Construction method for alternately supporting and power conversion of formwork platform site

Abstract

This invention provides a construction method for alternating support and power conversion of a formwork platform. By determining the location of the formwork platform where interference exists between the formwork platform and the extended corbel of the giant concrete column during the construction of a concrete mega-column using a hydraulic self-climbing formwork, and the number of the concrete mega-column layers, a reserved beam for the platform is pre-positioned on the layer before the interference point to install a new wall-mounted mechanism, thus achieving the support conversion between the old and new platform positions (i.e., the reserved platform position and platform X). Then, the climbing power system of platform X is moved to the reserved platform position, achieving the power conversion between the old and new platform positions. The entire conversion process does not require dismantling and reassembling the formwork platform, solving the problem of avoiding building obstacles during the lifting of the formwork platform. The construction process is simple to operate, effectively improving the construction progress and efficiency, and reducing construction risks.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and in particular to a construction method for alternating support and power conversion of a formwork platform. Background Technology

[0002] With the continuous development of construction technology in China, various high-rise and super high-rise buildings have become landmark buildings in urban renewal and construction. (Reference) Figure 1 and Figure 2 High-rise (and super high-rise) buildings generally employ a concrete core tube and steel outer frame structural system. To meet stiffness requirements during the design process, a reinforcing layer consisting of outrigger trusses and waist trusses is installed between the core tube and the outer frame columns. The upper and lower chords and web members of the outrigger trusses connect to the corbels of the steel columns inside the core tube walls and the mega-columns of the outer frame. The outrigger trusses also connect to the upper and lower chords and web members of the waist trusses, forming an integrated truss system with the reinforcing layer. Depending on the structural design requirements, one or more reinforcing layers are installed along the height of the building.

[0003] The construction sequence for the concrete core tube and steel frame structure system is as follows: the core tube and outer frame mega-columns are constructed first using a formwork platform, while the steel frame surrounding the core tube and some floor slabs are constructed later using scaffolding. When the core tube construction reaches the strengthening layer, after the core tube and mega-columns with corbels are hoisted and installed, the concrete for the strengthening layer core tube and mega-columns is poured. The corbels of the steel columns extend beyond the wall surface, and the outrigger trusses and waist trusses are installed when the later-arrived steel frame construction reaches the strengthening layer.

[0004] When a building has only one reinforcing layer, the formwork platform climbing machine positions can be rationally arranged according to the location of the steel column corbels. During climbing, the interference walkway panels or platform beams can be opened to complete the construction of the reinforcing layer. However, when a building has multiple reinforcing layers, as the core tube shrinks and the outer frame shape changes, the cross-sectional size, extension length, and extension angle of the steel column corbels in the core tube walls and mega-columns will also change. When constructing such complex multi-layered reinforcing structures, the formwork platform climbing machine positions cannot avoid all the steel column corbels. The formwork platform must be dismantled, and cantilevered scaffolding erected. After the construction of multiple reinforcing layers is completed, the formwork platform must be reinstalled. This construction method is complex and difficult, affecting construction progress and efficiency, and the risks during the construction process are difficult to control. Summary of the Invention

[0005] The purpose of this invention is to provide a construction method for alternating support and power conversion of a formwork platform, which solves the problem of avoiding obstacles in the building during the lifting process of the formwork platform without dismantling and rebuilding the formwork platform.

[0006] To solve the above-mentioned technical problems, the present invention provides a construction method for alternating support and power conversion of a formwork platform, the construction method for alternating support and power conversion of the formwork platform comprising:

[0007] S1: Preparatory work before construction:

[0008] Based on the design drawings, the locations of the formwork machine positions that interfere with the extended corbels of the steel column of the mega-concrete column during the construction of the concrete mega-column using hydraulic self-climbing formwork, as well as the number of layers of the concrete mega-column, are determined. The determined formwork machine position is defined as machine position X, and the determined number of layers is defined as layer N, where N is an integer greater than or equal to 2.

[0009] Install a reserved machine position beam on the operating frame outside the N-1th layer of concrete mega-column;

[0010] Install a sliding beam on the operating frame on the outside of the concrete mega-column above the Nth floor, and install a sliding power device on the sliding beam;

[0011] S2: Activate the reserved machine position support: Before pouring the N-1th layer of concrete mega-column, according to the position of the pre-embedded machine position beam, pre-embed the pre-embedded load-bearing bolts of the attachment mechanism in the N-1th layer of concrete mega-column; after the N-1th layer of concrete mega-column is poured, cured and demolded, first connect the wall attachment device of the wall attachment mechanism to the pre-embedded load-bearing bolts and then connect the load-bearing triangular frame to the pre-embedded machine position beam to complete the installation of the wall attachment structure and the pre-embedded machine position on the outside of the N-1th layer of concrete mega-column;

[0012] S3: Dismantle and relocate the climbing power system at position X:

[0013] Remove the hydraulic control system of the climbing power system at unit X to disable the power drive of unit X;

[0014] The remaining parts of the climbing power system are removed from position X, and the remaining parts of the removed climbing power system are transferred to the reserved position based on the sliding power device, so that they are installed with the load-bearing tripod of the reserved position, so that the remaining parts of the climbing power system at position X are transferred and installed to the reserved position.

[0015] S4: Support conversion between X-position and reserved position: Remove the wall attachment device of the attachment mechanism at X-position and the load-bearing tripod at X-position to stop the support of X-position.

[0016] S5: Move the climbing guide rail at position X to the reserved position;

[0017] S6: Power conversion between machine position X and reserved machine position: Install the hydraulic control system removed in S3 onto the rest of the climbing power system at the reserved machine position to start the power drive of the reserved machine position.

[0018] Optionally, in the construction method of alternating support and power conversion of the formwork platform, in step S1, the sliding power device includes a sliding device, an electric hoist, and a drive device, and the installation of the sliding power device on the sliding beam includes the following steps:

[0019] Install the sliding device on the sliding beam;

[0020] Hang the electric hoist hook onto the sliding device;

[0021] The drive unit is electrically connected to the sliding device to drive the sliding device to move along the sliding beam, thereby driving the electric hoist to move the cabinet left and right along the sliding beam.

[0022] Optionally, in the construction method of alternating support and power conversion of the formwork platform, in step S3, removing the remaining part of the climbing power system from position X means: removing the connecting pin between the upper climber of the climbing power system and the load-bearing tripod.

[0023] Optionally, in the construction method of alternating support and power conversion of the formwork platform positions, in step S3, the transfer and installation of the remaining part of the climbing power system at position X to the reserved position further includes the following steps:

[0024] Install the remaining parts of the climbing power system with the lifting clamps to ensure the overall stability of the remaining parts of the climbing power system;

[0025] The lifting lugs of the lifting clamp are used to suspend the sliding power device to transfer the remaining parts of the dismantled climbing power system to the reserved machine position.

[0026] Remove the lifting clamp from the rest of the climbing power system and lift it away from the lifting clamp;

[0027] Install the remaining parts of the climbing power system with the load-bearing tripod of the reserved machine position.

[0028] Optionally, in the construction method of alternating support and power conversion of the formwork platform, the process of installing the remaining parts of the climbing power system with the hoisting fixture includes the following steps:

[0029] The upper and lower climbers of the climbing power system are connected to the lifting clamps via pins.

[0030] Optionally, in the construction method of alternating support and power conversion of the formwork platform, step S5 includes:

[0031] The climbing guide rail at machine position X was hoisted to the wall attachment mechanism at the reserved machine position using a tower crane.

[0032] In the construction method of alternating support and power conversion of formwork platform positions provided by this invention, by determining the position of the formwork platform where there is interference between the formwork platform position and the extended corbel of the steel column of the giant concrete column during the construction of the concrete giant column using hydraulic self-climbing formwork, and the number of the concrete giant column, a reserved machine position beam is laid out in advance on the layer before the interference to install a new wall attachment mechanism, realizing the support conversion between the old and new machine positions (i.e., the reserved machine position and machine position X), and then the climbing power system of machine position X is moved to the reserved machine position to realize the power conversion between the old and new machine positions. The entire conversion process does not require dismantling and reinstalling the formwork platform, solving the problem of avoiding building obstacles during the lifting of the formwork platform. The construction process is simple to operate, effectively improving the construction progress and efficiency, and reducing the construction risk. Attached Figure Description

[0033] The above and other objects, features and advantages of this disclosure will become more apparent from the accompanying drawings, in which like reference numerals generally denote like parts.

[0034] Figure 1 This is a partial schematic diagram of the core tube truss system;

[0035] Figure 2 This is a partial schematic diagram of a concrete mega-column truss system;

[0036] Figure 3 This is an elevation view of a hydraulic self-climbing formwork.

[0037] Figure 4 This is a schematic diagram of the mold frame location;

[0038] Figure 5 This is a schematic diagram of the climbing power system;

[0039] Figure 6 This is a schematic diagram of the wall-mounting mechanism;

[0040] Figure 7 This is a plan view of the N-layer mold frame machine position arrangement in one embodiment of the present invention;

[0041] Figure 8 This is a plan view of the N+P layer mold frame machine position arrangement in one embodiment of the present invention;

[0042] Figure 9 This is a plan view of a hydraulic self-climbing formwork frame with a pre-reserved machine position crossbeam in one embodiment of the present invention;

[0043] Figure 10 This is an elevation view of the portion of the hydraulic self-climbing mold frame in one embodiment of the present invention in which a sliding power device is installed;

[0044] Figure 11This is an elevation view of the assembly of the lifting clamp and the climbing power system in one embodiment of the present invention;

[0045] Figure 12 This is a top view of the hoisting clamp and climbing power system assembly in one embodiment of the present invention;

[0046] Figure 13 This is a flowchart of the construction method for alternating support and power conversion of the formwork platform in this invention. Detailed Implementation

[0047] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, provides a more detailed explanation of the construction method for alternating support and power conversion of the formwork platform proposed in this invention. The advantages and features of this invention will become clearer from the following description and claims. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this invention.

[0048] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0049] In the description of the invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.

[0050] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0051] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., 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 according to the specific circumstances.

[0052] Please refer to Figures 3 to 13 The construction method for alternating support and power conversion of the formwork platform includes the following steps:

[0053] The manufacturing method of the construction method of alternating support and power conversion of the formwork platform described in this embodiment.

[0054] First, please refer to Figures 7 to 10 Proceed to step S1, the preparatory work before construction, as follows:

[0055] Based on the design drawings, the locations of the formwork machine positions that interfere with the extended corbels of the steel column of the mega-concrete column during the construction of the concrete mega-column using hydraulic self-climbing formwork, as well as the number of layers of the concrete mega-column, are determined. The determined formwork machine position is defined as machine position X, and the determined number of layers is defined as layer N, where N is an integer greater than or equal to 2.

[0056] Install a reserved machine position beam on the operating frame outside the N-1th layer of concrete mega-column;

[0057] A sliding beam is installed on the operating frame outside the concrete mega-column above the Nth floor, and a sliding power device is installed on the sliding beam. The sliding power device includes a sliding device, an electric hoist, and a drive device. The installation of the sliding power device on the sliding beam includes the following steps: installing the sliding device on the sliding beam; hooking the electric hoist onto the sliding device; and electrically connecting the drive device to the sliding device to drive the sliding device to move along the sliding beam, thereby driving the electric hoist to move the cabinet left and right along the sliding beam.

[0058] Next, proceed to step S2 and activate the reserved machine position support: Before pouring the N-1th layer of concrete mega-column, according to the position of the pre-embedded machine position beam, pre-embed the pre-embedded load-bearing bolts of the attachment mechanism in the N-1th layer of concrete mega-column; after the N-1th layer of concrete mega-column is poured, cured and demolded, first connect the wall attachment device of the wall attachment mechanism to the pre-embedded load-bearing bolts and then connect the load-bearing triangular frame to the pre-embedded machine position beam to complete the installation of the wall attachment structure and the pre-embedded machine position on the outside of the N-1th layer of concrete mega-column;

[0059] Next, please refer to Figures 3 to 5Execute step S3 to dismantle and relocate the climbing power system of machine position X: (e.g.) Figure 5 As shown, the hydraulic control system of the climbing power system at unit X is dismantled to disable the power drive at unit X; the remaining parts of the climbing power system are removed from unit X, and the dismantled remaining parts of the climbing power system are transferred to the reserved unit location using a sliding power device, so that they are installed with the load-bearing tripod of the reserved unit location; for details, please refer to Figures 3 to 5 The separation of the two is achieved by removing the connecting pin between the upper climber of the climbing power system and the load-bearing tripod.

[0060] In addition, a hoisting clamp was specifically designed before construction. Before relocation, the hoisting clamp was connected to the climbing power system to ensure the integrity of the climbing power system during the subsequent relocation process. Therefore, the process of transferring and installing the remaining parts of the climbing power system at position X to the reserved position also includes the following steps:

[0061] The remaining parts of the climbing power system are installed with the lifting fixture. Specifically, the upper and lower climbers of the climbing power system are connected to the lifting fixture via pins to ensure the overall stability of the remaining parts of the climbing power system during relocation. The lifting lugs of the lifting fixture are used to suspend the dismantled remaining parts of the climbing power system to the reserved machine position. The lifting fixture is then removed from the remaining parts of the climbing power system and lifted away from the lifting fixture. Finally, the remaining parts of the climbing power system are installed with the load-bearing tripod of the reserved machine position.

[0062] Next, proceed to step S4, the support conversion between camera position X and the reserved camera position: remove the wall attachment device of the attachment mechanism at camera position X and the load-bearing tripod at camera position X to stop the support of camera position X.

[0063] Next, proceed to step S5, which involves transferring the climbing guide rail at unit X to the reserved unit location. Specifically, a tower crane is used to hoist the climbing guide rail at unit X to the wall-mounted mechanism at the reserved unit location.

[0064] Next, execute step S6, power conversion between machine position X and reserved machine position: install the hydraulic control system removed in S3 onto the rest of the climbing power system at the reserved machine position to start the power drive of the reserved machine position.

[0065] In summary, the alternating support and power conversion process of the formwork platform of the present invention uses new formwork platform components and attachment mechanisms on the reserved positions. The climbing power system and climbing guide rail used on the reserved positions are transferred from the old formwork platform positions, thereby solving the problem of interference between the old formwork platform positions and the cantilever brackets of the giant steel columns.

[0066] The construction method of this invention determines the location of the formwork machine position where interference exists between the formwork machine position and the extended corbel of the giant concrete column during the construction of a concrete mega-column using a hydraulic self-climbing formwork, as well as the number of floors of the concrete mega-column. This allows for the pre-layout of a reserved machine position beam on the floor preceding the interference point, facilitating the installation of a new wall-mounted mechanism and achieving a support conversion between the old and new machine positions (i.e., the reserved machine position and machine position X). The climbing power system of machine position X is then moved to the reserved machine position, achieving a power conversion between the old and new machine positions. The entire conversion process does not require dismantling and reassembling the formwork platform, solving the problem of avoiding obstacles in the building during the formwork platform lifting process. The construction process is simple to operate, effectively improving construction progress and efficiency while reducing construction risks.

[0067] To better understand the construction method of this invention, the following is combined with... Figures 3 to 13 The text describes the various construction components involved in the construction method (such as hydraulic self-climbing formwork and its parts), and provides detailed explanations with specific examples.

[0068] Please refer to Figures 3 to 6 Because the outer contour of the mega-column concrete structure gradually tapers inward with the floor height, and the angle of the steel column brackets extending outward changes with the floor height, the mega-column concrete structure is constructed using a hydraulic self-climbing formwork. This hydraulic self-climbing formwork includes an operating frame, formwork positions, climbing guide rails, attachment mechanisms, and a climbing power system. The operating frame includes a rebar tying operating frame, a formwork operating frame, and an equipment operating frame. All operating frames include upright columns and platforms. The rebar tying operating frame, located at the top, provides an operating platform for concrete pouring and rebar tying. The formwork operating frame, located in the middle, provides an operating platform for formwork assembly and disassembly. The equipment operating frame, located at the bottom, provides an operating platform for equipment operation.

[0069] like Figure 4 As shown, the mold frame position includes a frame beam and a load-bearing triangular frame; as Figure 5 As shown, the climbing power system includes an upper climber, a lower climber, jacks, and a hydraulic control system. The hydraulic control system includes a hydraulic pump station, oil circuits, and hydraulic control valves to provide power to the climbing power system; for example... Figure 3 As shown, climbing guide rails have climbing holes as climbing load-bearing points; as Figure 6As shown, the attachment mechanism includes pre-embedded load-bearing bolts and wall-mounting devices. After assembly, the formwork frame and climbing power system are installed at the bottom of the formwork operating frame, surrounded by the equipment operating frame also installed at the bottom of the formwork operating frame. The climbing guide rails are inserted into the wall-mounting mechanism, and the upper and lower climbing devices of the climbing power system are attached to the climbing holes of the climbing guide rails. At this point, the entire hydraulic self-climbing formwork frame is attached to the outer contour of the concrete mega-column via the wall-mounting mechanism. The hydraulic pump station of the climbing control system is connected to the jacks through oil lines and control valves. The climbing control system provides power to control the jacks to drive the climbing devices to climb alternately, thereby driving the formwork frame and guide rails to rise alternately, allowing the hydraulic self-climbing formwork frame to climb upwards along the outer wall of the mega-column.

[0070] Please refer to Figures 7 to 12 ,like Figure 7 As shown, when installing the hydraulic self-climbing formwork on the Nth floor, eight formwork positions (numbered ①, ②, ③, ④, ⑤, ⑥, ⑦, and ⑧) are arranged along the outer contour of the mega-column. During construction up to the N+P floor, position 7 (corresponding to position ⑦, which is equivalent to position X in the aforementioned construction method) interferes with the steel column's extended corbel (see...). Figure 8 Considering the above working conditions, a pre-reserved crossbeam for the machine position was added to the original machine position when designing the mold frame (see...). Figure 9 A sliding beam is installed on the formwork frame, and a sliding device is mounted on the sliding beam. An electric hoist hook is hung on the sliding device, and a sliding drive device is arranged on the top platform of the sliding beam (see...). Figure 10 This constitutes the sliding power device. The working principle of the sliding power device is as follows: the sliding drive device drives the sliding device to move horizontally via an electrical connection, while the electric hoist hooked on the sliding device drives the object to move vertically. Considering the later relocation of the climbing power system, a lifting clamp is designed. Before relocation, this clamp is connected to the upper and lower climbing pins of the climbing power system to ensure the integrity of the climbing power system during relocation. See [link to details]. Figure 11 , Figure 12 .

[0071] It should be noted that, for the sake of simplicity, the foregoing method embodiments are all described as a series of actions. However, those skilled in the art should understand that this application is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to this application. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to this application.

[0072] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0073] The above description is merely a description of preferred embodiments of the present invention and is not intended to limit the scope of the present invention in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A construction method for alternating support and power conversion of a formwork platform, characterized in that, include: S1: Preparatory work before construction: Based on the design drawings, the hydraulic self-climbing formwork was used to construct the concrete mega-column. The positions of the formwork machine positions that interfered with the steel column extension brackets of the mega-column and the number of the formwork machine positions on the concrete mega-column were determined. The determined formwork machine positions were defined as machine positions X and the determined number of layers was defined as the Nth layer, where N is an integer greater than or equal to 2. Install a reserved machine position beam on the operating frame outside the N-1th layer of concrete mega-column; Install a sliding beam on the operating frame on the outside of the concrete mega-column above the Nth floor, and install a sliding power device on the sliding beam; S2: Activate the reserved machine position support: Before pouring the N-1th layer of concrete mega-column, according to the position of the pre-embedded machine position beam, pre-embed the pre-embedded load-bearing bolts of the attachment mechanism in the N-1th layer of concrete mega-column; after the N-1th layer of concrete mega-column is poured, cured and demolded, first connect the wall attachment device of the wall attachment mechanism to the pre-embedded load-bearing bolts and then connect the load-bearing triangular frame to the pre-embedded machine position beam to complete the installation of the wall attachment structure and the pre-embedded machine position on the outside of the N-1th layer of concrete mega-column; S3: Dismantle and relocate the climbing power system at position X: Remove the hydraulic control system of the climbing power system at unit X to disable the power drive of unit X; The remaining parts of the climbing power system are removed from position X, and the removed remaining parts of the climbing power system are transferred to the reserved position based on the sliding power device, so that they are installed with the load-bearing tripod of the reserved position, so as to transfer and install the remaining parts of the climbing power system at position X to the reserved position; wherein, the transfer and installation of the remaining parts of the climbing power system at position X to the reserved position also includes the following steps: Install the remaining parts of the climbing power system with the lifting clamps to ensure the overall stability of the remaining parts of the climbing power system; The lifting lugs of the lifting clamp are used to suspend the sliding power device to transfer the remaining parts of the dismantled climbing power system to the reserved machine position. Remove the lifting clamp from the rest of the climbing power system and lift it away from the lifting clamp; Install the remaining parts of the climbing power system with the load-bearing tripod of the reserved machine position; S4: Support conversion between X-position and reserved position: Remove the wall attachment device of the attachment mechanism at X-position and the load-bearing tripod at X-position to stop the support of X-position. S5: Move the climbing guide rail at position X to the reserved position; S6: Power conversion between machine position X and reserved machine position: Install the hydraulic control system removed in S3 onto the rest of the climbing power system at the reserved machine position to start the power drive of the reserved machine position.

2. The construction method for alternating support and power conversion of the formwork platform as described in claim 1, characterized in that, In step S1, the sliding power device includes a sliding device, an electric hoist, and a driving device. Installing the sliding power device on the sliding beam includes the following steps: Install the sliding device on the sliding beam; Hang the electric hoist hook onto the sliding device; The drive unit is electrically connected to the sliding device to drive the sliding device to move along the sliding beam, thereby driving the electric hoist to move along the sliding beam.

3. The construction method for alternating support and power conversion of the formwork platform as described in claim 1, characterized in that, In step S3, removing the remaining parts of the climbing power system from position X means: removing the connecting pin between the upper climber of the climbing power system and the load-bearing tripod.

4. The construction method for alternating support and power conversion of the formwork platform as described in claim 1, characterized in that, The process of installing the remaining parts of the climbing power system with the lifting fixture includes the following steps: The upper and lower climbers of the climbing power system are connected to the lifting clamps via pins.

5. The construction method for alternating support and power conversion of the formwork platform as described in claim 1, characterized in that, Step S5 includes: The climbing guide rail at machine position X was hoisted to the wall attachment mechanism at the reserved machine position using a tower crane.

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