Batter post pull-up type formwork erecting method

Abstract

The invention provides an inclined column pull-up type formwork erecting method. The inclined column pull-up type formwork erecting method comprises the following specific steps that S1, a concrete column and a floor slab within a non-inclined column area are poured; s2, paying off and positioning an inclined column; s3, a reverse pull frame body is erected, specifically, a vertical stand rod frame is erected between floors, and then a diagonal pull rod frame is erected on the vertical stand rod frame through steel pipe fasteners; s4, batter post steel bars are bound; s5, a batter post formwork is erected; s6, batter post concrete is poured; and S7, mold removal is conducted after maintenance. According to the method, the steel pipes are used for interlocking through the fasteners, the anti-sliding force of the steel pipes and the fasteners is used for balancing the construction weight of a formwork system and concrete, an upward-pulling type formwork system is formed, non-landing supporting is achieved, the formwork supporting process is simplified, the work that a high formwork needs to be erected in a traditional construction method is avoided, cost is saved, and the construction progress is accelerated.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, in particular to a method for supporting formwork by pulling up inclined columns. Background Art

[0002] Generally, inclined columns are supported by ground-mounted formwork. However, if there is no structure under the inclined column on this floor or the concrete of the steel beam floor is constructed after the inclined column construction is completed, high formwork must be set up at the location where there is a floor slab below the inclined column.

[0003] If this method is used, the inclined column formwork will become a tall formwork system, which requires organizing expert demonstration and investing more additional support frame materials, increasing the construction period. Summary of the Invention

[0004] In response to the above problems, the present invention provides a method for upward pull-type formwork for inclined columns. This method uses steel pipes to interlock with fasteners, and uses the anti-slip force of the steel pipes and fasteners to balance the formwork system and the weight of concrete construction, forming an upward pull-type formwork system and simplifying the formwork process.

[0005] In order to solve the above problems, the technical solution adopted by the present invention is: A method for supporting formwork by pulling up an inclined column, comprising the following specific steps: S1. Concrete pouring of columns and floor slabs within the non-inclined column area: Within the construction area, priority should be given to completing the concrete pouring of the non-inclined column structure to form a floor slab foundation with stable bearing capacity; S2. Laying out and positioning the inclined columns: According to the design drawings, measure and lay out the inclined columns on the poured floor slab to determine the axis position, inclination angle and height of the inclined columns; S3. Set up the anti-tension frame: first set up the vertical pole frame between the floor slabs, and then use steel pipe fasteners to set up the diagonal tie rod frame on the vertical pole frame; S4. Binding of inclined column reinforcement: Based on the inclination angle and size requirements of the inclined column, bind the inclined column reinforcement skeleton within the support range of the anti-tension frame to ensure that the spacing between the reinforcements and the thickness of the protective layer meet the specifications; S5. Install the inclined column formwork: First, install the inclined column bottom formwork. The bottom formwork is fixed to the anti-tension frame through reserved steel bars to ensure that the bottom formwork is aligned with the axis of the inclined column. Then install the inclined column side formwork. The side formwork is connected to the bottom formwork through bolts and laterally reinforced by the diagonal tie rod frame. S6. Pouring of inclined column concrete: Use layered pouring method, pouring concrete layer by layer from the bottom form upwards, and simultaneously vibrating and compacting; S7. Remove the formwork after curing: After the concrete reaches the designed strength, remove the side formwork, bottom formwork and anti-tension frame in sequence to complete the inclined column construction.

[0006] Preferably, the anti-tension frame includes a vertical pole frame and a diagonal pole frame, the vertical pole frame is composed of multiple pairs of vertical steel pipes and a pair of diagonal steel pipes, and the diagonal pole frame is composed of multiple groups of longitudinal steel pipes and two groups of diagonal steel pipes.

[0007] Preferably, in S3, three pairs of vertical steel pipes are first erected between the floor slabs, multiple longitudinal steel pipes are evenly spaced on the vertical steel pipes, two groups of diagonal steel pipes are then erected on the vertical steel pipes and the longitudinal steel pipes, and finally a pair of diagonal steel pipes and multiple longitudinal steel pipes are erected on the inclined surface of the tail end of the diagonal steel pipe to complete the erection of the counter-tensioning frame.

[0008] Preferably, the steel pipe fastener is a double-hoop fastener.

[0009] Preferably, the steel pipe fastener includes a first hoop, a second hoop and a third hoop, the first hoop is rotatably connected to the second hoop, the side wall of the second hoop is rotatably connected to a rotating shaft, the end of the rotating shaft is fixedly connected to an adjustment plate, the third hoop is fixedly installed on the side wall of the adjustment plate, the length of the rotating shaft is greater than the diameter of the steel pipe, the first hoop, the second hoop and the third hoop realize clamping in three directions, the first hoop clamps the vertical steel pipe and the oblique steel pipe, the second hoop clamps the longitudinal steel pipe, and the third hoop clamps the diagonal steel pipe.

[0010] Preferably, the spacing between the steel pipes of the vertical pole frame in step S3 is 0.8-1.2 meters, and an adjustable base is provided at the bottom of each steel pipe to adapt to the flatness error of the floor surface.

[0011] Preferably, the torque of the steel pipe fastener is not less than 40 N·m to enhance anti-slip capability.

[0012] Preferably, the thickness of each layer of concrete poured in step S6 does not exceed 500 mm, and the interval between pouring adjacent layers does not exceed 70% of the initial setting time of the concrete.

[0013] Preferably, the steel pipe material of the anti-tension frame is Q235B, the wall thickness is not less than 3.0 mm, and the anti-slip bearing capacity of the fastener is not less than 8 kN.

[0014] The beneficial effects of the present invention are: 1. This method uses steel pipes to interlock with fasteners, and uses the anti-slip force of the steel pipes and fasteners to balance the formwork system and the weight of concrete construction, forming an upper-pull formwork system, achieving non-ground support, simplifying the formwork process, avoiding the work of setting up high formwork required by traditional construction methods, saving costs, and accelerating construction progress.

[0015] 2. The steel pipe fasteners can adopt the conventional double-hoop form to achieve the fastening between two steel pipes, or they can adopt the triple-hoop form. On the basis of the double hoop, a third hoop is added, which can be rotated independently to adjust the angle. The first hoop clamps the vertical steel pipe and the oblique steel pipe, the second hoop clamps the longitudinal steel pipe, and the third hoop clamps the oblique steel pipe. There is no need to prepare two sets of double-hoop fasteners, which reduces the operation intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a construction flow chart of the present invention; Figure 2 This is a schematic diagram of the concrete column and floor structure proposed in the present invention; Figure 3 This is a schematic diagram of the structure of the anti-pull frame proposed in the present invention; Figure 4 This is a schematic top view of the anti-pull frame body proposed by the present invention; Figure 5 This is a schematic diagram of the steel pipe fastener structure proposed in the present invention.

[0017] In the figure: 1 vertical pole frame, 11 vertical steel pipe, 12 oblique steel pipe, 2 oblique tie rod frame, 21 oblique steel pipe, 22 longitudinal steel pipe, 3 concrete column, 4 floor slab, 5 reserved steel bar, 6 oblique column, 7 rotating shaft, 8 steel pipe fastener, 81 first clamp, 82 second clamp, 83 third clamp, 9 adjustment plate. DETAILED DESCRIPTION

[0018] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0019] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0020] Example 1 Reference Figure 1-4 A method for supporting formwork by pulling up inclined columns comprises the following specific steps: S1. Casting of concrete columns 3 and floor slabs 4 within the non-inclined column area: Within the construction area, priority is given to completing the concrete casting of the non-inclined column structure to form a floor slab foundation with stable bearing capacity; S2. Laying out and positioning the inclined columns: According to the design drawings, measure and lay out the inclined columns on the poured floor 4 to determine the axis position, inclination angle and height of the inclined columns 6; S3. Set up the anti-tension frame: first set up the vertical pole frame 1 between the 4 floor slabs, then set up the diagonal rod frame 2 on the vertical pole frame 1 using steel pipe fasteners 8. The steel pipe material of the anti-tension frame is Q235B, with a wall thickness of not less than 3.0mm, and the anti-slip bearing capacity of the fasteners is not less than 8kN; The anti-tension frame includes a vertical pole frame 1 and a diagonal pole frame 2. The vertical pole frame 1 is composed of multiple pairs of vertical steel pipes 11 and a pair of diagonal steel pipes 12. The diagonal pole frame 2 is composed of multiple groups of longitudinal steel pipes 22 and two groups of diagonal steel pipes 21.

[0021] The specific steps are: first, three pairs of vertical steel pipes 11 are erected between the four floor slabs, multiple longitudinal steel pipes 22 are erected at equal intervals on the vertical steel pipes 11, and then two groups of inclined steel pipes 21 are erected on the vertical steel pipes 11 and the longitudinal steel pipes 22. Finally, a pair of inclined steel pipes 12 and multiple longitudinal steel pipes 22 are erected on the inclined surface of the tail end of the inclined steel pipe 21 to complete the erection of the counter-tensioning frame.

[0022] Furthermore, the steel pipe fastener 8 adopts a conventional double-hoop fastener to achieve the fastening between two steel pipes. The torque of the steel pipe fastener 8 is not less than 40 N·m to enhance the anti-slip ability.

[0023] S4. Binding of inclined column reinforcement: Based on the inclination angle and size requirements of the inclined column 6, bind the inclined column reinforcement skeleton within the support range of the anti-tension frame to ensure that the reinforcement spacing and cover thickness meet the specifications; S5. Install the inclined column formwork: First, install the inclined column bottom formwork. The bottom formwork is fixed to the anti-tension frame through the reserved steel bars 5 to ensure that the bottom formwork is aligned with the axis of the inclined column 6. Then install the inclined column side formwork. The side formwork is connected to the bottom formwork with bolts and laterally reinforced by the diagonal tie rod frame 2. S6. Concrete pouring for inclined columns: Use layered pouring method, pouring concrete layer by layer from the bottom form upwards, and simultaneously vibrating and compacting. The thickness of each layer of concrete poured in layers shall not exceed 500mm, and the interval between pouring adjacent layers shall not exceed 70% of the initial setting time of the concrete; S7. Remove the formwork after curing: After the concrete reaches the designed strength, remove the side formwork, bottom formwork and anti-tension frame in sequence to complete the inclined column construction.

[0024] Example 2 Reference Figure 1-5 A method for supporting formwork by pulling up inclined columns comprises the following specific steps: S1. Casting of concrete columns 3 and floor slabs 4 within the non-inclined column area: Within the construction area, priority is given to completing the concrete casting of the non-inclined column structure to form a floor slab foundation with stable bearing capacity; S2. Laying out and positioning the inclined columns: According to the design drawings, measure and lay out the inclined columns on the poured floor 4 to determine the axis position, inclination angle and height of the inclined columns 6; S3. Set up the anti-tension frame: first set up the vertical pole frame 1 between the 4 floor slabs, then set up the diagonal rod frame 2 on the vertical pole frame 1 using steel pipe fasteners 8. The steel pipe material of the anti-tension frame is Q235B, with a wall thickness of not less than 3.0mm, and the anti-slip bearing capacity of the fasteners is not less than 8kN; The anti-tension frame includes a vertical pole frame 1 and a diagonal pole frame 2. The vertical pole frame 1 is composed of multiple pairs of vertical steel pipes 11 and a pair of diagonal steel pipes 12. The diagonal pole frame 2 is composed of multiple groups of longitudinal steel pipes 22 and two groups of diagonal steel pipes 21.

[0025] The specific steps are: first, three pairs of vertical steel pipes 11 are erected between the four floor slabs, multiple longitudinal steel pipes 22 are erected at equal intervals on the vertical steel pipes 11, and then two groups of inclined steel pipes 21 are erected on the vertical steel pipes 11 and the longitudinal steel pipes 22. Finally, a pair of inclined steel pipes 12 and multiple longitudinal steel pipes 22 are erected on the inclined surface of the tail end of the inclined steel pipe 21 to complete the erection of the counter-tensioning frame.

[0026] Furthermore, the steel pipe fastener 8 adopts a three-hoop fastener, including a first hoop 81, a second hoop 82 and a third hoop 83. The first hoop 81 and the second hoop 82 are rotatably connected. The side wall of the second hoop 82 is rotatably connected to the rotating shaft 7. The end of the rotating shaft 7 is fixedly connected to the adjusting plate 9. The third hoop 83 is fixedly installed on the side wall of the adjusting plate 9. The length of the rotating shaft 7 is greater than the diameter of the steel pipe. The first hoop 81, the second hoop 82 and the third hoop 83 realize clamping in three directions. The first hoop 81 clamps the vertical steel pipe 11 and the oblique steel pipe 12, the second hoop 82 clamps the longitudinal steel pipe 22, and the third hoop 83 clamps the oblique steel pipe 21 to achieve buckling between the two steel pipes. There is no need to prepare two sets of double-hoop fasteners, which reduces the operating intensity. The torque of the steel pipe fastener 8 is not less than 40N·m to enhance the anti-slip ability.

[0027] Furthermore, the spacing between the steel pipes of the vertical pole frame 1 is 0.8-1.2 meters, and an adjustable base is provided at the bottom of each steel pipe to adapt to the flatness error of the floor surface.

[0028] S4. Binding of inclined column reinforcement: Based on the inclination angle and size requirements of the inclined column 6, bind the inclined column reinforcement skeleton within the support range of the anti-tension frame to ensure that the reinforcement spacing and cover thickness meet the specifications; S5. Install the inclined column formwork: First, install the inclined column bottom formwork. The bottom formwork is fixed to the anti-tension frame through the reserved steel bars 5 to ensure that the bottom formwork is aligned with the axis of the inclined column 6. Then install the inclined column side formwork. The side formwork is connected to the bottom formwork with bolts and laterally reinforced by the diagonal tie rod frame 2. S6. Concrete pouring for inclined columns: Use layered pouring method, pouring concrete layer by layer from the bottom form upwards, and simultaneously vibrating and compacting. The thickness of each layer of concrete poured in layers shall not exceed 500mm, and the interval between pouring adjacent layers shall not exceed 70% of the initial setting time of the concrete; S7. Remove the formwork after curing: After the concrete reaches the designed strength, remove the side formwork, bottom formwork and anti-tension frame in sequence to complete the inclined column construction.

[0029] This method uses steel pipes to interlock with fasteners, and uses the anti-slip force of the steel pipes and fasteners to balance the formwork system and the weight of concrete construction, forming an upper-pull formwork system, achieving non-ground support, simplifying the formwork process, avoiding the work of setting up high formwork required by traditional construction methods, saving costs, and accelerating construction progress.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for supporting formwork by pulling up inclined columns, characterized in that: The specific steps include: S1. Casting of concrete columns (3) and floor slabs (4) within the non-inclined column area: within the construction area, priority is given to completing the concrete casting of the non-inclined column structure to form a floor slab foundation with a stable bearing capacity; S2. Laying out and positioning the inclined columns: According to the design drawings, measuring and laying out the inclined columns on the poured floor slab (4) to determine the axis position, inclination angle and height of the inclined columns (6); S3, erecting the anti-tension frame: first erecting a vertical pole frame (1) between the floor slabs (4), and then erecting a diagonal rod frame (2) on the vertical pole frame (1) using steel pipe fasteners (8); S4. Tie the inclined column reinforcement: according to the inclination angle and size requirements of the inclined column (6), tie the inclined column reinforcement skeleton within the support range of the anti-tension frame to ensure that the reinforcement spacing and protective layer thickness meet the specifications; S5. Supporting the inclined column formwork: first install the inclined column bottom formwork, which is fixed to the anti-tension frame through the reserved steel bars (5) to ensure that the bottom formwork is aligned with the axis of the inclined column (6), and then install the inclined column side formwork, which is connected to the bottom formwork through bolts and is laterally reinforced by the inclined tie rod frame (2); S6. Pouring of inclined column concrete: Use layered pouring method, pouring concrete layer by layer from the bottom form upwards, and simultaneously vibrating and compacting; S7. Remove the formwork after curing: After the concrete reaches the designed strength, remove the side formwork, bottom formwork and anti-tension frame in sequence to complete the inclined column construction.

2. The method for supporting formwork for inclined columns according to claim 1, characterized in that: The anti-tension frame comprises a vertical upright pole frame (1) and an oblique tie rod frame (2), wherein the vertical upright pole frame (1) is composed of a plurality of pairs of vertical steel pipes (11) and a pair of oblique steel pipes (12), and the oblique tie rod frame (2) is composed of a plurality of groups of longitudinal steel pipes (22) and two groups of oblique tie steel pipes (21).

3. The method for supporting formwork for inclined columns according to claim 2, characterized in that: In S3, three pairs of vertical steel pipes (11) are firstly erected between the floor slabs (4), a plurality of longitudinal steel pipes (22) are equidistantly erected on the vertical steel pipes (11), two groups of inclined steel pipes (21) are then erected on the vertical steel pipes (11) and the longitudinal steel pipes (22), and finally a pair of inclined steel pipes (12) and a plurality of longitudinal steel pipes (22) are erected on the inclined surface at the tail end of the inclined steel pipe (21), thereby completing the erection of the anti-tensioning frame.

4. The method for supporting formwork for inclined columns according to claim 3, characterized in that: The steel pipe fastener (8) is a double-hoop fastener.

5. The method for supporting formwork for inclined columns according to claim 3, characterized in that: The steel pipe fastener (8) comprises a first clamp (81), a second clamp (82) and a third clamp (83), wherein the first clamp (81) is rotatably connected to the second clamp (82), the side wall of the second clamp (82) is rotatably connected to a rotating shaft (7), the end of the rotating shaft (7) is fixedly connected to an adjusting plate (9), and the third clamp (83) is fixedly mounted on the side wall of the adjusting plate (9), the length of the rotating shaft (7) is greater than the diameter of the steel pipe, and the first clamp (81), the second clamp (82) and the third clamp (83) achieve clamping in three directions, wherein the first clamp (81) clamps the vertical steel pipe (11) and the oblique steel pipe (12), the second clamp (82) clamps the longitudinal steel pipe (22), and the third clamp (83) clamps the oblique steel pipe (21).

6. The method for supporting formwork for inclined columns according to claim 1, characterized in that: The spacing between the steel pipes of the vertical pole frame (1) in step S3 is 0.8-1.2 meters, and an adjustable base is provided at the bottom of each steel pipe to adapt to the flatness error of the floor surface.

7. The method for supporting formwork for inclined columns according to claim 1, characterized in that: The torque of the steel pipe fastener (8) is not less than 40 N·m to enhance the anti-slip capability.

8. The method for supporting formwork for inclined columns according to claim 1, characterized in that: The thickness of each layer of concrete poured in step S6 does not exceed 500 mm, and the interval between pouring adjacent layers does not exceed 70% of the initial setting time of the concrete.

9. The method for supporting formwork for inclined columns according to claim 1, characterized in that: The steel pipe material of the anti-tension frame is Q235B, the wall thickness is not less than 3.0mm, and the anti-slip bearing capacity of the fastener is not less than 8kN.

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