Assembly type concrete pavement slab joint connecting structure

Abstract

The utility model relates to the technical field of pavement paving, in particular to an assembly type concrete pavement slab joint connecting structure which comprises grooves formed in the side faces of concrete pavement slabs and steel bars, and the steel bars are arranged in spaces formed by the opposite grooves of the adjacent concrete pavement slabs. The space between every two adjacent concrete pavement slabs is filled with concrete aggregate, and the opposite grooves and the gaps between the grooves are filled with the concrete aggregate, so that the adjacent concrete pavement slabs are fixedly connected; the reinforcing steel bar is of a spiral structure, the load transmission capacity of the joint is further improved, concentrated stress is eliminated, the possibility of damage to the joint is reduced, and the appearance of the joint of the concrete pavement slab is neater.

Description

Technical Field

[0001] This utility model relates to the field of pavement technology, and in particular to a prefabricated concrete pavement panel joint connection structure. Background Technology

[0002] To reduce cracking of concrete pavement panels caused by thermal expansion and contraction, bulging, and drying shrinkage, prefabricated concrete pavement panels generally have joints in both the longitudinal and transverse directions to eliminate the adverse effects of temperature stress.

[0003] Traditional concrete pavement slab joints use a male-female joint design, where adjacent slabs have a groove on one side and a protrusion on the other, with the protrusion inserted into the groove. To ensure load transfer between adjacent slabs, reinforcing steel bars are needed, with one end inserted into the grooved slab and the other end into the protruding slab. Existing precast reinforced concrete designs also often use this structure, which increases construction steps and reduces installation efficiency.

[0004] Joints are the weakest points in cement concrete pavements. Pavement defects, such as pumping and misalignment, generally begin with joint damage, severely impacting aircraft taxiing comfort and pavement lifespan. To prevent pavement damage, joints and connections need to be optimized to extend pavement lifespan as much as possible. How to eliminate stress concentration and transfer loads in the joints and connections of precast pavement panels is a technical problem that urgently needs to be solved by those skilled in the art.

[0005] Therefore, there is an urgent need for a prefabricated concrete pavement panel joint connection structure that can improve installation efficiency while avoiding and reducing damage such as chipping edges and corners at the joints of the concrete pavement panels during use. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a prefabricated concrete pavement panel joint connection structure, which solves the technical problem of easy damage at the joints of existing concrete pavement panels.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0010] A prefabricated concrete pavement panel joint connection structure includes a groove provided on the side of the concrete pavement panel and reinforcing bars, wherein the reinforcing bars are provided in the space formed by the opposite grooves of adjacent concrete pavement panels.

[0011] Concrete aggregate is filled between adjacent concrete pavement panels, filling the opposing grooves and the gaps between the grooves to fix the adjacent concrete pavement panels together.

[0012] The reinforcing bars have a spiral structure.

[0013] The inner side of the groove has a rounded corner, and the radius of the rounded corner is 8-10mm.

[0014] The groove openings of adjacent concrete pavement panels are arranged opposite each other.

[0015] The height of the groove is 76-78mm.

[0016] The radius of the spiral structure of the reinforcing bar is 30-32 mm.

[0017] The diameter of the reinforcing bar is 8-10mm.

[0018] The groove is deeper than 30mm so that the two sides of the reinforcing bar of the spiral structure can be placed in the space formed by the groove.

[0019] The joint width between adjacent concrete pavement panels is 8-10 mm.

[0020] (III) Beneficial Effects

[0021] The beneficial effects of this utility model are: the prefabricated concrete pavement panel joint connection structure proposed in this utility model embodiment has a groove set on the side of the concrete pavement panel joint and filled with concrete aggregate, so that the concrete aggregate and the groove are fully engaged, which makes the integrity between adjacent concrete pavement panels better, facilitates construction and assembly, and is economical.

[0022] The embedded spiral steel bars in the aggregate further enhance the load transfer capacity at the joint, eliminate concentrated stress, and reduce the possibility of damage at the joint.

[0023] The corners on the inner side of the groove are rounded to avoid and reduce the occurrence of chipping or chipping of the groove at the joint of the concrete pavement during the installation of reinforcing bars, making the joint of the concrete pavement more neat in appearance. Attached Figure Description

[0024] Figure 1 This is a structural schematic diagram (front sectional view) of the concrete pavement panel joint connection structure of this utility model;

[0025] Figure 2 This is a schematic diagram (side sectional view) of the concrete pavement panel joint connection structure of this utility model.

[0026] [Explanation of Labels in the Attached Image]

[0027] 1: Concrete pavement slab;

[0028] 2: Groove;

[0029] 3: Reinforcing steel bars;

[0030] 4: Rounding;

[0031] 5: Concrete aggregate. Detailed Implementation

[0032] To better explain and facilitate understanding of this invention, exemplary embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be clearer and more thorough in its understanding and will fully convey the scope of the invention to those skilled in the art.

[0033] See appendix Figure 1-2 This utility model proposes a prefabricated concrete pavement panel joint connection structure, including grooves 2 on the side of a concrete pavement panel 1 and reinforcing bars 3 between the opposite grooves 2 of adjacent concrete pavement panels 1. After the concrete pavement panels 1 are assembled, gaps are formed between adjacent concrete pavement panels, i.e., concrete pavement panel joints. Concrete aggregate 5 is filled between adjacent concrete pavement panels 1, filling the grooves 2 on the side of the concrete pavement panel 1 and the gaps between the grooves 2, so as to fix the adjacent concrete pavement panels 1 together, thereby making the concrete aggregate 5 fully interlock with the grooves 2, improving the overall integrity between adjacent concrete pavement panels 1, facilitating construction and assembly, and reducing costs.

[0034] The groove 2 is set on the opposite side of the adjacent concrete pavement panel 1, with the opening of the groove 2 facing outward and the openings of the groove 2 of the adjacent concrete pavement panel 1 being set opposite each other. The corners of the adjacent sides of the groove 2 are rounded 4 to avoid and reduce the phenomenon of edge or corner chipping of the groove 2 at the joint of the concrete pavement panel 1 during the installation of the reinforcing steel bar 3, so as to make the joint of the concrete pavement panel 1 more neat.

[0035] The reinforcing bars 3 are placed between the opposite grooves 2 of adjacent concrete pavement panels 1, with both sides of the reinforcing bars 3 placed within the opposite grooves 2 of adjacent concrete pavement panels 1. During installation, the reinforcing bars 3 are first tied and fixed to the grooves 2 of the adjacent concrete pavement panels 1, and then the concrete aggregate 5 is filled in.

[0036] The reinforcing bar 3 is spiral-shaped. Placing reinforcing bar 3 in the mortar-filled area between the grooves 2 (double female joints) further enhances the load-bearing capacity of the joint, eliminating stress concentration and reducing the possibility of joint damage. Considering ease of construction and economic efficiency, spiral-shaped reinforcing bars are used to increase the load-bearing capacity between the grooves 2 (double female joints). Reinforcing bar 3 can also be made of steel fiber.

[0037] The thickness of the concrete pavement panel 1 is 240mm, and the joint width between adjacent concrete pavement panels 1 is 8mm.

[0038] The height of the groove 2 is 76mm, and the depth of the groove 2 is greater than 30mm, so that the spiral-shaped steel bar 3 can be placed inside the groove 2. The distance between the top of the groove 2 and the top surface of the concrete pavement slab 1 is 82mm, and the distance between the bottom of the groove 2 and the bottom surface of the concrete pavement slab 1 is 82mm.

[0039] The corners of adjacent sides of the groove 2 are provided with rounded edges 4, the radius of which is R1 = 10mm. By setting rounded edges 4, the phenomenon of edge chipping and corner chipping in the groove 2 at the joint of the concrete pavement slab during the installation of steel bars 3 is avoided and reduced, making the joint of the concrete pavement slab more neat.

[0040] The spiral steel bar 3 has a radius R2 = 30mm. The spiral steel bar 3 is made of φ8 steel bar 3 and made into a spiral shape to enhance the load transfer capacity at the joint, eliminate stress concentration, and reduce the possibility of joint damage.

[0041] When assembling the prefabricated concrete pavement panel 1, before assembling the adjacent concrete pavement panel 1, place φ8 spiral steel bars 3 at the joint position and tie them in place. Then, connect the other concrete pavement panel 1 and leave the joint width. Then, inject high-strength cement mortar into the joint to fill the gap between the grooves 2 and the grooves 2, so as to connect the adjacent concrete pavement panels 1 into a whole.

[0042] High-strength retarded mortar is used for concrete aggregate 5 to improve the connection strength between concrete pavement panels 1.

[0043] The prefabricated concrete pavement panel 1 adopts a double-mother interlocking structure design. At the joint, the interlocking action of the concrete aggregate 5 and the groove 2, as well as the self-locking effect of the concrete aggregate 5, improves the load transfer efficiency between adjacent concrete pavement panels 1. The concrete aggregate 5 fills the gaps between the concrete pavement panels 1, increasing the density and improving the stability of the connection structure. The filling material in the joint is high-strength cement mortar.

[0044] Compared with the prior art, the joint design of the prefabricated concrete pavement panel 1 provided by this utility model is simple to assemble, can be quickly assembled, is convenient for emergency construction or maintenance, has high load-bearing capacity, and has good overall performance after assembly. It can solve the load transfer between adjacent rigid pavement panels, avoid and reduce the occurrence of edge and corner chipping at the joints during use, facilitate construction, is economical in cost, and has a neat appearance.

[0045] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0046] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0047] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0048] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0049] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A precast concrete pavement panel joint connection structure, characterized by, The concrete pavement panel (1) is provided with a groove (2) on the side, and a steel bar (3) is arranged in the space formed by the opposite grooves (2) of the adjacent concrete pavement panels (1). The space between the adjacent concrete pavement panels (1) is filled with concrete aggregate (5), which fills the opposite grooves (2) and the gap between the grooves (2) to fix the connection between the adjacent concrete pavement panels (1). The steel bar (3) has a spiral structure.

2. The assembled concrete pavement panel joint connection structure according to claim 1, wherein the inner side of the groove (2) is provided with a rounded corner (4) with a radius of 8-10 mm.

3. The assembled concrete pavement panel joint connection structure according to claim 1, wherein the groove (2) openings of the adjacent concrete pavement panels (1) are oppositely arranged.

4. The assembled concrete pavement panel joint connection structure according to claim 1, wherein the height of the groove (2) is 76-78 mm.

5. The assembled concrete pavement panel joint connection structure according to claim 1, wherein the spiral structure of the steel bar (3) has a radius of 30-32 mm.

6. The assembled concrete pavement panel joint connection structure according to claim 1, wherein the diameter of the steel bar (3) is 8-10 mm.

7. The assembled concrete pavement panel joint connection structure according to claim 1, wherein the depth of the groove (2) is greater than 30 mm, so that the steel bar (3) with a spiral structure can be placed on both sides of the space formed by the groove (2).

8. The assembled concrete pavement panel joint connection structure according to claim 1, wherein the joint width between the adjacent concrete pavement panels (1) is 8-10 mm. ​ ​ ​ ​ ​ ​ ​

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