Independent pier-column-type rail-beam transition section structure for medium-low speed maglev single-track excavation section

Abstract

The invention belongs to the technical field of medium-low-speed magnetic levitation traffic engineering low lines and discloses a medium-low-speed magnetic levitation single line excavation section independent pier column type bearing rail beam transition section structure which comprises pile base bearing structures, reinforced concrete bearing rail beam bottom plates, reinforced concrete beam type structures, backfill filler on the two sides of bearing rail beams, bridge abutments and end walls. The multiple pile base bearing structures are arranged. The top end of each pile base bearing structure is connected with the corresponding reinforced concrete bearing rail beam bottom plate in a bearing manner. The top end of each reinforced concrete bearing rail beam bottom plate is connected with the corresponding reinforced concrete beam type structure in a bearing manner. Drainage ditches are arranged beside the backfill filler on the two sides of the bearing rail beams. The sides, away from the backfill filler on the two sides of the bearing rail beams, of the drainage ditches are provided with drainage slopes. The medium-low-speed magnetic levitation single line excavation section independent pier column type bearing rail beam transition section structure is better in long-term stability, capable of meeting the high requirement for bearing rail beam structure deformation and post-construction settlement and capable of meeting the requirement for long-term stability, durability and controllability of construction quality of a foundation bed, and smooth transition of a magnetic levitation elevated structure and a low line transition section F rail is effectively achieved.

Description

technical field [0001] The invention belongs to the technical field of low-set lines of medium and low-speed maglev traffic engineering, and more specifically relates to a structure type of a transition section of a rail-bearing beam in an excavation section of a medium-low speed maglev single line. Background technique [0002] Medium and low-speed maglev rail transit is a new type of transportation. 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 in op...

AI Technical Summary

Problems solved by technology

In the low-lying line section, the foundation under the rail-bearing beam is a geotechnical structure composed of rock and soil. Affected by factors such as terrain and geological conditions, the quality is relatively difficult to control. It is prone to uneven settlement under the action of load and various natural environmental factors. It is inevitable that post-construction settlement inconsistent with the bridge abutment of the elevated structure will occur, resulting in poor post-construction settlement. The settlement difference between the low-lying line and the bridge abutment position will inevitably affect the smoothness of the F track, and may even cause the F track to be misplaced. , deformation and other problems, in severe cases, will affect the normal operation of maglev vehicles

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