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Bridge magnetic levitation pushing system and two-stage cantilever manufacturing method

A magnetic levitation and jacking technology, used in bridge construction, bridges, erection/assembly of bridges, etc., can solve problems such as damage to PTFE slide plates, high construction cost, slow construction process, etc., to reduce friction and resistance, and low construction costs. , the effect of fast construction process

Active Publication Date: 2013-11-20
桥博建筑科技(东莞)有限公司 +1
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AI Technical Summary

Problems solved by technology

Generally, long-stroke jacks are used to perform multiple pushes, that is, the jack repeats the process of pushing and returning. Such discontinuous pushing is time-consuming and labor-intensive, and the construction process is slow. Repeated starts are easy to damage the PTFE slide, and the construction cost is high.

Method used

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  • Bridge magnetic levitation pushing system and two-stage cantilever manufacturing method
  • Bridge magnetic levitation pushing system and two-stage cantilever manufacturing method
  • Bridge magnetic levitation pushing system and two-stage cantilever manufacturing method

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Embodiment Construction

[0034] Below in conjunction with accompanying drawing and specific embodiment, the present invention will be further described:

[0035] See Figure 1 to Figure 4 , The present invention relates to a bridge maglev jacking system, and its preferred embodiment includes a maglev jacking main girder hollow box structure and a maglev jacking platform. The magnetic levitation jacking platform includes a jacking platform 1, a jack 2, two bottom steel plates 5, two electromagnets 30, two PTFE slides 4, several steel tube concrete rollers 3 and a jacking anchor pad 15. The hollow box-shaped structure of the main girder for maglev jacking includes a steel truss web bridge frame and two permanent magnets 29 .

[0036] The pushing platform 1 is installed on the right end of the abutment 90, the jack 2 is installed on the pushing platform 1, and the two bottom steel plates 5 are pre-embedded in the left and right ends of the top surface of the abutment 90 respectively, and each bottom ste...

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Abstract

A bridge magnetic levitation pushing system comprises a magnetic levitation pushing main beam hollow box-shaped structure and a magnetic levitation pushing platform. The magnetic levitation pushing platform comprises a pushing platform base, two bottom surface steel plates, two electromagnets, two Teflon sliding plates and a plurality of steel tube concrete rollers. The magnetic levitation pushing main beam hollow box-shaped structure comprises a steel truss abdomen bridge framework and two permanent magnets. According to the bridge magnetic levitation pushing system, by means of the repulsive force of a magnetic field, the magnetic levitation pushing main beam hollow box-shaped structure is pushed so that friction force and resistance in pushing-pulling traction can be reduced and continuous pushing operations can be carried out, pushing is needless to be interrupted, the construction progress is quick, construction is safe and efficient, construction cost is reduced, noise is low in pushing, fuel is needles, environment is protected, energy is saved, and operations are simple. The invention further relates to a two-stage cantilever manufacturing method.

Description

[0001] technical field [0002] The invention relates to a bridge magnetic levitation jacking system and a two-stage cantilever construction method. [0003] Background technique [0004] The top and bottom slabs of PC bridges with steel truss webs are both concrete structures, and the webs are replaced by hollow concrete filled steel tubes. Traditional bridges are divided into steel girder bridges, reinforced concrete bridges, and steel-concrete bridges in terms of materials. Reinforced concrete bridges have the advantages of low cost, good durability, good fire resistance, and low maintenance costs, but they have disadvantages such as heavy structure, poor crack resistance, long construction period, and limited spanning capacity. Steel girder bridges are suitable for bridges with complex urban traffic and long-span bridges, and the construction is fast, safe and convenient. But there are defects such as high cost, poor fire resistance and high maintenance cost. Steel-c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/10
Inventor 李勇卿三惠李敏万宗江郭帅李海史鸣
Owner 桥博建筑科技(东莞)有限公司
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