Mould expansion preventing and supporting structure for connection post-pouring section of laminated slab
By setting up reinforcement plates and clamping steel strands on the formwork, the problem of formwork expansion during the concrete pouring process of the after-cast section of the laminated plate is solved, which improves the construction quality and reduces costs.
Patent Information
- Application Number
- CN202421195809.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-29
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-05-29
AI Technical Summary
In the construction of prefabricated concrete structures, during the pouring process of the concrete section of the laminated plate connection, the formwork is prone to expanding due to the gravity of the concrete, resulting in a decrease in construction quality and an increase in cost.
By setting a reinforcement plate on the template and clamping steel strands between the template and the secondary keel, the structural strength and bearing capacity of the template are enhanced to avoid the deformation and expansion of the template.
The deformation and expansion problems of the formwork when pouring the concrete in the pouring section after pouring is effectively avoided, the construction quality is improved, and the increase in secondary treatment and construction costs are reduced.
Smart Images
Figure CN222435865U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of formwork engineering, and in particular to a composite slab connection post-casting section anti-expansion formwork support structure. Background Art
[0002] In the construction of prefabricated concrete structures, when the composite slab construction technology is adopted, the composite slab is installed first, then the steel bars are tied on the prefabricated slab, professional embedded parts are installed, and finally the post-cast section concrete between the two composite slabs is poured; the prefabricated slab and the post-cast section are combined into a whole to form a floor slab.
[0003] Before pouring the post-cast concrete, the slab strip between the two superimposed slabs needs to be sealed; when sealing the slab strip, a commonly used sealing method is to set up scaffolding supports at the bottom of the floor slab, set up sealing formwork on the supports, and by adjusting the height of the supports, the formwork surface is pressed against the bottom surface of the superimposed slab to seal from the bottom of the slab strip.
[0004] However, during the pouring process, the formwork will expand due to the gravity of the concrete. After the formwork is removed, secondary processing is required, which affects the construction quality and increases the construction cost. Utility Model Content
[0005] In order to improve the problem of formwork expansion during the pouring process of the post-casting section, the present application provides a composite plate connected to the post-casting section anti-expansion formwork support structure.
[0006] The present application provides an auxiliary paving device for wall tiles, which adopts the following technical solution:
[0007] A composite slab connected to a post-casting section anti-expansion formwork support structure, comprising a scaffold, a main keel, a secondary keel and a template, wherein the scaffold is erected on a floor slab and is located at a post-casting section, the main keel is installed on the scaffold, the secondary keel is installed on the main keel, and the secondary keel is perpendicular to the main keel, the template is arranged on the secondary keel, and a reinforcing plate is arranged on the side of the template away from the secondary keel
[0008] By adopting the above technical solution, a reinforcing plate is set on the formwork, thereby strengthening the structural strength of the formwork, thereby improving the bearing capacity of the formwork, and preventing the formwork from being deformed when pouring the post-cast concrete, thereby avoiding the problem of formwork expansion.
[0009] Optionally, a steel strand is clamped between the secondary keel and the formwork, and the steel strand is tightened.
[0010] By adopting the above technical solution, the steel strands can support the formwork, further enhancing the bearing capacity of the formwork, thereby avoiding the expansion of the formwork.
[0011] Optionally, a groove is provided on the secondary keel, and the steel strand is located in the groove.
[0012] By adopting the above technical solution, the steel strand is placed in the groove, so that the steel strand is fixed more securely.
[0013] Optionally, the groove is an arc-shaped groove.
[0014] By adopting the above technical solution, the arc-shaped groove can make the steel strand protrude from the top surface of the secondary keel, so that when the template and the secondary keel are fixed, the template and the secondary keel can clamp the steel strand more tightly.
[0015] Optionally, the width of the reinforcement plate is the same as the width of the post-casting section.
[0016] Optionally, the reinforcing plate is made of a 3 mm thick PVC plate.
[0017] By adopting the above technical solution, the PVC board has high hardness and light weight, and can effectively increase the strength of the template.
[0018] Optionally, the reinforcing plate is bonded and fixed to the template.
[0019] By adopting the above technical solution, the fixing method is simple and easy to operate.
[0020] Optionally, a sealing strip is provided on the template, and the sealing strip is located on both sides of the reinforcing plate.
[0021] By adopting the above technical solution, leakage of concrete can be avoided when pouring the post-casting section concrete.
[0022] In summary, the present application includes at least one of the following beneficial technical effects:
[0023] 1. A reinforcement plate is set on the formwork to strengthen the structural strength of the formwork, thereby improving the bearing capacity of the formwork. When pouring the post-casting concrete, the formwork can be prevented from deformation, thereby avoiding the problem of mold expansion;
[0024] 2. The steel strands can support the formwork, further enhancing the bearing capacity of the formwork, thereby avoiding the expansion of the formwork;
[0025] 3. Place the steel strand in the groove to make it more securely fixed. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 It is a schematic diagram of the cross-sectional structure of an embodiment of the present application.
[0027] Figure 2 It is a schematic diagram of the cross-sectional structure of the secondary keel in an embodiment of the present application.
[0028] Explanation of the reference numerals in the accompanying drawings: 1. Steel pipe column; 2. U-bracket; 3. Main keel; 4. Secondary keel; 41. Groove; 5. Formwork; 6. Reinforcement plate; 7. Steel strand; 8. Composite plate; 9. Post-cast section. DETAILED DESCRIPTION
[0029] The following is combined with Figure 1-2 This application is described in further detail.
[0030] The embodiment of the present application discloses a composite plate connecting the post-casting section anti-expansion formwork support structure. Figure 1 and Figure 2 The composite plate is connected to the anti-expansion formwork structure of the post-casting section, including a scaffold, a main keel 3, a secondary keel 4, a formwork 5 and a reinforcement plate 6.
[0031] The scaffolding includes steel pipe columns 1, connecting rods connected between adjacent steel pipe columns 1, and U brackets 2 installed on the top of the steel pipe columns 1. The scaffolding is a conventional scaffolding support system erection structure, which will not be described in detail.
[0032] A plurality of main purlins 3 are evenly spaced along the length direction of the post-casting section 9, and the main purlins 3 are installed on the U-support 2. A plurality of secondary purlins 4 are also evenly spaced, and the secondary purlins 4 are arranged on the main purlins 3. The secondary purlins 4 and the main purlins 3 are arranged perpendicular to each other, and the length direction of the secondary purlins 4 is arranged in the same direction as the length direction of the post-casting section 9. The template 5 is laid on the secondary purlin 4, and the template 5 and the secondary purlin 4 are fixed with nails. The template 5 is made of 1 cm thick plywood. The width of the template 5 is greater than the width of the post-casting section 9, so that the side of the template 5 facing away from the secondary purlin is attached to the bottom of the two adjacent composite plates 8 to block the position of the post-casting section 9.
[0033] The reinforcing plate 6 is made of a 3 mm thick PVC plate, and is pasted and fixed in the middle position of the formwork 5. The length of the reinforcing plate 6 is the same as the length of the formwork 5, and the width of the reinforcing plate 6 is the same as the width of the post-casting section 9. The reinforcing plate 6 can strengthen the strength of the formwork 5 at the position of the post-casting section 9, thereby improving the bearing capacity of the formwork 5 to the concrete.
[0034] A groove 41 is provided on one side of the secondary keel 4 facing the template 5. There are a plurality of grooves 41, and the plurality of grooves 41 are evenly spaced along the length direction of the secondary keel 4. The groove 41 is an arc-shaped groove. The steel strand 7 is placed in the groove 41, and the steel strand 7 is vertically arranged to the secondary keel 4. While fixing the template 5 and the secondary keel 4, the steel strand 7 is tightened so that the steel strand 7 has a certain supporting effect on the template 5, thereby further strengthening the bearing capacity of the template 5.
[0035] Two sealing strips are also provided on the side of the formwork 5 away from the secondary keel 4. The sealing strips are arranged along the length direction of the post-casting section 9, and the two sealing strips are respectively located on both sides of the reinforcing plate 6. The sealing strips play a sealing role to prevent leakage when pouring concrete in the post-casting section 9.
[0036] The implementation principle of the anti-expansion formwork structure of the composite slab connected to the post-casting section in the embodiment of the present application is as follows: a reinforcing plate 6 is arranged on the top surface of the formwork 5 to strengthen the structural strength of the formwork 5, and a tensioned steel strand 7 is arranged between the formwork 5 and the secondary keel 4 to further strengthen the bearing capacity of the formwork 5, so that during the pouring of the concrete of the post-casting section 9, the formwork 5 will not have the problem of expanding the formwork, thereby improving the construction quality, avoiding secondary processing, and avoiding the increase of construction costs.
[0037] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A composite slab connected to a post-casting section anti-expansion formwork support structure, comprising a scaffold, a main keel (3), a secondary keel (4) and a formwork (5), wherein the scaffold is erected on a floor slab and is located at a post-casting section (9), the main keel (3) is mounted on the scaffold, the secondary keel (4) is mounted on the main keel (3), and the secondary keel (4) and the main keel (3) are perpendicular to each other, and the formwork (5) is arranged on the secondary keel (4), characterized in that: A reinforcing plate (6) is provided on a surface of the template (5) facing away from the secondary keel (4).
2. The anti-bulging formwork structure for the post-casting section of the composite slab connection according to claim 1 is characterized in that: A steel strand (7) is clamped between the secondary keel (4) and the template (5), and the steel strand (7) is tightened.
3. The anti-expansion formwork structure for the post-casting section of the composite slab connection according to claim 2 is characterized in that: The secondary keel (4) is provided with a groove (41), and the steel strand (7) is located in the groove (41).
4. The anti-expansion formwork structure for the post-casting section of the composite slab connection according to claim 3 is characterized in that: The groove (41) is an arc-shaped groove.
5. The anti-expansion formwork structure for the post-casting section of the composite slab connection according to claim 1 is characterized in that: The width of the reinforcing plate (6) is the same as the width of the post-casting section (9).
6. The anti-expansion formwork structure for the post-casting section of the composite slab connection according to claim 1 is characterized in that: The reinforcing plate (6) is made of a 3mm thick PVC plate.
7. The anti-expansion formwork structure for the post-casting section of the composite slab connection according to claim 1 is characterized in that: The reinforcing plate (6) is bonded and fixed to the template (5).
8. The anti-expansion formwork structure for the post-casting section of the composite slab connection according to claim 1 is characterized in that: The template (5) is provided with a sealing strip, and the sealing strip is located on both sides of the reinforcing plate (6).