A formwork for in-situ casting of UHPC hollow columns

Abstract

This invention relates to the field of casting formwork, specifically to a casting formwork for UHPC (Ultra-High-Pressure Polymer) cavity columns, comprising a fixing mechanism and a limiting rod. Two fixing mechanisms are arranged vertically; the upper fixing mechanism corresponds to the cavity column, and the lower fixing mechanism corresponds to the cast-in-place concrete surface. The formwork panels extend horizontally along their length, with one end designated as a sliding end and the other as a connecting end. An adjusting component drives the sliding end of the formwork panel to slide along the length of adjacent formwork panels, thereby adjusting the size of the rectangular tube formed by the four formwork panels according to the dimensions of the cavity column; thus adapting to cavity columns with different cross-sectional dimensions.

Description

Technical Field

[0001] This invention relates to the field of casting formwork, and specifically to a casting formwork for UHPC hollow columns. Background Technology

[0002] Formwork for concrete pouring is a temporary support structure, manufactured according to design requirements, to shape concrete structures and components according to specified positions and geometric dimensions, maintain their correct position, and bear the self-weight of the formwork and external loads acting on it. The formwork is used after the installation of precast hollow columns. Precast hollow columns are hollow precast column components made by integrally forming a steel reinforcement cage with concrete.

[0003] Both the upper ends of the annularly distributed reinforcing bars at the lower end of the hollow column and the upper ends of the reinforcing bars pre-installed on the ground where the hollow column is to be installed are fixed with threaded columns, and straight threaded sleeves are connected to the threaded columns on the pre-installed reinforcing bars on the ground. During installation, the hollow column is hoisted, and after aligning and positioning the reinforcing bars on the hollow column and the reinforcing bars on the ground, the upper and lower threaded columns are connected together using straight threaded sleeves. Then, a casting space is created between the hollow column and the ground using formwork. After installation, concrete is poured into the cavity, making the hollow column and the cast-in-place concrete form a whole, jointly bearing the vertical and horizontal loads. However, the existing on-site casting formwork for hollow columns requires manual splicing and fixing of each column individually, which cannot accommodate square hollow columns of various sizes, thus having certain limitations. Summary of the Invention

[0004] This invention provides a formwork for on-site casting of UHPC hollow columns to solve the above-mentioned problems.

[0005] The present invention provides a cast-in-place formwork for a UHPC hollow column, comprising a fixing mechanism and a limiting rod. Two fixing mechanisms are provided, positioned vertically, with the upper fixing mechanism corresponding to the hollow column and the lower fixing mechanism corresponding to the cast-in-place concrete surface.

[0006] The fixing mechanism includes multiple fixing devices distributed vertically; the fixing devices include a fixing ring, a template, and an adjusting assembly; the fixing ring and the cavity column are coaxially arranged.

[0007] There are four sub-templates, distributed within the fixing ring; the four sub-templates form a rectangular tube coaxial with the fixing ring; the sub-templates of adjacent fixing devices in the same fixing mechanism abut to form the main template; the sub-template of the lowest fixing device in the lower fixing mechanism abuts to the ground.

[0008] The template is designed to extend horizontally along its length, with one end designated as a sliding end and the other as a connecting end. The sliding end of the template abuts against the side wall of the adjacent template near the axis of the fixing ring. A sliding assembly is provided between the connecting end of the template and the sliding end of the adjacent template. The sliding assembly allows the sliding end of the template to slide along the length of the adjacent template. A limit block is fixed to the side of the template away from the axis of the fixing ring, and the limit block has a limit hole. The sliding assembly includes a sliding column. The axis of the sliding column is set along the length of the template. The sliding column is located at the connecting end of the template and on the side wall where the sliding end of the template abuts against the adjacent template. The sliding column is fixedly connected to the connecting end of the template via a connecting plate. The sliding column and the sliding end of the adjacent template are in sliding engagement.

[0009] An adjustment assembly is positioned between the fixed ring and the template. This assembly drives the sliding end of the template to slide along the length of adjacent templates, adjusting the size of the rectangular tube formed by the four templates according to the dimensions of the cavity column, thus adapting to cavity columns with different cross-sectional dimensions. The adjustment assembly includes a rotating ring, moving plates, and a drive structure. The rotating ring is coaxially rotatably mounted on the lower end face of the fixed ring. Four inclined grooves, radially inclined relative to the rotating ring, are distributed annularly on the rotating ring. Four rectangular grooves extending radially along the fixed ring are distributed annularly on the fixed ring. Four moving plates are provided, annularly distributed between the rotating ring and the fixed ring. A rectangular block is fixed to the upper end face of the moving plate; the rectangular block and the rectangular groove slide in fit. A sliding protrusion is fixed to the lower end face of the moving plate; the sliding protrusion and the inclined groove slide in fit. Each moving plate corresponds to one template. The moving plate and the corresponding template slide in fit along the length of the template. The drive structure drives the rotating ring to rotate, and with the cooperation of the inclined grooves and rectangular grooves, drives the moving plates to slide radially along the fixed ring, causing the templates to move synchronously.

[0010] Four limiting rods are provided, arranged in a ring within the fixing ring. The limiting rods are vertically positioned and slide in conjunction with the limiting holes. Before moving the sub-templates of the multiple fixing devices, the limiting rods are pulled out of the limiting holes. When moving the sub-templates of the multiple fixing devices sequentially from top to bottom to the same distance, the limiting rods are inserted sequentially from top to bottom into the limiting holes of the moved sub-templates. In use, firstly, the main template of the upper fixing device of the upper fixing mechanism is placed on the hollow column, and the sub-templates are driven closer together and abut against the side wall of the hollow column by the corresponding adjustment components. The main template of the lower fixing device of the upper fixing mechanism is placed on the outside of the reinforcing steel at the lower end of the hollow column, and the sub-templates are driven closer together and abut against the reinforcing steel of the hollow column by the corresponding adjustment components. Then, the multiple fixing devices of the lower fixing mechanism are placed on the outside of the reinforcing steel on the ground, and the sub-templates are driven closer together and abut against the reinforcing steel on the ground by the corresponding adjustment components. Finally, the limiting rods are vertically inserted into the corresponding limiting holes of the lower fixing mechanism. The second step is to hoist the hollow column above the ground-level reinforcing bars. Simply insert the four limiting rods into the limiting holes on the limiting blocks of the formwork section that abuts against the reinforcing bars of the hollow column to complete the alignment and positioning of the reinforcing bars of the hollow column with the ground-level reinforcing bars. The third step is to rotate the threaded sleeve on the ground-level reinforcing bars to connect the threaded sleeve to the threaded column on the hollow column's reinforcing bars. Stop rotating the threaded sleeve when it abuts against the lowest part of the formwork section of the upper fixing mechanism. This helps determine the screw-in depth of the threaded sleeve and improves the efficiency of manual installation of the hollow column. After completing this step, remove the limiting rods from the limiting holes. Fourth, the limiting rod is inserted again into the limiting hole on the limiting block of the sub-formwork that abuts against the side wall of the cavity column. Then, from top to bottom, the corresponding adjusting components are used to drive the sub-formwork that abuts against the steel bars of the cavity column and the sub-formwork that abuts against the steel bars on the ground away from each other, so that the total size of the template formed by the sub-formwork that abuts against the steel bars of the cavity column and the sub-formwork that abuts against the steel bars on the ground is the same as the size of the cavity column. Then, the limiting rod is moved down further and inserted into the limiting hole on the limiting block of the sub-formwork that abuts against the steel bars of the cavity column and the sub-formwork that abuts against the steel bars on the ground, from top to bottom. Then, the fixing device corresponding to the sub-formwork that abuts against the side wall of the cavity column is moved down. At this time, the limiting rod is inserted into the limiting hole on all the limiting blocks on the same side of the cavity column. The total template of the two fixing mechanisms, the cavity column and the ground form a pouring space. Concrete is poured from the top of the cavity column, and the cavity column and the cast-in-place concrete ground form a whole.

[0011] Furthermore, the drive structure includes a worm gear; the worm gear is rotatably mounted on a fixed ring; a rotating column is coaxially fixed to one end of the worm gear; the rotating column is hexagonal prism-shaped; mating teeth are provided on the side wall of the rotating ring; the worm gear and the mating teeth mesh. The operator twists the rotating column with a wrench to drive the worm gear to rotate, and the worm gear drives the rotating ring to rotate through the mating teeth.

[0012] Furthermore, a support leg is provided between the lowest fixing ring of the ground-fixing mechanism and the ground.

[0013] Furthermore, the support leg includes an upper rod and a lower rod; the upper rod is threadedly connected to the fixing ring, and the lower rod is located below the upper rod, with its lower end abutting against the ground. A threaded support cylinder is provided between the upper and lower rods; the threaded support cylinder is threadedly connected to both the upper and lower rods. The length of the support leg is adjusted according to the flatness of the ground to support the fixing ring.

[0014] Furthermore, the upper end of the main template is provided with a groove, and the lower end is provided with a flange; during assembly, the flanges of adjacent main templates cooperate with the groove to improve the tightness of the connection between adjacent main templates.

[0015] Furthermore, a pull ring is fixed to the lowest fixing ring. When demolding is required, the formwork is moved away from the cavity column, and then the pull ring is hooked with a hook, and the formwork is lifted by a hoist for demolding.

[0016] Furthermore, the movable plate and the sub-plate are connected by sliding rails.

[0017] Furthermore, the sliding convex plate and the movable plate are rotatably connected; ball bearings are provided on the sidewalls where the rectangular block and the rectangular groove abut.

[0018] The beneficial effects of the present invention are: 1. The adjusting component drives the sliding end of the sub-template to slide along the length direction of the adjacent sub-templates, so as to adjust the size of the rectangular tube formed by the four sub-templates according to the size of the cavity column; thus realizing the adaptation of cavity columns with different cross-sectional dimensions.

[0019] 2. To align the hollow column above the ground reinforcement, simply insert the four limiting rods into the limiting holes on the limiting blocks of the formwork that abuts against the hollow column reinforcement. This will complete the alignment and positioning of the hollow column reinforcement with the ground reinforcement, making it easier for workers to align and improve installation efficiency.

[0020] 3. Rotate the straight threaded sleeve on the ground steel bar to make the straight threaded sleeve and the threaded column on the steel bar of the cavity column threaded together. Stop rotating the straight threaded sleeve when it abuts against the bottommost sub-formwork of the upper fixing mechanism. This helps to determine the screwing depth of the straight threaded sleeve and improves the efficiency of manual installation of the cavity column.

[0021] 4. Compared to traditional casting formwork, which requires additional struts or tie rods to provide stable support to the ground, this solution uses fixed rings for auxiliary support, eliminating the need for additional struts or tie rods for overall fixation. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of an embodiment of a cast-in-place template for a UHPC cavity column according to the present invention;

[0024] Figure 2 This is a side view of an embodiment of a cast-in-place template for a UHPC cavity column according to the present invention;

[0025] Figure 3 for Figure 2 Sectional view at point AA;

[0026] Figure 4 This is a diagram showing the state of the casting space formed between the main formwork and the ground when two fixing mechanisms of the UHPC cavity column casting template of the present invention are used;

[0027] Figure 5 This is a schematic diagram of a fixing device for an embodiment of a UHPC cavity column casting template according to the present invention;

[0028] Figure 6 This is a schematic diagram from another angle of the fixing device for an embodiment of the on-site casting formwork for a UHPC cavity column according to the present invention;

[0029] Figure 7 This is a side view of the fixing device of an embodiment of the on-site casting formwork for a UHPC cavity column according to the present invention;

[0030] Figure 8 for Figure 7 Sectional view at point BB;

[0031] Figure 9 for Figure 7 Sectional view at CC;

[0032] Figure 10 for Figure 9 Enlarged view of point D in the middle;

[0033] Figure 11 This is a schematic diagram of the overall template formed by the sub-templates of an embodiment of the on-site casting template for a UHPC cavity column according to the present invention;

[0034] Figure 12 This is a diagram showing the state of the formwork panels when they are close to each other, according to an embodiment of the UHPC cavity column casting formwork of the present invention.

[0035] In the diagram: 100, hollow column; 200, ground; 300, fixing ring; 310, rectangular groove; 320, support leg; 330, pull ring; 340, slide rail; 400, template; 410, sliding column; 420, limiting block; 430, limiting rod; 500, swivel ring; 510, inclined groove; 600, moving plate; 610, rectangular block; 620, sliding protrusion; 700, worm gear. Detailed Implementation

[0036] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0037] An embodiment of the present invention provides a cast-in-place formwork for a UHPC cavity column, as follows: Figures 1 to 12 As shown: A formwork for on-site casting of a UHPC hollow column includes a fixing mechanism and a limiting rod 430. Two fixing mechanisms are provided, one above the other. The upper fixing mechanism corresponds to the hollow column 100, and the lower fixing mechanism corresponds to the cast-in-place concrete ground 200. The fixing mechanism includes multiple fixing devices distributed vertically. Each fixing device includes a fixing ring 300, a formwork section 400, and an adjusting assembly. The fixing ring 300 and the hollow column 100 are coaxially arranged.

[0038] There are four sub-templates 400, distributed within the fixing ring 300; the four sub-templates 400 form a rectangular tube coaxial with the fixing ring 300; the sub-templates 400 of adjacent fixing devices in the same fixing mechanism abut to form the main template; the sub-template 400 of the lowest fixing device in the lower fixing mechanism abuts to the ground 200.

[0039] The template 400 extends horizontally along its length, with one end designated as a sliding end and the other as a connecting end. The sliding end of the template 400 abuts against the side wall of the adjacent template 400 near the axis of the fixing ring 300. A sliding assembly is provided between the connecting end of the template 400 and the sliding end of the adjacent template 400. The sliding assembly is used to allow the sliding end of the template 400 to slide along the length of the adjacent template 400 and to slide against it. The sliding assembly includes a sliding column 410. The axis of the sliding column 410 is set along the length of the template 400. The sliding column 410 is located at the connecting end of the template 400 and is situated on the side wall where the sliding ends of the template 400 and the adjacent template 400 abut. The sliding column 410 is fixedly connected to the connecting end of the template 400 via a connecting plate. The sliding column 410 and the sliding end of the adjacent template 400 are slidably engaged. A limit block 420 is fixed on the side of the template 400 away from the axis of the fixing ring 300. The limit block 420 has a limit hole.

[0040] An adjustment assembly is located between the fixed ring 300 and the template 400. The adjustment assembly drives the sliding end of the template 400 to slide along the length of adjacent templates 400, thereby adjusting the size of the rectangular tube formed by the four templates 400 according to the size of the cavity column 100, thus adapting to cavity columns 100 with different cross-sectional dimensions. The adjustment assembly includes a rotating ring 500, a moving plate 600, and a drive structure. The rotating ring 500 is coaxially rotatably mounted on the lower end face of the fixed ring 300. Four inclined grooves 510, radially inclined relative to the rotating ring 500, are distributed annularly on the rotating ring 500. Four rectangular grooves 310 extending radially along the fixed ring 300 are distributed annularly on the fixed ring 300. Four moving plates 600 are provided, annularly distributed between the rotating ring 500 and the fixed ring 300. A rectangular block 610 is fixed on the upper end face of the moving plate 600. The rectangular block 610 and... The rectangular groove 310 is in sliding engagement; a sliding protrusion 620 is fixed on the lower end face of the movable plate 600; the sliding protrusion 620 and the inclined groove 510 are in sliding engagement; each movable plate 600 corresponds to a template 400; the movable plate 600 and the corresponding template 400 are in sliding engagement along the length of the template 400; the driving structure is used to drive the rotating ring 500 to rotate, and with the cooperation of the inclined groove 510 and the rectangular groove 310, it drives the movable plate 600 to slide radially along the fixed ring 300, and the movable plate 600 drives the template 400 to move synchronously. The movable plate 600 and the template 400 are slidably connected by a slide rail 340. The sliding protrusion 620 and the movable plate 600 are rotatably connected; ball bearings are provided on the side wall where the rectangular block 610 and the rectangular groove 310 abut. The drive structure includes a worm gear 700, which is rotatably mounted on a fixed ring 300. A rotating column is coaxially fixed to one end of the worm gear 700. The rotating column is hexagonal in shape. The side wall of the rotating ring 500 is provided with mating teeth. The worm gear 700 meshes with the mating teeth. The operator twists the rotating column with a wrench, driving the worm gear 700 to rotate. The worm gear 700 drives the rotating ring 500 to rotate through the mating teeth. With the cooperation of the inclined groove 510 and the rectangular groove 310, the moving plate 600 is driven to slide radially along the fixed ring 300. The moving plate 600 drives the template 400 to move synchronously, thereby realizing the synchronous approach or departure of the four templates 400 of the fixed device.

[0041] Four limiting rods 430 are provided, arranged in a ring within the fixing ring 300. The limiting rods 430 are vertically arranged and slide in cooperation with the limiting holes. Before moving the multiple fixing devices' templates 400, the limiting rods 430 are pulled out from the limiting holes. When the multiple fixing devices' templates 400 are moved the same distance from top to bottom, the limiting rods 430 are inserted into the limiting holes of the moved templates 400 from top to bottom. In use, the first step is to place the main template of the upper fixing device of the upper fixing mechanism onto the hollow column 100, and drive the sub-templates 400 to move closer to each other and abut against the side wall of the hollow column 100 through the corresponding adjustment components. The main template of the lower fixing device of the upper fixing mechanism is placed on the outside of the steel bar at the lower end of the hollow column 100, and the sub-templates 400 are driven closer to each other and abut against the steel bar of the hollow column 100 through the corresponding adjustment components. Then, the multiple fixing devices of the lower fixing mechanism are placed on the outside of the steel bar on the ground 200, and the sub-templates 400 are driven closer to each other and abut against the steel bar of the ground 200 through the corresponding adjustment components. Finally, the limiting rod 430 is vertically inserted into the corresponding limiting hole of the lower fixing mechanism. The second step is to hoist the hollow column 100 above the reinforcing bars on the ground 200. Simply insert the four limiting rods 430 into the limiting holes on the limiting blocks 420 of the formwork 400 that abuts against the reinforcing bars of the hollow column 100 to complete the alignment and positioning of the reinforcing bars of the hollow column 100 and the reinforcing bars on the ground 200. The third step is to rotate the threaded sleeve on the reinforcing bars on the ground 200 to connect the threaded sleeve to the threaded column on the reinforcing bars of the hollow column 100. Stop rotating the threaded sleeve when it abuts against the lowermost formwork 400 of the upper fixing mechanism. This helps determine the screw-in depth of the threaded sleeve and improves the efficiency of manual installation of the hollow column 100. After completing this step, remove the limiting rods 430 from the limiting holes.Fourth, the limiting rod 430 is re-inserted into the limiting hole on the limiting block 420 of the sub-formwork 400 that abuts against the side wall of the cavity column 100. Then, from top to bottom, the corresponding adjusting components are used to drive the sub-formwork 400 that abuts against the steel bars of the cavity column 100 and the sub-formwork 400 that abuts against the steel bars of the ground 200 away from each other, so that the total size of the template formed by the sub-formwork 400 that abuts against the steel bars of the cavity column 100 and the sub-formwork 400 that abuts against the steel bars of the ground 200 is the same as the size of the cavity column 100. Then, the limiting rod 430 is moved further downward and inserted from top to bottom. The limiting blocks 420 on the formwork 400 that originally abutted against the steel bars of the hollow column 100 and the formwork 400 that abutted against the steel bars of the ground 200 are inserted into the limiting holes. Then, the fixing device corresponding to the formwork 400 that abutted against the side wall of the hollow column 100 is driven to move down. At this time, the limiting rod 430 is inserted into the limiting holes on all the limiting blocks 420 on the same side of the hollow column 100. The two fixing mechanisms form a pouring space between the main formwork, the hollow column 100 and the ground 200. Concrete is poured from the top of the hollow column 100, and the hollow column 100 and the cast-in-place concrete ground 200 form an integral whole.

[0042] In this embodiment, a support leg 320 is provided between the lowest fixing ring 300 of the fixing mechanism corresponding to the ground 200 and the ground 200. The support leg 320 includes an upper rod and a lower rod; the upper rod is threadedly connected to the fixing ring 300, and the lower rod is located below the upper rod, with its lower end abutting against the ground 200. A threaded support cylinder is provided between the upper rod and the lower rod; the threaded support cylinder is threadedly connected to the upper rod and the lower rod. The length of the support leg 320 is adjusted according to the flatness of the ground 200 to support the fixing ring 300.

[0043] In this embodiment, the upper end of the main template has a groove, and the lower end has a flange. During assembly, the flanges of adjacent main templates engage with the groove, improving the tightness of the connection between adjacent main templates. A pull ring 330 is fixed on the lowest fixing ring 300. When demolding is required, the sub-template 400 is moved away from the cavity column 100, and then the pull ring 330 is hooked with a hook, and the demolding is carried out by hoisting with a hoisting machine.

[0044] Based on the above embodiments, the working principle and process of the present invention are as follows: In use, firstly, the overall template of the upper fixing device of the upper fixing mechanism is placed on the hollow column 100, and the sub-templates 400 are driven to approach each other and abut against the side wall of the hollow column 100 by the corresponding adjustment components. The overall template of the lower fixing device of the upper fixing mechanism is placed on the outside of the steel bar at the lower end of the hollow column 100, and the sub-templates 400 are driven to approach each other and abut against the steel bar of the hollow column 100 by the corresponding adjustment components. Then, the multiple fixing devices of the lower fixing mechanism are placed on the outside of the steel bar on the ground 200, and the sub-templates 400 are driven to approach each other and abut against the steel bar of the ground 200 by the corresponding adjustment components. Then, the limiting rod 430 is vertically inserted into the corresponding limiting hole of the lower fixing mechanism.

[0045] The second step is to hoist the hollow column 100 above the reinforcing bars on the ground 200. Simply insert the four limiting rods 430 into the limiting holes on the limiting blocks 420 of the formwork 400 that abuts against the reinforcing bars of the hollow column 100 to complete the alignment and positioning of the reinforcing bars of the hollow column 100 and the reinforcing bars on the ground 200. The third step is to rotate the threaded sleeve on the reinforcing bars on the ground 200 to connect the threaded sleeve to the threaded column on the reinforcing bars of the hollow column 100. Stop rotating the threaded sleeve when it abuts against the lowermost formwork 400 of the upper fixing mechanism. This helps determine the screw-in depth of the threaded sleeve and improves the efficiency of manual installation of the hollow column 100. After completing this step, remove the limiting rods 430 from the limiting holes.

[0046] Fourth, the limiting rod 430 is re-inserted into the limiting hole on the limiting block 420 of the sub-formwork 400 that abuts against the side wall of the cavity column 100. Then, from top to bottom, the corresponding adjusting components are used to drive the sub-formwork 400 that abuts against the steel bars of the cavity column 100 and the sub-formwork 400 that abuts against the steel bars of the ground 200 away from each other, so that the total size of the template formed by the sub-formwork 400 that abuts against the steel bars of the cavity column 100 and the sub-formwork 400 that abuts against the steel bars of the ground 200 is the same as the size of the cavity column 100. Then, the limiting rod 430 is moved further downward and inserted from top to bottom. The limiting blocks 420 on the formwork 400 that originally abutted against the reinforcing bars of the hollow column 100 and the formwork 400 that abutted against the reinforcing bars of the ground 200 are inserted into the limiting holes. Then, the fixing device corresponding to the formwork 400 that abutted against the side wall of the hollow column 100 is driven down. At this time, the limiting rod 430 is inserted into the limiting holes on all the limiting blocks 420 on the same side of the hollow column 100. The main formwork of the two fixing mechanisms, the hollow column 100 and the ground 200 form a pouring space. Concrete is poured from the top of the hollow column 100, and the hollow column 100 and the cast-in-place concrete ground 200 form a whole. When it is necessary to remove the formwork, the formwork 400 is moved away from the hollow column 100, and then the hook is used to hang the pull ring 330, and the formwork is removed by lifting with a hoist. When a localized break occurs in the ground support 200, causing some of the support legs 320 to be unable to contact the ground 200, one end of a steel wire rope can be fixed to the pull ring 330, and the other end can be fixed to the ground 200 to achieve balance.

[0047] 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 within the protection scope of the present invention.

Claims

1. A formwork for in-situ casting of a UHPC hollow core column, characterized in that: The fixing mechanism comprises a plurality of fixing devices distributed upward and downward; The fixing mechanism comprises a plurality of fixing devices distributed upward and downward; The fixing mechanism comprises a plurality of fixing devices distributed upward and downward; The fixing mechanism comprises a plurality of fixing devices distributed upward and downward; The fixing mechanism comprises a plurality of fixing devices distributed upward and downward; The fixing mechanism comprises a plurality of fixing devices distributed upward and downward; 2. The in-situ cast formwork for a UHPC hollow core column according to claim 1, characterized in that: The fixing mechanism comprises a plurality of fixing devices distributed upward and downward; 3. The in-situ cast formwork for a UHPC hollow core column according to claim 2, characterized in that: The fixing mechanism comprises a plurality of fixing devices distributed upward and downward; 4. The in-situ cast formwork for a UHPC hollow core column of claim 3, wherein: The fixing mechanism comprises a plurality of fixing devices distributed upward and downward; 5. The in-situ cast formwork for a UHPC hollow core post of claim 4, wherein: The fixing mechanism comprises a plurality of fixing devices distributed upward and downward; 6. The in-situ cast formwork for a UHPC hollow core post of claim 1, wherein: The fixing mechanism comprises a plurality of fixing devices distributed upward and downward; 7. The in-situ cast formwork for a UHPC hollow core post of claim 1, wherein: The fixing mechanism comprises a plurality of fixing devices distributed upward and downward; 8. 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The fixing mechanism comprises a plurality of fixing devices distributed upward and downward; The fixing mechanism comprises a plurality of fixing devices distributed upward and downward; The fixing mechanism comprises a plurality of fixing devices distributed upward and downward; The fixing mechanism comprises a plurality of fixing devices distributed upward and downward; The fixing mechanism comprises a plurality of fixing devices distributed upward and downward; The fixing mechanism comprises a plurality of fixing devices distributed upward and downward; The fixing mechanism comprises a plurality of fixing devices distributed upward and downward; The fixing mechanism comprises a plurality of fixing devices distributed upward and downward; The fixing mechanism comprises a plurality of fixing devices distributed upward and downward; The fixing mechanism comprises a plurality of fixing devices distributed upward and downward; The fixing mechanism comprises a plurality of fixing devices distributed upward and downward; The fixing mechanism comprises a plurality of fixing devices distributed upward and downward; The fixing mechanism comprises a plurality of fixing devices distributed upward and downward; The fixing mechanism comprises a plurality of fixing devices distributed upward and downward; The fixing mechanism comprises a plurality of fixing devices distributed upward and downward; The fixing mechanism comprises a plurality of fixing devices distributed upward and downward; The fixing mechanism comprises a plurality of fixing devices distributed upward and downward; The fixing mechanism comprises a plurality of fixing devices distributed upward and downward; The fixing mechanism comprises a plurality of fixing devices distributed upward and downward; The fixing mechanism comprises a plurality of fixing devices distributed upward and downward; The fixing mechanism comprises a plurality of fixing devices distributed upward and downward; The fixing mechanism comprises a plurality of fixing devices distributed upward and downward; The fixing mechanism comprises a plurality of fixing devices distributed upward and downward; The fixing mechanism comprises a plurality of fixing devices distributed upward and downward; The fixing mechanism comprises a plurality of fixing devices distributed upward and downward; The fixing mechanism comprises a plurality of fixing devices distributed upward and downward; The fixing mechanism comprises a plurality of fixing devices distributed upward and downward; The fixing mechanism comprises a plurality of fixing devices distributed upward and downward; The fixing mechanism comprises a plurality of fixing devices distributed upward and downward; The fixing mechanism comprises a plurality of fixing devices distributed upward and downward; The fixing mechanism comprises a plurality of fixing devices distributed upward and downward; The fixing mechanism comprises a plurality of fixing devices distributed upward and downward; The fixing mechanism comprises a plurality of fixing devices distributed upward and downward; The fixing mechanism comprises a plurality of fixing devices distributed upward and downward; The fixing mechanism comprises a plurality of fixing devices distributed upward and downward; The fixing mechanism comprises a plurality of fixing devices distributed upward and downward; The fixing mechanism comprises

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