Post-cast strip supporting formwork based on concrete anti-cracking construction

Abstract

The utility model relates to the technical field of concrete construction, in particular to a post-cast strip supporting formwork based on concrete anti-cracking construction, which comprises two side formworks and a supporting component, the two side formworks are parallel to each other, the supporting component is arranged between the two side formworks and used for supporting the two side formworks, and the supporting component is arranged on the side formworks. A plurality of U-shaped grooves extending in the width direction of the side formwork are formed in one long side edge of the side formwork at equal intervals, rebar penetrating holes are formed in the side ends of the inner walls of the U-shaped grooves, rebars are arranged on the inner walls of the rebar penetrating holes in a penetrating mode, and arc-shaped clamping grooves allowing the rebars to be clamped in are formed in the hole walls of the rebar penetrating holes. After the reinforcing steel bars and the side formworks are installed in a penetrating mode by personnel, the plugging strips are inserted from the top ends of the side formworks to plug the reinforcing steel bar penetrating holes, in this way, the side formworks can be in a sealed state, the grout leakage area of the side formworks can be reduced, and the situation that in the prior art, grout leakage of the side formworks is serious is relieved.

Description

Technical Field

[0001] This utility model relates to the field of concrete construction technology, specifically to a post-pouring strip support formwork based on concrete crack prevention construction. Background Technology

[0002] Currently, in the construction of ultra-long concrete structures, the main purpose of setting up post-pouring strips is to prevent harmful cracks caused by uneven shrinkage or settlement of the reinforced concrete structure. During construction, formwork needs to be erected beforehand, and then concrete is poured to form the post-pouring strip.

[0003] The general steps for setting up the formwork for the post-pouring strip are as follows: First, tie two layers of steel bars spaced apart on the bottom formwork; second, install side formwork on both sides of the width of the post-pouring strip to separate the concrete on both sides.

[0004] To ensure the continuity of the reinforcing bars, the reinforcing bars will pass through the side formwork of the post-cast strip, so as per the instructions attached... Figure 1 As shown, the side formwork 1 has U-shaped grooves 3 for the steel bars 2 to pass through. The steel bars 2 of the upper and lower layers are both passed through the corresponding U-shaped grooves 3. However, during the concrete pouring process, due to the gap between the upper and lower layers of steel bars 2, the concrete is easy to flow from the U-shaped grooves 3 into the post-pouring strip, which means that there is a serious problem of grout leakage.

[0005] In conclusion, it is necessary to invent a post-cast strip support formwork based on concrete crack prevention construction. Utility Model Content

[0006] Therefore, this utility model provides a post-pouring strip support formwork based on concrete anti-cracking construction to solve the problem that during the concrete pouring process, due to the gap between the upper and lower layers of reinforcing bars 2, concrete easily flows into the post-pouring strip from the U-shaped groove 3, resulting in serious grout leakage.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a post-cast strip support formwork based on concrete anti-cracking construction, comprising two side formworks and a support assembly. The two side formworks are parallel to each other, and the support assembly is disposed between the two side formworks to support the two side formworks. A plurality of through holes extending along the width direction of the side formwork are equally spaced on a long side of the side formwork. Reinforcing bars are inserted through the inner wall of each through hole, and the hole wall of the through hole is provided with an arc-shaped groove for the reinforcing bars to be inserted.

[0008] Preferably, the upper long side of the side template is provided with a guide hole communicating with the through hole, and the bottom of the outer wall of the side template is provided with a sealing strip for sealing the through hole, and the sealing strip is slidably connected in the guide hole.

[0009] Preferably, a linkage strip is provided above the side template, and one end of several sealing strips extends out of the guide hole and is fixedly connected to the linkage strip vertically. When the linkage strip moves with the sealing strip to contact the side template, the sealing strip completely blocks the through hole.

[0010] Preferably, the two opposite walls of the through hole are fixed with sliding strips, and the side wall of the sealing strip is provided with a sliding groove that is slidably connected to the sliding strip.

[0011] Preferably, the support assembly includes two support blocks and a support rod for supporting the two support blocks. The support block includes two vertically connected connecting plates. One connecting plate abuts against the upper end face of the linkage rod, and the other connecting plate abuts against the inner side wall of the side template.

[0012] Preferably, the support rod includes a threaded sleeve and two screws threadedly connected to the threaded sleeve, with one end of each screw fixedly connected to the support block.

[0013] Preferably, the connecting plate that contacts the support block and the side template is fixed with a positioning post, the inner wall of the side template is provided with a positioning groove for the positioning post to be inserted, and the threaded sleeve is fitted with a screwing block in the middle.

[0014] The beneficial effects of this utility model are:

[0015] In this invention, after the reinforcement bars are installed through the side formwork, the through holes are sealed by inserting a sealing strip from the top of the side formwork. This seals the side formwork, thereby reducing the area of ​​grout leakage and mitigating the serious grout leakage problem in existing technologies. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the existing technology structure;

[0017] Figure 2 This is a schematic diagram of the overall structure in an embodiment of this application;

[0018] Figure 3 This is an exploded view of the side template in an embodiment of this application;

[0019] Figure 4 This is a cross-sectional schematic diagram of the side template in the embodiment of this application;

[0020] Figure 5 This is a cross-sectional schematic diagram illustrating the support component in the embodiments of this application;

[0021] Figure 6 This is a schematic diagram of the supporting components in the embodiments of this application;

[0022] Figure 7This is a schematic diagram of the side template in an embodiment of this application.

[0023] In the diagram: 1. Side formwork; 2. Reinforcing bar; 3. U-shaped groove; 4. Through-reinforcing bar hole; 5. Guide hole; 6. Sealing strip; 7. Linkage strip; 8. Sliding strip; 9. Sliding groove; 10. Support rod; 11. Support block; 12. Connecting plate; 13. Threaded sleeve; 14. Screw; 15. Tightening block; 16. Positioning post; 17. Positioning groove; 18. Arc-shaped slot. Detailed Implementation

[0024] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0025] Reference Figure 2 , 3 The present invention provides a post-pouring strip support formwork based on concrete anti-cracking construction, including two side formworks 1 and a support assembly. The two side formworks 1 are erected in parallel in the pouring area, and the support assembly is erected between the two side formworks 1 to support the two side formworks 1.

[0026] The side formwork 1 has a cuboid structure. A number of U-shaped grooves 3 extending along the width direction of the side formwork 1 are equally spaced on one long side. The inner wall of each U-shaped groove 3 has a through hole 4. A reinforcing bar 2 is inserted through the inner wall of each through hole 4. The hole wall of the through hole 4 has an arc-shaped groove 18 for the reinforcing bar 2 to be inserted. The upper long side of the side formwork 1 has a guide hole 5 communicating with the through hole 4. The side formwork 1 has a sealing strip 6 that is slidably connected in the guide hole 5 for sealing the through hole 4.

[0027] Reference Figure 3 A linkage strip 7 is provided above the side template 1, and several sealing strips 6 extend out of one end of the guide hole 5 and are all vertically and fixedly connected to the linkage strip 7;

[0028] During construction, the reinforcing bar 2 is passed through the through hole 4 and inserted into the corresponding arc-shaped groove 18. After all the reinforcing bars 2 have passed through and been inserted into the arc-shaped groove 18, the sealing bar 6 is slid into the through hole 4 by moving the linkage bar 7, thereby sealing the through hole 4.

[0029] Reference Figure 3 , 4 In order to improve the smoothness of the sliding of the sealing strip 6, the two opposite holes of the through hole 4 are fixed with sliding strips 8, and the side wall of the sealing strip 6 is provided with a sliding groove 9 that is slidably connected with the sliding strip 8.

[0030] Reference Figure 5 , 6The support assembly includes a support rod 10 and two support blocks 11. Each support block 11 includes two vertically connected connecting plates 12. One connecting plate 12 is used to abut against the upper end face of the linkage rod, and the other connecting plate 12 is used to abut against the inner side wall of the side template 1.

[0031] The support rod 10 supports two support blocks 11. Specifically, the support rod 10 includes a threaded sleeve 13 and two screws 14 threadedly connected to the threaded sleeve 13. One end of each screw 14 is fixedly connected to a support block 11. The support rod 10, composed of screws 14 and threaded sleeve 13, facilitates adjustment of the distance between the two support blocks 11 to adapt to different construction needs. To facilitate the user's rotation of the threaded sleeve 13, a screwing block 15 is fixed to the middle of the outer periphery of the threaded sleeve 13. The screwing block 15 can be hexagonal or other shapes that are easy to grip.

[0032] Reference Figure 6 , 7 A positioning post 16 is fixed on the connecting plate 12 of the support block 11 that contacts the side template 1. A positioning groove 17 for the positioning post 16 to be inserted is provided on the inner side wall of the side template 1. When the linkage bar 7 moves to fit against the upper end face of the side template 1, and one connecting plate 12 of the support block 11 abuts against the upper end face of the linkage bar 7, the positioning post 16 of the other connecting plate 12 aligns with the positioning groove 17 on the side template 1. That is, by setting the positioning post 16 on the support block 11 and opening the positioning groove 17 on the inner side wall of the side template 1, the support block 11 and the side template 1 are quickly and accurately positioned and installed, which improves the construction efficiency and increases the stability of the support components.

[0033] The usage process of this utility model is as follows: First, the two side templates 1 are parallel to each other and fixed in a predetermined position; second, the reinforcing bars 2 are passed through the through-holes 4 and inserted into the corresponding arc-shaped slots 18. After all the reinforcing bars 2 have passed through and been inserted into the arc-shaped slots 18, the blocking strip 6 is slid into the through-holes 4 by moving the linkage strip 7 downward and sealing the through-holes 4.

[0034] Then, the personnel can take out the support rod 10 that has been pre-connected to the support block 11. When one connecting plate 12 of the support block 11 abuts against the upper end face of the linkage bar 7, the positioning post 16 of the other connecting plate 12 is aligned with the positioning groove 17 on the side template 1. Then, by rotating the screwing block 15, the threaded sleeve 13 is rotated, so that the screw 14 can move to both sides, so that the connecting plate 12 presses against the side template 1 and the linkage bar 7, thereby supporting and pressing the side template 1.

[0035] The above description is merely a preferred embodiment of this utility model. Any person skilled in the art may modify this utility model or modify it into an equivalent technical solution using the technical solutions described above. Therefore, any simple modifications or equivalent substitutions made based on the technical solutions of this utility model are within the scope of protection claimed by this utility model.

Claims

1. A formwork for post-cast strip support based on concrete crack prevention construction, characterized in that: The device includes two side templates (1) and a support assembly. The two side templates (1) are parallel to each other. The support assembly is located between the two side templates (1) and is used to support the two side templates (1). A number of through holes (4) extending along the width direction of the side template (1) are opened at equal intervals on one long side of the side template (1). The inner wall of each through hole (4) is provided with a reinforcing bar (2). The hole wall of each through hole (4) is provided with an arc-shaped groove (18) for the reinforcing bar (2) to be inserted. The upper long side of the side template (1) is provided with a guide hole (5) communicating with the through hole (4). The bottom of the outer wall of the side template (1) is provided with a sealing strip (6) for sealing the through hole (4). The sealing strip (6) is slidably connected in the guide hole (5).

2. The formwork for post-cast strip support based on concrete crack prevention construction according to claim 1, characterized in that: The side template (1) is provided with a linkage strip (7), and a number of sealing strips (6) extend from one end of the guide hole (5) and are all vertically fixedly connected to the linkage strip (7). When the linkage strip (7) moves with the sealing strip (6) to contact the side template (1), the sealing strip (6) completely blocks the through hole (4).

3. The formwork for post-cast strip support based on concrete crack prevention construction according to claim 2, characterized in that: The two opposite walls of the through hole (4) are fixed with sliding strips (8), and the side wall of the sealing strip (6) is provided with a sliding groove (9) that is slidably connected to the sliding strip (8).

4. The formwork for post-cast strip support based on concrete crack prevention construction according to claim 1, characterized in that: The support assembly includes two support blocks (11) and a support rod (10) for supporting the two support blocks (11). The support block (11) includes two vertically connected connecting plates (12). One of the connecting plates (12) abuts against the upper end face of the linkage rod, and the other connecting plate (12) abuts against the inner side wall of the side template (1).

5. A post-cast strip support formwork based on concrete crack prevention construction according to claim 4, characterized in that: The support rod (10) includes a threaded sleeve (13) and two screws (14) threadedly connected to the threaded sleeve (13), with one end of each screw (14) fixedly connected to the support block (11).

6. A post-cast strip support formwork based on concrete crack prevention construction according to claim 5, characterized in that: The connecting plate (12) that contacts the support block (11) and the side template (1) is fixed with a positioning post (16). The inner side wall of the side template (1) is provided with a positioning groove (17) for the positioning post (16) to be inserted. The threaded sleeve (13) is fitted with a screwing block (15) in the middle.

Images