equipment and testing procedures for the elaboration and selection of load. Finally, make a static analysis of test results, the carrying capacity of the bridge was evaluated.