Fabricated elevated vertical take-off and landing field pavement connecting node
By using a stepped platform with precast concrete pavement panels and steel connectors to connect with the grouting layer in the prefabricated elevated vertical take-off and landing airfield pavement, the problems of high construction difficulty and insufficient load transfer capacity were solved, achieving efficient pavement panel connection and maintenance, and improving airport operational efficiency.
Patent Information
- Application Number
- CN202520049561.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-09
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2035-01-09
AI Technical Summary
Prefabricated elevated vertical take-off and landing pavement faces challenges during construction, including high requirements for transportation and hoisting equipment, significant technical difficulties in connection and fixing methods, high requirements for environmental compatibility and durability, difficulty in replacing damaged pavement panels, and insufficient load-bearing capacity of the pole connection methods.
The connection method adopts precast concrete pavement panels, steel reinforcement connectors and grouting layers. By forming a stepped platform at the edge of the pavement panel and fixing it with the grouting layer using I-shaped steel reinforcement connectors, a stable connection between the precast concrete panels is achieved.
It improves the force transmission effect of the pavement, simplifies construction, reduces maintenance time, meets the stress requirements of vertical take-off and landing field pavements, and improves airport operational efficiency.
Smart Images
Figure CN223675068U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of pavement facilities in road engineering, especially relates to a kind of assembled elevated vertical take-off and landing runway pavement connecting node. BACKGROUND
[0002] Assembled vertical take-off and landing runway pavement is a new type of pavement structure form, which is laid by using prefabricated pavement slab, and has the advantages of fast construction speed, controllable quality, convenient maintenance and the like.This pavement structure form is particularly suitable for vertical take-off and landing sites that need to be quickly constructed or repaired, such as vertical take-off and landing sites of elevated structures.
[0003] However, due to the immaturity of current technology, assembled elevated vertical take-off and landing runway pavement faces many challenges in application, such as high requirements for transportation and hoisting equipment, great technical difficulty in connection and fixing method, high requirements for environmental compatibility and durability, difficulty in replacing damaged pavement slab, and insufficient load transmission capacity of the inter-slab load transmission mechanism of the rod connection method.In order to solve these challenges, new technologies, new materials and new processes need to be continuously developed to improve the performance and construction quality of assembled elevated vertical take-off and landing runway pavement. SUMMARY
[0004] To solve the problems in the background art, the utility model provides an assembled elevated vertical take-off and landing runway pavement connecting node which is simple to assemble, has small construction difficulty and strong force transmission effect.
[0005] Therefore, the utility model adopts the following technical solutions:
[0006] An assembled elevated vertical take-off and landing runway pavement connecting node comprises a prefabricated concrete pavement slab, a steel bar connecting piece and a grouting layer, wherein:
[0007] One side edge of the prefabricated concrete pavement slab is recessed to form a stepped platform, and is centrally symmetrical with the other side edge, for butt joint with an adjacent prefabricated concrete pavement slab to form a vertical take-off and landing runway pavement;
[0008] The steel bar connecting piece in the shape of an I-beam comprises a prefabricated steel bar and prefabricated steel plates welded at both ends thereof;
[0009] An installation structure is formed on the platform for installing the steel bar connecting piece; the installation structure comprises an installation through hole and an installation slot, the installation slot is formed on a side plate surface away from the platform, and the installation through hole is formed in the installation slot and extends to the platform;
[0010] The installation through hole is sleeved on the outside of the prefabricated steel bar, and the grouting layer is formed between them for fixed connection of the steel bar connecting piece and the prefabricated concrete pavement slab; the prefabricated steel plates are embedded in the installation slot.
[0011] Preferably, the reinforcing bar connecting piece comprises a first prefabricated steel plate, a prefabricated reinforcing bar and a second prefabricated steel plate; the central part of the first prefabricated steel plate and the second prefabricated steel plate is provided with a through hole, and the two ends of the prefabricated reinforcing bar pass through the through holes in the central part of the first prefabricated steel plate and the second prefabricated steel plate respectively and are welded and fixed with the hole walls of the through holes.
[0012] Preferably, five installation structures are arranged equidistantly on the side edges of the prefabricated concrete pavement plate.
[0013] Preferably, the size of the installation groove is slightly larger than that of the first prefabricated steel plate and the second prefabricated steel plate, facilitating embedding operation.
[0014] Preferably, the size of the installation through hole is slightly larger than that of the prefabricated reinforcing bar, facilitating assembly and grouting of the pavement plate.
[0015] Preferably, the installation groove on the top surface of the prefabricated concrete pavement plate is larger in size than the first prefabricated steel plate, and the installation groove on the bottom surface of the prefabricated concrete pavement plate is the same in size as the second prefabricated steel plate, facilitating assembly of the reinforcing bar connecting piece.
[0016] Preferably, the side length of the prefabricated steel plate is at least 63.4 mm.
[0017] Preferably, the prefabricated reinforcing bar is made of HRB500 reinforcing bar, and the concrete pavement plate is made of C35 strength concrete.
[0018] Compared with the prior art, the utility model has the following beneficial effects:
[0019] 1. The utility model discloses two prefabricated concrete plates are connected through reinforcing bars to transfer vertical stress, so that the pavement plate is more convenient in the process of assembly and disassembly, and the force transmission effect is better.
[0020] 2. The structure of the utility model can reduce the maintenance time of the vertical take-off and landing field pavement to the maximum extent and improve the airport operation efficiency. BRIEF DESCRIPTION OF DRAWINGS
[0021] Figure 1 It is a sectional view of the structure of the utility model;
[0022] Figure 2 It is a structural schematic view of the reinforcing bar connecting piece of the utility model;
[0023] Figure 3 It is a sectional view of the prefabricated concrete pavement plate.
[0024] Figure 4 This is a schematic diagram of the present invention during assembly.
[0025] In the diagram: 1. Precast concrete pavement panel, 2. Reinforcing bar connector, 3. Installation structure, 11. Platform, 21. First precast steel plate, 22. Precast reinforcing bar, 23. Second precast steel plate, 31. Installation through hole, 32. Installation groove, 4. Grouting layer. Detailed Implementation
[0026] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments.
[0027] like Figures 1 to 3 As shown, the prefabricated elevated vertical take-off and landing pavement connection node of this utility model includes: a precast concrete pavement panel 1, a steel reinforcement connector 2, and a grouting layer 4, wherein:
[0028] One side edge of the precast concrete pavement panel 1 is recessed to form a stepped platform 11, which is centrally symmetrical with the opposite side edge, and is used to dock with the adjacent precast concrete pavement panel 1 to form a vertical take-off and landing pavement.
[0029] The I-shaped steel bar connector 2 includes a first precast steel plate 21, a precast steel bar 22, and a second precast steel plate 23. Both the first precast steel plate 21 and the second precast steel plate 23 have through holes in the center. The two ends of the precast steel bar 22 pass through the through holes in the center of the first precast steel plate 21 and the second precast steel plate 23 respectively and are welded and fixed to the hole walls.
[0030] The platform 11 is provided with an installation structure 3 for installing the steel bar connector 2. The installation structure 3 includes an installation through hole 31 and an installation groove 32. The installation groove 32 is located on the side plate away from the platform 11, and the installation through hole 31 is opened in the installation groove 32 and extends to the platform 11.
[0031] The grouting layer 4 is installed around the precast steel bars 22 by grouting, so that the precast steel bars are fixedly connected to the precast concrete pavement slab.
[0032] Specifically, the installation through hole 31 is sleeved on the outside of the precast steel bar 22 and fixed with the grout layer 4, and then the precast steel plate is embedded in the installation groove 32 to connect the adjacent precast concrete pavement panels.
[0033] Each side of the precast concrete pavement panel includes five mounting structures 3. The mounting groove 32 is slightly larger than the first precast steel plate 21 and the second precast steel plate 23 to facilitate embedding. The mounting through hole 31 is slightly larger than the precast steel bar 22 to facilitate the assembly and grouting of the pavement panel.
[0034] In an embodiment of the utility model, the installation groove on the bottom surface of the prefabricated concrete pavement panel 1 is the same size as the second prefabricated steel plate.
[0035] The assembly method of the utility model will be described as follows:
[0036] As Figure 4 shown, during installation: first, weld one end of the prefabricated steel bar 22 to the second prefabricated steel plate 23, then pass the other end of the prefabricated steel bar 22 through the installation through hole 31 of the underlying prefabricated concrete pavement panel, then embed the second prefabricated steel plate 23 into the installation groove of the underlying prefabricated concrete pavement panel, and assemble the underlying prefabricated concrete pavement panel into place; then, fit the installation through hole 31 of the overlying prefabricated concrete pavement panel onto the prefabricated steel bar 22, and grout the installation through hole 31, after grouting is completed, embed the prefabricated steel bar 22 into the installation groove of the overlying prefabricated concrete pavement panel, and finally weld the exposed end of the prefabricated steel bar 22 to the hole wall of the through hole of the first prefabricated steel plate 21.
[0037] One embodiment of the utility model is used in a vertical take-off and landing runway pavement, wherein the prefabricated concrete pavement panel is made of C35 strength concrete, and the design standard value of the compressive strength thereof is f c = 16.7 N / mm 2 .
[0038] The prefabricated steel bar is made of HRB500 steel bar, and for example, the tensile strength design standard value of the steel bar with a diameter d = 14 mm is f y = 435 n / mm 2 , and the shear strength design value is f v = 410 N / mm 2 .
[0039] The tensile strength of one steel bar is calculated according to the formula: The
[0040] The shear strength of one steel bar is calculated according to the formula: The
[0041] Since the tensile strength of the steel bar is greater than the shear strength of the steel bar, the minimum area of the prefabricated steel plate is A, so A satisfies: 66929 / 16.7 ≤ A, and the minimum area A of the steel plate is calculated to be ≥ 4007.8 mm 2 , and if a square steel plate is used, the minimum side length of the steel plate is 63.4 mm.
[0042] The tensile carrying capacity of the steel bar is calculated with reference to the Steel Structure Design Specification. The shear carrying capacity of the concrete panel is calculated with reference to the Concrete Design Specification.
Claims
1. A prefabricated elevated vertiport runway connection node, characterized by: The prefabricated concrete runway panel (1), the steel bar connecting piece (2) and the grouting layer (4) are included, wherein: One side edge of the prefabricated concrete runway panel (1) is recessed to form a stepped platform (11) which is centrally symmetrical with the other side edge, and is used to butt joint with the adjacent prefabricated concrete runway panel (1) to form a vertical take-off and landing runway; The I-shaped steel bar connecting piece (2) includes a prefabricated steel bar (22) and a prefabricated steel plate welded at both ends thereof; The installation structure (3) is arranged on the platform (11) and is used to install the steel bar connecting piece (2); the installation structure (3) includes an installation through hole (31) and an installation slot (32); the installation slot (32) is arranged on a side plate surface away from the platform (11); and the installation through hole (31) is arranged in the installation slot (32) and extends to the platform (11). The installation through hole (31) is sleeved on the prefabricated steel bar (22), and the grouting layer (4) is formed between them, which is used to fixedly connect the steel bar connecting piece (2) and the prefabricated concrete runway panel (1); and the prefabricated steel plate is embedded in the installation slot (32).
2. The prefabricated elevated vertiport runway connection node according to claim 1, characterized in that: The steel bar connecting piece (2) includes a first prefabricated steel plate (21), a prefabricated steel bar (22) and a second prefabricated steel plate (23); the central part of the first prefabricated steel plate (21) and the second prefabricated steel plate (23) is provided with a through hole; and the two ends of the prefabricated steel bar (22) pass through the through holes in the central parts of the first prefabricated steel plate (21) and the second prefabricated steel plate (23) and are welded and fixed with the hole walls of the through holes.
3. The prefabricated vertiport runway connection node of claim 1, wherein: Five installation structures (3) are arranged equidistantly on the side edge of the prefabricated concrete runway panel (1).
4. The prefabricated vertiport runway connection node of claim 2, wherein: The size of the installation slot (32) is slightly larger than that of the first prefabricated steel plate (21) and the second prefabricated steel plate (23), so that the embedding operation is facilitated.
5. The prefabricated elevated vertiport runway connection node of claim 1, wherein: The size of the installation through hole (31) is slightly larger than that of the prefabricated steel bar (22), so that the assembly of the runway panel and the grouting are facilitated.
6. The prefabricated vertiport runway connection node of claim 2, wherein: The size of the installation slot on the top surface of the prefabricated concrete runway panel (1) is larger than that of the first prefabricated steel plate (21), and the size of the installation slot on the bottom surface of the prefabricated concrete runway panel (1) is the same as that of the second prefabricated steel plate (23), so that the assembly of the steel bar connecting piece (2) is facilitated.
7. The prefabricated elevated vertiport runway connection node of claim 1, wherein: The side length of the prefabricated steel plate is at least 63.4 mm.
8. The prefabricated vertiport pavement connection node of claim 1, wherein: The prefabricated steel bar (22) is made of HRB500 steel bar, and the concrete runway panel (1) is made of C35 strength concrete.