Bridge-instead-of-embankment Design Concept for Qinghai-Tibet Railway

The paper gives a brief introduction to the design concept of “bridge instead of embankment" for Qinghai-Tibet Railway, and illustrates an optimised structure style and corresponding considerations for the bridges built in unsteady frozen ground zone in Qinghai-Tibet Plateau. The dynamic simulation analysis of train-bridge system fro verifying its safety level and Sperlin ride index during operation and Excel VBA programming technology for improving design efficiency are also mentioned in this paper.