| An important indicator of economic development is the rapid development of the transport system. In recent years, China have built many bridges,so how to evaluate the bearing capacity of the bridges becomes more and more practical and important. However, the existing evaluation method based on static load test is time-consuming, so it is worthwhile to find out a rapid and more efficient evaluation method.Based on the above-mentioned purposes , some preliminary study on bearing capacity evaluation of small span reinforced concrete girder bridge based on field tested influence line has been done in this paper. Based on the field tested influence line of a simply supported reinforced concrete girder bridge,.three kind of new evaluation metheds have been studyed.The first merhed is called direct comparison method,which is using the tested influence line to compare the calculated influence line directly and then make judgement,the second methe is called calculation evaluation methed based on tested influence line,which is using the tested influence line to calculate the static response of the bridge under the design load,the third method is called model modification evaluation method,which is using the tested influence line to calibrate and modify the FEM model,and then using the calibrated and more acurate model to predict the bearing capacity of the structure.Comparision study with the static load test has also been done.The results show that the new metheds are feasible. |
