A back-to-top return-free post-pouring belt two-side supporting mechanism

By setting multiple support pipes on the casting formwork to abut against the ground, combined with positioning components, overflow prevention outlets, pads, and reinforcing components, the technical problems of traditional steel pipe scaffolding are solved, achieving efficient and stable post-cast strip support, preventing cracks and sagging, and ensuring structural stability and construction efficiency.

CN224314593UActive Publication Date: 2026-06-02CHINA CONSTR FIRST BUILDING (GRP) CORP LTD +1

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHINA CONSTR FIRST BUILDING (GRP) CORP LTD
Filing Date
2025-07-10
Publication Date
2026-06-02

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Abstract

The application relates to a back-pouring-strip-side supporting mechanism without returning, belonging to the field of building construction, which comprises a pouring formwork and a back-pouring strip arranged on the pouring formwork, a supporting pipe arranged on the two sides of the back-pouring strip in the width direction of the back-pouring strip and abutting against the pouring formwork at one end and abutting against the ground at the other end, a plurality of the supporting pipes arranged on any side along the length direction of the back-pouring strip, a pouring hole arranged through the abutting position of the pouring formwork and the end of any supporting pipe, and a column formed by pouring concrete into the supporting pipe through the pouring hole and solidifying. The application has the effect of improving the stability of the back-pouring-strip-side supporting.
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Description

Technical Field

[0001] This application relates to the field of building construction technology, and in particular to a support mechanism for both sides of a post-cast strip that does not require backfilling. Background Technology

[0002] In the construction industry, as building scale continues to expand and building structures become increasingly complex, the requirements for construction quality, efficiency, and cost control are becoming increasingly stringent. Among these requirements, post-cast strips are concrete strips left at appropriate locations in foundation slabs, walls, beams, and slabs during construction to prevent harmful cracks that may occur in reinforced concrete structures due to uneven shrinkage or settlement. Post-cast strip construction is a crucial step in building construction, affecting the stability and safety of the entire building structure. Good post-cast strip construction not only improves building quality but also reduces later maintenance costs.

[0003] In existing technologies, the common practice for supporting the structures on both sides of the post-cast strip is to use steel pipe scaffolding. Construction workers, according to design requirements, gradually build a stable frame using scaffolding pipes and fasteners to bear the load of the structures on both sides of the post-cast strip. During construction, the spacing and angle of the scaffolding pipes must be precisely controlled, and each component must be securely connected with fasteners to ensure the support system conforms to mechanical principles. To guarantee the stability of the support, repeated checks and adjustments are made, and necessary reinforcement is carried out. Furthermore, this steel pipe scaffolding is interconnected with the formwork support frame; when dismantling other parts of the formwork and supports, care must be taken to preserve the support at the post-cast strip.

[0004] However, existing steel pipe scaffolding support systems have significant drawbacks. The system's stability is poor, particularly at the cantilever ends. Because the beams and slabs at the post-cast strip are cantilevered, they are prone to cracking or sagging. Furthermore, since the steel pipe scaffolding is connected to the formwork support frame, workers can easily dismantle the post-cast strip support when removing other parts of the formwork and supports, causing changes in the structural stress. Therefore, to address the low stability of traditional scaffolding support systems on both sides of the post-cast strip, this application proposes a post-cast strip support mechanism that eliminates the need for backfilling. Utility Model Content

[0005] To address the issue of low stability in traditional scaffolding support systems on both sides of the post-cast strip, this application provides a post-cast strip support mechanism that eliminates the need for backfilling.

[0006] This application provides a support mechanism for both sides of the post-cast strip without backfilling, which adopts the following technical solution:

[0007] A support mechanism for a non-returnable post-pouring strip includes a casting template and a post-pouring strip formed on the casting template. A support pipe is provided on both sides along the width direction of the post-pouring strip, with one end abutting against the casting template and the other end abutting against the ground. Multiple support pipes are provided on each side along the length direction of the post-pouring strip. A pouring hole is provided through the abutment between the casting template and the end of any support pipe. Concrete is injected into the support pipe through the pouring hole and solidifies into a column.

[0008] By adopting the above technical solution, one end of the support pipe abuts against the casting template and the other end abuts against the ground. Multiple support pipes are set along the length of the post-cast strip, which can effectively improve the stability of the structural support on both sides of the post-cast strip and prevent cracks or sagging caused by the cantilever structure. Concrete is injected into the support pipe through the casting hole and solidifies into a column, which further enhances the support capacity. At the same time, it avoids the structural stress change caused by workers accidentally dismantling the support at the post-cast strip when dismantling other parts of the template and support.

[0009] Preferably, the casting formwork includes a secondary beam formwork and a foundation formwork, and the post-cast strip is opened on the foundation formwork between two adjacent secondary beam formworks. The support pipes arranged on both sides along the width direction of the post-cast strip are a first support pipe and a second support pipe, and the ends of the first support pipe and the second support pipe near the casting formwork respectively form an abutment fit with the foundation formwork and the secondary beam formwork.

[0010] By adopting the above technical solution, the support pipe is divided into a first support pipe and a second support pipe, which abut against the foundation formwork and the secondary beam formwork on both sides of the width direction of the post-pouring strip, respectively. This can more rationally distribute the support force on the pouring formwork, thereby improving the support stability of the structure on both sides of the post-pouring strip.

[0011] Preferably, a positioning element is provided at one end of the support tube that forms an abutment with the ground, and the positioning element forms an abutment and limiting fit with the ground.

[0012] By adopting the above technical solution, a positioning element is set at one end of the support pipe that abuts against the ground and forms a contact and limiting fit with the ground. This can limit the position of the support pipe before the concrete is poured, thereby preventing the support pipe from shaking or shifting during the pouring process, and allowing the support pipe to more stably support the structures on both sides of the post-pouring strip.

[0013] Preferably, the end of the support tube near the pouring hole is provided with an overflow prevention port, and the overflow prevention port and the pouring hole are connected in an interlocking manner.

[0014] By adopting the above technical solution, an overflow prevention port is set at the end of the support pipe near the pouring hole, and the overflow prevention port and the pouring hole are connected in an interlocking manner. This can prevent concrete from overflowing from the pouring hole during the pouring process, avoid material waste and environmental pollution, and ensure the quality of concrete pouring.

[0015] Preferably, a pad is provided on both sides of the overflow port on the support pipe, and any one of the pads forms an abutment fit with the casting template.

[0016] By adopting the above technical solution, pads that abut against the pouring template are set on both sides of the overflow outlet on the support pipe, which further improves the stability of the support pipe during the concrete pouring process. At the same time, after the pouring is completed, the pads on both sides can be removed to form a gap, which makes it convenient to break the support pipe after the support work is completed.

[0017] Preferably, the end of the support tube closest to the ground is provided with an assisted incision.

[0018] By adopting the above technical solution, when the support pipe needs to be broken after the concrete-filled support pipe has been supported, the auxiliary cutting can make it easier and less strenuous for workers to break it, thereby improving construction efficiency.

[0019] Preferably, a reinforcing component is provided inside the support tube.

[0020] By adopting the above technical solution, the structural strength of the support tube can be enhanced by setting a reinforcing component inside the support tube, thereby improving the support capacity of the entire support mechanism on both sides of the post-pouring strip for the structure on both sides of the post-pouring strip.

[0021] Preferably, the reinforcing component includes a steel bar support frame and reinforcing ribs, wherein two steel bar support frames are provided and the two ends of the reinforcing ribs are respectively detachably connected to the steel bar support frames.

[0022] By adopting the above technical solution, the reinforcing component consists of two steel bar support frames and reinforcing ribs, and the two ends of the reinforcing ribs are detachably connected to the steel bar support frames, thereby improving the flexibility and ease of installation of the reinforcing component, and further improving the support strength and stability of the support pipe.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. Multiple support pipes are installed on both sides of the post-cast strip, with one end abutting the casting formwork and the other end abutting the ground. Pouring holes are provided at the joints between the casting formwork and the support pipe ends. Concrete is injected into the support pipes through these holes and solidifies into columns. These support pipes evenly distribute the load on both sides of the post-cast strip and transfer it to the ground. Compared with traditional steel pipe scaffolding support systems, the use of multiple support pipes significantly improves the stability of the support on both sides of the post-cast strip, preventing cracks or sagging in the cantilevered beams and slabs. Furthermore, the support pipes are unaffected by the dismantling of other formwork and supports, making them less prone to accidental removal, ensuring the structural stability on both sides of the post-cast strip and maintaining the safety of the building structure.

[0025] 2. The support pipe includes a first support pipe and a second support pipe, which abut against the foundation formwork and the secondary beam formwork respectively. This allows for a more reasonable distribution of the supporting force on the pouring formwork. The positioning component prevents the support pipe from shaking or shifting during the pouring process. The overflow port prevents concrete from overflowing from the pouring hole during the pouring process, avoiding material waste and environmental pollution. The spacer blocks further improve the stability of the support pipe during the concrete pouring process. At the same time, after the pouring is completed, the spacer blocks on both sides can be removed to form a notch. The notch combined with the auxiliary cutting can allow workers to more efficiently break the support pipe after it has finished its work. The reinforcement components improve the support capacity of the entire non-backfilling post-pouring strip support mechanism for the structures on both sides of the post-pouring strip. Attached Figure Description

[0026] Figure 1 This is an overall sectional view that mainly reflects the overall structure in the embodiments of this application;

[0027] Figure 2 This is a partial cross-sectional view of the anti-overflow port and pad structure in the embodiments of this application;

[0028] Figure 3 This is a partial cross-sectional view of the embodiment of this application, mainly showing the auxiliary incision and the reinforcing component structure;

[0029] Figure 4 This is a partial isometric schematic diagram of the main reinforced component structure in the embodiments of this application.

[0030] Reference numerals: 1. Casting formwork; 11. Secondary beam formwork; 12. Foundation formwork; 2. Post-cast strip; 3. Support pipe; 31. First support pipe; 32. Second support pipe; 4. Casting hole; 5. Positioning component; 51. Positioning frame; 6. Overflow outlet; 7. Spacer block; 71. Notch; 8. Auxiliary cut; 9. Reinforcing component; 91. Rebar support frame; 911. Connecting cylinder; 92. Reinforcing bar. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1 - Appendix Figure 4 This application will be described in further detail.

[0032] This application discloses a support mechanism for both sides of the post-cast strip without backfilling.

[0033] Reference Figure 1 and Figure 2A support mechanism for a post-pouring strip without backfilling is disclosed, comprising a casting template 1 and a post-pouring strip 2 formed on the casting template 1. In this embodiment, the casting template 1 includes a secondary beam template 11 and a foundation template 12, and the post-pouring strip 2 is formed on the foundation template 12 between two adjacent secondary beam templates 11. A support pipe 3 is provided on both sides along the width direction of the post-pouring strip 2, with one end abutting against the casting template 1 and the other end abutting against the ground. The support pipe 3 on either side is arranged along the length direction of the post-pouring strip 2. There are multiple support pipes. In this embodiment, the support pipes 3 arranged on both sides along the width direction of the post-pouring strip 2 are the first support pipe 31 and the second support pipe 32. The ends of the first support pipe 31 and the second support pipe 32 near the pouring template 1 respectively form an abutment fit with the foundation template 12 and the secondary beam template 11. A pouring hole 4 is opened through the abutment between the pouring template 1 and the end of any support pipe 3. The diameter of the pouring hole 4 is smaller than the diameter of the support pipe 3, and the concrete is injected into the support pipe 3 through the pouring hole 4 and solidifies into a column.

[0034] In practical use, the casting formwork 1 includes secondary beam formwork 11 and foundation formwork 12, and the post-cast strip 2 is opened on the foundation formwork 12 between two adjacent secondary beam formworks 11. At the same time, the support pipe 3 is divided into a first support pipe 31 and a second support pipe 32, which abut against the foundation formwork 12 and the secondary beam formwork 11 on both sides of the width direction of the post-cast strip 2, which can more rationally distribute the support force on the casting formwork 1. Concrete is injected into the first support pipe 31 and the second support pipe 32 through the casting hole 4 and solidifies into a column, which further enhances the support capacity and prevents workers from accidentally removing the support at the post-cast strip 2, which would cause changes in the structural stress.

[0035] Since the structure and connection method of the first support tube 31 and the second support tube 32 are the same, the following description will use the first support tube 31 as an example:

[0036] Reference Figure 1 and Figure 3 The first support pipe 31 has a positioning element 5 at one end that abuts against the ground. In this embodiment, the positioning element 5 is a positioning frame 51 with a limiting space formed by wooden beams. The end of the first support pipe 31 is inserted into the positioning frame 51 for limiting, and the positioning frame 51 abuts against the ground for limiting. In actual use, the positioning frame 51 abuts against the ground and the end of the first support pipe 31 for limiting, thereby increasing the contact area between the first support pipe 31 and the ground and limiting its position before the first support pipe 31 is poured with concrete, thus preventing the first support pipe 31 from shaking or shifting during the pouring process.

[0037] Reference Figure 2 and Figure 3The first support pipe 31 has an integrally formed overflow port 6 at one end near the pouring hole 4. In this embodiment, the diameter of the outer wall of the overflow port 6 is equal to the diameter of the pouring hole 4, and the overflow port 6 and the pouring hole 4 form an insertion fit. A pad 7 is provided on both sides of the overflow port 6 on the first support pipe 31, and any pad 7 forms an abutment fit with the foundation template 12. An auxiliary cutting opening 8 is provided at the end of the first support pipe 31 near the ground. In this embodiment, the auxiliary cutting opening 8 is a section opened on the support pipe 3. The annular inwardly recessed cut, in actual use, allows the overflow port 6 to interlock with the pouring hole 4, preventing concrete from overflowing from the pouring hole 4 during the pouring process. At the same time, the pad block 7 further improves the stability of the first support pipe 31 during the concrete pouring process. After the pouring is completed, the pad blocks 7 on both sides can be removed to form a notch 71. When the first support pipe 31 with concrete has completed its support work and needs to be broken, the combination of the auxiliary cut 8 and the notch 71 allows the workers to break it more efficiently.

[0038] Reference Figure 3 and Figure 4 The first support pipe 31 is pre-embedded with a reinforcing component 9. In this embodiment, the reinforcing component 9 includes a circular steel bar support frame 91 and a reinforcing rib 92. There are two steel bar support frames 91 and two reinforcing ribs 92. The diameter of any steel bar support frame 91 is smaller than the diameter of the overflow port 6 and larger than the minimum diameter at the auxiliary cut 8. A connecting cylinder 911 is fixedly connected to any steel bar support frame 91 by welding. There are two connecting cylinders 911. The two ends of any reinforcing rib 92 are detachably connected to the connecting cylinders 911 on the two steel bar support frames 91 respectively. In actual use, the two ends of any reinforcing rib 92 are detachably connected to the connecting cylinders 911 on the two steel bar support frames 91 respectively to form the reinforcing component 9, thereby improving the flexibility and ease of installation of the reinforcing component 9. Then, the reinforcing component 9 is inserted into the first support pipe 31 from the overflow port 6 to enhance the structural strength of the first support pipe 31, thereby improving the support capacity of the entire support mechanism on both sides of the non-backfilling post-pouring strip 2 for the structure on both sides of the post-pouring strip 2.

[0039] The implementation principle of this application embodiment is as follows: one end of the first support pipe 31 and the second support pipe 32 respectively form an abutment fit with the foundation formwork 12 and the secondary beam formwork 11 on both sides of the width direction of the post-pouring strip 2, and the other end of the first support pipe 31 and the second support pipe 32 forms an abutment fit with the ground. This can more reasonably distribute the support force on the pouring formwork 1, thereby improving the support stability of the structure on both sides of the post-pouring strip 2 and preventing cracks or sagging caused by the cantilever structure. The concrete is injected into the support pipe 3 through the pouring hole 4 and solidifies into a column, further enhancing the support capacity. At the same time, it avoids the structural stress change caused by workers accidentally dismantling the support at the post-pouring strip 2 when dismantling other parts of the formwork and support.

[0040] The positioning frame 51 increases the contact area between the support pipe 3 and the ground, limiting its position before concrete is poured, thus preventing the support pipe 3 from shaking or shifting during the pouring process. The overflow port 6 forms an interlocking fit with the pouring hole 4, preventing concrete from overflowing from the pouring hole 4 during the pouring process, avoiding material waste and environmental pollution, and ensuring the quality of concrete pouring. The pad block 7 further improves the stability of the first support pipe 31 during concrete pouring, and after pouring, the pad blocks 7 on both sides can be removed to form a notch 71. When the support pipe 3 with concrete has completed its support work and needs to be broken, the auxiliary cut 8 combined with the notch 71 allows workers to break it more easily and effortlessly, thereby improving construction efficiency. The reinforcing component 9 embedded in the support pipe 3 consists of a steel bar support frame 91 and reinforcing ribs 92, improving the flexibility and ease of installation of the reinforcing component 9, and improving the support strength and stability of the entire support mechanism on both sides of the non-backfilling post-pouring strip 2 for the structure on both sides of the post-pouring strip 2.

[0041] 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 support mechanism for both sides of a post-cast strip without backfilling, characterized in that: The system includes a casting template (1) and a post-cast strip (2) on the casting template (1). A support pipe (3) is provided on both sides of the width direction of the post-cast strip (2), with one end abutting against the casting template (1) and the other end abutting against the ground. Multiple support pipes (3) are provided on each side along the length direction of the post-cast strip (2). A casting hole (4) is provided at the abutment point between the casting template (1) and the end of any support pipe (3). Concrete is injected into the support pipe (3) through the casting hole (4) and solidifies into a column.

2. The support mechanism on both sides of the post-cast strip without backfilling as described in claim 1, characterized in that: The casting template (1) includes a secondary beam template (11) and a foundation template (12). The post-cast strip (2) is opened on the foundation template (12) between two adjacent secondary beam templates (11). The support pipes (3) arranged on both sides along the width direction of the post-cast strip (2) are a first support pipe (31) and a second support pipe (32), respectively. The ends of the first support pipe (31) and the second support pipe (32) close to the casting template (1) respectively form an abutment fit with the foundation template (12) and the secondary beam template (11).

3. The support mechanism on both sides of the post-cast strip without backfilling as described in claim 1, characterized in that: The support tube (3) is provided with a positioning element (5) at one end that abuts against the ground, and the positioning element (5) abuts against and limits the ground.

4. The support mechanism on both sides of the post-cast strip without backfilling as described in claim 1, characterized in that: The support tube (3) is provided with an overflow port (6) at one end near the pouring hole (4), and the overflow port (6) and the pouring hole (4) are connected in an interlocking manner.

5. The support mechanism for both sides of the post-cast strip without backfilling as described in claim 4, characterized in that: The support pipe (3) is provided with pads (7) on both sides of the overflow port (6), and any one of the pads (7) forms an abutment fit with the casting template (1).

6. The support mechanism on both sides of the post-cast strip without backfilling as described in claim 1, characterized in that: The support tube (3) has an assisted incision (8) at one end near the ground.

7. The support mechanism on both sides of the post-cast strip without backfilling as described in claim 1, characterized in that: The support tube (3) is provided with a reinforcing component (9).

8. The support mechanism on both sides of the post-cast strip without backfilling as described in claim 7, characterized in that: The reinforcing component (9) includes a steel bar support frame (91) and a reinforcing rib (92). There are two steel bar support frames (91), and the two ends of the reinforcing rib (92) are respectively detachably connected to the steel bar support frame (91).