The Qinghai-Tibet Railroad

摘要

Do you like a real challenge? How about this one. Suppose you are an engineer and are tasked with the following situation. You are asked to build a structure that is over 600 km long that passes through a large number of different terrains. The structure must maintain long-term stability and be designed to account for possible climate change either through a warming or cooling climate. Moreover, it must be able to withstand the occasional very high dynamic vertical load.