Tunnel section area optimization method, device and equipment

Abstract

The invention discloses a tunnel section area optimization method which comprises the following steps: determining a first outside air pressure fluctuation value when a train passes through a tunnel under the condition that the tunnel section clearance area is a first value, and determining a second outside air pressure fluctuation value when the train passes through the tunnel under the conditionthat the tunnel section clearance area is a second value, wherein the first value is greater than the second value; determining a first in-train air pressure fluctuation value corresponding to the train under the condition of the first value according to the sealing index of the train and the first out-train air pressure fluctuation value; determining a second in-train air pressure fluctuation value corresponding to the train under the condition of the second value according to the sealing index and the second out-train air pressure fluctuation value; and according to the fluctuation amplitudes of the first in-train pressure fluctuation value and the second in-train pressure fluctuation value in the preset time, determining the optimal value of the tunnel section clearance area, wherein the optimal value meets the in-train pressure fluctuation evaluation standard of the train. Meanwhile, the invention further discloses a tunnel section area optimization device and equipment.

Description

technical field [0001] The invention relates to tunnel design technology, in particular to a tunnel cross-sectional area optimization method, device and equipment. Background technique [0002] Magnetic levitation technology (English: Electromagnetic Levitation, Electromagnetic Suspension), referred to as EML technology or EMS technology, refers to a technology that uses magnetic force to overcome gravity to levitate objects. The maglev train can well meet the point-to-point transportation needs between large cities in China, bring people a more comfortable life and enjoyment, and promote high-speed and sustainable economic development. However, the design of the clearance area of ​​the maglev train tunnel section is the difficulty and the key point of the maglev tunnel project. If the clearance area of ​​the tunnel section is too small, the pressure wave changes in the tunnel will affect the driving safety of the train and the comfort of the passengers in the train; if the...

AI Technical Summary

Problems solved by technology

If the clearance area of ​​the tunnel section is too small, the pressure wave changes in the tunnel will affect the driving safety of the train and the comfort of the passengers in the train; if the clearance area of ​​the tunnel section is too large, the construction cost of the tunnel will be too high , affecting the economics of high-speed maglev tunnel construction, etc.

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