Abstract
With the rapid development of China’s railways and the extension of high-speed railways in all directions, China’s railway departments have realized that the original design concept and design load can no longer meet the current requirements of railway operation. This paper mainly studies the design of the live load standard evaluation scheme for railway Bridges based on VR technology. This paper first introduces the theory of load experiment and analyzes the live load experiment and its standard in detail. Then, this paper analyzes the live load standard evaluation scheme of railway Bridges under VR technology, and carries out experiments. The experimental results show that when the spacing between main beams is 2.1m and 4m, the empirical distribution does not reject the test of normal distribution, lognormal distribution and extremum-I distribution, but the test value of normal distribution is the smallest, indicating that the distribution type of transverse distribution coefficient of load is closer to normal distribution. The results of this paper are helpful for the railway departments to carry out live load experiments on railway Bridges and promote the development of load evaluation of railway Bridges.
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