To comprehensively investigate the characteristics of aerodynamic pressures on a tunnel caused by the whole tunnel passage of a high-speed train at different speeds, we conduct a series of three-dimensional numerical simulations. Based on the field test results obtained by other researchers, the input parameters of our numerical simulation are determined. The process of a high-speed train travelling through a railway tunnel is divided into three stages according to the spatial relationship between the train and tunnel. Stage I: before train nose enters the entrance; Stage II: while the train body runs inside the tunnel; Stage III: after the train tail leaves the exit. The influences of high-speed train speed on the tunnel aerodynamic pressures of these three stages are systematically investigated. The results show that the maximum peak pressure value decreases with increasing distance from the entrance and increases with increasing train speed in Stage I. There is an approximately linear relationship between the three types of maximum peak pressure (positive peak, negative peak, and peak-to-peak pressures) and the power of the train speed in Stage II. These three types of maximum peak pressure values of the points near tunnel portals increase with increasing train speed in Stage III. Moreover, these three types of maximum peak pressure in the tunnel’s middle section at different train speeds are more complex than those near the tunnel portals, and there is one or more turning points due to the superimposed effects of different pressure waves.

Jianming Du

Qian Fang

Jun Wang

Gan Wang

Applied Sciences

Applied Sciences (ISSN 2076-3417) provides an advanced forum on all aspects of applied natural sciences. It publishes reviews, research papers and communications. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced. Electronic files and software regarding the full details of the calculation or experimental procedure, if unable to be published in a normal way, can be deposited as supplementary electronic material.

The journal "Applied Sciences (Switzerland)" (ISSN 2076-3417) provides an advanced forum for all aspects of applied natural sciences. It publishes reviews, research papers, and communications, aiming to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There are no restrictions on the length of the papers, and full experimental details must be provided to ensure reproducibility. If the complete details of calculations or experimental procedures cannot be published in the usual manner, electronic files and software can be deposited as supplementary electronic material.

《Applied Sciences (Switzerland)》期刊（ISSN 2076-3417）为应用自然科学的各个方面提供了一个先进的论坛。期刊发表综述、研究论文和通讯，旨在鼓励科学家尽可能详细地发布他们的实验和理论结果。对论文的长度没有限制，必须提供完整的实验细节，以便他人能够重复实验。如果无法以正常方式发布的计算或实验程序的完整细节，电子文件和软件可以作为补充电子材料存放。

Category	Quartile
综合性期刊	4
综合性期刊, 化学综合	3
综合性期刊, 工程综合	4
综合性期刊, 材料科学综合	4
综合性期刊, 物理应用	4

Influences of High-Speed Train Speed on Tunnel Aerodynamic Pressures

ivySCI AI Smartly Parses PDF, Answers Researchers' Questions, and Helps You Understand Papers in Seconds

Journal Info

Category	Quartile
PHYSICS, APPLIED	2