CN106498839B - A kind of bi-directional folded truss-type bridges structure - Google Patents

A kind of bi-directional folded truss-type bridges structure Download PDF

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Publication number
CN106498839B
CN106498839B CN201611029909.5A CN201611029909A CN106498839B CN 106498839 B CN106498839 B CN 106498839B CN 201611029909 A CN201611029909 A CN 201611029909A CN 106498839 B CN106498839 B CN 106498839B
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China
Prior art keywords
common edge
angle
folded
panel
triangular plate
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CN201611029909.5A
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CN106498839A (en
Inventor
蔡建国
张骞
王馨玉
冯健
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Southeast University
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Southeast University
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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D15/00Movable or portable bridges; Floating bridges
    • E01D15/12Portable or sectional bridges
    • E01D15/124Folding or telescopic bridges; Bridges built up from folding or telescopic sections

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)

Abstract

The invention discloses a kind of bi-directional folded truss-type bridges structures, it is made of support construction and the panel construction in support construction, support construction is folded truss, which is included in the tetragonous pole unit that span direction is connected and the drag-line that folded truss is folded and is unfolded;A drag-line is set respectively on the upper chord node and lower-chord panel point of each tetragonous pole unit of composition folded truss;After eight pieces of folded plates unit expansion four fringe nodes are formed for rectangle and at four angles of rectangle;Four fringe nodes of mud jacking by duct plate unit are hinged with four of tetragonous pole unit upper chord nodes.The folding dome mechanical of the present invention is single-degree-of-freedom system, reduces the quantity of driving device;The number of components that the present invention is formed overcomes the shortcomings that structure sense organ upper lever is various in disorder far fewer than general foldable structure;Its easy to remove and resettlement, it is reusable, and reasonable, design and construction is simple are constructed, it is particularly suitable for the bridge of medium and small span.

Description

A kind of bi-directional folded truss-type bridges structure
Technical field
The present invention relates to a kind of folded truss structure, especially a kind of bi-directional folded truss-type bridges structure.
Background technology
Successfully the concept of deployable structure is applied to first from the Spanish architect Pinero sixties in last century " removable The design of dynamic theater ", application of the openable roof system in large-span space structure are increased sharply.On the other hand, with People explore the quickening of outer space paces, and deployable structure has received widespread attention, and correlative study achievement has application to space In solar energy sailboard, satellite antenna.And current application is most commonly used is mainly based upon scissors unit (scissor like Element deployable structure).Consider from geometry angle, the basic principle of this kind of deployable structure is each pair connecting rod by one A column hinge is connected, and each pair connecting rod is only capable of around vertically being relatively rotated with this to the axis of plane where connecting rod, and other degree of freedom It is restricted completely;The connection between scissors unit is hingedly realized by unit endpoint node simultaneously.Scissors unit is connected group Into folded truss.
Existing movable structure, geometry only consider " beginning " and " end " two states namely rugosity mostly State and unfolded state.Conversion regime between the two states is substantially:Horizontal movable type rotates horizontally portable, space shifting Dynamic formula, pivots formula, Collapsible movable and combination moving type etc..But these openable roof structures only be translatable or The ability that person rotates, in fact there is no change for the shape of entire roof structure.So these movable structures are not really to anticipate Unstable s tructure in justice.
The expansion of deployable structure is typically to be realized using the relative rotation between scissors unit rod piece, with the duration Short, easy resettlement and repeatable the advantages that utilizing, the great interest of modern engineers is caused.But because node is related to complexity, just Spend the reasons such as difference its in large-span structure using less.
The content of the invention
The technical problems to be solved by the invention are in view of the above shortcomings of the prior art, and to provide a kind of connecting node Less, the good a kind of bi-directional folded truss-type bridges structure of the rigidity of structure has many advantages, such as to design and easy for construction, can preferably meet and face When property bridge conveniently builds and moves and requirement of the Longspan Bridge to folder function.
In order to solve the above technical problems, present invention employs following technical solutions:
A kind of bi-directional folded truss-type bridges structure, the rigid bridge panel by support construction and in support construction form, It is characterized in that:The support construction is folded truss, the folded truss be included in the tetragonous pole unit that span direction is connected and The drag-line that the folded truss is folded and is unfolded;The tetragonous pole unit is circumferential connected in head and the tail by four scissors units Composition;The scissors unit is formed by two equal length straight-bars in respective midpoint pin joint;Four scissors units join end to end It is formed afterwards there are four upper chord node and four lower-chord panel points, in the upper chord joint for each tetragonous pole unit for forming the folded truss A drag-line is set respectively on point and lower-chord panel point;
The rigid bridge panel is made of mud jacking by duct plate unit;The mud jacking by duct plate unit is by eight pieces of folded plates Unit forms, and four fringe nodes are formed for rectangle and at four angles of rectangle after eight pieces of folded plates unit expansion;It is described Four fringe nodes of mud jacking by duct plate unit are hinged with four of the tetragonous pole unit upper chord nodes;Described eight pieces fold just Property plate unit be divided into four triangular plates and four pentagonal panels, according to clockwise be respectively the first triangular plate, the one or five side Shape plate, the second pentagonal panel, the second triangular plate, the 3rd triangular plate, the 3rd pentagonal panel, the 4th pentagonal panel and the four or three Angular plate, the common edge between them are respectively the first common edge, the second common edge, the 3rd common edge, the 4th common edge, the 5th Common edge, the 6th common edge, the first triangular plate and the 4th triangular plate common edge are the 7th common edge in addition, the first pentagon Plate and the 4th pentagonal panel common edge are the 8th common edge, wherein the second pentagonal panel and the 3rd pentagonal panel common edge are the 9th Common edge;During the motion, the first common edge to the 3rd common edge is mutually parallel, and the 4th common edge is mutual to the 6th common edge Parallel, the 7th common edge is coplanar to the 9th common edge;First triangular plate, the first pentagonal panel, the second pentagonal panel, the two or three Angular plate and the 3rd triangular plate, the 3rd pentagonal panel, the 4th pentagonal panel, the 4th triangular plate be on the 7th common edge extremely The plane that 9th common edge is formed remains symmetrical.
First common edge, the 3rd common edge, the 4th common edge, the 6th common edge and the 8th common edge are crest line, the Two common edges, the 5th common edge, the 7th common edge and the 9th common edge are valley line, and adjacent triangular plate is along crest line to rolled over It is folded, it is folded inward along valley line, the angle being foldable outwardly between the exterior normal for referring to adjacent triangular plate becomes larger, inwardly The angle folded between the exterior normal for referring to adjacent triangular plate becomes smaller.
First triangular plate is respectively the first folder in the angle of the sideline of the 7th common edge both sides and the 7th common edge Angle and the second angle;In the first common edge of both sides sideline of the first pentagonal panel and the second common edge and the 8th common edge angle point It Wei not the 3rd angle and the 4th angle;It is respectively the 5th angle in the angle of the second pentagonal panel both sides sideline and the 9th common edge With the 6th angle;First angle and the 3rd angle are equal, and the second angle and the 5th angle are 90 °;First angle and the 4th angle Complementation, the 3rd angle and the 6th angle are complementary.
The straight-bar is plane link or the rod piece of space structure.
The invention has the advantages that be that movement is compatible in moving process, between mechanism, will not generate additional interior Power, stress performance are superior;And the folded truss of the present invention is single-degree-of-freedom system, reduces the quantity of driving device;Separately Outside, since the number of components that forms of the present invention is far fewer than general foldable structure, to a kind of effect of brevity and lucidity of people, gram The shortcomings that structure sense organ upper lever is various in disorder is taken;Its easy to remove and resettlement, it is reusable, and construct reasonable, design And construction is simple, it is particularly suitable for the bridge of medium and small span.
Description of the drawings
The present invention is described in more detail with reference to the accompanying drawings and embodiments:
Fig. 1 is the structure diagram of scissors unit;
Fig. 2 is the structure diagram of tetragonous pole unit;
Fig. 3 is that the structure of mud jacking by duct plate unit is fully deployed schematic diagram;
Fig. 4 is half expanded schematic diagram of structure of mud jacking by duct plate unit;
Fig. 5 is the structure diagram of the folded truss of cloth rope;
Fig. 6 is the structure diagram of overall structure expansion;
Fig. 7 is the structure diagram that overall structure half is unfolded.
Specific embodiment
Referring to Figure of description, more detailed description is made to the specific embodiment of the present invention:
The elementary cell of folded truss is scissors unit, as shown in Figure 1, a scissors unit is existed by two straight-bars 21 and 22 Two bar midpoint pin joints form, 1 two straight-bars of scissors unit, 21 and 22 equal length and in bar midpoint pin joint.Such as Fig. 2, scissors 1 head and the tail circumferential direction of unit is connected to form tetragonous pole unit 4.
Structure expansion drag-line 3 tenses, and the folded truss 4 of cloth rope 3 is as shown in Figure 5.
Rigid bridge panel 5 is made of mud jacking by duct plate unit 6 and is connected to form.Wherein eight pieces of folded plates units can be rolled over It is folded.Mud jacking by duct plate unit 6 is arranged on folded truss 4.As shown in figure 3, half is unfolded when mud jacking by duct plate unit 6 is fully deployed As shown in Figure 4.Each mud jacking by duct plate unit 6 is made of four triangular plates and four pentagonal panels, according to difference clockwise For the first triangular plate 71, the first pentagonal panel 72, the second pentagonal panel 73, the second triangular plate 74, the 3rd triangular plate 75, 3rd pentagonal panel 76, the 4th pentagonal panel 77 and the 4th triangular plate 78.Common edge between them is respectively first public Side 79, the second common edge 710, the 3rd common edge 711, the 4th common edge 712, the 5th common edge 713, the 6th common edge 714, this Outer first triangular plate and the 4th triangular plate common edge are the 7th common edge 715, the first pentagonal panel and the 4th pentagonal panel Common edge is the 8th common edge 716, wherein the second pentagonal panel and the 3rd pentagonal panel common edge are the 9th common edge 717; In motion process, 79 to the 3rd common edge 711 of the first common edge is mutually parallel, the 4th common edge 712 to 714 phase of the 6th common edge Mutually parallel, 715 to the 9th common edge 717 of the 7th common edge is coplanar.First triangular plate 71, the first pentagonal panel the 72, the 2nd 5 Side shape plate 73, the second triangular plate 74 and the 3rd triangular plate 75, the 3rd pentagonal panel 76, the 4th pentagonal panel the 77, the 4th 3 Angular plate 78 be on 715 to the 9th common edge 717 of the 7th common edge formed plane it is symmetrical.Two adjacent scissors units Two upper strata common nodes are hinged with rigid bridge panel outer rim.
First common edge 79, the 3rd common edge 711, the 4th common edge 712, the 6th common edge 714 and the 8th common edge 716 For crest line, the second common edge 710, the 5th common edge 713, the 7th common edge 715 and the 9th common edge 717 are valley line, adjacent Plate is foldable outwardly along crest line, is folded inward along valley line, the folder being foldable outwardly between the exterior normal for referring to adjacent plate Angle becomes larger, and the angle folded inward between the exterior normal for referring to adjacent plate becomes smaller.First triangular plate is in the 7th common edge two The sideline of side and the angle of the 7th common edge are respectively the first angle 718 and the second angle 719;The two of the first pentagonal panel 72 Side line the first common edge 79 and the angle of the second common edge 710 and the 8th common edge 716 are respectively the 3rd angle 720 and the 4th Angle 721;It is respectively the 5th angle 722 and the 6th in the angle of 73 both sides sideline of the second pentagonal panel and the 9th common edge 717 Angle 723;First angle 718 and the 3rd angle 720 are equal, and the second angle 719 and the 5th angle 722 are 90 °;First angle and 718 the 4th angle 721 is complementary, and the 3rd angle 720 and the 6th angle 723 are complementary.
Four nodes 724~727 on the outside of every piece of folded plates unit and following folded truss 4 wind up four nodes 41~44 is (as shown in Figure 5) hinged.In motion process, structure can be unfolded along span direction and perpendicular to span direction both direction And contraction, overall structure structure are as shown in Figure 6 when being unfolded.Lower edge arranges drag-line on folded truss 4, during expansion drag-line 3 tense and It is fixed at end bay, drag-line 3 relaxes (such as Fig. 7) during contraction.Whole single dof mobility.

Claims (3)

1. a kind of bi-directional folded truss-type bridges structure, the rigid bridge panel by support construction and in support construction form, It is characterized in that:The support construction is folded truss, which is included in tetragonous pole unit and the general that span direction is connected The drag-line that the folded truss is folded and is unfolded;The tetragonous pole unit is by four scissors units in the circumferential connected group of head and the tail Into;The scissors unit is formed by two equal length straight-bars in respective midpoint pin joint;After four scissors units join end to end It is formed there are four upper chord node and four lower-chord panel points, in the upper chord node for each tetragonous pole unit for forming the folded truss With a drag-line is set respectively on lower-chord panel point;
The rigid bridge panel is made of mud jacking by duct plate unit;The mud jacking by duct plate unit is by eight pieces of folded plates units Composition forms four fringe nodes after eight pieces of folded plates unit expansion for rectangle and at four angles of rectangle;The rigidity Four fringe nodes of bridge floor plate unit are hinged with four of the tetragonous pole unit upper chord nodes;Eight pieces of folded plates Unit is divided into four triangular plates and four pentagonal panels, according to counterclockwise be respectively the first triangular plate, the first pentagonal panel, Second pentagonal panel, the second triangular plate, the 3rd triangular plate, the 3rd pentagonal panel, the 4th pentagonal panel and the 4th triangle Plate, the common edge between them is respectively the first common edge, the second common edge, the 3rd common edge, the 4th common edge, the 5th public Side, the 6th common edge, the first triangular plate and the 4th triangular plate common edge are the 7th common edge in addition, the first pentagonal panel and 4th pentagonal panel common edge is the 8th common edge, wherein the second pentagonal panel and the 3rd pentagonal panel common edge are public for the 9th Side;During the motion, the first common edge to the 3rd common edge is mutually parallel, and the 4th common edge to the 6th common edge is mutually flat Row, the 7th common edge are coplanar to the 9th common edge;First triangular plate, the first pentagonal panel, the second pentagonal panel, the second triangle Shape plate and the 3rd triangular plate, the 3rd pentagonal panel, the 4th pentagonal panel, the 4th triangular plate are on the 7th common edge to The plane that nine common edges are formed remains symmetrical;
First common edge, the 3rd common edge, the 4th common edge, the 6th common edge and the 8th common edge are crest line, and second is public Side, the 5th common edge, the 7th common edge and the 9th common edge are valley line altogether, and adjacent triangular plate is foldable outwardly along crest line, It is folded inward along valley line, the angle being foldable outwardly between the exterior normal for referring to adjacent triangular plate becomes larger, to infolding Angle between the folded exterior normal for referring to adjacent triangular plate becomes smaller.
2. bi-directional folded truss-type bridges structure according to claim 1, it is characterised in that:First triangular plate is the 7th The sideline of common edge both sides and the angle of the 7th common edge are respectively the first angle and the second angle;The two of the first pentagonal panel Line the first common edge in side is respectively the 3rd angle and the 4th angle with the second common edge and the 8th common edge angle;The two or five Side Xing Ban both sides sideline and the angle of the 9th common edge are respectively the 5th angle and the 6th angle;First angle and the 3rd angle phase Deng the second angle and the 5th angle are 90 °;First angle and the 4th angle are complementary, and the 3rd angle and the 6th angle are complementary.
3. bi-directional folded truss-type bridges structure according to claim 1 or 2, it is characterised in that:The straight-bar for plane link or The rod piece of space structure.
CN201611029909.5A 2016-11-15 2016-11-15 A kind of bi-directional folded truss-type bridges structure Expired - Fee Related CN106498839B (en)

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CN106930177B (en) * 2017-05-17 2019-01-15 金华市秸和环保技术咨询有限公司 A kind of telescopic emergency bridge
CN107415327B (en) * 2017-07-12 2019-06-21 东南大学 A kind of combined type deployable structure based on rigid paper folding unit
CN112458870B (en) * 2020-11-12 2022-08-30 汕头大学 Novel expandable bridge structure based on paper folding structure
CN114293455B (en) * 2021-10-11 2024-04-05 郑孝群 One-pull road bridge and its manufacture and construction

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US6202364B1 (en) * 1999-11-08 2001-03-20 Bernard Fredette Prefabricated self-supporting building structure
US8371088B2 (en) * 2009-04-23 2013-02-12 Donald V. Merrifield Deployable truss with integral folding panels
CN102605891B (en) * 2012-03-08 2014-04-16 东南大学 Movable truss with high-order curve shape
CN102605892B (en) * 2012-03-08 2014-04-16 东南大学 Movable structure based on folding-rod shearing-type unit
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Granted publication date: 20180518