A kind of building outer wall with assembly type formwork plate

Abstract

This invention discloses a prefabricated formwork panel for building exterior walls, comprising two concrete formwork panels 1, several connecting steel members 2, an insulation board 6, and a wire mesh 7. The top surface of the concrete formwork panel 1 has an isosceles trapezoidal protrusion 4, and the bottom surface has an isosceles trapezoidal groove 5, within which a reinforcing steel mesh 3 is installed. The reinforcing steel mesh 3 is composed of several transverse thick steel bars 30, several vertical thick steel bars 31, several transverse thin steel bars 32, and several vertical thin steel bars 33. The wire mesh 7 is composed of several transverse steel wires 70, several vertical steel wires 71, and several fixing steel plates 72. The two parallel concrete formwork panels 1 are located at both ends of the connecting steel members 2 and are perpendicular to each other. A wire mesh 7 is inserted into one large opening of the insulation board 6, and the other large opening is bonded to the concrete formwork panel 1. The insulation board 6 and the wire mesh 7 inserted therein are located between the two concrete formwork panels 1.

Description

Technical Field

[0001] This invention relates to a prefabricated formwork panel for building exterior walls, belonging to the field of energy-saving buildings. Background Technology

[0002] The main construction method for high-rise buildings in my country is a two-step process. The first step involves the construction of the reinforced concrete shear wall structure. This requires steel or bamboo formwork to support the inner and outer reinforced concrete shear walls. Steel formwork is expensive, heavy, inconvenient to assemble and disassemble, and incurs high costs for lifting, transportation, and maintenance. Bamboo formwork can generally only be reused 4-5 times before needing to be scrapped, and its cost is also high. Adding to this the labor costs for assembling and disassembling the formwork, and the cost of sealing the connecting holes created by the formwork connectors, all of these factors significantly increase construction costs. The second step, after the reinforced concrete shear wall exterior is completed, requires external wall insulation, primarily using a "polystyrene board thin-plaster external wall insulation system." This type of insulation system has revealed numerous problems in my country, mainly including: exterior wall cracking, insulation layer detachment, poor insulation layer durability, poor fire resistance, and a lifespan not matching that of the building. These two aspects contribute to poor building quality and high construction costs. To overcome the shortcomings of the traditional two-step construction technique for high-rise buildings, the inventors proposed to improve the above-mentioned two-step construction method of building shear wall main body and external wall insulation into a one-step construction method of building shear wall and external wall sandwich insulation. To this end, a prefabricated formwork panel for building exterior walls was designed, which realizes the integration of insulation and main wall, the integration of insulation and structure, and the same lifespan of insulation material as building.

[0003] Engineering practice has proven that a prefabricated formwork panel for building exterior walls can integrate insulation and formwork, eliminating the need for disassembly, maintenance, secondary external insulation, plastering, and fireproofing. This accelerates construction progress, significantly reduces construction costs, improves construction efficiency, and ensures building quality. It achieves integration of insulation and structure, with the insulation material having the same lifespan as the building. The main structure and exterior wall insulation are constructed in one step, achieving the building energy saving target of 75%. It meets the sandwich insulation requirements stipulated in the new version of the "Code for Fire Protection Design of Buildings" GB 50016-2014 and has extremely broad market prospects.

[0004] This invention aims to improve the current two-step construction method of building structure and external insulation into a one-step construction method of building structure and external wall sandwich insulation, so as to shorten the construction cycle, reduce construction costs and improve construction quality. Summary of the Invention

[0005] The purpose of this invention is to overcome the technical defects of the traditional two-step construction method for high-rise buildings and to provide a prefabricated formwork panel for building exterior walls to realize the one-step construction of shear wall main body and sandwich insulation in high-rise buildings.

[0006] The technical solution of this invention is implemented as follows: a prefabricated formwork panel for building exterior walls, comprising two concrete formwork panels 1, several connecting steel members 2, insulation board 6, and wire mesh 7; the top surface of the concrete formwork panel 1 is provided with an isosceles trapezoidal protrusion 4, and the bottom surface is provided with an isosceles trapezoidal groove 5, which contains a steel reinforcement mesh 3; the steel reinforcement mesh 3 is composed of several transverse thick steel bars 30, several vertical thick steel bars 31, several transverse thin steel bars 32, and several vertical thin steel bars 33; the wire mesh 7 is composed of several transverse steel wires 70, several vertical steel wires 71, and several fixing steel plates 72;

[0007] The two concrete formwork plates 1 are parallel to each other and located at both ends of the connecting steel members 2. The connecting steel members 2 are perpendicular to the concrete formwork plates 1 at both ends and are welded to the steel reinforcement mesh 3 inside them.

[0008] In the steel reinforcement mesh 3, several transverse thick steel bars 30 are of the same length as the concrete formwork plate 1 and are evenly arranged in parallel to each other. Several vertical thick steel bars 31 are evenly arranged and perpendicular to the transverse thick steel bars 30, and are welded together. Several transverse thin steel bars 32 and several vertical thin steel bars 33 are evenly arranged, perpendicular to each other, and welded together, and are located on one side of the transverse thick steel bars 30 and the vertical thick steel bars 31, forming a rigid skeleton.

[0009] The length of several horizontal steel wires 70 of the wire mesh 7 is less than the length of the insulation board 6, and the length of several vertical steel wires 71 is less than the width of the insulation board 6. The several horizontal steel wires 70 and the vertical steel wires 71 are perpendicular to each other and welded together. Several fixing steel plates 72 with two fixing holes 73 are evenly welded onto the wire mesh 7.

[0010] The size of the large surface of the insulation board (6) is exactly the same as the size of the large surface of the concrete formwork board (1). The wire mesh 7 is inserted on one of its large surfaces, and the other large surface is bonded to the concrete formwork board 1. The insulation board 6 and the wire mesh 7 inserted thereon are located between the two concrete formwork boards 1.

[0011] The connecting steel parts 2 are all perpendicular to the insulation board 6 and the wire mesh 7, and pass through the fixing holes 73 of the wire mesh 7. The insulation board 6 is welded to the steel reinforcement mesh 3 inside the concrete formwork plate 1.

[0012] The steel reinforcement mesh 3 and steel wire mesh 7 of the prefabricated formwork panel for building exterior walls need to be treated with anti-corrosion measures. Attached image description:

[0013] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0014] Figure 2 This is a front view schematic diagram of the present invention;

[0015] Figure 3 This is a top view of the present invention;

[0016] Figure 4 This is a schematic diagram of the left-side AA cross-section of the present invention;

[0017] Figure 5 This is a front view schematic diagram of the steel reinforcement mesh 3 of the present invention;

[0018] Figure 6 This is a front view schematic diagram of the wire mesh 7 of the present invention;

[0019] Figure 7 This is a top view schematic diagram of the prefabricated installation method at the construction site of the present invention;

[0020] Figure 8 This is a top view of the on-site prefabricated installation and subsequent casting of reinforced concrete shear walls according to the present invention.

[0021] In the diagram: 1 represents the concrete formwork slab.

[0022] 2 is the connecting steel component

[0023] 3 is a steel reinforcement mesh.

[0024] 30 is a transverse thick steel bar.

[0025] 31 is a vertical thick steel bar.

[0026] 32 is a transverse fine steel bar.

[0027] 33 is a vertical thin steel bar.

[0028] 4 is an isosceles trapezoidal boss

[0029] 5 is an isosceles trapezoidal groove

[0030] 6 is insulation board

[0031] 7 is a steel wire mesh.

[0032] 70 is a transverse steel wire

[0033] 71 is a vertical steel wire

[0034] 72 is a fixed steel plate

[0035] 73 is a fixing hole

[0036] 8 represents the structural column reinforcement.

[0037] 9 represents the shear wall reinforcement.

[0038] 10 is cast-in-place concrete. Detailed Implementation

[0039] The present invention is implemented as follows, in conjunction with the appendix. Figures 1 to 8 Further explanation:

[0040] The technical solution of this invention is implemented as follows: a prefabricated formwork panel for building exterior walls, comprising two concrete formwork panels 1, several connecting steel members 2, insulation board 6, and wire mesh 7; the top surface of the concrete formwork panel 1 is provided with an isosceles trapezoidal protrusion 4, and the bottom surface is provided with an isosceles trapezoidal groove 5, which contains a steel reinforcement mesh 3; the steel reinforcement mesh 3 is composed of several transverse thick steel bars 30, several vertical thick steel bars 31, several transverse thin steel bars 32, and several vertical thin steel bars 33; the wire mesh 7 is composed of several transverse steel wires 70, several vertical steel wires 71, and several fixing steel plates 72;

[0041] The two concrete formwork plates 1 are parallel to each other and located at both ends of the connecting steel members 2. The connecting steel members 2 are perpendicular to the concrete formwork plates 1 at both ends and are welded to the steel reinforcement mesh 3 inside them.

[0042] In the steel reinforcement mesh 3, several transverse thick steel bars 30 are of the same length as the concrete formwork plate 1 and are evenly arranged in parallel to each other. Several vertical thick steel bars 31 are evenly arranged and perpendicular to the transverse thick steel bars 30, and are welded together. Several transverse thin steel bars 32 and several vertical thin steel bars 33 are evenly arranged, perpendicular to each other, and welded together, and are located on one side of the transverse thick steel bars 30 and the vertical thick steel bars 31, forming a rigid skeleton.

[0043] The length of several horizontal steel wires 70 of the wire mesh 7 is less than the length of the insulation board 6, and the length of several vertical steel wires 71 is less than the width of the insulation board 6. The several horizontal steel wires 70 and the vertical steel wires 71 are perpendicular to each other and welded together. Several fixing steel plates 72 with two fixing holes 73 are evenly welded onto the wire mesh 7.

[0044] The size of the large surface of the insulation board (6) is exactly the same as the size of the large surface of the concrete formwork board (1). The wire mesh 7 is inserted on one of its large surfaces, and the other large surface is bonded to the concrete formwork board 1. The insulation board 6 and the wire mesh 7 inserted thereon are located between the two concrete formwork boards 1.

[0045] The connecting steel parts 2 are all perpendicular to the insulation board 6 and the wire mesh 7, and pass through the fixing holes 73 of the wire mesh 7. The insulation board 6 is welded to the steel reinforcement mesh 3 inside the concrete formwork plate 1.

[0046] The steel reinforcement mesh 3 and steel wire mesh 7 of the prefabricated formwork panel for building exterior walls need to be treated with anti-corrosion measures.

[0047] The on-site construction of this invention is achieved as follows:

[0048] 1) Clean up any remaining concrete on the ground beam and establish a level surface;

[0049] 2) Laying out lines and arranging boards;

[0050] 3) Tie the main structural column reinforcement 8 and the shear wall reinforcement 9;

[0051] 4) Install prefabricated formwork panels for interior walls using double-line mounting;

[0052] 5) After installing the prefabricated formwork panels for the first layer of interior walls, it is necessary to check the dimensional error to ensure that the dimensions of the formwork panels meet the dimensional accuracy of the cast-in-place reinforced concrete wall. Then, assemble the prefabricated formwork panels for the second layer of interior walls, and continue assembling until one floor is reached.

[0053] 6) Check whether the joints of the prefabricated formwork are sealed tightly to prevent cement slurry from leaking out, and then pour the mixed cast-in-place concrete 10 on site and compact it.

[0054] 7) Without disassembling the formwork and plastering the interior and exterior walls, proceed directly to the next process cycle.

[0055] The beneficial effects of this invention are:

[0056] 1) Several prefabricated formwork panels for building exterior walls. The prefabricated formwork constitutes an extremely stable rigid overall structure, which improves the traditional two-step construction technology of high-rise buildings into a one-step construction method, thereby improving construction efficiency and reducing construction labor intensity.

[0057] 2) A prefabricated formwork panel product for building exterior walls is manufactured in a factory, and standardized prefabricated construction is carried out on site. It has a fast construction speed, high construction quality, does not pollute the environment, reduces construction costs, and improves the quality of energy-saving buildings.

[0058] 3) A prefabricated formwork panel for building exterior walls, which eliminates the need to dismantle the formwork again after construction, thus avoiding the procedures and costs of dismantling the formwork again, sealing the connection holes, and plastering the interior and exterior walls, and shortening the construction cycle.

[0059] 4) The application of prefabricated formwork panels for building exterior walls enables one-step construction technology, resulting in cast-in-place concrete sandwich insulated walls. This significantly improves the building's thermal insulation and heat insulation standards, meeting the requirements of the new version of the "Code for Fire Protection Design of Buildings" GB 50016-2014. Compared with existing external wall insulation, it greatly improves the thermal insulation, heat insulation, and fireproofing effects, reducing the building's operating costs in terms of energy conservation, thermal insulation, and fireproofing. It possesses multiple functions including thermal insulation, heat insulation, and fireproofing, is integrated with the building structure, and the insulation material has the same lifespan as the building.

Claims

1. A fabricated formwork panel for use in the construction of an external wall of a building, characterised in that: It is composed of two concrete formwork plates (1), several connecting steel parts (2), insulation board (6), and wire mesh (7); the top surface of the concrete formwork plate (1) is provided with an isosceles trapezoidal boss (4), and the bottom surface is provided with an isosceles trapezoidal groove (5), which is provided with a steel reinforcement mesh (3); the steel reinforcement mesh (3) is composed of several transverse thick steel bars (30), several vertical thick steel bars (31), several transverse thin steel bars (32), and several vertical thin steel bars (33); the wire mesh (7) is composed of several transverse steel wires (70), several vertical steel wires (71), and several fixed steel plates (72); The two concrete formwork plates (1) are parallel to each other and located at both ends of the connecting steel members (2). The connecting steel members (2) are perpendicular to the concrete formwork plates (1) at both ends and are welded to the steel reinforcement mesh (3) inside them. The steel reinforcement mesh (3) has several transverse thick steel bars (30) of the same length as the concrete formwork plate (1) and is evenly arranged in parallel to each other. Several vertical thick steel bars (31) are evenly arranged and perpendicular to the transverse thick steel bars (30) and welded together. Several transverse thin steel bars (32) and several vertical thin steel bars (33) are evenly arranged, perpendicular to each other and welded together, and welded to one side of the transverse thick steel bars (30) and the vertical thick steel bars (31) to form a rigid skeleton. The length of several horizontal steel wires (70) of the wire mesh (7) is less than the length of the insulation board (6), the length of several vertical steel wires (71) is less than the width of the insulation board (6), the several horizontal steel wires (70) and the several vertical steel wires (71) are perpendicular to each other and welded together, and several fixing steel plates (72) with two fixing holes (73) are evenly welded on the wire mesh (7); The size of the large surface of the insulation board (6) is exactly the same as the size of the large surface of the concrete formwork board (1). The wire mesh (7) is inserted on one large surface, and the other large surface is bonded to the concrete formwork board (1). The insulation board (6) and the wire mesh (7) inserted thereon are located between the two concrete formwork boards (1). The connecting steel parts (2) are perpendicular to the insulation board (6) and the wire mesh (7), and pass through the fixing holes (73) of the wire mesh (7). The insulation board (6) is welded to the steel reinforcement mesh (3) inside the concrete formwork plate (1).

2. The prefabricated shuttering panel for building exterior wall according to claim 1, characterized in that: The steel reinforcement mesh (3) and wire mesh (7) mentioned above need to be treated with anti-corrosion measures.

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