Xiangfu Road Xiangjiang Bridge Load Test Analysis And Assessment

Bridge load test as a tool,not only can evaluate the bearing capacity of bridges,but also can verify the new structure、the technology development and application of construction、the design theory. Therefore, analysis of load test and evaluation of bridges has very high application value..After consulting a large number of professional literature under the premise, based on the study of professional literature, this paper regarded the Xiangfu road bridge in Xiangjiang of which has been built as the object.combined the numerical simulation theoretical analysis with the scene. Analysis on the bridge response parameters in the effect of the static and dynamic load,in order to protect the bridge in the use of time safety and the corresponding scientific data,to evaluate the carring capacity of bridge. The results are as follows:(1) Using the finite element software MIDAS to modeling and simulation,to determine the 6 loading condition,steps and level of the loading and unloading of each condition,the specific location of the main control section and the section.(2) Selecting static load test, get the displacement,deflection and strain values of each section control of bridge in the influence of load test, then compare the measured value and simulation value to know the bridge can satisfy the design specification or not.(3) Selecting dynamic load test, to explore the changeing of response parameters in the influence of dynamic load,of which including treadmill test、jumping test and the brake test.To measure the impact coefficient and the self vibration characteristics of the bridge in the influence of dynamic load test.(4) To evaluate the bearing performance of bridge objectively and get the results, provide scientific basis of the bridge for the completion and future maintenance repair.