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Deck type folding truss bridge structure

A truss bridge and truss technology, which is applied in the field of top-supported folded truss structures, can solve the problems of poor rigidity, complicated joints, etc., and achieves the effects of reasonable structure, overcoming many messy members and excellent mechanical performance.

Active Publication Date: 2017-01-25
SOUTHEAST UNIV
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  • 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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  • Deck type folding truss bridge structure
  • Deck type folding truss bridge structure
  • Deck type folding truss bridge structure

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Embodiment Construction

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

[0020] Scissor unit 1 in the structural span figure 1 As shown, a scissor unit is formed by pinning two straight rods 21 and 22 at the midpoint of the two rods. In the scissor unit 1 at the side span position of the structure, the lengths of 21 and 22 are not equal in order to meet the slope of the upper bridge; the structure The two straight rods 21 and 22 of the mid-span 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 in the length direction of the structure to form a folded truss unit 4 .

[0021] The structure unfolds the cable 3 tension, and the folded truss of the cable is as follows Figure 4 shown.

[0022] The rigid bridge deck 5 is composed of an intermediate span bridge deck unit 7 and a side span bridge deck unit 6 . Wherein the middle bridge panel unit 7 is fol...

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Abstract

The invention discloses a deck type folding truss bridge structure which is composed of a supporting structure and a panel structure located on the supporting structure. The supporting structure is a folding truss. The folding truss comprises two folding truss units, a cross beam connected between the two folding truss units and inhaul cables for folding and unfolding the folding truss units respectively. An intermediate span bridge panel is composed of six triangular plates and is in a rectangular shape after being unfolded. The four corners of the intermediate span panel are hinged to four upper chord joints of the rectangular installation region. The deck type folding truss bridge structure has the advantages that the folding dome mechanism is a single-degree-of-freedom system, and the number of driving devices is decreased; in addition, due to the fact that the number of the components of the deck type folding truss bridge structure is much smaller than that of an ordinary folding structure, the concise and vivid effect is brought to people, and the defect that rod pieces are numerous and messy on the structural appearance is overcome; the deck type folding truss bridge structure is convenient to move and relocate, capable of being recycled, reasonable in structure, easy to design and construct and particularly suitable for bridges of medium and small spans.

Description

technical field [0001] The invention relates to a top-supporting folding truss structure, in particular to a top-supporting 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. 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 perpendic...

Claims

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Application Information

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IPC IPC(8): E01D6/00E01D15/10
CPCE01D6/00E01D15/10
Inventor 蔡建国王馨玉冯健
Owner SOUTHEAST UNIV
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