Bottom pouring formwork and anti-boss construction method at joint of fabricated building laminated slabs

Abstract

According to the bottom pouring formwork at the joint of the fabricated building laminated slabs, the structural strength of the joint of the laminated slabs is enhanced through fixed connection of the base plate and the bottom formwork, and the cracking problem caused by infirm connection is effectively prevented. The invention further provides a boss-preventing construction method for the joint of the prefabricated building laminated slabs. According to the boss-preventing construction method, a layer of base plate is additionally arranged on the top face of a bottom formwork at the joint to be fixed to the bottom formwork, so that a groove is formed in the plane of the joint of the laminated slabs after floor concrete is poured; and ceiling plastering and decoration engineering construction can be carried out without roughening treatment on the joint of the laminated slabs, so that the construction cost is reduced, and the engineering quality is improved. By the adoption of the anti-boss construction method for the joint of the prefabricated building laminated slabs, ceiling plastering and decoration engineering construction can be carried out without roughening treatment on the joint of the laminated slabs, the construction cost is reduced, and the engineering quality is improved.

Description

Technical Field

[0001] The invention relates to the technical field of prefabricated buildings, in particular to a template structure used for bottom casting at a joint of composite panels of prefabricated buildings.

[0002] The present invention also relates to the technical field of prefabricated building construction, and specifically to a highly efficient construction method for preventing bosses at joints of composite panels of prefabricated buildings. Background Art

[0003] In prefabricated buildings, composite panels are widely used due to their fast construction speed and high efficiency. However, the joints of composite panels often produce bosses due to uneven pressure or formwork deformation during concrete pouring, which not only affects the beauty of the building, but also increases the difficulty and cost of subsequent ceiling plastering and decoration projects. Traditional methods often require roughening of the joints, which is cumbersome and inefficient.

[0004] The patent with application number CN202110644833.1 discloses a prestressed composite integral floor slab and construction method for prefabricated buildings, which solves the problem in the prior art that prefabricated floor slabs are not suitable for floor slab structures with large spans. It has the beneficial effect of solving the problems of excessive temperature stress and cracking of the floor slab caused by the excessive length of the floor slab structure. The specific scheme is as follows: A prestressed composite integral floor slab for prefabricated buildings, comprising an assembled prefabricated base plate, a concrete composite layer is cast on the upper surface of the prefabricated base plate, the prefabricated base plate, the concrete composite layer, and the cast-in-place beam are cast as a whole, the cast-in-place beam supports the prefabricated base plate and the concrete composite layer, prestressed tendons are laid in the concrete composite layer, and the laying direction of the prestressed tendons is perpendicular to the joint direction of the prefabricated base plate.

[0005] However, the above patent does not solve the problem that bosses are often generated at the joints of the composite plates due to uneven pressure or deformation of the template during concrete pouring, and cannot solve the technical problems existing in the prior art. Summary of the invention

[0006] The purpose of the present invention is to provide a bottom casting template for the joint of assembled building composite panels to solve the problems raised in the above background technology:

[0007] (1) How to improve the pad and bottom formwork structure to achieve efficient and high-quality casting at the joint of the composite slabs, significantly improving the structural strength and sealing.

[0008] The purpose of the present invention is to provide a method for constructing an anti-convex platform at the joint of a prefabricated building composite plate to solve the problems raised in the above background technology:

[0009] (1) How to improve the bottom formwork structure to form a predetermined groove at the joint of the composite panels to simplify the subsequent ceiling plastering and decoration process, reduce costs and improve the overall project quality.

[0010] To achieve the above object, the present invention provides the following technical solutions:

[0011] A bottom casting template for the joint of assembled building composite panels;

[0012] It includes a pad and a bottom template. The bottom template is fixed on the lower side of the joint of the two overlapping plates. The pad is arranged on the bottom template and is located in the joint of two adjacent overlapping plates.

[0013] Based on the above technical solution, the present invention can also be improved as follows.

[0014] Furthermore, the pad is an aluminum plate.

[0015] Furthermore, the height of the pad is 3 to 4 mm.

[0016] Furthermore, it also includes a rubber layer, which covers the outer side of the pad, and the edges on both sides of the rubber layer extend into between the bottom template and the superimposed plate respectively.

[0017] Furthermore, it also includes an adjustment component, which includes an adjustment bolt and an adjustment nut. The adjustment nut is fixedly connected to the bottom template. The adjustment bolt cooperates with the adjustment nut and the end of the adjustment bolt passes through the bottom template and rests on the lower end surface of the pad.

[0018] With this structure, the bottom formwork is fixedly connected to the lower side of the joint of the two sides of the composite board to support and position the pouring material to ensure the uniformity and stability of the pouring layer. The bottom formwork can be customized according to the size and shape of the composite board to meet different construction needs.

[0019] The pad is fixedly connected to the bottom formwork and is located at the junction of two adjacent superimposed plates. The pad is made of aluminum plate, which is suitable as the supporting structure of the formwork due to its light weight, high strength and corrosion resistance. The height of the pad is set to 3-4mm to reduce material consumption and construction difficulty while ensuring structural strength.

[0020] The rubber layer covers the outside of the pad and is used as a sealing layer. The rubber layer has good elasticity and sealing properties, which can effectively prevent the slurry from leaking during the pouring process and ensure the sealing effect of the joint. The edges on both sides of the rubber layer extend between the bottom formwork and the superimposed plate to form a tightly fitting sealing structure.

[0021] The beneficial technical effects of the bottom casting formwork at the joint of the prefabricated building composite slab are:

[0022] (1) Improve structural strength: The fixed connection between the pad and the bottom formwork enhances the structural strength of the composite plate joint, effectively preventing cracking caused by loose connection.

[0023] (2) Improved sealing: The addition of the rubber layer significantly improves the sealing of the joints, effectively preventing problems such as water seepage and ensuring the overall quality of the building.

[0024] (3) Improve construction efficiency: The use of prefabricated formwork structure simplifies the construction process, shortens the construction period, and improves construction efficiency.

[0025] (4) Reduce costs: The base plate is made of aluminum plate, which not only ensures structural strength but also reduces material costs. At the same time, due to the improvement of construction efficiency, it also indirectly reduces labor and time costs.

[0026] To achieve the above object, the present invention also provides the following technical solutions:

[0027] A method for constructing an anti-convex platform at a joint of a composite slab of an assembled building, comprising the following steps:

[0028] a) Positioning and measurement:

[0029] On the top surface of the bottom formwork where the composite plates meet, accurately measure and locate the installation position of the pad according to the design requirements;

[0030] b) Pad laying:

[0031] Lay the prepared pad on the top surface of the bottom template according to the measured position, ensuring that the pad fits tightly with the bottom template without any gap;

[0032] c) Pad fixing:

[0033] Use self-tapping screws or adhesive to firmly fix the pad on the bottom template. If self-tapping screws are used, ensure that the pad is firmly installed. After the pad is fixed, it is an integrated structure with the bottom template and is not easy to loosen. If adhesive is used, ensure that the adhesive is evenly applied and firmly adhered.

[0034] d) Bottom template inspection:

[0035] Before pouring concrete, check the fixation of the bottom formwork and pad again to ensure there is no looseness or deformation;

[0036] e) Concrete pouring:

[0037] Carry out the work according to the normal concrete pouring process, and pay attention to controlling the pouring speed and vibration intensity to avoid impact on the pad;

[0038] f) Mould removal and plate recovery:

[0039] After the concrete solidifies and reaches the specified strength, remove the bottom formwork and pad. After the pad is removed, the groove formed at the joint of the superimposed plates should be properly preserved for next use;

[0040] g) Groove inspection:

[0041] Check whether the size and depth of the grooves formed at the joints of the composite boards meet the design requirements. There is no need to roughen the joints of the composite boards, and subsequent construction steps such as ceiling plastering and decorative painting can be carried out directly.

[0042] Based on the above technical solution, the present invention can also be improved as follows.

[0043] Furthermore, the thickness of the pad is 4 mm.

[0044] The beneficial effects of the anti-convex platform construction method at the joint of the assembled building composite plate are:

[0045] (1) Reduce costs: The traditional roughening process is omitted, which reduces manpower and material consumption and significantly reduces construction costs.

[0046] (2) Improve quality: The naturally formed grooves are conducive to the adhesion of the ceiling plaster layer, reducing quality problems such as hollowing and cracking, and improving the overall project quality.

[0047] (3) Simplify the process: Simplify the construction process, speed up the construction progress, and improve the construction efficiency.

[0048] (4) Environmentally friendly and recyclable: Aluminum plate materials can be recycled, which is in line with the concept of green building and reduces resource waste.

[0049] (5) Strong adaptability: This method is suitable for the construction of various types of prefabricated building composite panels and has broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 It is a structural schematic diagram of a first embodiment of a bottom casting template at a joint of a composite slab of an assembled building.

[0051] Figure 2 It is a structural schematic diagram of a second embodiment of the bottom casting formwork at the joint of the composite slab of the prefabricated building.

[0052] Figure 3 yes Figure 2 Enlarged view of part A.

[0053] Description of the numbers in the figure:

[0054] Composite plate - 100; bottom formwork - 200; aluminum plate - 300; concrete - 400; rubber layer - 500; adjusting bolt - 610; adjusting nut - 620. DETAILED DESCRIPTION

[0055] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific implementation disclosed below.

[0056] The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementations.

[0057] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0058] Embodiment 1

[0059] See also Figure 1 shown.

[0060] The bottom casting formwork at the joint of the assembled building composite slab comprises a pad and a bottom formwork.

[0061] The bottom template is fixed on the lower side of the joint of the two overlapping plates, and the pad is arranged on the bottom template, and the pad is located in the joint of two adjacent overlapping plates. The pad is an aluminum plate, and the height of the pad is 3-4 mm.

[0062] The method for constructing an anti-convex platform at the joint of the composite slab of an assembled building comprises the following steps:

[0063] 1. Construction Preparation

[0064] Materials preparation:

[0065] Pad: The pad is made of 4mm thick aluminum plate 300 to ensure that the surface of the aluminum plate 300 is flat, without deformation and accurate in size.

[0066] Special self-tapping screws: Select the appropriate fixing method according to the material of the bottom template 200 and site conditions.

[0067] Other conventional construction materials: such as bottom formwork 200, concrete 400 pouring materials, etc.

[0068] Tool preparation:

[0069] Measuring tools: such as tape measures, levels, etc., for precise measurement and positioning.

[0070] Installation tools: such as screwdrivers, wrenches, etc., used to fix the aluminum plate 300 and the bottom template 200.

[0071] On-site investigation:

[0072] Investigate the joints of the composite slabs 100 to determine the construction scope and specific location. Check the flatness and stability of the bottom template 200 to ensure that it meets the construction requirements.

[0073] 2. Bottom template transformation

[0074] Positioning and measurement:

[0075] On the top surface of the bottom template 200 where the laminated plates 100 are joined, the installation position of the aluminum plate 300 is accurately measured and located according to the design requirements.

[0076] Aluminum plate 300 laying:

[0077] Lay the prepared 4 mm thick aluminum plate 300 on the top surface of the bottom template 200 according to the measuring position, and ensure that the aluminum plate 300 and the bottom template 200 fit tightly without any gap.

[0078] Aluminum plate 300 fixed:

[0079] Use special self-tapping screws (or use adhesive. If adhesive is used, ensure that the adhesive is evenly applied and firmly adhered) to firmly fix the aluminum plate 300 on the bottom template 200.

[0080] 3. Concrete pouring

[0081] Bottom template inspection:

[0082] Before pouring the concrete 400, check the fixation of the bottom formwork 200 and the aluminum plate 300 again to ensure that there is no looseness or deformation.

[0083] Concrete pouring:

[0084] Carry out the operation according to the normal concrete 400 pouring process, pay attention to controlling the pouring speed and vibration intensity to avoid impact on the aluminum plate 300.

[0085] Maintenance:

[0086] After the pouring of concrete 400 is completed, maintenance shall be carried out in accordance with the specifications to ensure that concrete 400 reaches the specified strength.

[0087] 4. Subsequent processing

[0088] Demolding and recycling of aluminum plate 300:

[0089] After the concrete 400 solidifies and reaches the specified strength, remove the bottom formwork 200 and the aluminum plate 300. The aluminum plate 300 needs to be properly stored for next use.

[0090] Groove inspection:

[0091] Check whether the size and depth of the groove formed at the joint of the laminated plates 100 meet the design requirements.

[0092] Subsequent construction:

[0093] There is no need to roughen the joints of the composite panels 100, and subsequent construction steps such as ceiling plastering and decorative coating can be carried out directly.

[0094] 5. Quality Control and Acceptance

[0095] Quality Control:

[0096] During the construction process, strengthen the quality control of key links such as bottom formwork 200 modification, aluminum plate 300 fixation, and concrete 400 pouring to ensure that the construction quality meets the design requirements.

[0097] acceptance:

[0098] After the construction is completed, relevant personnel are organized to conduct acceptance inspection to check whether the groove size, depth and subsequent construction quality meet the specification requirements.

[0099] Through the above step-by-step construction introduction, the smooth implementation of the anti-boss construction method at the joint of the prefabricated building composite panel 100 can be ensured, and the expected construction effect can be achieved.

[0100] Embodiment 2

[0101] See also Figures 2 to 3 shown.

[0102] The only difference between this embodiment and the first embodiment is that the bottom casting formwork at the joint of the composite slab of the prefabricated building also includes a rubber layer 500 and an adjustment component.

[0103] The rubber layer 500 covers the outside of the thick aluminum plate 300 (backing plate), and the edges on both sides of the rubber layer 500 extend into between the bottom template 200 and the composite plate 100 respectively.

[0104] The adjustment assembly includes an adjustment bolt 610 and an adjustment nut 620. The adjustment nut 620 is fixedly connected to the bottom template 200. The adjustment bolt 610 cooperates with the adjustment nut 620 and the end of the adjustment bolt 610 passes through the bottom template 200 and rests on the lower end surface of the thick aluminum plate 300 (pad).

[0105] The method of use of this embodiment is consistent with that of the first embodiment, and can also achieve similar technical effects. In addition, this embodiment can adjust the position of the thick aluminum plate 300 (pad) by adjusting the component, thereby adjusting the depth of the groove.

[0106] The above are only two embodiments of the present invention. It should be pointed out that a person skilled in the art can make several modifications and improvements without departing from the principle of the present invention, and these should also be regarded as falling within the scope of protection of the present invention.

Claims

1. A bottom casting formwork for the joint of assembled building composite panels, characterized by: It comprises a pad and a bottom template (200), wherein the bottom template (200) is fixed to the lower side of the joint of the two side superimposed plates (100), and the pad is arranged on the bottom template (200), and is located in the joint of two adjacent superimposed plates (100).

2. The bottom casting formwork for the joint of the assembled building composite slab according to claim 1 is characterized by: The backing plate is an aluminum plate (300).

3. The bottom casting formwork for the joint of the assembled building composite slab according to claim 2 is characterized by: The height of the pad is 3-4 mm.

4. The bottom casting formwork for the joint of the assembled building composite slab according to claim 1 is characterized by: It also includes a rubber layer (500), which covers the outer side of the pad, and the edges on both sides of the rubber layer (500) extend between the bottom template (200) and the composite plate (100).

5. The bottom casting formwork for the joint of the assembled building composite slab according to claim 4 is characterized by: The invention also comprises an adjustment assembly, which comprises an adjustment bolt (610) and an adjustment nut (620). The adjustment nut (620) is fixedly connected to the bottom template (200). The adjustment bolt (610) cooperates with the adjustment nut (620), and the end of the adjustment bolt (610) passes through the bottom template (200) and then abuts against the lower end surface of the pad.

6. A method for completing the anti-convex platform construction using the bottom casting template at the joint of the assembled building composite slab as described in claims 1 to 5, comprising the following steps: a) Positioning and measurement: On the top surface of the bottom template (200) at the joint of the laminated plates (100), the installation position of the pad is accurately measured and located according to the design requirements; b) Pad laying: Lay the prepared pad on the top surface of the bottom template (200) according to the measured position, ensuring that the pad fits tightly with the bottom template (200) without any gap; c) Pad fixing: Use self-tapping screws or adhesive to firmly fix the pad on the bottom template (200); if self-tapping screws are used for fixing, it is necessary to ensure that the pad is firmly installed and the pad is an integrated structure with the template after fixing, and is not easy to loosen; if adhesive is used, it is necessary to ensure that the adhesive is evenly applied and firmly adhered; d) Bottom template (200) inspection: Before pouring concrete (400), check the fixation of the bottom formwork (200) and the pad again to ensure that there is no looseness or deformation; e) Concrete (400) pouring: Carry out the operation according to the normal concrete (400) pouring process, pay attention to controlling the pouring speed and vibration intensity to avoid impact on the pad; f) Mould removal and plate recovery: After the concrete (400) solidifies and reaches a specified strength, the bottom template (200) and the pad are removed; the groove formed at the joint of the composite plate (100) after the pad is removed needs to be properly preserved for next use; g) Groove inspection: Check whether the size and depth of the groove formed at the joint of the composite board (100) meet the design requirements, and the subsequent construction steps such as ceiling plastering and decorative coating can be directly carried out without roughening the joint of the composite board (100).

7. The method for constructing an anti-convex platform at the joint of the composite slab of an assembled building according to claim 5 is characterized by: The depth of the groove is about 4 mm, and subsequent ceiling plastering and decoration construction can be directly carried out without roughening the joints of the composite panels (100).

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