A tough formwork shear wall frame and its manufacturing method

Abstract

The present application discloses a tough formwork shear wall skeleton, comprising a formwork, a connector, and a wall reinforcement skeleton. The connector is formed by two complementary U-shaped components fastened back to back. The connector has a through hole for accommodating the wall reinforcement, and the two ends of the connector are respectively anchored in the formwork on both sides. The wall reinforcement skeleton is suspended and fixed between the formwork on both sides through the connector, and a cavity for cast-in-place concrete is formed between the inner surfaces of the formwork on both sides. The tough formwork shear wall skeleton can simplify the structure, and the connector can be quickly connected without welding, thereby improving the production efficiency of the formwork shear wall. The present application also discloses a method for manufacturing a tough formwork shear wall skeleton.

Description

Technical Field

[0001] The present invention belongs to the technical field of prefabricated buildings, and in particular relates to a tough formwork shear wall skeleton and a manufacturing method thereof. Background Art

[0002] As a new type of prefabricated shear wall, the concrete formwork shear wall is characterized by being disassembly-free, plaster-free, and maintenance-free. It can speed up construction progress, reduce construction costs, and improve construction efficiency. However, when traditional concrete formwork shear walls are prefabricated in the factory, their connectors are connected to the steel skeleton by welding. Due to the thin thickness and large number of connectors, the connectors are easily broken or deformed during welding, and the welding process is relatively cumbersome, resulting in low production efficiency. In addition, the formwork on both sides of the traditional formwork shear wall is not tough enough. When pouring the cast-in-place concrete layer at the construction site, the impact force of the concrete during pouring is large, and the formwork is prone to cracking or expansion during the pouring process. Therefore, how to simplify the processing process of the formwork shear wall and improve the toughness of the formwork is an urgent problem to be solved. Summary of the Invention

[0003] To solve the above problems, the present invention provides a tough formwork shear wall frame and a manufacturing method thereof, which can simplify the structure, and the connectors can be quickly connected without welding, thereby improving the production efficiency of the formwork shear wall.

[0004] The present invention provides a tough formwork shear wall frame, which includes a formwork, a connecting piece and a wall reinforcement frame. The connecting piece is formed by two complementary U-shaped components buckled together back to back. The connecting piece has a through hole for accommodating the wall reinforcement, and the two ends of the connecting piece are respectively anchored in the formwork on both sides. The wall reinforcement frame is suspended and fixed between the formwork on both sides through the connecting piece, and a cavity for cast-in-place concrete is formed between the inner surfaces of the formwork on both sides.

[0005] Preferably, in the above-mentioned tough formwork shear wall frame, the connecting part includes a first ⌚-shaped device and a second ⌚-shaped device, wherein the first ⌚-shaped device includes a first upper flange plate, a first web, a first lower flange plate, and a first groove and a protrusion on the first web, and the second ⌚-shaped device includes a second upper flange plate, a second web, a second lower flange plate, and a second groove and a recessed portion on the second web, wherein the first groove and the second groove constitute the through hole that can accommodate the wall steel bars passing through, and the protrusion is inserted into the recessed portion and snapped together to connect the first ⌚-shaped device and the second ⌚-shaped device together.

[0006] Preferably, in the above-mentioned tough formwork shear wall skeleton, the shapes of the protrusion and the recess are circular, rectangular or triangular.

[0007] Preferably, in the above-mentioned ductile formwork shear wall skeleton, the protruding part has a pointed end.

[0008] Preferably, in the above-mentioned ductile formwork shear wall skeleton, the first groove and the second groove are semicircular or rectangular.

[0009] Preferably, in the above-mentioned ductile formwork shear wall skeleton, there are two through holes on the connecting piece, and the distance between the centroids of the two through holes is equal to the distance between the centroids of the outermost distributed steel bars of the wall steel bar skeleton. Among them, the distance between the upper surface of the upper through hole and the upper surface of the upper flange plate is equal to the sum of the cover thickness of the wall steel bar skeleton and the thickness of the formwork, and the distance between the lower surface of the lower through hole and the lower surface of the lower flange plate is equal to the sum of the cover thickness of the wall steel bar skeleton and the thickness of the formwork.

[0010] Preferably, in the above-mentioned ductile formwork shear wall skeleton, the thickness range of the C-shaped device is 1 mm to 5 mm.

[0011] Preferably, in the above-mentioned ductile formwork shear wall skeleton, the material of the C-shaped device is stainless steel, aluminum alloy, zinc alloy or magnesium alloy.

[0012] Preferably, in the above-mentioned ductile formwork shear wall skeleton, the formwork is cast into a whole by the following materials: Portland cement: 400 parts to 850 parts; quartz sand: 450 parts to 770 parts; fly ash: 5 parts to 900 parts; water: 350 parts to 650 parts; PVA fiber: 10 parts to 30 parts; water reducing agent: 5 parts to 15 parts; granite gravel: 5 parts to 650 parts.

[0013] A manufacturing method of a ductile formwork shear wall skeleton provided by the present invention includes:

[0014] Binding the wall steel bar skeleton;

[0015] Buckling two complementary C-shaped devices back to back to form a connecting piece and fixing the wall steel bar skeleton;

[0016] Setting up the side formwork of the formwork on the formwork table and pouring the first fiber concrete, pressing one end of the connecting piece fixed to the wall steel bar skeleton into the first fiber concrete, and performing vibration curing;

[0017] Putting the cured shear wall skeleton containing one-sided ductile formwork into the reversing formwork table for reversing, setting up the side formwork of the other side formwork, pouring the second fiber concrete, pressing the other end of the connecting piece fixed to the wall steel bar skeleton into the second fiber concrete, and performing vibration curing to form a ductile formwork shear wall skeleton.

[0018] As can be seen from the above description, for the resilient formwork shear wall framework provided by the present invention, since the connecting member is formed by the back-to-back fastening of two complementary U-shaped devices, the connecting member has through holes for accommodating wall steel bars to pass through, and both ends of the connecting member are respectively anchored in the formworks on both sides. It can be seen that the connection of the connecting member is achieved by a fastening method, so the structure can be simplified, and the connecting member can be quickly connected without welding, improving the production efficiency of the formwork shear wall. The manufacturing method of the resilient formwork shear wall framework provided by the present invention has the same advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to the provided drawings.

[0020] Figure 1 It is an overall schematic diagram of an embodiment of a resilient formwork shear wall framework provided by the present invention;

[0021] Figure 2 It is a schematic diagram of the connecting member of an embodiment of a resilient formwork shear wall framework provided by the present invention;

[0022] Figure 3 It is a schematic diagram of the split state of the connecting member;

[0023] Figure 4 It is an enlarged schematic diagram of the convex part;

[0024] Figure 5 It is a schematic diagram of an embodiment of a manufacturing method of a resilient formwork shear wall framework provided by the present invention;

[0025] Figure 6 It is a physical schematic diagram of a manufacturing method of a resilient formwork shear wall framework provided by the invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The core of the present invention is to provide a resilient formwork shear wall framework and its manufacturing method, which can simplify the structure, enable the connecting member to be quickly connected without welding, and improve the production efficiency of the formwork shear wall.

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0028] An embodiment of the ductile formwork shear wall skeleton provided by the present invention is as follows Figure 1 and Figure 2 shown Figure 1 is an overall schematic diagram of an embodiment of the ductile formwork shear wall skeleton provided by the present invention Figure 2 is a schematic diagram of a connector of an embodiment of the ductile formwork shear wall skeleton provided by the present invention. This embodiment of the ductile formwork shear wall skeleton may include a formwork 1, a connector 2, and a wall steel bar skeleton 3. The wall steel bar skeleton 3 may include Figure 1 the upper layer distributed steel bars 301, the lower layer distributed steel bars 302, and the tie bars 303 shown. Among them, the wall steel bar skeleton 3 may be formed by tying or welding the upper layer distributed steel bars 301 and the lower layer distributed steel bars 302 through the tie bars 303. The upper / lower layer steel bars are formed by tying or welding horizontal distributed steel bars and vertical distributed steel bars. The connector 2 is formed by back-to-back buckling of two complementary U-shaped devices 201 and 202. The connector 2 has through holes 203 for accommodating the wall steel bars to pass through, and both ends of the connector 2 are respectively anchored in the formworks 1 on both sides. The wall steel bar skeleton 3 is suspended and fixed between the formworks 1 on both sides through the connector 2, and a cavity 4 for casting in-situ concrete is formed between the inner surfaces of the formworks 1 on both sides

[0029] It should be noted that by pouring in-situ concrete into the cavity 4 at the construction site, a ductile formwork shear wall is formed. This wall has the characteristics of being removable-free, plastering-free, maintenance-free, good ductility, simple structure, high production efficiency, and fast construction. Since this solution connects the connector to the wall steel bar skeleton by buckling, there is no need to use welding for connection, which is more convenient and has higher connection efficiency

[0030] Through the above description, it can be seen that in the above embodiment of the ductile formwork shear wall skeleton provided by the present invention, since the connector is formed by back-to-back buckling of two complementary U-shaped devices, the connector has through holes for accommodating the wall steel bars to pass through, and both ends of the connector are respectively anchored in the formworks on both sides. It can be seen that the connection of the connector is achieved by buckling, so the structure can be simplified, the connector can be quickly connected without welding, and the production efficiency of the formwork shear wall can be improved

[0031] In a specific embodiment of the above ductile formwork shear wall skeleton, continue to refer to Figure 2 and in combination with Figure 3 Figure 3 ​Schematic diagram of the split state of the connecting member. The connecting member 2 may include a first C-shaped device 201 and a second C-shaped device 202. The first C-shaped device 201 may include a first upper flange plate 2011, a first web member 2012, a first lower flange plate 2013, as well as a first groove 2014 and a protrusion 2015 on the first web member 2012. The second C-shaped device 202 may include a second upper flange plate 2021, a second web member 2022, a second lower flange plate 2023, as well as a second groove 2024 and a recess 2025 on the second web member 2022. Among them, the first groove 2014 and the second groove 2024 form a through hole 203 that can accommodate the wall reinforcement to pass through. The sizes of the protrusion 2015 and the recess 2025 are the same to ensure that they can be buckled. The protrusion 2015 is inserted into the recess 2025 and buckled together to connect the first C-shaped device 201 and the second C-shaped device 202. At this time, the first groove 2014 and the second groove 2024 on the two web members 2012 and 2022 form a through hole 203 that allows the wall reinforcement to pass through. It should be noted that the above-mentioned recess 2025 can be further preferably a through hole. Moreover, the length of the above-mentioned protrusion 2015 can be set to be longer than the depth of the through-hole-shaped recess 2025. At this time, as Figure 2 shown, after the protrusion 2015 passes through the through-hole-shaped recess 2025, a part of its length extends out from the left end, so as to ensure a more firm buckle. Further, the shapes of the protrusion 2015 and the recess 2025 can be preferably circular, rectangular or triangular, as long as the two match each other to ensure that the protrusion 2015 can be inserted into the recess 2025. Of course, other shapes can also be selected according to actual needs, and it is not limited here.

[0032] In another specific embodiment of the above-mentioned ductile formwork shear wall skeleton, refer to Figure 4 , Figure 4 As the enlarged schematic diagram of the protrusion, the above-mentioned protrusion 2015 can preferably have a pointed end 20151, which makes it more convenient to insert into the recess 2025 and further improves work efficiency. Of course, this is a preferred solution, and the shape and size of the pointed end can be adjusted adaptively according to actual needs, and the size is not limited.

[0033] In another specific embodiment of the above-mentioned ductile formwork shear wall skeleton, the first groove 2014 and the second groove 2024 can be preferably semi-circular or rectangular. When they are semi-circular, the two are combined into a circle, and the diameter of this circle is preferably larger than the diameter of the outermost layer of steel bars in the wall steel bar skeleton, which is more convenient for inserting steel bars and further improves work efficiency.

[0034] In a preferred embodiment of the above-mentioned ductile formwork shear wall skeleton, continue to refer to Figure 2The connector 2 has two upper and lower through holes 203, and the distance between the centroids of the two through holes 203 is equal to the distance between the centroids of the outermost distributed steel bars of the wall reinforcement skeleton 3. The distance between the upper surface of the upper through hole and the upper surface of the upper flange plate is equal to the sum of the protective layer thickness of the wall reinforcement skeleton and the thickness of the formwork. The distance between the lower surface of the lower through hole and the lower surface of the lower flange plate is equal to the sum of the protective layer thickness of the wall reinforcement skeleton and the thickness of the formwork. In this case, the various components can be more tightly connected, and the quality of the construction project can be better guaranteed.

[0035] In another preferred embodiment of the above-mentioned tough formwork shear wall skeleton, the thickness range of the first U-shaped device 201 and the second U-shaped device 202 can preferably be 1 mm to 5 mm, and the material of the first U-shaped device 201 and the second U-shaped device 202 can preferably be stainless steel, aluminum alloy, zinc alloy or magnesium alloy. These materials have better strength and rigidity. Therefore, it can ensure that the first U-shaped device 201 and the second U-shaped device 202 have sufficiently high strength and rigidity, thereby better ensuring that the steel bars are better fixed together and the building quality is better. Of course, this thickness and material can also be adaptively adjusted according to actual needs. For example, other types of steel besides stainless steel can be selected, which is not limited here.

[0036] In another preferred embodiment of the above-mentioned tough formwork shear wall skeleton, the formwork 1 can be preferably cast into a single piece from the following materials: Portland cement: 400 to 850 parts; quartz sand: 450 to 770 parts; fly ash: 5 to 900 parts; water: 350 to 650 parts; PVA fiber: 10 to 30 parts; water reducer: 5 to 15 parts; granite crushed stone: 5 to 650 parts. It should be noted that the PVA fiber should be selected from a variety with high tensile strength and high elastic modulus. This fiber-reinforced concrete formwork has superior flexural, tensile, and impact strength, as well as toughness. It can avoid cracking and mold expansion during cast-in-place concrete pouring at the construction site, thereby improving the efficiency and quality of building construction.

[0037] The present invention provides a method for manufacturing a tough formwork shear wall frame. Figure 5 and Figure 6 As shown, Figure 5 This is a schematic diagram of an embodiment of a method for manufacturing a tough formwork shear wall skeleton provided by the present invention. Figure 6 A schematic diagram of a manufacturing method of a tough formwork shear wall skeleton provided by the invention, the manufacturing method of the tough formwork shear wall skeleton may include the following steps:

[0038] S1: Tie up the wall reinforcement skeleton;

[0039] Specifically, the upper distribution steel bars 301 and the lower distribution steel bars 302 are tied together by the tie bars 303.

[0040] S2: Two complementary U-shaped devices are buckled back to back to form a connecting piece, and the wall steel bar skeleton is fixed.

[0041] Specifically, like Figure 6 that, the connecting piece 2 formed quickly by the buckling method passes through the steel bars, so as to fix the wall steel bar skeleton 3 at a specific position.

[0042] S3: The side formwork of the formwork shell is erected on the formwork table, and the first fiber concrete is poured. One end of the connecting piece fixed to the wall steel bar skeleton is pressed into the first fiber concrete, and vibration curing is carried out.

[0043] Specifically, as Figure 6 that, the side formwork of the formwork shell 1 is erected on the formwork table 5. After pouring the first fiber concrete, the pressing operation is carried out. After vibration curing, the connecting piece 2 can be fixed to the formwork shell 1.

[0044] S4: The cured shear wall skeleton containing one side of the ductile formwork shell is placed on the reversing formwork table for reversing. The side formwork of the formwork shell on the other side is erected, and the second fiber concrete is poured. The other end of the connecting piece fixed to the wall steel bar skeleton is pressed into the second fiber concrete, and vibration curing is carried out to form a ductile formwork shell shear wall skeleton.

[0045] Specifically, continue to refer to Figure 6 , after reversing, the already fixed formwork shell 1 is on the top. At this time, the side formwork of the fiber concrete formwork shell on the other side is erected on the formwork table 5. After pouring the second fiber concrete, the other end of the connecting piece is pressed into the second fiber concrete, and the connecting piece 2 can be fixed to the formwork shell 1 located at the lower part at this time, thus forming the entire ductile formwork shell shear wall skeleton. The above-mentioned ductile formwork shell shear wall skeleton prefabricated in the factory is transported to the construction site and hoisted to the designated position. Cast-in-place concrete is poured in the cavity, and a formwork shell shear wall structure is formed.

[0046] The above scheme will be described in detail with a specific example below:

[0047] A tough formwork shear wall comprises a formwork, a connector, a wall reinforcement skeleton and cast-in-place concrete; the formwork is cast from fiber concrete, and its formula is as follows: Portland cement: 400-850 parts; quartz sand: 450-770 parts; fly ash: 0-900 parts; water: 350-650 parts; PVA fiber: 10-30 parts; water reducer: 5-15 parts; granite gravel: 0-650 parts. The connector is characterized in that it is formed by the buckling of a complementary first ⌚-shaped component 201 and a second ⌚-shaped component 202. The first ⌚-shaped component 201 is composed of an upper flange plate, a web, a lower flange plate, and grooves and protrusions on the web, and the second ⌚-shaped component 202 is composed of an upper flange plate, a web, a lower flange plate, and grooves and through holes on the web.

[0048] In the factory, the formwork is made according to the proportion of fiber concrete. Attention should be paid to fully stirring it during the production process to prevent agglomeration. In the process of making fiber concrete, the steel cage is tied, the connectors are fastened, and the side formwork of the formwork is supported. The specific process is as follows: first, the horizontal and vertical distribution steel bars and tie bars of the wall are tied or welded to form the steel skeleton of the wall, and then several U-shaped devices are fastened to the designated positions of the wall steel skeleton, and the side formwork of the formwork is supported. After the fiber concrete is mixed, the connectors fastened to the wall steel skeleton are fastened together. The other end of the connector that is fastened to the steel frame is pressed into the freshly poured fiber concrete and vibrated for curing. After curing, the cured shear wall skeleton containing one side of the formwork is placed on the inversion formwork for inversion. At the same time, the side formwork of the other side is supported and the fiber concrete is poured. The other end of the connector that is fastened to the steel frame is pressed into the freshly poured fiber concrete and vibrated for curing to form the formwork shear wall skeleton. It is hoisted and transported to the construction site and assembled at the designated location on the construction site. After the assembly is completed, cast-in-place concrete is poured in the cavity. After the cast-in-place concrete layer reaches a certain strength, the formwork shear wall structure is formed.

[0049] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A tough formwork shear wall skeleton, characterized in that: It includes formwork, connectors and a wall steel bar skeleton. The connector is formed by back-to-back buckling of two complementary U-shaped devices. The connector has through holes for accommodating the passing of wall steel bars, and both ends of the connector are respectively anchored in the formwork on both sides. The wall steel bar skeleton is suspended and fixed between the formwork on both sides through the connector, and a cavity for cast-in-place concrete is formed between the inner surfaces of the formwork on both sides. The connector includes a first U-shaped device and a second U-shaped device. The first U-shaped device includes a first upper flange plate, a first web member, a first lower flange plate, and a first groove and a protrusion on the first web member. The second U-shaped device includes a second upper flange plate, a second web member, a second lower flange plate, and a second groove and a recess on the second web member. Among them, the first groove and the second groove form the through hole for accommodating the passing of wall steel bars, and the protrusion is inserted into the recess and buckled together to connect the first U-shaped device and the second U-shaped device. The shapes of the protrusion and the recess are circular, rectangular or triangular. The protrusion has a pointed end.

2. The tough formwork shear wall skeleton according to claim 1, characterized in that: The first groove and the second groove are semi-circular or rectangular.

3. The tough formwork shear wall skeleton according to claim 1, characterized in that: There are two through holes, upper and lower, on the connector, and the distance between the centroids of the two through holes is equal to the distance between the centroids of the outermost distributed steel bars of the wall steel bar skeleton. Among them, the distance between the upper surface of the upper through hole and the upper surface of the upper flange plate is equal to the sum of the protective layer thickness of the wall steel bar skeleton and the thickness of the formwork, and the distance between the lower surface of the lower through hole and the lower surface of the lower flange plate is equal to the sum of the protective layer thickness of the wall steel bar skeleton and the thickness of the formwork.

4. The tough formwork shear wall skeleton according to claim 1, characterized in that: The thickness range of the U-shaped device is 1 mm to 5 mm.

5. The tough formwork shear wall skeleton according to claim 1, characterized in that: The material of the U-shaped device is stainless steel, aluminum alloy, zinc alloy or magnesium alloy.

6. The tough formwork shear wall skeleton according to any one of claims 1 to 5, characterized in that: The formwork is cast into a whole by the following materials: Portland cement: 400 parts to 850 parts; Quartz sand: 450 parts to 770 parts; Fly ash: 5 parts to 900 parts; Water: 350 parts to 650 parts; PVA fiber: 10 parts to 30 parts; Water reducing agent: 5 parts to 15 parts; Granite gravel: 5 parts to 650 parts.

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