Combined support platform for high-altitude cantilever structure construction

Abstract

The application relates to a combined support platform for high-altitude overhanging structure construction, and belongs to the field of building construction. The combined support platform comprises a cantilevered rack, a suspension mechanism and a support mechanism. The cantilevered rack is connected to the edge of a floor higher than the second floor of a building. The suspension mechanism is used to apply a pulling force to the cantilevered rack based on a floor higher than the cantilevered rack. The support mechanism is used to apply a supporting force to the cantilevered rack based on a floor lower than the cantilevered rack. The cantilevered rack serves as a support base and provides a supporting operation platform for a construction support such as a scaffold. The application sets the cantilevered rack at a high position of a building to support a support system for construction operation of cantilevered concrete, thereby reducing the operation difficulty of erecting the support system and increasing the safety of the support system itself.

Description

Technical Field

[0001] This application relates to the field of building construction, and in particular to a combined support platform for the construction of cantilever structures at height. Background Technology

[0002] For the sake of architectural aesthetics, super high-rise buildings will be equipped with high-altitude cantilever structures. The use of beams and slabs as cantilever components is gradually increasing. The beams and slabs are fixedly connected to the edge of the floor slab of the high-rise building by cast-in-place concrete, and the concrete formwork will be suspended and fixed by a formwork support platform set up at high altitude.

[0003] Traditional formwork support is ground-supported scaffolding support. However, when the cantilever structure is too high, the safety and stability of the ground-supported scaffolding support platform will be greatly reduced, and the construction difficulty will increase accordingly. Summary of the Invention

[0004] To address the aforementioned issues, this application provides a modular support platform for the construction of high-altitude cantilever structures.

[0005] This application provides a combined support platform for high-altitude cantilever structure construction, which adopts the following technical solution:

[0006] A combined support platform for high-altitude cantilever structure construction includes a cantilever frame, a suspension mechanism, and a support mechanism. The cantilever frame is connected to the edge of the floor slab above the second floor of the building. The suspension mechanism is used to apply a tensile force to the cantilever frame based on the floor above the cantilever frame. The support mechanism is used to apply a supporting force to the cantilever frame based on the floor below the cantilever frame.

[0007] By adopting the above technical solution, a support structure suspended above the edge of the building is established at a high point. The cantilever platform serves as the support foundation, providing a support platform for construction supports such as scaffolding. The suspension mechanism and the support mechanism work together to provide support for the cantilever platform. In other words, the construction support system does not need to occupy a lot of space, which reduces the difficulty of operation and increases the safety of the support system itself.

[0008] Preferably, the cantilever frame includes several main beams and several connecting beams. The main beams are connected to the floor slab, and the length direction of the main beams is perpendicular to the length direction of the connecting beams. Each connecting beam is simultaneously connected to multiple main beams.

[0009] By adopting the above technical solution, the cantilever platform is composed of several staggered beams.

[0010] Preferably, the floor slab is provided with pre-embedded U-shaped anchor bolts, and a clamping plate is connected to the pre-embedded U-shaped anchor bolts by nuts. The clamping plate and the floor slab respectively abut against the upper and lower sides of the main beam.

[0011] By adopting the above technical solution, the main beam is fixed tightly to the floor slab by the combined action of the pre-embedded U-shaped anchor bolts, nuts and clamping plates.

[0012] Preferably, the suspension mechanism includes a tie rod and a connecting assembly. One end of the tie rod is connected to a shear wall or beam higher than the cantilever platform via the connecting assembly, and the other end is connected to the main beam.

[0013] By adopting the above technical solution, the two ends of the tie rod are connected to the higher floors of the building and the main beam, respectively, so as to transmit the tension to the main beam.

[0014] Preferably, the connecting assembly includes a pre-embedded sleeve, tie bolts, and a connecting plate. The pre-embedded sleeve is located in a shear wall or beam higher than the cantilever platform. The tie bolts pass through both the connecting plate and the pre-embedded sleeve. The connecting plate is connected to one end of the tie rod.

[0015] Preferably, the suspension mechanism further includes an adjusting member, wherein the end of the tie rod away from the connecting assembly is hinged to the main beam, and the adjusting member is used to change the length of the tie rod.

[0016] By adopting the above technical solution, the length of the pull rod needs to be set to be relatively long during assembly in order to facilitate operation. When establishing the tension relationship in the later stage of assembly, the pull rod needs to be shortened to effectively transmit the tension.

[0017] Preferably, the pull rod includes two sub-rods, which are coaxial, and the adjusting member is used to connect the two sub-rods and adjust the relative distance between them.

[0018] Preferably, the support mechanism includes a plurality of support rods, one end of which is fixedly connected to the floor slab of a floor below the cantilever platform, and the other end is connected to the main beam.

[0019] By adopting the above technical solution, the two ends of the support rod apply thrust to the lower floor slab and the main beam respectively, and generate abutment support to the main beam in sequence.

[0020] Preferably, the main beam is provided with an adjustment assembly for adjusting the connection position between the support rod and the main beam. The adjustment assembly includes a first adjustment block, which is located below the main beam and slides relative to the main beam. The sliding direction is consistent with the length direction of the main beam. The end of the support rod near the main beam is located within the angle area formed by the first adjustment block and the main beam.

[0021] Preferably, the support rod is a channel steel, the end of the first adjusting block contacts the bottom of the channel steel, and a second adjusting block is slidably disposed between the main beam and the first adjusting block. The sliding direction of the second adjusting block is consistent with the length direction of the main beam. One end of the second adjusting block is provided with an adjusting wedge surface, which is inclined downward and abuts against the end face of the support rod. An adjusting seat is provided on the main beam, and both the first adjusting block and the second adjusting block are located on the adjusting seat. The adjusting seat is provided with a control component for controlling the movement of the first adjusting block and the second adjusting block.

[0022] By adopting the above technical solution, the first and second adjustment blocks respectively abut against the support rods and move laterally based on the main beam. Their abutment positions against the support rods also change accordingly, thereby improving the stability of the support mechanism and the flatness of the cantilever platform by reducing the initial deflection of the support beam and the initial levelness of the main beam during assembly.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. By setting up a cantilever platform, suspension mechanism and support mechanism, a support structure suspended above the edge of the building is established at a high point. The cantilever platform serves as the support foundation and provides a support platform for construction supports such as scaffolding. The suspension mechanism and support mechanism work together to provide support for the cantilever platform.

[0025] 2. By adjusting the component settings, the first and second adjustment blocks respectively abut against the support rods and move laterally based on the main beam. Their abutment positions against the support rods also change accordingly, thereby improving the stability of the support mechanism and the flatness of the cantilever platform by reducing the initial deflection of the support beam and the initial levelness of the main beam during assembly. Attached Figure Description

[0026] Figure 1 This is a structural plan view of the combined support platform used for high-altitude cantilever structure construction, as shown in Embodiment 1 of this application.

[0027] Figure 2 This is a three-dimensional structural diagram of the combined support platform used for high-altitude cantilever structure construction, as shown in Embodiment 1 of this application.

[0028] Figure 3 yes Figure 1 A magnified view of part A in the middle.

[0029] Figure 4 This is a structural schematic diagram of the connection between the main beam and the support rod in Embodiment 2 of this application.

[0030] Figure 5 This is a schematic diagram illustrating the working principle of the adjustment component in Embodiment 2 of this application.

[0031] Explanation of reference numerals in the attached drawings: 1. Floor slab; 11. Embedded U-shaped anchor bolt; 12. Pressure plate; 2. Cantilever frame; 21. Main beam; 22. Connecting beam; 3. Suspension mechanism; 31. Tie rod; 311. Sub-rod; 32. Adjusting component; 33. Connecting assembly; 331. Embedded sleeve; 332. Tie bolt; 333. Connecting plate; 4. Support mechanism; 41. Steel plate; 42. Support rod; 5. Adjusting assembly; 51. Adjusting seat; 52. Adjusting screw; 53. First adjusting block; 531. Abutting arc surface; 54. Second adjusting block; 541. Adjusting wedge surface. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0033] Example 1:

[0034] This application discloses a combined support platform for high-altitude cantilever structure construction, such as... Figure 1 and 2 As shown, the structure includes a cantilever platform 2, a suspension mechanism 3, and a support mechanism 4. The cantilever platform 2 is located at the edge of the floor slab 1 of a high-rise building, serving as a supporting foundation and providing a support platform for scaffolding and other construction supports required for the cantilevered concrete construction of higher floors. The suspension mechanism 3 applies tension to the cantilever platform 2 from a floor above its location, while the support mechanism 4 applies support force to the cantilever platform 2 from a floor below its location. In this embodiment, the construction of the cantilevered concrete structure needs to be carried out at the edge of the floor slab 1 on the seventh floor, and the cantilever platform 2 is located at the edge of the floor slab 1 on the fifth floor.

[0035] like Figure 1 and 2 As shown, the cantilever frame 2 includes several main beams 21 and several connecting beams 22. Both the main beams 21 and connecting beams 22 are 18# I-beams. All main beams 21 have the same length direction, being horizontal. Each main beam 21 is connected to the floor slab 1, and one end of each main beam 21 extends beyond the floor slab 1. The interval between any two adjacent main beams 21 is 900mm. The floor slab 1 is equipped with pre-embedded U-shaped anchor bolts 11, each connected to a clamping plate 12 via a nut. The main beam 21 is located between the two threads of the pre-embedded U-shaped anchor bolts 11. The clamping plate 12 and the surface of the floor slab 1 abut against the upper and lower sides of the main beam 21, respectively. Steel pads are provided on opposite sides of the I-beams, with the edges of the steel pads contacting the threads of the pre-embedded U-shaped anchor bolts 11 to improve the alignment between the main beam 21 and the pre-embedded U-shaped anchor bolts 11. The length of the connecting beam 22 is also horizontal and perpendicular to the length of the main beam 21. The connecting beam 22 is placed above the main beam 21 and located in the suspended part of the main beam 21. A single connecting beam 22 is simultaneously connected to multiple main beams 21 by bolts.

[0036] like Figure 1 , 2 As shown in Figure 3, the suspension mechanism 3 includes a tie rod 31 and a connecting assembly 33. One end of the tie rod 31 is connected to the shear wall or beam below the sixth floor slab 1 via the connecting assembly 33, and the other end is connected to the main beam 21. The connecting assembly 33 includes a pre-embedded sleeve 331, tie bolts 332, and a connecting plate 333. The pre-embedded sleeve 331 is made of A25 PVC pipe, which is located in the shear wall or beam above the cantilever frame 2 and is provided with tie bolts 332 passing through it. It also passes through the connecting plate 333 and the pre-embedded sleeve 331. The connecting plate 333 abuts against the side wall of the shear wall or beam. The lower part of the connecting plate 333 is integrally formed with a bent portion, and the bent portion has a notch for the end of the tie rod 31 to be inserted. After the upper end of the tie rod 31 is inserted into this notch, the connecting plate 333 is welded to the tie rod 31 along the contour of the notch, thereby fixing the upper end of the tie rod 31.

[0037] like Figure 1 , 2 As shown in Figure 3, the end of the tie rod 31 furthest from the connecting assembly 33 is hinged to the main beam 21. The axial direction of the hinge axis is parallel to the length direction of the connecting beam 22. The suspension mechanism 3 also includes an adjusting member 32 for changing the length of the tie rod 31. Each tie rod 31 consists of two coaxially arranged sub-rods 311. The adjusting member 32 connects the two sub-rods 311 to each other and adjusts the relative distance between them. The two sub-rods 311 are A20 long bolt rods, and their adjacent end sidewalls are threaded. The adjusting member 32 consists of two M50 nuts and three steel rods. The two nuts are coaxial, and each nut is threaded onto one sub-rod 311. The three steel rods are located around the nuts and are welded to both nuts simultaneously. When the adjusting member 32 rotates in a specific direction, the two sub-rods 311 can move closer to or further away from each other, thereby changing the overall length of the tie rod 31.

[0038] like Figure 1 As shown in Figure 2, the support mechanism 4 includes several support rods 42. One end of each support rod 42 is fixedly connected to the fourth floor slab 1, and the other end is fixedly connected to the main beam 21. The support rods 42 are made of 18# channel steel. A steel plate 41 is embedded in the fourth floor slab 1. The steel plate 41 is made of Q235 grade square steel, with its upper part protruding from the floor slab 1. The surface of the steel plate 41 is vertical. The lower end of the support rod 42 abuts against the surface of the steel plate 41 facing the outside of the building, and the upper end abuts against the lower surface of the main beam 21. The connection between the support rod 42, the steel plate 41, and the main beam 21 is all welded. The welding position is located approximately 1000mm from the end of the main beam 21.

[0039] Example 2:

[0040] like Figure 4 and 5As shown, the difference from Embodiment 1 is that, during the construction of the cantilever platform 2, one end of the main beam 21 and one end of the support rod 42 are suspended and have a relative contacting effect. Therefore, in this embodiment, the main beam 21 is equipped with an adjustment assembly 5. The adjustment assembly 5 is used to adjust the connection position between the support rod 42 and the main beam 21, that is, to adjust the initial deflection of the support rod 42 and the main beam 21 by changing the position of the end of the support rod 42. The adjustment assembly 5 includes an adjustment seat 51, which is a square cylindrical shape and sleeved on the main rod. The adjustment seat 51 is connected to the main beam 21 by bolts. A first adjusting block 53 and a second adjusting block 54 are slidably disposed on the adjusting seat 51 below the main beam 21. The second adjusting block 54 is located between the first adjusting block 53 and the main beam 21, and the sliding direction of both is consistent with the length direction of the main beam 21. The adjusting seat 51 is provided with a control component for controlling the movement of the first adjusting block 53 and the second adjusting block 54. The control component is an adjusting screw 52, ​​which is rotatably connected to the adjusting seat 51. The axis of the adjusting screw 52 is parallel to the length direction of the main beam 21. There are two adjusting screws 52, one of which is threadedly connected to the first adjusting block 53 and the other is threadedly connected to the second adjusting block 54. That is, when the adjusting screw 52 is rotated, the first adjusting block 53 or the second adjusting block 54 will move.

[0041] like Figure 4 and 5 As shown, the adjusting screw 52 is located in the part of the adjusting block away from the building. The first adjusting block 53 and the second adjusting block 54 both extend from the side of the adjusting seat 51 facing the building. The upper end of the support rod 42 is located in the angled space formed by the adjusting seat 51 and the main beam 21. The end of the first adjusting block 53 facing the floor slab 1 is provided with an abutting arc surface 531, which abuts against the bottom of the channel of the support rod 42. The end of the second adjusting block 54 facing the floor slab 1 is provided with an adjusting wedge surface 541, which is inclined downward and abuts against the end face of the support rod 42. By controlling the first adjusting block 53 to move towards the support rod 42, the upper end of the support rod 42 can move closer to the building, causing the support rod 42 to deflect upwards. This can, to some extent, offset the initial deflection caused by the weight of the support rod 42. Since the height of the upper end of the support rod 42 also changes at this time, the lateral position of the second adjusting block 54 can be adjusted as needed. The contact point between the adjusting wedge surface 541 and the support rod 42 can produce a vertical change component as the lateral position of the second adjusting block 54 changes. That is, the height of the force application point of the main beam 21 supported by the support mechanism 4 changes, and the suspended part of the main beam 21 also deflects accordingly. This allows adjustment of the deflection and levelness of the main beam 21. After the adjusting assembly 5 adjusts the main beam 21 and the support rod 42 to suitable postures, it performs full welding reinforcement at the contact points of the support rod 42 and the first adjusting block 53, and the second adjusting block 54 and the adjusting seat 51.

[0042] The implementation principle of a combined support platform for high-altitude cantilever structure construction according to an embodiment of this application is as follows:

[0043] First, install each main beam 21 on the floor slab 1. After all the main beams 21 are arranged in the design position, tighten the nuts of the pre-embedded U-shaped anchor bolts 11. Then, install each connecting beam 22 on the main beam 21. Then, assemble the support mechanism 4 and the suspension mechanism 3 in sequence. The entire support platform is then built. Scaffolding for the construction of the seventh floor cantilevered concrete structure can be installed on the cantilever platform 2.

[0044] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A combined support platform for construction of high-rise overhanging structure, characterized in that: The cantilevered platform (2) is connected to the edge of the floor (1) above the second floor of the building, the tensioning mechanism (3) is used to apply tension to the cantilevered platform (2) based on the floor above the cantilevered platform (2), and the supporting mechanism (4) is used to apply support force to the cantilevered platform (2) based on the floor below the cantilevered platform (2); The cantilevered platform (2) comprises a plurality of main beams (21) and a plurality of connecting beams (22), the main beams (21) are connected to the floor (1), the length direction of the main beams (21) is perpendicular to the length direction of the connecting beams (22), and each connecting beam (22) is connected to a plurality of main beams (21). The supporting mechanism (4) comprises a plurality of supporting rods (42), one end of the supporting rod (42) is fixedly connected to the floor (1) below the floor of the cantilevered platform (2), and the other end is connected to the main beam (21). The main beam (21) is provided with an adjusting assembly (5), the adjusting assembly (5) is used to adjust the connecting position between the supporting rod (42) and the main beam (21), the adjusting assembly (5) comprises a first adjusting block (53), the first adjusting block (53) is located below the main beam (21) and slides relative to the main beam (21), the sliding direction is consistent with the length direction of the main beam (21), and the end of the supporting rod (42) close to the main beam (21) is located in the angle region formed by the first adjusting block (53) and the main beam (21). The supporting rod (42) is a channel steel, the end of the first adjusting block (53) is in contact with the groove bottom of the channel steel, a second adjusting block (54) is further slidably arranged between the main beam (21) and the first adjusting block (53), the sliding direction of the second adjusting block (54) is consistent with the length direction of the main beam (21), one end of the second adjusting block (54) is provided with an adjusting wedge surface (541), the adjusting wedge surface (541) is downwardly inclined, and the adjusting wedge surface (541) is in abutment with the end surface of the supporting rod (42). The main beam (21) is provided with an adjusting seat (51), the first adjusting block (53) and the second adjusting block (54) are located on the adjusting seat (51), and the adjusting seat (51) is provided with a control member for controlling the movement of the first adjusting block (53) and the second adjusting block (54).

2. The combined support platform for high-altitude cantilever structure construction according to claim 1, characterized in that: The floor (1) is provided with a pre-buried U-shaped anchor bolt (11), the pre-buried U-shaped anchor bolt (11) is connected with a pressing plate (12) through a nut, and the pressing plate (12) and the floor (1) are in abutment on the upper and lower sides of the main beam (21).

3. The combined support platform for high-flying cantilever structure construction according to claim 1, characterized in that: The tensioning mechanism (3) comprises a tension rod (31) and a connecting assembly (33), one end of the tension rod (31) is connected to the shear wall or beam above the cantilevered platform (2) through the connecting assembly (33), and the other end is connected to the main beam (21).

4. The combined support platform for high-flying cantilever structure construction according to claim 3, characterized in that: The connecting assembly (33) comprises a pre-buried sleeve (331), a pair of pull bolts (332) and a connecting plate (333), the pre-buried sleeve (331) is located in a shear wall or a beam higher than the cantilevered rack (2), the pair of pull bolts (332) passes through the connecting plate (333) and the pre-buried sleeve (331) at the same time, and one end of the connecting plate (333) and the pull rod (31) is connected.

5. The combined support platform for construction of overhanging structure at high altitude according to claim 3, characterized in that: The pull mechanism (3) further comprises an adjusting piece (32), one end of the pull rod (31) away from the connecting assembly (33) is hinged to the main beam (21), and the adjusting piece (32) is used for changing the length of the pull rod (31).

6. The combined support platform for construction of overhanging structure at high altitude according to claim 5, characterized in that: The pull rod (31) comprises two sub-rods (311), the two sub-rods (311) are coaxial, and the adjusting piece (32) is used for connecting the two sub-rods (311) and adjusting the relative distance of the two sub-rods (311).

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