A two-way folding truss bridge structure

A technology of truss bridges and trusses, which is applied in the field of two-way folding truss bridge structures, which can solve the problems of poor rigidity, complex nodes, etc., and achieve the effects of reasonable structure, overcoming numerous and messy rods, and reducing the number

Active Publication Date: 2018-05-18
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is rarely used in long-span structures due to the complexity of the nodes involved and poor stiffness.

Method used

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  • A two-way folding truss bridge structure
  • A two-way folding truss bridge structure
  • A two-way folding truss bridge structure

Examples

Experimental program
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Effect test

Embodiment Construction

[0021] Below with reference to accompanying drawing of description, the specific embodiment of the present invention is described in more detail:

[0022] The basic unit of a folded truss is a scissor unit, such as figure 1 As shown, a scissor unit is formed by two straight rods 21 and 22 pinned at the midpoint of the two rods, and the two straight rods 21 and 22 of the scissor unit 1 are equal in length and pinned at the midpoint of the rods. Such as figure 2 , The scissor units 1 are connected end to end to form a quadrangular prism unit 4 .

[0023] The structure unfolds and the cable 3 is tensioned, and the folded truss 4 of the cable 3 is as Figure 5 shown.

[0024] The rigid bridge deck 5 is composed of rigid bridge deck units 6 connected together. Eight of the folding rigid plate units are foldable. Rigid bridge deck units 6 are arranged on the folded trusses 4 . When the rigid bridge deck unit 6 is fully deployed as image 3 As shown, half-expanded as Figure...

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Abstract

The invention discloses a bi-directional folding truss bridge structure which comprises a support structure and a panel structure located on the support structure, wherein the support structure is a folding truss, and the folding truss comprises quadrangular units connected with each other in the span direction and an inhaul cable used for folding and unfolding the folding truss; an upper chord node and a lower chord node of each of the quadrangular units of the folding truss are respectively provided with one inhaul cable; eight folding rigid plate units are unfolded to form a rectangle, and four edge nodes are formed at the four corners of the rectangle; four edge nodes of a rigid bridge slab are articulated with four upper chord nodes of the quadrangular units. According to the bi-directional folding truss bridge structure disclosed by the invention, a folding dome mechanism is an SDOF (single degree of freedom) system, thereby reducing the number of driving devices; the number of the components of the bi-directional folding truss bridge structure is far smaller than that of a general folding structure, thereby overcoming the defect that rod components are various and messy in structure appearance; the bi-directional folding truss bridge structure is convenient to move and relocate, can be repeatedly used, has reasonable structure and simple design and construction, and is especially suitable for bridges with medium and small spans.

Description

technical field [0001] The invention relates to a folding truss structure, in particular to a bidirectional folding truss bridge structure. Background technique [0002] Since the Spanish architect Pinero first successfully applied the concept of expandable structure to the design of "movable theater" in the 1960s, the application of openable roofs in large-span spatial structures has increased rapidly. On the other hand, with the acceleration of people's exploration of outer space, deployable structures have received extensive attention, and relevant research results have been applied to space solar panels and satellite antennas. The most widely used one is the expandable structure based on scissor like element. From a geometric point of view, the basic principle of this type of deployable structure is that each pair of connecting rods is connected by a column hinge, and each pair of connecting rods can only rotate relative to the axis perpendicular to the plane where the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D15/12
CPCE01D15/124
Inventor 蔡建国张骞王馨玉冯健
Owner SOUTHEAST UNIV
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