Concrete formwork structure for secondary structure constructional column construction

Abstract

The concrete formwork structure comprises a first concrete formwork, a second concrete formwork, a third concrete formwork and a fourth concrete formwork, the section of a cavity formed after the fourth concrete formwork and the third concrete formwork are spliced is in a convex shape, a through hole is formed in the upper wall of the first concrete formwork, a fixing block is installed in the through hole in an inserted mode, and a through hole is formed in the lower wall of the first concrete formwork. A fixing block is arranged on the first concrete mold shell, a positioning pin is installed in an inner cavity of the fixing block in a sliding mode, positioning holes are formed in the upper side wall and the lower side wall of the second concrete mold shell, the upper side wall and the lower side wall of the third concrete mold shell and the upper side wall and the lower side wall of the fourth concrete mold shell correspondingly, and the positioning pin can be installed in the positioning holes in an inserted mode. When the first concrete mold shell is piled above the second concrete mold shell, the third concrete mold shell and the fourth concrete mold shell, the first concrete mold shell can be positioned through cooperation of the positioning pins and the positioning holes, the accuracy and stability of connection are guaranteed, and the situation that the final forming effect of a constructional column is affected due to the fact that the first concrete mold shell deflects during piling is avoided.

Description

Technical Field

[0001] This patent relates to the field of structural column construction technology, specifically a concrete formwork structure for secondary structural column construction. Background Technology

[0002] In construction projects, it is usually necessary to set up structural columns during the wall construction process. The setting of structural columns can effectively improve the integrity of the wall and enhance its seismic fortification performance.

[0003] Traditionally, structural columns are constructed by building the wall to be built, then supporting the formwork at the location of the structural column, pouring concrete, and removing the formwork after the concrete has set, thus forming a complete structural column.

[0004] However, the traditional process of erecting and removing formwork for structural columns is time-consuming and labor-intensive, extending the construction period. Currently, the commonly used structural columns are formed by installing hollow precast masonry slabs at the location of the structural column, reinforcing steel bars, and then pouring concrete into the cavity of the precast masonry slabs to form a complete structural column. This reduces the steps of erecting and removing formwork, effectively saving construction time and improving construction efficiency.

[0005] In a formwork-free structural column proposed in application number CN202122619300.6, a second structural column block is set above the first structural column block to form a toothed joint, which facilitates connection with the external masonry.

[0006] However, the document does not specify a positioning structure between the first and second structural column blocks, which can easily lead to errors during their splicing and installation, affecting the final forming effect of the structural column. Utility Model Content

[0007] The purpose of this patent is to provide a concrete formwork structure for the construction of secondary structural columns, so as to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, this patent provides the following technical solution: a concrete formwork structure for the construction of secondary structural columns, comprising a first concrete formwork, a second concrete formwork, a third concrete formwork, and a fourth concrete formwork. The cross-sections of the first, second, and third concrete formworks are all U-shaped. The cross-section of the cavity formed by splicing the fourth and third concrete formworks is convex. The cross-section of the cavity formed by splicing two second concrete formworks is L-shaped. The cross-section of the cavity formed by splicing four third concrete formworks is cross-shaped.

[0009] The upper wall of the first concrete formwork shell has a through hole, a fixing block is inserted into the through hole, and a positioning pin is slidably installed in the inner cavity of the fixing block. The two ends of the positioning pin pass through the upper and lower side walls of the fixing block, respectively.

[0010] The upper and lower side walls of the second, third, and fourth concrete formwork shells are provided with positioning holes, and the positioning pins can be inserted into the positioning holes.

[0011] Preferably, the upper wall of the fixing block is provided with a sliding groove, the side wall of the fixing block is provided with a threaded hole, the threaded hole is connected to the sliding groove, the positioning pin is slidably installed in the sliding groove, a bolt is screwed into the threaded hole, and one end of the bolt located in the sliding groove is rotatably installed on the side wall of the positioning pin.

[0012] Preferably, the first concrete formwork, the second concrete formwork, the third concrete formwork, and the fourth concrete formwork are all made of poured concrete.

[0013] Preferably, there are four fixing blocks, which are respectively located at the four corners of the first concrete formwork.

[0014] Preferably, both the positioning pin and the positioning hole have square cross-sections. The side wall of the positioning pin has a rotating hole, and the bolt is inserted into the rotating hole. A limit block is installed on the outer side of the end of the bolt located in the rotating hole.

[0015] Preferably, it also includes a top support rod, which includes a cylinder, a screw rod and a top plate. The side wall of the cylinder is fitted with the inner side wall of the first concrete formwork shell. The inner side wall of the cylinder is provided with an internal thread. The screw rod is installed in the inner cavity of the cylinder by rotating the screw rod. The top plate is installed at one end of the screw rod located on the outside of the cylinder. The top plate can be fitted with the external reinforcing cage.

[0016] Compared with existing technologies, the beneficial effects of this patent are:

[0017] This device, by setting a fixing block and a positioning pin on its first concrete formwork, enables the first concrete formwork to be positioned by the cooperation between the positioning pin and the positioning hole when the first concrete formwork is stacked on top of the second, third and fourth concrete formworks. This ensures the accuracy and stability of the connection and prevents the first concrete formwork from tilting during stacking, which would affect the final forming effect of the structural column.

[0018] In addition, this device also has a top support rod installed on the inner side of the first concrete formwork, which enables the steel cage to be positioned by the top support rod, so as to avoid the steel cage from tilting during the later pouring of concrete. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the first concrete formwork structure of this patent.

[0020] Figure 2 This is a schematic diagram of the second concrete formwork structure of this patent.

[0021] Figure 3 This is a schematic diagram of the third concrete formwork structure of this patent.

[0022] Figure 4 This is a schematic diagram of the fourth concrete formwork structure of this patent.

[0023] Figure 5 This is a schematic diagram of the structure after the first and second concrete mold shells of this patent are spliced ​​together.

[0024] Figure 6 This is a schematic diagram of the first structure after the first and third concrete mold shells of this patent are spliced ​​together.

[0025] Figure 7 This is a schematic diagram of the second structure after the first and third concrete mold shells of this patent are spliced ​​together.

[0026] Figure 8 This is a schematic diagram of the structure after the first and fourth concrete mold shells of this patent are spliced ​​together.

[0027] Figure 9 This is a schematic diagram of the cross-sectional structure of the fixing block in this patent.

[0028] In the figure: 1 First concrete formwork, 2 Second concrete formwork, 3 Third concrete formwork, 4 Fourth concrete formwork, 5 Through hole, 6 Fixing block, 7 Positioning pin, 8 Positioning hole, 9 Sliding groove, 10 Threaded hole, 11 Bolt, 12 Rotating hole, 13 Limiting block, 14 Top holding rod, 141 Cylinder, 142 Screw, 143 Top plate. Detailed Implementation

[0029] The technical solutions of this patent embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this patent, and not all of them. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0030] Please see Figures 1-9 This patent provides a technical solution: a concrete formwork structure for the construction of secondary structural columns, including a first concrete formwork 1, a second concrete formwork 2, a third concrete formwork 3 and a fourth concrete formwork 4. The cross-sections of the first concrete formwork 1, the second concrete formwork 2 and the third concrete formwork 3 are all U-shaped. The cross-section of the cavity after the fourth concrete formwork 4 and the third concrete formwork 3 are spliced ​​is convex. The cross-section of the cavity after the two second concrete formwork 2 are spliced ​​is L-shaped. The cross-section of the cavity after the four third concrete formwork 3 are spliced ​​is cross-shaped.

[0031] This article describes four types of concrete formwork that can be combined in various ways to make them suitable for the construction of structural columns in straight walls, T-shaped walls, corner walls, and cross walls. The concrete formwork is built simultaneously with the wall, which has the advantages of fast construction speed and no need to remove the formwork later.

[0032] See appendix Figure 5 Two second concrete formwork shells 2 are joined together to form an L-shaped cavity, which is suitable for the construction of structural columns in corner walls. Then, a first concrete formwork shell 1 is placed on top of the two second concrete formwork shells 2 to form a toothed joint, which is connected to the external masonry.

[0033] See appendix Figure 6 A third concrete formwork 3 is vertically spliced ​​with a first concrete formwork 1, wherein the first concrete formwork 1 is set in the middle of the third concrete formwork 3 to form a toothed joint, which is connected to the external masonry and is suitable for the construction of structural columns of straight walls.

[0034] See appendix Figure 7 Four third concrete formwork shells 3 are connected to each other, so that the cavity formed by the four shells is cross-shaped, which is suitable for the construction of structural columns of cross walls. Then, a first concrete formwork shell 1 is placed on top of the four third concrete formwork shells 3 to form toothed joints and connect with the external masonry.

[0035] See appendix Figure 8 A fourth concrete formwork 4 and a third concrete formwork 3 are joined together to form a T-shaped cavity, which is suitable for the construction of structural columns of T-shaped walls. Then, a first concrete formwork 1 is placed on top of the fourth concrete formwork 4 to form a toothed joint, which is connected to the external masonry.

[0036] The upper wall of the first concrete formwork 1 has a through hole 5, a fixing block 6 is inserted into the through hole 5, and a positioning pin 7 is slidably installed in the inner cavity of the fixing block 6. The two ends of the positioning pin 7 pass through the upper and lower side walls of the fixing block 6 respectively.

[0037] In order to make the connection between the first concrete formwork 1 and the second concrete formwork 2, and the third concrete formwork 3 and the fourth concrete formwork 4 more stable and accurate, this device is equipped with a fixing block 6 and a positioning pin 7 on the first concrete formwork 1, so that the first concrete formwork 1 can be positioned by the cooperation between the positioning pin 7 and the positioning hole 8.

[0038] The upper and lower side walls of the second concrete formwork 2, the third concrete formwork 3 and the fourth concrete formwork 4 are all provided with positioning holes 8, and positioning pins 7 can be inserted into the positioning holes 8.

[0039] The location of the positioning hole 8 mentioned in this article is shown in the attached figure. Figures 2-4 As shown in the image.

[0040] Specifically, the upper wall of the fixing block 6 is provided with a sliding groove 9, and the side wall of the fixing block 6 is provided with a threaded hole 10. The threaded hole 10 is connected to the sliding groove 9. The positioning pin 7 is slidably installed in the sliding groove 9. A bolt 11 is screwed into the threaded hole 10. One end of the bolt 11 located in the sliding groove 9 is rotatably installed on the side wall of the positioning pin 7.

[0041] Since the first concrete formwork 1, the second concrete formwork 2, the third concrete formwork 3, and the fourth concrete formwork 4 in this paper are all made of concrete, the positions of their through holes 5 and positioning holes 8 are prone to some slight deviations. Therefore, the positioning pins 7 on the fixing block 6 are made movable. When assembling the first concrete formwork 1, if the positioning pins 7 cannot be inserted into the positioning holes 8 due to errors, the position of the positioning pins 7 can be adjusted by rotating the bolts 11, thereby completing the assembly of the first concrete formwork 1.

[0042] Specifically, the first concrete formwork 1, the second concrete formwork 2, the third concrete formwork 3, and the fourth concrete formwork 4 are all made of poured concrete.

[0043] Specifically, there are four fixing blocks 6, which are respectively set at the four corners of the first concrete formwork 1.

[0044] Specifically, both the positioning pin 7 and the positioning hole 8 have square cross sections. The side wall of the positioning pin 7 is provided with a rotating hole 12. The bolt 11 is inserted into the rotating hole 12. A limit block 13 is installed on the outer side of the end of the bolt 11 located in the rotating hole 12.

[0045] Because of the setting of the rotating hole 12 and the limiting block 13, when the bolt 11 is rotated, the positioning pin 7 can only move horizontally and will not rotate with the bolt 11.

[0046] Specifically, it also includes a top support rod 14, which includes a cylinder 141, a screw rod 142 and a top plate 143. The side wall of the cylinder 141 is fitted with the inner side wall of the first concrete formwork 1. The inner side wall of the cylinder 141 is provided with internal threads. The screw rod 142 is installed in the inner cavity of the cylinder 141 by rotating the screw. The top plate 143 is installed at one end of the screw rod 142 located outside the cylinder 141. The top plate 143 can be fitted with the external reinforcing cage.

[0047] The length of the top support rod 14 can be adjusted by rotating the screw 142, so that it can be adjusted according to the distance between the first concrete formwork 1 and the reinforcing cage. The top support rod 14 is used to position the reinforcing cage to ensure that the reinforcing cage will not be tilted when pouring concrete later.

[0048] Working principle: When constructing a straight wall structural column, the third concrete formwork 3 is built on the outside of the reinforcing cage, and the two sides of the third concrete formwork 3 are connected to the external masonry. Then, through the cooperation between the positioning pin 7 on the first concrete formwork 1 and the positioning hole 8 on the third concrete formwork 3, the first concrete formwork 1 is installed on top of the third concrete formwork 3, and the two sides of the first concrete formwork 1 are also connected to the external masonry. Then, the top support rod 14 is erected between the first concrete formwork 1 and the reinforcing cage to complete the positioning of the reinforcing cage. Then, the third concrete formwork 3 and the first concrete formwork 1 are alternately built upward to complete the construction of the structural column concrete formwork. At this time, the cavities inside the first concrete formwork 1 and the third concrete formwork 3 are closed by the external masonry. Later, concrete is directly poured into the cavity, and the construction of the straight wall structural column is completed after the concrete dries.

[0049] During the construction of the corner wall structural column, two second concrete formwork shells 2 are joined together to form an L-shaped cavity. At this time, the reinforcing cage is located inside the cavity formed by the two second concrete formwork shells 2, and both second concrete formwork shells 2 are connected to the external masonry. Then, through the cooperation between the positioning pin 7 on the first concrete formwork shell 1 and the positioning hole 8 on the second concrete formwork shell 2, the first concrete formwork shell 1 is installed on top of the second concrete formwork shell 2. The two sides of the first concrete formwork shell 1 are also connected to the external masonry. Then, the top support rod 14 is erected between the first concrete formwork shell 1 and the reinforcing cage to complete the positioning of the reinforcing cage. Then, a set of second concrete formwork shells 2 and first concrete formwork shells 1 are alternately built upward to complete the construction of the structural column concrete formwork. At this time, the cavity inside the first concrete formwork shell 1 and the second concrete formwork shell 2 is closed by the external masonry. Later, concrete is directly poured into the cavity, and the construction of the corner wall structural column is completed after the concrete dries.

[0050] During the construction of the cross-shaped structural column, four third concrete formwork shells 3 are joined together to form a cross-shaped cavity. The reinforcing cage is located inside the cavity formed by the four third concrete formwork shells 3, and all four third concrete formwork shells 3 are connected to the external masonry. Then, through the cooperation between the positioning pin 7 on the first concrete formwork shell 1 and the positioning hole 8 on the third concrete formwork shell 3, the first concrete formwork shell 1 is installed on top of the third concrete formwork shell 3. The two sides of the first concrete formwork shell 1 are also connected to the external masonry. Then, the top support rod 14 is erected between the first concrete formwork shell 1 and the reinforcing cage to complete the positioning of the reinforcing cage. Then, the four third concrete formwork shells 3 and the first concrete formwork shell 1 are alternately built upward to complete the construction of the structural column concrete formwork. At this time, the cavity inside the first concrete formwork shell 1 and the third concrete formwork shell 3 is closed by the external masonry. Later, concrete is poured directly into the cavity, and the construction of the cross-shaped structural column is completed after the concrete dries.

[0051] During the construction of the T-shaped structural column, the fourth concrete formwork 4 and the third concrete formwork 3 are spliced ​​together to form a T-shaped cavity. The reinforcing cage is located in this T-shaped cavity, and both the fourth concrete formwork 4 and the third concrete formwork 3 are connected to the external masonry. Then, through the cooperation between the positioning pin 7 on the first concrete formwork 1 and the positioning hole 8 on the fourth concrete formwork 4, the first concrete formwork 1 is installed on top of the fourth concrete formwork 4. The two sides of the first concrete formwork 1 are also connected to the external masonry. Then, the top support rod 14 is erected between the first concrete formwork 1 and the reinforcing cage to complete the positioning of the reinforcing cage. Then, the combination of the fourth concrete formwork 4 and the third concrete formwork 3 is alternately built upwards with the first concrete formwork 1 to complete the construction of the structural column concrete formwork. At this time, the inner cavity of the combination of the first concrete formwork 1, the fourth concrete formwork 4 and the third concrete formwork 3 is closed by the external masonry. Later, concrete is directly poured into the cavity, and the construction of the T-shaped structural column is completed after the concrete dries.

[0052] It will be apparent to those skilled in the art that this patent is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this patent. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this patent is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this patent. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0053] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A concrete formwork structure for the construction of secondary structural columns, comprising a first concrete formwork (1), a second concrete formwork (2), a third concrete formwork (3), and a fourth concrete formwork (4), characterized in that: The cross-sections of the first concrete formwork (1), the second concrete formwork (2) and the third concrete formwork (3) are all in a U-shape. The cross-section of the cavity after the fourth concrete formwork (4) is spliced with the third concrete formwork (3) is in a convex shape. The cross-section of the cavity after two second concrete formworks (2) are spliced is in an L-shape. The cross-section of the cavity after four third concrete formworks (3) are spliced is in a cross shape; A through hole (5) is opened on the upper wall of the first concrete formwork (1). A fixing block (6) is inserted and installed in the through hole (5). A positioning pin (7) is slidably installed in the inner cavity of the fixing block (6). Both ends of the positioning pin (7) penetrate through the upper and lower side walls of the fixing block (6) respectively; Positioning holes (8) are opened on the upper and lower side walls of the second concrete formwork (2), the third concrete formwork (3) and the fourth concrete formwork (4). The positioning pin (7) can be inserted and installed in the positioning hole (8).

2. The concrete formwork structure for secondary structural columns according to claim 1, characterized in that: A sliding groove (9) is opened on the upper wall of the fixing block (6). A threaded hole (10) is opened on the side wall of the fixing block (6). The threaded hole (10) is communicated with the sliding groove (9). The positioning pin (7) is slidably installed in the sliding groove (9). A bolt (11) is screwed into the threaded hole (10). One end of the bolt (11) located in the sliding groove (9) is rotatably installed on the side wall of the positioning pin (7).

3. A concrete formwork structure for the construction of secondary structural columns according to claim 1, characterized in that: The first concrete formwork (1), the second concrete formwork (2), the third concrete formwork (3) and the fourth concrete formwork (4) are all formed by concrete pouring.

4. A concrete formwork structure for the construction of secondary structural columns according to claim 1, characterized in that: There are four fixing blocks (6) in total. The four fixing blocks (6) are respectively arranged at the four corners of the first concrete formwork (1).

5. A concrete formwork structure for the construction of secondary structural columns according to claim 2, characterized in that: The cross-sections of the positioning pin (7) and the positioning hole (8) are both square. A rotating hole (12) is opened on the side wall of the positioning pin (7). The bolt (11) is inserted and installed in the rotating hole (12). A limiting block (13) is installed on the outer side of one end of the bolt (11) located in the rotating hole (12).

6. A concrete formwork structure for the construction of secondary structural columns according to claim 1, characterized in that: It further includes a supporting rod (14). The supporting rod (14) includes a cylinder body (14-1), a screw rod (14-2) and a top plate (14-3). The side wall of the cylinder body (14-1) is in contact with the inner side wall of the first concrete formwork (1). The inner side wall of the cylinder body (a) is provided with internal threads. The screw rod (14-2) is screwed and installed in the inner cavity of the cylinder body (14-1) by threads. One end of the screw rod (14-2) located outside the cylinder body (14-1) is installed with a top plate (14-3). The top plate (14-3) can be in contact with an external steel reinforcement cage.

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