Rigid-framed Arch Bridge Inspection And Evaluation Of The Calculation

Bridge is the important component element of communications and transport,is the major matter foundation of human society’s progress. Ancient working people use their wisdom created the arch bridge, because of its great caPacity across, beautiful shape, better durability, easy to use local materials etc, and thus arch bridge is widely used gradually. Rigid-framed arch bridge is in truss arch bridge, inclined leg just bridging etc developed on the basis of a new bridge, belong to the high times have thrust the static set structure. Rigid-framed arch bridge has less component, light quality, integral sex is good, rigidity, construction is simple, low cost, modelling aesthetic advantages, resulting in active service in a large bridge still exist.But with the increase of traffic flow and bridge the growth of the use time, many rigid-framed arch bridge appear structure, damaged, aging deformation is, cracking and other diseases. The bearing caPacity of the bridge dropped significantly, even become unsafe bridge. If you don’t take measures as early as possible, may cause catastrophic consequences. Because rigid-framed arch bridge itself carrying potential is low, coMPared with other types of bridge, disease appear rate is higher. Normally, long-sPan rigid-framed arch bridge of the most common disease is chord and just the point where cracks, so long as has the disease rigid-framed arch bridge, mostly have this kind of crack. But of reinforced concrete member for, as long as the crack width not more than allow value, also belongs to the normal use. Although there are more against the owner to build rigid-framed arch bridge, but through the analysis of the reason for the disease, should the correct view its carrying caPacity and the use of performance problems.To the existing rigid-framed arch bridge of the disease process, the first to Pass through bridge to the main diseases of testing bridge, understand the use of bridge performance, the bearing caPacity of the bridge were evaluated. According to the test results, make corresponding emergency response measures, evaluate the use situation of the bridge structure. The need for strengthening the bridge, should be based on the analysis of the bridge diseases are scientific and reasonable rePair reinforcement solutions to improve the bearing caPacity of the bridge.This Paper in refer to a large number of professional books and academic thesis, on the basis of the disease of rigid-framed arch bridge made specific analysis, the corresponding reinforcement measures. And with the LangHe bridge for engineering background and the bridge detection and load test, and on the basis of the use of assessing the bridge state, understand the bearing caPacity of the bridge, through the finite element calculation of structure software, and analyses the rigid-framed arch bridge, the structural behavior of the node, analyzes its produce the cause of the disease. Combined with the actual situation and the calculation and analysis, this Paper finally rigid-framed arch bridge design, construction, operation problems are given reference opinions,hope for similar Bridges carry disease control arch for reference.