CN219972910U - Integrally formed fiber reinforced composite truss - Google Patents
Integrally formed fiber reinforced composite truss Download PDFInfo
- Publication number
- CN219972910U CN219972910U CN202321157893.1U CN202321157893U CN219972910U CN 219972910 U CN219972910 U CN 219972910U CN 202321157893 U CN202321157893 U CN 202321157893U CN 219972910 U CN219972910 U CN 219972910U
- Authority
- CN
- China
- Prior art keywords
- frp
- truss
- integrally formed
- chord member
- reinforced composite
- 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.)
- Active
Links
- 239000003733 fiber-reinforced composite Substances 0.000 title claims abstract description 11
- 239000002184 metal Substances 0.000 claims abstract description 19
- 239000004744 fabric Substances 0.000 claims abstract description 17
- 229920005830 Polyurethane Foam Polymers 0.000 claims abstract description 8
- 239000011496 polyurethane foam Substances 0.000 claims abstract description 8
- 230000003014 reinforcing effect Effects 0.000 claims description 30
- 239000000853 adhesive Substances 0.000 claims description 8
- 230000001070 adhesive effect Effects 0.000 claims description 8
- 229920002748 Basalt fiber Polymers 0.000 claims description 3
- 240000007182 Ochroma pyramidale Species 0.000 claims description 3
- 239000004918 carbon fiber reinforced polymer Substances 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 239000002023 wood Substances 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 2
- 239000000835 fiber Substances 0.000 claims 1
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 48
- 239000011151 fibre-reinforced plastic Substances 0.000 description 48
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Abstract
The utility model discloses an integrally formed fiber reinforced composite truss, which comprises an FRP truss with a hollow structure and metal connectors arranged at two ends of the FRP truss; polyurethane foam is filled in the FRP truss; FRP prepreg cloth is integrally wound on the outer wall of the FRP truss; the truss has light overall mass and high bearing capacity.
Description
Technical Field
The utility model relates to the field of bridge engineering, in particular to an integrally formed fiber reinforced composite truss.
Background
Military bridges are bridges that ensure that forces, weapons, and equipment of the army pass through obstacles such as rivers, canyons, ditches, and battle-loss roads smoothly and are temporarily erected. Among the many types of military bridges, there is an important type of disassembled bridge, also called assembled bridge, which is often constructed by using truss structures, which are made of metal rods, and then assembling a plurality of truss units into a truss bridge by using simple connection members. The traditional truss bridge is made of steel, such as ZB-200 steel highway bridge assembled by army, each rod piece is spliced together in a welded connection mode, the steel is large in weight, many people are needed for splicing and erection, and the erection efficiency is low.
The Fiber Reinforced Polymer (FRP) has the advantages of high strength, light weight, corrosion resistance, fatigue resistance and the like, has strong designability, has the strength of about several times of that of a steel pull rod and the density of 1/5 of that of steel, has been widely applied to military bridges, aerospace and civil engineering structures, and has important significance in developing a truss with light weight, strong bearing capacity and simple and quick assembly by utilizing the FRP material.
Disclosure of Invention
The utility model aims to provide an integrally formed fiber reinforced composite truss.
The utility model aims at innovation points that: the FRP truss is formed by buckling and splicing two FRP members which are identical in structure and integrally formed, polyurethane foam is filled in the middle of the FRP truss, metal connectors are arranged at two ends of the FRP truss, FRP prepreg cloth is wound outside the FRP truss, the FRP truss is integrally formed by solidifying, reinforcing blocks are arranged at the joints, the strength of the joints is further improved, the structural designability is strong, the bearing capacity is high, and the overall weight is light.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
an integrally formed fiber reinforced composite truss comprises an FRP truss with a hollow structure and metal connectors arranged at two ends of the FRP truss; polyurethane foam is filled in the FRP truss; FRP prepreg cloth is integrally wound on the outer wall of the FRP truss;
the FRP truss is formed by buckling and splicing two FRP components with identical structures and U-shaped rod sections; the FRP member includes an upper chord and a lower chord; a plurality of vertical web members are uniformly arranged between the upper chord member and the lower chord member to form a plurality of rectangular frames; each rectangular frame is internally provided with a diamond-shaped supporting structure formed by connecting four diagonal web members end to end, and the vertexes of the supporting structures are respectively connected with the middle parts of the rod pieces of the rectangular frames; the FRP component is integrally formed in a vacuum auxiliary mode; the inner cavities of the joints of the upper chord member, the lower chord member and the vertical web member and the inner cavities of the joints of the supporting structure and the rod members of the rectangular frame are respectively provided with a reinforcing block and are fixed by structural adhesive.
Further, the metal connectors are respectively inserted into two ends of the upper chord member and the lower chord member and are fixed by structural adhesive and a shear pin; one end of the metal joint is dovetail-shaped, zigzag-shaped or wavy, and the other end of the metal joint is a single-lug or double-lug connecting seat.
Further, the reinforcing blocks comprise T-shaped reinforcing blocks arranged in the inner cavities at the joint of the upper chord member and the lower chord member and the vertical web member, first K-shaped reinforcing blocks arranged in the inner cavities at the joint of the inclined web member and the upper chord member and the lower chord member, second K-shaped reinforcing blocks arranged in the inner cavities at the joint of the inclined web member and the vertical web member and rice-shaped reinforcing blocks.
Further, the reinforcing block is made of solid wood or balsa wood.
Further, the FRP prepreg is CFRP prepreg, glass fiber prepreg or basalt fiber prepreg; the FRP prepreg cloth can be wound, solidified and molded for a plurality of times according to the designed wall thickness of the truss, and at least 7 layers are wound each time.
The beneficial effects of the utility model are as follows:
first: the FRP truss is formed by buckling and splicing two FRP members which are identical in structure and integrally formed, polyurethane foam is filled in the middle of the FRP truss, metal connectors are arranged at two ends of the FRP truss, FRP prepreg cloth is wound on the outside of the FRP truss, and reinforcing blocks are arranged at the intersections of the bars, so that the strength of the intersections of the bars is further improved, the structural integrity is good, the bearing capacity is high, and the weight of the truss can be reduced by 33% as a whole.
Second,: and a diamond supporting structure is arranged in the rectangular frame, so that the stability of the truss structure is ensured.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model.
Fig. 2 is a schematic structural view of the FRP member.
FIG. 3 is a schematic view of the structure of FRP members and reinforcing blocks.
FIG. 4 is a schematic view of a metal joint structure.
In the figure: 100 is an FRP truss, 110 is an FRP member, 111 is an upper chord, 112 is a lower chord, 113 is a vertical web, 114 is a diagonal web, 200 is a metal joint, 201 is a shear pin, 301 is a T-shaped reinforcing block, 302 is a first K-shaped reinforcing block, 303 is a second K-shaped reinforcing block, and 304 is a Mitsubing-shaped reinforcing block.
Detailed Description
The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings.
(refer to fig. 1 and 2) an integrally formed fiber reinforced composite truss, comprising an FRP truss 100 having a hollow structure and metal joints 200 provided at both ends of the FRP truss 100; polyurethane foam is filled in the FRP truss 100; FRP prepreg cloth is fully wound on the outer wall of the FRP truss 100;
the FRP truss 100 is formed by buckling and splicing two FRP members 110 with identical structures and U-shaped rod sections; the FRP member 110 includes upper and lower chords 111,112; a plurality of vertical web members 113 are uniformly arranged between the upper chord member 111 and the lower chord member 112 to form a plurality of rectangular frames; a diamond-shaped supporting structure formed by connecting four diagonal web members 114 end to end is arranged in each rectangular frame, and the vertexes of the supporting structures are respectively connected with the middle parts of the rod members of the rectangular frames; the FRP member 110 is formed by vacuum hot pressing in an auxiliary mode; reinforcing blocks are arranged in the inner cavities of the joints of the upper chord member 111, the lower chord member 112 and the vertical web member 113 and the inner cavities of the joints of the supporting structure and each rod member of the rectangular frame, and are fixed by structural adhesive.
Further, (referring to fig. 4) the metal connectors 200 are respectively inserted into two ends of the upper chord 111 and the lower chord 112, and are fixed by structural adhesive and shear pins 201; one end of the metal joint 200 is dovetail-shaped, zigzag-shaped or wavy, and the other end is a single-lug or double-lug connecting seat, the metal joint 200 is in the prior art, and chinese patent CN114561864a discloses a high-bearing-capacity integrally-formed composite joint and a manufacturing method, and in this patent, the structure and the manufacturing method of the metal joint 200 are disclosed, and are not described herein.
Further, the reinforcing blocks (refer to fig. 3) include a T-shaped reinforcing block 301 disposed in the inner cavity of the junction between the upper and lower chords 111,112 and the vertical web member 113, a first K-shaped reinforcing block 302 disposed in the inner cavity of the junction between the diagonal web member 114 and the upper and lower chords 111,112, a second K-shaped reinforcing block 303 disposed in the inner cavity of the junction between the diagonal web member 114 and the vertical web member 113, and a m-shaped reinforcing block 304.
Further, the reinforcing block is made of solid wood or balsa wood.
Further, the FRP prepreg is CFRP prepreg, glass fiber prepreg or basalt fiber prepreg; the FRP prepreg cloth can be wound, solidified and molded for a plurality of times according to the designed wall thickness of the truss, and at least 7 layers are wound each time.
Preparing two FRP members 110, placing reinforcing blocks in the inner cavity according to the shape of the connecting parts of the rod pieces, and adhering the reinforcing blocks and the inner wall by using a strong structural adhesive; winding a plurality of layers of prepreg cloth on the outer wall of the metal joint 200, then solidifying and inserting the prepreg cloth into two ends of the FRP member 110, and adhering the prepreg cloth with a strong structural adhesive; after being buckled, polyurethane foam is filled, the two FRP members 110 are bonded together by the polyurethane foam to form the FRP truss 100, and after a plurality of layers of prepreg cloth are wound on the outer wall of the FRP truss 100, the FRP truss is cured.
The described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Claims (5)
1. An integrally formed fiber reinforced composite truss, characterized by: the FRP truss comprises an FRP truss (100) with a hollow structure and metal connectors (200) arranged at two ends of the FRP truss (100); polyurethane foam is filled in the FRP truss (100); the FRP truss (100) is characterized in that the FRP prepreg cloth is fully wound on the outer wall of the FRP truss;
the FRP truss (100) is formed by buckling and splicing two FRP components (110) with identical structures and U-shaped rod sections; the FRP member (110) includes an upper chord (111) and a lower chord (112); a plurality of vertical web members (113) are uniformly arranged between the upper chord member (111) and the lower chord member (112) to form a plurality of rectangular frames; each rectangular frame is internally provided with a diamond-shaped supporting structure formed by connecting four diagonal web members (114) end to end, and the vertexes of the supporting structures are respectively connected with the middle parts of the rod pieces of the rectangular frame; the FRP member (110) is integrally formed with vacuum assist; reinforcing blocks are arranged in the inner cavities of the joints of the upper chord member (111), the lower chord member (112) and the vertical web member (113) and the inner cavities of the joints of the supporting structure and each rod piece of the rectangular frame, and are fixed by structural adhesive.
2. An integrally formed fiber reinforced composite truss as claimed in claim 1, wherein: the metal connectors (200) are respectively inserted into two ends of the upper chord member (111) and the lower chord member (112) and are fixed by structural adhesive and shear pins (201); one end of the metal joint (200) is in a dovetail shape, a zigzag shape or a wave shape, and the other end is a single-lug or double-lug connecting seat.
3. An integrally formed fiber reinforced composite truss as claimed in claim 1, wherein: the reinforcing blocks comprise T-shaped reinforcing blocks (301) arranged in the inner cavities at the joint of the upper chord member (111) and the lower chord member (112) and the vertical web member (113), first K-shaped reinforcing blocks (302) arranged in the inner cavities at the joint of the diagonal web member (114) and the upper chord member (111) and the lower chord member (112), second K-shaped reinforcing blocks (303) arranged in the inner cavities at the joint of the diagonal web member (114) and the vertical web member (113) and m-shaped reinforcing blocks (304).
4. An integrally formed fibre reinforced composite truss as claimed in claim 1 or claim 3 wherein: the reinforcing block is made of solid wood or balsa wood.
5. An integrally formed fiber reinforced composite truss as claimed in claim 1, wherein: the FRP prepreg cloth is CFRP prepreg cloth, glass fiber prepreg cloth or basalt fiber prepreg cloth; the FRP prepreg cloth may be wound several times, at least 7 layers each time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321157893.1U CN219972910U (en) | 2023-05-15 | 2023-05-15 | Integrally formed fiber reinforced composite truss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321157893.1U CN219972910U (en) | 2023-05-15 | 2023-05-15 | Integrally formed fiber reinforced composite truss |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219972910U true CN219972910U (en) | 2023-11-07 |
Family
ID=88577816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321157893.1U Active CN219972910U (en) | 2023-05-15 | 2023-05-15 | Integrally formed fiber reinforced composite truss |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219972910U (en) |
-
2023
- 2023-05-15 CN CN202321157893.1U patent/CN219972910U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102561171B (en) | Detachable type emergency bridge made of composite material | |
| Tayeb et al. | Design and realisation of composite gridshell structures | |
| CN111424850A (en) | Prefabricated reinforced concrete shear wall and construction method | |
| Canning et al. | MANUFACTURE, TESTING AND NUMERICAL ANALYSIS OF AN INNOVATIVE POLYMER COMPOSITE/CONCRETE STRUCTURAL UNIT. | |
| CN219972910U (en) | Integrally formed fiber reinforced composite truss | |
| CN109610339A (en) | Concrete continuous rigid structure bridge assembled unbalanced-loading preventing thrustor and its construction method | |
| CN105696450B (en) | Pin-connected panel RPC box beam and its construction method | |
| CN209538039U (en) | One kind closing up thrustor for prestressed concrete continuous rigid-framed bridge | |
| CN218346250U (en) | Connecting structure of crossbeam-free high-penetrating V-shaped column joint | |
| CN111119376A (en) | Reinforced multi-cavity concrete filled steel tube shear wall, system and construction method | |
| CN116591015A (en) | Integrally formed fiber reinforced composite truss and preparation method thereof | |
| CN214116980U (en) | Dry-type connection assembly type reinforced concrete frame structure with BRB obliquely and X-shaped arrangement | |
| CN109898645B (en) | Construction method of spliced load-bearing steel structure factory building framework | |
| CN111945545A (en) | Bridge facility that modularization was assembled | |
| CN112575891A (en) | Low-seismic-loss beam column node based on waveform BFRP connecting plate | |
| Zhao et al. | Key points in design of the sheet space structure system | |
| Zhou et al. | Concrete-filled tubular arch bridges in China | |
| CN212359279U (en) | Novel prestressed reinforced concrete composite beam | |
| CN117386189A (en) | Superimposed sheet construction braced system | |
| CN211774630U (en) | Steel pipe concrete special-shaped column and I-shaped steel beam connection node structure | |
| CN217232401U (en) | Concrete precast beam of assembled factory building | |
| Green | Glass-fiber-reinforced composites in building construction | |
| CN214328469U (en) | Modular assembly type honeycomb bridge structure | |
| CN215051986U (en) | Assembled prestressed corrugated web steel box-concrete combined simply supported beam | |
| CN219887175U (en) | Quick connecting structure for prefabricated parts of reinforced concrete structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |