Unilateral formwork structure

Abstract

The utility model relates to a unilateral formwork structure, which relates to the technical field of building construction, and is characterized in that a first formwork arranged on the inner side of an underground diaphragm wall and second formworks arranged on the two sides of the underground diaphragm wall are fixedly connected through a first three-section type water stop screw rod and a second three-section type water stop screw rod; the pouring space is matched with the pouring and tamping opening in the upper floor slab and the large horn mouth in the first formwork to achieve concrete pouring, and meanwhile the split nuts, the fixing nuts, the reinforcing plates, the reinforcing rods and other structures are additionally arranged so that the overall stability and waterproof performance can be improved. The technical effects that the stability of the formwork structure is improved, adaptability is high, and the waterproof effect is achieved are achieved.

Description

Technical Field

[0001] This application relates to the field of building construction technology, and in particular to a single-sided formwork structure. Background Technology

[0002] As people's demand for architectural space continues to grow, the reverse construction method is being used more and more widely in dense urban foundation pits. Among the foundation pit projects constructed using the reverse construction method, the "two-wall integrated system" is the most widely used. In order to improve the overall stability, vertical support, and seismic resistance of the building structure, buttress columns are generally set at the joints of the diaphragm walls in the "two-wall integrated system". At this time, the setting of the buttress column formwork structure becomes the key to whether it can perfectly perform its function.

[0003] Currently, the commonly used column formwork structures in engineering projects generally adopt double-sided formwork structures and single-sided formwork structures. Double-sided formwork structures require chiseling grooves in the concrete of the diaphragm wall to create space for the formwork, which can cause permanent damage to the overall structure, and the construction efficiency is low and the cost is high. Single-sided formwork structures utilize the post-installation of rebar and bolts in the diaphragm wall to form the formwork structure, which can also damage the diaphragm wall structure. Therefore, there is an urgent need for a new type of formwork structure that can protect the permanent structure, improve construction efficiency, and reduce costs. Utility Model Content

[0004] To address the issue of self-waterproofing in structures in the prior art, this application provides a single-sided formwork structure.

[0005] This application provides a single-sided formwork structure, which adopts the following technical solution:

[0006] A single-sided formwork structure includes an upper floor slab, a lower floor slab, and a diaphragm wall located between the upper and lower floor slabs. The structure is characterized by: a first template vertically arranged inside the diaphragm wall; reinforcing bars pre-embedded in the diaphragm wall; a first three-section water-stop bolt fixedly connected to the reinforcing bars; one end of the first three-section water-stop bolt fixedly connected to the reinforcing bars; a fixing bolt on the other end of the first three-section water-stop bolt; the first template fixedly connected to the end of the first three-section water-stop bolt away from the diaphragm wall; second templates vertically arranged between the first template and the diaphragm wall on both sides; two second templates arranged opposite each other; a second three-section water-stop bolt arranged between the two second templates; both ends of the second three-section water-stop bolt fixedly connected to the two second templates; a pouring space formed between the first template, the diaphragm wall, and the two second templates; a large flared opening for pouring on the first template; and a tamping opening matching the large flared opening on the upper floor slab.

[0007] By adopting the above technical solution, the first template is fixed to the diaphragm wall using three-section water-stop bolts. The large flared opening on the first template and the pouring opening on the upper floor slab enable smooth concrete pouring, ensuring the structural integrity of the diaphragm wall and guaranteeing the stability and waterproofing effect of the formwork structure.

[0008] Preferably, a first pair of tie nuts is provided on the side of the first three-section water-stop tie rod located in the pouring space near the first template, and a first fixing nut is also provided on the end of the first three-section water-stop tie rod away from the diaphragm wall. The first template is fixed between the first pair of tie nuts and the first fixing nut, and the first pair of tie nuts and the first template form an abutting fit. A second pair of tie nuts and a second fixing nut are provided at both ends of the second three-section water-stop tie rod. The second pair of tie nuts are located in the pouring space, and the second template is fixed between the second pair of tie nuts and the second fixing nut.

[0009] By adopting the above technical solution, the connection stability between the first template and the diaphragm wall is further enhanced, ensuring that the first template will not move or deform during the pouring process. At the same time, the first tie nut can waterproof the connection between the first template and the first three-section water-stop bolt.

[0010] Preferably, both the first three-section water-stop screw and the second three-section water-stop screw are provided with waterproof sheets, which are located within the casting space.

[0011] By adopting the above technical solution, groundwater seepage into the pouring space is effectively prevented, thereby ensuring the quality of the poured buttress columns.

[0012] Preferably, a first reinforcing plate and a second reinforcing plate are respectively provided on the side of the first template and the second template away from the pouring space. The first reinforcing plate abuts against the first template, and the second reinforcing plate abuts against the second template. The first reinforcing plate is located between the first template and the first fixing bolt, and the second reinforcing plate is located between the second template and the second fixing bolt.

[0013] By adopting the above technical solution, the first reinforcing plate and the second reinforcing plate improve the structural strength and stability of the first template and the second template, thereby ensuring that the cast buttress columns are regular in shape and of high quality.

[0014] Preferably, a third reinforcing plate is provided on the side of the first reinforcing plate away from the pouring space, and the third reinforcing plate is located between the first tie nut and the fixing bolt.

[0015] By adopting the above technical solution and adding a second reinforcing plate, the stability of the entire formwork structure can be further enhanced, and the construction safety factor can be improved.

[0016] Preferably, a first reinforcing rod is provided on the side of the third reinforcing plate away from the pouring space, one end of the first reinforcing rod is fixedly connected to the third reinforcing plate, and the other end of the first reinforcing rod is fixedly connected to the lower floor slab.

[0017] By adopting the above technical solution, the first reinforcing rod connects the formwork structure to the lower floor slab, greatly enhancing the stability and load-bearing capacity of the entire structure.

[0018] Preferably, a second reinforcing rod is provided at the opening of the large horn-shaped mouth, one end of the second reinforcing rod is fixedly connected to the opening of the large horn-shaped mouth, and the other end of the second reinforcing rod is fixedly connected to the lower floor slab.

[0019] By adopting the above technical solution and adding a second reinforcing rod, the deformation or damage of the large trumpet opening caused by the impact force generated by the flow of concrete during the pouring process can be effectively prevented.

[0020] Preferably, the first template is also provided with a small flared opening for observing the pouring process.

[0021] By adopting the above technical solution, the design of the small flared opening allows construction workers to monitor the pouring process in real time, identify problems in a timely manner and make adjustments, thereby improving the construction quality.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. The use of a first three-section water-stop bolt, in conjunction with pre-reserved steel bars and reinforcing rods, can ensure the integrity of the existing structure and provide stable support for the formwork structure.

[0024] 2. The two types of flared openings can effectively control the pouring of concrete, making the pouring process smoother and thus ensuring its molding quality and waterproofing effect.

[0025] 3. Compared with traditional formwork structures, this utility model shows significant advantages in saving labor, reducing costs and shortening construction time. Attached Figure Description

[0026] Figure 1 This is a side view of the overall structure in an embodiment of this application;

[0027] Figure 2 This is a top view of the overall structure in the embodiments of this application.

[0028] Attached reference numerals: 1. Upper floor slab; 2. Lower floor slab; 3. Diaphragm wall; 4. First formwork; 5. Reinforcing steel; 6. First three-section water-stop tie rod; 601. First tie nut; 602. First fixing nut; 7. Second formwork; 8. Second three-section water-stop tie rod; 801. Second tie nut; 802. Second fixing nut; 9. Large bell mouth; 10. Pouring port; 11. Waterproof sheet; 12. First reinforcing plate; 13. Second reinforcing plate; 14. Third reinforcing plate; 15. First reinforcing rod; 16. Second reinforcing rod; 17. Small bell mouth. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1 - Appendix Figure 2 This application will be described in further detail.

[0030] This application discloses a single-sided formwork structure.

[0031] Reference Figure 1 and Figure 2 A single-sided formwork structure includes an upper floor slab 1, a lower floor slab 2, and a diaphragm wall 3 located between the upper floor slab 1 and the lower floor slab 2. A first formwork 4 is vertically installed on the inner side of the diaphragm wall 3. Reinforcing bars 5 are pre-embedded in the diaphragm wall 3. The reinforcing bars 5 are fixedly connected to a first three-section water-stop screw rod 6. One end of the first three-section water-stop screw rod 6 is fixedly connected to the reinforcing bars 5. The first formwork 4 is fixedly connected to the end of the first three-section water-stop screw rod 6 away from the diaphragm wall 3. A second formwork 7 is vertically installed between the two sides of the first formwork 4 and the diaphragm wall 3. The two second formwork 7 are arranged opposite each other. A second three-section water-stop screw rod 8 is installed between the two second formwork 7. The two ends of the second three-section water-stop screw rod 8 are fixedly connected to the two second formwork 7 respectively. A pouring space is formed between the first formwork 4, the diaphragm wall 3, and the two second formwork 7. A large flared opening 9 for pouring is opened at the top of the first formwork 4. A tamping opening 10 that cooperates with the large flared opening 9 is opened on the upper floor slab 1.

[0032] The first three-section water-stop tie rod 6 has a first tie nut 601 on the side of the first formwork 4 located within the pouring space. A first fixing nut 602 is also provided at the end of the first three-section water-stop tie rod 6 furthest from the diaphragm wall 3. The first formwork 4 is fixed between the first tie nut 601 and the first fixing nut 602, with the first tie nut 601 and the first formwork 4 forming an abutting fit. The second three-section water-stop tie rod 8 has a second tie nut 801 and a second fixing nut 802 at both ends. The second tie nut 801 is located within the pouring space, and the second formwork 7 is fixed between the second tie nut 801 and the second fixing nut 802. Both the first tie nut 601 and the first fixing nut 602 are made of high-strength steel, and the second tie nut 801 and the second fixing nut 802 are made of the same high-strength steel, ensuring the firmness of each connection point and improving the overall stability of the formwork structure.

[0033] Waterproof sheets 11 are provided on both the first and third-section water-stop screw rods 6 and the second and third-section water-stop screw rods 8. The waterproof sheets 11 are located in the casting space. The waterproof sheets 11 are usually made of corrosion-resistant materials, such as rubber or polyurethane, which have good waterproof sealing properties. The waterproof sheets 11 can also be made of polytetrafluoroethylene (PTFE), which has excellent wear resistance and corrosion resistance, thus enhancing the waterproof effect.

[0034] A first reinforcing plate 12 and a second reinforcing plate 13 are respectively provided on the side of the first template 4 and the second template 7 away from the pouring space. The first reinforcing plate 12 abuts against the first template 4, and the second reinforcing plate 13 abuts against the second template 7. The first reinforcing plate 12 is located between the first template 4 and the first fixing bolt, and the second reinforcing plate 13 is located between the second template 7 and the second fixing bolt. The first reinforcing plate 12 and the second reinforcing plate 13 are made of high-strength steel or composite materials, which have the effect of enhancing the strength of the template and improving the stability and reliability of the entire formwork structure.

[0035] A third reinforcing plate 14 is also provided on the side of the first reinforcing plate 12 away from the pouring space. The third reinforcing plate 14 is located between the first reinforcing plate 12 and the first fixing bolt. The third reinforcing plate 14 is also made of high-strength material, which increases the rigidity of the structure and further improves the stability of the template structure.

[0036] A first reinforcing rod 15 is provided on the side of the third reinforcing plate 14 away from the pouring space. One end of the first reinforcing rod 15 is fixedly connected to the third reinforcing plate 14, and the other end of the first reinforcing rod 15 is fixedly connected to the lower floor slab 2. The first reinforcing rod 15 is made of high-strength steel wire rope or other high-strength metal materials, which provides support for the template structure and enhances the overall stability.

[0037] A second reinforcing rod 16 is provided at the opening of the large flared mouth 9. One end of the second reinforcing rod 16 is fixedly connected to the opening of the large flared mouth 9, and the other end of the second reinforcing rod 16 is fixedly connected to the lower floor slab 2. The second reinforcing rod 16 is made of high-strength metal material. By reinforcing the large flared mouth 9, it is ensured that the concrete can smoothly enter the pouring space during the pouring process.

[0038] The first template 4 is also equipped with a small flared opening 17 for observing the pouring process. The small flared opening 17 is located on the side of the large flared opening 9, which facilitates observation of the pouring process and ensures the quality of the pouring.

[0039] The implementation principle of this embodiment is as follows: by adopting the above-mentioned structural design and technical means, many problems in the traditional double-sided formwork structure are effectively solved. In particular, the integrity of the diaphragm wall 3 structure and the construction efficiency have been optimized and upgraded. The grooving treatment of the diaphragm wall 3 wall surface has been eliminated, and the integrity of the original structure has been preserved to the maximum extent. The three-section water-stop bolt and multi-layer reinforcement plate configuration scheme have been introduced, which shortens the construction time and significantly reduces the cost.

[0040] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A single-sided formwork structure, comprising an upper floor slab (1) and a lower floor slab (2) and a diaphragm wall (3) located between the upper floor slab (1) and the lower floor slab (2), characterized in that: A first template (4) is vertically installed on the inner side of the diaphragm wall (3). Reinforcing bars (5) are pre-embedded in the diaphragm wall (3). The reinforcing bars (5) are fixedly connected to a first three-section water-stop screw rod (6). One end of the first three-section water-stop screw rod (6) is fixedly connected to the reinforcing bars (5). The first template (4) is fixedly connected to the end of the first three-section water-stop screw rod (6) away from the diaphragm wall (3). A second template (7) is vertically installed between the first template (4) and the diaphragm wall (3) on both sides. Two second templates (7) are arranged opposite to each other, and a second three-section water-stop screw (8) is provided between the two second templates (7). The two ends of the second three-section water-stop screw (8) are fixedly connected to the two second templates (7). A pouring space is formed between the first template (4), the diaphragm wall (3) and the two second templates (7). A large horn mouth (9) for pouring is provided on the first template (4), and a pouring port (10) that matches the large horn mouth (9) is provided on the upper floor slab (1).

2. The single-sided formwork structure according to claim 1, characterized in that: The first three-section water-stop screw (6) is provided with a first tie nut (601) on the side of the first template (4) in the pouring space. The first three-section water-stop screw (6) is also provided with a first fixing nut (602) at the end away from the diaphragm wall (3). The first template (4) is fixed between the first tie nut (601) and the first fixing nut (602). The first tie nut (601) and the first template (4) form an abutting fit. The second three-section water-stop screw (8) is provided with a second tie nut (801) and a second fixing nut (802) at both ends. The second tie nut (801) is located in the pouring space. The second template (7) is fixed between the second tie nut (801) and the second fixing nut (802).

3. A single-sided formwork structure according to claim 2, characterized in that: Waterproof sheets (11) are provided on both the first three-section water-stop screw (6) and the second three-section water-stop screw (8), and the waterproof sheets (11) are located in the pouring space.

4. A single-sided formwork structure according to claim 2, characterized in that: The first template (4) and the second template (7) are respectively provided with a first reinforcing plate (12) and a second reinforcing plate (13) on the side away from the pouring space. The first reinforcing plate (12) abuts against the first template (4), and the second reinforcing plate (13) abuts against the second template (7). The first reinforcing plate (12) is located between the first template (4) and the first fixing bolt, and the second reinforcing plate (13) is located between the second template (7) and the second fixing bolt.

5. A single-sided formwork structure according to claim 4, characterized in that: A third reinforcing plate (14) is provided on the side of the first reinforcing plate (12) away from the pouring space. The third reinforcing plate (14) is located between the first tie nut (601) and the fixing bolt.

6. A single-sided formwork structure according to claim 5, characterized in that: The third reinforcing plate (14) is provided with a first reinforcing rod (15) on the side away from the pouring space. One end of the first reinforcing rod (15) is fixedly connected to the third reinforcing plate (14), and the other end of the first reinforcing rod (15) is fixedly connected to the lower floor slab (2).

7. A single-sided formwork structure according to claim 1, characterized in that: A second reinforcing rod (16) is provided at the opening of the large horn mouth (9). One end of the second reinforcing rod (16) is fixedly connected to the opening of the large horn mouth (9), and the other end of the second reinforcing rod (16) is fixedly connected to the lower floor slab (2).

8. A single-sided formwork structure according to claim 1, characterized in that: The first template (4) is also provided with a small flared opening (17) for observing the pouring process.

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