Thermal insulation integrated non-dismantling formwork system of outer wall shear wall structure and construction method of thermal insulation integrated non-dismantling formwork system

Abstract

The invention discloses an outer wall shear wall structure heat preservation integrated non-dismantling formwork system and a construction method thereof, and belongs to the technical field of building industrialization and energy saving. The system is improved on the basis of a pourable structure technology of a disclosed disassembly-free heat preservation formwork, and the core of the system is that a heat preservation plate is composed of a first heat preservation plate with the length equal to the pouring layer height and a longer second heat preservation plate, the first heat preservation plate and the second heat preservation plate are vertically installed in a preset high-low staggered mode, and a lock catch structure with the top and the bottom flush and the middle high-low staggered is formed; therefore, transverse through joints are effectively avoided, and the integrality, waterproofness and crack resistance of the outer wall are remarkably improved. The heat preservation plate is provided with special ground anchors with exhaust holes, and it is guaranteed that concrete is poured compactly. The invention also can be integrated with a wallboard anchoring system for an internal partition wall, and provides a systematic construction method matched with the wallboard anchoring system. The applicability of the heat preservation integration technology of the disassembly-free heat preservation formwork structure is expanded, and the heat preservation formwork structure is suitable for various buildings adopting shear wall structures.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of building industrialization and building energy-saving technology, and particularly relates to a kind of outer wall shear wall formwork system and its construction method that insulation function and structure construction are integrated and completed synchronously. BACKGROUND

[0002] With the continuous improvement of building energy-saving requirements and the development of building industrialization, the structure insulation integration technology has attracted widespread attention due to its ability to achieve the same life of the insulation layer and the building structure, avoid the insulation layer falling off in the later stage, and improve the construction efficiency. The existing technology usually uses a removable insulation formwork as an outer form for concrete pouring, and connects the insulation layer and the concrete structure through anchors.

[0003] Chinese patent application No. CN119711658A (hereinafter referred to as "the basic patent") discloses a "pourable structure" which uses insulation boards, wall panels and ordinary formworks to achieve integrated pouring of the main structure and insulation anchoring. This technical solution lays a good foundation for the structure insulation integration technology of external walls, and effectively solves the problems of loose anchoring of traditional external wall insulation layer, poor fire performance, potential safety hazards, and high cost of construction process. However, the solution is limited to the application of frame structure buildings, and a large number of shear wall structure buildings cannot be satisfied. Secondly, the horizontal joint is usually in a straight line, which is easy to form a through joint, become a potential weak point of waterproofing and stress concentration point, affecting the integrity and crack resistance of the external wall. Thirdly, each layer of construction is relatively independent, and the overall planning of the entire facade structure is insufficient, which may lead to cumulative errors or complex joint processing.

[0004] The original technology still has room for expansion and optimization.

[0005] Therefore, there is an urgent need for a new removable formwork system and method that can be applied to shear wall structure insulation integration, effectively avoid horizontal through joints, enhance the integrity of the external wall, and optimize the construction process. SUMMARY

[0006] (I) Invention purpose The purpose of the present application is to provide an external wall shear wall structure insulation integration removable formwork system and its construction method to overcome the above-mentioned shortcomings of the prior art. The purpose is to expand the application range of the pourable structure, optimize the vertical arrangement of the insulation board, form an effective locking structure, avoid horizontal through joints, and achieve overall structure insulation integration of the external wall, thereby significantly improving the insulation, integrity, waterproofness and crack resistance of the external wall, and providing a set of efficient and quality controllable construction method.

[0007] (II) Technical solution In order to achieve the above object, the present application adopts the following technical solutions: In a first aspect, the present application provides a heat preservation integrated form removal template system for an outer wall shear wall structure, which comprises a heat preservation plate and a common template.

[0008] The heat preservation plate serves as a form removal template for the outer wall shear wall and is arranged on the outer side, the inner side or both sides of the outer wall shear wall.

[0009] The core improvement of the present application is that the heat preservation plate comprises a first heat preservation plate with a length equal to the pouring layer height and a second heat preservation plate with a length greater than the first heat preservation plate. When the first heat preservation plate and the second heat preservation plate are installed vertically, they are arranged in a preset high-low staggered mode, so that the heat preservation plates of the entire outer wall form a lock structure with the top and bottom flush and the middle high-low staggered.

[0010] Further, when the first heat preservation plate and the second heat preservation plate are installed for the first time at the bottom layer, they are installed alternately left and right next to each other. From each intermediate layer above the bottom layer, the first heat preservation plate is continuously stacked vertically. When the first heat preservation plate and the second heat preservation plate are installed at the top layer, they are installed alternately left and right after being transposed.

[0011] Further, the heat preservation plate is provided with a first anchoring hole penetrating therethrough, and an outer side thereof is provided with a coaxial circular concave surface with a diameter greater than the hole diameter. The first anchoring hole is provided with a first anchor, which comprises a blocking piece, a fixed rod and a main rod. One end of the main rod is fixedly installed at the center of the blocking piece, the fixed rod abuts against the inner side of the heat preservation plate and is clamped and fixed on the heat preservation plate, and the other end of the main rod extends into the steel mesh cage of the main structure. The blocking piece is attached to the coaxial circular concave surface, and at least one exhaust small hole for exhaust during pouring is formed in the blocking piece.

[0012] Further, when the heat preservation plate is installed on the inner side of the outer wall, a third heat preservation plate with a length equal to the layer height minus the thickness of the roof panel is also included.

[0013] In a second aspect, the present application also provides a building structure template system, which comprises the heat preservation integrated form removal template system for the outer wall shear wall structure of the first aspect and a wall plate for an inner partition wall. The top end and the bottom end of the wall plate are respectively pre-drilled with a second anchoring hole and a third anchoring hole.

[0014] Further, when the heat preservation integrated form removal template system for the outer wall shear wall structure comprises the third heat preservation plate, the anchoring mode of the bottom end of the third heat preservation plate is the same as the anchoring mode of the wall plate.

[0015] Further, a second anchor is implanted in the second anchor hole, and a main rod of the second anchor is fixed to the upper part of the upper reinforcement cage; a third anchor is implanted in the third anchor hole, and a main rod of the third anchor is fixed to the lower reinforcement cage.

[0016] Further, a vent hole (2211) is drilled in the side of the second anchor hole (221) and communicates with the bottom of the second anchor hole (221), and an angle between an axis of the vent hole (2211) and a horizontal plane is not less than 0°; a grouting hole (2311) is drilled in the side of the third anchor hole and communicates with the bottom of the third anchor hole, and an angle between an axis of the grouting hole (2311) and a horizontal plane is not less than 0°, so that pressure grouting is performed on the third anchor hole.

[0017] In a third aspect, the present application provides a construction method for the system.

[0018] The first construction method is used for the external wall shear wall structure insulation integrated formwork system, and includes the following steps. S1: The reinforcement cage of the foundation is bound, and a third anchor for anchoring the third insulation board can be pre-embedded according to needs; the foundation formwork is installed, and the concrete is poured; S2: The control line of the bottom formwork is calibrated, and the reinforcement cage of the shear wall is bound; S3: According to the preset mode, the first insulation board and the second insulation board are alternately installed on the left and right of the external wall to form a starting lock structure with the bottom ends flush and the top ends staggered in height; S4: The ordinary formwork is installed to fill the one side of the external wall and other non-insulation areas, and the first anchor is fixed synchronously, and a main rod of the first anchor extends into the reinforcement cage of the structure, and the upper reinforcement cage is bound after the verticality and flatness of the formwork are corrected; S5: The concrete is poured integrally, and the vent hole is closed when the slurry flows out of the vent hole; S6: The first insulation board is vertically stacked on the first insulation board and the second insulation board which are installed first to the pouring height of the next time, and the steps S4 to S5 are repeated to pour the concrete; S7: The step S6 is repeated until the top layer is capped, the first insulation board and the second insulation board are alternately installed with the left and right positions exchanged at the top layer, and the complete lock structure with the top and bottom flush and the middle staggered in height is formed after pouring the concrete again.

[0019] Further, when the system includes the third insulation board arranged on the inner side of the external wall, the step S3 is synchronously performed, and further includes the step S3a: the third insulation board is installed, the third anchor hole at the bottom end of the third insulation board is inserted into the third anchor pre-embedded in the foundation or the lower structure, the second anchor (222) is implanted in the second anchor hole (221), and temporary support is provided; the concrete is integrally poured, and the vent hole (2211) is closed when the slurry flows out of the vent hole (2211).

[0020] Furthermore, after step S5, step S5a is also included: pressure grouting is performed on the third anchoring hole at the bottom of the third insulation board through the grouting hole (2311) to complete the final anchoring of the third insulation board.

[0021] The second construction method, used for the building structure formwork system, includes the following steps: P1: Tie the steel mesh cage during the foundation stage and pre-embed the third anchor nails for anchoring the wall panels; install the foundation formwork and pour concrete; P2: Mark the control line for the bottom formwork and tie the steel mesh cage for the shear wall; P3: Based on the preset high-low staggered pattern, the first insulation board and the second insulation board are alternately installed on the left and right sides of the exterior wall to form a starting locking structure with the bottom end flush and the top end staggered. P4: Install the ordinary template to fill one side of the exterior wall and other non-insulated areas, and simultaneously fix the first anchor nail, whose main rod extends into the steel mesh cage of the structure; P5: Install the wall panel, insert the third anchor hole at its bottom end into the pre-embedded third anchor nail, and provide temporary support; then correct the verticality and flatness of the template and wall panel, and tie the upper steel mesh cage. P6: Pour concrete as a whole and seal it when you observe the vent holes and the slurry flowing out of the vent holes; P7: Pressure grouting is performed on the third anchoring hole at the bottom of the wall panel through the grouting hole (2311) to complete the final anchoring of the wall panel; P8: On top of the first and second insulation boards that were installed initially, vertically stack the first insulation board to the next pouring height, and repeat steps P4 to P7 for pouring; P9: Repeat step P8 until the top layer is sealed. On the top layer, swap the left and right positions of the first insulation board and the second insulation board and install them alternately. After pouring again, a complete interlocking structure with the top and bottom flush and the middle staggered is formed.

[0022] (III) Beneficial Effects Compared with the prior art, the beneficial effects of the present invention are as follows: Structural innovation: By arranging two types of insulation boards of different lengths at different heights in an alternating manner, a "locking" or "interlocking" effect similar to bricklaying is formed, which significantly reduces the formation of horizontal through joints and improves the integrity, waterproof sealing and crack resistance of the exterior wall.

[0023] Systematic construction logic: through the process of "bottom staggered-intermediate superimposed-top transposed staggered", the high-quality outer wall facade is realized from bottom to top once forming, top and bottom flush, the construction process is clear, the quality control is simple, and the cumulative error is reduced.

[0024] Modularity and flexibility: the outer wall system of the application can be flexibly combined with the inner partition wall system to form a complete building formwork solution. The insulation board can also use the similar anchoring method as the wallboard on the inner side, which enhances the applicability of the system.

[0025] Inheritance and enhancement of the advantages of the basic patent: while retaining the advantages of integrated pouring, efficient construction, and reliable anchoring, the key part of the shear wall outer wall is deeply optimized, so that the maturity and market competitiveness of the whole technical scheme have been qualitatively leaped. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is the facade schematic diagram of the high-low staggered locking buckle structure of the insulation board in the embodiment of the application.

[0027] Figure 2 is the formwork assembly structure schematic diagram under the outer wall external insulation condition in the embodiment of the application.

[0028] Figure 3 is the formwork assembly structure schematic diagram under the outer wall double-side insulation condition in the embodiment of the application.

[0029] Figure 4 is the formwork assembly structure schematic diagram under the outer wall inner insulation condition in the embodiment of the application.

[0030] Figure 5 is the assembly structure schematic diagram of the first anchor nail and the insulation board in the embodiment of the application.

[0031] Figure 6 is the assembly structure schematic diagram of the second anchoring hole at the top of the wallboard or the third insulation board and the second anchor nail in the embodiment of the application.

[0032] Figure 7 is the assembly structure schematic diagram of the third anchoring hole at the bottom of the wallboard or the third insulation board and the third anchor nail in the embodiment of the application.

[0033] Figure 8 is the structure schematic diagram of the first anchor nail in the embodiment of the application.

[0034] Figure 9 is the structure schematic diagram of the second anchor nail and the third anchor nail (both structures are the same, and the use positions are different) in the embodiment of the application.

[0035] Figure 10 is the structure schematic diagram of the coaxial circular concave surface of the first anchoring hole.

[0036] The reference signs involved in the above-mentioned drawings are explained as follows: 1a, first insulation board, 1b, second insulation board, 1c, third insulation board, 111, first anchoring hole, 1111, coaxial circular concave surface, 112, first anchor, 1121, blocking piece, 1122, fixing rod, 1123, main rod, 1124, exhaust small hole; 221, second anchoring hole, 2211, exhaust hole, 222, second anchor; 231, third anchoring hole, 2311, grouting hole, 232, third anchor. DETAILED DESCRIPTION

[0037] The application will be further described in detail below in combination with the drawings and specific embodiments. The embodiments are only used to explain the application and do not serve to limit the protection scope of the application.

[0038] Embodiment: An external wall shear wall structure insulation integrated construction of a civil residential building Material preparation: Insulation board (1): ALC board is selected, with a thickness of 100 mm. Two specifications are pre-processed in a factory: the first insulation board (1a) has a height of the pouring layer height (such as 3.0 meters); and the second insulation board (1b) has a height of the layer height plus an overlapping amount (such as 3.3 meters).

[0039] Anchoring member: the first anchor (112), the second anchor (222), and the third anchor (232) are all made of HRB400 grade steel bars, with a rust-proof treatment on the surface.

[0040] Wallboard (2): ALC board is selected, with a thickness of 200 mm.

[0041] Construction steps: Foundation construction: The reinforcement mesh cage at the foundation stage is bound, the foundation formwork is installed, and the concrete is poured.

[0042] First layer construction: The reinforcement mesh cage of the first layer shear wall is bound.

[0043] According to the position of the line, the external wall insulation board is started to be installed. As shown in the figure, from left to right, the first insulation board (1a) and the second insulation board (1b) are alternately installed, forming the starting basis of the high-low staggered lock structure. Figure 2

[0044] ​Install the common formwork (3) to fill the outer wall side and other non-insulation areas. During installation, insert the first anchor (112) into the pre-drilled first anchor hole (111) and preliminarily fix it, so that the blocking piece (1121) is tightly attached to the coaxial circular concave surface (1111), and the other end of the main rod (1123) extends into the steel mesh cage of the structure. Correct the verticality and flatness of the formwork and bind the upper steel mesh cage.

[0045] (Optionally, simultaneously) If the third insulation board (1c) on the inner side of the outer wall needs to be installed, as shown in Figure 3 and Figure 4 , simultaneously S3, align the third anchor hole (231) at the bottom with the third anchor (232) pre-buried in the foundation beam, and insert the second anchor (222) into the second anchor hole (221). Temporary support is done.

[0046] Pour the first layer of concrete. During pouring, closely observe the flow of slurry from the first anchor (112) exhaust hole (1124) and the third insulation board (1c) exhaust hole (2211). Once the slurry flows uniformly, immediately seal it to ensure the compactness of the concrete in the anchor hole.

[0047] (Optionally) After the first layer of concrete reaches the required strength, pressure grouting can be performed on the bottom of the third insulation board (1c) through the grouting hole (2311) to complete the final anchoring.

[0048] Standard layer construction: After the first layer of concrete reaches the required strength, construction of the second layer can begin above it. As shown in Figure 1 , only the first insulation board (1a) needs to be installed vertically on top of the first insulation board (1a) and the second insulation board (1b) installed in the first layer.

[0049] Repeat the formwork, anchoring, steel binding, and pouring process of the first layer. This cycle continues until the top layer.

[0050] Top layer construction: When reaching the top layer, as shown in Figure 1 , the installation positions of the first insulation board (1a) and the second insulation board (1b) are "swapped left and right" with the bottom layer. That is, install the second insulation board (1b) in the position where the first insulation board (1a) was installed in the bottom layer, and vice versa. Formwork and pouring are performed again.

[0051] This forms a complete lock structure with the top and bottom of the entire building outer wall being flush and the middle being staggered in height, as shown in Figure 1 .

[0052] For systems that include interior partition walls: If the system includes an internal partition wall panel (2), a third anchor (232) for the wall panel is pre-embedded during foundation construction. During the construction of each floor, while installing the ordinary formwork and fixing the first anchor (step P5), the wall panel (2) is installed and temporarily supported. Then, the verticality and flatness of the formwork and wall panel are corrected, and the upper steel mesh cage is tied. After the main structure of each floor is poured and reaches its strength, step P7 is executed, and pressure grouting is performed on the third anchor hole (231) at the bottom of the wall panel (2) through the grouting hole (2311) to complete the final fixing of the internal partition wall.

[0053] Through the above embodiments, the present invention successfully constructs a high-quality exterior wall system with strong integrity, no transverse seams, and integrated insulation and structure, achieving efficient and controllable construction. It should be noted that the above embodiments are merely specific demonstrations of the present invention and are not intended to limit the invention. Those skilled in the art can make various modifications and substitutions without departing from the spirit and substance of the present invention. For example, the insulation board material can be any suitable insulation material such as composite insulation board; the specific structure and fixing method of the anchors can have various implementation forms. These modifications and substitutions should all fall within the protection scope defined by the claims of this invention.

Claims

1. A thermal insulation integrated, non-removable formwork system for exterior shear wall structures, characterized in that, include: Insulation board (1), which serves as a non-removable template for the external shear wall, is set on the outside, inside, or both sides of the external shear wall; ordinary template (3) is used to enclose and fill in the template on the side of the external wall where the insulation board (1) is not set or in other areas; wherein, the insulation board (1) includes a first insulation board (1a) with a length equal to the height of the pouring layer and a second insulation board (1b) with a length greater than the first insulation board (1a); when the first insulation board (1a) and the second insulation board (1b) are installed vertically, they are arranged in a preset staggered pattern so that the insulation board (1) of the entire external wall forms a locking structure with the top and bottom flush and the middle staggered.

2. The system according to claim 1, characterized in that: The preset mode is as follows: when the bottom layer is installed for the first time, the first insulation board (1a) and the second insulation board (1b) are installed alternately on the left and right sides; from each intermediate layer above the bottom layer, the first insulation board (1a) is continuously stacked vertically; when the top layer is installed, the first insulation board (1a) and the second insulation board (1b) are swapped and then installed alternately on the left and right sides.

3. The system according to claim 1 or 2, characterized in that: The insulation board (1) is provided with a through first anchor hole (111), and the outer side of the first anchor hole (111) is provided with a coaxial circular concave surface (1111) with a diameter larger than its hole diameter; a first anchor nail (112) is provided in the first anchor hole (111), and the first anchor nail (112) includes a sealing piece (1121), a fixing rod (1122) and a main rod (1123); one end of the main rod (1123) is installed and fixed at the center of the sealing piece (1121), the fixing rod (1122) abuts against the inner side of the insulation board (1) and clamps and fixes it on the insulation board (1), and the other end of the main rod (1123) extends into the steel mesh cage of the main structure; the sealing piece (1121) fits against the coaxial circular concave surface (1111), and at least one small vent hole (1124) is opened on it for venting during pouring.

4. The system according to claim 1, characterized in that: When the insulation board (1) is installed on the inside of the exterior wall, it also includes a third insulation board (1c) with a length equal to the floor height minus the thickness of the roof panel.

5. A building structure formwork system, characterized in that, The system includes an integrated thermal insulation and non-removable formwork system for external shear wall structures as described in any one of claims 1-4, and a wall panel (2) for internal partition walls, wherein the top and bottom ends of the wall panel (2) are pre-drilled with a second anchor hole (221) and a third anchor hole (231), respectively.

6. The system according to claim 5, characterized in that, When the external wall shear wall structure thermal insulation integrated non-removable formwork system is the system described in claim 4, the anchoring method of the bottom end of the third insulation board (1c) is the same as the anchoring method of the wall panel (2).

7. The system according to claim 5, characterized in that: A second anchor (222) is inserted into the second anchor hole (221), and the main rod of the second anchor (222) is fixed to the upper part of the upper steel mesh cage; a third anchor (232) pre-embedded in the lower steel mesh cage is inserted into the third anchor hole (231), and the main rod of the third anchor (232) is fixed to the lower steel mesh cage.

8. The system according to claim 6, characterized in that: The second anchor hole (221) has an exhaust hole (2211) drilled on its side that communicates with its bottom, and the angle between its axis and the horizontal plane is not less than 0°. The third anchor hole (231) has a grouting hole (2311) drilled on its side that communicates with its bottom, and the angle between its axis and the horizontal plane is not less than 0°, for pressure grouting of the third anchor hole (231).

9. A construction method for an integrated thermal insulation, non-removable formwork system for exterior wall shear wall structures as described in any one of claims 1-4, characterized in that, Includes the following steps: S1: Tie the steel mesh cage during the foundation stage, and pre-embed the third anchor nail (232) for anchoring the third insulation board (1c) as needed; install the foundation formwork and pour concrete; S2: Mark the control line for the bottom formwork and tie the steel mesh cage for the shear wall; S3: According to the preset mode, the first insulation board (1a) and the second insulation board (1b) are alternately installed on the left and right sides of the exterior wall to form a starting locking structure with the bottom end flush and the top end staggered. S4: Install the ordinary template (3) to fill in the non-insulated area, and simultaneously fix the first anchor (112). Its main rod (1123) extends into the steel mesh cage of the structure, and tie the upper steel mesh cage after correcting the verticality and flatness of the template. S5: Pour concrete as a whole and seal it when grout is observed flowing out of the vent hole (1124); S6: On top of the first insulation board (1a) and the second insulation board (1b) that were installed initially, vertically stack the first insulation board (1a) to the next pouring height, and repeat steps S4 to S5 for pouring; S7: Repeat step S6 until the top layer is sealed. On the top layer, the first insulation board (1a) and the second insulation board (1b) are interchanged and installed alternately. After pouring again, a complete interlocking structure with the top and bottom flush and the middle layer staggered is formed.

10. The construction method according to claim 9, characterized in that, When the system includes a third insulation board (1c) installed on the inner side of the exterior wall, the synchronous step S3 also includes the following steps: S3a: Install the third insulation board (1c), insert the third anchoring hole (231) at its bottom end into the third anchor (232) pre-embedded in the foundation or lower structure, insert the second anchor (222) into the second anchoring hole (221) at its top end, and provide temporary support; when pouring concrete as a whole, seal the vent (2211) when grout is observed flowing out.

11. The construction method according to claim 10, characterized in that, The step S5 is followed by the following steps: S5a: Pressure grouting is performed on the third anchoring hole (231) at the bottom of the third insulation board (1c) through the grouting hole (2311) to complete the final anchoring of the third insulation board (1c).

12. A construction method for the building structure formwork system according to any one of claims 5-7, characterized in that, Includes the following steps: P1: Tie the steel mesh cage for the foundation stage and pre-embed the third anchor nail (232) for anchoring the wall panel (2); install the foundation formwork and pour concrete; P2: Mark the control line for the bottom formwork and tie the steel mesh cage for the shear wall; P3: According to the preset high and low staggered pattern, the first insulation board (1a) and the second insulation board (1b) are alternately installed on the left and right sides of the exterior wall to form a starting locking structure with the bottom end flush and the top end staggered. P4: Install the ordinary template (3) to fill in the non-insulated area, and simultaneously fix the first anchor nail (112), whose main rod (1123) extends into the steel mesh cage of the structure; P5: Install the wall panel (2), insert the third anchor hole (231) at its bottom end into the pre-embedded third anchor (232) and provide temporary support; then correct the verticality and flatness of the template and wall panel, and tie the upper steel mesh cage; P6: Pour concrete as a whole and seal it when grout is observed flowing out of the vent (1124); P7: Pressure grouting is performed on the third anchoring hole (231) at the bottom of the wall panel (2) through the grouting hole (2311) to complete the final anchoring of the wall panel (2); P8: On top of the first insulation board (1a) and the second insulation board (1b) that were installed initially, vertically stack the first insulation board (1a) to the next pouring height, and repeat steps P4 to P7 for pouring; P9: Repeat step P8 until the top layer is sealed. On the top layer, the first insulation board (1a) and the second insulation board (1b) are interchanged and installed alternately. After pouring again, a complete interlocking structure with the top and bottom flush and the middle staggered is formed.

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