Medium and low speed maglev traffic engineering low line solid bearing-trail beam structure and construction method thereof

Abstract

The invention belongs to the field of bearing-trail beams and discloses a medium and low speed maglev traffic engineering low line solid bearing-trail beam structure; the bearing-trail beam structure comprises a reinforced concrete base plate, reinforced concrete solid beams, multiple rows of rail bearing pedestals, a track panel, and guide rail supports; the reinforced concrete solid beam is integrated on the reinforced concrete base plate; the reinforced concrete solid beams are arranged in the line direction in sections and an expansion joint is arranged between adjacent reinforced concrete solid beams; tops of the reinforced concrete solid beams are provided with the multiple rail bearing pedestals; beam grooves are uniformly installed at a left side and a right side of each reinforced concrete solid beam; multiple guide rail supports are installed at the left side and the right side of each reinforced concrete solid beam. The medium and low speed maglev traffic engineering low line solid bearing-trail beam structure has large rigidity and strong anti-deformation ability which can be prepared by cast-in-situ or prefabrication and lifting; the structure and construction process are simple; the construction precision is easy to control.

Description

technical field [0001] The invention belongs to the field of rail-bearing beams, and more specifically relates to a solid rail-bearing beam structure and a construction method for a low-lying line in a medium-low speed magnetic levitation traffic engineering. 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 which will be opened in June 2014. China's medium and low-speed maglev transportation currently only has the National University of Defense Technology test line, the Qingchengshan test line, and the Tangshan test line, and there is no line officially put into operation. [0...

AI Technical Summary

Problems solved by technology

[0005] (1) In order to increase the stiffness and deformation resistance of the pier, the upper part of the pier is often equipped with longitudinal and transverse beams. During the construction, it is difficult to make the overall formwork, and the buttresses and longitudinal and transverse beams are integrally poured. It is necessary to construct the buttresses first, and then construct the longitudinal and transverse beams. There are many construction procedures

[0006] (2) For the pier type rail beam designed according to the elastic foundation beam, the upper pier is mostly set on the reinforced concrete floor below it, and its overall stiffness is small. During the hoisting and transportation process, the structure is easy to deform and crack, so it is not suitable to use factory Prefabricated construction can only be limited to on-site cast-in-place construction

However, due to the large number of small components and the cast-in-place construction method of the pier-type rail-supporting beam, its construction accuracy is difficult to control, which directly affects the construction quality of the track and the running safety of the train

[0008] (4) The structure of the upper track is limited by the structure of the supporting pier-type rail beam. The layout of the rail row cannot be placed randomly, and must be accurately set according to the position of the pier and the transverse width of the structure

This increases the difficulty of construction, especially in curved areas.

[0009] (5) The structure of the upper track does not take into account the influence of temperature under the conditions of alternating hot and cold in the field, and it is easily deformed and cracked, which poses a safety hazard

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