Ground mortise and tenon parting structure without kerfs

Abstract

The utility model relates to a kerf-free ground mortise and tenon parting structure. The kerf-free ground mortise and tenon parting structure comprises a parting template, the section of the parting template is zigzag; the saw-tooth shape is of a saw-tooth-shaped structure formed by a plurality of saw-tooth units. The concrete ground is provided with the sawtooth-shaped edge parts through the parting formwork, after pouring and tamping are completed, the sawtooth-shaped edge parts form a mortise and tenon structure, vertical loads can be transmitted to the concrete ground on the two sides, and after formwork removal, mortise and tenon parting can better improve anchoring performance, control uneven edge warping of floor seams and achieve efficient anchoring. The binding force at the parting position is enhanced; through the dowel bars, on the basis of the mortise and tenon structure, the force transmission between the plates is increased, and the strength of the terrace is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of floor, in particular to a mortise and tenon jointless structure for a seamless floor Background Art

[0002] When large-area pouring of concrete floor is carried out, it is usually necessary to carry out cutting joint treatment to avoid cracking and hollowing of the floor; the appropriate spacing of the floor cutting joints is usually carefully determined according to the characteristics of the floor materials used and the purpose of cutting joints. Generally speaking, setting the cutting joint spacing at about 4-6 meters is a reasonable choice to ensure that the floor materials are not prone to excessive deformation or cracks when environmental factors such as temperature and humidity change, thus effectively extending the service life of the floor

[0003] For concrete floors, the design of the cutting joint spacing particularly needs to consider the shrinkage characteristics of concrete and the influence of temperature changes. In order to prevent cracks caused by concrete shrinkage, the cutting joint spacing should usually be less than the slab span of the concrete. Therefore, at a spacing of about 4-6 meters, the floor materials are properly protected, avoiding damage caused by excessive deformation or cracks

[0004] In addition, the depth and width of the cutting joints are also factors that cannot be ignored. Generally speaking, the cutting joint depth should be less than 1 / 3 of the slab thickness to ensure that the cutting joints do not weaken the overall performance of the floor. At the same time, the cutting joint width also needs to be appropriately controlled to avoid loosening or damage of the materials in the cutting joint area

[0005] When determining the floor cutting joint spacing, it is also necessary to fully consider the use environment and intended use of the floor. For example, if the floor will bear the pressure of parking and transporting heavy equipment or vehicles, the cutting joint spacing should be appropriately reduced to prevent cracks or damage caused by excessive deformation

[0006] Based on this, the more commonly used technology in the prior art is to process the floor by means of cutting joints. The traditional building ground 4-meter or 6-meter cutting joint system is adopted for the bearing floor of the first floor of domestic buildings, and the overall jointless process within 1000m 2 -1500m 2 cannot be achieved. The 4-meter or 6-meter cutting joints bring more risks of concrete chipping caused by cutting joints. Over time, such joint chipping problems indirectly affect the travel of automated robots and the safety risk of forklift operations, increasing the tire breakage rate

[0007] Another treatment method is to use traditional angle steel and steel plates to connect with cement, which cannot achieve good adhesion, the flatness is not enough, the thickness of the angle steel is insufficient, the angle steel deforms and sinks during use, damaging the integrity of the cement, and over time, irreparable cracking, powdering, hollowing, deformation, and loud noise occur, affecting the safety management of forklift operators on site

[0008] How to achieve a seamless floor and reduce the safety hazards caused by cutting seams is a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0009] To solve the above problems of the prior art, the present utility model provides a mortise and tenon jointless floor seam structure.

[0010] To achieve the above object, the main technical solutions adopted by the present utility model include:

[0011] A mortise and tenon jointless floor seam structure includes a seam template; the cross-section of the seam template is serrated; the serrated shape is composed of several serration units to form a serrated structure.

[0012] Further, the serration unit is an isosceles triangle, the apex angle of the isosceles triangle is 60-120°, and the waist length is 30-100 mm.

[0013] Further, the serration unit is approximately an isosceles triangle, its apex angle is arc-shaped, the included angle between the two sides is 60-120°, and the side length is 30-100 mm.

[0014] Further, the seam template is formed by bending a flat steel or a steel plate, or is formed by welding several flat steels or steel plates end to end.

[0015] Further, the top of the cross-section of the seam template is a vertical part.

[0016] Further, a plurality of load transfer bars are arranged at intervals along the length direction of the seam template; the load transfer bars are detachably connected to the seam template; both ends of the load transfer bars extend out of the outside of the seam template.

[0017] Further, the load transfer bars are load transfer steel bars; the diameter of the load transfer steel bars is 20 mm; the distance between the load transfer steel bars is 300-500 mm; the length of the load transfer steel bars is 500-700 mm.

[0018] Further, a plurality of sheaths are arranged at intervals along the length direction of the seam template; the middle of the sheath is hollow, and a load transfer bar is movably inserted therein.

[0019] Further, one side of the seam template is a working surface, and a bracket for convenient fixation is arranged on the other side.

[0020] Further, the seam template is installed on the first steel mesh binding layer; from top to bottom in sequence at the bottom of the first steel mesh binding layer, there are a first polyethylene virgin film layer, a first geotextile layer, a second polyethylene virgin film layer, a second geotextile layer, and a gravel cushion layer; from bottom to top in sequence at the top of the first steel mesh binding layer, there are several fiber-reinforced concrete layers, a second steel mesh binding layer, and a surface layer.

[0021] The beneficial effects of the present utility model are as follows: By means of the slotted formwork, the concrete floor has a serrated edge. After the pouring is completed, the serrated edges form a mortise and tenon structure with each other, enabling the two-sided concrete floors to transmit vertical loads. After the formwork is removed, the mortise and tenon joints can better improve the anchoring performance, control the uneven warping of the floor joints, achieve efficient anchoring, and enhance the bonding force at the joint positions; By means of the dowel bars, on the basis of the mortise and tenon structure, the force transmission between the plates is increased and the strength of the floor is improved. Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model and should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other relevant drawings can also be obtained based on these drawings.

[0023] Figure 1 It is a schematic structural diagram of the present utility model;

[0024] Figure 2 It is a schematic diagram of the second embodiment of the structure of the present utility model;

[0025] Figure 3 It is a schematic diagram of the third embodiment of the structure of the present utility model;

[0026] Figure 4 It is a schematic diagram of the fourth embodiment of the structure of the present utility model;

[0027] Description of the reference numerals: 100, slotted formwork; 110, serrated unit; 120, vertical part; 130, first side; 140, second side; 150, third side; 160, fourth side; 170, arc part; 180, sheath; 200, dowel bar; 300, support; 400, first layer of steel mesh binding; 410, first layer of virgin polyethylene film; 420, first layer of geotextile; 430, second layer of virgin polyethylene film; 440, second layer of geotextile; 450, gravel cushion layer; 460, fiber-reinforced concrete layer; 470, second layer of steel mesh binding; 480, surface layer. Detailed Embodiments

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are only a part rather than all of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model. Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the present utility model to be protected, but merely represents the selected embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0029] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0030] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "provided with", "connected", etc. shall be understood in a broad sense. For example, "connected" 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, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0031] For the embodiments, please refer to Figure 1 as shown in

[0032] A seamless ground mortise and tenon joint structure includes a joint template 100; the cross-section of the joint template 100 is serrated; the serrated shape is composed of several serration units 110 to form a serrated structure; as Figure 1As shown in the figure, the slotted template 100 includes a first side 130, a second side 140, a third side 150, and a fourth side 160; the first side 130 and the second side 140 form a serrated unit 110, and the third side 150 and the fourth side 160 form a serrated unit 110; the serrated unit 110 is an isosceles triangle, the apex angle of the isosceles triangle is 60 to 120°, and the waist length is 30 to 100 mm; in one embodiment, the apex angle is 90°; the waist length is also the length of the first side 130 and the second side 140, or the third side 150 and the fourth side 160; in another embodiment, the slotted template 100 may also only include the first side 130, the second side 140, and the third side 150, where the first side 130 and the second side 140 form a serrated unit 110, and the second side 140 and the third side 150 form another serrated unit 110, which also belongs to the protection scope of the present invention. Correspondingly, in another embodiment, more sides can also be used to form more serrated units 110, such as three serrated units 110 and four serrated units 110;

[0033] It should be noted that the split formwork 100 of the present utility model needs to be disassembled. When in use, it is used to support the edge of the concrete floor on one side, and enables a zigzag structure adapted to the split formwork 100 to be formed during the pouring of the concrete floor. After the concrete floor on one side is poured and cured, the split formwork 100 is disassembled, and a sealing varnish is applied to the surface of the zigzag structure. Then, a zigzag structure is formed on the edge of the concrete floor. Further, another part of the concrete floor is poured on the opposite side of the zigzag structure, and the construction of the seamless floor is completed. Through the structure of the split formwork 100, the edge of the concrete floor has a zigzag structure, and a corresponding butting zigzag structure will also be formed on the other side after pouring. The two form a mortise and tenon structure, and the vertical load between the two sides of the floor can be transmitted between the sawtooth units 110, thus effectively avoiding problems such as stepped joints and warping edges caused by poor anchoring. After the split formwork 100 is disassembled, the concrete floor on the side poured in the subsequent process will closely adhere to the already formed floor on the other side to form a corresponding shape. Due to the different construction sequences of the concrete floors on both sides caused by the split formwork 100, the concrete floors on both sides of the position where the split formwork 100 is located will not adhere to form a whole, but will naturally form a relatively small gap. The relatively smooth surface of the split formwork 100 also helps the concrete on both sides of the gap to exist independently. More preferably, after the concrete floor on the side constructed first is cured, a sealing varnish is applied to the surface of the zigzag structure, which can more effectively avoid the adhesion of the concrete, enable the naturally formed gap to better absorb deformation, and avoid cracking problems caused by the shrinkage / expansion of the concrete. In one embodiment, the split formwork 100 is formed by bending a flat steel or a steel plate, or formed by welding the heads and tails of several flat steels or steel plates, so that the split formwork 100 has a relatively smooth surface, can avoid adhesion to the concrete floor during pouring, is convenient for demoulding, and can also ensure that the edge zigzag of the concrete floor has a relatively flat surface, avoiding adhesion to the concrete floor on the other side poured in the subsequent process.

[0034] In one embodiment of the present utility model, as Figure 2 shown, the sawtooth unit 110 is approximately an isosceles triangle, its apex angle is arc-shaped, the included angle between the two sides is 60 - 120°, and the side length is 30 - 100 mm; the arc-shaped apex angle is like Figure 2 the arc portion 170 in, and the arc-shaped shape is more suitable for the molding of the concrete, and also enables the concrete during pouring to better fill the position of the arc portion 170.

[0035] In an embodiment of the present utility model, the top of the cross-section of the slotted formwork 100 is a vertical portion 120; the length of the vertical portion 120 can be set to 20 - 40 mm. By setting the vertical portion 120, the concrete floors on both sides of the slotted formwork 100 have higher strength and durability after pouring. Its corner part presents a right angle, rather than the serrated shape caused by the slotted formwork 100;

[0036] In an embodiment of the present utility model, a plurality of load transfer bars 200 are provided at intervals along the length direction of the slotted formwork 100; the load transfer bars 200 are detachably connected to the slotted formwork 100; both ends of the load transfer bars 200 extend out of the outer side of the slotted formwork. In an embodiment, the load transfer bars 200 are load transfer steel bars; the diameter of the load transfer steel bars is 20 mm; the spacing between the load transfer steel bars is 300 - 500 mm; the length of the load transfer steel bars is 500 - 700 mm; the function of the load transfer steel bars is to further enhance the transfer of the vertical load of the concrete floors on both sides, so as to further improve its flatness and stability; both sides of the load transfer steel bars are inserted into the concrete floor and permanently fixed after pouring. After the slotted formwork 100 is installed, the load transfer steel bars are directly inserted into the corresponding through holes on the slotted formwork 100. When the concrete floor on one side is poured, half of the load transfer steel bars are fixed in the concrete floor. The slotted formwork 100 is removed, and the concrete floor on the other side is poured, so that the load transfer steel bars penetrate and connect the concrete floors on both sides, enhancing the anchoring ability; after the concrete floor is formed, on the one hand, the small gaps of the serrated structure between the concrete floors on both sides provide shrinkage / expansion space, and the serrated structure can transfer the vertical load and maintain the force transfer stability of the ground. On the one hand, the load transfer steel bars can improve the structural strength of the concrete, and on the other hand, they can achieve the anchoring effect, realize the load transfer of the two concrete floors, and reduce the deformation amount when the concrete deforms due to temperature changes, thereby avoiding the generation of cracks and realizing the laying of a non-cut joint floor;

[0037] As Figure 3 shown, in an embodiment, a plurality of sheaths 180 are provided at intervals along the length direction of the slotted formwork 100; the middle of the sheath 180 is hollow, and a load transfer bar 200 is movably inserted therein; by adding the sheath 180, the sheath 180 is fixedly connected to the slotted formwork 100, so as to better realize the separation from the load transfer bar 200;

[0038] As Figure 4 shown, in an embodiment, one side of the slotted formwork 100 is a working surface, and a bracket 300 for convenient fixation is provided on the other side. In the figure, the left side is the working surface, and the slotted formwork 100 is more easily fixed by setting the bracket 300 on the other side;

[0039] In one embodiment, the slotted template 100 is installed on the first layer of steel mesh binding 400; from top to bottom, the bottom of the first layer of steel mesh binding 400 is successively provided with a first virgin polyethylene film layer 410, a first geotextile layer 420, a second virgin polyethylene film layer 430, a second geotextile layer 440, and a gravel cushion layer 450; from bottom to top, the top of the first layer of steel mesh binding 400 is successively provided with a number of fiber-reinforced concrete layers 460, a second layer of steel mesh binding 470, and a surface layer 480; the first virgin polyethylene film layer 410 is 0.5 mm thick; the second virgin polyethylene film layer 430 is 2 mm thick; the first geotextile layer 420 and the second geotextile layer 440 use geotextiles of more than 200 g; the fiber-reinforced concrete layer 460 includes a multi-layer structure and can be realized by means of multiple castings, such as Figures 1-4 In Figures 1-4 , 4 layers of fiber-reinforced concrete layers 460 are used. The polyethylene fibers incorporated in each layer need to be evenly dispersed, effectively improving the toughness of the self-leveling cement, enhancing the crack resistance performance, and ultimately enhancing the flexural strength of the self-leveling cement, achieving a seamless floor overall. It reduces safety problems such as seam edge collapse caused by cutting seams, and forklift safety, robot failures, and high tire breakage rates caused by the collapsed edges. Optimize the pain points in the building ground design code GB50037-2013 regarding the multiple seam edge collapses in the 4-meter or 6-meter cut seams of the first-floor bearing floor, and can improve the design defect of the seamless cut in the first-floor bearing floor in the building ground design code GB50037-2013, bringing a powerful seamless floor design solution to the design unit. It brings high efficiency, speed, beauty, and meets the load and strength requirements to the user unit, while taking into account the need for fewer seams in the floor and solving various safety problems caused by seam edge collapse due to cutting seams.

[0040] Application cases are as follows: For the first-floor bearing floor warehouse of Hefei Yonghui Logistics Warehouse, the user unit needs to invest a large number of robots for automatic warehouse operations and hopes that the floor is not cut; the user unit requires compliance with load strength requirements, high efficiency, and solutions to problems such as edge protection, settlement force transmission, good crack resistance performance, and high flexural strength, and hopes to be able to achieve no cutting seams and reduce seam edge collapse problems. It meets the problems of robot failures, tire breakage rates, and safety during the operation of the input robots;

[0041] Through the slotted structure of the present utility model, a very small slotted position is achieved, and vertical loads are transmitted between adjacent floor bins on both sides of the seam, and the vertical displacement between the floor bins is minimized (achieved jointly by the load-transferring steel bars and the serrated structure). It has the function of a template and the function of protecting the concrete corners (achieved jointly by the setting of the vertical part 120 and the micro-seam mechanism formed by the slotted structure). The load-transferring steel bars are anchored into the concrete to protect the vulnerable edges at the expansion joints of the concrete floor, and it has extremely high durability and an overall load-transferring function. Under the action of vertical loads, the load can be transferred from one side of the expansion joint to the other side.

[0042] The above are only embodiments of the present utility model, and thus do not limit the patent scope of the present utility model. Any equivalent transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in the relevant technical fields, shall be similarly included within the patent protection scope of the present utility model.

Claims

1. A mortise and tenon joint structure for a floor without cutting seams, characterized in that: It comprises a split template (100); the cross section of the split template (100) is sawtooth-shaped; the sawtooth shape is composed of a plurality of sawtooth units (110) forming a sawtooth structure.

2. The mortise and tenon joint structure for floor without cutting seams according to claim 1, characterized in that: The sawtooth unit (110) is an isosceles triangle, the vertex angle of the isosceles triangle is 60-120 degrees, and the waist length is 30-100 mm.

3. The mortise and tenon joint structure for floor without cutting seams according to claim 1, characterized in that: The sawtooth unit (110) is approximately an isosceles triangle, the vertex of which is in the shape of an arc, the angle between two sides is 60 to 120 degrees, and the side length is 30 to 100 mm.

4. The mortise and tenon joint structure for floor without cutting seams according to claim 1, characterized in that: The split template (100) is formed by bending a flat steel or a steel plate, or by welding a plurality of flat steels or steel plates end to end.

5. The mortise and tenon joint structure for floor without cutting seams according to claim 1, characterized in that: The top of the cross section of the split template (100) is a vertical portion (120).

6. The mortise and tenon joint structure for floor without cutting seams according to claim 1, characterized in that: A plurality of force transmission rods (200) are arranged on the split template (100) at intervals along its length direction; the force transmission rods (200) are detachably connected to the split template (100); and both ends of the force transmission rods (200) extend out of the outside of the split template (100).

7. The mortise and tenon joint structure for floor without cutting seams according to claim 6, characterized in that: The force transmission rod (200) is a force transmission steel bar; the diameter of the force transmission steel bar is 20 mm; the spacing between the force transmission steel bars is 300-500 mm; and the length of the force transmission steel bar is 500-700 mm.

8. A slitless floor mortise and tenon joint structure according to claim 6 or 7, characterized in that: A plurality of protective sleeves (180) are arranged at intervals on the split template (100) along its length direction; the protective sleeve (180) is hollow in the middle, and a force transmission rod (200) is movably inserted therein.

9. The mortise and tenon joint structure for floor without cutting seams according to claim 1, characterized in that: One side of the split template (100) is a working surface, and the other side is provided with a bracket (300) for easy fixation.

10. The mortise and tenon joint structure for floor without cutting seams according to claim 1, characterized in that: The split template (100) is installed on a first steel mesh binding layer (400); the bottom of the first steel mesh binding layer (400) is provided with a first polyethylene original film layer (410), a first geotextile layer (420), a second polyethylene original film layer (430), a second geotextile layer (440), and a crushed stone cushion layer (450) in sequence from top to bottom; the top of the first steel mesh binding layer (400) is provided with a plurality of fiber reinforced concrete layers (460), a second steel mesh binding layer (470), and a surface layer (480) in sequence from bottom to top.

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