Horizontal sliding formwork device and construction method for continuous equal-span frame structure ribbed floor slab

Abstract

This invention discloses a horizontal sliding formwork device and construction method for ribbed floor slabs in continuous equal-span frame structures, belonging to the field of construction equipment. The horizontal sliding device for continuous equal-span frame structures provided by this invention transfers the load to the already poured concrete columns through a sliding base, thereby forming support for the platform. After the platform is assembled on the ground, it can be directly hoisted onto the sliding base to complete the formwork work for the ribbed floor slabs. Furthermore, after the construction within the corresponding area is completed, the position can be changed through the lowering, sliding, and raising operations of jacks and other lifting equipment, saving a significant amount of construction time and demonstrating good economic benefits.

Description

Technical Field

[0001] This invention belongs to the field of construction equipment, specifically relating to a horizontal sliding formwork device and construction method for a continuous equal-span frame structure ribbed floor slab. Background Technology

[0002] Concrete structure logistics plant projects are characterized by high single-story heights and large areas. Current construction methods mainly include traditional formwork and scaffolding support, sliding construction, and prefabricated construction, all of which have certain problems. Traditional formwork and scaffolding support consumes a large amount of reusable materials and increases the workload of transportation. Sliding construction methods are currently mainly divided into ground-based sliding or track-based sliding platforms. Ground-based sliding still consumes a significant amount of scaffolding, while track-based sliding platforms involve extensive formwork erection and dismantling during the sliding process. Prefabricated structures suffer from low hoisting efficiency, high investment in hoisting machinery, high safety risks, and difficulties in installing beam-column joints. Summary of the Invention

[0003] The purpose of this invention is to solve the problems of difficult sliding construction, high consumption of materials and labor for formwork erection and dismantling, and low construction efficiency in the construction of concrete structure logistics plant projects in the prior art, and to provide a horizontal sliding formwork device and construction method for continuous equal span frame structure ribbed floor slabs.

[0004] The specific technical solution adopted in this invention is as follows:

[0005] In a first aspect, the present invention provides a horizontal sliding formwork device for a continuous equal-span frame structure ribbed floor slab, which includes a sliding base and a ribbed floor slab support platform;

[0006] The sliding base includes a first support assembly, a track beam, a lifting mechanism, and a second support assembly. The first support assemblies are arranged in pairs, each pair capable of being installed on pre-cast concrete columns on both sides of the construction area, collectively forming a support structure for the track beam. Two track beams are erected parallel to each other on the support structure on both sides of the construction area. At least two lifting mechanisms are installed on each track beam, and each lifting mechanism has a sliding assembly at its bottom that cooperates with the track beam. The sliding assembly can control the lifting mechanism to slide along the track beam and lock in a limited position. The displacement output end of each lifting mechanism passes through an independent second support assembly, which can be detachably fixed to the pre-cast concrete column. Both the displacement output end of the lifting mechanism and the second support assembly can support the ribbed floor slab formwork platform above.

[0007] The bottom of the ribbed floor slab formwork platform is synchronously lifted and displaced horizontally along the track beam direction by multiple lifting mechanisms in the sliding base.

[0008] As a preferred embodiment of the first aspect, the ribbed floor slab formwork platform includes main beams, secondary beams, vertical rods, main ribs, and secondary ribs; there are two main beams, which are arranged parallel to each other above two track beams, and the bottom of each main beam is supported on the displacement output end of the lifting mechanism and the second support component below; multiple secondary beams are placed and fixed between the two main beams, and a secondary rib is horizontally mounted on each secondary beam, and the main rib is supported on the secondary beam by multiple vertical rods; all secondary ribs are placed on the main ribs at intervals to form a placement plane for the formwork; an adjustable auxiliary support is vertically installed at the bottom of the middle part of each secondary beam, and during the pouring of the ribbed floor slab, the auxiliary support is supported on the ground to transfer part of the load on the secondary beam to the ground.

[0009] As a preferred embodiment of the first aspect above, the auxiliary support is composed of a fixed support column and an adjustable base. The top of the fixed support column is connected to a secondary beam, and the bottom is connected to the adjustable base. The adjustable base needs to be removed or its height shortened before the ribbed floor slab formwork platform is lowered from the pouring height to avoid interference.

[0010] As a preferred embodiment of the first aspect, a connecting rod is provided at the connection position between the secondary beam and the vertical rod, and the different secondary beams and vertical rods are integrally connected by the connecting rod.

[0011] As a preferred embodiment of the first aspect, a connecting rod is provided at the connection position between the main rib and the vertical rod, and the different main ribs and vertical rods are integrally connected by the connecting rod.

[0012] As a preferred embodiment of the first aspect mentioned above, the track beam, main beam, secondary beam, and vertical rod are all made of H-beams.

[0013] 7. As a preferred embodiment of the first aspect above, the lifting mechanism is a hydraulic jack.

[0014] As a preferred embodiment of the first aspect, both the first support assembly and the second support assembly are tripods, and the tripods are fixed to the side of the poured concrete column by anchor bolts.

[0015] As a preferred embodiment of the first aspect, the sliding assembly at the bottom of the lifting mechanism that cooperates with the track beam includes a clamp, a guide wheel, and a locking element. The clamp is installed at the bottom of the lifting mechanism and is wrapped around the upper flange of the track beam to prevent derailment. The guide wheel is built into the clamp and can slide on the upper surface of the track beam. The load on the lifting mechanism above the clamp is transmitted to the track beam through the guide wheel. The locking element can restrict the relative movement between the clamp and the track beam.

[0016] In a second aspect, the present invention provides a construction method using the horizontal sliding formwork device for continuous equal-span frame structure ribbed floor slabs as described in any of the first aspects, comprising:

[0017] S1. For the construction area of ​​the ribbed floor slab in the continuous equal span frame structure, concrete columns are poured on both sides of the construction area in advance and cured to form two rows of poured concrete columns.

[0018] S2. Install the first support component suspended inside each of the cast concrete columns, and keep the first support component on each row of cast concrete columns at the same elevation. Erect and fix a continuous track beam on the first support component on each row of cast concrete columns.

[0019] S3. Install at least two lifting mechanisms on each track beam, adjust the position of the lifting mechanisms on the track beam to be located in the first construction sub-area, lock each lifting mechanism on the track beam at the position of a cast-in-place concrete column, and fix the second support component at the top of the lifting mechanism to the corresponding cast-in-place concrete column; then pre-assemble the ribbed floor slab formwork platform on the ground, and hoist and fix the ribbed floor slab formwork platform as a whole onto the support plane formed by the displacement output ends of all lifting mechanisms and the second support component;

[0020] S4. After the ribbed floor slab formwork platform is hoisted and fixed, the formwork required for construction is laid on the secondary beams, and auxiliary supports are installed below the middle of each secondary beam of the ribbed floor slab formwork platform to form a construction platform.

[0021] S5. Adjust the height of the auxiliary support under each secondary beam in the ribbed floor slab formwork platform so that its bottom is supported on the ground, forming a support effect on the middle of the secondary beam; then tie the reinforcing bars above the formwork and pour the concrete.

[0022] S6. After the concrete curing of the ribbed floor slab is completed and the beam formwork is removed, adjust the auxiliary supports installed under each secondary beam to leave enough space at the bottom to avoid interfering with the descent of the ribbed floor slab formwork platform; remove the connection between the second support component and the existing poured concrete column.

[0023] S7. By controlling the displacement output end of the lifting mechanism to descend, the ribbed floor slab formwork platform is lowered as a whole to the height that allows for translation, thus avoiding interference with other structures during the translation process.

[0024] S8. Release the lock between the lifting mechanism and the track beam, and push all lifting mechanisms to move synchronously along the track beam, thereby moving the ribbed floor slab formwork platform to the next construction sub-area. After positioning, resynchronize and control the displacement output end of the lifting mechanism to rise, thereby raising the ribbed floor slab formwork platform as a whole to the required construction height. Then connect and fix the second support component to the corresponding poured concrete column, and then carry out construction on the next construction sub-area according to S5.

[0025] Compared with the prior art, the present invention has the following advantages:

[0026] This invention is designed for high-rise, large-area frame structures, and is mainly used for the construction of ribbed floor slabs in continuous equal-span frame structures. The overall formwork steel platform can be directly assembled in the factory or on the ground, and then directly hoisted and laid, saving scaffolding and formwork erection time. It can also complete the turnover and transportation of materials through sliding, which greatly improves construction efficiency. Attached Figure Description

[0027] Figure 1 A schematic diagram of a horizontal sliding formwork device for a continuous equal-span frame ribbed floor slab.

[0028] Figure 2 This is a schematic diagram of the installation of the lifting mechanism;

[0029] Figure 3 This is a schematic diagram of the jacking mechanism being assembled on the track beam.

[0030] Figure 4 A schematic diagram of a ribbed floor slab formwork platform (only half is shown);

[0031] Figure 5 This is a schematic diagram of the assembly of the ribbed floor slab formwork platform and the lifting mechanism.

[0032] Figure 6 This is a schematic diagram of the construction status of the horizontal sliding formwork device;

[0033] Figure 7 This is a plan view of the horizontal sliding formwork device in the construction area;

[0034] Figure 8 This is a schematic diagram of the key steps in the construction method of the present invention.

[0035] The attached diagram is labeled as follows: First support component 1, track beam 2, lifting mechanism 3, second support component 4, main beam 5, secondary beam 6, connecting rod 7, vertical rod 8, main joist 9, secondary joist 10, formwork 11, fixed support column 12, adjustable base 13, poured concrete column 14, ground 15. Detailed Implementation

[0036] The present invention will be further described and illustrated below with reference to the accompanying drawings and specific embodiments. The technical features of each embodiment of the present invention can be combined accordingly, provided that there is no mutual conflict.

[0037] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below. Technical features in the various embodiments of the present invention can be combined accordingly without mutual conflict.

[0038] In the description of this invention, it should be understood that when an element is considered to be "connected" to another element, it can be a direct connection to the other element or an indirect connection, i.e., there is an intermediate element. Conversely, when an element is said to be "directly" connected to another element, there is no intermediate element.

[0039] In the description of this invention, it should be understood that the terms "first" and "second" are used only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" and "second" may explicitly or implicitly include at least one of those features.

[0040] like Figure 1 As shown, in a preferred embodiment of the present invention, a horizontal sliding formwork device for a continuous equal-span frame structure ribbed floor slab is provided. The main body can be divided into two parts: a sliding base and a ribbed floor slab support platform. The sliding base supports the entire ribbed floor slab support platform, meaning the ribbed floor slab support platform can be mounted on the sliding base and moved to perform construction on different construction areas. The specific structures of the sliding base and the ribbed floor slab support platform are described in detail below.

[0041] like Figure 2As shown, the sliding base includes a first support component 1, a track beam 2, a lifting mechanism 3, and a second support component 4, directly connected to the main beam 5 of the ribbed floor slab formwork platform. The first support component 1 forms the installation points for the sliding base on the concrete main structure of the factory building. In this invention, the first support component 1 is installed on the pre-cast concrete columns 14 on both sides of the construction area. Generally, the concrete columns in the factory building are installed in rows on both sides of the construction area; therefore, the first support components 1 also need to be arranged in pairs, with each pair of first support components 1 installed on the corresponding two pre-cast concrete columns 14 on both sides of the construction area. All first support components 1 must be installed at the same height to collectively form the support structure for installing the track beam 2. Two track beams 2 are erected parallel to each other on the support structure formed by all the first support components 1 on both sides of the construction area. To ensure reliable fixation, the track beam 2 can be placed on the upper surface of the lower first support component 1, and the two are connected by bolts. Therefore, these two track beams 2 serve as the sliding track for the sliding base.

[0042] The form of the first support component 1 in this invention is not limited, as long as it meets the requirements of ease of installation and structural stability. In an embodiment of this invention, the first support component 1 is a steel tripod, which can be fixed to the side of the cast-in-place concrete column 14 by anchor bolts. The right-angled side of the tripod is installed against the side of the cast-in-place concrete column 14, and it can be anchored at both the top and bottom. Internal struts can be installed inside to enhance structural stability.

[0043] like Figure 3 As shown, at least two lifting mechanisms 3 are installed on each track beam 2, and the bottom of the lifting mechanism 3 has a sliding component that cooperates with the track beam 2. The sliding component can control the lifting mechanism 3 to slide along the track beam 2 and lock and limit its movement. In this invention, the form of the lifting mechanism 3 and the matching sliding component is not limited, as long as it can meet the application function in this scenario. In the embodiment of this invention, the lifting mechanism 3 is a hydraulic jack, and the specific model is not limited. The track beam 2 in the embodiment of this invention can be an H-beam, and the sliding component of the lifting mechanism 3 can be installed on the upper flange of the H-beam. See also Figure 2As shown in the embodiment of the invention, the sliding assembly that cooperates with the track beam 2 at the bottom of the lifting mechanism 3 includes a clamp, a guide wheel, and a locking component. The clamp is installed at the bottom of the lifting mechanism 3 and has an opening. The clamp is fastened to the upper flange of the H-beam of the track beam 2 through the opening, thereby preventing the lifting mechanism 3 from derailing during sliding on the track beam 2. The guide wheel is built into the clamp and located between the track beam 2 and the clamp. The guide wheel can slide on the upper surface of the track beam 2, and the load on the lifting mechanism 3 above the clamp is transmitted to the track beam 2 through the guide wheel. The locking component can restrict the relative movement between the clamp and the track beam 2. The locking component is used to select the sliding or fastening mode according to the construction stage. It can directly restrict the rolling of the guide wheel to indirectly restrict the relative movement between the clamp and the track beam 2, or it can not restrict the rolling of the guide wheel but directly restrict the relative movement between the clamp and the track beam 2. In this embodiment, the latter is used, that is, a bolt is used as the locking component. The bolt can directly pass through the clamp and press against the track beam 2 to limit the relative movement of the two and achieve a locked state. When it is necessary to unlock the state, the bolts are loosened again, and the clamp and track beam 2 can move relative to each other again based on the guide wheel.

[0044] It should be noted that there are at least two lifting mechanisms 3 on each track beam 2. If the planar dimensions of the ribbed floor slab formwork platform are large, more lifting mechanisms 3 can be set.

[0045] Furthermore, the displacement output end of lifting mechanisms such as jacks (3) typically has a small cross-section, making it difficult to stably support the ribbed floor slab formwork platform above. Therefore, see [link to relevant documentation]. Figure 2 As shown, the displacement output end of each lifting mechanism 3 passes through an independent second support component 4. The second support component 4 can be detachably fixed to the poured concrete column 14. Both the displacement output end of the lifting mechanism 3 and the second support component 4 can support the ribbed floor slab formwork platform above according to construction needs. The platform is supported by the lifting mechanism 3 during lifting and by the second support component 4 after lifting. During concrete pouring, the ribbed floor slab formwork platform also needs to be supported by the second support component 4 and auxiliary supports. Similarly, the form of the second support component 4 is not limited. In the embodiments of the present invention, the same tripod as the first support component 1 can be used. However, unlike the first support component 1, although the second support component 4 can also be fixed to the side of the poured concrete column 14 by anchoring, it needs to move with the ribbed floor slab formwork platform. Therefore, its installation method should be a detachable installation that is easy to disassemble. Furthermore, the second support component 4 needs to have an intermediate gap through which the displacement output end of the lifting mechanism 3 can pass, and the lifting mechanism 3 can pass through the intermediate gap of the upper second support component 4 to act on the main beam 5.

[0046] Therefore, the bottom of the entire ribbed floor slab formwork platform is synchronously raised and lowered and horizontally displaced along the track beam 2 by multiple lifting mechanisms 3 in the sliding base. The position during the sliding process can be locked by the sliding components at the bottom of the lifting mechanism 3 to prevent the ribbed floor slab formwork platform from sliding during construction and to ensure construction safety.

[0047] The ribbed floor slab formwork platform in this invention is a construction platform for constructing ribbed floor slabs. See also... Figure 4 and Figure 5 As shown, the ribbed floor slab formwork platform includes main beams 5, secondary beams 6, connecting rods 7, vertical rods 8, main ribs 9, and secondary ribs 10. There are two main beams 5, arranged parallel to each other above the two track beams 2. The bottom of each main beam 5 is supported by the displacement output end of the lifting mechanism 3 and the second support assembly 4 below. H-beams can also be selected for the main beams 5. After the main beams 5 are placed on the second support assembly 4, the two can be bolted together to ensure stability.

[0048] Multiple secondary beams 6 are placed and fixed between two main beams 5. In embodiments of the present invention, the secondary beams 6 can also be H-beams, resting on the main beams 5 and connected by bolts and welding. A secondary rib 10 is horizontally mounted on each secondary beam 6, and the main rib 9 is supported on the secondary beam 6 by multiple vertical rods 8. The vertical rods 8 can also be H-beams. All secondary ribs 10 are spaced apart on the main ribs 9, forming the placement plane of the formwork 11. Therefore, the secondary ribs 10 can be arranged parallel at the required intervals, transmitting the load from the formwork 11 above by resting on the main ribs 9. Furthermore, to ensure the integrity of the entire ribbed floor slab formwork platform, connecting rods 7 can be provided at the connection points between the secondary beams 6 and the vertical rods 8, connecting different secondary beams 6 and vertical rods 8 integrally. Similarly, connecting rods 7 can also be provided at the connection points between the main ribs 9 and the vertical rods 8, connecting different main ribs 9 and vertical rods 8 integrally.

[0049] Furthermore, since the floor plan of factory buildings is generally large, the length of the secondary beams 6 in the ribbed floor slab formwork platform is also large when the spacing between the two rows of concrete columns is too large. To ensure its stress stability, in addition to being supported on the main beams 5 at both ends, adjustable auxiliary supports can be vertically installed at the bottom of the middle of each secondary beam 6. During the pouring of the ribbed floor slab, the auxiliary supports are supported on the ground 15, transferring part of the load on the secondary beams 6 to the ground 15. The purpose of setting the height of the auxiliary supports is that the ribbed floor slab formwork platform often needs to be lowered during translation to avoid interference with the concrete structure already poured above. Therefore, space is needed for the auxiliary supports to be lowered at the avoidance point. Of course, the auxiliary supports can be completely removed to achieve height adjustment, but this requires high-altitude work. Therefore, in the embodiment of the present invention, the auxiliary supports are set as two sections. See also Figure 1As shown, the two-section auxiliary support consists of a fixed support column 12 and an adjustable base 13. The top of the fixed support column 12 is connected to the secondary beam 6, and the bottom is connected to the adjustable base 13. The adjustable base 13 needs to be removed or shortened in height before the ribbed floor slab formwork platform descends from its pouring height to avoid interference. The adjustable base 13 can be implemented using a support column that can be assembled with the fixed support column 12. Preferably, the adjustable base 13 and the fixed support column 12 use various connection methods that facilitate assembly and disassembly, such as threaded connections, snap-fit ​​connections, and mortise and tenon connections. The adjustable height of the adjustable base 13 needs to be designed based on the height difference between the ribbed floor slab formwork platform in the pouring state and the horizontal movement state; the adjustable height should not be less than this height difference.

[0050] In addition, it should be noted that although the track beam 2, main beam 5, secondary beam 6 and vertical rod 8 are all made of H-beams, this is not the only option. Other types of steel can also be used in other embodiments of the present invention.

[0051] like Figure 6 The diagram illustrates the construction status of the horizontal sliding formwork device of the present invention in the construction area of ​​a ribbed floor slab in a continuous equal-span frame structure. As can be seen from the diagram, except for the area occupied by auxiliary supports, the entire horizontal sliding formwork device is suspended in the air, which does not affect normal personnel movement and construction at the bottom of the construction area. Therefore, it can greatly improve construction efficiency and enhance the overall integrity of the construction. Furthermore, this horizontal sliding formwork device does not require any scaffolding, thus reducing the consumption of reusable materials and improving material utilization.

[0052] It should be noted that the formwork 11 laid above the secondary rib 10 in this invention is only the bottom formwork of the plane, but the formwork for the four main beams required for the pouring of the ribbed floor slab needs to be supported and fixed on this formwork 11. The material of the formwork 11 can be selected according to the site conditions, such as formwork, aluminum formwork, or steel formwork. In addition, if there are gaps between the formwork 11 and the main beam formwork erected on site, they can be sealed with sealant.

[0053] It should be noted that the dimensions of the entire ribbed floor slab formwork platform in this invention need to be selected according to the actual site conditions and construction requirements. Generally, the overall formwork for the corresponding range can be installed according to the range of one sliding construction. After completing one construction range, the entire platform can be slid in. See also Figure 7 As shown, in continuous equal-span frame structures, construction is generally carried out span by span. Therefore, the plan dimensions of the ribbed floor slab formwork platform can also be designed according to the interval between adjacent spans and the column spacing. When the span is large, the secondary beams and auxiliary supports should also be optimized according to the actual situation.

[0054] Furthermore, in embodiments of the present invention, based on the above... Figure 1The horizontal sliding formwork device for ribbed floor slabs in continuous equal-span frame structures shown also provides a construction method for ribbed floor slabs in continuous equal-span frame structures. For example... Figure 8 As shown, the core element of this construction method is the use of the lifting mechanism 3 to control the raising and lowering of the ribbed floor slab formwork platform, thus coordinating the entire construction process. The specific steps of this construction method are described in detail below, including steps S1 to S8.

[0055] S1. For the construction area of ​​the ribbed floor slab in the continuous equal span frame structure, concrete columns are pre-cast on both sides of the construction area and cured to form two rows of pre-cast concrete columns 14.

[0056] It should be noted that the specific construction method and design form of the concrete columns need to be determined based on the corresponding factory building design documents and construction organization, which is not the focus of this invention and will not be described in detail here.

[0057] S2. Install the first support component 1 suspended inside each of the cast concrete columns 14, and keep the first support component 1 on each row of cast concrete columns 14 at the same elevation. Erect and fix a continuous track beam 2 on the first support component 1 on each row of cast concrete columns 14.

[0058] It should be noted that the installation height of the first support component 1 needs to be adjusted according to the actual construction site conditions to meet the construction requirements. When the first support component 1 is mounted on a tripod, it can generally be installed on the inside of the poured concrete column 14 by anchoring. The inside refers to the side facing the interior of the factory building.

[0059] S3. Install at least two lifting mechanisms 3 on each track beam 2, adjust the position of the lifting mechanism 3 on the track beam 2 to be located in the first construction sub-area, lock each lifting mechanism 3 on the track beam 2 at the position of a cast concrete column 14, and fix the second support component 4 on the top of the lifting mechanism 3 to the corresponding cast concrete column 14; then pre-assemble the ribbed floor slab formwork platform on the ground, and hoist and fix the ribbed floor slab formwork platform as a whole to the support plane formed by the displacement output ends of all the lifting mechanisms 3 and the second support component 4.

[0060] It should be noted that the first support component 1 and the second support component 4 on each lifting mechanism 3 should be installed on the same pre-cast concrete column 14. The specific assembly method of the ribbed floor slab formwork platform can be adjusted according to the actual situation. After installation, it can be lifted by equipment such as a truck crane. After being lifted onto the sliding component, it needs to be fixed. Only after fixing can it be disconnected from the lifting equipment.

[0061] S4. After the ribbed floor slab formwork platform is hoisted and fixed, the formwork 11 required for construction is laid on the secondary beam 10. Auxiliary supports are installed below the middle of each secondary beam 6 of the ribbed floor slab formwork platform to form a construction platform.

[0062] S5. Adjust the height of the auxiliary support under each secondary beam 6 in the ribbed floor slab formwork platform so that its bottom is supported on the ground 15, forming a support effect on the middle of the secondary beam 6; then support and reinforce the formwork required for the ribbed floor slab pouring above the formwork 11, and then tie the reinforcing bars and pour the concrete.

[0063] It should be noted that the main beam formwork required for the pouring of the ribbed floor slab laid above formwork 11 is erected on-site, and its specific form and process can be adjusted according to actual needs. If there are gaps between formwork 11 and the on-site erected main beam formwork, they can be sealed with sealant to prevent leakage during concrete pouring.

[0064] S6. After the concrete curing of the ribbed floor slab is completed and the beam formwork is removed, adjust the auxiliary supports installed under each secondary beam 6 so that the bottom of the supports is suspended to avoid interfering with the descent of the ribbed floor slab formwork platform; remove the connection between the second support component 4 and the cast-in-place concrete column 14.

[0065] It should be noted that the specific height that the bottom of the auxiliary support needs to be shortened needs to be determined based on the descent height of the ribbed floor slab formwork platform, and there is no restriction on this.

[0066] S7. By controlling the displacement output end of the lifting mechanism 3 to descend, the ribbed floor slab formwork platform is lowered as a whole to the height that allows for translation, thus avoiding interference with other structures during the translation process.

[0067] S8. Release the lock between the lifting mechanism 3 and the track beam 2. Use wire ropes and winches to pull all the lifting mechanisms 3 synchronously along the track beam 2, thereby moving the ribbed floor slab formwork platform to the next construction sub-area. After positioning, resynchronize and control the displacement output end of the lifting mechanism 3 to rise, thereby raising the ribbed floor slab formwork platform as a whole to the required construction height. Then connect and fix the second support component 4 to the corresponding poured concrete column 14, and then carry out construction on the next construction sub-area according to S5.

[0068] When there are other construction sub-areas, the above process is repeated continuously to complete the formwork construction of the ribbed floor slab area by area. After the construction of all areas is completed, the ribbed floor slab formwork platform can be removed from the sliding base as a whole. Then, the lifting mechanism 3, the track beam 2, and the first support component 1 and the second support component 4 installed on the poured concrete column 14 are gradually removed to complete the entire construction process.

[0069] In summary, this invention provides support for the platform by installing a sliding base on the already poured concrete column. After the platform is assembled on the ground, it can be directly hoisted onto the sliding base to complete the formwork work for the ribbed floor slab. Furthermore, after the construction within the corresponding area is completed, the position can be changed through operations such as lowering, sliding, and raising using jacks or other lifting equipment, saving a significant amount of construction time and resulting in good economic benefits.

[0070] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the invention. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, all technical solutions obtained through equivalent substitution or transformation fall within the protection scope of the present invention.

Claims

1. A horizontal sliding formwork device for a continuous equal-span frame structure ribbed floor slab, characterized in that, Includes sliding base and ribbed floor slab formwork platform; The sliding base includes a first support component (1), a track beam (2), a lifting mechanism (3), and a second support component (4); wherein the first support components (1) are arranged in pairs, and each pair of first support components (1) can be installed on the cast-in-place concrete columns (14) on both sides of the construction area, together forming a support structure for installing the track beam (2); the two track beams (2) are respectively erected parallel to each other on the support structure on both sides of the construction area; at least two lifting mechanisms (3) are installed on each track beam (2), and the bottom of the lifting mechanism (3) has a sliding component that cooperates with the track beam (2), and the sliding component can control the lifting mechanism (3) to slide along the track beam (2) and lock and limit its movement; the displacement output end of each lifting mechanism (3) passes through an independent second support component (4), and the second support component (4) can be fixedly installed on the cast-in-place concrete column (14) in a detachable manner, and the displacement output end of the lifting mechanism (3) and the second support component (4) can both support the ribbed floor slab formwork platform above; The bottom of the ribbed floor slab formwork platform is synchronously lifted and displaced along the direction of the track beam (2) by multiple lifting mechanisms (3) in the sliding base; Both the first support component (1) and the second support component (4) are tripods, and the tripods are fixed to the side of the poured concrete column (14) by anchor bolts; The sliding assembly that cooperates with the track beam (2) at the bottom of the lifting mechanism (3) includes a clamp, a guide wheel and a locking component. The clamp is installed at the bottom of the lifting mechanism (3) and is wrapped around the upper flange of the track beam (2) to prevent derailment. The guide wheel is built into the clamp and can slide on the upper surface of the track beam (2). The load on the lifting mechanism (3) above the clamp is transmitted to the track beam (2) through the guide wheel. The locking component can restrict the relative movement between the clamp and the track beam (2).

2. The horizontal sliding formwork device for continuous equal-span frame structure ribbed floor slabs as described in claim 1, characterized in that, The ribbed floor slab formwork platform includes a main beam (5), a secondary beam (6), vertical rods (8), a main rib (9), and a secondary rib (10). There are two main beams (5), which are arranged in parallel above the two track beams (2). The bottom of each main beam (5) is supported on the displacement output end of the lifting mechanism (3) and the second support component (4) below. Multiple secondary beams (6) are placed and fixed between the two main beams (5). A main rib (9) is horizontally erected on each secondary beam (6), and the main rib (9) is supported on the secondary beam (6) by multiple vertical rods (8). All secondary ribs (10) are placed on the main ribs (9) at intervals to form the placement plane of the template (11). The bottom of the middle part of each secondary beam (6) is vertically provided with an adjustable auxiliary support. During the ribbed floor slab pouring process, the auxiliary support is supported on the ground to transfer part of the load on the secondary beam (6) to the ground.

3. The horizontal sliding formwork device for continuous equal-span frame structure ribbed floor slabs as described in claim 2, characterized in that, The auxiliary support is composed of a fixed support column (12) and an adjustable base (13). The top of the fixed support column (12) is connected to the secondary beam (6), and the bottom is connected to the adjustable base (13). The adjustable base (13) needs to be removed or its height shortened before the ribbed floor slab formwork platform is lowered from the pouring height to avoid interference.

4. The horizontal sliding formwork device for continuous equal-span frame structure ribbed floor slabs as described in claim 2, characterized in that, A connecting rod (7) is provided at the connection position between the secondary beam (6) and the vertical rod (8), and the different secondary beams (6) and the vertical rod (8) are connected together by the connecting rod (7).

5. The horizontal sliding formwork device for continuous equal-span frame structure ribbed floor slabs as described in claim 2, characterized in that, A connecting rod (7) is provided at the connection position between the main rib (9) and the vertical rod (8), and the different main ribs (9) and vertical rods (8) are connected together by the connecting rod (7).

6. The horizontal sliding formwork device for continuous equal-span frame structure ribbed floor slabs as described in claim 2, characterized in that, The track beam (2), main beam (5), secondary beam (6), and vertical rod (8) are all made of H-beams.

7. The horizontal sliding formwork device for continuous equal-span frame structure ribbed floor slabs as described in claim 1, characterized in that, The lifting mechanism (3) uses a hydraulic jack.

8. A construction method using the horizontal sliding formwork device for continuous equal-span frame structure ribbed floor slabs as described in any one of claims 2 to 6, characterized in that, include: S1. For the construction area of ​​the ribbed floor slab in the continuous equal span frame structure, concrete columns are poured on both sides of the construction area in advance and cured to form two rows of poured concrete columns (14). S2. Install the first support component (1) suspended on the inner side of each cast concrete column (14), and keep the first support component (1) on each row of cast concrete columns (14) at the same elevation. Erect and fix a continuous track beam (2) on the first support component (1) of each row of cast concrete columns (14). S3. Install at least two lifting mechanisms (3) on each track beam (2), adjust the position of the lifting mechanism (3) on the track beam (2) to be located in the first construction sub-area, lock each lifting mechanism (3) on the track beam (2) at the position of a cast concrete column (14) and fix the second support component (4) on the top of the lifting mechanism (3) on the corresponding cast concrete column (14); then pre-assemble the ribbed floor slab formwork platform on the ground, and hoist and fix the ribbed floor slab formwork platform as a whole onto the support plane formed by the displacement output ends of all lifting mechanisms (3) and the second support component (4); S4. After the ribbed floor slab formwork platform is hoisted and fixed, the formwork required for construction is laid on the secondary beam (10), and auxiliary supports are installed below the middle of each secondary beam (6) of the ribbed floor slab formwork platform to form a construction platform. S5. Adjust the height of the auxiliary support under each secondary beam (6) in the ribbed floor slab formwork platform so that its bottom is supported on the ground, forming a support effect on the middle of the secondary beam (6); Then, the reinforcing bars are tied above the formwork, and then the concrete is poured. S6. After the concrete curing of the ribbed floor slab is completed and the beam formwork is removed, adjust the auxiliary support installed under each secondary beam (6) so that the bottom of the beam is left with a suspended height to avoid interfering with the descent of the ribbed floor slab formwork platform; remove the connection between the second support component (4) and the concrete column (14) where it is located. S7. By controlling the displacement output end of the lifting mechanism (3) to descend, the ribbed floor slab formwork platform is lowered to the height that allows for translation, thus avoiding interference with other structures during the translation process. S8. Release the lock between the lifting mechanism (3) and the track beam (2), push all the lifting mechanisms (3) to move synchronously along the track beam (2), thereby moving the ribbed floor slab formwork platform to the next construction sub-area, and after positioning, resynchronize the control of the displacement output end of the lifting mechanism (3) to rise, thereby raising the ribbed floor slab formwork platform as a whole to the height required for construction, and then connect and fix the second support component (4) to the corresponding poured concrete column (14), and then carry out construction on the next construction sub-area according to S5.

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