A formwork structure and construction method for shear wall in narrow space

Abstract

The present invention discloses a formwork structure and construction method for shear walls in confined spaces. The structure comprises a diagonal brace bottom piece, a diagonal brace middle piece, and a diagonal brace top piece. The diagonal brace bottom piece comprises two angle plates, an intermediate plate, and a diagonal brace. One side of the two angle plates is connected to form an angle. One end of the diagonal brace is connected to the bottom of the angle and located on the angle bisector, while the other end of the diagonal brace is connected to the centerline bottom of the intermediate plate. This invention improves the construction method for shear walls in confined spaces, ensuring worker safety, improving construction efficiency, and guaranteeing project quality.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, in particular to a template structure inside a shear wall in a narrow space and a construction method. Background Art

[0002] Currently, the most common methods for formwork construction are: plywood formwork, assembled large steel formwork, aluminum alloy formwork, composite plastic formwork, steel (aluminum) frame formwork, etc. However, the smoke exhaust shaft formwork in the narrow space of the three-sided shear wall is constructed using conventional methods, which requires manual entry into the narrow space to operate the construction.

[0003] However, for narrow spaces, the operating space is small, the material stacking space is limited, the personnel operating space is limited, and the space is narrow. There are great safety hazards when personnel carry materials vertically in the space, the construction quality cannot be guaranteed, and the construction progress is affected.

[0004] The information disclosed in the above background technology section is only intended to increase the understanding of the overall background of the present invention and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. Summary of the Invention

[0005] In response to the above-mentioned existing defects, the purpose of the present invention is to provide a formwork structure and construction method for shear walls in narrow spaces, which improves the construction method of formwork inside shear walls in narrow spaces, ensures the safety of operators, improves construction efficiency, and ensures project quality.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A formwork structure for a narrow space shear wall, comprising a diagonal brace bottom piece, a diagonal brace middle piece and a diagonal brace top piece, wherein the diagonal brace bottom piece comprises two angle plates, an middle plate and a diagonal brace, one side of the two angle plates are connected to form an angle, one end of the diagonal brace is connected to the bottom of the angle and is located on the angle bisector, and the other end of the diagonal brace is connected to the bottom of the center line of the middle plate; the diagonal brace middle piece comprises two angle plates, an middle plate and a diagonal brace, one side of the two angle plates are connected to form an angle, one end of the diagonal brace is connected to the middle of the angle and is located on the angle bisector, and the other end of the diagonal brace is connected to the middle of the center line of the middle plate; the diagonal brace top piece comprises two angle plates, a middle plate and a diagonal brace, The intermediate plate and a diagonal brace, one side edge of the two angle plates are connected to form an angle, one end of the diagonal brace is connected to the top of the angle and is located on the bisector of the angle, and the other end of the diagonal brace is connected to the top of the center line of the middle plate; when the diagonal brace middle piece is placed above the diagonal brace bottom piece, the middle plate of the diagonal brace middle piece abuts against a angle plate of the diagonal brace bottom piece and are on the same plane, and when the diagonal brace top piece is placed above the diagonal brace middle piece, the middle plate of the diagonal brace top piece abuts against a angle plate of the diagonal brace middle piece and a angle plate of the diagonal brace bottom piece respectively, and the two angle plates of the diagonal brace top piece abut against the middle plate of the diagonal brace middle piece and the middle plate of the diagonal brace bottom piece respectively, and all the angle plates and middle plates form a triangle.

[0008] Furthermore, it also includes a cross brace, which is arranged between the two angle plates.

[0009] Furthermore, the number of the cross braces is three, which are distributed at the lower part, the middle part and the upper part between the two angle plates.

[0010] Furthermore, it also includes an oblique triangular support, the upper end of which is connected to the lower part of the middle plate, and the other end of which is in contact with the horizontal plane.

[0011] Furthermore, it also includes a lifting ring, which is arranged on the top of the intersecting sides of the two angle plates.

[0012] Furthermore, the connection between the corner plate and the middle plate adopts an oblique opening to facilitate demoulding.

[0013] A method for constructing a shear wall internal formwork structure in a narrow space comprises the following steps:

[0014] Step 1: Prefabricate the diagonal brace bottom piece, the diagonal brace middle piece, and the diagonal brace top piece. Each template includes two angle panels, a middle panel, and a diagonal brace. One side of the two angle panels is connected to form an angle. One end of the diagonal brace is connected to the connection of the angle panels and is located on the bisector of the angle. The other end of the diagonal brace is connected to the middle of the middle panel. The three diagonal braces are respectively arranged at the bottom, middle, and top.

[0015] Step 2: Apply release agent to each template, and apply release agent to the corner plate and middle plate of each template;

[0016] Step 3: Tie the steel bars of the three shear walls;

[0017] Step 4: First, hoist the diagonal brace bottom plate template to the predetermined position in the three shear walls, then hoist the diagonal brace middle plate, so that the middle plate of the diagonal brace middle plate abuts against one of the angle plates of the diagonal brace bottom plate and are on the same plane, and the middle plate of the diagonal brace bottom plate abuts against one of the angle plates of the diagonal brace middle plate and are on the same plane. Finally, hoist the diagonal brace top plate, so that the middle plate of the diagonal brace top plate abuts against one of the angle plates of the diagonal brace middle plate and one of the angle plates of the diagonal brace bottom plate, and the two angle plates of the diagonal brace top plate abut against the middle plate of the diagonal brace middle plate and the middle plate of the diagonal brace bottom plate, so that all the angle plates and middle plates form a triangle.

[0018] Step 5: pour concrete on the three shear walls;

[0019] Step 6: Remove the formwork piece by piece, pry the formwork separately, and lift the diagonal brace top piece, diagonal brace middle piece and diagonal brace bottom piece from the shear wall in turn.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] This invention assembles the internal formwork for shear walls in narrow spaces into a three-piece formwork system. Each piece consists of two angle plates, a middle plate, and a diagonal brace. The diagonal braces of the three-piece formwork system are of varying heights. The lowest diagonal brace is constructed first, followed by the middle plate, and finally the top diagonal brace. During construction, workers no longer need to go inside the smoke exhaust shaft; they simply hoist the three-piece formwork system from the floor into the shaft. This improves the internal formwork construction method for shear walls in narrow spaces, ensuring worker safety, improving construction efficiency, and ensuring project quality. The connection between the angle plates and the middle plate can be beveled to facilitate formwork removal. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a three-dimensional structural diagram of a right-angled triangle inner formwork of a narrow space shear wall according to an embodiment of the present invention;

[0023] Figure 2 A top view of a right-angled triangle inner formwork of a narrow space shear wall according to an embodiment of the present invention;

[0024] Figure 3 A top view of an acute-angled triangle inner formwork of a narrow space shear wall according to an embodiment of the present invention;

[0025] Figure 4 This is an exploded view of an acute-angle triangle inner formwork of a narrow space shear wall according to an embodiment of the present invention;

[0026] Figure 5 This is an exploded view of the diagonal bracing plate structure according to an embodiment of the present invention;

[0027] Figure 6 This is an exploded view of the diagonal bracing intermediate piece structure according to an embodiment of the present invention;

[0028] Figure 7 This is an exploded view of the diagonal braced top sheet structure according to an embodiment of the present invention;

[0029] Figure 8 This is a structural diagram of three shear walls according to an embodiment of the present invention.

[0030] In the figure, 1--angle plate; 2--middle plate; 3--diagonal brace; 4--horizontal brace at the base of angle plate; 5--horizontal brace in the middle of angle plate; 6--horizontal brace at the upper part of angle plate; 7-diagonal triangular brace of middle plate; 8-lifting ring; 9--three-sided shear wall; 10-inner formwork. DETAILED DESCRIPTION

[0031] To explain the technical content, objectives, and effects of the present invention in detail, the following embodiments are described in conjunction with the accompanying drawings. In the description of this embodiment, it should be understood that the terms indicating orientation or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this embodiment and simplify the description. They do not indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0032] like Figure 1-4 As shown, a narrow space shear wall template structure is suitable for Figure 8 The three-sided shear wall 9 structure shown in FIG. 1 includes a diagonal bracing bottom piece, a diagonal bracing middle piece and a diagonal bracing top piece. The diagonal bracing bottom piece, as shown in FIG. Figure 5 As shown, it includes two angle plates 1, an intermediate plate 2 and a diagonal brace 3. One side of the two angle plates 1 is connected to form an angle. One end of the diagonal brace 3 is connected to the bottom of the angle and is located on the angle bisector. The other end of the diagonal brace 3 is connected to the centerline bottom of the intermediate plate 2. The intermediate piece of the diagonal brace, as shown Figure 6 As shown, it includes two corner panels 1, an intermediate panel 2 and a diagonal brace 3. One side of the two corner panels 1 is connected to form an angle. One end of the diagonal brace 3 is connected to the middle of the angle and is located on the angle bisector. The other end of the diagonal brace 3 is connected to the middle of the center line of the intermediate panel 2. The diagonal brace top piece, as shown Figure 7As shown, it includes two angle plates 1, an intermediate plate 2 and a diagonal brace 3. One side edge of the two angle plates 1 is connected to form an angle. One end of the diagonal brace 3 is connected to the top of the angle and is located on the bisector of the angle, and the other end of the diagonal brace 3 is connected to the centerline top of the intermediate plate 2. When the diagonal brace intermediate piece is placed above the diagonal brace bottom piece, the intermediate plate 2 of the diagonal brace intermediate piece abuts against a angle plate 1 of the diagonal brace bottom piece and is on the same plane. When the diagonal brace top piece is placed above the diagonal brace intermediate piece, the intermediate plate 2 of the diagonal brace top piece abuts against a angle plate 1 of the diagonal brace intermediate piece and a angle plate 1 of the diagonal brace bottom piece respectively, and the two angle plates 1 of the diagonal brace top piece abut against the intermediate plate 2 of the diagonal brace intermediate piece and the intermediate plate 2 of the diagonal brace bottom piece respectively. All the angle plates 1 and intermediate plates 2 form a triangle.

[0033] The triangle may be an acute triangle, such as Figure 3-4 As shown, it can also be a right triangle, such as Figure 1-2 As shown, or an obtuse triangle, adapted to the triangle shape surrounded by three shear walls. In this embodiment, the triangle is a right triangle, such as Figure 1-2 As shown, Figure 8 The three shear wall structures shown are compatible.

[0034] like Figure 1-4 As shown, as a preferred embodiment of the above embodiment, a cross brace is further included, and the cross brace is arranged between the two angle plates to enhance the rigidity of the template.

[0035] like Figure 1-4 As shown, as a preferred embodiment of the above embodiment, there are three cross braces, which are distributed at the bottom, middle, and top between the two angle plates. They are the angle plate base cross brace 4, the angle plate middle cross brace 5, and the angle plate upper cross brace 6, which are used to prevent concrete leakage at the bottom and enhance the rigidity of the formwork.

[0036] like Figure 1-4 As shown, as a preferred embodiment of the above embodiment, it further includes an intermediate plate oblique triangular support 7, the upper end of which is connected to the lower part of the intermediate plate, and the other end of which is in contact with the horizontal surface, to prevent the bottom concrete from leaking.

[0037] like Figure 1-4 As shown, as a preferred embodiment of the above embodiment, it further includes a lifting ring 8, which is arranged at the top of the intersecting sides of the two angle plates 1 to facilitate lifting construction.

[0038] As a preferred embodiment of the above embodiment, the connection between the corner plate and the middle plate adopts an oblique opening to facilitate demoulding.

[0039] A method for constructing a template structure in a narrow space shear wall, wherein the narrow space three-sided shear wall 9 structure is as follows Figure 8As shown, the following steps are included:

[0040] Step 1: Prefabricate the diagonal brace bottom piece, the diagonal brace middle piece, and the diagonal brace top piece. Each template includes two angle panels 1, an intermediate panel 2, and a diagonal brace 3. One side of the two angle panels 1 is connected to form an angle. One end of the diagonal brace 3 is connected to the connection of the angle panels 1 and is located on the bisector of the angle. The other end of the diagonal brace 3 is connected to the middle of the intermediate panel 2. Three diagonal braces 3 are respectively arranged at the bottom, middle, and top.

[0041] Step 2: Apply release agent to each template, and apply release agent to the corner plate and middle plate of each template;

[0042] Step 3: Tie the steel bars of the three shear walls;

[0043] Step 4: First, hoist the diagonal bracing bottom sheet formwork to the predetermined position in the three shear walls, then hoist the diagonal bracing middle sheet, so that the middle plate 2 of the diagonal bracing middle sheet abuts against one of the angle plates 1 of the diagonal bracing bottom sheet and are on the same plane, and the middle plate 2 of the diagonal bracing bottom sheet abuts against one of the angle plates 1 of the diagonal bracing middle sheet and are on the same plane, and finally hoist the diagonal bracing top sheet, so that the middle plate 2 of the diagonal bracing top sheet abuts against one of the angle plates 1 of the diagonal bracing middle sheet and one of the angle plates 1 of the diagonal bracing bottom sheet, and the two angle plates 1 of the diagonal bracing top sheet abut against the middle plate 2 of the diagonal bracing middle sheet and the middle plate 2 of the diagonal bracing bottom sheet, and all the angle plates 1 and middle plates 2 form a triangle, i.e., forming the inner formwork 10. Figure 1-2 and 8.

[0044] Step 5: pour concrete on the three shear walls;

[0045] Step 6: Remove the formwork piece by piece, pry the formwork separately, and lift the diagonal brace top piece, diagonal brace middle piece and diagonal brace bottom piece from the shear wall in turn.

[0046] This invention assembles the internal formwork for shear walls in narrow spaces into a three-piece formwork system. Each piece consists of two angle plates, a middle plate, and a diagonal brace. The diagonal braces of the three-piece formwork system are of varying heights. The lowest diagonal brace is constructed first, followed by the middle plate, and finally the top diagonal brace. During construction, workers no longer need to go inside the smoke exhaust shaft; they simply hoist the three-piece formwork system from the floor into the shaft. This improves the internal formwork construction method for shear walls in narrow spaces, ensuring worker safety, improving construction efficiency, and ensuring project quality. The connection between the angle plates and the middle plate can be beveled to facilitate formwork removal.

[0047] Although the present invention has been described in detail above using specific embodiments, it will be apparent to those skilled in the art that modifications or improvements may be made based on the present invention. Therefore, such modifications or improvements, which do not depart from the spirit of the present invention, are intended to fall within the scope of protection claimed herein.

Claims

1. A narrow space shear wall internal formwork structure, characterized by: It is assembled from a three-piece formwork system, which includes a diagonal brace bottom piece, a diagonal brace middle piece and a diagonal brace top piece. The diagonal brace bottom piece includes two angle plates, an middle plate and a diagonal brace. One side of the two angle plates is connected to form an angle. One end of the diagonal brace is connected to the bottom of the angle and is located on the angle bisector, and the other end of the diagonal brace is connected to the bottom of the center line of the middle plate; the diagonal brace middle piece includes two angle plates, an middle plate and a diagonal brace. One side of the two angle plates is connected to form an angle. One end of the diagonal brace is connected to the middle of the angle and is located on the angle bisector, and the other end of the diagonal brace is connected to the middle of the center line of the middle plate; the diagonal brace top piece includes two angle plates, an middle plate and a diagonal brace. The middle plate and a diagonal brace, one side edge of the two angle plates are connected to form an angle, one end of the diagonal brace is connected to the top of the angle and is located on the bisector of the angle, and the other end of the diagonal brace is connected to the centerline top of the middle plate; when the diagonal brace middle piece is placed above the diagonal brace bottom piece, the middle plate of the diagonal brace middle piece abuts against a angle plate of the diagonal brace bottom piece and are on the same plane, and when the diagonal brace top piece is placed above the diagonal brace middle piece, the middle plate of the diagonal brace top piece abuts against a angle plate of the diagonal brace middle piece and a angle plate of the diagonal brace bottom piece respectively, and the two angle plates of the diagonal brace top piece abut against the middle plate of the diagonal brace middle piece and the middle plate of the diagonal brace bottom piece respectively, and all the angle plates and middle plates form a triangle.

2. The narrow space shear wall internal formwork structure according to claim 1 is characterized by: The utility model further comprises a transverse brace, wherein the transverse brace is arranged between the two angle plates.

3. The narrow space shear wall internal formwork structure according to claim 2 is characterized by: There are three cross braces, which are distributed at the lower part, the middle part and the upper part between the two angle plates.

4. The narrow space shear wall internal formwork structure according to claim 1 is characterized by: It also includes a lifting ring, which is arranged on the top of the intersecting sides of the two angle plates.

5. The narrow space shear wall internal formwork structure according to claim 1 is characterized by: It also includes an oblique triangular support, the upper end of which is connected to the lower part of the middle plate, and the other end of which is in contact with the horizontal plane.

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