Force transmission piece and concrete pavement

Abstract

The utility model relates to the technical field of field design, and provides a force transmission piece and a concrete pavement, the force transmission piece comprises a force transmission body, the force transmission body is provided with a first end and a second end which are oppositely arranged, the first end and the second end are respectively provided with a bending part, and a preset included angle is formed between the bending part and the force transmission body. The bending parts are arranged at the first end and the second end of the force transmission body, and the preset included angles are formed between the bending parts and the force transmission body, so that the pre-tightening force of the force transmission piece can be increased. When two adjacent concrete panels are poured and force transmission pieces are arranged in a joint between the two adjacent concrete panels at intervals, namely, the two adjacent concrete panels on the two sides of the joint are connected through the force transmission pieces, stress transmission between the two adjacent concrete panels can be increased, the two adjacent concrete panels are jointly stressed, and the stress between the two adjacent concrete panels is reduced. And uneven settlement caused by large local stress of the concrete pavement is effectively prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of site design, in particular to a force transmission piece and a concrete pavement. Background Art

[0002] During the operation of the building materials industrial park, the total mass of the mixer trucks, tank trucks, dump trucks, etc. running inside usually reaches 30 to 40 tons when fully loaded, which is far more than the total weight of an ordinary car. If the internal site ground is not properly designed, it may cause the site ground to crack and break, further leading to environmental problems such as infiltration of production wastewater and a large increase in ground dust.

[0003] Some industrial parks use highway design standards to design heavy-load pavements to reduce ground damage rates. However, during the construction of concrete pavements, expansion joints are set at certain intervals in accordance with relevant regulations to allow for thermal expansion and contraction of concrete. Force transmission parts are used to connect the two adjacent concrete pavement panels on both sides of the expansion joint to increase stress transfer between the two adjacent concrete pavement panels, so that the adjacent concrete pavement panels are stressed together, preventing uneven settlement caused by large local stress on the concrete pavement.

[0004] In the related art, one end of the force transmission member is located in a concrete pavement slab, and the other end is located in an adjacent concrete pavement slab. During use, the tensioning effect of the force transmission member is weak and the force transmission effect is poor. Utility Model Content

[0005] The first aspect of the utility model provides a force transmission member to solve the defects of weak tensioning effect and poor force transmission effect of the force transmission member in the prior art, and can increase the stress transfer between two adjacent concrete panel blocks so that the two adjacent concrete panels are subjected to force together.

[0006] A second aspect of the utility model provides a concrete pavement.

[0007] The first aspect of the utility model provides a force transmission member, comprising:

[0008] The force transmission body has a first end and a second end which are arranged opposite to each other. The first end and the second end are both provided with a bending portion, and a preset angle is formed between the bending portion and the force transmission body.

[0009] According to the force transmission member provided by the utility model, the bending portion of the first end and the bending portion of the second end are parallel to each other.

[0010] According to the force transmission member provided by the utility model, at least one of a groove and a protrusion is provided at intervals on the surface of the bending portion along the length direction of the bending portion;

[0011] and / or,

[0012] At least one of grooves and protrusions is arranged at intervals on the surface of the force transmission body along the length direction of the force transmission body.

[0013] The force transmission member provided by the utility model further includes a reinforcement member, and the reinforcement member abuts against the outer wall surface of the force transmission body.

[0014] According to the force transmission member provided by the utility model, an anti-rust layer is provided on at least one of the force transmission body and the reinforcement member.

[0015] According to the force transmission member provided by the utility model, the preset angle is any value in the range of 50° to 90°.

[0016] According to the force transmission member provided by the utility model, the preset angle is 60°.

[0017] According to the force transmission member provided by the utility model, the diameter of the force transmission body is d, wherein 20mm≤d≤30mm.

[0018] According to the force transmission member provided by the utility model, the length of the bending portion is L, wherein 100mm≤L≤150mm.

[0019] The second aspect of the utility model provides a concrete pavement, comprising at least two concrete panels and the force transmission member, wherein the force transmission member is respectively connected to two adjacent concrete panels.

[0020] The force transmission member provided by the utility model is provided with a bending portion at both the first end and the second end of the force transmission body, and the bending portion and the force transmission body are provided at a preset angle, so that the preload force of the force transmission member can be increased. When two adjacent concrete panels are cast, and the force transmission member is arranged at intervals in the joint between the two adjacent concrete panels, that is, the two adjacent concrete panels on both sides of the joint are connected by the force transmission member, the stress transfer between the two adjacent concrete panels can be increased, so that the two adjacent concrete panels are stressed together, and the uneven settlement caused by the large local stress on the concrete pavement can be effectively prevented.

[0021] The concrete pavement provided by the utility model has all the above advantages because it includes the above force transmission member. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 It is a structural schematic diagram of a force transmission member provided in an embodiment of the utility model;

[0024] Figure 2 It is a structural schematic diagram of a concrete pavement provided by an embodiment of the utility model;

[0025] Figure 3 It is a cross-sectional view of a concrete pavement provided by an embodiment of the utility model;

[0026] Figure 4 It is a structural schematic diagram of a concrete layer in a concrete pavement provided by an embodiment of the utility model;

[0027] Figure 5 It is a structural schematic diagram of a force transmission member provided in another embodiment of the utility model.

[0028] Reference numerals:

[0029] 100, compacted layer; 200, crushed stone cushion layer; 300, cement-stabilized crushed stone base layer; 400, concrete layer; 410, first joint; 420, second joint; 430, force transmission member; 431, force transmission body; 432, anti-rust layer; 433, bending part; 434, reinforcement member; 440, notch seam. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0032] In the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0033] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0034] Figure 1 It is a structural schematic diagram of a force transmission member provided in an embodiment of the utility model.

[0035] See also Figure 1 An embodiment of the utility model provides a force transmission member 430, which includes a rod-shaped force transmission body 431, the force transmission body 431 has a first end and a second end that are relatively arranged, the first end and the second end are both provided with a bending portion 433, and the bending portion 433 is arranged at a preset angle with the force transmission body 431.

[0036] This is equivalent to the force transmission body 431 being a bent structure rather than a linear structure. By providing a bent portion 433 at both the first end and the second end of the force transmission body 431, and providing a preset angle between the bent portion 433 and the force transmission body 431, the preload force of the force transmission member 430 can be increased. When two adjacent concrete panels, i.e., concrete road panel A and concrete road panel B, are cast, a force transmission member 430 is provided at intervals in the joint between the two adjacent concrete panels, i.e., the two adjacent concrete panels on both sides of the joint are connected by the force transmission member 430, which can increase the stress transfer between the two adjacent concrete panels, so that the two adjacent concrete panels are subjected to stress together, and effectively prevent uneven settlement caused by large local stress on the concrete pavement.

[0037] It is understandable that the force transmission member 430 provided by the utility model can increase the preload force of the force transmission member 430 by providing a bending portion 433 at both the first end and the second end of the force transmission body 431, and making the bending portion 433 and the force transmission body 431 form a preset angle. When two adjacent concrete panels are cast, and the force transmission member 430 is arranged at intervals in the joint between the two adjacent concrete panels, that is, the two adjacent concrete panels on both sides of the joint are connected by the force transmission member 430, the stress transfer between the two adjacent concrete panels can be increased, so that the two adjacent concrete panels are stressed together, and the uneven settlement caused by the large local stress on the concrete pavement can be effectively prevented.

[0038] Figure 2 It is a structural schematic diagram of a concrete pavement provided by an embodiment of the utility model; Figure 3 It is a cross-sectional view of a concrete pavement provided by an embodiment of the utility model; Figure 4 It is a structural schematic diagram of a concrete layer in a concrete pavement provided by an embodiment of the utility model.

[0039] See also Figures 2 to 4 In the application example of the embodiment of the present utility model, it can be seen that the bending portion 433 at the first end of the force transmission body 431 and the bending portion 433 at the second end are parallel to each other. It can also be understood that the bending portion 433 at the first end of the force transmission body 431 and the bending portion 433 at the second end of the force transmission body 431 are located in the same plane or parallel to each other.

[0040] With this arrangement, when two adjacent concrete panels are cast and the force transmission member 430 is spaced apart in the joint between the two adjacent concrete panels, the distances from the bent portion 433 at the first end of the force transmission body 431 and the bent portion 433 at the second end of the force transmission body 431 to the surface of the concrete panel are equal, which can facilitate construction.

[0041] Continue reading Figures 2 to 4 In some embodiments of the present invention, along the length direction of the bending portion 433, at least one of a groove and a protrusion is provided at intervals on the surface of the bending portion 433, that is, a groove can be provided on the surface of the bending portion 433, a protrusion can be provided on the surface of the bending portion 433, or a groove and a protrusion can be provided on the surface of the bending portion 433. When both a groove and a protrusion are provided on the surface of the bending portion 433, the groove and the protrusion are provided at intervals. This arrangement can increase the contact area between the bending portion 433 and the concrete panel, and further increase the preload force of the force transmission member 430.

[0042] Alternatively, along the length direction of the force transmission body 431, at least one of a groove and a protrusion is provided at intervals on the surface of the force transmission body 431, that is, a groove can be provided on the surface of the force transmission body 431, a protrusion can be provided on the surface of the force transmission body 431, or a groove and a protrusion can be provided on the surface of the force transmission body 431. When both a groove and a protrusion are provided on the surface of the force transmission body 431, the groove and the protrusion are provided at intervals. In the same manner, the contact area between the force transmission body 431 and the concrete panel can be increased, and the preload force of the force transmission member 430 can be further increased.

[0043] In addition, at least one of a groove and a protrusion may be provided at intervals on the surface of the bending portion 433 along the length direction of the bending portion 433, and at least one of a groove and a protrusion may be provided at intervals on the surface of the force transmission body 431 along the length direction of the force transmission body 431. This is equivalent to the force transmission member 430 being a threaded steel bar with a diameter d, wherein 20mm≤d≤30mm, that is, the diameter d may be 20mm, 22mm, 25mm, 27mm or 30mm, etc. This arrangement can increase the contact area between the bending portion 433 and the concrete panel, and the contact area between the force transmission body 431 and the concrete panel, and can further increase the preload force of the force transmission member 430.

[0044] In some embodiments of the present invention, the preset angles between the bending portions 433 at both ends of the force transmission body 431 and the force transmission body 431 are any value in the range of 50° to 90°, that is, the preset angles can be 50°, 55°, 60°, 70°, 80° or 90°. Preferably, the preset angle is 60°, at which time, the effect of increasing the preload force of the force transmission member 430 is more obvious.

[0045] In some embodiments of the present invention, the length of the bending portion 433 at both ends of the force transmission body 431 can be recorded as L, wherein 100mm≤L≤150mm. That is, the length L of the bending portion 433 can be 100mm, 110mm, 120mm, 130mm, 140mm or 150mm, etc.

[0046] Figure 5 It is a structural schematic diagram of a force transmission member provided in another embodiment of the utility model.

[0047] See also Figure 5 In some embodiments of the present invention, the force transmission member 430 further includes a rod-shaped reinforcement member 434, which abuts against the outer wall of the force transmission body 431, which is equivalent to the reinforcement member 434 and the force transmission body 431 being arranged side by side. This arrangement can improve the structural strength of the position where the force transmission body 431 is located.

[0048] In some embodiments of the present invention, in order to prevent the force transmission body 431 from rusting, an anti-rust layer 432 is provided at the joint position of the force transmission body 431. When a reinforcement member 434 is provided at the position where the force transmission body 431 is located, the anti-rust layer 432 can be provided on both the force transmission body 431 and the reinforcement member 434.

[0049] Continue to refer to 2 to Figure 4 The utility model also provides a concrete pavement, which comprises at least two concrete panels and the above-mentioned force transmission member, wherein the force transmission member is respectively connected to two adjacent concrete panels.

[0050] The concrete pavement is provided with a first joint 410 and a second joint 420 , which are crisscrossed, and a force transmission member 430 is provided at the position of the first joint 410 and the second joint 420 , which is perpendicular to the first joint 410 or the second joint 420 .

[0051] For example, the concrete pavement is a rectangular structure. In the area of ​​the rectangular structure, a first joint 410 is arranged along the length direction of the rectangular structure, and a second joint 420 is arranged along the width direction of the rectangular structure.

[0052] Generally, when the concrete pavement is a regular rectangle or square, the first joint 410 and the second joint 420 are arranged perpendicular to each other, and a force transmission member 430 is arranged at the position of one of the first joint 410 and the second joint 420, or at the positions of the first joint 410 and the second joint 420. The force transmission member 430 can be a φ30 HPB300 threaded steel bar, which is used to transmit stress, maintain stress balance between two adjacent concrete layers 400, and avoid damage to the concrete layer 400 due to stress concentration. A plurality of force transmission members 430 are arranged along the length direction of the first joint 410 or the second joint 420, and the spacing between two adjacent force transmission members 430 is 0.6 to 1.0 m.

[0053] The force transmission member 430 may be disposed perpendicularly to the axis of the first joint 410, or may have a certain angle with the axis of the first joint 410, such as a 30° angle, a 60° angle, etc. Similarly, the force transmission member 430 may be disposed perpendicularly to the axis of the second joint 420, or may have a certain angle with the axis of the second joint 420.

[0054] The distance between two adjacent first seams 410 is in the range of 4.5 m to 6 m; the distance between two adjacent second seams 420 is in the range of 4.5 m to 6 m.

[0055] A notch 440 is reserved at the edge of the first joint 410 or the second joint 420 arranged along the length direction of the concrete layer 400. The notch 440 can be left idle or filled with caulking material. The width of the notch 440 is in the range of 5 mm to 6 mm, and the depth of the notch 440 is in the range of 45 mm to 55 mm.

[0056] In order to make the connection between two adjacent concrete layers 400 tighter, at least one of the first joint 410 and the second joint 420 is a tongue-and-groove joint, that is, a joint between two adjacent cement concrete road panels where the middle tenon of one side panel is connected to the tongue and groove of the adjacent panel edge to transfer load.

[0057] It should be noted that, in addition to the top concrete layer 400, the concrete pavement generally also includes other subbase layers, such as a compacted layer 100, a crushed stone cushion layer 200, a cement-stabilized crushed stone base layer 300 and a concrete layer 400. The compacted layer 100, the crushed stone cushion layer 200, the cement-stabilized crushed stone base layer 300 and the concrete layer 400 are arranged in sequence from bottom to top.

[0058] The compaction coefficient of the rammed layer 100 is greater than or equal to 93%; the thickness of the crushed stone cushion layer 200 is in the range of 13 cm to 17 cm; the thickness of the cement-stabilized crushed stone base layer 300 is in the range of 16 cm to 20 cm; and the thickness of the concrete layer 400 is in the range of 21 cm to 25 cm.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A force transmission member, characterized in that: include: The force transmission body has a first end and a second end that are arranged opposite to each other, wherein the first end and the second end are both provided with a bending portion, and a preset angle is formed between the bending portion and the force transmission body; The bent portion of the first end and the bent portion of the second end are parallel to each other; Along the length direction of the bending portion, at least one of grooves and protrusions is spaced apart on the surface of the bending portion; and / or, along the length direction of the force transmission body, at least one of grooves and protrusions is spaced apart on the surface of the force transmission body.

2. The force transmission member according to claim 1, characterized in that: It also includes a reinforcement member, which abuts against the outer wall surface of the force transmission body.

3. The force transmission member according to claim 2, characterized in that: An anti-rust layer is provided on at least one of the force transmission body and the reinforcement.

4. The force transmission member according to claim 1, characterized in that: The preset angle is any value in the range of 50° to 90°.

5. The force transmission member according to claim 4, characterized in that: The preset angle is 60°.

6. The force transmission member according to any one of claims 1 to 5, characterized in that: The diameter of the force transmission body is d, wherein 20 mm ≤ d ≤ 30 mm.

7. The force transmission member according to any one of claims 1 to 5, characterized in that: The length of the bending portion is L, wherein 100 mm ≤ L ≤ 150 mm.

8. A concrete pavement, characterized in that: It comprises at least two concrete panels and the force transmission member according to any one of claims 1 to 7, wherein the force transmission member is respectively connected to two adjacent concrete panels.

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