CN112458870A - Novel expandable bridge structure based on paper folding structure - Google Patents

Novel expandable bridge structure based on paper folding structure Download PDF

Info

Publication number
CN112458870A
CN112458870A CN202011265030.7A CN202011265030A CN112458870A CN 112458870 A CN112458870 A CN 112458870A CN 202011265030 A CN202011265030 A CN 202011265030A CN 112458870 A CN112458870 A CN 112458870A
Authority
CN
China
Prior art keywords
vertex
vertexes
convex
expandable
paper folding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202011265030.7A
Other languages
Chinese (zh)
Other versions
CN112458870B (en
Inventor
喻莹
董淑钦
郭书瑜
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shantou University
Original Assignee
Shantou University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shantou University filed Critical Shantou University
Priority to CN202011265030.7A priority Critical patent/CN112458870B/en
Publication of CN112458870A publication Critical patent/CN112458870A/en
Application granted granted Critical
Publication of CN112458870B publication Critical patent/CN112458870B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
    • E01D19/125—Grating or flooring for bridges
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather

Landscapes

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

Abstract

The embodiment of the invention discloses a novel expandable bridge structure based on a paper folding structure, which comprises a bridge deck and an expandable structure, wherein each vertex of a plurality of first rhombic units is a common vertex, and a second rhombic unit is connected with the first rhombic units which are adjacent up, down, left and right; convex vertexes or concave vertexes are arranged on horizontal symmetrical shafts in the second rhombic units adjacent to each other from top to bottom, convex vertexes and concave vertexes are arranged on horizontal symmetrical shafts in the second rhombic units adjacent to each other from left to right, and gaps are formed between folding structures formed by the convex vertexes and the concave vertexes. The paper folding structure can be completely folded and unfolded into a two-dimensional plane, so that the developed extensible structure has larger shrinkage; the extensible structure is a multi-degree-of-freedom system, is controlled by the inhaul cable, is easy to realize deformation coordination, and is not easy to cause locking phenomenon in the folding and unfolding process; the invention can realize the integral expansion and closing of the full bridge and has high construction speed.

Description

Novel expandable bridge structure based on paper folding structure
Technical Field
The invention relates to an expandable bridge structure, in particular to a novel expandable bridge structure based on a paper folding structure.
Background
The expandable bridge has the advantages of convenient storage, small transportation occupied space, high construction speed and good application prospect, and is more generally regarded by the domestic and foreign bridge boundaries in recent years. In order to ensure smooth traffic transportation during field operations, disaster relief, outdoor exploration and new construction and reconstruction of bridges, bridges meeting the use requirements need to be constructed through rapid construction in a short period, and expandable bridges can meet the requirements. The expandable bridge body is manufactured in a factory, and after closure and folding transportation to the site, the expandable bridge body can be quickly converted from a mechanism to a structure to bear load by only expanding the expandable bridge body and then reinforcing the node by self-locking and other fastening measures, so that the traffic requirement is met. Due to the high dispersion of the components of the assembled bridge, the number of the components is large, the joint connection is complex during field assembly, and the construction speed is still limited to a certain extent. At present, most expandable bridges are single-degree-of-freedom systems, the expansion process is easy to cause the phenomenon of blocking, the folding is mainly aimed at a single bridge section, and the space saved after the folding is limited.
The rich shape provided by the folded paper in recent years gives a lot of inspiration to industrial design. Many researchers specially carry out scientific research on paper folding, and bring new technical breakthroughs such as machinery, mechanics, materials, control and the like for many fields, but the existing design does not have a feasible and conveniently-used expandable bridge structure.
Disclosure of Invention
The technical problem to be solved by the embodiment of the invention is to provide a novel expandable bridge structure based on a paper folding structure. Can realize fast from the mechanism to the transformation of structure in order to bear the load, can satisfy current requirement after the decking is erect to upper portion, full-bridge expansion has multi freedom, and the structural deformation harmony is good, is difficult for the card to die, easily control, convenient transportation, and construction speed is fast, and rigidity is good.
In order to solve the technical problem, an embodiment of the invention provides a novel expandable bridge structure based on a paper folding structure, which comprises a bridge deck and a Z-shaped expandable structure formed by a plurality of first rhombic units and a plurality of second rhombic units, wherein the vertexes of the first rhombic units are common vertexes, and the second rhombic units are connected with the first rhombic units which are adjacent up, down, left and right; convex vertexes or concave vertexes are arranged on horizontal symmetry axes in the second rhombic units which are adjacent from top to bottom, convex vertexes and concave vertexes are arranged on horizontal symmetry axes in the second rhombic units which are adjacent from left to right, gaps are formed between folding structures formed by the convex vertexes and the concave vertexes, and the bridge deck is laid on the expandable structure.
The first folding ridges are formed between the convex top points and the first top points on the horizontal symmetry axis, the first folding valleys are formed between the convex top points and the second top points on the horizontal symmetry axis, the second folding ridges and the third folding ridges are formed between the convex top points and the second top points on the second diamond-shaped unit, the length of the first folding ridges is smaller than that of the first folding valleys, the two sides of the first top points are folding valleys, the two sides of the second top points are folding ridges, and the forming mode of the concave top points is opposite to that of the convex top points.
And the four edges of the first rhombic unit and the edges of the second rhombic unit on the same line are folded ridges or folded valleys.
Wherein the first vertex is an acute angle.
The first diamond-shaped unit and the second diamond-shaped unit are of the same side length.
Wherein, the deployable structure is anchored between the two side panels in the deployed state through a guy cable.
The foldable pull cable is characterized in that a hinge is arranged at the turning position between the foldable structures, and an annular component is arranged on the hinge and used for fixing the pull cable.
The embodiment of the invention has the following beneficial effects: the paper folding structure can be completely folded and unfolded into a two-dimensional plane, so that the developed extensible structure has larger shrinkage; the extensible structure is a multi-degree-of-freedom system, is controlled by the inhaul cable, is easy to realize deformation coordination, and is not easy to cause locking phenomenon in the folding and unfolding process; the invention can realize the integral expansion and closing of the full bridge and has high construction speed.
Drawings
FIG. 1 is a plan view of a basic prototype structure of a paper folding structure;
FIG. 2 is an enlarged view of FIG. 1 at A;
FIG. 3 is a plan view of the paper folding structure of the present invention;
FIG. 4 is an enlarged view of FIG. 3 at B;
FIG. 5 is a schematic three-dimensional structure of a paper folding structure (with smaller interconnected pores);
FIG. 6 is a schematic view of a three-dimensional structure of a folded sheet (with larger interconnected pores);
FIG. 7 is a schematic view of the overall structure of the present invention;
fig. 8 is a schematic structural view of a hinge arranged at a folded ridge.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings.
To assist in understanding and practicing the present invention, embodiments of the present invention are described using a prototype such as that of fig. 1, which is a "zigzag" multi-layer folded structure composed of several alternating parallelogram-shaped structural units. Having a number of convex peaks 3E directed towards the outside of the periodic paper folding structure 3 of the invention and a number of concave peaks 3I directed towards the inside of the paper folding structure 3.
Referring to fig. 2, the convex vertex 3E is formed by converging a first, a second, a third and a fourth convex vertex hems 3E1, 3E2, 3E3 and 33 (the first, the second, the third and the fourth convex vertex hems 3E1, 3E2, 3E3 and 33 are first side a, second side b, third side c and fourth side d), the first, the third and the fourth hems 3E1, 3E3 and 33 are folded edges to be peak folds, the second convex vertex hems 3E2 are valley folds, the included angles between the second convex vertex hems 3E2 and the first and the third convex vertex hems 3E1 and 3E3 are respectively alpha, and the included angles between the fourth convex vertex hems 33 and the first, the third convex vertex hems 3E1 and 3E3 are respectively 180 ° -alpha.
The concave vertex 3I is formed by converging a first concave vertex folding edge 3I1, a second concave vertex folding edge 33, a third concave vertex folding edge 3I3, a fourth concave vertex folding edge 3I4, in the embodiment of the invention, the fourth convex vertex folding edge 33 of the convex vertex 3E is preferably used as the second concave vertex folding edge of the concave vertex 3I, so that the convex vertex 3E and the concave vertex 3I are arranged more densely, the first concave vertex folding edge 3I1, the third concave vertex folding edge 3I3 and the fourth concave vertex folding edge 3I4 are valley folds, the second concave vertex folding edge 33 is peak folds, the included angles between the second concave vertex folding edge 33 and the first concave vertex folding edge 3I1 and the third concave vertex folding edge 3I3 are respectively alpha, and the included angles between the fourth concave vertex folding edge 3I4 and the first concave vertex folding edge 3I1 and the third concave vertex folding edge 3I3 are respectively 180-alpha.
In addition to the structure described in fig. 1 and 2, diamond-shaped cells having a gap structure are formed at the convex apexes 3E and the concave apexes 3I, as shown in fig. 3 and 4.
Two types of rhomboid units are thus formed, one type being units aJ and aK, with no interstitial structure inside, and the other type being units aE and aI, with interstitial structure inside. The two types of rhombic structure units are arranged at intervals.
The middle points on four sides 3E1 at the intersection of the convex vertex 3E, the middle points on 3E3 and two points on 33 and 3E2 are connected to form a second diamond-shaped unit ABCD, the middle points on four sides 3I1 at the intersection of the concave vertex 3I, the middle points on 3I3 and two points on 33 and 3I4 are connected to form an adjacent second diamond-shaped unit FDGH, the convex vertex 3E and the concave vertex 3I are formed in opposite modes, the symmetry axes of the convex vertex 3E and the concave vertex 3I are boundaries of layers in a multilayer folding structure, and the first diamond-shaped unit JADF is positioned in each layer and is shared with the second diamond-shaped unit to connect the upper, lower, left and right adjacent second diamond-shaped units.
There is a gap between the folded structure formed at the convex apex and the concave apex, and specifically, referring to fig. 4, the a-side and C-side midpoints are taken as the vertices a and C of the diamond-shaped cell. The point B and the point D are selected on the side B and the side D, so that the lengths of an AB connecting line, a BC connecting line, a CD connecting line and an AD connecting line are equal to form a rhombic unit ABCD (namely a second rhombic unit) with a gap. The AB connecting line and the BC connecting line are folded peaks, and the CD connecting line and the AD connecting line are folded valleys. The side length of the rhombus is larger than the length of the AE connecting line.
Referring to FIG. 4, the obtuse included angles between the connection lines AB and BC and the second convex vertex folding edge 3E2 are both alpha1The obtuse included angles between the CD and DA connecting lines and the fourth convex vertex folding edge 33 are all alpha1The angle between the AB connecting line and the first convex top folded edge 3E1 is 180-alpha1The included angle between the connecting line of the + alpha, BC and the folded edge 3E3 of the third convex vertex is 180-alpha1The included angles between + alpha, AB and AE and between BC and CE are all alpha1Angle between α, AE, CE and EDAre all 180 degrees to alpha and 180 degrees>α1>90°。
F, D, G, H points are respectively taken on the first, second, third and fourth concave vertex folding edges 3I1, 33, 3I3 and 3I4, and FDGH connecting lines form rhombic cells FDGH (namely adjacent second rhombic cells) with gaps. Point F and Point G are taken at the midpoint of flaps 3I1 and 3I 3. The point D and the point H are selected on the side 33 and the side 3I4, so that the lengths of an FD connecting line, a DG connecting line, a GH connecting line and an HF connecting line are equal to form a rhombic unit FDGH with gaps. The FD connecting line and the DG connecting line are folded valleys, and the FH connecting line and the GH connecting line are folded peaks. The side length of the rhombus is larger than the length of the AE connecting line.
Referring to FIG. 4, the obtuse included angles between the FD and DG connecting lines and the second concave vertex folding edge 33 are both alpha1The obtuse included angles of the HG and HF connecting lines and the fourth concave vertex folding edge 3I4 are both alpha1The included angle between the FD connecting line and the first concave vertex folding edge 3I1 is 180-alpha1The included angle between the + alpha, GD connecting line and the third concave top point folded edge 3I3 is 180-alpha1The included angles between + alpha, FD and FI and the included angles between GD and GI are all alpha1The included angles between alpha, FI, IG and HI are all 180-alpha and 180-alpha>α1>90°。
In this way, the rhombic cells which are alternately arranged are constructed on the basis of the original configuration. The new configuration forms a more multi-layer folding structure after being folded, and the side surface can form a hole and is provided with more energy dissipation plates.
The invention sets the included angles alpha and alpha through the requirement1The desired size of the folding aperture can be achieved by human parameters. Referring to fig. 5, the invention can form a paper folding structure with small side pores. Referring to fig. 6, the invention can also form a paper folding structure with larger side pores.
As shown in fig. 7 and 8, in the implementation of the invention, the expandable structure is expanded, the structural plate can be made of materials and have dimensions determined according to the stress performance, the joint connection needs to be specially designed, the hinge 4 at the peak folding part is arranged at the upper part of the plate, the hinge at the valley folding part is provided with the annular component fixing inhaul cable 2, the hinge at the valley folding part is arranged at the upper part of the plate, the annular component 5 is not arranged at the hinge, and a plurality of bridge panels are laid on the surface of the fixed and expanded structure.
In order to facilitate the installation of the bridge deck at the upper part, part of the plate at the intersection of the convex nodes is cut off, so that more installation space is provided for the connection of the expandable structure and the bridge deck, and stress concentration is reduced. A groove may be provided at the top of the cut-out plate of the deployable structure and an insert may be provided at a corresponding position of the fabricated deck. The bridge deck insert is connected by inserting the bridge deck insert into a groove in a plate of the expandable structure, or by designing other connecting means commonly used in structures such as riveting, bolting, etc.
While the invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not to be limited to the disclosed embodiment, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims (7)

1. A novel expandable bridge structure based on a paper folding structure is characterized by comprising a bridge deck, a Z-shaped expandable structure formed by a plurality of first rhombic units and a plurality of second rhombic units, wherein the vertexes of the first rhombic units are shared, and the second rhombic units are connected with the first rhombic units which are adjacent up, down, left and right; convex vertexes or concave vertexes are arranged on horizontal symmetry axes in the second rhombic units which are adjacent from top to bottom, convex vertexes and concave vertexes are arranged on horizontal symmetry axes in the second rhombic units which are adjacent from left to right, gaps are formed between folding structures formed by the convex vertexes and the concave vertexes, and the bridge deck is laid on the expandable structure.
2. The novel expandable bridge structure based on paper folding structure as claimed in claim 1, wherein a first ridge is formed between the convex vertex and a first vertex on the horizontal symmetry axis, a first valley is formed between the convex vertex and a second vertex on the horizontal symmetry axis, a second ridge and a third ridge are formed between the convex vertex and two upper and lower vertices of the second diamond-shaped unit, the length of the first ridge is smaller than that of the first valley, the two sides of the first vertex are valleys, the two sides of the second vertex are ridges, and the concave vertex is formed in a manner opposite to that of the convex vertex.
3. The novel expandable bridge structure based on the paper folding structure as claimed in claim 2, wherein the four sides of the first diamond-shaped unit and the sides of the second diamond-shaped unit on the same line are the same ridges or valleys.
4. The novel expandable bridge construction based on paper folding structures as claimed in claim 3, characterized in that the first vertex is an acute angle.
5. The novel expandable bridge structure based on paper folding structure as claimed in claim 4, wherein the first diamond-shaped unit and the second diamond-shaped unit are of the same side length.
6. The novel expandable bridge structure based on paper folding structures according to any one of claims 1-5, characterized in that the expandable structure is anchored between the two side panels in the expanded state by means of guy cables.
7. The novel expandable bridge structure based on paper folding structure as claimed in claim 6, wherein a hinge is arranged at the turnover position between the expandable structures, and an annular member is arranged on the hinge for fixing the stay cable.
CN202011265030.7A 2020-11-12 2020-11-12 Novel expandable bridge structure based on paper folding structure Active CN112458870B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011265030.7A CN112458870B (en) 2020-11-12 2020-11-12 Novel expandable bridge structure based on paper folding structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011265030.7A CN112458870B (en) 2020-11-12 2020-11-12 Novel expandable bridge structure based on paper folding structure

Publications (2)

Publication Number Publication Date
CN112458870A true CN112458870A (en) 2021-03-09
CN112458870B CN112458870B (en) 2022-08-30

Family

ID=74826129

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011265030.7A Active CN112458870B (en) 2020-11-12 2020-11-12 Novel expandable bridge structure based on paper folding structure

Country Status (1)

Country Link
CN (1) CN112458870B (en)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005273249A (en) * 2004-03-24 2005-10-06 Takenaka Komuten Co Ltd Construction method for roof frame using panel unit
US7730925B1 (en) * 2007-05-09 2010-06-08 Pereira Carlos E Collapsable screen and design method
CN204417994U (en) * 2015-01-08 2015-06-24 吴新燕 Collapsible expansion light bridge
US20160039164A1 (en) * 2014-08-09 2016-02-11 Florian Tuczek Folded structure, interconnection of elements, sandwich panel, as well as folding process and folding tool
JP2017020620A (en) * 2015-07-14 2017-01-26 株式会社アートエクセル Foldable structure
CN106498839A (en) * 2016-11-15 2017-03-15 东南大学 A kind of bi-directional folded truss bridge construction
CN107841936A (en) * 2017-11-10 2018-03-27 中国人民解放军国防科技大学 Expandable bridge
CN107923571A (en) * 2015-08-14 2018-04-17 国立研究开发法人科学技术振兴机构 Can folded structure thing and can folded structure thing manufacture method, can folded structure material producing device and program
CN210031478U (en) * 2019-01-30 2020-02-07 广州大学 Anti-collision highway pier
CN111155417A (en) * 2019-12-30 2020-05-15 浙江大学 Beam falling prevention device based on paper folding and rebounding mechanism

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005273249A (en) * 2004-03-24 2005-10-06 Takenaka Komuten Co Ltd Construction method for roof frame using panel unit
US7730925B1 (en) * 2007-05-09 2010-06-08 Pereira Carlos E Collapsable screen and design method
US20160039164A1 (en) * 2014-08-09 2016-02-11 Florian Tuczek Folded structure, interconnection of elements, sandwich panel, as well as folding process and folding tool
CN204417994U (en) * 2015-01-08 2015-06-24 吴新燕 Collapsible expansion light bridge
JP2017020620A (en) * 2015-07-14 2017-01-26 株式会社アートエクセル Foldable structure
CN107923571A (en) * 2015-08-14 2018-04-17 国立研究开发法人科学技术振兴机构 Can folded structure thing and can folded structure thing manufacture method, can folded structure material producing device and program
CN106498839A (en) * 2016-11-15 2017-03-15 东南大学 A kind of bi-directional folded truss bridge construction
CN107841936A (en) * 2017-11-10 2018-03-27 中国人民解放军国防科技大学 Expandable bridge
CN210031478U (en) * 2019-01-30 2020-02-07 广州大学 Anti-collision highway pier
CN111155417A (en) * 2019-12-30 2020-05-15 浙江大学 Beam falling prevention device based on paper folding and rebounding mechanism

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
THOMAS A. EVANS ET AL: "Rigidly foldable origami gadgets and tessellations", 《ROYAL SOCIETY OPEN SCIENCE》 *

Also Published As

Publication number Publication date
CN112458870B (en) 2022-08-30

Similar Documents

Publication Publication Date Title
US20230243177A1 (en) Collapsible structure
US9376796B2 (en) Rapidly deployable structures based upon negative poisson's ratio (NPR) auxetic components
Gattas et al. Geometric assembly of rigid-foldable morphing sandwich structures
CN111519763B (en) Oval-like inner-opening large-span outer four-trimming double-roof laminated latticed shell system and application
US4012872A (en) Geodesic dome-like panels
Roovers et al. Geometric design of deployable scissor grids consisting of generalized polar units
US7143550B1 (en) Double network reticulated frame structure
US20110162294A1 (en) Double-layer Cable-strut Roof System
Soriano et al. G-shells: Flat collapsible geodesic mechanisms for gridshells
US4115963A (en) Building module
CN112458870B (en) Novel expandable bridge structure based on paper folding structure
CN106498839B (en) A kind of bi-directional folded truss-type bridges structure
Doroftei et al. An overview on the applications of mechanisms in architecture. Part I: bar structures
CN209211739U (en) Circular flat large span honeycomb type concrete empty stomach sandwich plate floor
Iffland Preliminary planning of steel roof space trusses
CN112406245B (en) Sandwich structure based on paper folding structure
CN211597182U (en) Corrugated steel plate shear wall and shear wall system applying same
WO2014170650A2 (en) Folded shell structures
JPH02283597A (en) Expanding truss structure and expansion synchronizer therefor
CN109138249A (en) Circular flat large span honeycomb type concrete empty stomach sandwich plate floor and construction method
CN212001596U (en) Circular inner-opening large-span outer three-trimming double-roof laminated latticed shell system
GB2335210A (en) Interlockable structural panels, e.g. for geodesic dome
CN112524471B (en) Periodic structure with gap
Roovers et al. A classification of singly curved deployable scissor grids
Liao Modeling and analysis of tripod-scissor deployable structures using mirrored assembly methods

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant