A leakproof slurry laminated board and construction method thereof

Abstract

This invention discloses a mortar-proof composite slab and its construction method. The slab includes a composite slab body with multiple reinforcing openings on one side, the inner walls of which are fixedly connected to first reinforcing bars. Multiple connecting bars, each in an inverted V-shape, are provided on the top of the composite slab body. Second reinforcing bars are welded between these connecting bars. A first groove is provided on one side of the bottom of the composite slab body, and a second groove is provided on one side of the top of the composite slab body, with the first and second grooves fitting together. A pull-out groove is provided on one side of the composite slab body, and a sealing mechanism is provided inside the pull-out groove. This invention effectively improves the sealing performance of the composite slab during splicing through the cooperation between the sealing mechanism and the plugging mechanism, preventing concrete mortar leakage from the splice joints and thus avoiding any impact on the construction of the composite slab.

Description

Technical Field

[0001] This invention relates to the field of composite slabs, and more particularly to a grout-proof composite slab and its construction method. Background Technology

[0002] Composite slabs are assembled monolithic floor slabs made by stacking precast slabs and cast-in-place reinforced concrete layers. Composite slabs have good integrity, and the upper and lower surfaces of the slabs are flat, which facilitates the finishing layer decoration. They are suitable for high-rise buildings and large-span buildings with high requirements for overall rigidity.

[0003] A search revealed Chinese patent application CN110792221A, which discloses a precast composite slab for preventing grout leakage and its construction method. The slab includes a square composite slab body with horizontally crisscrossing reinforcing bars. These bars extend outwards along the end faces of the composite slab body. An inverted V-shaped connecting reinforcing bar is located on the top surface of the composite slab body, with the tip of the connecting reinforcing bar protruding from the top surface. The reinforcing bars near the splicing ends of the composite slab body extend outwards and then bend towards the top surface of the composite slab body. This precast composite slab for preventing grout leakage is less likely to leak during the casting of reinforced concrete layers.

[0004] When splicing existing composite slabs, a waterproofing pad is usually placed at the joint between two composite slabs to prevent grout leakage. However, the effect of using only a single waterproofing pad to prevent concrete grout leakage is limited, which affects the splicing of the composite slabs. Summary of the Invention

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A leak-proof composite slab includes a composite slab body. Multiple reinforcing openings are provided on one side of the composite slab body, and a first reinforcing bar is fixedly connected to the inner wall of each reinforcing opening. Multiple connecting ribs, shaped like inverted V, are provided on the top of the composite slab body. Second reinforcing bars are welded between the multiple connecting ribs. A first groove is provided on one side of the bottom of the composite slab body, and a second groove is provided on one side of the top of the composite slab body, with the first and second grooves being compatible. A pull-out groove is provided on one side of the composite slab body, and a sealing mechanism is provided inside the pull-out groove. Positioning grooves are provided at both ends of the outer wall of one side of the composite slab body, and a receiving groove is provided on one inner wall of each of the two positioning grooves, with a sealing mechanism provided inside each of the two receiving grooves. Positioning blocks are bolted to both sides of the top inner wall of the second groove, and the positioning blocks are compatible with the positioning groove.

[0007] Preferably, a sliding groove is provided on one side of the inner wall of the pull-out groove, and a through hole is provided between the sliding groove and the storage groove, and sliders are slidably connected to both sides of the inner wall of the sliding groove.

[0008] Preferably, the sealing mechanism includes a sealing plate, a connecting frame, and two push plates. The sealing plate is slidably connected to the pull-out groove, the connecting frame is fixedly connected to the sealing plate, and the connecting frame is rotatably connected to the two push plates via bearings. The two push plates are arranged in a V-shape, and the two push plates are connected to the two sliders via hinges. The sealing plate is made of an elastic material, and a first spring is bolted to the sealing plate and the pull-out groove. A piston plate is slidably connected to the inner wall of the through hole, and a push rod is bolted to one side of the piston plate. One end of the push rod is hinged to the slider.

[0009] Preferably, guide grooves are provided on the inner walls of the opposite sides of the pull-out groove, and guide blocks are slidably connected to the inner walls of the two guide grooves. The guide blocks are connected to the sealing plate by bolts.

[0010] Preferably, the sealing mechanism consists of an insert block and four second springs, and the two ends of the four second springs are respectively connected to the insert block and the receiving groove by bolts.

[0011] Preferably, each of the two positioning blocks has a slot on one side of its outer wall, and the slot is compatible with the insertion block. Both slots are equipped with a compression mechanism inside.

[0012] Preferably, the compression mechanism consists of an air bladder and a compression plate, with the compression plate slidably connected to the slot, and the air bladder located between the compression plate and the inner wall of one side of the slot.

[0013] Preferably, the bottom inner wall of the second slot is provided with a fixing groove, and the inside of the fixing groove is provided with a leak-proof mechanism. The leak-proof mechanism includes a top plate and a seepage-proof pad. The top plate is slidably connected to the fixing groove. A third spring is bolted between the bottom of the top plate and the fixing groove. The top of the top plate is bonded to the seepage-proof pad. The top of the seepage-proof pad is provided with multiple protrusions. Both the seepage-proof pad and the protrusions are made of flexible elastic material. The leak-proof mechanism is I-shaped. Air holes are provided between the fixing groove, the slot, and the airbag.

[0014] A method for constructing composite slabs to prevent grout leakage, comprising the following steps:

[0015] S1: Mark the board joint position lines on the side of the wall beam or rigid frame crossbeam according to the installation drawing, and mark the board number;

[0016] S2: When hoisting the composite slab, if there are reserved holes in the composite slab, check the position and direction of the slab before hoisting. At the same time, check the obstacles to the placement of the reinforcing bars. When hoisting, align the composite slab with the marked position line and place the composite slab on the design support. Slowly lower the composite slab into place and stabilize it.

[0017] S3: Adjust the support length at the composite slab support by gently adjusting it with a pry bar according to the support length required by the drawing;

[0018] S4: Arrange the reinforcing bars around the composite slab, ensuring that the bending angle of the reinforcing bars is not 90° and that they are not pressed under the composite slab.

[0019] The beneficial effects of this invention are as follows:

[0020] 1. This invention, through its sealing and blocking mechanisms, ensures that when splicing the composite plates, the first groove of the first composite plate coincides with the second groove of the second composite plate. The cooperation between the positioning block and the positioning groove allows the two composite plates to be neatly spliced ​​together. During splicing, the sealing plate moves into the pull-out groove under the action of the composite plates. At this time, the sealing plate presses against the two push plates, which then unfold to both sides under pressure. The two push plates push the slider to one side, and the push rod drives the piston plate to move forward under the action of the slider. As one side of the through hole slides, the air pressure inside the receiving groove increases with the movement of the piston plate. The insert block extends into the receiving groove under the action of the second spring and is inserted into the slot. Thus, the cooperation between the sealing mechanism and the plugging mechanism can effectively improve the sealing performance of the composite plate splicing, preventing concrete mortar from leaking from the splice of the composite plate, which would affect the construction of the composite plate. In addition, since the sealing plate is made of elastic material, it will stick tightly to one side of the composite plate under the action of the first spring, thereby further improving the sealing effect when the composite plate is spliced.

[0021] 2. This invention, through its sealing mechanism, compression mechanism, and leak-proof mechanism, ensures that when the insert block is inserted into the slot, it compresses the extrusion plate. Under pressure, the extrusion plate slides to one side, compressing the airbag. The compressed gas inside the airbag is then transported through the air vent to the fixed groove. The air pressure inside the fixed groove increases due to the gas input, causing the top plate to rise upwards, thus tightly adhering the leak-proof pad to the joint of the two composite plates. Because the leak-proof pad is made of flexible elastic material, it adheres tightly to the joint of the two composite plates under pressure, thereby improving the leak-proof effect of the composite plates. Since the leak-proof mechanism is I-shaped, the cooperation between the transverse and longitudinal leak-proof pads effectively improves the leak-proof effect of the composite plates. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a grout-proof composite plate proposed in this invention;

[0023] Figure 2 This is a schematic diagram of the main structure of a grout-proof composite slab proposed in this invention;

[0024] Figure 3This is a cross-sectional structural diagram of a composite slab for preventing grout leakage proposed in this invention.

[0025] Figure 4 This is a schematic diagram of the sealing mechanism of a composite plate for preventing grout leakage, as proposed in this invention.

[0026] Figure 5 This is a schematic diagram of the sealing mechanism of a composite plate for preventing grout leakage, as proposed in this invention.

[0027] Figure 6 This is a schematic diagram of the anti-leakage mechanism of a composite slab for preventing grout leakage, as proposed in this invention.

[0028] Figure 7 This is a schematic diagram of the structure at point A of a composite slab designed to prevent grout leakage, as proposed in this invention.

[0029] Figure 8 This is a schematic flowchart of a method for constructing a composite slab to prevent grout leakage, as proposed in this invention.

[0030] In the attached diagram: 1- Composite plate body; 2- First reinforcing bar; 3- First groove; 4- Positioning groove; 5- Pull-out groove; 6- Sealing mechanism; 7- Storage groove; 8- Connecting bar; 9- Second reinforcing bar; 10- Second groove; 11- Fixing groove; 12- Leak-proof mechanism; 13- Positioning block; 14- Slot; 15- Compression mechanism; 16- Guide groove; 17- Slide groove; 18- Through hole; 19- Sealing mechanism; 20- Extrusion plate; 21- Airbag; 22- Sealing plate; 23- Guide block; 24- First spring; 25- Push rod; 26- Slider; 27- Push plate; 28- Piston plate; 29- Connecting frame; 30- Insert block; 31- Second spring; 32- Top plate; 33- Leak-proof pad; 34- Third spring; 35- Protruding ridge. Detailed Implementation

[0031] Example 1

[0032] Reference Figure 1-5A type of grout-proof composite slab includes a composite slab body 1. Multiple reinforcing openings are provided on one side of the composite slab body 1, and first reinforcing bars 2 are fixedly connected to the inner walls of the reinforcing openings. Multiple connecting bars 8 are provided on the top of the composite slab body 1, and the connecting bars 8 are in the shape of an inverted V. Second reinforcing bars 9 are welded between the multiple connecting bars 8. A first groove 3 is provided on one side of the bottom of the composite slab body 1, and a second groove 10 is provided on one side of the top of the composite slab body 1, with the first groove 3 and the second groove 10 being compatible. A pull-out groove 5 is provided on one side of the composite slab body 1, and the interior of the pull-out groove 5 is provided with... The sealing mechanism 6 has positioning grooves 4 at both ends of the outer wall of one side of the composite slab body 1, and a receiving groove 7 is provided on the inner wall of one side of each of the two positioning grooves 4. A sealing mechanism 19 is provided inside each of the two receiving grooves 7. Positioning blocks 13 are bolted to both sides of the inner wall of the top of the second groove 10, and the positioning blocks 13 are compatible with the positioning grooves 4. The cooperation between the sealing mechanism 6 and the sealing mechanism 19 can effectively improve the sealing performance of the composite slab body 1 during splicing, and prevent concrete mortar from leaking from the splice of the composite slab body 1, thereby affecting the construction of the composite slab body 1.

[0033] Based on the above, a sliding groove 17 is provided on one side of the inner wall of the pull-out groove 5, and a through hole 18 is provided between the sliding groove 17 and the storage groove 7. Sliding blocks 26 are slidably connected to both sides of the inner wall of the sliding groove 17.

[0034] Based on the above, the sealing mechanism 6 includes a sealing plate 22, a connecting frame 29, and two push plates 27. The sealing plate 22 is slidably connected to the pull-out groove 5, the connecting frame 29 is fixedly connected to the sealing plate 22, and the connecting frame 29 is rotatably connected to the two push plates 27 through bearings. The two push plates 27 are arranged in a V-shape. The two push plates 27 are connected to the two sliders 26 through hinges. The sealing plate 22 is made of elastic material. A first spring 24 is bolted to the sealing plate 22 and the pull-out groove 5. A piston plate 28 is slidably connected to the inner wall of the through hole 18. A push rod 25 is bolted to one side of the piston plate 28. One end of the push rod 25 is hinged to the slider 26.

[0035] Based on the above, guide grooves 16 are provided on the inner walls of opposite sides of the pull-out groove 5, and guide blocks 23 are slidably connected to the inner walls of the two guide grooves 16. The guide blocks 23 are connected to the sealing plate 22 by bolts.

[0036] Based on the above, the sealing mechanism 19 consists of an insert block 30 and four second springs 31, and the two ends of the four second springs 31 are respectively connected to the insert block 30 and the receiving groove 7 by bolts.

[0037] Based on the above, slots 14 are provided on one outer wall of each of the two positioning blocks 13, and the slots 14 are compatible with the insert blocks 30. Compression mechanisms 15 are provided inside each of the two slots 14. When splicing the composite plate bodies 1, the first slot 3 of the first composite plate body 1 is aligned with the second slot 10 of the second composite plate body 1. Through the cooperation between the positioning blocks 13 and the positioning slots 4, the two composite plate bodies 1 can be neatly spliced ​​together. When the two composite plate bodies 1 are spliced, the sealing plate 22 moves into the pull-out groove 5 under the action of the composite plate bodies 1. At this time, the sealing plate 22 will press against the two push plates 27, and the two push plates 27 will unfold to both sides under pressure. The two push plates 27 will push the slider 26 to one side. Sliding, the push rod 25 will drive the piston plate 28 to slide towards one side of the through hole 18 under the action of the slider 26. At this time, the air pressure inside the receiving groove 7 will increase with the movement of the piston plate 28, and the insert block 30 will extend into the receiving groove 7 under the action of the second spring 31 and be inserted into the slot 14. Thus, the cooperation between the sealing mechanism 6 and the sealing mechanism 19 can effectively improve the sealing performance of the composite plate body 1 during splicing, and prevent concrete mortar from leaking from the splice of the composite plate body 1, thereby affecting the construction of the composite plate body 1. In addition, since the sealing plate 22 is made of elastic material, the sealing plate 22 will be tightly attached to one side of the composite plate body 1 under the action of the first spring 24, thereby further improving the sealing effect of the composite plate body 1 during splicing.

[0038] refer to Figure 8 A method for constructing composite slabs to prevent grout leakage, the specific steps of which are as follows:

[0039] S1: Mark the board joint position lines on the side of the wall beam or rigid frame crossbeam according to the installation drawing, and mark the board number;

[0040] S2: When hoisting the composite slab, if there are reserved holes in the composite slab, check the position and direction of the slab before hoisting. At the same time, check the obstacles to the placement of the reinforcing bars. When hoisting, align the composite slab with the marked position line and place the composite slab on the design support. Slowly lower the composite slab into place and stabilize it.

[0041] S3: Adjust the support length at the composite slab support by gently adjusting it with a pry bar according to the support length required by the drawing;

[0042] S4: Arrange the reinforcing bars around the composite slab, ensuring that the bending angle of the reinforcing bars is not 90° and that they are not pressed under the composite slab.

[0043] Example 2

[0044] Reference Figure 1-7A type of anti-leakage composite plate, compared with Embodiment 1, based on Embodiment 1, the compression mechanism 15 is composed of an air bladder 21 and an extrusion plate 20, and the extrusion plate 20 is slidably connected to the slot 14, and the air bladder 21 is located between the extrusion plate 20 and the inner wall of one side of the slot 14.

[0045] Based on the above, a fixing groove 11 is provided on the bottom inner wall of the second slot 10, and a leak-proof mechanism 12 is provided inside the fixing groove 11. The leak-proof mechanism 12 includes a top plate 32 and a seepage-proof pad 33. The top plate 32 is slidably connected to the fixing groove 11. A third spring 34 is bolted between the bottom of the top plate 32 and the fixing groove 11. The top of the top plate 32 is bonded to the seepage-proof pad 33. The top of the seepage-proof pad 33 is provided with multiple protrusions 35. Both the seepage-proof pad 33 and the protrusions 35 are made of flexible elastic material. The leak-proof mechanism 12 is I-shaped. Air holes are provided between the fixing groove 11, the slot 14, and the airbag 21. When the insert 30 is inserted into the slot 14, the insert 30 will squeeze the extrusion plate 20. At this time, the extrusion plate 20 is under pressure. Under the action of the pressure plate 20, the airbag 21 is compressed. The gas inside the airbag 21 is compressed and then transported to the inside of the fixing groove 11 through the air hole. At this time, the air pressure inside the fixing groove 11 will increase due to the input of gas. The top plate 32 will be pushed upward under the action of air pressure, so that the anti-seepage pad 33 is tightly attached to the splice of the two composite plate bodies 1. Since the anti-seepage pad 33 is made of flexible elastic material, it will be tightly attached to the splice of the two composite plate bodies 1 under the action of pressure, thereby improving the anti-leakage effect of the composite plate body 1. Since the anti-leakage mechanism 12 is I-shaped, the anti-leakage effect of the composite plate body 1 can be effectively improved by the cooperation between the transverse and longitudinal anti-seepage pads 33.

[0046] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A grout-proof composite slab, comprising a composite slab body (1), wherein a plurality of reinforcing openings are provided on one side of the composite slab body (1), and a first reinforcing bar (2) is fixedly connected to the inner wall of the reinforcing opening; a plurality of connecting bars (8) are provided on the top of the composite slab body (1), and the shape of the connecting bars (8) is inverted V-shaped; a second reinforcing bar (9) is welded between the plurality of connecting bars (8); a first groove (3) is provided on one side of the bottom of the composite slab body (1); a second groove (10) is provided on one side of the top of the composite slab body (1), and the first groove (3) and the second groove (10) are adapted to each other, characterized in that, A pull-out groove (5) is provided on one side of the composite plate body (1), and a sealing mechanism (6) is provided inside the pull-out groove (5). A positioning groove (4) is provided at both ends of the outer wall of one side of the composite plate body (1), and a storage groove (7) is provided on one side of the inner wall of the two positioning grooves (4). A sealing mechanism (19) is provided inside the two storage grooves (7). A positioning block (13) is bolted to both sides of the inner wall of the top of the second slot (10), and the positioning block (13) is compatible with the positioning groove (4). A sliding groove (17) is provided on one side of the inner wall of the pull-out groove (5), and a through hole (18) is provided between the sliding groove (17) and the storage groove (7). Sliding blocks (26) are slidably connected to both sides of the inner wall of the sliding groove (17). The sealing mechanism (6) includes a sealing plate (22), a connecting frame (29) and two push plates (27). The sealing plate (22) is slidably connected to the pull-out groove (5), the connecting frame (29) is fixedly connected to the sealing plate (22), and the connecting frame (29) is rotatably connected to the two push plates (27) through bearings. The two push plates (27) are arranged in a figure-eight shape. The two push plates (27) are connected to the two sliders (26) through hinges. The sealing plate (22) is made of elastic material. The sealing plate (22) is connected to the pull-out groove (5) by bolts with a first spring (24). The inner wall of the through hole (18) is slidably connected to a piston plate (28). One side of the piston plate (28) is connected to a push rod (25) by bolts. One end of the push rod (25) is connected to the slider (26) through a hinge. The sealing mechanism (19) consists of a plug (30) and four second springs (31), and the two ends of the four second springs (31) are respectively connected to the plug (30) and the receiving groove (7) by bolts; Each of the two positioning blocks (13) has a slot (14) on one side of its outer wall, and the slot (14) is compatible with the insert (30). Both slots (14) are equipped with a compression mechanism (15). The compression mechanism (15) consists of an airbag (21) and a compression plate (20), and the compression plate (20) is slidably connected to the slot (14). The airbag (21) is located between the inner wall of one side of the compression plate (20) and the slot (14). The bottom inner wall of the second slot (10) is provided with a fixing slot (11), and the inside of the fixing slot (11) is provided with a leak-proof mechanism (12). The leak-proof mechanism (12) includes a top plate (32) and a seepage-proof pad (33). The top plate (32) is slidably connected to the fixing slot (11). The bottom of the top plate (32) and the fixing slot (11) are connected by bolts with a third spring (34). The top of the top plate (32) is bonded to the seepage-proof pad (33). The top of the seepage-proof pad (33) is provided with multiple protrusions (35). The seepage-proof pad (33) and the protrusions (35) are both made of flexible elastic material. The leak-proof mechanism (12) is in the shape of an I-beam. Air holes are provided between the fixing slot (11), the slot (14), and the airbag (21).

2. The composite slab for preventing grout leakage according to claim 1, characterized in that, The inner walls of the pull-out groove (5) on both sides are provided with guide grooves (16), and the inner walls of the two guide grooves (16) are slidably connected with guide blocks (23). The guide blocks (23) are connected to the sealing plate (22) by bolts.

3. A method for constructing composite slabs to prevent grout leakage, characterized in that, The construction method of the composite slab for preventing grout leakage according to any one of claims 1-2 includes the following specific steps: S1: Mark the board joint position lines on the side of the wall beam or rigid frame crossbeam according to the installation drawing, and mark the board number; S2: When hoisting the composite slab, if there are reserved holes in the composite slab, check the position and direction of the slab before hoisting. At the same time, check the obstacles to the placement of the reinforcing bars. When hoisting, align the composite slab with the marked position line and place the composite slab on the design support. Slowly lower the composite slab into place and stabilize it. S3: Adjust the support length at the composite slab support by gently adjusting it with a pry bar according to the support length required by the drawing; S4: Arrange the reinforcing bars around the composite slab, ensuring that the bending angle of the reinforcing bars is not 90° and that they are not pressed under the composite slab.

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