A high formwork system and a construction method thereof

Abstract

This invention discloses a high-support formwork system and its construction method. The high-support formwork system combines an operating platform with a frame structure. The bottom of the operating platform includes: an H-beam base: made of 16# H-beams, with the first row of H-beams serving as the base for the uprights, parallel to the direction of frame movement, and spaced at the same intervals as the upper uprights; and a second row of H-beams serving as the load-bearing frame for forklift lifting and as placement points for specially designed casters, located above the first row of H-beams. The two rows of H-beams are fully welded together to form a single unit; and limiting reinforcing bars: steel bars are welded to the upper and lower rows of H-beams, one vertically welded to the first row of H-beams, allowing the bottom of the upright to fit inside; and the other diagonally welded to the upper and lower rows of H-beams, limiting the lateral movement of the uprights. The bottoms of the corner uprights can be welded and fixed to the H-beams. This invention reduces the time spent on secondary erection and dismantling of the formwork unit on-site, saving manpower, materials, and machinery; the construction sequence is reasonable; and the actual construction efficiency is high.

Description

Technical Field

[0001] This invention relates to the field of formwork system construction technology, specifically a high formwork system and its construction method. Background Technology

[0002] According to the "Safety Management Measures for Sub-projects with High Risk": the formwork operation must be carried out in the following ways: the erection height is 8m or above; the erection span is 18m or above; the total construction load is 15kN / m2 or above, and the concentrated line load is 20kN / m or above.

[0003] In related technologies, due to the high height of the formwork and the large construction area, the formwork is generally erected on-site. After the entire formwork construction area is completed, it is dismantled and transported for re-erection.

[0004] Regarding the aforementioned technologies, the applicant believes that the following defects exist: after the entire formwork construction area of ​​a large-area factory building is erected, dismantling and re-erecting it will require a large amount of manpower, materials, and machinery, and the on-site construction will take a long time, leaving room for improvement. Therefore, we propose a high-support formwork system and its construction method. Summary of the Invention

[0005] The purpose of this invention is to provide a high-support formwork system and its construction method to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a high formwork system and its construction method, wherein the high formwork system combines an operating platform with a frame, and the bottom of the operating platform includes:

[0007] I-beam base: 16# I-beams are used. The first row of I-beams serves as the base of the uprights and is set parallel to the direction of frame movement. The spacing is the same as the spacing of the upper uprights. The second row of I-beams serves as the load-bearing frame of the forklift lifting frame and the placement point for the special casters. It is set on the upper part of the first row of I-beams. The two rows of I-beams are fully welded to form a whole.

[0008] Limiting reinforcement bars: The ends of the reinforcing bars are welded to the upper and lower rows of I-beams. One bar is welded vertically to the first row of I-beams, and the bottom of the upright can be inserted into it. The other bar is welded diagonally to the upper and lower rows of I-beams to limit the lateral movement of the upright. The bottom of the corner uprights can be welded to the I-beams to enhance the integrity of the frame and the base.

[0009] Specially designed casters: A steel plate is installed on the top to provide a stress contact surface for the second row of I-beams. Specially designed casters are installed on the two outermost I-beams, arranged at equal intervals along the direction of frame movement, with a height of 210mm. Each caster can withstand a weight of 1.2 tons.

[0010] The operating platform is fully covered with steel hook-type scaffold boards at one span below the beam or slab, and a 1200mm high fixed protective structure is erected around it. The movable frame on the operating platform is connected to the surrounding frame.

[0011] In the high formwork system, the movable formwork support uprights and the immovable formwork support uprights are connected by disc buckle crossbars. If the modules of the movable formwork support uprights and the immovable formwork support uprights do not match, steel pipe fasteners are used to connect them to form a whole, and each side can be extended by one span.

[0012] In the high-support formwork system, each movable frame is supported by 12# steel wire ropes that are diagonally connected to the second row of I-beams within the span from the upright node at the operating platform position. The system is symmetrically arranged with two ropes on each side.

[0013] Preferably, the scaffolding erection requirements are consistent with those for normal high-support formwork scaffolding erection.

[0014] Preferably, a construction method for a high formwork system includes the following steps:

[0015] Erection: First, the ground for erecting the scaffold must be flat and have sufficient bearing capacity.

[0016] Plan the dimensions of the I-beams and the width of the scaffolding in advance, and weld the bases of the two rows of I-beams into a whole;

[0017] The high-support scaffolding is erected on site according to the dimensions of the I-beams and the width of the scaffolding. All standard-distance scaffolding is placed on the I-beam limit bars.

[0018] The bottom of the beams and areas with irregular shapes are constructed using conventional methods, forming an integral whole with the platform frame;

[0019] Demolition and relocation: Demolition will be carried out after the concrete strength reaches the design requirements. The demolition will be carried out on the upper part of the scaffolding that is fully covered with steel hook-type scaffolding boards, while the remaining parts of the scaffolding will remain unchanged.

[0020] After using jacks to lift the I-beams, place them on casters to move them along the planned direction of the frame. A hydraulic manual forklift can be added for auxiliary movement.

[0021] After the scaffold is moved to the next construction area, an upper scaffold and beam bottom supports are erected to reinforce and connect it into a whole.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows: the high formwork system and its construction method reduce the time spent on secondary erection and dismantling of formwork units on site, save manpower, materials and machinery input, have a reasonable construction sequence, and have high actual construction efficiency. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the mobile frame base structure of the present invention. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Please see Figure 1 This invention provides a technical solution: a high formwork system and its construction method, wherein the high formwork system combines an operating platform with a frame, and the bottom of the operating platform includes:

[0026] I-beam base: 16# I-beams are used. The first row of I-beams serves as the base of the uprights and is set parallel to the direction of frame movement. The spacing is the same as the spacing of the upper uprights. The second row of I-beams serves as the load-bearing frame of the forklift lifting frame and the placement point for the special casters. It is set on the upper part of the first row of I-beams. The two rows of I-beams are fully welded to form a whole.

[0027] Limiting reinforcement bars: The ends of the reinforcing bars are welded to the upper and lower rows of I-beams. One bar is welded vertically to the first row of I-beams, and the bottom of the upright can be inserted into it. The other bar is welded diagonally to the upper and lower rows of I-beams to limit the lateral movement of the upright. The bottom of the corner uprights can be welded to the I-beams to enhance the integrity of the frame and the base.

[0028] Specially designed casters: A steel plate is installed on the top to provide a stress contact surface for the second row of I-beams. Specially designed casters are installed on the two outermost I-beams, arranged at equal intervals along the direction of frame movement, with a height of 210mm. Each caster can withstand a weight of 1.2 tons.

[0029] The operating platform is fully covered with steel hook-type scaffold boards at one span below the beam or slab, and a 1200mm high fixed protective structure is erected around it. The movable frame on the operating platform is connected to the surrounding frame.

[0030] In the high formwork system, the movable formwork support uprights and the immovable formwork support uprights are connected by disc buckle crossbars. If the modules of the movable formwork support uprights and the immovable formwork support uprights do not match, steel pipe fasteners are used to connect them to form a whole, and each side can be extended by one span.

[0031] In the high-support formwork system, each movable frame is supported by 12# steel wire ropes that are diagonally connected to the second row of I-beams within the span from the upright node at the operating platform position. The system is symmetrically arranged with two ropes on each side.

[0032] The requirements for scaffolding erection are the same as those for normal high-support formwork scaffolding.

[0033] A construction method for a high formwork system, comprising the following steps:

[0034] Erection: First, the ground for erecting the scaffold must be flat and have sufficient bearing capacity.

[0035] Plan the dimensions of the I-beams and the width of the scaffolding in advance, and weld the bases of the two rows of I-beams into a whole;

[0036] The high-support scaffolding is erected on site according to the dimensions of the I-beams and the width of the scaffolding. All standard-distance scaffolding is placed on the I-beam limit bars.

[0037] The bottom of the beams and areas with irregular shapes are constructed using conventional methods, forming an integral whole with the platform frame;

[0038] Demolition and relocation: Demolition will be carried out after the concrete strength reaches the design requirements. The demolition will be carried out on the upper part of the scaffolding that is fully covered with steel hook-type scaffolding boards, while the remaining parts of the scaffolding will remain unchanged.

[0039] After using jacks to lift the I-beams, place them on casters to move them along the planned direction of the frame. A hydraulic manual forklift can be added for auxiliary movement.

[0040] After the scaffold is moved to the next construction area, the upper scaffold and beam bottom supports are erected to reinforce and connect them into a whole. This reduces the time spent on the secondary transportation of the formwork during erection and dismantling on site, improves construction efficiency, and shortens the construction cycle of the high formwork system. It has broad market prospects.

[0041] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high formwork system, characterized in that, This high-support formwork system combines an operating platform with a frame structure, wherein the bottom of the operating platform includes: I-beam base: 16# I-beams are used. The first row of I-beams serves as the base of the uprights and is set parallel to the direction of frame movement. The spacing is the same as the spacing of the upper uprights. The second row of I-beams serves as the load-bearing frame of the forklift lifting frame and the placement point for the special casters. It is set on the upper part of the first row of I-beams. The two rows of I-beams are fully welded to form a whole. Limiting reinforcement bars: The ends of the reinforcing bars are welded to the upper and lower rows of I-beams. One bar is welded vertically to the first row of I-beams, and the bottom of the upright can be inserted into it. The other bar is welded diagonally to the upper and lower rows of I-beams to limit the lateral movement of the upright. The bottom of the corner uprights can be welded to the I-beams to enhance the integrity of the frame and the base. Specially designed casters: A steel plate is installed on the top to provide a stress contact surface for the second row of I-beams. Specially designed casters are installed on the two outermost I-beams, arranged at equal intervals along the direction of frame movement, with a height of 210mm. Each caster can withstand a weight of 1.2 tons. The operating platform is fully covered with steel hook-type scaffold boards at one span below the beam or slab, and a 1200mm high fixed protective structure is erected around it. The movable frame on the operating platform is connected to the surrounding frame. In the high formwork system, the movable formwork support uprights and the immovable formwork support uprights are connected by disc buckle crossbars. If the modules of the movable formwork support uprights and the immovable formwork support uprights do not match, steel pipe fasteners are used to connect them to form a whole, and each side can be extended by one span. In the high-support formwork system, each movable frame is supported by 12# steel wire ropes that are diagonally connected to the second row of I-beams within the span from the upright node at the operating platform position. The system is symmetrically arranged with two ropes on each side.

2. A high formwork system according to claim 1, characterised in that: The scaffolding erection requirements are consistent with those for normal high-support formwork scaffolding.

3. A construction method for a high formwork system according to any one of claims 1-2, characterized in that: The construction method includes the following steps: Erection: First, the ground for erecting the scaffold must be flat and have sufficient bearing capacity. Plan the dimensions of the I-beams and the width of the scaffolding in advance, and weld the bases of the two rows of I-beams into a whole; The high-support scaffolding is erected on site according to the dimensions of the I-beams and the width of the scaffolding. All standard-distance scaffolding is placed on the I-beam limit bars. The bottom of the beams and areas with irregular shapes are constructed using conventional methods, forming an integral whole with the platform frame; Demolition and relocation: Demolition will be carried out after the concrete strength reaches the design requirements. The demolition will be carried out on the upper part of the scaffolding that is fully covered with steel hook-type scaffolding boards, while the remaining parts of the scaffolding will remain unchanged. After using jacks to lift the I-beams, place them on casters to move them along the planned direction of the frame. A hydraulic manual forklift can be added for auxiliary movement. After the scaffold is moved to the next construction area, the upper scaffold and beam bottom support are erected to reinforce and connect them into a whole.

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