High-speed railway tunnel structure

Abstract

The invention provides a high-speed railway tunnel structure. The high-speed railway tunnel structure is characterized in that both side surfaces or the top of a tunnel lining is provided with openings which are communicated with the atmosphere, 3-5 openings are distributed in the full length direction of the tunnel, the neighboring openings are spaced at equal intervals, and the opening close to the portal of the tunnel is 20-50 m away from the portal. According to the high-speed railway tunnel structure, 3-5 the openings are arranged on the side walls or the top of the tunnel lining, so that the transient pressure inside a locomotive and the micropressure peak value of the portal can be reduced, the micropressure wave effects of the portal can be released, and the locomotive additional air resistance of a long tunnel can be reduced obviously; meanwhile, the energy of expansion waves reflected back to the tunnel from the exit of the tunnel can be reduced, further the negative pressure inside opencuts and on the outer wall of the locomotive can be effectively released, and the fatigue damage of the opencut structure and auxiliary facilities due to aerodynamic load can be reduced. Besides, the high-speed railway tunnel structure is restricted little by surrounding terrains and has high adaptability, and meanwhile, is low in construction cost and highly practical.

Description

technical field [0001] The invention relates to the field of high-speed railway tunnels, in particular to a high-speed railway tunnel structure. Background technique [0002] When a high-speed train passes through a tunnel, a series of aerodynamic effects will occur, including: the pressure in the tunnel suddenly rises, causing a transient pressure in the locomotive, and the transient pressure will generate a pressure difference in the eardrum of the human body, causing the passenger's eardrum Discomfort, even dizziness and vomiting, seriously affect the comfort and health of passengers. Pneumatic blasting noise, train window vibration, and rapid vibration of nearby light structures (house doors and windows) and other micro-pressure wave phenomena occur at the exit of the tunnel, resulting in serious noise pollution and seriously affecting the environment around the exit of the tunnel and the daily life of residents. The locomotive, tunnel lining structure and auxiliary fac...

AI Technical Summary

Problems solved by technology

Improving the airtight performance of the locomotive can effectively reduce the transient pressure inside the locomotive and improve the comfort of passengers, but it cannot solve the problems of micro-pressure wave effect at the opening, aerodynamic load, and additional air resistance of the locomotive

[0004] The various existing measures to alleviate the aerodynamic effect of high-speed railway tunnels are relatively simple. Sometimes due to the limitation of the topography of the tunnel entrance, it is impossible to install a buffer structure at the tunnel entrance, nor can it play a role in comprehensively mitigating the aerodynamic effect.

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