Independent pier-column-type rail-beam transition section structure in the medium-low speed maglev double-line filling section

Abstract

The invention belongs to the technical field of middle / low-speed magnetic suspension traffic engineering low arrangement lines, and discloses a middle / low-speed magnetic suspension double-line filling section independent pier column type bearing rail beam transition section structure which comprises pile foundation bearing structures, reinforced concrete bearing rail beam bottom plates, two rows of reinforced concrete beam type structures, a roadbed filling under a bearing rail beam, backfill fillings on two sides of the bearing rail beam, a bridge abutment, a trapezoid filling body and end walls; the top ends of the reinforced concrete bearing rail beam bottom plates carry the reinforced concrete beam type structures; the backfill fillings on two sides of the bearing rail beam are carried by the roadbed filling under the bearing rail beam. The high / low-speed magnetic suspension double-line filling section independent pier column type bearing rail beam transition section structure is better in long-term stability, meets high requirements on bearing rail beam structure deformation and post-construction settlement, and meets the requirement of controllability on long-term stability, durability and construction quality of a foundation bed. According to the invention, one end, close to an elevated bridge, of each of the reinforced concrete bearing rail beam bottom plates is lap-jointed on the bridge abutment, so that the smooth transition of a magnetic suspension elevated structure and a low arrangement line transition section F rail is realized effectively.

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 medium-low speed maglev double-line filling section. 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 operation, and they are mainly ele...

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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