Formed joint for concrete floors and roofs

Abstract

The application discloses a shaped anti-cracking expansion joint device for concrete ground and roof, which comprises a bottom waterproof bonding layer, a partition plate, an expansion joint assembly, a connecting lock and a connecting block. The bottom waterproof bonding layer is flush with a base layer. A pair of partition plates are symmetrically arranged on the bottom waterproof bonding layer. An anti-cracking expansion joint is formed between the pair of partition plates. The expansion joint assembly is arranged at the anti-cracking expansion joint and connected between the pair of partition plates, forming an anti-cracking expansion mechanism. One connecting lock is arranged at one end of one partition plate, and the other connecting lock is arranged at the other end of the other partition plate. The two connecting locks are matched and connected, so that two adjacent anti-cracking expansion mechanisms are linearly spliced. The connecting block is in L-shaped structure and connected between the partition plates of the two adjacent anti-cracking expansion mechanisms arranged vertically, so that the two adjacent anti-cracking expansion mechanisms are vertically spliced. The application relates to the technical field of building construction and can solve the problem of poor anti-cracking effect and anti-seepage effect of the traditional anti-cracking expansion joint.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building construction, and particularly relates to a shaped anti-cracking expansion joint for concrete ground and roof. BACKGROUND

[0002] According to different building requirements, the large surface layer building concrete surface layer such as ground and roof needs to be provided with an anti-cracking expansion joint to prevent the building surface layer from cracking due to temperature stress and other factors. The traditional conventional method is to set a warehouse, embed a steel pressing strip, and cut a joint.

[0003] The main problems of the traditional method are as follows: 1. The warehouse construction steps are complicated, the warehouse position is weak, and the warehouse position is easily damaged under the conditions of later driving and people, and water leakage is easily caused when the waterproof part is involved. 2. The embedded pressing strip mainly sets a 3*3m-6*6m steel pressing strip to ensure that the surface layer does not crack, the anti-expansion effect is poor, the pressing strip is difficult to remove in the later period, and it is difficult to ensure that the pressing strip is straight during construction, and the construction difficulty is large; 3. The joint width and base joint depth of the cut joint are difficult to meet the requirements, and the anti-cracking effect is poor.

[0004] Therefore, it is necessary to provide a shaped anti-cracking expansion joint for concrete ground and roof, which can solve the problems of poor anti-cracking effect and poor anti-seepage effect of the traditional anti-cracking expansion joint method in the prior art. SUMMARY

[0005] The purpose of the present application is to provide a shaped anti-cracking expansion joint for concrete ground and roof, which can solve the problems of poor anti-cracking effect and poor anti-seepage effect of the traditional anti-cracking expansion joint method in the prior art.

[0006] The present application is implemented as follows:

[0007] A shaped anti-cracking expansion joint for concrete ground and roof comprises a bottom waterproof bonding layer, a partition plate, an expansion joint assembly, a connecting lock and a connecting block. The bottom surface of the bottom waterproof bonding layer is flush with the base layer. A pair of partition plates are symmetrically arranged on the top surface of the bottom waterproof bonding layer, and an anti-cracking expansion joint is formed between the pair of partition plates. The expansion joint assembly is arranged at the anti-cracking expansion joint and connected between the pair of partition plates to form an anti-cracking expansion mechanism. One connecting lock is arranged at one end of one of the partition plates, and the other connecting lock is arranged at the other end of the other partition plate. The two connecting locks are matched and connected to enable two adjacent anti-cracking expansion mechanisms to be linearly connected. The connecting block is in an L-shaped structure and is connected between the partition plates of two adjacent anti-cracking expansion mechanisms arranged vertically, so that the two adjacent anti-cracking expansion mechanisms are vertically connected.

[0008] The partition plate is an L-shaped long strip structure. The horizontal section of the partition plate overlaps the top surface of the bottom waterproof adhesive layer. A crack-resistant expansion joint is formed between the vertical sections of a pair of partition plates. An expansion joint assembly is connected between the vertical sections of a pair of partition plates. A connecting block is connected to the horizontal section of the partition plate, and a connecting lock is connected to the end of the vertical section of the partition plate.

[0009] The bottom waterproof adhesive layer bends within the crack-resistant expansion joint between a pair of partition plates to form an n-shaped expansion section.

[0010] The expansion joint assembly includes a connecting rod, a top cover plate, an expansion joint, and a sliding member; the top cover plate is connected between the vertical sections of a pair of partition plates and covers the top of the crack-resistant expansion joint; one end of the connecting rod is installed on the top cover plate and inserted into the crack-resistant expansion joint; the expansion joint is located inside the crack-resistant expansion joint and is sleeved on the connecting rod; the expansion joint is movably connected to the vertical sections of a pair of partition plates through the sliding member.

[0011] The sliding component includes a sliding ball and a connecting plate; the expansion joint is disposed through the middle of the connecting plate, and the two sliding balls are respectively disposed at both ends of the connecting plate and located on both sides of the expansion joint; a pair of partition plates have a sliding track formed on their opposite sides, so that the two sliding balls are respectively slidably embedded in the sliding track of the pair of partition plates.

[0012] The slider has a spherical structure, and the slide is a long strip structure with an open circular cross-section. The diameter of the slide is larger than the diameter of the slider, and the opening width of the slide is larger than the thickness of the connecting plate but smaller than the diameter of the slider.

[0013] The connecting lock has a J-shaped structure, and the end of the connecting lock away from the partition plate has a tongue and groove joint, so that two adjacent anti-crack expansion mechanisms can be directly spliced ​​together through the tongue and groove joint of the connecting lock.

[0014] The connecting rod is a screw rod, and the expansion joint is a screw cylinder, so that the expansion joint is screwed onto the connecting rod through thread matching.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] 1. This invention features a crack-resistant expansion joint mechanism. The bottom waterproof adhesive layer with expansion joints ensures good waterproof and seepage-proof performance while meeting the requirements of concrete expansion and contraction. A pair of partition plates are connected by an expansion joint assembly. The sliding of the ball in the track satisfies the expansion and contraction adjustment function while providing good crack resistance. At the same time, the crack-resistant expansion joint has good structural integrity. This invention solves the problem of poor waterproof and seepage-proof performance and crack-resistant expansion and contraction performance of existing crack-resistant expansion joints, and can meet the construction requirements of crack-resistant expansion and contraction in large-area concrete pouring.

[0017] 2. Because the present invention is equipped with connecting locks and connecting blocks, two adjacent anti-crack expansion mechanisms that are spliced ​​in a straight line are connected by connecting locks, and the partition plates of two adjacent anti-crack expansion mechanisms that are spliced ​​in a vertical direction are connected by L-shaped connecting blocks. The assembly and splicing are convenient, the overall shape is beautiful, the structure is strong, and it is not easily damaged when vehicles or people are on it. The construction cost is low, and the construction quality and progress can be guaranteed. Attached Figure Description

[0018] Figure 1 This is a front cross-sectional view of the standardized crack-resistant expansion joint device for concrete floors and roofs according to the present invention;

[0019] Figure 2 This is a perspective view of the standardized crack-resistant expansion joint device for concrete floors and roofs according to the present invention;

[0020] Figure 3 This is a top view of the vertical splicing of the standardized crack-resistant expansion joint device for concrete floors and roofs according to the present invention.

[0021] Figure 4 This is a construction schematic diagram of the standardized crack-resistant expansion joint device for concrete floors and roofs according to the present invention.

[0022] Figure 5 This is a schematic diagram of the sliding component and expansion joint in the fixed crack-resistant expansion device for concrete floors and roofs of the present invention.

[0023] In the diagram, 1 is the bottom waterproof adhesive layer, 101 is the telescopic part, 2 is the sliding ball, 3 is the slide rail, 4 is the partition plate, 5 is the connecting rod, 6 is the top cover plate, 7 is the expansion joint, 8 is the connecting lock, 801 is the socket tongue and groove joint, 9 is the connecting plate, and 10 is the connecting block. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0025] Please see the appendix Figure 1 To be continued Figure 4 A fixed crack-resistant expansion joint device for concrete floors and roofs includes a bottom waterproof adhesive layer 1, partition plates 4, expansion joint components, connecting locks 8, and connecting blocks 10. The bottom surface of the bottom waterproof adhesive layer 1 is flush with the base layer. A pair of partition plates 4 are symmetrically arranged on the top surface of the bottom waterproof adhesive layer 1, and a crack-resistant expansion joint is formed between the pair of partition plates 4. The expansion joint components are arranged at the crack-resistant expansion joint and connected between the pair of partition plates 4 to form a crack-resistant expansion mechanism. One connecting lock 8 is arranged at one end of one partition plate 4, and another connecting lock 8 is arranged at the other end of the other partition plate 4. The two connecting locks 8 are matched and engaged, so that two adjacent crack-resistant expansion mechanisms are spliced ​​in a straight line. The connecting block 10 has an L-shaped structure and is connected between the partition plates 4 of two vertically arranged adjacent crack-resistant expansion mechanisms, so that two adjacent crack-resistant expansion mechanisms are spliced ​​vertically.

[0026] The bottom waterproof adhesive layer 1 is set at the bottom of the crack-resistant expansion joint between a pair of partition plates 4, and is firmly bonded to the base layer, thereby ensuring the waterproof and seepage-proof performance of the crack-resistant expansion joint. The expansion joint assembly is used to connect a pair of partition plates 4, which can play the role of crack resistance and expansion and contraction. The crack resistance effect is good, so as to meet the design requirements of the crack-resistant expansion joint.

[0027] The connecting lock 8 is used to connect two adjacent anti-cracking expansion joints located on the same straight line, and the connecting block 10 is used to connect two vertically adjacent anti-cracking expansion joints, so that all anti-cracking expansion joints can be connected into a whole and arranged along the design position of the expansion joint. The splicing is convenient and quick, and the construction process is simple.

[0028] Please see the appendix Figure 1 To be continued Figure 4 The partition plate 4 is an L-shaped long strip structure. The horizontal section of the partition plate 4 overlaps the top surface of the bottom waterproof adhesive layer 1. A crack-resistant expansion joint is formed between the vertical sections of a pair of partition plates 4. The expansion joint assembly is connected between the vertical sections of a pair of partition plates 4. The connecting block 10 is connected to the horizontal section of the partition plate 4, and the connecting lock 8 is connected to the end of the vertical section of the partition plate 4.

[0029] The partition plate 4 is bonded to the bottom waterproof adhesive layer 1 to form a whole, ensuring the waterproof and seepage-proof performance of the crack-resistant expansion joint. The partition plate 4 can be standardized and customized according to actual splicing requirements, facilitating modular splicing construction. The height of the partition plate 4 can be determined according to the thickness of the concrete surface layer, avoiding excessively long partition plates 4 exposed on the concrete surface layer, or excessively short partition plates 4 failing to form an effective crack-resistant expansion joint.

[0030] Please see the appendix Figure 1 The bottom waterproof adhesive layer 1 is bent within the crack-resistant expansion joint between a pair of partition plates 4 to form an n-shaped expansion section 101.

[0031] The length of the n-shaped expansion joint 101 can be adaptively adjusted according to actual expansion and contraction requirements to ensure that the bottom waterproof adhesive layer 1 will not crack or be damaged when the concrete expands and contracts, thereby ensuring the waterproof and seepage-proof performance of the bottom waterproof adhesive layer 1.

[0032] Preferably, the bottom waterproof adhesive layer 1 can be made of double-sided self-adhesive waterproof membrane, which mainly serves two purposes: first, to fix the partition plate 4 and prevent slippage; and second, to provide self-waterproofing.

[0033] Please see the appendix Figure 1 and attached Figure 2The expansion joint assembly includes a connecting rod 5, a top cover plate 6, an expansion joint 7, and a sliding member; the top cover plate 6 is connected between the vertical sections of a pair of partition plates 4 and covers the top of the crack-resistant expansion joint; one end of the connecting rod 5 is installed on the top cover plate 6 and inserted into the crack-resistant expansion joint; the expansion joint 7 is located inside the crack-resistant expansion joint and is sleeved on the connecting rod 5; the expansion joint 7 is movably connected to the vertical sections of the pair of partition plates 4 through the sliding member.

[0034] A pair of partition plates 4 are connected by a top cover plate 6, and a connecting rod 5 connects the top cover plate 6 and the expansion joint 7 to form an integral structure, ensuring the expansion and crack resistance of the expansion joint assembly.

[0035] Please see the appendix Figure 1 and attached Figure 5 The sliding component includes a slider 2 and a connecting plate 9; a telescopic joint 7 is disposed through the middle of the connecting plate 9, and two sliders 2 are respectively disposed at both ends of the connecting plate 9, and the two sliders 2 are respectively located on both sides of the telescopic joint 7; a pair of partition plates 4 have a slide rail 3 formed on their opposite sides, so that the two sliders 2 are respectively slidably embedded in the slide rail 3 of the pair of partition plates 4.

[0036] The sliding ball 2 and the sliding track 3 allow the sliding ball 2 to slide along the sliding track 3 when the concrete expands or contracts, thus playing a role in preventing cracking during expansion and contraction. The connecting plate 9 is used to connect the sliding ball 2 and the expansion joint 7, ensuring the integrity of the expansion joint assembly and thus giving the expansion joint assembly good performance in preventing cracking during expansion and contraction.

[0037] Please see the appendix Figure 1 The slider 2 has a spherical structure, and the slide 3 is a long strip structure with an open circular cross-section. The diameter of the slide 3 is slightly larger than the diameter of the slider 2, and the opening width of the slide 3 is slightly larger than the thickness of the connecting plate 9 and smaller than the diameter of the slider 2.

[0038] The sliding ball 2 can be fitted into the slide rail 3 to ensure smooth sliding during concrete expansion and contraction. At the same time, the opening of the slide rail 3 is small to ensure that the sliding ball 2 will not fall out of the slide rail 3, thus ensuring the crack resistance performance at the crack-resistant expansion joint.

[0039] Please see the appendix Figure 2 The connecting lock 8 has a J-shaped structure, and a socket tongue and groove 801 is formed at the end of the connecting lock 8 away from the partition plate 4, so that two adjacent anti-crack expansion mechanisms can be directly spliced ​​through the socket tongue and groove 801 of the connecting lock 8.

[0040] The connecting lock 8 is provided with a socket tongue and groove 801. The concave and convex parts of the socket tongue and groove 801 match each other, so that the two socket tongue and groove 801 can be firmly and reliably inserted through the insertion of the concave and convex parts, thereby improving the convenience and efficiency of the straight splicing of two adjacent anti-crack expansion mechanisms.

[0041] Please see the appendix Figure 1 The connecting rod 5 is a screw rod, and the telescopic joint 7 is a screw cylinder, so that the telescopic joint 7 is screwed onto the connecting rod 5 through thread matching.

[0042] The expansion joint 7 can be adjusted axially up and down on the connecting rod 5 by threaded connection of the screw and the screw cylinder to ensure that the height of the sliding ball 2 and the slide 3 are consistent.

[0043] Please see the appendix Figure 1 To be continued Figure 5 This invention can replace the traditional on-site layer compartment construction. The fixed crack-resistant expansion joint device of this invention is spliced ​​on-site along the expansion joint according to the size to meet the expansion joint spacing requirements. The process flow is as follows: foundation treatment - positioning and marking - positioning of the fixed crack-resistant expansion joint device of this invention - on-site splicing of the fixed crack-resistant expansion joint device of this invention - tying of surface layer reinforcement - pouring of cast-in-place concrete on the slab surface - installation of capping plate - repair.

[0044] The positioning method of the fixed crack-resistant expansion joint device of the present invention is as follows: the axial direction of the expansion part 101 of the bottom waterproof adhesive layer 1 is aligned with the axial direction of the expansion joint, the bottom waterproof adhesive layer 1 is flush with the base layer and firmly bonded, so that the bottom waterproof adhesive layer 1 completely covers the position of the expansion joint. Since the bottom waterproof adhesive layer 1 is an integral structure, the waterproof performance at the expansion joint is guaranteed.

[0045] The installation method and working principle of the fixed crack-resistant expansion joint device of the present invention are as follows: A galvanized steel plate of appropriate height is selected as the partition plate 4 according to the thickness of the concrete surface layer. A pair of partition plates 4 are symmetrically arranged on both sides of the expansion joint 101 of the bottom waterproof adhesive layer 1, forming a waterproof closed loop, further ensuring the overall waterproof effect of the partition position. The vertical sections of the pair of partition plates 4 are connected by a slide rail 3 to the sliding balls 2 on both sides of the expansion joint 7. The top cover plate 6 is connected to the top of the vertical sections of the pair of partition plates 4. The connecting rod 5 connects the top cover plate 6 and the expansion joint 7. During expansion and contraction, the sliding balls 2 can slide within the slide rail 3. Since the sliding balls 2 cannot detach from the slide rail 3, they can play a role in longitudinal expansion and contraction adjustment and lateral crack resistance.

[0046] The splicing method of the fixed crack-resistant expansion joint device of the present invention is as follows: two adjacent crack-resistant expansion joints located on the same straight line are connected by socket joint 801 of the connecting lock 8, and two adjacent crack-resistant expansion joints located at right angles are connected by connecting block 10 to the horizontal section of the partition plate 4, thereby connecting each crack-resistant expansion joint into a whole. The connecting block 10 and the partition plate 4 can be connected by conventional methods such as screwing or welding.

[0047] The above are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the invention. Therefore, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A shaped anti-cracking expansion joint device for concrete floors and roofs, characterized in that: The system includes a bottom waterproof adhesive layer (1), partition plates (4), expansion joint components, connecting locks (8), and connecting blocks (10). The bottom surface of the bottom waterproof adhesive layer (1) is flush with the base layer. A pair of partition plates (4) are symmetrically arranged on the top surface of the bottom waterproof adhesive layer (1), and a crack-resistant expansion joint is formed between the pair of partition plates (4). The expansion joint components are arranged at the crack-resistant expansion joint and connected between the pair of partition plates (4) to form a crack-resistant expansion mechanism. One connecting lock (8) is arranged at one end of one of the partition plates (4), and another connecting lock (8) is arranged at the other end of the other partition plate (4). The two connecting locks (8) are matched and engaged to make the two adjacent crack-resistant expansion mechanisms be spliced ​​in a straight line. The connecting block (10) has an L-shaped structure and is connected between the partition plates (4) of the two vertically arranged adjacent crack-resistant expansion mechanisms to make the two adjacent crack-resistant expansion mechanisms be spliced ​​vertically. The partition plate (4) is a long strip structure with an L-shaped cross section. The horizontal section of the partition plate (4) overlaps on the top surface of the bottom waterproof adhesive layer (1). A crack-resistant expansion joint is formed between the vertical sections of a pair of partition plates (4). The expansion joint assembly is connected between the vertical sections of a pair of partition plates (4). The connecting block (10) is connected to the horizontal section of the partition plate (4), and the connecting lock (8) is connected to the end of the vertical section of the partition plate (4). The bottom waterproof adhesive layer (1) bends within the crack-resistant expansion joint between a pair of partition plates (4) to form an n-shaped expansion joint (101). The expansion joint assembly includes a connecting rod (5), a top cover plate (6), an expansion joint (7), and a sliding member; the top cover plate (6) is connected between the vertical sections of a pair of partition plates (4) and covers the top of the crack-resistant expansion joint; one end of the connecting rod (5) is installed on the top cover plate (6); the connecting rod (5) is inserted into the crack-resistant expansion joint; the expansion joint (7) is located in the crack-resistant expansion joint and is sleeved on the connecting rod (5); the expansion joint (7) is movably connected to the vertical sections of a pair of partition plates (4) through the sliding member.

2. The shaped crack-resistant expansion joint device for concrete floors and roofs according to claim 1, characterized in that: The sliding component includes a slider (2) and a connecting plate (9); a telescopic joint (7) is disposed through the middle of the connecting plate (9), and two sliders (2) are respectively disposed at both ends of the connecting plate (9), and the two sliders (2) are respectively located on both sides of the telescopic joint (7); a pair of partition plates (4) have a slide (3) formed on their opposite sides, so that the two sliders (2) are respectively slidably embedded in the slide (3) of the pair of partition plates (4).

3. The shaped crack-resistant expansion joint device for concrete floors and roofs according to claim 2, characterized in that: The slider (2) is spherical, and the slide (3) is a long strip structure with an open circular cross section. The circular diameter of the slide (3) is larger than the diameter of the slider (2), and the opening width of the slide (3) is larger than the thickness of the connecting plate (9) and smaller than the diameter of the slider (2).

4. The shaped crack-resistant expansion joint device for concrete floors and roofs according to claim 1, characterized in that: The connecting lock (8) has a J-shaped structure. The end of the connecting lock (8) away from the partition plate (4) has a socket tongue and groove (801) so that two adjacent anti-crack expansion mechanisms can be directly spliced ​​through the socket tongue and groove (801) of the connecting lock (8).

5. The shaped crack-resistant expansion joint device for concrete floors and roofs according to claim 1, characterized in that: The connecting rod (5) is a screw rod, and the expansion joint (7) is a screw cylinder, so that the expansion joint (7) is screwed onto the connecting rod (5) through thread matching.

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