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Prestressed rail beam and its manufacture

A manufacturing method, technology of track beams, applied in the field of running tracks of rail vehicles

Inactive Publication Date: 2002-04-17
SHANGHAI MAGLEV TRANSPORTATION DEVELOPMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a prestressed track beam and its manufacturing and installation method according to the prestressed design, so as to ensure that the track beam can always meet the deformation requirements of the magnetic levitation track beam

Method used

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  • Prestressed rail beam and its manufacture
  • Prestressed rail beam and its manufacture
  • Prestressed rail beam and its manufacture

Examples

Experimental program
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Embodiment Construction

[0040] see figure 1 , figure 2 and image 3 , the prestressed track beam of the present invention comprises a beam top plate 1, a beam bottom plate 2, and a beam web 3, and is characterized in that: a number of beams are arranged in the track beam top plate 1 and the left part 21 and the right part 22 of the beam bottom plate 2. Eccentric pretensioning method prestressing beams 5, a number of eccentric pretensioning method prestressing beams 6 are arranged in the middle part 20 of the track beam bottom plate 2; a first posttensioning method is respectively arranged on the two webs 3 of the track beam according to the quadratic parabola shape The prestressing beams 7 are each configured with a second post-tensioning prestressing beam 8 in the shape of a quadratic parabola.

[0041] For curved track beams, in addition to the prestressed beams configured as described above, transverse eccentric pretensioned prestressed beams 9 should also be arranged in the top and bottom plat...

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Abstract

The prestressed rail beam suitable for use in high speed urban rail transportation includes top plate, bottom plate and web plate. It is featured by that several eccentric pretensioning type prestressed beams set in the right and left parts of the top plate and the bottom plate; several eccentric pretensioning type prestressed beams set in the middle part of the bottom plate; two quadratic parabolic first post tensioning type prestressed beams on two sides of the web separately; two quadratic parabolic second post tensinoing type prestressed beams on two sides of the web separately; and outside prestressed beams in cavity and top plate. Controlling the prestressed rail beam always in prestressed axle state for one deformation keeps within 1 mm.

Description

technical field [0001] The invention relates to a running track of a rail vehicle, in particular to a prestressed track beam for high-speed rail traffic such as magnetic levitation and a manufacturing method thereof. Background technique [0002] Maglev train is a high-speed transport system. When it runs at high speed, it has extremely high precision requirements for the support structure, that is, the track structure. First of all, in terms of the mechanical characteristics of the track structure, it is required that the track structure has very strict requirements on deformation under the action of train active load, ambient temperature and long-term load; at the same time, there are strict restrictions on the dynamic characteristics of the track structure. The first-order natural frequency must be greater than 1.1 times the ratio of driving speed to track structure span. Secondly, train operation systems such as maglev trains put forward very strict precision requireme...

Claims

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Application Information

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IPC IPC(8): E01B25/30E04C3/26
CPCE04C3/26E01B25/305
Inventor 吴祥明吴忠任廷桂
Owner SHANGHAI MAGLEV TRANSPORTATION DEVELOPMENT CO LTD
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