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Magnetic levitation track beam tensioning protection device and protection method

A protective device and track beam technology, which is applied to tracks, roads, bridges, etc., can solve problems such as potential safety hazards, broken prestressed tendons, fragments, and parts flying out, and achieve the effect of ensuring construction safety

Pending Publication Date: 2020-06-23
CHINA MCC5 GROUP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] On-site prestressed tensioning has great potential safety hazards. If problems such as prestressed tendon breakage, slippage, and tensioning equipment failure occur during the tensioning process, debris and parts may fly out, which is very easy to stretch the construction work area Serious injury to personnel and construction workers of other types of work

Method used

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  • Magnetic levitation track beam tensioning protection device and protection method
  • Magnetic levitation track beam tensioning protection device and protection method
  • Magnetic levitation track beam tensioning protection device and protection method

Examples

Experimental program
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Effect test

Embodiment 1

[0023] like figure 1 Shown, in this embodiment, a kind of maglev track beam tension protection device, support frame and the protection steel plate 1 that is arranged on the support frame, described support frame includes bottom frame 4 and two rows are arranged on the bottom frame 4 Supporting columns 2, the protective steel plate 1 is arranged between two rows of supporting columns 2.

[0024] When performing prestressed tensioning on the magnetic levitation track beam, the protective devices are integrally arranged at both ends of the magnetic levitation track beam, so that the protective steel plates 1 are aligned with the steel strands used for tensioning. If the steel strand breaks or slips due to an accident, the steel strand will fly out due to the pre-loaded tension, or the part where the magnetic levitation track beam contacts the steel strand will be broken and fly out fragments, the steel strands can be blocked by using the protective steel plate 1 to prevent the ...

Embodiment 2

[0026] On the basis of the above embodiments, in this embodiment, the protective steel plate 1 is fixedly connected with the support column 2 . In this way, the reliable connection between the protective steel plate 1 and the supporting column 2 can be ensured, and the ability of the protective steel plate 1 to be prevented from moving randomly, resulting in the reduction of the ability to block steel strands and debris.

[0027] In this embodiment, the distance between the two rows of support columns 2 is equal to the thickness of the protective steel plate 1 , and the protective steel plate 1 is welded or screwed to the support column 2 . This facilitates the positioning and installation of the protective steel plate 1 .

[0028] The protective steel plate 1 is located on the centerline of the bottom frame 4 , and the width of the bottom frame 4 is greater than half of the width of the protective steel plate 1 . In this way, the overall center of gravity of the protective d...

Embodiment 3

[0030] On the basis of the above embodiments, in this embodiment, the bottom frame 4 is provided with several edge braces 51 connected to the support columns 2 at the edges on both sides of the protective steel plate 1 . Utilizing the edge brace 51 can make the support column 2, the bottom frame 4, and the edge brace 51 form a triangular structure, thereby improving the overall stability of the protective device and the impact resistance of the protective steel plate 1, and avoiding the occurrence of shocks when the protective steel plate 1 bears the impact force. deformed or toppled over.

[0031] In this embodiment, the bottom frame 4 is provided with an intermediate brace 52 connected to the middle or below the middle of the support column 2 . The support column 2 , the bottom frame 4 , and the middle diagonal brace 52 can form a triangular structure with a small area by using the middle diagonal brace 52 , which can further enhance the overall stability of the protective d...

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PUM

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Abstract

The invention discloses a magnetic levitation track beam tensioning protection device and a protection method. The protection device comprises a supporting frame and a protection steel plate arrangedon the supporting frame; the supporting frame comprises a bottom frame and two rows of supporting stand columns arranged on the bottom frame; the protection steel plate is arranged between the two rows of supporting stand columns; the protection device is arranged at one end of a magnetic levitation track beam so that the protection steel plate can be aligned with a tensioning structure. The protection device is arranged at the either end of the magnetic levitation track beam so as to realize an isolation effect in a pre-stress tensioning process, prevents fragments and parts flying out accidentally from hurting workers, and advantageously guarantees construction safety.

Description

technical field [0001] The invention relates to the technical field of magnetic levitation track beam construction, in particular to a tension protection device and a protection method for a magnetic levitation track beam. Background technique [0002] The existing maglev track beam needs to be assembled on the tooling before hoisting and installation. A standard beam is composed of four unit beams hoisted on the beam assembly tooling by a crane, and the four unit beams are adjusted through the jacks on the lower part and side of the beam assembly tooling After the position of the unit beam is adjusted in place, the prestressed tension, post-casting belt binding of steel bars, concrete pouring and other construction operations are carried out, and finally assembled into a standard beam. The pre-stress is tensioned by a jack oil pump, the tension is 1550-1570KN, and the elongation of the steel strand is 91-97mm. After the tension is completed, measure the pre-camber of the t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01B25/30E01D21/00
CPCE01B25/30E01B25/305E01D21/00
Inventor 罗利李岩松
Owner CHINA MCC5 GROUP CORP
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