Inter-line drainage structure for medium-and-low-speed magnetic-levitation low-altitude double-line district

Abstract

The invention discloses an inter-line drainage structure for a medium-and-low-speed magnetic-levitation low-altitude double-line district. The inter-line drainage structure for the medium-and-low-speed magnetic-levitation low-altitude double-line district comprises a foundation bed, an inter-line drainage device, high-voltage cable supporting bases and a water guiding layer. The foundation bed is arranged on a roadbed. The inter-line drainage device is arranged in a drainage groove of the foundation bed and comprises a base plate, a first vertical wall, a second vertical wall, first drainage holes and vertical wall bosses. The first vertical wall and the second vertical wall are provided with the multiple first drainage holes penetrating through the first vertical wall and the second vertical wall correspondingly. The number of the high-voltage cable supporting bases is consistent with the number of the vertical bosses. The water guiding layer is arranged on the top end face of the foundation bed and used for guiding water into a drainage channel of the inter-line drainage device. The inter-line drainage structure for the medium-and-low-speed magnetic-levitation low-altitude double-line district can be well adapted to inter-line drainage and cable laying of magnetic-levitation traffic engineering, and long-term stability and durability of the foundation bed can be guaranteed.

Description

technical field [0001] The invention belongs to the field of railway rail transit, and more specifically relates to an inter-line drainage structure for a double-track section of a low-lying low-speed magnetic levitation line. Background technique [0002] Medium and low-speed maglev rail transit is a new type of transportation. At present, there are few research results at home and abroad, and there are even fewer lines in operation around the world. At present, there are only the commercial operation line of the medium and low speed maglev railway in Japan in March 2005-Eastern Hills Line and the commercial operation line of the medium and low speed maglev railway in South Korea in June 2014. At present, China's medium and low-speed maglev transportation 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 all of them are elevated structures. Resea...

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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