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Folding arch bridge structure

A folding and arch bridge technology, applied in the direction of arch bridges, bridges, bridge forms, etc., can solve the problems of poor rigidity, complex nodes involved, etc., achieve the effect of reasonable structure, overcoming numerous and messy rods, and superior mechanical performance

Active Publication Date: 2017-01-25
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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  • Folding arch bridge structure
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  • Folding arch bridge structure

Examples

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Embodiment Construction

[0019] Below with reference to accompanying drawing of description, the specific embodiment of the present invention is described in more detail:

[0020] The level line scissor unit in the structural span 1 such as figure 2 As shown, a scissor unit is formed by pinning two straight rods 21 and 22 at non-midpoints of the two rods. Such as Figure 4 , the level line scissor unit 1 is connected in the span direction of the structure to form a curved arch, forming a folded truss unit 4 .

[0021] The structure is unfolded and the cables are tightened, and the cables 3 are arranged on the upper and lower edges of a folded truss unit 4. The folded truss of the cables is as follows: Figure 5 shown.

[0022] The rigid bridge deck 5 is composed of rigid bridge deck subunits 6 connected together. The rigid bridge deck subunits are arranged under the two folded truss units 4 . The rigid bridge deck subunit 6 is fully deployed as image 3 As shown, half-expanded as Figure 4 sho...

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PUM

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Abstract

The invention discloses a folding arch bridge structure which is composed of a folded truss, a rigid plate bridge deck, a inhaul cable and a beam, wherein the folded truss is composed of two folded truss units, each folded truss unit is formed by the way that a plurality of polar line scissor-like units are connected with one another in the structural span direction, the upper portion of the folded truss is provided with the lower-chord panel points which are formed by the way that the polar line scissor-like units are connected with one another in a hinged mode; the lower portion of the folded truss is provided with the lower-chord panel points which are formed by the way that the polar line scissor-like units are connected with one another in a hinged mode; the rigid plate bridge deck is composed of rigid plate bridge deck board units; each rigid plate bridge deck board unit is composed of six folded rigid plate units and is a rectangle after being unfolded, the four joints outside of each rigid plate bridge deck board unit are connected with the four lower-chord panel points in the rectangular mounting area in a hinged mode. The folded truss is a single-degree-of-freedom system, and reduces the number of actuating devices; the folding arch bridge structure is convenient to move and relocate, can be used repeatedly, and is reasonable in construction, simple in design and construction, and especially suitable for the bridges with medium and small spans.

Description

technical field [0001] The invention relates to a folding structure, in particular to a folding arch 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. At present, 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 pair of c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D4/00
CPCE01D4/00
Inventor 蔡建国张骞王馨玉冯健
Owner SOUTHEAST UNIV
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