A house building cantilever floor support frame and a construction method thereof

Abstract

The application relates to a house building cantilever floor support frame and a construction method thereof, and relates to the field of house building cantilever concrete structure engineering construction. The support frame comprises a support platform and a pre-embedded part, the pre-embedded part comprises a first corbel and a second corbel, further comprises a support monomer, the support monomer comprises a horizontal rod piece, an adjusting seat, a locking piece and an inclined bracing rod piece, the horizontal rod piece is arranged in parallel to a second direction, one end of the horizontal rod piece is fixedly connected to the first corbel, the adjusting seat is slidingly connected to the horizontal rod piece along the second direction, the locking piece is connected between the adjusting seat and the horizontal rod piece, one end of the inclined bracing rod piece is rotationally connected to the adjusting seat through a first hinged shaft, the other end of the inclined bracing rod piece is rotationally connected to the second corbel through a second hinged shaft, and an included angle between the inclined bracing rod piece and the horizontal rod piece is less than 90 DEG. The application has the effects of convenient installation, replacement of the traditional full-frame construction mode, high formwork support and improvement of construction safety.

Description

Technical Field

[0001] This application relates to the field of construction of cantilevered concrete structures in building construction, and in particular to a cantilever floor support frame for building construction and its construction method. Background Technology

[0002] In the construction of cantilevered concrete structures in building construction, the traditional formwork method is usually full-span scaffolding or high formwork. Nowadays, with the rapid development of the construction industry, high-rise buildings are becoming more and more common. Hotels, commercial and other public buildings are often designed with irregular planes to pursue the facade effect. However, due to functional requirements or structural calculation limitations, the structure will have the problem of being suspended in the concave and convex positions of the plane. Conventional formwork methods are very difficult to implement and bring great safety hazards and construction costs.

[0003] To address a series of construction problems caused by cantilever construction, application document No. 202411380651.8 discloses a prefabricated cantilever component and its construction method. The component includes a main beam, a cantilever component beam on the outside of the main beam, and an installation plate fixedly connected to the outer wall of the main beam. The installation plate has multiple sets of threaded holes on the side away from the main beam, and each threaded hole is threaded with a first bolt. The installation plate is fixed to the bottom of the cantilever component beam at the assembly position by the multiple sets of first bolts.

[0004] Regarding the relevant technologies, when the cantilever length is long and the component width is wide, the weight of the cantilever beam is large, and the traction rope needs to have sufficient height in the vertical direction. When the height of the building structure above the floor to be constructed does not meet the installation height requirements of the traction rope, it is difficult to pull the cantilever beam sufficiently. Therefore, when the installation height of the traction rope in the vertical direction is insufficient, it is an urgent problem to be solved to provide a structure that can improve the stability of the cantilever beam. Summary of the Invention

[0005] In order to provide a structure that can improve the stability of cantilever beams, this application provides a cantilever floor support frame for building construction and its construction method.

[0006] In the first aspect, this application provides a cantilever floor support frame for building construction, which adopts the following technical solution:

[0007] A cantilever floor support frame for building construction, comprising:

[0008] Support platform; and,

[0009] Embedded parts, the embedded parts include:

[0010] The first beef leg; and,

[0011] The second support leg and the first support leg are distributed sequentially in a first direction, and the second support leg is located on the side of the first support leg away from the support platform;

[0012] Also includes:

[0013] The support unit and the support platform are sequentially distributed in a first direction, and the support unit includes:

[0014] A horizontal member is provided, which is arranged parallel to the second direction, and one end of the horizontal member is fixedly connected to the first bracket. The support platform is provided on the horizontal member.

[0015] An adjusting seat, which is slidably connected to the horizontal rod along a second direction;

[0016] A locking element, connected between the adjusting seat and the horizontal rod, for securing the adjusting seat to the horizontal rod; and,

[0017] A diagonal brace is provided, with one end rotatably connected to the adjusting seat via a first hinge shaft and the other end rotatably connected to the second bracket via a second hinge shaft. Both the first and second hinge shafts are parallel to a third direction. An angle of less than 90° is formed between the diagonal brace and the horizontal member.

[0018] By adopting the above technical solution, there is no need to install inclined traction structures such as stay cables above the floor to be constructed, making the support frame suitable for construction environments with different heights and spans. In addition, the adjustment seat can slide freely on the horizontal members and lock in the required position, allowing the angle of the diagonal bracing members to be adjusted according to actual needs, thereby better adapting to different construction environments and load conditions. At the same time, the design of the diagonal bracing members effectively disperses the load force, enhances the load-bearing capacity of the entire system, improves the stability of the cantilever structure, and ensures the safety and reliability of the construction site.

[0019] Optionally, a limiting hole is provided through the adjusting seat along the second direction, and the horizontal rod passes through the limiting hole along the second direction.

[0020] By adopting the above technical solution, the adjusting seat can slide freely along the horizontal member, thereby realizing the position adjustment of the adjusting seat and ensuring the stability and adaptability of the support platform. At the same time, the design of the limiting hole ensures a stable connection between the adjusting seat and the horizontal member, preventing loosening during construction and improving the safety and reliability of the overall structure.

[0021] Optionally, a first locking hole is provided on the horizontal member;

[0022] The adjusting seat is provided with a second locking hole, which is located on the side wall of the adjusting seat and communicates with the limiting hole;

[0023] The locking element passes through the second locking hole and the first locking hole.

[0024] By adopting the above technical solution, the adjusting seat can slide along the horizontal bar and lock in a predetermined position, thereby realizing the adjustment of the height and angle of the support platform, improving the flexibility and applicability of the support frame; when in use, simply insert the locking piece into the first locking hole and the second locking hole to complete the locking operation. This design makes the construction process more convenient, enabling the rapid assembly and positioning of the support frame, ensuring construction efficiency and safety.

[0025] Optionally, in the second direction, there are multiple first locking holes spaced apart.

[0026] By adopting the above technical solution, the spaced distribution of multiple first locking holes in the second direction allows the adjusting seat to be fixed at different positions of the horizontal rod, thereby achieving precise adjustment of the height and position of the support platform; that is, multiple first locking holes are provided in the second direction, allowing for flexible selection of different locking points to ensure that the support platform is stable and reliable in the required position.

[0027] Optionally, multiple support units are distributed at intervals along a third direction.

[0028] By adopting the above technical solution, the spacing of multiple support units in the third direction improves the stability of the entire support frame, ensures uniform stress on the cantilevered part, and avoids safety hazards caused by local overload. At the same time, this layout allows the support platform to obtain effective support at different positions, enhancing the rigidity and deformation resistance of the overall structure.

[0029] Optionally, a connecting rod is also included, wherein the connecting rod is fixedly connected between the diagonal bracing members in two adjacent support units.

[0030] By adopting the above technical solution, the setting of connecting rods enhances the stability between two adjacent support units, prevents structural deformation caused by external loads, and improves the overall rigidity and safety of the entire support frame. Specifically, the connecting rods are fixedly connected between two adjacent diagonal bracing members, effectively transmitting and dispersing the force, avoiding structural damage caused by excessive local stress, thereby ensuring the stability and reliability of the cantilevered components during construction.

[0031] Optionally, the support platform includes:

[0032] A support plate, the support plate being disposed perpendicular to a first direction, and the support plate being located on the side of the first leg away from the second leg; and,

[0033] A transverse support bar is provided, which is parallel to a third direction; in a first direction, the transverse support bar is fixedly connected between the support plate and the horizontal member.

[0034] By adopting the above technical solution, the transverse support bars are set parallel to the third direction and fixedly connected between the support plate and the horizontal members, which further enhances the overall rigidity and deformation resistance of the support platform and ensures the safety and reliability of the construction process.

[0035] Optionally, the support platform further includes:

[0036] In a first direction, the longitudinal support bar is fixedly connected between the transverse support bar and the support plate;

[0037] The longitudinal support bar is arranged parallel to the second direction.

[0038] By adopting the above technical solutions, the stability of the support platform is increased, especially the connection strength between the transverse support bars and the support plate, which makes the entire support platform bear the load more evenly and effectively avoids safety hazards caused by uneven local stress. At the same time, the design of the longitudinal support bars improves the overall rigidity of the support platform and further enhances its resistance to deformation, ensuring safety and reliability during construction.

[0039] Optionally, the transverse support bar and / or the longitudinal support bar are I-beams.

[0040] By adopting the above technical solutions, I-beams have good bending resistance, which can effectively resist deformation caused by construction loads and extend the service life of the support frame.

[0041] Secondly, this application provides a construction method for cantilever floor support frames in building construction, employing the following technical solution:

[0042] A construction method for a cantilever floor support frame in building construction includes the following steps:

[0043] S1: Assemble and embed the first and second brackets and other pre-embedded parts into the preset positions;

[0044] S2: Set up the formwork and pour concrete into the location where the embedded parts are located and cure it;

[0045] S3: Remove the formwork and check whether the quality of the embedded parts and the concrete strength meet the requirements;

[0046] S4: Assemble the supporting unit on the ground;

[0047] S5: Hoist the support unit and install locking components between the adjusting seat and the horizontal bar;

[0048] S6: Install the preloaded I-beam on the support frame, and install the through-hole hydraulic jack between the preloaded I-beam and the fixing point, which is a point fixed to the ground or a certain location on the building; then, perform load testing.

[0049] S61: Check if the jack and oil pump are properly connected and calibrated, and verify that the pressure value calculation is correct; if correct, proceed to the next step.

[0050] S62: Loader;

[0051] Before the formal loading, a preload is performed using the first level of load, and the preload holding time is 20 minutes; the preload is repeated twice, and the formal loading is performed 60 minutes later.

[0052] According to the first level of load, two hydraulic jacks are used to apply symmetrical and uniform load to the support frame; the load holding time is 60 minutes; after the structural displacement reaches relative stability, the next load stage is entered; within the same level of load, if the displacement increment of the measuring point with the largest structural displacement in the last 5 minutes is less than 15% of the displacement increment in the first 5 minutes, the structural displacement is considered to have reached relative stability.

[0053] The second to fourth load levels are applied sequentially, with the load increasing at each level.

[0054] After each load level is applied, deformation is observed and detailed records are kept.

[0055] By adopting the above technical solution, firstly, the first and second brackets are pre-embedded to the pre-set floor during the construction process, ensuring the stability of the support frame foundation; secondly, after the pre-set floor formwork is removed, the quality of the embedded parts and the concrete strength are checked to ensure the safety and reliability of subsequent construction; nextly, the support units are assembled on the ground, avoiding the risks of working at heights and improving work efficiency; finally, the support units are hoisted to the embedded parts and connected to them, achieving rapid positioning and installation, further enhancing the overall stability of the support frame.

[0056] In summary, this application includes at least one of the following beneficial technical effects:

[0057] 1. Through the design of embedded parts and supporting units, effective support for cantilever beams is achieved, solving the problem of poor stability of cantilever beams caused by the height limitation of building structure in traditional technology;

[0058] 2. The adjusting seat in the support unit can slide and lock along the horizontal bar, which makes it easy to flexibly adjust the position of the support platform according to actual construction needs, thus improving the applicability and flexibility of the device;

[0059] 3. The angle design between the diagonal bracing members and the horizontal members gives the entire support frame better mechanical performance and enhances the overall stability of the cantilever section; Attached Figure Description

[0060] Figure 1 This is a schematic diagram of the supporting platform structure in the embodiments of this application;

[0061] Figure 2 This is a schematic diagram of the embedded parts and supporting units in the embodiments of this application;

[0062] Figure 3 yes Figure 2 Enlarged view of section A;

[0063] Figure 4 This is a schematic diagram of the structure of the support platform and the disc buckle frame formwork system in the embodiments of this application;

[0064] Figure 5 This is a schematic diagram of the cylindrical sleeve in an embodiment of this application;

[0065] Figure 6 This is a schematic diagram of the structure of the clamping component and the driving component in the embodiments of this application;

[0066] Figure 7 This is a schematic diagram of the wedge block in an embodiment of this application.

[0067] Explanation of reference numerals in the attached drawings: 1. Embedded part; 11. First bracket; 12. Second bracket; 2. Support unit; 21. Horizontal member; 211. First locking hole; 22. Adjusting seat; 221. Limiting hole; 222. Second locking hole; 23. Locking element; 24. Diagonal brace; 25. Connecting rod; 3. Support platform; 31. Support plate; 311. Insertion hole; 32. Transverse support bar; 33. Longitudinal support bar; 4. Disc buckle frame formwork system; 41. Vertical pole; 5. Cylindrical sleeve; 51. Insertion end; 52. Connecting end; 53. Conical head; 54. Upper guide hole; 55. Lower guide hole; 6. Drive shaft; 7. Rotating disk; 8. Clamping assembly; 81. Wedge block; 811. Wedge surface; 82. Drive rod; 83. Compression spring; 84. Upper clamping rod; 85. Lower clamping rod; 9. Drive assembly; 91. First bevel gear; 92. Second bevel gear; 93. Connecting shaft; 94. Handle; 95. Tightening screw. Detailed Implementation

[0068] The following is in conjunction with the appendix Figure 1-7This application will be described in further detail. For ease of description, this application introduces directional terms such as first direction, second direction, and third direction to form a three-dimensional reference direction. The directional terms used, such as "first direction, second direction, and third direction", can be specifically referred to in the figure, where X represents the first direction X, Y represents the second direction Y, Z represents the third direction Z, and the first direction X, the second direction Y, and the third direction Z are perpendicular to each other.

[0069] This application discloses a cantilever floor support frame for building construction. (Refer to...) Figure 1 and Figure 2 The cantilever floor support frame for building construction includes embedded parts 1, support units 2, and support platforms 3. Support units 2 are installed on the floor slab through embedded parts 1, and support platforms 3 are installed on embedded parts 1.

[0070] Reference Figure 1 and Figure 2 The embedded part 1 includes a first bracket 11 and a second bracket 12. The support platform 3, the first bracket 11 and the second bracket 12 are distributed sequentially in the first direction, and the second bracket 12 is located on the side of the first bracket 11 away from the support platform 3. The first bracket 11 and the second bracket 12 are used to be embedded into the floor slab to facilitate the subsequent installation of the support platform 3.

[0071] Reference Figure 1 , Figure 2 and Figure 3 The support unit 2 and the support platform 3 are distributed sequentially in the first direction. The support unit 2 includes a horizontal rod 21, an adjusting seat 22, a locking member 23, and a diagonal brace 24.

[0072] The horizontal rod 21 is arranged parallel to the second direction. One end of the horizontal rod 21 is fixedly connected to the first bracket 11, and the other end is cantilevered. The adjusting seat 22 is slidably connected to the horizontal rod 21 along the second direction. Specifically, a limiting hole 221 is opened through the adjusting seat 22 along the second direction. The horizontal rod 21 passes through the limiting hole 221 along the second direction so that the adjusting seat 22 can move along the second direction on the horizontal rod 21.

[0073] The locking member 23 is connected between the adjusting seat 22 and the horizontal rod 21 to fix the adjusting seat 22 to the horizontal rod 21. The horizontal rod 21 has a first locking hole 211, which penetrates the horizontal rod 21 in a third direction. In the second direction, multiple first locking holes 211 are distributed at intervals.

[0074] The adjusting seat 22 is provided with a second locking hole 222, which passes through the side wall of the adjusting seat 22 in a third direction and communicates with the limiting hole 221. The locking member 23 passes through the second locking hole 222 and one of the first locking holes 211. In this disclosure, the locking member 23 is a pin. After the locking member 23 passes through the second locking hole 222, it is inserted into the first locking hole 211, so that the adjusting seat 22 and the horizontal rod 21 can be fixed by the locking member 23. After the adjusting seat 22 is slid along the horizontal rod 21 to the preset position, it is only necessary to use the locking member 23 to fix the adjusting seat 22 and the horizontal rod 21.

[0075] One end of the diagonal brace 24 is rotatably connected to the adjusting seat 22 via the first hinge shaft, and the other end is rotatably connected to the second bracket 12 via the second hinge shaft. Both the first and second hinge shafts are parallel to the third direction. An angle of less than 90° is formed between the diagonal brace 24 and the horizontal member 21.

[0076] Reference Figure 4 The supporting unit 2 is used to support the supporting platform 3. In order to support the supporting platform 3 more firmly, multiple supporting units 2 are distributed at intervals in the third direction. A connecting rod 25 is fixedly connected between the diagonal bracing members 24 in two adjacent supporting units 2. Preferably, the connecting rod 25 is a telescopic rod, and the telescopic direction is the length direction of the connecting rod 25. In this disclosure, the connecting rod 25 is set parallel to the third direction, and multiple connecting rods 25 are distributed in sequence along the length direction of the diagonal bracing members 24.

[0077] Reference Figure 4 The support platform 3 includes a support plate 31, transverse support bars 32, and longitudinal support bars 33. The support plate 31 is arranged perpendicular to a first direction. In the first direction, the support plate 31, longitudinal support bars 33, transverse support bars 32, and horizontal members 21 are arranged sequentially from the first bracket 11 to the second bracket 12. Specifically, the transverse support bars 32 are fixedly connected to the horizontal members 21 and are parallel to a third direction. In the second direction, multiple transverse support bars 32 are spaced apart. The longitudinal support bars 33 are fixedly connected to the transverse support bars 32 and are parallel to the second direction. Multiple longitudinal support bars 33 are spaced apart in the third direction. The support plate 31 is fixedly connected to the fixed longitudinal support bars 33. The transverse support bars 32 and / or the longitudinal support bars 33 are I-beams. Preferably, both the transverse support bars 32 and the longitudinal support bars 33 in this disclosure are I-beams.

[0078] Reference Figure 4 In some embodiments of this application, a disc buckle frame support system 4 with multiple uprights 41 is also included. The uprights 41 are arranged parallel to the first direction and are connected to the support plate 31, so that the entire disc buckle frame support system 4 can be installed on the support plate 31.

[0079] Reference Figure 5 , Figure 6 and Figure 7 In order to facilitate the installation of the uprights 41 on the support plate 31, in some embodiments of this application, a connecting device is also included. Each upright 41 is connected to the support plate 31 through a corresponding connecting device. The connecting device includes a cylindrical sleeve 5, a drive shaft 6, a rotating disk 7, and a clamping assembly 8.

[0080] The cylindrical sleeve 5 is parallel to the first direction. One end of the cylindrical sleeve 5 is the insertion end 51, and the other end is the connection end 52. The connection end 52 of the cylindrical sleeve 5 is fixedly connected to the upright 41 through a flange. A conical head 53 is coaxially fixedly connected to the insertion end 51 of the cylindrical sleeve 5. The conical head 53 blocks the insertion end 51 of the cylindrical sleeve 5. The maximum outer diameter of the conical head 53 is equal to the outer diameter of the cylindrical sleeve 5. An insertion hole 311 is provided through the support plate 31 along the first direction. The presence of the conical head 53 facilitates the guidance of the cylindrical sleeve 5 into the insertion hole 311. After the conical head 53 passes through the insertion hole 311, the cylindrical sleeve 5 is fixed to the support plate 31. The outer diameter of the cylindrical sleeve 5 is consistent with the inner diameter of the insertion hole 311 to reduce the shaking of the cylindrical sleeve 5 on the support plate 31.

[0081] The drive shaft 6 is coaxially located inside the cylindrical sleeve 5, and the drive shaft 6 is rotatably connected to the conical head 53 around its own axis. Specifically, a bearing is installed between the drive shaft 6 and the conical head 53 to make the rotation of the drive shaft 6 smoother.

[0082] The rotating disk 7 is coaxially fixed to the outer peripheral wall of the drive shaft 6 so that it rotates coaxially with the drive shaft 6 inside the cylindrical sleeve 5.

[0083] In the first direction, the clamping assembly 8 is located at the end of the rotating disk 7 away from the conical head 53; the connecting device includes a plurality of clamping assemblies 8, which are evenly distributed in the circumferential direction of the virtual circles of the plurality of clamping assemblies 8, and the virtual circles are coaxially arranged with the drive shaft 6; the clamping assembly 8 includes a wedge block 81, a drive rod 82, a compression spring 83, an upper clamping rod 84, and a lower clamping rod 85;

[0084] The wedge block 81 is fixedly connected to the rotating disk 7. The wedge block 81 has a wedge surface 811, which is parallel to the first direction. In the circumferential direction of the virtual circle, the wedge surface 811 is inclined from the outside of the virtual circle to the inside of the virtual circle.

[0085] The drive rod 82 is located inside the cylindrical sleeve 5. The drive rod 82 is parallel to the first direction and can move radially along the virtual circle inside the cylindrical sleeve 5. The drive rod 82 contacts the wedge surface 811. As the wedge block 81 rotates forward with the rotating disk 7, it will push the drive rod 82 to move away from the drive shaft 6.

[0086] One end of the compression spring 83 is fixedly connected to the inner wall of the cylindrical sleeve 5, and the other end is fixedly connected to the drive rod 82;

[0087] Both the upper clamping rod 84 and the lower clamping rod 85 are fixedly connected to the drive rod 82, and their lengths are parallel to the sliding direction of the drive rod 82. The upper clamping rod 84 is located on the side of the lower clamping rod 85 away from the rotating disk 7. The cylindrical sleeve 5 has an upper guide hole 54 and a lower guide hole 55 through its wall. The upper clamping rod 84 passes through the upper guide hole 54 and can move along its own length under the guidance of the wall of the upper guide hole 54. The lower clamping rod 85 passes through the lower guide hole 55 and can move along its own length under the guidance of the wall of the lower guide hole 55.

[0088] Since the upper clamping rod 84 and the lower clamping rod 85 are both fixedly connected to the drive rod 82, the drive rod 82, the upper clamping rod 84 and the lower clamping rod 85 can slide synchronously along the cylindrical sleeve 5 so that the clamping assembly 8 can be adjusted between the clamping posture and the storage posture.

[0089] When the clamping assembly 8 is in the retracted position, the compression spring 83 is in the normal state, the end of the upper clamping rod 84 away from the drive rod 82 passes through the upper guide hole 54 and extends to the outside of the cylindrical sleeve 5, and the end of the lower clamping rod 85 away from the drive rod 82 is located in the lower guide hole 55.

[0090] During the adjustment of the clamping assembly 8 from the storage posture to the clamping posture, simply driving the drive rod 82 to move away from the drive shaft 6 will push the upper clamping rod 84 and the lower clamping rod 85 to move synchronously, so that the end of the lower clamping rod 85 passes through the lower guide hole 55. The upper clamping rod 84 and the lower clamping rod 85 can then clamp the support plate 31 to prevent the cylindrical sleeve 5 from sliding along the first direction. During this process, the deformation of the compression spring 83 increases and stores the force that pushes the drive rod 82 toward the drive shaft 6. As the wedge block 81 rotates in the opposite direction with the rotating disk 7, the compression spring 83 will push the drive rod 82 to move toward the drive shaft 6 so that the drive rod 82 is always in contact with the wedge surface 811. In use, simply pass the cylindrical sleeve 5 through the insertion hole 311, attach the upper clamping rod 84 to the support plate 31, and then rotate the lower clamping rod 85 outward until the support plate 31 is clamped between the upper clamping rod 84 and the lower clamping rod 85.

[0091] Reference Figure 6 In order to drive the drive shaft 6 to rotate, in some embodiments of this application, a drive assembly 9 is also included. Each drive shaft 6 is connected to a corresponding drive assembly 9. In the first direction, the drive assembly 9 is located on the side of the upper clamping rod 84 away from the rotating disk 7. The drive assembly 9 includes a first bevel gear 91, a second bevel gear 92, a connecting shaft 93, a handle 94, and a clamping screw 95.

[0092] The first bevel gear 91 and the second bevel gear 92 are both located inside the cylindrical sleeve 5. The first bevel gear 91 is coaxially fixedly connected to the drive shaft 6. The central axis of the second bevel gear 92 is perpendicular to the first direction, and the second bevel gear 92 meshes with the first bevel gear 91. One end of the connecting shaft 93 is coaxially fixedly connected to the second bevel gear 92, and the other end extends through the cylindrical wall of the cylindrical sleeve 5 to the outside of the cylindrical sleeve 5. The connecting shaft 93 is rotatably connected to the cylindrical sleeve 5 through a bearing.

[0093] The handle 94 is located outside the cylindrical sleeve 5 and is fixedly connected to the connecting shaft 93; the clamping screw 95 passes through the handle 94 and is threadedly connected to the handle 94. After passing through the handle 94, the clamping screw 95 abuts against the cylindrical sleeve 5 so as to fix the handle 94 to the cylindrical sleeve 5.

[0094] When driving, simply unlock the tightening screw 95 and turn the handle 94. The handle 94 will drive the drive shaft 6 to rotate through the first bevel gear 91 and the second bevel gear 92. The drive shaft 6 will drive the wedge block 81 to rotate, thereby pushing the clamping assembly 8 to move and clamp the support plate 31.

[0095] This application discloses a construction method for a cantilever floor support frame for building construction, which uses the aforementioned cantilever floor support frame and includes the following steps:

[0096] S1: Assemble and embed the first bracket 11, the second bracket 12, and other pre-embedded parts 1 into the preset positions;

[0097] S2: Set up the formwork and pour concrete at the location where the embedded part 1 is embedded and cure it;

[0098] S3: Remove the formwork and check whether the quality of the embedded part 1 and the concrete strength meet the requirements;

[0099] S4: Assemble support unit 2 on the ground;

[0100] S5: Hoist the support unit 2 and install the locking element 23 between the adjusting seat 22 and the horizontal bar 21;

[0101] S6: Install the preloaded I-beam on the support frame, and install the through-hole hydraulic jack between the preloaded I-beam and the fixing point, which is a point fixed to the ground or a certain location on the building; then, perform load testing.

[0102] S61: Check if the jack and oil pump are properly connected and calibrated, and verify that the pressure value calculation is correct; if correct, proceed to the next step.

[0103] S62: Loader;

[0104] Before the formal loading, a preload is performed using the first level of load, and the preload holding time is 20 minutes; the preload is repeated twice, and the formal loading is performed 60 minutes later.

[0105] According to the first level of load, two hydraulic jacks are used to apply symmetrical and uniform load to the support frame; the load holding time is 60 minutes; after the structural displacement reaches relative stability, the next load stage is entered; within the same level of load, if the displacement increment of the measuring point with the largest structural displacement in the last 5 minutes is less than 15% of the displacement increment in the first 5 minutes, the structural displacement is considered to have reached relative stability.

[0106] The second to fourth load levels are applied sequentially, with the load increasing at each level.

[0107] After each load level is applied, deformation is observed and detailed records are kept.

[0108] 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 cantilever floor support frame for building construction, characterized in that, include: Support platform (3); An embedded part (1) includes a first bracket (11) and a second bracket (12), the second bracket (12) and the first bracket (11) are distributed sequentially in a first direction, and the second bracket (12) is located on the side of the first bracket (11) away from the support platform (3); A support unit (2) and a support platform (3) are distributed sequentially in a first direction. The support unit (2) includes a horizontal rod (21), an adjusting seat (22), a locking member (23), and a diagonal brace (24). The horizontal rod (21) is arranged parallel to a second direction, and one end of the horizontal rod (21) is fixedly connected to the first bracket (11). The support platform (3) is located on the horizontal rod (21). The adjusting seat (22) is slidably connected to the horizontal rod (21) along the second direction; The locking member (23) is connected between the adjusting seat (22) and the horizontal rod (21) to fix the adjusting seat (22) and the horizontal rod (21); One end of the diagonal brace (24) is rotatably connected to the adjusting seat (22) via a first hinge shaft, and the other end is rotatably connected to the second bracket (12) via a second hinge shaft. Both the first hinge shaft and the second hinge shaft are parallel to a third direction. An angle of less than 90° is formed between the diagonal brace (24) and the horizontal member (21). The support platform (3) includes a support plate (31), which is arranged perpendicular to the first direction and is located on the side of the first cow leg (11) away from the second cow leg (12). The support platform (3) further includes a transverse support bar (32), which is arranged parallel to a third direction; in the first direction, the transverse support bar (32) is fixedly connected between the support plate (31) and the horizontal bar (21); The connecting device and the disc buckle frame support system (4) with multiple uprights (41) are arranged parallel to the first direction and the uprights (41) are connected to the support plate (31); Each upright (41) is connected to the support plate (31) via a connecting device; the connecting device includes a cylindrical sleeve (5), a drive shaft (6), a rotating disk (7), and a clamping assembly (8); The cylindrical sleeve (5) is parallel to the first direction. One end of the cylindrical sleeve (5) is the insertion end (51), and the other end is the connection end (52). The connection end (52) of the cylindrical sleeve (5) is fixedly connected to the upright (41) through a flange. A conical head (53) is coaxially fixedly connected to the insertion end (51) of the cylindrical sleeve (5). The conical head (53) seals the insertion end (51) of the cylindrical sleeve (5). The maximum outer diameter of the conical head (53) is equal to the outer diameter of the cylindrical sleeve (5). An insertion hole (311) is provided through the support plate (31) along the first direction. The drive shaft (6) is coaxially located inside the cylindrical sleeve (5), and the drive shaft (6) is rotatably connected to the conical head (53) around its own axis; The rotating disk (7) is coaxially and fixedly connected to the outer peripheral wall of the drive shaft (6); In the first direction, the clamping assembly (8) is located at the end of the rotating disk (7) away from the conical head (53); the connecting device includes a plurality of clamping assemblies (8), which are evenly distributed in the circumferential direction of the virtual circle, and the virtual circle is coaxially arranged with the drive shaft (6); the clamping assembly (8) includes a wedge block (81), a drive rod (82), a compression spring (83), an upper clamping rod (84), and a lower clamping rod (85); The wedge block (81) is fixedly connected to the rotating disk (7). The wedge block (81) has a wedge surface (811) which is parallel to the first direction. In the circumferential direction of the virtual circle, the wedge surface (811) is inclined from the outside of the virtual circle to the inside of the virtual circle. The drive rod (82) is located inside the cylindrical sleeve (5), the drive rod (82) is arranged parallel to the first direction, and the drive rod (82) can move radially along the virtual circle inside the cylindrical sleeve (5), and the drive rod (82) contacts the wedge surface (811); One end of the compression spring (83) is fixedly connected to the inner wall of the cylindrical sleeve (5), and the other end is fixedly connected to the drive rod (82); The upper clamping rod (84) and the lower clamping rod (85) are both fixedly connected to the drive rod (82), and their lengths are parallel to the sliding direction of the drive rod (82). The upper clamping rod (84) is located on the side of the lower clamping rod (85) away from the rotating disk (7). The cylindrical sleeve (5) has an upper guide hole (54) and a lower guide hole (55) through it. The upper clamping rod (84) passes through the upper guide hole (54) and can move along its own length under the guidance of the wall of the upper guide hole (54). The lower clamping rod (85) passes through the lower guide hole (55) and can move along its own length under the guidance of the wall of the lower guide hole (55). The drive rod (82), the upper clamping rod (84) and the lower clamping rod (85) can slide synchronously along the cylindrical sleeve (5) so that the clamping assembly (8) can be adjusted between the clamping posture and the storage posture; When the clamping assembly (8) is in the retracted position, the compression spring (83) is in the normal state, the end of the upper clamping rod (84) away from the drive rod (82) passes through the upper guide hole (54) and extends to the outside of the cylindrical sleeve (5), and the end of the lower clamping rod (85) away from the drive rod (82) is located in the lower guide hole (55); Drive the drive rod (82) to move toward the side away from the drive shaft (6), push the upper clamping rod (84) and the lower clamping rod (85) to move synchronously, so that the end of the lower clamping rod (85) passes through the lower guide hole (55), and the support plate (31) is clamped by the upper clamping rod (84) and the lower clamping rod (85).

2. The cantilever floor support frame for building construction according to claim 1, characterized in that, The adjusting seat (22) has a limiting hole (221) through it along the second direction, and the horizontal rod (21) passes through the limiting hole (221) along the second direction.

3. A cantilever floor support frame for building construction according to claim 2, characterized in that, The horizontal rod (21) is provided with a first locking hole (211); The adjusting seat (22) is provided with a second locking hole (222), which is located on the side wall of the adjusting seat (22) and communicates with the limiting hole (221); The locking member (23) passes through the second locking hole (222) and the first locking hole (211).

4. A cantilever floor support frame for building construction according to claim 3, characterized in that, In the second direction, there are multiple first locking holes (211) spaced apart.

5. A cantilever floor support frame for building construction according to claim 4, characterized in that, Along a third direction, multiple support units (2) are distributed at intervals.

6. A cantilever floor support frame for building construction according to claim 5, characterized in that, It also includes a connecting rod (25), which is fixedly connected between the diagonal bracing members (24) in two adjacent support units (2).

7. A cantilever floor support frame for building construction according to claim 6, characterized in that, The support platform (3) further includes a longitudinal support bar (33), which is fixedly connected between the transverse support bar (32) and the support plate (31) in a first direction; The longitudinal support bar (33) is arranged parallel to the second direction.

8. A cantilever floor support frame for building construction according to claim 7, characterized in that, The transverse support bar (32) and / or the longitudinal support bar (33) are I-beams.

9. A construction method for a cantilever floor support frame in building construction, characterized in that, The construction of a cantilever floor support frame for building construction according to any one of claims 1-8 includes the following steps: S1: Assemble the first bracket (11) and the second bracket (12) and embed them in the preset positions; S2: Set up the formwork and pour concrete at the location where the embedded part (1) is embedded and cure it; S3: Demolding and inspecting the embedded parts (1) whether the quality of the embedded parts and the concrete strength meet the requirements; S4: Assemble the supporting unit on the ground (2); S5: Hoist the support unit (2) and install the locking element (23) between the adjusting seat (22) and the horizontal bar (21); S6: Install the preloaded I-beam on the support frame, and install the through-hole hydraulic jack between the preloaded I-beam and the fixing point, which is a point fixed to the ground or a certain location on the building; then, perform load testing. S61: Check if the jack and oil pump are properly connected and calibrated, and verify that the pressure value calculation is correct; if correct, proceed to the next step. S62: Loader; Before the formal loading, a preload is performed using the first level of load, and the preload holding time is 20 minutes. Preloading is repeated twice, and the actual loading begins after 60 minutes. According to the first level of load, two hydraulic jacks are used to apply symmetrical and uniform load to the support frame; the load holding time is 60 minutes; after the structural displacement reaches relative stability, the next load stage is entered; within the same level of load, if the displacement increment of the measuring point with the largest structural displacement in the last 5 minutes is less than 15% of the displacement increment in the first 5 minutes, the structural displacement is considered to have reached relative stability. The second to fourth load levels are applied sequentially, with the load increasing at each level. After each load level is applied, deformation is observed and detailed records are kept.

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