Construction method of non-dismantling composite heat preservation formwork shear wall

Abstract

The invention discloses a construction method for a non-dismantling composite heat preservation formwork shear wall. The construction method comprises the following steps that S1, multiple sets of composite heat preservation formworks and multiple sets of formwork inner supporting and fixing assemblies are prefabricated; s2, binding construction of a shear wall reinforcement cage; s3, the multiple sets of formwork inner supporting and fixing assemblies are sequentially assembled on the shear wall reinforcement cage according to set intervals; s4, relative fixing of the wood formworks and the composite heat preservation formworks is completed through a formwork inner supporting and fixing assembly, and the multiple sets of composite heat preservation formworks are of an assembled structural form; s5, the surface flatness and perpendicularity of the wood formwork and the composite heat preservation formwork are checked, and concrete pouring of the shear wall is completed after the surface flatness and perpendicularity are qualified; according to the construction method of the non-dismantling composite heat preservation formwork shear wall, the construction forming quality of the shear wall can be effectively improved, and the construction efficiency is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of building construction, and in particular relates to a construction method of a disassembly-free composite thermal insulation formwork shear wall. Background Art

[0002] The composite shear wall with non-dismantling insulation formwork has the advantages of energy saving, environmental protection and construction, and has been widely used in residential and commercial buildings. At present, the construction of non-dismantling composite insulation formwork shear wall basically follows the construction method of traditional wooden formwork shear wall, that is, the reinforcement of the formwork on both sides of the wall is completed by using tension screws. However, during the formwork reinforcement process, the anti-cracking mortar layer on the inside of the composite insulation formwork is easily damaged, which in turn causes the overall deformation of the composite insulation formwork. After the pouring, the composite shear wall with non-dismantling composite insulation formwork has quality problems such as verticality and flatness; at the same time, the overall deformation of the composite insulation formwork will also affect the sealing of the joints between the two adjacent composite insulation formworks, which is easy to cause leakage; this will not only delay the construction period, but also cause great economic losses. In addition, since the composite insulation formwork is generally prefabricated by the factory and assembled on site, the composite insulation formwork will inevitably have large and small heads during the factory pre-cutting, which will easily cause leakage at the splicing joints, and then hidden defects such as honeycombs and pockmarks will appear, causing quality problems. Therefore, it is necessary to provide a new shear wall construction method in order to effectively improve the construction quality of the shear wall and ensure the construction efficiency. Summary of the invention

[0003] In view of this, the object of the present invention is to provide a construction method of a shear wall without disassembly of a composite insulation formwork, which can effectively improve the construction molding quality of the shear wall and ensure the construction efficiency.

[0004] To achieve the above object, the present invention provides the following technical solution: a construction method of a non-disassembly composite insulation formwork shear wall, comprising the following steps:

[0005] S1: prefabricate multiple sets of composite insulation formwork and multiple sets of support and fixing components inside the formwork;

[0006] S2: Shear wall reinforcement cage bundling construction;

[0007] S3: assembling multiple sets of template internal support fixing components on the shear wall reinforcement cage in sequence according to the set spacing;

[0008] S4: The wooden formwork and the composite insulation formwork are relatively fixed by using the support fixing components inside the formwork, wherein multiple groups of composite insulation formworks are assembled in a structural form;

[0009] S5: Check the surface flatness and verticality of the wooden formwork and composite insulation formwork. If they are qualified, complete the concrete pouring of the shear wall;

[0010] Among them, the support and fixing assembly inside the formwork includes a concrete support column and a tension screw preset in the concrete support column. The concrete support column is provided with a positioning slot corresponding to the horizontal reinforcement of the shear wall steel cage. When the support and fixing assembly inside the formwork is installed, the positioning slot is clamped on the horizontal reinforcement corresponding to the shear wall steel cage; one end of the concrete support column is fixed with a support plate, the support plate is supported on the inner side of the composite insulation formwork, and the other end of the concrete support column is supported on the inner side of the wooden formwork; one end of the tension screw penetrates the composite insulation formwork and is locked by a first locking nut, and the other end of the tension screw penetrates the wooden formwork and is locked by a second locking nut.

[0011] Furthermore, the support plate and the concrete support column are an integrally cast structure.

[0012] Furthermore, the concrete support column is a rectangular column, and the positioning slot includes two U-shaped opening slots arranged at the bottom of both ends of the rectangular column.

[0013] Furthermore, a first pad is provided between the first locking nut and the composite thermal insulation template, and sealant is applied to the fitting surface between the first pad and the composite thermal insulation template.

[0014] Furthermore, a second pad is provided between the second locking nut and the wooden formwork, and sealant is applied on the fitting surface between the second pad and the wooden formwork.

[0015] Furthermore, an expansion waterstop is provided at the joint portion of two adjacent composite thermal insulation templates.

[0016] Furthermore, the composite insulation formwork includes an insulation board and an interface board, an adhesive mortar is provided between the insulation board and the interface board, a first anti-cracking mortar layer is provided on the outer side of the insulation board, and a second anti-cracking mortar layer is provided on the inner side of the interface board.

[0017] Furthermore, the splicing end of the insulation board is preset with a sealing groove arranged along the height direction, and the expansion waterstop is placed in the sealing groove.

[0018] Furthermore, the interface board is a fiber cement board, and the insulation board is a polystyrene board.

[0019] Furthermore, the outer side surfaces of the wooden formwork and the composite thermal insulation formwork are respectively reinforced by wooden slat structures.

[0020] The beneficial effects of the present invention are as follows:

[0021] The construction method of the shear wall of the composite insulation formwork provided by the present invention can effectively improve the construction molding quality of the shear wall and ensure the construction efficiency. Specifically, the construction steps of the present application are simple, and the stable support and positioning of the composite insulation formwork and the wooden formwork can be completed by using the support fixing assembly in the formwork, which simplifies the formwork installation steps and improves the construction efficiency. The tension screws integrated in the concrete support column can directly complete the stable connection between the composite insulation formwork and the wooden formwork. Since the tension screws are directly integrated in the concrete support column, the two ends of the concrete support column can form a stable support for the formworks on both sides. , the tightening force of the tension screw can be guaranteed; at the same time, since a support plate is fixed on one end of the concrete support column close to the composite insulation formwork, the support plate increases the contact area with the composite insulation formwork, so that the composite insulation formwork will not be damaged when the tension screw is tightened, and the deformation of the composite insulation formwork will not affect the cross-sectional size of the shear wall, thereby ensuring the construction quality; further, the tensioning force will not affect the docking quality of the spliced ​​ends of the composite insulation formwork, thus avoiding leakage at the joints, which is beneficial to ensuring the quality of wall construction; of course, as a part of the wall, the composite insulation formwork does not need to be dismantled in the later stage, which is also beneficial to ensuring construction efficiency.

[0022] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of a cross-sectional structure of an embodiment of the present invention

[0024] Figure 2 A schematic diagram of a top view of an embodiment of the present invention

[0025] Figure markings: 1-composite insulation formwork; 101-insulation board; 101a-sealing slot; 102-interface plate; 103-bonding mortar; 104-first anti-cracking mortar layer; 105-second anti-cracking mortar layer; 2-support and fixing components inside the formwork; 201-concrete support column; 201a-positioning slot; 202-tension screw; 203-support plate; 3-shear wall reinforcement cage; 301-horizontal reinforcement; 4-wooden formwork; 5-first locking nut; 501-first pad; 6-second locking nut; 601-second pad; 7-sealant; 8-expansion waterstop. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0027] See also Figure 1-2 In this embodiment, a construction method of a non-disassembly composite insulation formwork shear wall is disclosed, comprising the following steps:

[0028] S1: prefabricate multiple sets of composite insulation templates 1 and multiple sets of template internal support and fixing components 2;

[0029] S2: Shear wall reinforcement cage 3 bundling construction;

[0030] S3: assembling multiple sets of template internal support fixing components 2 on the shear wall reinforcement cage 3 in sequence according to the set spacing. The set spacing here preferably ranges from 20 to 40 cm. Of course, the spacing range can be appropriately enlarged or reduced according to the design support strength requirements of the shear wall;

[0031] S4: using the internal support fixing assembly 2 of the template to complete the relative fixation of the wooden template 4 and the composite insulation template 1, wherein multiple groups of composite insulation templates 1 are assembled in a structural form;

[0032] S5: Check the surface flatness and verticality of the wooden formwork 4 and the composite insulation formwork 1. If they are qualified, the concrete pouring of the shear wall is completed. Here, the surface flatness and verticality are consistent with the existing detection technology, such as using a ruler and a wedge-shaped feeler gauge to detect flatness, and using a ruler and a vertical level to detect verticality, which will not be repeated here;

[0033] Wherein, the template inner support fixing assembly 2 includes a concrete support column 201 and a tension screw 202 preset in the concrete support column 201, the concrete support column 201 is provided with a positioning card slot 201a corresponding to the horizontal rib 301 of the shear wall steel cage 3, and when the template inner support fixing assembly 2 is installed, the positioning card slot 201a is clamped on the horizontal rib 301 corresponding to the shear wall steel cage 3; one end of the concrete support column 201 is fixed with a support plate 203, the support plate 203 is supported on the inner side of the composite thermal insulation template 1, and the other end of the concrete support column 201 is supported on the inner side of the wooden template 4; one end of the tension screw 202 penetrates the composite thermal insulation template 1 and is locked by the first locking nut 5, and the other end of the tension screw 202 penetrates the wooden template 4 and is locked by the second locking nut 6;

[0034] The construction method of the shear wall of the composite insulation formwork provided above can effectively improve the construction quality of the shear wall and ensure the construction efficiency. Specifically, the construction steps of the present application are simple, and the composite insulation formwork 1 and the wooden formwork 4 can be stably supported and positioned by using the support fixing assembly 2 in the formwork, which simplifies the formwork installation steps and improves the construction efficiency. The tension screw 202 integrated in the concrete support column 201 can directly complete the stable connection between the composite insulation formwork 1 and the wooden formwork 4. Since the tension screw 202 is directly integrated in the concrete support column 201, the two ends of the concrete support column 201 can form a stable support for the formworks on both sides. , the tightening force of the tension screw 202 can be guaranteed; at the same time, since the support plate 203 is fixedly provided at one end of the concrete support column 201 close to the composite insulation formwork 1, the support plate 203 increases the contact area with the composite insulation formwork 1, so that the composite insulation formwork 1 will not be damaged when the tension screw 202 is tightened, and the deformation of the composite insulation formwork 1 will not affect the cross-sectional size of the shear wall, thereby ensuring the construction quality; further, the docking quality of the spliced ​​end of the composite insulation formwork 1 will not be affected by the tensioning force, and leakage at the joints will be avoided, which is beneficial to ensuring the quality of wall construction; of course, the composite insulation formwork, as a part of the wall, does not need to be dismantled in the later stage, which is also beneficial to ensuring construction efficiency.

[0035] In this embodiment, the support plate 203 and the concrete support column 201 are an integrally cast structure with good structural strength and can be prefabricated in one go, which helps to reduce on-site assembly and use and further improve construction efficiency.

[0036] In this embodiment, the concrete support column 201 is a rectangular column, and the positioning slot 201a includes two U-shaped opening slots arranged at the bottom of both ends of the rectangular column; when used, the two U-shaped opening slots can be buckled on the two horizontal ribs 301 to form a stable support and limit for the concrete support column 201, ensuring the convenience of construction and positioning accuracy; the structure of the rectangular column is conducive to the stable erection of the concrete support column 201 on the horizontal ribs 301, and is also conducive to improving the convenience of assembly.

[0037] In the present embodiment, a first pad 501 is provided between the first locking nut 5 and the composite insulation formwork 1, and a sealant 7 is applied to the fitting surface between the first pad 501 and the composite insulation formwork 1; specifically, the first pad 501 is made of a rectangular steel plate, and the provision of the first pad 501 is conducive to ensuring the connection fixity of the first locking nut 5, and at the same time, the applied sealant 7 is conducive to ensuring that the connection will not leak, and is conducive to ensuring the cleanliness of the construction site.

[0038] In this embodiment, a second pad 601 is provided between the second locking nut 6 and the wooden formwork 4, and a sealant 7 is applied to the fitting surface between the second pad 601 and the wooden formwork 1; specifically, the second pad 601 is made of a rectangular steel plate, and the second pad 601 is provided to help ensure the connection fixity of the second locking nut 6. At the same time, the applied sealant 7 helps to ensure that the connection will not leak, and helps to ensure the cleanliness of the construction site.

[0039] In this embodiment, an expansion waterstop strip 8 is provided at the joint portion of two adjacent composite insulation formworks 1; the expansion waterstop strip 8 is provided, which helps to overcome the problem of leakage at the joints caused by the manufacturing precision during the pre-cutting process of the composite insulation formwork 1, thereby further improving the construction quality.

[0040] In this embodiment, the composite insulation formwork 1 includes an insulation board 101 and an interface board 102, a bonding mortar 103 is provided between the insulation board 101 and the interface board 102, the outer side of the insulation board 1 is provided with a first anti-cracking mortar layer 104, and the inner side of the interface board 102 is provided with a second anti-cracking mortar layer 105; the composite insulation formwork 1 used in this structure has good structural strength, and the setting of the anti-cracking mortar layer is conducive to ensuring the casting quality of the shear wall.

[0041] In this embodiment, the splicing end of the insulation board 101 is preset with a sealing groove 101a arranged along the height direction, and the expansion waterstop strip 8 is placed in the sealing groove 101a; by pre-setting the sealing groove 101a, it is beneficial to ensure the installation stability and convenience of the expansion waterstop strip 8, and it is beneficial to improve the sealing effect and durability of the connection.

[0042] In this embodiment, the interface plate is a fiber cement board, and the insulation board 101 is a polystyrene board. The fiber cement board has good strength and is cheap; the polystyrene board has good insulation effect.

[0043] In this embodiment, the outer side surfaces of the wooden formwork and the composite insulation formwork are respectively reinforced by wooden slatted structures. The outer side surface refers to the side against the outside of the wall. The wooden slatted structure adopts the existing wooden reinforcement structure, which will not be repeated here. By setting up the wooden slatted structure reinforcement, it is beneficial to further improve the stability of the formwork structure, thereby further improving the construction quality.

[0044] Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A construction method for a non-disassembly composite insulation formwork shear wall, characterized in that: The steps include: S1: prefabricate multiple sets of composite insulation formwork and multiple sets of support and fixing components inside the formwork; S2: Shear wall reinforcement cage bundling construction; S3: assembling multiple sets of template internal support fixing components on the shear wall reinforcement cage in sequence according to the set spacing; S4: The wooden formwork and the composite insulation formwork are relatively fixed by using the support fixing components inside the formwork, wherein multiple groups of composite insulation formworks are assembled in a structural form; S5: Check the surface flatness and verticality of the wooden formwork and composite insulation formwork. If they are qualified, complete the concrete pouring of the shear wall; Among them, the support and fixing assembly inside the formwork includes a concrete support column and a tension screw preset in the concrete support column. The concrete support column is provided with a positioning slot corresponding to the horizontal reinforcement of the shear wall steel cage. When the support and fixing assembly inside the formwork is installed, the positioning slot is clamped on the horizontal reinforcement corresponding to the shear wall steel cage; one end of the concrete support column is fixed with a support plate, the support plate is supported on the inner side of the composite insulation formwork, and the other end of the concrete support column is supported on the inner side of the wooden formwork; one end of the tension screw penetrates the composite insulation formwork and is locked by a first locking nut, and the other end of the tension screw penetrates the wooden formwork and is locked by a second locking nut.

2. The construction method of the non-disassembly composite insulation formwork shear wall according to claim 1 is characterized by: The support plate and the concrete support column are an integrally cast structure.

3. The construction method of the non-disassembly composite insulation formwork shear wall according to claim 2 is characterized by: The concrete support column is a rectangular column, and the positioning slot includes two U-shaped opening slots arranged at the bottom of both ends of the rectangular column.

4. The construction method of the non-disassembly composite insulation formwork shear wall according to claim 1 is characterized by: A first pad is provided between the first locking nut and the composite thermal insulation template, and sealant is applied to the fitting surfaces of the first pad and the composite thermal insulation template.

5. The construction method of the non-disassembly composite insulation formwork shear wall according to claim 4 is characterized in that: A second pad is provided between the second locking nut and the wooden template, and sealant is applied on the fitting surface of the second pad and the wooden template.

6. The construction method of the non-disassembly composite insulation formwork shear wall according to claim 1 is characterized by: The joints of two adjacent composite thermal insulation templates are provided with expansion waterstops.

7. The construction method of the non-disassembly composite thermal insulation formwork shear wall according to claim 6 is characterized by: The composite thermal insulation template comprises a thermal insulation board and an interface board, a bonding mortar is arranged between the thermal insulation board and the interface board, a first anti-cracking mortar layer is arranged on the outer side of the thermal insulation board, and a second anti-cracking mortar layer is arranged on the inner side of the interface board.

8. The construction method of the non-disassembly composite insulation formwork shear wall according to claim 7 is characterized by: The splicing end of the insulation board is preset with a sealing groove arranged along the height direction, and the expansion water stop strip is placed in the sealing groove.

9. The construction method of the non-disassembly composite insulation formwork shear wall according to claim 7 is characterized by: The interface board is a fiber cement board, and the insulation board is a polystyrene board.

10. The construction method of the non-disassembly composite thermal insulation formwork shear wall according to claim 1 is characterized by: The outer sides of the wooden formwork and the composite thermal insulation formwork are respectively reinforced by wooden slat structures.

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