A formwork device for local replacement test of concrete shear walls

Abstract

The present invention discloses a formwork device for a local replacement test of a concrete shear wall, comprising two side formworks arranged opposite to each other and an end formwork located between the two side formworks, wherein the end formworks are perpendicular to the side formworks, and each end formwork comprises a first end formwork located at the side, a second end formwork and a third end formwork located in the middle, wherein when the first end formwork is matched with the third end formwork, a hole is formed for the horizontal steel bars of the concrete shear wall to pass through; and when the second end formwork is matched with the third end formwork, a hole is formed for the horizontal steel bars of the concrete shear wall to pass through.

Description

Technical Field

[0001] The present invention belongs to the technical field of building construction, and in particular relates to a formwork device for a local replacement test of a concrete shear wall. Background Art

[0002] Amidst the booming construction industry, an increasing number of buildings are experiencing quality issues. This is partly due to the rapid pace of development in the current construction industry, which has hindered construction quality and management, and a serious shortage of skilled workers. This has led to a lack of a comprehensive quality supervision and construction management system during the construction process, often due to insufficient material strength. Furthermore, many buildings were constructed long ago without consideration of seismic design considerations. Furthermore, some buildings have already reached their designed service life and lack the ability to withstand natural disasters, nor can they meet the functional requirements of their structures. To fundamentally address this issue, shear wall replacement is often employed.

[0003] However, the most difficult problem to solve in the local replacement test of concrete shear wall is how to support the formwork of the shear wall. Because the local replacement test of concrete shear wall is different from the on-site construction conditions, it is necessary to pour a part of the wall concrete first during the test. When pouring the concrete of this part of the wall, the steel bars in the wall, especially the horizontal steel bars (see Appendix Figure 1 The horizontal reinforcement 21) in the concrete shear wall creates great difficulties in the erection of the formwork. In addition, the traditional shear wall formwork has a simple working structure and poor fixing effect, which is prone to misalignment at the junction of the formwork. In addition, the presence of horizontal and vertical reinforcement in the local replacement test of the concrete shear wall further increases the difficulty of formwork support. If the above problems are not solved, it is easy to cause inaccurate formwork positioning, poor pouring quality, and leakage and expansion of the formwork during the pouring process. After pouring, the wall's integrity is poor and the force effect is poor. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a formwork device for local replacement tests of concrete shear walls, which has the advantages of easy production, cost savings, accurate formwork positioning, and the ability to accurately avoid the steel bars in the wall, thereby avoiding leakage and formwork expansion during the pouring process. After the pouring is completed, the wall has a good force-bearing effect.

[0005] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0006] In the first aspect, the present invention provides a formwork device for a local replacement test of a concrete shear wall, comprising two side formworks arranged opposite to each other and an end face formwork located between the two side formworks, wherein the end face formworks are perpendicular to the side formworks, and is characterized in that each end face formwork comprises a first end face formwork located at the side, a second end face formwork and a third end face formwork located in the middle position, and when the first end face formwork is matched with the third end face formwork, a hole is formed for the horizontal steel bars of the concrete shear wall to pass through; when the second end face formwork is matched with the third end face formwork, a hole is formed for the horizontal steel bars of the concrete shear wall to pass through.

[0007] As a further technical solution, the first end face template and the third end face template are matched through a convex-concave structure; the second end face template and the third end face template are matched through a convex-concave structure.

[0008] As a further technical solution, the side surfaces of the first end face template and the second end face template respectively connected to the side template are both set as inclined surfaces, and the two side surfaces of the side template are also set as inclined surfaces.

[0009] As a further technical solution, a reinforcement component is installed on the end face template.

[0010] As a further technical solution, the reinforcement assembly includes a fixing member and two first wooden beams arranged opposite to each other, the first wooden beams are arranged vertically, the two first wooden beams are located on both sides of the width direction of the end face template, the two first wooden beams are connected by multiple fixing members, and the multiple fixing members are arranged at intervals along the length direction of the first wooden beam.

[0011] As a further technical solution, a support component made of wood and metal materials is installed on the outer side of each side formwork.

[0012] As a further technical solution, each of the support components includes multiple parallel second wooden beams and multiple second steel pipes. A first wooden beam is arranged at the intersection of the end face template and the side template, and the outer side surface of each second wooden beam is attached to the outer side surface of the side template.

[0013] As a further technical solution, it also includes a connecting component, the reinforcement component is fixed to the end face template through the connecting component, and the support component is fixed to the side template through the connecting component.

[0014] As a further technical solution, the connecting assemblies are provided in multiple groups, and the multiple groups of connecting assemblies are arranged at intervals along the length direction of the end face template. Each group of connecting assemblies includes a positioning member and a connecting member for connecting the positioning members. The positioning members include two parallel first steel pipes. The multiple second steel pipes in the supporting assembly are located between the positioning members of the same connecting assembly.

[0015] As a further technical solution, the connecting member includes two retaining rings and a locking bolt, each retaining ring includes a middle connecting portion and arc-shaped portions located at both ends of the connecting portion, and the recessed directions of the two arc-shaped portions are consistent. The two arc-shaped portions of the same retaining ring are respectively and one-to-one clamped on the two first steel pipes of the same positioning member, and the locking bolt is connected to the two connecting portions of the same connecting member.

[0016] The beneficial effects of the above embodiments of the present invention are as follows:

[0017] The present invention provides a formwork device for a local replacement test of a concrete shear wall, the formwork device comprising two side formworks and two end formworks, the two side formworks being arranged in parallel, the two end formworks being located between the two side formworks, the arrangement of the first end formwork, the second end formwork, and the third end formwork in the end formworks ensuring a simple and quick installation with a good fixing effect, and due to the presence of the circular holes, horizontal steel bars can pass through the circular holes without affecting the erection of the formworks; and the circular holes can tightly clamp the horizontal steel bars in the wall, thereby further ensuring that leakage is unlikely to occur at the contact point between the steel bars in the wall and the end formworks during pouring, and at the same time, the presence of the concave-convex structure also ensures the pouring quality of the wall after pouring. The intersection of the side formworks and the end formworks is arranged with an inclined surface, and the two formworks are perpendicular to each other, and the thickness of the end formwork is the thickness of the wall. The end formwork is secured to its outer mating surface with reinforcement components, secured via connectors. Support components are installed on the outer mating surfaces of the side formwork, perpendicular to the end formwork. The joints between the end and side forms are securely fastened with steel nails, ensuring excellent installation. Once secured, the joints between the end and side forms maintain tight contact, preventing grout leakage. The two forms are also smooth and level, preventing mold expansion during pouring. After pouring, the wall exhibits excellent verticality and flatness. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to further illustrate the embodiments of the present invention more clearly, the following briefly introduces the drawings used in the embodiments. The following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope.

[0019] Figure 1This is a schematic front view of the structure of the formwork support for a local replacement test of a concrete shear wall according to an embodiment of the present invention;

[0020] Figure 2 This is a left-side structural schematic diagram of the formwork support for a local replacement test of a concrete shear wall according to an embodiment of the present invention;

[0021] Figure 3 Schematic diagram of the top view of the structure of the formwork support for the local replacement test of the concrete shear wall according to the embodiment of the present invention;

[0022] Figure 4 Schematic diagram of the splicing structure of the side formwork and the end formwork of the formwork support for the partial replacement test of the concrete shear wall according to an embodiment of the present invention;

[0023] Figure 5 A cross-sectional view of the side formwork of the formwork support for the partial replacement test of the concrete shear wall according to an embodiment of the present invention;

[0024] Figure 6 Schematic diagram of the end face formwork splicing portion of the formwork support for the local replacement test of concrete shear wall according to an embodiment of the present invention;

[0025] FIG7( a ) is a cross-sectional view of the first end face formwork of the formwork support for the partial replacement test of the concrete shear wall according to an embodiment of the present invention;

[0026] FIG7( b ) is a cross-sectional view of the third end face formwork of the formwork support for the partial replacement test of the concrete shear wall according to an embodiment of the present invention;

[0027] FIG7( c ) is a cross-sectional view of the second end face formwork of the formwork support for the partial replacement test of the concrete shear wall according to an embodiment of the present invention;

[0028] Figure 8 Schematic diagram of the connector for the formwork support of a local replacement test of a concrete shear wall according to an embodiment of the present invention;

[0029] In the figure: side formwork 1, end formwork 2, reinforcement assembly 3, connection assembly 4, support assembly 5, first end formwork 6, third end formwork 7, second end formwork 8, first wooden square 9, first steel pipe 10, second wooden square 11, second steel pipe 12, retaining ring 13, locking bolt 14, connecting piece 15, fixing piece 16, first concave-convex structure 17, second concave-convex structure 18, third concave-convex structure 19, shear wall vertical steel bars 20, shear wall horizontal steel bars 21, connecting seam 22, rectangular recess 23, rectangular protrusion 24, semicircular recess 25, circular hole 26, connecting part 27, arc-shaped part 28, side formwork inclined surface 29, end formwork inclined surface 30. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be noted that the terms "vertical," "inner side," and "outer side" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships in which the inventive product is typically placed when in use. These terms are intended solely to facilitate and simplify the description of the present invention and are not intended to indicate or imply that the devices or components referred to must have a specific orientation, specific directional structure, or specific operation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and the like are used solely for distinction and should not be construed as indicating or implying relative importance.

[0032] In addition, the term "vertical" does not mean that the component must be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0033] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0034] Example

[0035] Please refer to Figures 1-8 This embodiment provides a formwork device for a partial replacement test of a concrete shear wall, and is used for setting up formwork for the partial replacement test of a concrete shear wall. The formwork device includes a reinforcement assembly 3, a connection assembly 4, a support assembly 5, two oppositely disposed side formworks 1, and an end formwork 2 located between the two side formworks. During actual installation, the side formworks 1 and the end formworks 2 are set on a floor slab or foundation plane, and the side formworks 1 and the end formworks 2 are spliced ​​to form a casting cavity. During pouring, the formwork withstands the impact force of the concrete. After pouring is completed, the formwork can be removed after the concrete solidifies and reaches the required strength.

[0036] The reinforcement component 3 plays the role of assisting in fixing the end face formwork 2. The reinforcement component 3 is installed on the outer plate surface of the end face formwork 2, and then the connection component 4 is installed on the formwork, thereby achieving the fixation of the reinforcement component 3 and the end face formwork 2. After the end face formwork 2 is fixed, the position is accurate, not easy to move, and the casting quality is high.

[0037] Specifically, the reinforcement assembly 3 includes two first wooden squares 9 and fixing members 16 that are relatively arranged. The two first wooden squares 9 are rectangular wooden squares. Each first wooden square 9 includes four side faces and two end faces. The four side faces are all smooth side faces. One of the side faces is attached to the outer plate surface of the end face formwork 2 with a good matching relationship. The two first wooden squares 9 are respectively arranged on both sides of the width direction of the end face formwork 2, that is, in the thickness direction of the concrete shear wall. The two first wooden squares 9 protrude from the corresponding side edges of the end face formwork 2. After the two first wooden squares 9 are firmly installed, the two first wooden squares 9 are connected by using the fixing members 16. The positions of the two first wooden squares 9 are not easy to change, which is convenient for subsequent installation. Furthermore, a plurality of fixing members 16 are provided, and the plurality of fixing members 16 are arranged along the length direction of the first wooden square 9. The connection structure is firm and reliable. Figure 2 As shown, multiple fixings 16 are evenly spaced along the height of the two wooden beams 9, with adjacent fixings 16 spaced a certain distance apart. At the same time, each fixing 16 presses the first wooden beam 9 against the end formwork 2, which can withstand the force exerted by the concrete in the wall on the end formwork 2 and ensure smooth pouring.

[0038] After the reinforcement component 3 is installed, the position of the first wooden square 9 is further positioned using the connection component 4. Two parallel first steel pipes 10 are attached to the other outer side of the first wooden square 9 through the connection piece 15. The two parallel first steel pipes 10 and the connection piece 15 together constitute a group of connection components 4. The first steel pipes 10 used are round tubes, which are easy to process and manufacture, have high strength, and are not easily deformed under stress. There are multiple groups of connection components 4.

[0039] The fixing method of the reinforcement assembly 3 is simple, reliable, and easy to install. During concrete pouring, the widthwise sides of the end formwork 2 are subject to significant impact force, which can easily cause formwork expansion and concrete leakage, resulting in reduced pouring quality and poor wall quality. The two first wooden planks 9 are tightly pressed against the sides of the end formwork 2, increasing the force that the sides of the end formwork 2 can withstand. This means that the junction of the end formwork 2 and the side formwork 1 is less susceptible to formwork expansion, resulting in higher pouring quality.

[0040] Please refer to Figure 2 Since this example is a local replacement test of concrete shear wall, which is different from the on-site construction conditions, it is necessary to pour a part of the wall concrete first. When pouring this part of the wall concrete, the steel bars in the wall, especially the horizontal steel bars 21, cause great difficulties in the erection of the formwork. In order to solve these difficulties, Figure 2 7(a), 7(b) and 7(c), in this example, the end face template 2 is configured to be composed of three parts of templates, namely the first end face template 6 (as shown in FIG7(a)), the second end face template 8 (as shown in FIG7(c)) and the third end face template 7 (as shown in FIG7(b)). The first end face template 6, the second end face template 8 and the third end face template 7 are all smooth templates, which are conducive to improving the casting quality. The first end face template 6 and the second end face template 8 are located on both sides of the wall thickness direction, and the third end face template 7 is located between the first end face template 6 and the second end face template 8. The outer end face of the first end face template 6, that is, the side in contact with the side template 1 is set to an inclined surface. The first end face template 6 is provided on the side in contact with the third end face template 8. A first concave-convex structure 17 is provided. The first concave-convex structure 17 includes a plurality of rectangular recessed portions 23 and a plurality of semicircular recessed portions 25. The outer end surface of the second end face template 8, that is, the side in contact with the side template 1 is set as an inclined surface. A second concave-convex structure 18 is provided on the side in contact with the third end face template 7. The second concave-convex structure 18 includes a plurality of rectangular recessed portions 23 and a plurality of semicircular recessed portions 25. The surfaces of the third end face template 7 in contact with the first end face template 6 and the second end face template 8 are both provided with a third concave-convex structure 19. The third concave-convex structure 19 includes a plurality of rectangular protrusions 24 and a plurality of semicircular recessed portions 25. When setting up the formwork, the multiple rectangular recessed portions 23 in the first concave-convex structure 17 and the multiple rectangular recessed portions 23 in the second concave-convex structure 18 are respectively clamped one by one with the multiple rectangular protrusions 24 in the third concave-convex structure 19. At this time, the multiple semicircular recessed portions 25 in the first concave-convex structure 17 and the multiple semicircular recessed portions 25 in the second concave-convex structure 18 are respectively clamped with the multiple semicircular recessed portions 25 in the third concave-convex structure 19 to form a plurality of circular holes 26. The multiple horizontal steel bars 21 in the concrete shear wall are clamped one by one with the multiple circular holes 26. The presence of the circular holes 26 and the concave-convex structure makes it less likely for leakage to occur at the connection between the steel bars and the formwork when pouring concrete, and the pouring quality of the wall is high.

[0041] Furthermore, the support assembly 5 includes a plurality of parallel second square timbers 11 and a plurality of parallel second steel tubes 12 with equal outer diameters. The second timber squares 11 are rectangular timbers. Each second timber square 11 includes four side faces and two end faces. The four side faces are all smooth sides. One of the side faces is affixed to the outer plate surface of the side template 1. The plurality of second square timbers are arranged along the width direction of the local replacement wall. The material of the second steel tubes 12 used is the same as that of the first steel tubes 10. Each second steel tube 12 is close to the outer side surface of the second square timber 11. The plurality of second square tubes 12 are arranged along the height direction of the wall. At the same time, each second steel tube 12 is between two parallel first steel tubes 10. Each second steel tube 12 is close to the outer peripheral surface of the two parallel first steel tubes 10. At this time, the two parallel first steel tubes 10 tightly fix a second steel tube 12 under the action of the connecting piece 15. When pouring concrete, the concrete force acts on the second square wood 11 through the formwork. The second square wood 11 on both sides of the replacement wall is coordinated with the multiple second steel pipes 12, so that the side formwork 1 is evenly stressed and is less likely to expand. At the same time, a second square wood 11 is set on each side of the side formwork 1, and the two second square woods 11 are on the same horizontal plane as the protruding parts of the first square wood 9. When the side of the side formwork 1 is subjected to the impact force of concrete, it is not easy for a gap to appear at the junction with the end formwork 2, and it is not easy for slurry to leak. The pouring quality is high, the quality of the wall's molding surface is high, and the wall's external angle line is straight, which is convenient for subsequent processing.

[0042] The first steel tubes 10 on different end templates 2 are fixedly connected by connectors 15. Each positioning member includes two first steel tubes 10, which facilitates the installation of the connectors 15. After installation, the force on the connectors 15 is more uniform. The force on the connectors 15 is along their axis, and the connectors 15 are not easily deformed. The fixing effect is good, the position of the template is not easily changed, and the thickness of the wall is uniform. Figure 8 The connecting member 15 includes two retaining rings 13 and a locking bolt 14. Each retaining ring 13 includes a connecting portion 27 and two arc-shaped portions 28. The two arc-shaped portions 28 are located at both ends of the connecting portion 27. The recessed directions of the two arc-shaped portions 28 are the same. The two arc-shaped portions 28 of the same retaining ring 13 are correspondingly connected to the two first steel pipes 10 of the same positioning member. The connecting member 15 and the first steel pipe 10 are tightly matched. The force of the entire formwork support is stable and reliable. The mold expansion phenomenon is not easy to occur during the pouring process, and the pouring quality is high.

[0043] See also Figure 4-Figure 6, the intersection of the side formwork 1 and the end formwork 2 is prone to leakage during pouring, and the quality of the positive corner of the wall after pouring is poor, which increases the cost of subsequent processing. In this embodiment, the side where the side formwork 1 and the end formwork 2 intersect is set to a slope structure, and the side where the end formwork 2 and the side formwork 1 intersect is also set to a slope structure. When installing the formwork, the side formwork slope 29 and the end formwork slope 30 are butted against each other and then fixed with steel nails. With the cooperation of the first square wood 9 and the second square wood 11, the side formwork 1 and the end formwork 2 are highly matched. When pouring concrete, leakage is not likely to occur at the connection seam 22 of the two formworks, and the poured wall has high quality, good integrity and high verticality.

[0044] When using the above-mentioned formwork device to conduct a local replacement test of a concrete shear wall, the specific construction steps are as follows:

[0045] During construction, the horizontal and vertical steel bars in the concrete shear wall are first tied together, and after the steel bars are tied together, the formwork work of the wall begins. Since the formwork device is used for the local replacement test of the concrete shear wall, the first end face formwork, the second end face formwork and the third end face formwork are first assembled and spliced ​​in the wall thickness direction as required. The third end face formwork can be installed first, and after the third end face formwork is stably installed in the wall thickness direction, the first end face formwork and the second end face formwork can be installed. During this installation process, it is necessary to ensure that the concave and convex structures of the first end face formwork, the second end face formwork and the third end face formwork are accurately aligned, and to ensure that the horizontal steel bars in the wall pass through the circular holes formed by the first end face formwork, the second end face formwork and the third end face formwork, so that when pouring concrete, due to the existence of the concave and convex structure and the horizontal steel bars passing through the circular holes, leakage will not occur. After the end face formwork is installed, the side formwork is installed. During installation, it is necessary to ensure that the oblique side of the side formwork is accurately aligned with the oblique side of the first end face formwork and the second end face formwork. After the formwork is firmly fixed and the horizontal and vertical directions of the formwork meet the requirements, use steel nails to fix the connection between the side formwork and the end face formwork. Both the end face formwork and the side formwork are smooth surfaces, so as to ensure that the mold expansion and slurry leakage are not easy to occur during concrete pouring, and it is conducive to ensuring that the wall has good integrity and flatness after pouring. After the end face formwork and the side formwork are installed and stabilized, the reinforcement components at the end face formwork and the support components at the side formwork are installed. With the cooperation of the connection components, the reinforcement components and the support components must ensure that they are tightly attached to the end face formwork and the side formwork respectively during the installation process, thereby further fixing the end face formwork and the side formwork to ensure that the construction quality is optimized.

[0046] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A formwork device for local displacement test of concrete shear wall, comprising two relatively arranged A side template and an end template located between two side templates, wherein the end template is perpendicular to the side templates, characterized in that: Each end face template includes a first end face template located at the side, a second end face template and a third end face template located in the middle. When the first end face template and the third end face template are matched, a hole for the horizontal reinforcement of the concrete shear wall is formed; when the second end face template and the third end face template are matched, a hole for the horizontal reinforcement of the concrete shear wall is formed; A reinforcement assembly is installed on the end face formwork, and a support assembly made of wood and metal materials is installed on the outer side of each side formwork; each support assembly includes a plurality of second wooden squares and a plurality of second steel pipes arranged in parallel, and also includes a connecting assembly, the reinforcement assembly is fixed to the end face formwork via the connecting assembly, and the support assembly is fixed to the side formwork via the connecting assembly; each group of the connecting assemblies includes a positioning member and a connecting member for connecting the positioning members, the positioning member includes two first steel pipes arranged in parallel, and the plurality of second steel pipes in the support assembly are located between the positioning members of the same connecting assembly; The first end face template and the third end face template are matched through a convex-concave structure; the second end face template and the third end face template are matched through a convex-concave structure.

2. The formwork device for local replacement test of concrete shear wall according to claim 1, wherein The characteristic is that the side surfaces of the first end face template and the second end face template respectively connected to the side template are both set as inclined surfaces, and the two side surfaces of the side template are also respectively set as inclined surfaces.

3. The formwork device for local replacement test of concrete shear wall according to claim 1, wherein The characteristic is that the reinforcement component includes a fixing part and two first wooden squares arranged opposite to each other, the first wooden squares are arranged vertically, the two first wooden squares are located on both sides of the width direction of the end face template, the two first wooden squares are connected by multiple fixing parts, and the multiple fixing parts are arranged at intervals along the length direction of the first wooden square.

4. The formwork device for local replacement test of concrete shear wall according to claim 3, characterized in that: A first wooden square is provided at the junction of the end face template and the side template, and the outer side surface of each second wooden square is in contact with the outer side surface of the side template.

5. The formwork device for local replacement test of concrete shear wall according to claim 1, characterized in that: The connection components are provided in multiple groups, and the multiple groups of connection components are arranged at intervals along the length direction of the end face template.

6. The formwork device for local replacement test of concrete shear wall according to claim 5, characterized in that: The connecting piece includes two retaining rings and a locking bolt. Each retaining ring includes a middle connecting portion and arc-shaped portions located at both ends of the connecting portion, and the recessed directions of the two arc-shaped portions are consistent. The two arc-shaped portions of the same retaining ring are respectively and one-to-one clamped on the two first steel pipes of the same positioning piece, and the locking bolt is connected to the two connecting portions of the same connecting piece.

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