CN106498839A - A kind of bi-directional folded truss bridge construction - Google Patents
A kind of bi-directional folded truss bridge construction Download PDFInfo
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- CN106498839A CN106498839A CN201611029909.5A CN201611029909A CN106498839A CN 106498839 A CN106498839 A CN 106498839A CN 201611029909 A CN201611029909 A CN 201611029909A CN 106498839 A CN106498839 A CN 106498839A
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- common edge
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D15/00—Movable or portable bridges; Floating bridges
- E01D15/12—Portable or sectional bridges
- E01D15/124—Folding or telescopic bridges; Bridges built up from folding or telescopic sections
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Abstract
The invention discloses a kind of bi-directional folded truss bridge construction, it is made up of supporting construction and the panel construction in supporting construction, supporting construction is folded truss, and the folded truss is included in quadrangular unit and the drag-line that folded truss is folded and launched that span direction is connected；A drag-line is respectively provided with the upper chord node and lower-chord panel point of each quadrangular unit of composition folded truss；Eight pieces of folded plates units are rectangle four angles formation, four fringe nodes in rectangle after launching；Four fringe nodes of mud jacking by duct Slab element are hinged with four of quadrangular unit upper chord nodes.The folding dome mechanical of the present invention is single-degree-of-freedom system, reduces the quantity of driving means；The number of components that the present invention is constituted overcomes the various in disorder shortcoming of structure sense organ upper lever far fewer than general foldable structure；Which is easy to mobile and moves, reusable, and construction is reasonable, design and construction is simple, is particularly suitable for the bridge of medium and small span.
Description
Technical field
The present invention relates to a kind of folded truss structure, especially a kind of bi-directional folded truss bridge construction.
Background technology
Successfully the concept of deployable structure is applied to from the Spanish architect Pinero sixties in last century first " 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 is of great interest, and correlational 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 ultimate principle of this kind of deployable structure is that each pair connecting rod passes through one
Individual post hinge is connected, and each pair connecting rod is only capable of around vertically being relatively rotated with the axis of this pair of connecting rod place plane, and other degree of freedom
It is restricted completely；Connection between scissors unit is to be hinged realization by unit endpoint node simultaneously.Scissors unit is connected group
Into folded truss.
Existing movable structure, its geometry only consider " beginning " and " end " two states, namely rugosity mostly
State and deployed condition.Conversion regime between the two states is substantially：Move in horizontal movable type, horizontal rotation movable type, space
Dynamic formula, pivots formula, Collapsible movable and combination moving type etc..But these openable roof structures only have translation or
The ability that person rotates, the in fact profile of whole roof structure not change.So these movable structures are not real meaning
Unstable s tructure in justice.
Typically using relatively rotating realized between scissors unit rod member, which has the duration for the expansion of deployable structure
The advantages of short, easy resettlement and repeatable utilization, the great interest of modern engineers is caused.But because node is related to complexity, just
Which is less used in large-span structure to spend the reasons such as difference.
Content of the invention
The technical problem to be solved is for above-mentioned the deficiencies in the prior art, and provides a kind of connecting node
Less, the good a kind of bi-directional folded truss bridge construction of the rigidity of structure, have the advantages that design and easy construction, can preferably meet and face
When property bridge is conveniently built and is moved and requirement of the Longspan Bridge to folder function.
For solving above-mentioned technical problem, following technical scheme is present invention employs:
A kind of bi-directional folded truss bridge construction, is made up of supporting construction and the panel construction in supporting construction, its feature
It is：The supporting construction be folded truss, the folded truss be included in span direction be connected quadrangular unit and will be described
The drag-line that folded truss is folded and launched；The quadrangular unit is connected to form in head and the tail ring by four scissors units；
The scissors unit is formed in respective midpoint pin joint by two equal length straight-bars；Four scissors units are formed after joining end to end
Have four upper chord nodes and four lower-chord panel points, constitute the upper chord node of each quadrangular unit of the folded truss and under
A drag-line is respectively provided with chord node；
The panel construction is made up of mud jacking by duct Slab element；The mud jacking by duct Slab element is by eight pieces of folded plates unit groups
Four fringe nodes are formed for rectangle and at four angles of rectangle after launching into, eight pieces of folded plates units；The rigid bridge
Four fringe nodes of panel unit are hinged with four of the quadrangular unit upper chord nodes；Eight pieces of folded plates lists
Unit is divided into four triangular plates and four pentagonal panels, according to be respectively counterclockwise the first triangular plate, the first pentagonal panel, the
Two pentagonal panels, the second triangular plate, the 3rd triangular plate, the 3rd pentagonal panel, the 4th pentagonal panel and the 4th triangular plate,
Common edge between them be respectively the first common edge, the second common edge, the 3rd common edge, the 4th common edge, the 5th common edge,
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 the
Four pentagonal panel common edges are the 8th common edge, and wherein the second pentagonal panel and the 3rd pentagonal panel common edge are public for the 9th
Side；In motor process, the first common edge is parallel to each other to the 6th common edge, and the 7th common edge is conllinear to the 9th common edge；The
One triangular plate, the first pentagonal panel, the second pentagonal panel, the second triangular plate and the 3rd triangular plate, the 3rd pentagonal panel,
4th pentagonal panel, the 4th triangular plate are to remain symmetrical with regard to the 7th common edge to the plane that the 9th common edge is formed
's.
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
Folded, along valley line to interior folding, the outward folding refers to that the angle between the exterior normal of adjacent triangular plate becomes big, inwardly
The angle folded between the exterior normal for referring to adjacent triangular plate diminishes.
First triangular plate is respectively the first folder in the sideline of the first common edge both sides with the angle of the 7th common edge
Angle and the second angle；The 3rd angle and the 4th folder is respectively in the sideline of the second common edge both sides with the angle of the 8th common edge
Angle；The 5th angle and the 6th angle is respectively in the sideline of the second common edge both sides with the angle of the 9th common edge；First angle
Equal with the 3rd angle, the second angle and the 5th angle are 90 °；First angle and the 4th angle are complementary, the 3rd angle and the 6th
Angle is complementary.
The straight-bar is the rod member of plane link or space structure.
The invention has the beneficial effects as follows, in moving process, it is that motion is compatible between mechanism, will not produces extra interior
Power, its stress performance are superior；And the folded truss of the present invention is single-degree-of-freedom system, reduces the quantity of driving means；Separately
Outward, as the number of components of present invention composition is far fewer than general foldable structure, therefore a kind of effect of brevity and lucidity is given people, gram
The various in disorder shortcoming of structure sense organ upper lever is taken；Which is easy to mobile and moves, reusable, and constructs reasonable, design
Simple with construction, it is particularly suitable for the bridge of medium and small span.
Description of the drawings
Below in conjunction with the accompanying drawings and embodiment the present invention is described in more detail：
Fig. 1 is the structural representation of scissors unit；
Fig. 2 is the structural representation of quadrangular unit；
Fig. 3 is the fully deployed schematic diagram of structure of mud jacking by duct Slab element；
Fig. 4 is half expanded schematic diagram of structure of mud jacking by duct Slab element；
Fig. 5 is the structural representation of the folded truss of cloth rope；
Fig. 6 is the structural representation that overall structure is launched；
Fig. 7 is the structural representation that overall structure half is launched.
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 by two straight-bars 21 and 22 in two bars
Midpoint pin joint is formed, 1 two straight-bars 21 of scissors unit and 22 equal lengths and in bar midpoint pin joint.Such as Fig. 2, scissors unit
1 head and the tail ring is connected to form quadrangular unit 4.
Structure is launched drag-line 3 and is tensed, and the folded truss 4 of cloth rope 3 is as shown in Figure 5.
Rigid bridge panel 5 is made up of mud jacking by duct Slab element 6 and is connected to form.Wherein eight pieces folded sheets 7 are foldable.Rigid bridge
Panel unit 6 is arranged on folded truss 4.As shown in figure 3, half launches such as Fig. 4 institutes when mud jacking by duct Slab element 6 is fully deployed
Show.Each mud jacking by duct Slab element 6 is made up of four triangular plates and four pentagonal panels, according to the counterclockwise the respectively the 1st
Angular plate 71, the first pentagonal panel 72, the second pentagonal panel 73, the second triangular plate 74, the 3rd triangular plate 75, the three or five side
Shape plate 76, the 4th pentagonal panel 77 and the 4th triangular plate 78.Common edge between them is respectively the first common edge 79, second
Common edge 710, the 3rd common edge 711, the 4th common edge 712, the 5th common edge 713, the 6th common edge 714, in addition the 1st
Angular plate and the 4th triangular plate common edge are the 7th common edge 715, and the first pentagonal panel and the 4th pentagonal panel common edge are
8th common edge 716, wherein the second pentagonal panel and the 3rd pentagonal panel common edge are the 9th common edge 717；In motor process
In, 79 to the 6th common edge 714 of the first common edge is parallel to each other, and 715 to the 9th common edge 717 of the 7th common edge is conllinear.First
Triangular plate 71, the first pentagonal panel 72, the second pentagonal panel 73, the second triangular plate 74 and the 3rd triangular plate the 75, the 3rd
Pentagonal panel 76, the 4th pentagonal panel 77, the 4th triangular plate 78 are to 717 shape of the 9th common edge with regard to the 7th common edge 715
Into plane symmetry.Two upper strata common nodes of two adjacent scissors units 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, and along valley line to interior folding, the outward folding refers to the folder between the exterior normal of adjacent plate
Angle becomes big, refers to that the angle between the exterior normal of adjacent plate diminishes to interior folding.First triangular plate is in the first common edge two
The sideline of side is respectively the first angle 718 and the second angle 719 with the angle of the 7th common edge；In the first pentagonal panel 72 two
The angle of side line the first common edge 79 and the second common edge 710 and the 8th common edge 716 is respectively the 3rd angle 720 and the 4th
Angle 721；The 5th angle 722 and the 6th is respectively in 73 both sides sideline of the second pentagonal panel with the angle of 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 723 ~ 726 in each on the outside of span mud jacking by duct Slab element 7 and following folded truss 4 wind up four
Individual node 41 ~ 44（As shown in Figure 5）It is hinged.In motor process, structure can be along span direction and perpendicular to two, span direction side
To launching and shrinking, as shown in Figure 6 during the expansion of overall structure structure.Lower edge arrangement drag-line, drag-line 3 during expansion on folded truss 4
Tense and be fixed at end bay, drag-line 3 relaxes during contraction（Such as Fig. 7）.Overall single dof mobility.
Claims (3)
1. a kind of bi-directional folded truss bridge construction, is made up of supporting construction and the panel construction in supporting construction, and which is special
Levy and be：The supporting construction is folded truss, and the folded truss is included in the quadrangular unit that span direction is connected and by institute
State the drag-line that folded truss is folded and launched；The quadrangular unit is by four scissors units in the connected group of head and the tail ring
Into；The scissors unit is formed in respective midpoint pin joint by two equal length straight-bars；After four scissors units join end to end
Four upper chord nodes and four lower-chord panel points are formed with, in the upper chord node of each the quadrangular unit for constituting the folded truss
Be respectively provided with a drag-line on lower-chord panel point；
The panel construction is made up of mud jacking by duct Slab element；The mud jacking by duct Slab element is by eight pieces of folded plates unit groups
Four fringe nodes are formed for rectangle and at four angles of rectangle after launching into, eight pieces of folded plates units；The rigid bridge
Four fringe nodes of panel unit are hinged with four of the quadrangular unit upper chord nodes；Eight pieces of folded plates lists
Unit is divided into four triangular plates and four pentagonal panels, according to be respectively counterclockwise the first triangular plate, the first pentagonal panel, the
Two pentagonal panels, the second triangular plate, the 3rd triangular plate, the 3rd pentagonal panel, the 4th pentagonal panel and the 4th triangular plate,
Common edge between them be respectively the first common edge, the second common edge, the 3rd common edge, the 4th common edge, the 5th common edge,
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 the
Four pentagonal panel common edges are the 8th common edge, and wherein the second pentagonal panel and the 3rd pentagonal panel common edge are public for the 9th
Side；In motor process, the first common edge is parallel to each other to the 6th common edge, and the 7th common edge is conllinear to the 9th common edge；The
One triangular plate, the first pentagonal panel, the second pentagonal panel, the second triangular plate and the 3rd triangular plate, the 3rd pentagonal panel,
4th pentagonal panel, the 4th triangular plate are to remain symmetrical with regard to the 7th common edge to the plane that the 9th common edge is formed
's；
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,
Along valley line to interior folding, the outward folding refers to that the angle between the exterior normal of adjacent triangular plate becomes big, to infolding
Angle between the folded exterior normal for referring to adjacent triangular plate diminishes.
2. bi-directional folded truss bridge construction according to claim 1, it is characterised in that：First triangular plate is first
The sideline of common edge both sides is respectively the first angle and the second angle with the angle of the 7th common edge；In the second common edge both sides
Sideline is respectively the 3rd angle and the 4th angle with the angle of the 8th common edge；Public with the 9th in the sideline of the second common edge both sides
The angle on side is respectively the 5th angle and the 6th angle altogether；First angle and the 3rd angle are equal, the second angle and the 5th angle
For 90 °；First angle and the 4th angle are complementary, and the 3rd angle and the 6th angle are complementary.
3. bi-directional folded truss bridge construction according to claim 1 and 2, it is characterised in that：The straight-bar be plane link or
The rod member of space structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611029909.5A CN106498839B (en) | 2016-11-15 | 2016-11-15 | A kind of bi-directional folded truss-type bridges structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611029909.5A CN106498839B (en) | 2016-11-15 | 2016-11-15 | A kind of bi-directional folded truss-type bridges structure |
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| Publication Number | Publication Date |
|---|---|
| CN106498839A true CN106498839A (en) | 2017-03-15 |
| CN106498839B CN106498839B (en) | 2018-05-18 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106930177A (en) * | 2017-05-17 | 2017-07-07 | 杭州金知科技有限公司 | A kind of telescopic emergency bridge |
| CN107415327A (en) * | 2017-07-12 | 2017-12-01 | 东南大学 | A kind of combined type deployable structure based on rigid paper folding unit |
| CN112458870A (en) * | 2020-11-12 | 2021-03-09 | 汕头大学 | Novel expandable bridge structure based on paper folding structure |
| WO2023060783A1 (en) * | 2021-10-11 | 2023-04-20 | 郑孝群 | Stretchable road bridge and manufacturing and construction method therefor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107415327A (en) * | 2017-07-12 | 2017-12-01 | 东南大学 | A kind of combined type deployable structure based on rigid paper folding unit |
| 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 |
| CN112458870A (en) * | 2020-11-12 | 2021-03-09 | 汕头大学 | Novel expandable bridge structure based on paper folding structure |
| WO2023060783A1 (en) * | 2021-10-11 | 2023-04-20 | 郑孝群 | Stretchable road bridge and manufacturing and construction method therefor |
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| Publication number | Publication date |
|---|---|
| CN106498839B (en) | 2018-05-18 |
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