Formwork structure in shear wall in narrow space and construction method

Abstract

The invention discloses a narrow space shear wall inner formwork structure and a construction method.The narrow space shear wall inner formwork 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 corner plates, a middle plate and a diagonal brace, one side edges of the two corner plates are connected, an included angle is formed, and the other side edges of the two corner plates are connected; one end of the diagonal brace is connected with the bottom of the included angle and located on the bisector of the included angle, and the other end of the diagonal brace is connected with the bottom of the center line of the middle plate. The construction mode of the inner formwork of the shear wall in the narrow space is improved, the safety of operators is guaranteed, the construction efficiency is improved, and the engineering quality is guaranteed.

Description

Technical Field

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

[0002] At present, the most common methods of 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 operating space for personnel 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 acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Summary of the invention

[0005] In view of the above-mentioned existing defects, the purpose of the present invention is to provide a narrow space shear wall internal formwork structure and construction method, improve the narrow space shear wall internal formwork construction method, ensure the safety of operators, improve construction efficiency, and ensure 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, a 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 blocks, a 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 blocks, a 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 An 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 intermediate plate; when the diagonal brace intermediate plate is placed above the diagonal brace bottom plate, the middle plate of the diagonal brace intermediate plate abuts against a angle plate of the diagonal brace bottom plate and is on the same plane, and when the diagonal brace top plate is placed above the diagonal brace intermediate plate, the middle plate of the diagonal brace top plate abuts against a angle plate of the diagonal brace intermediate plate and a angle plate of the diagonal brace bottom plate respectively, and the two angle plates of the diagonal brace top plate abut against the middle plate of the diagonal brace intermediate plate and the middle plate of the diagonal brace bottom plate respectively, and all the angle plates and the middle plates form a triangle.

[0008] Furthermore, it also includes a cross brace, which is arranged between two corner 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 angle plate and the middle plate is opened with an oblique opening, which is convenient for demoulding.

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

[0014] Step 1: prefabricate a diagonal brace bottom sheet, a diagonal brace middle sheet and a diagonal brace top sheet, each template comprises two angle plates, an 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 angle plate connection and is located on the angle bisector of the angle, and the other end of the diagonal brace is connected to the middle of the intermediate plate; three diagonal braces are respectively arranged at the bottom, the middle and the top;

[0015] Step 2: Apply a release agent to each template, and apply the release agent to the corner plate and the 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 sheet template to the predetermined position in the three shear walls, then hoist the diagonal brace middle sheet, so that the middle plate of the diagonal brace middle sheet abuts against one angle plate of the diagonal brace bottom sheet and is on the same plane, and the middle plate of the diagonal brace bottom sheet abuts against one angle plate of the diagonal brace middle sheet and is on the same plane, and finally hoist the diagonal brace top sheet, so that the middle plate of the diagonal brace top sheet abuts against one angle plate of the diagonal brace middle sheet and one angle plate of the diagonal brace bottom sheet respectively, and the two angle plates of the diagonal brace top sheet abut against the middle plate of the diagonal brace middle sheet and the middle plate of the diagonal brace bottom sheet respectively, and all the angle plates and middle plates form a triangle;

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

[0019] Step six: 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] The present invention assembles the internal formwork of the narrow space shear wall into three-piece formwork systems, each of which has two angle plates, a middle plate and a diagonal brace. The diagonal braces of the three-piece formwork system are of different heights. The lowest piece of the diagonal brace is constructed first, then the middle piece of the diagonal brace is constructed, and finally the uppermost piece of the diagonal brace is constructed. During construction, there is no need for construction workers to go to the smoke exhaust shaft for construction. It is only necessary to hoist the three-piece formwork system into the shaft on the floor. The construction method of the internal formwork of the narrow space shear wall is improved, thereby ensuring the safety of the operating workers, improving the construction efficiency, and ensuring the quality of the project. The connection between the angle plate and the middle plate can be in the form of an oblique mouth, which is convenient for demoulding. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 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-angle triangle inner formwork of a narrow space shear wall according to an embodiment of the present invention;

[0025] Figure 4 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 An exploded view of the diagonal brace bottom sheet structure according to an embodiment of the present invention;

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

[0028] Figure 7 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 root 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] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in combination with the embodiments and accompanying drawings. In the description of this embodiment, it should be understood that the terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, which are only for the convenience of describing this embodiment and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0032] like Figure 1-4 As shown, a narrow space shear wall internal formwork structure is suitable for Figure 8 The three-sided shear wall 9 structure shown in the figure comprises a diagonal brace bottom sheet, a diagonal brace middle sheet and a diagonal brace top sheet. Figure 5 As shown, it includes two angle plates 1, a middle 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 bisector of the angle. The other end of the diagonal brace 3 is connected to the bottom of the middle plate 2. The middle piece of the diagonal brace, as shown Figure 6 As shown, it includes two corner blocks 1, a middle plate 2 and a diagonal brace 3. One side of the two corner plates 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 bisector of the angle. The other end of the diagonal brace 3 is connected to the middle of the center line of the middle plate 2. The diagonal brace top plate, as shown in FIG. Figure 7As shown, it includes two corner blocks 1, a middle plate 2 and a diagonal brace 3, one side edges of the two corner plates 1 are 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 middle plate 2; when the diagonal brace middle piece is placed above the diagonal brace bottom piece, the middle plate 2 of the diagonal brace middle piece abuts against a corner plate 1 of the diagonal brace bottom piece and is on the same plane, and when the diagonal brace top piece is placed above the diagonal brace middle piece, the middle plate 2 of the diagonal brace top piece abuts against a corner plate 1 of the diagonal brace middle piece and a corner plate 1 of the diagonal brace bottom piece respectively, and the two corner plates 1 of the diagonal brace top piece abut against the middle plate 2 of the diagonal brace middle piece and the middle plate 2 of the diagonal brace bottom piece respectively, and all the corner plates 1 and middle 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, which is compatible with 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, it also includes a cross brace, which is arranged between 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, the number of the cross braces is three, which are distributed in the lower, middle and upper parts between the two angle plates. They are the angle plate root cross brace 4, the angle plate middle cross brace 5 and the angle plate upper cross brace 6, which are used to prevent the bottom concrete from leaking and to enhance the rigidity of the formwork.

[0036] like Figure 1-4 As shown, as a preferred embodiment of the above embodiment, it also 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, so as to prevent the bottom concrete from leaking.

[0037] like Figure 1-4 As shown, as a preferred embodiment of the above embodiment, it also 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 shear wall internal formwork structure in a narrow space, wherein the shear walls on three sides of the narrow space have a structure as shown in FIG. Figure 8As shown, the following steps are included:

[0040] Step 1: prefabricate the diagonal brace bottom sheet, the diagonal brace middle sheet and the diagonal brace top sheet. Each template 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 connection of the angle plates 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 plate 2. Three diagonal braces 3 are respectively arranged at the bottom, the middle and the top.

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

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

[0043] Step 4: first hoist the diagonal brace bottom sheet template to the predetermined position in the three shear walls, then hoist the diagonal brace middle sheet, so that the middle plate 2 of the diagonal brace middle sheet abuts against an angle plate 1 of the diagonal brace bottom sheet and is on the same plane, and the middle plate 2 of the diagonal brace bottom sheet abuts against an angle plate 1 of the diagonal brace middle sheet and is on the same plane, and finally hoist the diagonal brace top sheet, so that the middle plate 2 of the diagonal brace top sheet abuts against an angle plate 1 of the diagonal brace middle sheet and an angle plate 1 of the diagonal brace bottom sheet respectively, and the two angle plates 1 of the diagonal brace top sheet abut against the middle plate 2 of the diagonal brace middle sheet and the middle plate 2 of the diagonal brace bottom sheet respectively, and all the angle plates 1 and the middle plates 2 form a triangle, that is, forming the inner template 10, as shown in FIG. Figure 1-2 and 8.

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

[0045] Step six: 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] The present invention assembles the internal formwork of the narrow space shear wall into three-piece formwork systems, each of which has two angle plates, a middle plate and a diagonal brace. The diagonal braces of the three-piece formwork system are of different heights. The lowest piece of the diagonal brace is constructed first, then the middle piece of the diagonal brace is constructed, and finally the uppermost piece of the diagonal brace is constructed. During construction, there is no need for construction workers to go to the smoke exhaust shaft for construction. It is only necessary to hoist the three-piece formwork system into the shaft on the floor. The construction method of the internal formwork of the narrow space shear wall is improved, thereby ensuring the safety of the operating workers, improving the construction efficiency, and ensuring the quality of the project. The connection between the angle plate and the middle plate can be in the form of an oblique mouth, which is convenient for demoulding.

[0047] Although the present invention has been described in detail above with specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.

Claims

1. A narrow space shear wall internal formwork structure, characterized by: The invention comprises 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 blocks, 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 blocks, an middle plate and a diagonal brace , one side edge of the two angle plates is 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 middle piece of the diagonal brace is placed on top of the bottom piece of the diagonal brace, the middle plate of the middle piece of the diagonal brace abuts against a angle plate of the bottom piece of the diagonal brace and is on the same plane, and when the top piece of the diagonal brace is placed on top of the middle piece of the diagonal brace, the middle plate of the top piece of the diagonal brace abuts against a angle plate of the middle piece of the diagonal brace and a angle plate of the bottom piece, respectively, and the two angle plates of the top piece of the diagonal brace abut against the middle plate of the middle piece of the diagonal brace and the middle plate of the bottom piece, respectively, and all the angle plates and middle plates form a triangle.

2. According to claim 1, the narrow space shear wall internal formwork structure is characterized by: Also included is a cross brace, which is arranged between the two corner panels.

3. According to claim 2, the narrow space shear wall internal formwork structure is characterized by: 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.

4. According to claim 1, the narrow space shear wall internal formwork structure 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. According to claim 1, the narrow space shear wall internal formwork structure 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.

6. According to claim 1, the narrow space shear wall internal formwork structure is characterized by: The corner plate and the middle plate are connected at an angle opening.

7. A method for constructing a formwork structure in a narrow space shear wall, characterized in that: The following steps are involved: Step 1: prefabricate a diagonal brace bottom sheet, a diagonal brace middle sheet and a diagonal brace top sheet, each template comprises two angle plates, an 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 angle plate connection and is located on the angle bisector of the angle, and the other end of the diagonal brace is connected to the middle of the intermediate plate; three diagonal braces are respectively arranged at the bottom, the middle and the top; Step 2: Apply a release agent to each template, and apply the release agent to the corner plate and the middle plate of each template; Step 3: Tie the steel bars of the three shear walls; Step 4: first hoist the diagonal brace bottom sheet template to the predetermined position in the three shear walls, then hoist the diagonal brace middle sheet, so that the middle plate of the diagonal brace middle sheet abuts against one angle plate of the diagonal brace bottom sheet and is on the same plane, and the middle plate of the diagonal brace bottom sheet abuts against one angle plate of the diagonal brace middle sheet and is on the same plane, and finally hoist the diagonal brace top sheet, so that the middle plate of the diagonal brace top sheet abuts against one angle plate of the diagonal brace middle sheet and one angle plate of the diagonal brace bottom sheet respectively, and the two angle plates of the diagonal brace top sheet abut against the middle plate of the diagonal brace middle sheet and the middle plate of the diagonal brace bottom sheet respectively, and all the angle plates and middle plates form a triangle; Step 5: pour concrete on three shear walls; Step six: 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.

Images