Portable composite trekking bridge

A composite material and pedestrian bridge technology, applied in portable bridges, bridges, bridge parts, etc., can solve the problems of difficult carrying, high labor intensity of erection operations, and self-heavy weight, etc., to improve the erection and assembly speed, reduce self-weight, and enhance bearing capacity. effect of ability

Pending Publication Date: 2018-01-30
ARMY ENG UNIV OF PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although steel has the advantages of high strength, good plasticity and toughness, uniform stress, and mature design calculation theory, steel bridges have disadvantages such as heavy weight, difficulty in carrying, and labor-intensive erection operations, which are difficult to meet the requirements of field work or hiking. Requirements such as light weight, portability, and rapid assembly and erection under certain conditions

Method used

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  • Portable composite trekking bridge
  • Portable composite trekking bridge
  • Portable composite trekking bridge

Examples

Experimental program
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Embodiment 1

[0029] The present embodiment provides a kind of portable composite material pedestrian bridge, structure such as figure 1 As shown, the pedestrian bridge comprises two main girder assemblies 1 arranged in parallel, and several cross beam assemblies 4 are installed vertically between the two main girder assemblies, and bridge deck 3 is set in the area surrounded by cross girder assemblies 4 and main girder assemblies 1; Assembly 1 includes several bushing beam assemblies 103 connected end to end, bidirectional metal sleeves 101 pass between casing beam assemblies 103, one-way metal sleeves 102 are installed on the two outer ends of main beam assembly 1, and casing beam assemblies 103 is composed of several coaxial pipe fitting units 1031 with successively reduced cross-sections; prestressed cables 2 are installed inside the main beam assembly 1 along its extension direction, and the two ends of the prestressed cables 2 are respectively connected to the main beam The one-way me...

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PUM

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Abstract

The invention discloses a portable composite trekking bridge, which comprises two main beam assemblies arranged in parallel. A plurality of cross beam assemblies are installed between and perpendicular to the two main beam assemblies. A bridge deck is formed in the region surrounded by the cross beam assemblies and the main beam assemblies. Each main beam assembly comprises a plurality of casing pipe beam assemblies which are connected end to end. One-way metal sleeves pass between the casing pipe beam assemblies. The two outer end portions of each main beam assembly are provided with bidirectional metal sleeves. Each casing pipe beam assembly is composed of a plurality of pipe unit layers which are coaxially and sectionally reduced in turn and are nested. Each cross beam assembly comprises cross beams. Composite buckles are installed at the two ends of each cross beam. The composite buckles and the main beam assemblies can be nested mutually. The trekking bridge is formed by combiningand assembling a lightweight composite in a mode that each two are bucked; the trekking bridge is small, portable, and easy to assemble and erect and meets the need of a single person for striding over ravines and other obstacles when working in the field.

Description

technical field [0001] The invention belongs to a pedestrian bridge used for field operations, in particular to a portable composite material pedestrian bridge. Background technique [0002] Most of the existing pedestrian bridges are metal structures, including a large number of steel structures and a small number of aluminum alloy structures. Although steel has the advantages of high strength, good plasticity and toughness, uniform stress, and mature design calculation theory, steel bridges have disadvantages such as heavy weight, difficulty in carrying, and labor-intensive erection operations, which are difficult to meet the requirements of field work or hiking. Lightweight, portable, fast assembly and erection under certain conditions. No matter in terms of field work or hiking, it is urgent for us to seek a new type of pedestrian bridge to meet the current practical needs. Lightweight structure, high strength, and rapid assembly and erection are the main directions fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D15/12E01D19/00E01D19/12
Inventor 李峰张冬冬王浩赵志波朱锐杰佘殷鹏刘建邦
Owner ARMY ENG UNIV OF PLA
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