Study on Materials and Structure of the Tube Wall of Evacuated Tube Transportation

Abstract

Evacuated Tube Transportation (ETT) will be the fastest traffic mode on earth in the future, possible over 6000km/h, and low energy consumption, no air pollution, no noise and relatively safe. Different from pipelines for transporting oil, gas and water, the tube of ETT will bear the maglev vehicles running in it, and it should be with reliable airproof ability for keeping required vacuum in the tube. It’s significant to seriously select the proper materials for creating tube wall and design reasonable tube wall structure. In this paper two materials to be used most possibly, steel and concrete, are considered. In addition, some types of tube wall structure are analyzed. This paper also compares the differences on the manufacture, process and construction of ETT tube between the pure steel tube and concrete composite tube. At last, some conclusions are given, some suggestions are put up, and some issues that need to be further analyzed and studied are listed.

Numerical simulation and analysis of aerodynamic drag on a subsonic train in evacuated tube transportation

“…Igh-speed Maglev evacuated tube transportation (ETT) is able to run at supersonic and even hypersonic speeds [1][2][3][4][5]. The operation speed at the initial stage should be in the subsonic range of 500-1000 km/h.…”