A post-casting strip formwork support system for dismantling and re-topping

Abstract

The present invention relates to the field of building support technology, and discloses a post-casting strip formwork support system for dismantling and returning to the top, including a floor post-casting strip, characterized in that a dismantling and returning to the top template is provided below the floor post-casting strip, and non-dismantling templates are provided on both sides of the dismantling and returning to the top template. The present invention provides non-dismantling templates and their supporting frames on both sides of the floor post-casting strip, and only dismantling and returning to the top template and supporting columns at the bottom of the floor post-casting strip are removed. Since the non-dismantling templates and supporting frames are provided on both sides of the floor post-casting strip, it is ensured that the floor concrete structure that has been constructed on both sides of the floor post-casting strip does not form a cantilever structure. At this time, the dismantling and returning to the top template of the floor post-casting strip is removed to roughen and clean the floor concrete joints on both sides of the floor post-casting strip, thereby achieving the effect of facilitating workers' operation, simple construction, convenient operation, shortening construction period, reducing labor input and saving construction costs.

Description

Technical Field

[0001] The invention relates to the technical field of building support, in particular to a post-casting strip formwork support system for returning to the top after demolition. Background Art

[0002] With the development of cities and the continuous improvement of living standards, there are more and more high-rise and super-high-rise buildings, whose underground garages and group houses have large single-story areas and many post-cast strips. The common practice of post-cast strip construction of floor slabs is to support the post-cast strip formwork separately, and do not remove the independently supported post-cast strip formwork when the floor slab formwork is removed after the concrete is poured on both sides of the post-cast strip. When the post-cast strip can be closed, the concrete on both sides of the post-cast strip is chiseled, and the concrete slag chiseled out of the post-cast strip is cleaned. However, when the concrete on both sides of the post-cast strip is chiseled and cleaned, since the post-cast strip formwork cannot be removed, it is difficult to chisel the concrete slurry and loose stones at the bottom of the floor slab. It is very difficult to manually clean the concrete slag and cement dust produced by chiseling, and it cannot be cleaned up. Therefore, in some projects with poor management, workers simply remove all the original independently supported post-cast strip formworks, chisel and clean the concrete on both sides of the post-cast strip, and then reinstall the post-cast strip formwork, which violates the regulations that the post-cast strip is not allowed to be removed before the concrete is poured. According to conventional construction methods, it is difficult to chisel out the concrete on both sides of the post-cast joint of the floor slab, and it is difficult to clean the cement slurry and concrete slag in the post-cast joint. At the same time, the labor input is large, the cost is increased, and the construction period is extended. Summary of the invention

[0003] In order to achieve the above object, the present invention adopts the following technical solutions:

[0004] A post-cast strip formwork support system for dismantling and returning to the top comprises a floor post-cast strip, a post-cast strip for dismantling and returning to the top formwork is arranged below the floor post-cast strip, non-dismantled formworks are arranged on both sides of the post-cast strip for dismantling and returning to the top formwork, floor formworks are arranged on the sides of the two non-dismantled formworks away from each other, isolation strips are fixedly connected to the bottom of the floor post-cast strip, floor concrete is arranged on both sides of the post-cast strip for dismantling, an adjustable support is arranged at the bottom of the post-cast strip for dismantling, and a supporting column is fixedly connected to the bottom of the adjustable support.

[0005] Preferably, a rectangular groove connected to the right side of the rear-returning-to-top template is opened on the left side of the dismantling rear-returning-to-top template, and two symmetrical sliding grooves are opened on the left and right sides of the inner surface of the back side of the rectangular groove. The inner surfaces of the two sliding grooves on each side are slidably connected with a pushing rod, and the end of the pushing rod away from the sliding groove passes through the rectangular groove and is fixedly connected with a fitting plate.

[0006] Preferably, a control groove connected to the inner surface of the bottom of the rectangular groove is formed at the bottom of the template for returning to the top after disassembly, and a mounting bearing seat located directly above the control groove is fixedly connected to the inner surface of the top of the rectangular groove, and a rotating rod is fixedly connected to the inner surface of the bottom of the mounting bearing seat, and the bottom end of the rotating rod passes through the control groove and is fixedly connected to a rotating disk, and a control handle is fixedly connected to the bottom of the rotating disk, and two reset pipes located on the left and right sides of the rotating disk and symmetrically centered are fixedly connected to the bottom of the template for returning to the top after disassembly, a reset spring is fixedly connected to the inner wall of the reset pipe, and a transmission rod is fixedly connected to both sides of the left and right sides of the rotating disk, and the transmission rod extends to the interior of the reset pipe at one end away from the rotating disk.

[0007] Preferably, the sides of the bonding plates on both sides close to each other are fixedly connected with a middle rod, the ends of the middle rods on both sides close to each other are fixedly connected with elastic bands, and the ends of the elastic bands away from the middle rods are bolted to the outer surface of the rotating rod.

[0008] Preferably, the bottom of the dismantled top return template is provided with an annular groove located outside the control groove, and the top of the rotating disk is slidably connected to the inner surface of the annular groove through a stabilizing rod.

[0009] Preferably, the reset pipe and the lower surface of the transmission rod are both in arc shape, and the arc angle of the reset pipe and the lower surface of the transmission rod is between sixty degrees and ninety degrees.

[0010] Preferably, a sliding pad is fixedly connected to the inner surface of the sliding groove, and a sliding pad is fixedly connected to the outer surface of the pushing rod.

[0011] Preferably, the connection between the laminating plate and the pushing rod is a threaded connection.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] (1) The present invention sets non-removable formwork and its supporting frame on both sides of the post-casting strip of the floor slab, and only removes the post-returning formwork and supporting columns at the bottom of the post-casting strip of the floor slab. Since the non-removable formwork and the supporting frame on both sides of the post-casting strip of the floor slab are not removed, it is ensured that the floor slab concrete structure that has been constructed on both sides of the post-casting strip of the floor slab does not form a cantilever structure. At this time, the post-returning formwork of the post-casting strip of the floor slab is removed to roughen and clean the floor slab concrete joints on both sides of the post-casting strip of the floor slab, thereby achieving the effects of convenient operation for workers, simple construction, convenient operation, shortening construction period, reducing labor input and saving construction costs.

[0014] (2) The present invention uses the bonding plate to bond the two sides without removing the template, thereby ensuring the stability during installation, thereby improving the overall operation stability by improving the installation stability.

[0015] (3) The present invention controls the rotating disk to rotate by controlling the handle. The rotation of the rotating disk causes the bonding plates on both sides to be retracted into the rectangular grooves, thereby flexibly retracting the plates into the rectangular grooves to facilitate disassembly, thereby improving operating efficiency and saving staff time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a cross-sectional view of the support system of the post-dismantling return formwork of the present invention;

[0017] Figure 2 This is a schematic diagram of the structure before the post-cast strip of the present invention is removed;

[0018] Figure 3 This is a cross-sectional view after the template of the present invention is removed;

[0019] Figure 4 This is a schematic diagram of the structure of the dismantled top-returning template after installation of the present invention;

[0020] Figure 5 This is a front view structural diagram of the dismantled top return template of the present invention;

[0021] Figure 6 For the present invention Figure 5 A in the enlarged view;

[0022] Figure 7 For the present invention Figure 5 The enlarged view of point B in the figure;

[0023] Figure 8 It is a bottom view of the rotating disk of the present invention.

[0024] In the figure: 1. Floor post-cast strip; 2. Removal of the top formwork; 3. The formwork is not removed; 4. Floor formwork; 5. Isolation strips; 6. Floor concrete; 7. Adjustable supports; 8. Support columns; 9. Rectangular grooves; 10. Control grooves; 11. Mounting bearing seats; 12. Turning rods; 13. Turning disks; 14. Control handles; 15. Reset pipes; 16. Reset springs; 17. Transmission rods; 18. Sliding grooves; 19. Push rods; 20. Laminating plates; 21. Intermediate rods; 22. Elastic bands; 23. Annular grooves; 24. Stabilizing rods. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0026] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] Reference Figure 1-8 A post-casting strip formwork support system for dismantling and returning to the top comprises a floor post-casting strip 1, a post-casting strip 2 for returning to the top after dismantling is arranged below the floor post-casting strip 1, non-dismantling formworks 3 are arranged on both sides of the post-casting strip 2 for returning to the top after dismantling, and floor formworks 4 are arranged on the sides of the two non-dismantling formworks 3 that are far away from each other, an isolation slat 5 is fixedly connected to the bottom of the floor post-casting strip 1, floor concrete 6 is arranged on both sides of the post-casting strip 1 for returning to the top after dismantling, and the post-casting strip 2 for returning to the top after dismantling is arranged on both sides of the post-casting strip 1 for returning to the top after dismantling. An adjustable support 7 is provided at the bottom, and a supporting column 8 is fixedly connected to the bottom of the adjustable support 7. A rectangular groove 9 connected to the right side of the dismantling and returning to the top template 2 is opened on the left side of the dismantling and returning to the top template 2. A control groove 10 connected to the inner surface of the bottom of the rectangular groove 9 is opened at the bottom of the dismantling and returning to the top template 2. A mounting bearing seat 11 located directly above the control groove 10 is fixedly connected to the inner surface of the top of the rectangular groove 9. A rotating rod 12 is fixedly connected to the inner surface of the bottom of the mounting bearing seat 11. The bottom end of the rotating rod 12 passes through the control groove 10 and is fixedly connected to a rotating disk 13. The bottom of the rotating disk 13 is fixedly connected to a control handle 14. The bottom of the dismantling and returning to the top template 2 is fixedly connected to two reset pipes 15 located on the left and right sides of the rotating disk 13 and symmetrically centered. The reset pipe 15 A reset spring 16 is fixedly connected to the inner wall of the rotating disk 13, and a transmission rod 17 is fixedly connected to the left and right sides of the rotating disk 13. The end of the transmission rod 17 away from the rotating disk 13 extends to the inside of the reset pipe 15. The shape of the lower surface of the reset pipe 15 and the transmission rod 17 is arc-shaped, and the curvature of the lower surface of the reset pipe 15 and the transmission rod 17 is between sixty degrees and ninety degrees. Two symmetrical sliding grooves 18 are opened on the left and right sides of the inner surface of the back of the rectangular groove 9. The inner surface of the two sliding grooves 18 on each side is slidably connected to a push rod 19, and the inner surface of the sliding groove 18 is fixedly connected to a sliding pad, and the outer surface of the push rod 19 is fixedly connected to a sliding pad. The end of the push rod 19 away from the sliding groove 18 passes through the rectangular groove 9 and is fixedly connected to a bonding plate 20. The bonding plate 20 The connection between the push rod 19 is a threaded connection, and the sides of the two side bonding plates 20 that are close to each other are fixedly connected with the middle rod 21, and the ends of the two side middle rods 21 that are close to each other are fixedly connected with elastic bands 22, and the ends of the elastic bands 22 away from the middle rod 21 are bolted to the outer surface of the rotating rod 12. The bottom of the disassembled return template 2 is provided with an annular groove 23 located on the outside of the control groove 10, and the top of the rotating disk 13 is slidably connected to the inner surface of the annular groove 23 through a stabilizing rod 24.

[0028] In the present invention, when the user uses the device, the non-removable formwork 3 and its supporting frame are not removed on both sides of the floor post-casting strip 1, and only the post-removal return formwork 2 and the supporting column 8 at the bottom of the floor post-casting strip 1 are removed. Since the non-removable formwork 3 and the supporting frame are not removed on both sides of the floor post-casting strip 1, it is ensured that the floor concrete 6 structure that has been constructed on both sides of the floor post-casting strip 1 does not form a cantilever structure. At this time, the post-removal return formwork 2 of the floor post-casting strip 1 is removed to roughen and clean the joints of the floor concrete 6 on both sides of the floor post-casting strip 1, thereby achieving the effects of convenient operation for workers, simple construction, convenient operation, shortening construction period, reducing labor input and saving construction costs.

[0029] Step 1: During the construction of the floor structure, first, according to the construction drawings, on the concrete basement floor or each floor slab, according to the position and width of the floor slab post-casting strip 1, set up the non-removable formwork 3 and the support frame uprights on both sides of the post-casting strip 1. The width of the non-removable formwork 3 on both sides of the floor slab post-casting strip 1 is about 1000mm. After the support frame is set up, install the non-removable formwork 3 on both sides of the floor slab post-casting strip 1. The non-removable formwork 3 is 50mm away from the edge line of the floor slab post-casting strip 1 on the side close to the floor slab post-casting strip 1. Between the two non-removable formworks 3 is the floor slab post-casting strip 1 dismantling top return formwork 2, and its width is the width of the floor slab post-casting strip 1 plus 100mm. The dismantling top return formwork 2 and the non-removable formwork 3 on both sides must be set separately to ensure that the non-removable formwork 3 on both sides of the post-casting strip can be retained independently when the dismantling top return formwork 2 is removed;

[0030] Step 2: After the rear return formwork 2 is dismantled, the formwork 3 on both sides of the floor slab backcast strip 1 is not dismantled, and the support frame is erected, the position line of the floor slab backcast strip 1 is marked on the formwork surface with an ink fountain, and the 15mm thick and 50mm wide isolation strips 5 are nailed to the rear return formwork 2 on the ink line in the floor slab backcast strip 1 with iron nails;

[0031] Step 3: construct the floor support frame and formwork for the remaining parts of the floor, tie the floor steel bars and reinforced steel bars of the post-casting belt, and pour the concrete of the floor;

[0032] Step 4: When the concrete strength of the beam slab of this floor reaches the demolding strength, the floor slab formwork 4 and the supporting frame of this floor are removed, and the top return formwork 2 and the non-removable formwork 3 on both sides of the post-casting belt are retained and not removed;

[0033] Step 5: When the floor reaches the closed condition of the floor slab post-casting strip 1, first rotate the nut of the adjustable support 7 on the supporting column 8 to move the screw downward, remove the back-up template 2, and then chisel the steel wire mesh and cement slurry on the joints of the floor slab concrete 6 on both sides of the floor slab post-casting strip 1, clean up the chiseled cement residue, and rinse the concrete joints of the floor slab post-casting strip 1;

[0034] Step 6: After the floor slab backcast strip 1 is chiseled and cleaned, the dismantled back-top template 2 is re-placed at the position of the floor slab backcast strip 1, and the nut of the adjustable support 7 on the support column 8 is rotated to move the screw of the adjustable support 7 upward, and the dismantled back-top template 2 is tightened and reset;

[0035] Step 7: After the back-to-top formwork 2 is installed, restore the steel bars of the floor slab post-casting strip 1 and pour the post-casting strip concrete. After the strength of the post-casting strip concrete 6 reaches the demolding strength, remove the floor slab post-casting strip 1 and the two sides of the floor slab post-casting strip 1 without removing the formwork 3 and the support frame.

[0036] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

Claims

1. A post-cast strip formwork support system for dismantling and re-topping, comprising a floor post-cast strip (1), characterized in that: A dismantled top-returning formwork (2) is arranged below the post-cast floor strip (1), and non-dismantled formwork (3) is arranged on both sides of the dismantled top-returning formwork (2), and a floor formwork (4) is arranged on the sides of the two non-dismantled formworks (3) that are away from each other, an isolation slat (5) is fixedly connected to the bottom of the post-cast floor strip (1), and floor concrete (6) is arranged on both sides of the post-cast floor strip (1), and an adjustable support (7) is arranged at the bottom of the dismantled top-returning formwork (2), and a supporting column (8) is fixedly connected to the bottom of the adjustable support (7); A rectangular groove (9) is provided on the left side of the dismantling top-returning template (2), and the rectangular groove (9) is connected to the left and right sides of the dismantling top-returning template (2). Two symmetrical sliding grooves (18) are provided on the left and right sides of the inner surface of the back of the rectangular groove (9), and the inner surfaces of the two sliding grooves (18) on each side are slidably connected to a push rod (19), and one end of the push rod (19) away from the sliding groove (18) passes through the rectangular groove (9) and is fixedly connected to a bonding plate (20); A control groove (10) communicating with the inner surface of the bottom of the rectangular groove (9) is provided at the bottom of the dismantling return top template (2); a mounting bearing seat (11) located directly above the control groove (10) is fixedly connected to the inner surface of the top of the rectangular groove (9); a rotating rod (12) is fixedly connected to the inner surface of the bottom of the mounting bearing seat (11); the bottom end of the rotating rod (12) passes through the control groove (10) and is fixedly connected to a rotating disk (13); the bottom of the rotating disk (13) is fixedly connected to a control handle (14); the bottom of the dismantling return top template (2) is fixedly connected to two reset pipes (15) located on the left and right sides of the rotating disk (13) and symmetrically centered; a reset spring (16) is fixedly connected to the inner wall of the reset pipe (15); the left and right sides of the rotating disk (13) are fixedly connected to transmission rods (17); the transmission rod (17) extends from one end of the rotating disk (13) to the inside of the reset pipe (15).

2. A post-casting strip formwork support system for dismantling and re-topping according to claim 1, characterized in that: The sides of the bonding plates (20) on both sides that are close to each other are fixedly connected to a middle rod (21), and the ends of the middle rods (21) on both sides that are close to each other are fixedly connected to an elastic band (22), and the end of the elastic band (22) away from the middle rod (21) is bolted to the outer surface of the rotating rod (12).

3. The post-casting strip formwork support system for dismantling and re-topping according to claim 1 is characterized in that: The bottom of the dismantled top return template (2) is provided with an annular groove (23) located outside the control groove (10), and the top of the rotating disk (13) is slidably connected to the inner surface of the annular groove (23) through a stabilizing rod (24).

4. The post-casting strip formwork support system for dismantling and re-topping according to claim 1 is characterized in that: The lower surfaces of the reset pipe (15) and the transmission rod (17) are both arc-shaped, and the arc angles of the lower surfaces of the reset pipe (15) and the transmission rod (17) are between sixty and ninety degrees.

5. The post-casting strip formwork support system for dismantling and re-topping according to claim 1 is characterized in that: The inner surface of the sliding groove (18) is fixedly connected with a sliding pad, and the outer surface of the pushing rod (19) is fixedly connected with a sliding pad.

6. The post-casting strip formwork support system for dismantling and re-topping according to claim 1 is characterized in that: The connection between the laminating plate (20) and the pushing rod (19) is a threaded connection.

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