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Quick unfoldable prestressed steel bridge

A prestressed, steel bridge technology, used in portable bridges, bridges, bridge forms, etc., to achieve the effects of small storage and transportation space, increased structural rigidity, and improved overall structural rigidity

Active Publication Date: 2014-06-04
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to propose a new type of rapidly expandable prestressed steel bridge in view of the deficiency of current rapid construction bridges and the needs of the development of expandable bridges.

Method used

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  • Quick unfoldable prestressed steel bridge
  • Quick unfoldable prestressed steel bridge
  • Quick unfoldable prestressed steel bridge

Examples

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with accompanying drawing and specific embodiment:

[0021] Such as Figure 1-4 Shown, a kind of rapidly expandable prestressed steel bridge comprises bridge deck 1, diaphragm bar 2, two or more expandable prestressed steel frames; the bridge deck is laid on the top diaphragm bar, The expandable prestressed steel frame is located under the bridge deck, and the expandable prestressed steel frame includes a scissor bar 3 and a steel cable 4, and the two ends and the middle part of the scissor bar 3 are connected to the diaphragm bar 2 , the steel cable 4 is a prestressed steel cable, and the method of laying cables inside the profile is adopted; the expandable prestressed steel bridge is fixed on the ground through a support, and an anchor rod 5 is arranged at the support.

[0022] Such as Figure 5 As shown, the bridge deck 1 is arranged on both sides of the bridge deck width, and the middle part of t...

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Abstract

The invention discloses a quick unfoldable prestressed steel bridge which comprises a bridge deck, transverse separating rods and two or more unfoldable prestressed steel frames. The bridge deck is laid on the transverse separating rods at the top, the unfoldable prestressed steel frames are positioned below the bridge deck, each unfoldable prestressed steel frame comprises a scissor-fork-type rod and a steel rope, two end heads and the middle of each scissor-fork-type rod are connected with the transverse separating rods, each steel rope is a prestressed steel rope, and by adopting an in-profile rope laying mode, pulling force borne by lower chord rods is replaced after prestress is applied, so that material performance is brought into full play; the unfoldable prestressed steel bridge is fixed on the ground through supports, constraint capability of the supports is improved, and anchor rods are arranged at the supports at two ends. The quick unfoldable prestressed steel bridge is short in erection time and convenient to carry, and can be used as a temporary bridge in the process of urban road reconstruction, during emergency rescue and disaster relief and for military use.

Description

technical field [0001] The invention relates to the technical field of expandable bridges, in particular to a rapidly expandable prestressed steel bridge. Background technique [0002] At present, domestic research and development on expandable bridges is still in its infancy. The deployable bridge appeared in World War II. The old-fashioned deployable bridges are mainly military deployable bridges, such as the TLB impact bridge, the Fairey axial folding bridge, etc. The deployment mechanism of this type of bridge is complicated and the form is cumbersome. , requiring special transport equipment. After entering the 21st century, both at home and abroad are engaged in the development of new-type deployable bridges. This type of deployable bridge has a simple deployment mechanism, easy operation, light weight and convenient transportation. [0003] There are still deficiencies in existing deployable bridges and rapid construction prefabricated bridges. For a bridge system a...

Claims

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Application Information

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IPC IPC(8): E01D15/12
Inventor 董军夏志远
Owner NANJING UNIV OF TECH
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