Formwork support based on concrete four-cone hopper and erecting method of formwork support

Abstract

The invention discloses a formwork support based on a concrete four-cone hopper and an erecting method thereof.The four cone hopper side walls of the concrete four-cone hopper are all variable cross-section inclined plates, ring beams are arranged at upper and lower openings formed by the four cone hopper side walls, and the formwork support comprises a lower steel pipe type support, a wood formwork and a supporting steel pipe; the supporting steel pipe is perpendicular to the wood formwork, the supporting steel pipe is connected with the lower steel pipe type support through the corner fasteners, and the spiral reinforcement cages are arranged in the middle and on the two sides of the variable cross-section inclined plate and connected with the lower-layer steel bars in a welded mode. An embedded long steel plate is arranged on the surface of the variable cross-section inclined plate and connected with the upper-layer steel bars in a welded mode. According to the formwork support based on the four concrete conical hoppers and the erecting method of the formwork support, the stability of the formwork support of the inclined plate can be enhanced, the thickness and the gradient of the variable cross-section inclined plate can be conveniently controlled, and the concrete vibrating quality of the variable cross-section inclined plate is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to a formwork support and its erecting method, in particular to a formwork support based on concrete four-cone bucket and its erecting method. BACKGROUND

[0002] Variable cross-section inclined plate is a common component form in silo structure, which is characterized in that the thickness of the inclined plate changes with the upper load to meet the functional requirements of silo structure. However, there are some problems and many things to be improved in the construction site in terms of the stability of the formwork support of the variable cross-section inclined plate (without setting the support steel pipe perpendicular to the inclined plate), the thickness and slope control (only through the upper and lower layer of reinforcement protective layer cushion), the concrete vibration (vibration after the upper side formwork is opened), the foundation setting of the upper formwork support of the concrete four-cone bucket (directly placed on the four-cone bucket ring beam) and so on. SUMMARY

[0003] The technical problem to be solved by the present application is to provide a formwork support based on concrete four-cone bucket and its erecting method, which can strengthen the stability of the inclined plate formwork support, conveniently control the thickness and slope of the variable cross-section inclined plate, and ensure the concrete vibration quality of the variable cross-section inclined plate.

[0004] The technical solution adopted by the present application to solve the above technical problem is to provide a formwork support based on concrete four-cone bucket, four cone side walls of the concrete four-cone bucket are variable cross-section inclined plates, ring beams are arranged at the upper and lower openings formed by the four cone side walls, the formwork support comprises a lower steel pipe support, a wooden formwork and a support steel pipe, the support steel pipe is perpendicular to the wooden formwork, the support steel pipe is connected with the lower steel pipe support through a corner fastener, spiral steel cages are arranged at the middle and both sides of the variable cross-section inclined plate, and the spiral steel cages are welded with the lower layer of reinforcement; a pre-embedded long steel plate is arranged on the surface of the variable cross-section inclined plate, and the pre-embedded long steel plate is welded with the upper layer of reinforcement.

[0005] Further, the size of the variable cross-section inclined plate is 205-300mm, and the angle with the horizontal plane is 54.75°, the depth of the four-cone bucket formed by splicing the four cone side walls is 3170mm, the upper opening size is 4800*4800mm, and the lower opening size is 600*600mm.

[0006] Further, the connection point of the support steel pipe and the lower steel pipe support is arranged at the longitudinal and transverse steel pipe node of the lower steel pipe support to realize the load transfer of the support steel pipe.

[0007] Further, it further comprises an upper steel beam and a lower steel beam, the lower steel beam is welded with the pre-embedded long steel plate, the upper steel beam is welded with the lower steel beam and the pre-embedded long steel plate, and a disc buckle type support is arranged on the upper steel beam.

[0008] Further, the number of the upper steel beams is multiple and arranged transversely, and the number of the lower steel beams is multiple and arranged longitudinally.

[0009] The application also provides a method for erecting the formwork support based on the concrete four-cone formwork, which comprises the following steps: four variable cross-section inclined plates are connected to form the four-cone formwork at a certain angle with the horizontal plane; ring beams are arranged at the upper and lower openings of the four-cone formwork; a lower formwork of the four-cone formwork is installed, and the supporting steel pipe is perpendicular to the lower wood formwork of the four-cone formwork; lower steel bars of the variable cross-section inclined plate are installed, eight spiral steel reinforcement cages are welded to the lower steel bars of the variable cross-section inclined plate, and upper steel bars of the variable cross-section inclined plate are installed; a pre-embedded long steel plate is arranged, and single-row anchoring bars are welded to the pre-embedded long steel plate; after the thickness and slope of the variable cross-section inclined plate are positioned according to the side formwork boundary line of the lower and upper ring beams, the pre-embedded long steel plate is fixed by welding the upper steel bars of the variable cross-section inclined plate to the anchoring bars; an upper formwork of the four-cone formwork is installed, the double-side formwork of the variable cross-section inclined plate is tightened by the tensioning bolt, and the self-compacting concrete is poured and vibrated by the spiral steel reinforcement cage.

[0010] Further, the positions and specifications of the upper and lower steel beams and the pre-embedded long steel plate are set according to the module of the roof layer formwork support after the concrete four-cone formwork is cured to the design strength, the lower steel beam is welded to the pre-embedded long steel plate, the upper steel beam is welded to the pre-embedded long steel plate and the lower steel beam, and the roof layer formwork support is erected on the upper steel beam.

[0011] Further, the roof layer formwork support is a disc buckle type support.

[0012] Further, the double-side formwork of the variable cross-section inclined plate is tightened by the M14 tensioning bolt with a spacing of 500*500mm.

[0013] The application has the following beneficial effects compared with the prior art: 1. The supporting steel pipe which is perpendicular to the variable cross-section inclined plate can be used in the construction of all types of concrete inclined plate formwork supports, and can strengthen the stability of the inclined plate formwork support. 2. The spiral steel reinforcement cage which is welded to the lower steel bar can be used in the construction of large-slope inclined plate concrete pouring, and can ensure the quality of concrete vibration of the large-slope inclined plate. 3. The pre-embedded long steel plate which is welded to the upper steel bar can be used in the construction of all types of concrete inclined plates, and can control the thickness and slope of the concrete inclined plate. 4. The upper and lower steel beams which are welded to the pre-embedded long steel plate can be used in the construction of the upper structure formwork support of all types of concrete four-cone formwork and concrete conical formwork, and can guarantee the reliability of the foundation of the upper structure formwork support. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a planar arrangement of the concrete four-cone formwork. Figure 2The lower plane layout of the concrete four-cone formwork support of the application; Figure 3 The upper plane layout of the concrete four-cone formwork support of the application; Figure 4 The section layout along A-A / B-B line of the concrete four-cone formwork support of the application; Figure 5 The lower plane layout of the steel beam of the application; Figure 6 The upper plane layout of the steel beam of the application; Figure 7 The plane layout of the concrete four-cone formwork support of the application; Figure 8 The section layout along C-C line of the concrete four-cone formwork support of the application; Figure 9 The section layout along D-D line of the concrete four-cone formwork support of the application.

[0015] In the figure, 1 is a variable cross-section inclined plate, 2 is a ring beam, 3 is a lower steel pipe support, 4 is a wooden formwork, 5 is a lower steel bar, 6 is a supporting steel pipe, 7 is a spiral steel bar cage, 8 is a pre-embedded long steel plate, 9 is a lower steel beam, 10 is an upper steel beam, 11 is a disc buckle support, and 12 is an upper steel bar. DETAILED DESCRIPTION

[0016] The application will be further described below in combination with the drawings and examples.

[0017] Please refer to Figures 1-4 The formwork support based on the concrete four-cone of the application is provided, the variable cross-section inclined plate 1 and the ring beam 2 are two components of the concrete four-cone, the lower steel pipe support 3 and the wooden formwork 4 are the formwork support system of the concrete four-cone, the supporting steel pipe 6 perpendicular to the wooden formwork 4 is arranged to strengthen the stability of the formwork support of the variable cross-section inclined plate, the supporting steel pipe 6 is connected with the lower steel pipe support 3 through the corner fastener, the connecting point must be arranged near the longitudinal and transverse steel pipe node of the lower steel pipe support 3 to ensure the load transmission of the supporting steel pipe 6, the spiral steel bar cage 7 is arranged in the middle and on both sides of the variable cross-section inclined plate 1, the spiral steel bar cage 7 is welded with the lower steel bar 5, the vibrating rod is inserted into the spiral steel bar cage 7 for vibrating during construction to standardize the vibrating path of the vibrating rod and ensure the vibrating and compacting of the concrete of the variable cross-section inclined plate 1, the pre-embedded long steel plate 8 is arranged on the surface of the variable cross-section inclined plate 1, the pre-embedded long steel plate 8 is welded with the upper steel bar 12, and the pre-embedded long steel plate 8 is positioned according to the side mold edge line of the upper and lower ring beams 2 during construction to ensure the thickness and slope of the variable cross-section inclined plate 1.

[0018] As Figures 5-9As shown, the lower steel beam 9 is welded to the embedded long steel plate 8, the upper steel beam 10 is welded to the lower steel beam 9 and the embedded long steel plate 8, and the disc-type support 11 is arranged on the upper steel beam 10, the position of the upper steel beam 10 and the embedded long steel plate 8 can be adjusted according to the modulus of the vertical rod of the disc-type support 11, and the number and specifications of the upper steel beam 10 and the lower steel beam 9 can be selected according to the load size transmitted by the disc-type support 11.

[0019] The application is introduced below by taking the construction of a grain depot project as an example. The concrete four-cone hopper is located below the storage space of the grain depot, the top elevation of the four-cone hopper is +5.600m, the side wall of the four-cone hopper is a variable cross-section inclined plate 1 with an angle of 54.75° with the horizontal plane, the depth of the four-cone hopper is 3170mm, the upper opening size of the four-cone hopper is 4800*4800mm, and the lower opening size of the four-cone hopper is 600*600mm, a ring beam 2 is arranged at the upper and lower openings of the four-cone hopper, and the sizes of the ring beams are 450*1100mm and 250*200mm respectively; the concrete four-cone hopper support is arranged according to the scheme, the lower part formwork of the concrete four-cone hopper is installed, the support steel pipe 6 is connected to the node of the concrete four-cone hopper support, the spacing is 1000*1000mm, and it is ensured that the support steel pipe 6 is perpendicular to the lower wood formwork 4 of the concrete four-cone hopper; the lower reinforcement 5 of the variable cross-section inclined plate is installed, eight Φ6@200mm spiral reinforcement cages 7 are welded to the lower reinforcement 5 of the variable cross-section inclined plate, the upper reinforcement 12 of the variable cross-section inclined plate is installed, the embedded long steel plate 8 with a size of 2000*100*10mm is arranged on the four-cone hopper, Φ8@200mm single-row anchoring reinforcement is welded to the embedded long steel plate 8, the thickness and slope of the variable cross-section inclined plate are positioned according to the side form line of the upper and lower ring beams, the variable cross-section inclined plate is fixed by welding the anchoring reinforcement and the upper reinforcement 12 of the variable cross-section inclined plate, the upper part formwork of the concrete four-cone hopper is installed, the double-side formwork of the variable cross-section inclined plate is tightened by the M14 opposite-pulling bolts with a spacing of 500*500mm, the self-compacting concrete is poured, the vibrating rod is vibrated through the spiral reinforcement cage 7, after the concrete four-cone hopper is cured to the design strength, the position and specifications of the upper and lower steel beams and the embedded long steel plate are set according to the modulus of 900mm of the roof layer formwork support, the lower steel beam HN200*100*5.5*8 is welded to the embedded long steel plate, the upper steel beam HN200*100*5.5*8 is welded to the embedded long steel plate and the lower steel beam HN200*100*5.5*8, and the roof layer formwork support is arranged on the upper steel beam HN200*100*5.5*8.

[0020] The application is first applied to the construction of the silo structure of the new 120000-ton grain depot project in Xinchang, and the budget clerk and the construction clerk find that 100000 yuan of labor cost can be saved and 30 days of construction period can be reduced after comprehensive statistics.

[0021] Although the present application has been disclosed in its preferred embodiments with reference to the drawings, it will be apparent to those skilled in the art that modifications and improvements can be made without departing from the spirit and scope of the application, and it is intended to cover in the claims any such modifications and improvements that fall within the scope of the application.

Claims

1. A formwork support based on a concrete four-cone bucket, characterized in that: The four cone side walls of the concrete four-cone bucket are all variable-section inclined plates (1), and the upper and lower openings formed by the four cone side walls are all provided with ring beams (2). The formwork support comprises a lower steel pipe support (3), a wooden formwork (4) and a supporting steel pipe (6), and the supporting steel pipe (6) is perpendicular to the wooden formwork (4). The supporting steel pipe (6) is connected to the lower steel pipe support (3) through a corner fastener. Spiral steel cages (7) are provided in the middle and on both sides of the variable-section inclined plate (1), and the spiral steel cages (7) are welded to the lower steel bars (5); and a pre-buried long steel plate (8) is provided on the surface of the variable-section inclined plate (1), and the pre-buried long steel plate (8) is welded to the upper steel bars (12).

2. The formwork support based on the concrete four-cone bucket according to claim 1, characterized in that: The size of the variable cross-section inclined plate (1) is 205-300 mm and forms an angle of 54.75° with the horizontal plane. The cone bucket formed by splicing the four cone bucket side walls is 3170 mm deep, with an upper opening size of 4800×4800 mm and a lower opening size of 600×600 mm.

3. The formwork support based on the concrete four-cone bucket according to claim 1, characterized in that: The connection point between the supporting steel pipe (6) and the lower steel pipe bracket (3) is arranged at the longitudinal and transverse steel pipe nodes of the lower steel pipe bracket (3) to achieve load transfer of the supporting steel pipe (6).

4. The formwork support based on the concrete four-cone bucket according to claim 1, characterized in that: It also includes an upper steel beam (10) and a lower steel beam (9), wherein the lower steel beam (9) is welded to the embedded long steel plate (8), and the upper steel beam (10) is welded to the lower steel beam (9) and the embedded long steel plate (8), and a disc-type bracket (11) is mounted on the upper steel beam (10).

5. The formwork support based on the concrete four-cone bucket according to claim 1, characterized in that: The upper steel beams (10) are multiple in number and arranged in a transverse direction; the lower steel beams (9) are multiple in number and arranged in a longitudinal direction.

6. A method for erecting a formwork support based on a concrete four-cone bucket according to claim 1, characterized in that: The steps include: Four variable-section inclined plates (1) are spliced ​​together at a certain angle to the horizontal plane to form a four-cone bucket; Ring beams (2) are provided at the upper and lower openings of the four-cone bucket; Install the lower template of the four-cone bucket and make the supporting steel pipe (6) perpendicular to the wooden template (4) at the lower part of the four-cone bucket; Install the lower steel bars (5) of the variable-section inclined plate, weld the eight spiral steel cages (7) to the lower steel bars (5) of the variable-section inclined plate, and then install the upper steel bars (12) of the variable-section inclined plate; Arrange a pre-buried long steel plate (8) and weld a single row of anchor bars thereon, position the thickness and slope of the variable section inclined plate (1) according to the side mold edge line of the lower and upper ring beams, and then fix it by welding the anchor bars to the upper layer of steel bars (12) of the variable section inclined plate; The upper formwork of the four-cone bucket is installed, the double-side formwork of the variable-section inclined plate (1) is tightened by tension bolts, and self-compacting concrete is poured. The vibrating rod is vibrated through the spiral steel cage (7).

7. The method for erecting a formwork support based on a concrete four-cone bucket according to claim 6, characterized in that: The method further includes setting the positions and specifications of the upper and lower steel beams and the embedded long steel plate (8) according to the module of the roof layer formwork support after the concrete four-cone bucket reaches the design strength, welding the lower steel beam (9) to the embedded long steel plate (8), welding the upper steel beam (10) to the embedded long steel plate (8) and the lower steel beam (9), and setting up the roof layer formwork support on the upper steel beam (10).

8. The method for erecting a formwork support based on a concrete four-cone bucket according to claim 7, characterized in that: The roofing layer formwork support is a disc-type support (11).

9. The method for erecting a formwork support based on a concrete four-cone bucket according to claim 6, wherein: The double-sided formwork of the variable-section inclined plate (1) is tightened by M14 tension bolts with a spacing of 500×500 mm.

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