A line-to-line drainage structure used in the double-line section of the low-lying low-speed magnetic levitation line

Abstract

The invention discloses a line-to-line drainage structure for double-line sections of medium and low speed magnetic suspension lower lines. The line-to-line drainage structure comprises a foundation bed, a line-to-line drainage device, strong current cable support seats and a water guide layer, wherein the foundation bed is arranged on a roadbed; the line-to-line drainage device is arranged in a drainage groove of the foundation bed and comprises a bottom plate, a first vertical wall, a second vertical wall, drainage holes and vertical wall lugs, wherein a plurality of drainage holes are penetrated in the first vertical wall and the second vertical wall; the quantity of the strong current cable support seats is equal to the quantity of the vertical wall lugs; and the water guide layer is arranged on a top end face of the foundation bed and is used for guiding water into a drainage channel of the line-to-line drainage device. The line-to-line drainage structure disclosed by the invention can well adapt to line-to-line drainage and cable laying of magnetic suspension traffic engineering and can ensure long-term stability and durability of the foundation bed.

Description

Technical field [0001] The invention belongs to the field of railway rail transit, and more specifically, relates to an inter-line drainage structure used for a double-line section of a low- and medium-speed maglev line. Background technique [0002] The low-to-medium-speed maglev rail transit is a new type of transportation. At present, there are few research results at home and abroad, and there are only a few lines in operation all over the world. At present, there are only the mid-to-low-speed maglev railway commercial operation line-Eastern Hill Line that was constructed and opened in Japan in March 2005 and the mid-low-speed maglev railway commercial operation line opened in June 2014 in South Korea. However, China’s low- and medium-speed maglev transportation currently only has the National University of Defense Technology test line, the Qingchengshan test line, and the Tangshan test line, but there are no official lines put into operation, and they are all based on elevat...

AI Technical Summary

Problems solved by technology

It is not economical to set up the foundation alone for the strong electric cable support seat, but there are the following problems when using the line ditch as the foundation:

[0005] First of all, due to the large base size and the transmitted load of the strong current cable support seat, if referring to the wheel-rail high-speed railway system, it is directly placed on the top of the side wall of the inter-line drainage device in the wheel-rail high-speed railway system. The equal-section rectangular drainage ditch with thinner ditch wall thickness does not meet the size requirements, and the equal-section rectangular drainage ditch with thicker ditch wall thickness meets the size requirements but is not economical

[0006] Secondly, in the wheel-rail high-speed railway system, the tops of the side walls on both sides of the line-to-line drainage device are flush and connected with the water-conducting layer. If the safety distance between the base of the cable support and the subgrade surface is not met, directly raising the side wall of the inter-line drainage device as the foundation of the strong electric cable support seat will affect the inter-line drainage of the subgrade surface on the corresponding side

[0007] In addition, as a micro-deformation-controlled line structure, the direct use of inter-line drainage devices in the base section of the wheel-rail high-speed railway double-track line for maglev low-lying lines cannot guarantee the stress balance and long-term long-term stability of the subgrade bed of the maglev low-lying line at the inter-line drainage device. Stability and Durability

Therefore, the inter-line drainage device of the base section of the double track of the wheel-rail high-speed railway cannot be directly used in the maglev traffic project

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