Arc-shaped wall formwork structure

Abstract

The utility model discloses a circular-arc-shaped wall formwork structure which comprises two layers of circular-arc-shaped wall formworks, end formworks arranged at the two ends of the circular-arc-shaped wall formworks and opposite-pull screws, and a circular-arc-shaped wall pouring cavity is defined by the circular-arc-shaped wall formworks and the end formworks. Each layer of arc-shaped wall formwork comprises a plurality of formwork units which are sequentially connected and spliced into an arc shape, battens evenly arranged on the outer sides of the formwork units, connecting structures arranged at the abutted seam positions of the adjacent formwork units and steel bar wall hoops arranged on the outer sides of the battens, and the opposite-pull screw penetrates through the two layers of arc-shaped wall formworks. The two ends of the opposite-pull screw penetrate through the steel bar wall hoops and are fixed through nuts, so that tensioning and limiting of the arc-shaped wall formwork are achieved. According to the utility model, by arranging the clinging batten, the pressing template, the base plate and the connecting structure, the lateral pressure caused by concrete pouring and the tension of the template can be effectively resisted, the bending radian is ensured to be accurate, and the impression is good after pouring and forming.

Description

Technical Field

[0001] This utility model belongs to the field of building construction formwork technology, specifically relating to an arc-shaped wall formwork structure. Background Technology

[0002] Custom-made curved wall formwork used for installation is expensive, resulting in high costs for projects with small amounts of curved walls. Traditional curved wall formwork installation also has the following disadvantages:

[0003] 1) The large number of splicing surfaces of the template unit can easily lead to a large height difference between adjacent template surfaces, resulting in a poor appearance after casting.

[0004] 2) When installing the outer arc template, the template units of each arc segment are prone to push open the joint of the additional template after bending. If the connection rigidity is too large, it will be difficult to bend out the precise arc and affect the appearance.

[0005] 3) When installing the inner arc template, the additional template at the joint of the template unit of each arc segment detaches from the template units on both sides after bending, and there is no effective means to counteract this force. Utility Model Content

[0006] To address the aforementioned problems, the purpose of this utility model is to provide an arc-shaped wall template structure.

[0007] The specific technical solution is as follows:

[0008] An arc-shaped wall formwork structure includes two layers of arc-shaped wall formwork, end formwork at both ends of the arc-shaped wall formwork, and tie rods. The arc-shaped wall formwork and the end formwork formwork enclose an arc-shaped wall casting cavity. Each layer of arc-shaped wall formwork includes multiple formwork units that are sequentially connected and spliced ​​into an arc shape, timber evenly distributed on the outside of the formwork units, a connecting structure at the joint of adjacent formwork units, and steel reinforcement hoops on the outside of the timber. The tie rods penetrate the two layers of arc-shaped wall formwork, and both ends of the tie rods pass through the steel reinforcement hoops and are fixed with nuts to achieve tension and limit of the arc-shaped wall formwork.

[0009] Furthermore, the bottoms of the sequentially spliced ​​template units are flush, and the height difference between the tops of adjacent template units is 8-10mm. This avoids the formation of continuous joints due to the use of template units of the same length and type, which would lead to stress concentration on the side of the concrete and cause the formwork to burst.

[0010] Furthermore, the connection structure includes an additional pad, an L-shaped angle steel, and screws. The additional pad and the L-shaped angle steel are installed at the joint of adjacent template units from the inside to the outside. One side of the L-shaped angle steel is connected to the wooden block by screws. The screws pass through the other side of the L-shaped angle steel, the additional pad, and the template unit in sequence to achieve the connection.

[0011] Furthermore, one side of the L-shaped angle steel is provided with a round hole, through which screws are passed to connect the L-shaped angle steel and the timber. The other side of the L-shaped angle steel is provided with a long strip hole, through which screws are passed to connect the L-shaped angle steel, the additional pad, and the template unit.

[0012] Furthermore, the reinforced wall hoop includes interlocking steel bar segments, with the lap length between the steel bar segments being greater than the spacing between adjacent tie rods.

[0013] Furthermore, the bottom of the timber is flush with the template unit, and the top of the timber extends beyond the top of the template unit.

[0014] Furthermore, at least three sets of connection structures are provided at the joints of adjacent template units.

[0015] Furthermore, the arc-shaped wall template and the end template are connected by L-shaped angle steel and screws.

[0016] The L-shaped angle steel transmits torque. After the formwork unit is assembled, timber is erected on its surface and reinforced with steel hoops. The short side of the L-shaped angle steel connects to the timber, and the long side connects to an additional pad. When the formwork is bent into its arc, the pad at the joint of the inner formwork unit is stressed and tends to arch, generating upward pressure. This force is ultimately transmitted to the long side of the L-shaped angle steel. When the steel hoops are tightened, the tightening force is transmitted to the timber, making the timber fit tightly against the formwork unit surface. This force transmits bending moment through the short side of the L-shaped angle steel to the long side, ultimately becoming the downward pressure of the long side on the pad.

[0017] The beneficial effects of this utility model are as follows:

[0018] 1) This utility model, by setting up a tightly attached wooden block to press the template, and simultaneously setting up a pad and connecting structure, can effectively resist the lateral pressure brought by concrete pouring and the tension of the template itself, ensuring accurate bending curvature and good appearance after pouring and forming.

[0019] 2) This utility model has a simple structure, is easy to operate, and has strong applicability. Attached Figure Description

[0020] Figure 1 This is a cross-sectional schematic diagram of the present invention;

[0021] Figure 2 This is a magnified view of the details at point A;

[0022] Figure 3 This is a front view schematic diagram of the present invention;

[0023] Figure 4 This is a side view of an L-shaped angle steel.

[0024] Figure 5 This is a partial top view of the present invention.

[0025] In the diagram: 1. Arc-shaped wall formwork; 11. Formwork unit; 12. Timber; 13. Connecting structure; 131. Additional pad; 132. L-shaped angle steel; 1321. Round hole; 1322. Long strip hole; 14. Reinforcing steel wall hoop; 141. Reinforcing steel segment; 2. End formwork; 3. Tie rod; Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited thereto.

[0027] like Figures 1-3 and Figure 5 As shown, an arc-shaped wall formwork structure includes two layers of arc-shaped wall formwork 1, end formwork 2 located at both ends of the arc-shaped wall formwork 1, and multiple tie rods 3. The arc-shaped wall formwork 1 and the end formwork 2 form an arc-shaped wall casting cavity. Each layer of arc-shaped wall formwork 1 includes multiple formwork units 11 connected and spliced ​​in sequence to form an arc shape, timber 12 evenly distributed on the outside of the formwork unit 11, a connecting structure 13 located at the joint of adjacent formwork units 11, and steel reinforcement hoops 14 located on the outside of the timber 12. The tie rods 3 penetrate through the two layers of arc-shaped wall formwork. 1. The two ends of the tie rod 3 pass through the steel reinforcement hoop 14 and are fixed with nuts to achieve tension and limit of the arc-shaped wall template 1. The bottoms of the sequentially spliced ​​template units 11 are flush, and the height difference between the tops of adjacent template units 11 is 8-10mm. The bottom of the timber 12 is flush with the template unit 11, and the top of the timber 12 extends beyond the top of the template unit 11. The connecting structure 13 includes an additional pad 131, an L-shaped angle steel 132, and screws. The additional pad 131 and the L-shaped angle steel 132 are set from the inside to the outside at the joint of adjacent template units 11. Figure 4As shown, one side of the L-shaped angle steel 132 has a round hole 1321. Screws pass through the round hole 1321 to connect the L-shaped angle steel 132 and the timber 12. The bent connection between the template units 11 transmits pressure to the timber 12 through the L-shaped angle steel 132, ensuring that the template unit 11 is tightly attached to the timber 12. The other side of the L-shaped angle steel 132 has an elongated hole 1322. Screws pass through the elongated hole 1322 to connect the L-shaped angle steel 132, the additional pad 131, and the template unit 11. The elongated hole 1322 allows for... The screw placement can be adjusted according to the joint position between adjacent template units 11 to ensure the connection between template unit 11 and L-shaped angle steel 132. The reinforcing wall hoop 14 includes overlapping reinforcing bar segments 141. The overlap length between reinforcing bar segments 141 is greater than the spacing between adjacent tie rods 3 to prevent the extended lap section of reinforcing bar from loosening, warping, or bending downwards. At least three sets of connection structures 13 are provided at the joint of adjacent template units 11. The arc-shaped wall template 1 and the end template 2 are connected by L-shaped angle steel 132 and screws.

Claims

1. A circular arc-shaped wall formwork structure, characterized in that, The system includes two layers of arc-shaped wall templates (1), end templates (2) located at both ends of the arc-shaped wall templates (1), and tie rods (3). The arc-shaped wall templates (1) and end templates (2) form an arc-shaped wall casting cavity. Each layer of arc-shaped wall templates (1) includes multiple template units (11) that are connected and spliced ​​into an arc shape in sequence, timber (12) evenly arranged on the outside of the template unit (11), a connecting structure (13) located at the joint of adjacent template units (11), and a steel reinforcement hoop (14) located on the outside of the timber (12). The tie rods (3) penetrate the two layers of arc-shaped wall templates (1), and both ends of the tie rods (3) pass through the steel reinforcement hoop (14) and are fixed with nuts to achieve tensioning and limiting of the arc-shaped wall templates (1).

2. The arc-shaped wall template structure as described in claim 1, characterized in that, The bottoms of the sequentially spliced ​​template units (11) are flush, and the height difference between the tops of adjacent template units (11) is 8-10mm.

3. The arc-shaped wall template structure as described in claim 1, characterized in that, The connection structure (13) includes an additional pad (131), an L-shaped angle steel (132) and screws. The additional pad (131) and the L-shaped angle steel (132) are set at the joint of adjacent template units (11) from the inside to the outside. One side of the L-shaped angle steel (132) is connected to the wooden square (12) by screws. The screws pass through the other side of the L-shaped angle steel (132), the additional pad (131) and the template unit (11) in sequence to achieve the connection.

4. The arc-shaped wall template structure as described in claim 3, characterized in that, One side of the L-shaped angle steel (132) is provided with a round hole (1321). The screw passes through the round hole (1321) to connect the L-shaped angle steel (132) and the timber (12). The other side of the L-shaped angle steel (132) is provided with a long strip hole (1322). The screw passes through the long strip hole (1322) to connect the L-shaped angle steel (132), the additional pad (131), and the template unit (11).

5. The arc-shaped wall template structure as described in claim 1, characterized in that, The reinforced wall hoop (14) includes overlapping steel bar segments (141), and the overlap length between steel bar segments (141) is greater than the spacing between adjacent tie rods (3).

6. The arc-shaped wall template structure as described in claim 1, characterized in that, The bottom of the timber (12) is flush with the template unit (11), and the top of the timber (12) extends beyond the top of the template unit (11).

7. The arc-shaped wall template structure as described in claim 4, characterized in that, At least three sets of connection structures (13) shall be provided at the joint of adjacent template units (11).

8. The arc-shaped wall template structure as described in claim 4, characterized in that, The arc-shaped wall template (1) and the end template (2) are connected by L-shaped angle steel (132) and screws.

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