Top plate post-cast strip formwork-free tool
Through the embedded tie rod and trapezoidal tie rod structure of the back-pouring tape of the roof plate rear casting tape, the complex space occupation and operation problems in traditional construction methods are solved, the construction efficiency and quality are improved, the cost is reduced, and the resource reuse is realized.
Patent Information
- Application Number
- CN202411363367.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2024-12-13
AI Technical Summary
The traditional roof panel rear casting belt construction method occupies a large space, is complex in construction operations, is low in efficiency, and is cost-effective.
A mold-free tool for supporting the top plate rear casting tape is designed, using embedded pull rods, trapezoidal pull rods and bottom mold structures to replace the traditional support mold system to achieve rapid positioning and installation, reduce the use of steel pipes, and avoid the removal of formwork.
It improves construction efficiency and quality, reduces costs, simplifies construction operations, realizes resource reuse, and avoids the problems of construction space occupation and time extension.
Smart Images
Figure CN119122264A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of building construction, and in particular provides a formwork-free tool for a top plate post-casting strip. Background Art
[0002] At present, in the field of building construction, the construction of the top slab post-casting strip is a common and important step. The traditional post-casting strip construction method requires a large amount of supporting materials such as steel pipes, which not only increases the construction cost, but also occupies a large amount of construction space, making the construction operation complicated and inefficient. Therefore, the present invention proposes a top slab post-casting strip formwork-free tool, which aims to solve the shortcomings of the traditional method and achieve high efficiency, convenience and cost saving in the construction of the post-casting strip. Summary of the invention
[0003] The purpose of the present invention is to provide a formwork-free tool for a top plate post-casting strip, which solves the problems of large occupied space, complicated construction operation and low efficiency.
[0004] The present invention realizes the formwork-free operation during the construction of the post-casting strip through a simple structural design. The tool is processed and manufactured in advance, and there is no need to remove the formwork after the construction of the post-casting strip is completed. The tool mainly consists of a pre-buried tie rod, a diagonal tie rod structure, a bottom mold, etc., which together form a post-casting strip formwork support system, thereby realizing the formwork-free operation of the top plate post-casting strip. The tool can be customized according to the shape and size of the post-casting strip, is easy to operate, can achieve rapid positioning and installation, reduces the use of a large number of steel pipes, avoids the problem of taking up construction time by using a traditional formwork system, and improves construction progress, construction quality, safety and reliability, and saves costs.
[0005] The present invention comprises a bottom mold 1, a cross bar 9 and a tie rod assembly, a sealing strip 10, and a mold-free quick-closing net 11; the tie rod assembly comprises a pre-buried tie rod 8, a 45° tie rod 2 and a 60° tie rod 3; one end of the 45° tie rod 2 and the 60° tie rod 3 are respectively welded to the pre-buried tie rod 8 at an angle of 45° and 60°, and the other end is welded to the cross bar 9, and the cross bar 9 is welded to the bottom mold 1.
[0006] The tie rod structure is composed of the 45° tie rod 2, the 60° tie rod 3, the embedded tie rod 8 and the cross rod 9; the bottom mold structure is composed of the cross rod 9, the bottom mold 1 and the sealing strip 10; the quick and easy closing net 11 that does not require mold removal independently forms the side mold structure of the concrete structure on both sides of the post-casting belt.
[0007] The embedded tie rod 8 is fixed in advance in the concrete structure 6 on both sides of the post-casting strip by embedded method, which plays a key role in the overall stability of the tool. The tie rod assembly is set up every 500mm along the longitudinal direction of the post-casting strip. When the floor thickness is greater than 300mm, the spacing needs to be reduced to 300mm-400mm;
[0008] The 45° tie rod 2, 60° tie rod 3 and embedded tie rod 8 are all made of φ12 steel bars, which are convenient for local materials and easy to operate. The bottom mold 1 is a 3mm thick steel plate or a corrugated galvanized steel plate. The closing templates of the concrete structure 6 on both sides of the post-casting belt adopt a quick and easy closing net 11 without dismantling the mold. The cross bar 9 is a φ12 steel bar or a 30*30 square steel.
[0009] The embedded tie rod 8, 45° tie rod 2 and 60° tie rod 3 are welded by double-sided welding 5d to form a whole; the anchoring length of the embedded tie rod 8 must meet the requirements of the specifications and the anchoring length must not be less than 420mm; the 45° tie rod 2 and 60° tie rod 3 are welded to the cross bar 9 (double-sided welding 5d), and then connected to the bottom mold 1 through the cross bar 9. When the bottom mold 1 uses 3mm thick steel plate, a welding connection form (double-sided welding 5d) is adopted. When the bottom mold 1 uses corrugated steel plate, an anchor bolt connection form can be adopted.
[0010] The cross bar 9 is connected to the bottom mold 1 so that the bottom mold is evenly stressed, while increasing the integrity of the tool and ensuring its mechanical stability. The bottom surface of the bottom mold 1 is on the same horizontal plane as the bottom surfaces of the concrete structures 6 on both sides of the post-cast strip, forming a closure below the post-cast strip.
[0011] The two sides of the post-casting strip adopt the formwork-free quick-closing net to ensure the quality of the concrete structure closing on both sides of the post-casting strip, and form a U-shaped closure of the post-casting strip together with the bottom mold 1.
[0012] A sealing strip 10 is provided between the bottom mold 1 and the concrete structures 6 on both sides of the post-casting strip, which is conducive to structural stability. Through this structure, the gap between the concrete structures 6 on both sides of the post-casting strip and the bottom mold 1 is closed, and the influence of the deformation of part of the post-casting strip on the tool is offset, ensuring the normal use of the tool.
[0013] The above-mentioned method of using the embedded tie rod 8 and the bottom mold 1 to replace the existing post-casting strip formwork method reduces the use of a large number of steel pipes and formworks, eliminates the construction step of removing the formwork, simplifies the operation, and improves the construction efficiency.
[0014] The construction of the top slab post-casting strip without formwork tool includes the following steps:
[0015] Step 1: Accurately make the formwork-free tool for the top slab post-casting strip according to the drawings, make the bottom mold 1 according to the width of the post-casting strip, and control the length and position of the embedded tie rod 8, 45° tie rod 2 and 60° tie rod 3 according to the thickness of the floor slab. The anchoring length of the embedded tie rod 8 must meet the requirements of the specification and the anchoring length must not be less than 420mm;
[0016] Step 2: Accurately locate the post-casting strip, fix the top plate post-casting strip formwork-free tool in the located post-casting strip area, and paste the sealing strip 10 at the intersection of the bottom mold 1 and the concrete structures 6 on both sides. The design here offsets the extrusion of the top plate post-casting strip formwork-free tool caused by the deformation of the post-casting strip, compensates for the gap generated here after the deformation of the post-casting strip, prevents leakage here when pouring concrete in the post-casting strip, and avoids the quality problem of concrete pouring in the post-casting strip:
[0017] Step 3: According to the specification requirements, the steel bars in the post-casting strip must be arranged throughout the length. After this tool is installed, the post-casting strip structural steel bars 4 and water-stop steel plates 5 are constructed. The formwork on both sides of the post-casting strip adopts a quick and easy closing net 11 that does not require demolding to improve the pouring quality of the concrete structure 6 on both sides of the post-casting strip, avoids the disturbance of the post-casting strip formwork-free tool on the top plate when the formwork on both sides of the post-casting strip is removed, and improves the overall stability:
[0018] Step 4: Before pouring concrete on both sides of the post-casting strip, the concrete structure 6 needs to be protected with a post-casting strip cover to prevent pollution during the concrete pouring process and to prevent garbage from entering the post-casting strip before pouring the post-casting strip. After the concrete is poured, timely maintenance is carried out.
[0019] Step 5: When the concrete pouring date of the post-casting belt reaches the requirement, pour the concrete of the post-casting belt and perform maintenance in time. At this point, all the construction processes of the post-casting belt free formwork tool for the top plate are completed. When the concrete strength of the post-casting belt reaches the design requirements, the next step of construction can be carried out.
[0020] The present invention has the following technical effects:
[0021] The conventional post-cast strip support system has been updated. The overall structure is very simple, easy to manufacture and process, convenient and quick to construct, stable and reliable to use. The embedded tie rods 8, 45° tie rods 2, 60° tie rods 3 and cross bars 9 are common steel bars or small steel sections on the construction site, which are convenient for local materials and resource recycling, reducing the use of a large number of steel pipes and formworks, and solving the problem of the support system at the post-cast strip occupying the construction space for a long time and the long support time affecting the overall construction. It effectively improves the construction efficiency and reduces the construction cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 : Schematic diagram of the plan layout of formwork-free tools for post-casting strips of top slabs.
[0023] Figure 2 : Figure 1 Middle AA section view.
[0024] Figure 3 : Figure 2 A partial enlarged view of node B in the middle.
[0025] Figure 4 : Figure 2A partial enlarged view of the C node in the middle.
[0026] In the figure, bottom formwork 1, 45° tie rod 2, 60° tie rod 3, post-cast strip structural steel bars 4, water-stop steel plate 5, concrete structures on both sides of the post-cast strip 6, post-cast strip construction joint 7, embedded tie rods 8, cross bars 9, sealing strips 10, and quick-closing net 11 that does not require demolding. DETAILED DESCRIPTION
[0027] The present invention is now further described in conjunction with the accompanying drawings to make the design concept, technical solutions and advantages of the present invention clearer.
[0028] like Figure 1-Figure 4 As shown, the formwork-free tool for the top slab post-cast strip includes a tie rod structure composed of a 45° tie rod 2, a 60° tie rod 3, an embedded tie rod 8, and a cross bar 9; the cross bar 9, the bottom mold 1 and the sealing strip 10 form a bottom mold structure; the quick and easy closing net 11 that does not require disassembly forms independently forms the side mold structure of the concrete structure on both sides of the post-cast strip.
[0029] The 45° tie rod 2, 60° tie rod 3 and embedded tie rod 8 are all made of φ12 steel bars, which are convenient for local materials and easy to operate. The bottom mold 1 is a 3mm thick steel plate or a corrugated galvanized steel plate. The closing templates of the concrete structure 6 on both sides of the post-casting belt adopt a quick and easy closing net 11 without dismantling the mold. The cross bar 9 is a φ12 steel bar or a 30*30 square steel.
[0030] The embedded tie rod 8 is welded with the 45° tie rod 2 and the 60° tie rod 3 to form a whole; the 45° tie rod 2 and the 60° tie rod 3 are welded with the cross bar 9, and then connected to the bottom mold 1 through the cross bar 9, and the connection is made by welding (the bottom mold 1 is a steel plate) and anchor bolts (the bottom mold 1 is a corrugated steel plate), thereby forming the entire tie rod structure system.
[0031] The cross bar 9 is connected to the bottom mold 1 so that the bottom mold is evenly stressed, while increasing the integrity of the tool and ensuring its mechanical stability. The bottom surface of the bottom mold 1 and the bottom surfaces of the concrete structures 6 on both sides of the post-cast strip are at the same horizontal plane. A sealing strip 10 is provided between the concrete structures 6 on both sides of the post-cast strip and the bottom mold 1. The concrete structures 6 on both sides of the post-cast strip are closed with a quick and easy closing net 11 that does not require demolding, thereby forming a U-shaped closure in the post-cast strip.
[0032] The sealing strip between the bottom mold 1 and the concrete structure 6 on both sides of the post-cast strip is conducive to structural stability, that is, the gap between the concrete structure 6 on both sides of the post-cast strip and the bottom mold 1 is closed, and at the same time, the influence of the deformation of the post-cast strip on the tool is offset to ensure the normal use of the tool.
[0033] Before pouring concrete on the concrete structure 6 on both sides of the post-casting strip, a post-casting strip cover plate is needed to protect the top plate post-casting strip formwork-free tool to prevent pollution during concrete pouring and to prevent garbage from entering the top plate post-casting strip formwork-free tool before pouring the post-casting strip. After the concrete is poured, timely maintenance is carried out.
[0034] When the concrete pouring date of the concrete structure 6 on both sides of the post-casting belt reaches the requirements, pour the post-casting belt concrete and perform maintenance in time. At this point, all the construction processes of the top plate post-casting belt free formwork tools are completed, and the next step of construction can be carried out after the concrete strength of the post-casting belt reaches the design requirements.
[0035] The present invention updates the conventional post-cast strip support system, and the overall structure is very simple, easy to manufacture and process, convenient and quick to construct, stable and reliable to use. The embedded tie rods 8, 45° tie rods 2, 60° tie rods 3 and cross bars 9 are common steel bars or small-shaped steel sections on the construction site, which are convenient for local materials and resource recycling and reuse, reducing the use of a large number of steel pipes and templates, and solving the problem that the support system at the post-cast strip occupies the construction space for a long time and the support time is too long to affect the overall construction, effectively improving the construction efficiency and reducing the construction cost.
[0036] The above description is only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, improvements and replacements made by those skilled in the art in combination with existing common knowledge, such as changes in the base mold material, the material of the tie rod, the number of the tie rods, etc., all fall within the scope of protection of the present invention.
Claims
1. A formwork-free tool for top slab post-casting strips. It is characterized in that It comprises a bottom mold (1), a cross bar (9), a tie rod assembly, a sealing strip (10), and a mold-free quick-closing net (11); the tie rod assembly comprises a pre-buried tie rod (8), a 45° tie rod (2), and a 60° tie rod (3); one end of the 45° tie rod (2) and the 60° tie rod (3) are respectively welded to the pre-buried tie rod (8) at an angle of 45° and 60°, and the other end is welded to the cross bar (9), and the cross bar (9) is welded to the bottom mold (1); A tie rod structure is composed of a 45° tie rod (2), a 60° tie rod (3), a pre-buried tie rod (8), and a cross rod (9); a bottom mold structure is composed of the cross rod (9), a bottom mold (1) and a sealing strip (10); and a quick-closing net (11) that does not require mold removal independently forms a side mold structure for the concrete structure on both sides of the post-casting strip.
2. The top plate post-casting strip formwork-free tool according to claim 1, It is characterized in that The embedded tie rod (8), 45° tie rod (2) and 60° tie rod (3) are welded together by double-sided 5d welding to form a whole; the anchoring length of the embedded tie rod (8) must meet the requirements of the specification and the anchoring length must not be less than 420 mm; the 45° tie rod (2) and 60° tie rod (3) are welded to the cross bar (9) by double-sided 5d welding; they are connected to the bottom mold (1) through the cross bar (9); when the bottom mold (1) is made of 3 mm thick steel plate, a double-sided 5d welding connection is adopted; when the bottom mold (1) is made of corrugated steel plate, an anchor bolt connection is adopted.
3. The top plate post-casting strip formwork-free tool according to claim 1, It is characterized in that The 45° tie rod (2), 60° tie rod (3) and embedded tie rod (8) are all made of φ12 steel bars, and the bottom mold (1) is a 3mm thick steel plate or a corrugated galvanized steel plate; the closing templates of the concrete structure (6) on both sides of the post-cast strip adopt a quick and easy closing net (11) that does not require demolding, and the cross bar (9) is a φ12 steel bar or a 30*30 square steel.
4. The top plate post-casting strip formwork-free tool according to claim 1, It is characterized in that The cross bar (9) is connected to the bottom mold (1) so that the bottom mold is subjected to uniform force, while increasing the integrity of the tool and ensuring its mechanical stability. The bottom surface of the bottom mold (1) and the bottom surfaces of the concrete structures (6) on both sides of the post-cast strip are in the same horizontal plane. A sealing strip (10) is provided between the concrete structures (6) on both sides of the post-cast strip and the bottom mold (1). The concrete structures (6) on both sides of the post-cast strip are closed with a quick and easy closing net (11) that does not require mold removal, thereby forming a U-shaped closure of the post-cast strip.
5. The top plate post-casting strip formwork-free tool according to claim 1, It is characterized in that The construction using this tool includes the following steps: Step 1: According to the drawings, accurately make the formwork-free tool for the top slab post-casting strip, make the bottom mold (1) according to the width of the post-casting strip, and control the length and position of the embedded tie rod (8) and the 45° tie rod (2) and the 60° tie rod (3) according to the thickness of the floor slab. The anchoring length of the embedded tie rod (8) must meet the requirements of the specification and the anchoring length must not be less than 420 mm; Step 2: Accurately locate the post-casting strip position, fix the top plate post-casting strip formwork-free tool in the located post-casting strip area, and paste the sealing strip (10) at the junction of the bottom mold (1) and the concrete structures (6) on both sides. The design here offsets the extrusion of the top plate post-casting strip formwork-free tool caused by the deformation of the post-casting strip, compensates for the gap generated here after the deformation of the post-casting strip, prevents leakage of concrete here when pouring concrete in the post-casting strip, and avoids the quality problem of concrete pouring in the post-casting strip: Step 3: After the tool is installed, the structural steel bars (4) and the water-stop steel plate (5) of the post-casting strip are constructed. The formwork on both sides of the post-casting strip adopts a quick and easy closing net (11) that does not require demolding, thereby improving the pouring quality of the concrete structure (6) on both sides of the post-casting strip, avoiding the disturbance of the post-casting strip formwork-free tool on the top plate when the formwork on both sides of the post-casting strip is removed, thereby improving the overall stability: Step 4: Concrete structures on both sides of the post-casting strip (6) Before pouring concrete, a post-casting strip cover plate is required to protect the top plate post-casting strip formwork-free tool to prevent pollution during concrete pouring and prevent garbage from entering the top plate post-casting strip formwork-free tool before pouring the post-casting strip. After pouring the concrete, timely maintenance is performed; Step 5: When the pouring date of the post-casting zone concrete reaches the requirement, pour the post-casting zone concrete and carry out maintenance in time. At this point, all the construction processes of the top plate post-casting zone formwork-free tools are completed. After the concrete strength of the post-casting zone reaches the design requirements, proceed to the next step of construction.