CN-121976456-A - Foldable beam structure based on paper folding principle and application method thereof

CN121976456ACN 121976456 ACN121976456 ACN 121976456ACN-121976456-A

Abstract

The invention belongs to the technical field of bridge construction and emergency rescue, and particularly relates to a foldable beam structure based on a paper folding principle and a use method thereof, wherein the foldable beam structure comprises two single folding beams; the folding beam comprises a plurality of first folding unit cells and a plurality of second folding unit cells, the first folding unit cells and the second folding unit cells are distributed in a staggered mode along the axis direction of the folding beam body, the first folding unit cells and the second folding unit cells can be unfolded or folded along preset valley folds, a plurality of rectangular panels are arranged between the two single folding beams and are sequentially distributed along the axis direction of the single folding beam, two side edges of the rectangular panels are respectively connected with the two single folding beams, two rectangular side plates are respectively arranged at two ends of the folding beam body, and two side edges of the rectangular side plates are respectively connected with the two single folding beams.

Inventors

ZHAO LIANGJIE
LI MENG
LI KEFEI
JIANG LANG
CHEN XIAOYU

Assignees

西安航空学院

Dates

Publication Date: 20260505
Application Date: 20260211

Claims (10)

1. The foldable beam structure based on the paper folding principle is characterized by comprising two single folding beams (1), a plurality of rectangular panels (2) and two rectangular side plates (3); the two single folding beams (1) are parallel and are arranged at intervals to form a folding beam main body; the single folding beam (1) comprises a plurality of first folding unit cells (11) and a plurality of second folding unit cells (12), wherein the plurality of first folding unit cells (11) and the plurality of second folding unit cells (12) are distributed in a staggered manner along the axial direction of the folding beam main body, and the first folding unit cells (11) and the second folding unit cells (12) can be unfolded or folded along preset valley folds; the rectangular panels (2) are arranged between the two single folding beams (1) and are sequentially distributed along the axial direction of the single folding beams (1), wherein two side edges of the rectangular panels (2) are respectively connected with the two single folding beams (1); The two rectangular side plates (3) are respectively arranged at two ends of the folding beam main body, and two side edges of the rectangular side plates (3) are respectively connected with the two single folding beams (1).
2. The foldable beam structure based on the paper folding principle according to claim 1, characterized in that the first folded unit cell (11) and the second folded unit cell (12) both adopt bistable unit cell structures; The bistable unit cell structure comprises a first folding surface (101) and a second folding surface (102), wherein the first folding surface (101) and the second folding surface (102) are identical in structure, the first folding surface (101) and the second folding surface (102) are arranged in a mirror symmetry mode, and each side of the first folding surface (101) is connected with each side of the second folding surface (102) through a mountain crease.
3. A foldable beam structure based on the paper folding principle according to claim 2, characterized in that the first folding surface (101) and the second folding surface (102) each comprise a first triangular panel (1001), a second triangular panel (1002), a third triangular panel (1003) and a fourth triangular panel (1004); The first triangular panel (1001) and the second triangular panel (1002) have the same structure and are arranged in a mirror symmetry mode, wherein the first triangular panel (1001) and the second triangular panel (1002) are connected through a mountain crease AB; the third triangular panel (1003) and the fourth triangular panel (1004) have the same structure and are arranged in a mirror symmetry mode, wherein the third triangular panel (1003) and the fourth triangular panel (1004) are connected through a valley crease BO; the first triangular panel (1001) is connected with the third triangular panel (1003) through a mountain crease BC, and the second triangular panel (1002) is connected with the fourth triangular panel (1004) through a mountain crease BE.
4. A foldable beam structure based on the paper folding principle according to claim 3, characterized in that the inner angles +.a 4 C 4 B 4 and the inner angles +.b 4 A 4 C 4 of the first triangle panel (1001) satisfy the following conditions: Wherein, the The degree is the inner angle A 4 C 4 B 4 ; The degree is the inner angle B 4 A 4 C 4 ; The inner angles of the second triangle panel (1002) are angle A 1 E 1 B 1 and angle A 1 E 1 B 1 , which satisfy the following conditions: Wherein, the The degree is the inner angle A 1 E 1 B 1 ; is the degree of interior angle A 1 E 1 B 1 .
5. The foldable beam structure based on the paper folding principle according to claim 4, wherein the inner angles O 3 C 3 B 3 and O 3 B 3 C 3 of the third triangular panel (1003) satisfy the following conditions: Wherein, the The degree is the internal angle O 3 C 3 B 3 ; the degree is the internal angle O 3 B 3 C 3 ; The inner angles O 2 E 2 B 2 and O 2 B 2 E 2 of the fourth triangle panel (1004) satisfy the following conditions: Wherein, the The degree is the internal angle O 2 E 2 B 2 ; the degree of the internal angle O 2 B 2 E 2 .
6. A foldable beam structure based on the paper folding principle according to claim 3, characterized in that a first triangular panel in the first folding surface (101) is connected with a first triangular panel in the second folding surface (102) through a mountain crease AC; The third triangular panel in the first folding surface (101) is connected with the third triangular panel in the second folding surface (102) through a mountain crease OC, and the fourth triangular panel in the first folding surface (101) is connected with the fourth triangular panel in the second folding surface (102) through a mountain crease OE.
7. The foldable beam structure based on the paper folding principle according to claim 6, wherein the side edge of the rectangular panel (2) is connected with a mountain crease OC or a mountain crease OE in the second folded unit cell (12), the side edge length of the rectangular panel (2) is equal to the length of the mountain crease OC or the mountain crease OE, and the end edge length of the rectangular panel (2) is matched with the size of the interval between the two single folded beams (1).
8. The foldable beam structure based on the paper folding principle according to claim 6, characterized in that the side edges of the rectangular side edges (3) are connected with mountain folds AC or mountain folds AE in a first folded cell (11) located at the end of the foldable beam body, wherein the side edge length of the rectangular side edges (3) is equal to the length of the mountain folds AC or AE, and the end edge length of the rectangular side edges (3) is matched with the distance dimension between two single folded beams (1).
9. A foldable beam structure based on the principle of paper folding according to claim 3, characterized in that the first folding unit (11) and the second folding unit (12) are connected by a valley fold.
10. A method of using a foldable beam structure based on the paper folding principle as claimed in any one of claims 1 to 9, comprising: respectively unfolding the two single folding beams (1) along a preset bridge direction, wherein in the unfolding process of the single folding beams (1), a first folding unit cell (11) and a second folding unit cell (12) in the single folding beams (1) are unfolded along a preset valley crease; arranging the unfolded single folding beams (1) in parallel according to a preset interval to form a folding beam main body; a plurality of rectangular panels (2) are arranged between two single folding beams (1) to form a folding beam bridge deck; Two rectangular side plates (3) are respectively arranged at two ends of the folding beam main body.

Description

Foldable beam structure based on paper folding principle and application method thereof Technical Field The invention belongs to the technical field of bridge construction and emergency rescue, and particularly relates to a foldable beam structure based on a paper folding principle and a use method thereof. Background In the field of bridge construction and emergency rescue, the construction of temporary bridges is a key link for ensuring smooth traffic and implementing rescue actions, at present, the existing temporary bridges are mostly constructed by adopting metal materials, have excellent structural strength and durability, and are widely applied to various scenes needing temporary passage, such as post-disaster reconstruction or large-scale engineering sites, however, the weight and scale of the existing temporary bridges become important factors for restricting the rapid transportation and assembly of the existing temporary bridges in emergency deployment after disaster occurrence. In particular, the existing temporary bridge has the main problems of large weight and large volume, so that transportation becomes extremely difficult when roads are damaged and traffic is blocked after disasters occur, and in addition, the construction process of the existing metal bridge is relatively complex, professional equipment and a large amount of manpower are required, and the existing temporary bridge is difficult to complete rapidly in emergency situations, so that timeliness and effectiveness of rescue actions are affected. Therefore, there is a need for a temporary bridge solution that is lightweight, yet strong, easy to assemble, and safe and reliable to better meet the needs of emergency deployment after a disaster has occurred. Disclosure of Invention Aiming at the technical problems in the prior art, the invention provides a foldable beam structure based on a paper folding principle and a use method thereof, so as to solve the technical problems of difficult transportation and relatively complex construction process of the existing temporary bridge. In order to achieve the above purpose, the invention adopts the following technical scheme: The invention provides a foldable beam structure based on a paper folding principle, which comprises two single folding beams, a plurality of rectangular panels and two rectangular side plates, wherein the two single folding beams are arranged on the two rectangular side plates; The two single folding beams are arranged in parallel and at intervals to form a folding beam main body; The single folding beam comprises a plurality of first folding unit cells and a plurality of second folding unit cells, wherein the first folding unit cells and the second folding unit cells are distributed in a staggered manner along the axial direction of the folding beam main body, and the first folding unit cells and the second folding unit cells can be unfolded or folded along preset valley folds; The rectangular panels are arranged between the two single folding beams and are sequentially distributed along the axial direction of the single folding beams, wherein two side edges of the rectangular panels are respectively connected with the two single folding beams; the two rectangular side plates are respectively arranged at two ends of the folding beam main body, and two side edges of the rectangular side plates are respectively connected with the two single folding beams. Further, the first folding unit cell and the second folding unit cell adopt bistable unit cell structures; The bistable unit cell structure comprises a first folding surface and a second folding surface, wherein the first folding surface and the second folding surface are identical in structure, and are arranged in a mirror symmetry mode, and each side of the first folding surface is connected with each side of the second folding surface through a mountain crease. Further, the first folding surface and the second folding surface each comprise a first triangular panel, a second triangular panel, a third triangular panel and a fourth triangular panel; the first triangular panel and the second triangular panel have the same structure and are arranged in a mirror symmetry mode, wherein the first triangular panel and the second triangular panel are connected through a mountain crease AB; the third triangular panel and the fourth triangular panel have the same structure and are arranged in a mirror symmetry mode, wherein the third triangular panel and the fourth triangular panel are connected through a valley crease BO; The first triangular panel is connected with the third triangular panel through a mountain crease BC, and the second triangular panel is connected with the fourth triangular panel through a mountain crease BE. Further, the inner angles +.a 4C4B4 and the inner angles +.b 4A4C4 of the first triangle panel satisfy the following conditions: Wherein, the The degree is the inner angle A 4C4B4; The degree is the i