Steel structure supporting platform for overhead area of large-crotch plant and construction method

Abstract

The invention relates to a large-crotch plant overhead area steel structure supporting platform and a construction method, the large-crotch plant overhead area steel structure supporting platform comprises a plurality of stand columns vertically arranged on the ground; the number of the main beams is multiple, the multiple main beams are horizontally arranged and arranged in an array, the ends of the main beams are in lap joint with the floors on the two sides respectively, the lower ends of the main beams abut against the upper ends of the stand columns, and the joints of the main beams located on the same straight line are arranged on the same stand column; the secondary beams comprise a plurality of rods, and the multiple secondary beams are perpendicular to the main beam and are in lap joint with the upper portion of the main beam; and the number of the floor bearing plates is multiple, the multiple floor bearing plates are erected above the secondary beams, and the adjacent floor bearing plates abut against each other. The vertical columns are used for supporting the main beams, then the secondary beams and the floor bearing plates are used for erecting, then the steel pipe supporting system is erected on the floor bearing plates for formwork supporting, the vertical columns are used for lifting the lower end of the steel pipe supporting system, and therefore the overall height of the whole steel pipe supporting system is reduced, and erecting of the steel pipe supporting system is more convenient; and meanwhile, the safety is also improved.

Description

Technical Field

[0001] The present application relates to the technical field of formwork support, and in particular to a steel structure support platform for an overhead area of ​​a large-span factory building and a construction method. Background Art

[0002] In a large number of engineering construction projects, we often encounter some large-span and super-high overhead areas on the roof concrete structures, such as in the local process production areas of large factories, atriums of large shopping malls, etc. In order to meet the production process requirements or to meet the lighting, ventilation, personnel flow, etc., some large-span and super-high overhead areas may be designed. The roof concrete structure in this area has the characteristics of large span, super-high structure, large beam section, etc., which brings many difficulties and challenges to the construction of the roof structure.

[0003] Currently, two methods are commonly used for construction. One is to directly use a steel pipe support system with double vertical poles or high-bearing capacity rigid pillars at the bottom. However, as the height increases, the load that the steel pipe support system needs to bear will continue to increase, resulting in a deviation between the theoretical design calculation of the support system and the actual on-site situation, affecting safety.

[0004] Therefore, it is necessary to propose a new technical solution to solve the above problems. Summary of the invention

[0005] In order to reduce the height of the steel pipe support system and improve the safety during the formwork support process, the present application provides a steel structure support platform for the overhead area of ​​a large-span factory building and a construction method.

[0006] This application provides a steel structure support platform and construction method for a large-scale factory overhead area, which adopts the following technical solutions: A steel structure support platform for the overhead area of ​​a large-span factory building, comprising: A column, wherein the column comprises a plurality of columns, and the plurality of columns are vertically arranged on the ground; A crossbeam, wherein the crossbeam is arranged on the columns and along the arrangement direction of the columns; The main beams include a plurality of main beams, which are horizontally arranged and arranged in an array, the ends of the main beams are respectively overlapped on the floors on both sides, the lower ends of the main beams are abutted against the upper ends of the cross beams, and the connection points of the main beams located on the same straight line are arranged on the same column; A secondary beam, the secondary beam comprising a plurality of rods, the plurality of secondary beams being arranged perpendicular to the main beam and overlapped above the main beam; The floor decking plate comprises a plurality of blocks, and the plurality of the floor decking plates are laid on top of the secondary beam, and adjacent floor decking plates are in contact with each other.

[0007] By adopting the above technical solution, the main beam is supported by columns, and then the secondary beam and floor deck are used for erection. Then, a steel pipe support system is erected on the floor deck to support the formwork, and the lower end of the steel pipe support system is lifted by columns, thereby reducing the overall height of the entire steel pipe support system, making the erection of the steel pipe support system more convenient and improving safety.

[0008] Optionally: beam-raising assemblies for leveling the main beam are respectively provided below the ends of the main beam, and the beam-raising assemblies include support seats provided on the floor, and the upper ends of the support seats are used to abut against the lower ends of the main beams.

[0009] By adopting the above technical solution, the ends of the main beam are supported by the beam-mounting assembly. Therefore, when the heights of the floors at both ends of the main beam are different, one end of the main beam is placed on the higher floor and the other end of the main beam is placed on the beam-mounting assembly on the lower floor, so that the main beam can remain level.

[0010] Optionally: a support groove is provided at the upper end of the support seat, and the beam frame assembly also includes a plurality of pads stacked in the support groove and support columns arranged on the pads, the pads have equal thickness, the support columns are passed through the support groove and abut against the inner wall of the support groove, and the upper ends of the support columns are fixed to the lower end of the main beam.

[0011] By adopting the above technical solution, the vertical height of the support column is adjusted by using the pad, so that after the height of two adjacent floors changes, the main beam can still remain horizontal after installation.

[0012] Optionally: a cover plate is installed on the upper end of the support seat, and the support column is passed through the cover plate and slidably cooperates with the cover plate.

[0013] By adopting the above technical solution, the upper end opening of the support groove is closed by using a cover plate, so that debris during the construction process is not easy to enter the support groove, so that the subsequent disassembly is not easily affected.

[0014] Optionally: a limiting groove is provided at the lower end of the cover plate, and the upper end of the support seat is inserted into the limiting groove.

[0015] By adopting the above technical solution, the cover plate can be engaged with the upper end of the support seat by using the limiting groove, thereby increasing the friction between the cover plate and the support seat, making it difficult for the cover plate to detach from the support seat.

[0016] Optionally: a plurality of ejection holes penetrate through the bottom surface of the support groove.

[0017] By adopting the above technical solution, after the pad and the support seat are connected as a whole due to rust caused by long-term use, a rod-shaped object can be inserted into the support groove through the ejection hole, and then the pad is vibrated by knocking the rod-shaped object, so that the pad can be disconnected from the support seat and detached from the support groove.

[0018] Optionally: a plurality of limit holes are opened on the side wall of the support seat, the height difference between adjacent limit holes is equal to the thickness of the pad, limit pins are passed through the limit holes, and a positioning hole is penetrated through the side of the support column, and the limit pin is passed through the positioning hole.

[0019] By adopting the above technical solution, the relative position between the support seat and the support column is limited by a limit pin, so that the relative position between the support column and the support seat is not easy to move, so that the support column can stably support the main beam.

[0020] Optionally, a plurality of diagonal support columns and zippers are circumferentially arranged on the side walls of the columns, and the ends of the diagonal support columns and zippers away from the columns are fixed to the ground.

[0021] By adopting the above technical solution, the upright column is limited by using the diagonal support column and the zipper, so that the upright column can maintain a vertical state.

[0022] A method for constructing a steel structure support platform for a large-scale factory building overhead area, characterized in that it comprises the following steps: S1. Mark the position on the ground and install the anchor bolts. Vertically hoist the column until it is aligned with the anchor bolts and put it in place. Use a level to measure the height of the column and adjust the height of the column by adding or removing gaskets under the column so that the height of the column is the height of a beam from the upper end of the floor. After the adjustment is completed, tighten the anchor bolts, hoist the beam above the column, and set the beam parallel to the arrangement direction of the columns. S2. The main beam is hoisted horizontally onto the column, and the main beam and the column are fixed by bolts. The ends of the main beams close to each other are arranged on the same column, and the main beams abutting each other are fixed by bolts; S3, arrange the diagonal brace column around the column and fix it with bolts, fix the lower end of the diagonal brace column with anchor bolts, fix the zipper to the side wall of the column with bolts, and fix the lower end of the zipper to the ground with anchor bolts; S4. Hoist the secondary beam to the top of the main beam in a horizontal and perpendicular state to the main beam, and fix the secondary beam to the main beam with bolts; S5. Lay the floor decking plates on the secondary beams so that the floor decking plates close to each other are stacked, and fix the floor decking plates and the secondary beams with bolts.

[0023] By adopting the above technical solution, a stable plane is formed by the main beam, secondary beam and floor decking, and then the steel pipe support system is set on the floor decking, which reduces the overall height of the steel pipe support system, thereby making the steel pipe support system safer and more convenient to erect.

[0024] Optional: In S2, before hoisting the main beam, a support seat is installed on a floor with a lower height, and the number of pads is selected according to the height of the support column. If the sum of the height of the pads and the support column is higher than the upper end surface of the column and the height is less than the thickness of the pads, the upper end of the support column is cut to meet the requirement, the cut column is set in the support groove and the limit pin is inserted, and the cover plate is set on the support seat.

[0025] By adopting the above technical solution, the vertical height of the support column is adjusted using a pad, and then the upper end of the support column is cut, so that the height of the support column can adapt to the height of the main beam, so that the main beam can remain horizontal after installation, and the support column can be used multiple times.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. The main beam can be kept at a relatively high height by erecting columns, and then the steel pipe support system is erected on the floor deck, which reduces the height of the steel pipe support system, makes the erection of the light pipe support system more convenient, and also improves safety; 2. Use the beam erection assembly to lift the end of the main beam so that the main beam can remain horizontal even when the heights of the two floors on which the main beam is erected are different. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the structure of an embodiment of the present application; Figure 2 This is a schematic diagram for illustrating the structure of a beam assembly according to an embodiment of the present application; Figure 3 This is a schematic diagram for illustrating the location of the ejection hole according to an embodiment of the present application.

[0028] In the figure, 1, column; 11, main beam; 12, secondary beam; 13, floor deck; 14, diagonal bracing column; 15, zipper; 16, cross beam; 2, beam frame assembly; 21, support seat; 211, support groove; 212, ejection hole; 213, limit hole; 22, pad; 23, support column; 231, positioning hole; 24, cover plate; 241, limit groove; 242, installation groove; 25, limit pin. DETAILED DESCRIPTION

[0029] The present application is further described in detail below in conjunction with the accompanying drawings.

[0030] The present application discloses a steel structure support platform for the overhead area of ​​a large-scale factory building, such as Figure 1 As shown, it includes a plurality of columns 1, a plurality of beams 16 arranged on the columns 1, a main beam 11 arranged on the beams 16, a plurality of secondary beams 12 arranged on the main beams 11, and a plurality of floor decks 13 arranged on the secondary beams 12. The columns 1 are arranged vertically, and the columns 1 are arranged in an array on the ground and fixed to the ground by anchor bolts. When fixing, a gasket is placed under the column 1 so that the upper end of the column 1 is flush with the upper end surface of the floor for erecting the main beam 11, and when the heights of the floors at both ends of the main beam 11 are different, the upper end surface of the column 1 is flush with the upper end surface of the higher floor. The beam 16 is parallel to the arrangement direction of the columns 1 and parallel to the floors on both sides, and the beam 16 is fixed to the column 1 by bolts. The main beam 11 is arranged horizontally. In this embodiment, the main beam 11 is made of a horizontally arranged I-beam. Both ends of the main beam 11 are respectively erected on the floor, and the lower end of the main beam 11 abuts against the upper end of the cross beam 16 and the two are fixed by bolts. When one main beam 11 cannot be erected on the floors at both ends at the same time, multiple main beams 11 are arranged on the same straight line, so that the ends of the main beams 11 located on the same straight line abut against each other and are fixed by bolts, and the ends of the main beams 11 abutting against each other are simultaneously arranged on the same column 1, thereby realizing the erection of the main beam 11. The secondary beam 12 is arranged horizontally and perpendicular to the length direction of the main beam 11. In this embodiment, the secondary beam 12 is made of a horizontally arranged I-beam. The secondary beam 12 is erected above the main beam 11 and is fixed to the main beam 11 by bolts. The floor deck 13 is arranged above the secondary beam 12 parallel to the length direction of the secondary beam 12, and the edges of adjacent floor decks 13 overlap each other and are fixed to the secondary beam 12 by bolts. Afterwards, the formwork support frame is erected above the floor deck 13, and the height at which the formwork support frame needs to be erected is reduced during the erection of the formwork support frame, making the erection of the formwork support frame more convenient and also improving safety.

[0031] Several diagonal braces 14 and zippers 15 are arranged on the circumference of the side wall of the column 1. The upper end of the diagonal brace 14 is fixed to the column 1 by bolts, and the lower end of the diagonal brace 14 is fixed to the ground by anchor bolts. The upper end of the zipper 15 is fixed to the column 1 by bolts, and the lower end of the zipper 15 is fixed to the ground by anchor bolts. The diagonal brace 14 is used to support the column 1, and the zipper 15 is also used to apply tension to the column 1, so that the column 1 remains in a vertical state, thereby stably supporting the main beam 11.

[0032] like Figure 1 and Figure 2As shown, when the main beam 11 is erected, the heights of the floors overlapped at both ends of the main beam 11 may be different. Therefore, a beam erection assembly 2 for supporting the end of the main beam 11 is provided below the end of the main beam 11 located at the floor. The beam erection assembly 2 includes a support seat 21 provided on the floor, a plurality of pads 22 provided in the support seat 21, and support columns 23 provided on the pads 22. The pads 22 have the same thickness. The support seat 21 is fixed to the floor by anchor bolts. A support groove 211 is provided at the upper end of the support seat 21. The support groove 211 is rectangular. The pads 22 are provided at the bottom of the support groove 211. The pads 22 are stacked vertically and keep contact with the inner wall of the support groove 211. The support column 23 is rectangular and inserted into the support groove 211. In this embodiment, the support column 23 uses a vertically arranged I-beam. The lower end of the support column 23 abuts against the uppermost pad 22, and the support column 23 also abuts against the inner wall of the support groove 211. Before the main beam 11 is erected, the beam erection assembly 2 is set on the lower floor, and the height of the upper end of the support column 23 is adjusted by increasing or decreasing the pad 22. When the difference between the height of the upper end of the support column 23 and the height of another floor is less than the thickness of a pad 22, the upper end of the support column 23 is cut so that the upper end of the support column 23 can be kept flush with the upper end of another higher floor, so that the support column 23 can support the lower end of the main beam 11 located above the lower floor.

[0033] Since the support column 23 does not fill the upper end opening of the support groove 211, debris may enter the support groove 211, thereby affecting the disassembly after the construction is completed. Therefore, a cover plate 24 is also provided at the upper end of the support seat 21, and the cover plate 24 can close the upper end opening of the support groove 211. The lower end of the cover plate 24 is provided with a limiting groove 241, and the upper end of the support seat 21 can be inserted into the limiting groove 241, and the inner wall of the limiting groove 241 is kept in contact with the outer wall of the support seat 21. The upper end of the cover plate 24 is penetrated by a mounting groove 242 adapted to the support column 23, and the support column 23 is arranged in the mounting groove 242, and the outer wall of the support column 23 is kept in contact with the inner wall of the mounting groove 242. The upper end opening of the support groove 211 is closed by the cover plate 24, thereby reducing the situation that debris enters the support groove 211, and it is not easily affected by debris when disassembly is completed after the construction, making the later disassembly process more convenient.

[0034] like Figure 3As shown, a large amount of water will be generated during the construction process, and the support column 23, the pad 22 and the support seat 21 will rust after contacting with liquids such as water, causing the pad 22, the support column 23 and the support seat 21 to rust together, affecting disassembly. Therefore, a plurality of ejection holes 212 connected to the support groove 211 are opened at the lower end of the support seat 21, and the ejection holes 212 are arranged at the four corners of the support groove 211 and the middle of the support groove 211. When the pad 22 and the support seat 21 are rusted together during disassembly, a rod-shaped object is inserted into the ejection hole 212 and the rod-shaped object is knocked, so that the pad 22 and the support seat 21 are separated by vibration, and the disassembly of the pad 22 and the support seat 21 is completed.

[0035] like Figure 2 As shown, in order to ensure that the relative position of the support column 23 and the support seat 21 can be stably limited after the support column 23 is set in the support groove 211, a plurality of limiting holes 213 are opened on the side wall of the support seat 21, and the limiting holes 213 are arranged in the vertical direction, and the height difference of adjacent limiting holes 213 is the same as the thickness of the pad 22. The support column 23 is penetrated by a horizontally arranged positioning hole 231, and the axis of the positioning hole 231 can coincide with the axis of one limiting hole 213. A limiting pin 25 is commonly penetrated in the overlapping limiting hole 213 and the positioning hole 231, and the ends of the limiting pin 25 are both arranged outside the support seat 21, so that the relative position of the support column 23 and the support seat 21 is limited by the limiting pin 25, and when it is necessary to push the rusted pad 22 out of the support groove 211, the limiting pin 25 can also be inserted into the ejection hole 212 to apply force to the pad 22.

[0036] The present application also provides a method for constructing a steel structure support platform for a large-scale plant overhead area, comprising the following steps: S1. Mark the position on the ground and install the anchor bolts, vertically hoist the column 1 until it is aligned with the anchor bolts and placed in place, use a level to measure the height of the column 1 and adjust the height of the column 1 by adding or removing gaskets under the column 1, so that the upper end of the column 1 is one beam height away from the upper end of the higher floor, tighten the anchor bolts after the adjustment, hoist the beam 16 above the column 1, and set the beam 16 parallel to the arrangement direction of the column 1; S2. Install the support seat 21 on a floor with a lower height, and select the number of pads 22 according to the height of the support column 23. If the sum of the height of the pads 22 and the support column 23 is higher than the upper end surface of the column 1 and the height is less than the thickness of the pads 22, cut the upper end of the support column 23 to meet the requirement, set the cut column 1 in the support groove 211 and insert the limit pin 25, and cover the cover plate 24 on the support seat 21.

[0037] The main beam 11 is hoisted horizontally onto the column 1, and the main beam 11 is fixed to the column 1 by bolts. The ends of the main beam 11 close to each other are arranged on the same column 1, and the main beams 11 abutting against each other are fixed by bolts; S3, arrange the diagonal brace 14 around the column 1 and fix it with bolts, fix the lower end of the diagonal brace 14 with anchor bolts, fix the zipper 15 to the side wall of the column 1 with bolts, and fix the lower end of the zipper 15 to the ground with anchor bolts; S4, hoisting the secondary beam 12 to the top of the main beam 11 in a horizontal and vertical state relative to the main beam 11, and fixing the secondary beam 12 to the main beam 11 with bolts; S5. Lay the floor decking plates 13 on the secondary beams 12 so that the floor decking plates 13 close to each other are stacked, and fix the floor decking plates 13 and the secondary beams 12 with bolts.

[0038] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A steel structure support platform for the overhead area of ​​a large-scale factory building, characterized by: include: A column (1), wherein the column (1) comprises a plurality of columns, and the plurality of columns (1) are vertically arranged on the ground; A crossbeam (16), wherein the crossbeam (16) is arranged on the upright posts (1) and along the arrangement direction of the upright posts; A main beam (11), wherein the main beam (11) comprises a plurality of main beams (11), the plurality of main beams (11) are horizontally arranged and arranged in an array, the ends of the main beams (11) are respectively overlapped on the floors on both sides, the lower ends of the main beams (11) are abutted against the upper ends of the cross beams, and the connection points of the main beams (11) located on the same straight line are arranged on the same column (1); A secondary beam (12), wherein the secondary beam (12) comprises a plurality of rods, and the plurality of secondary beams (12) are arranged perpendicular to the main beam (11) and overlapped above the main beam (11); The floor decking plate (13) comprises a plurality of blocks. The plurality of floor decking plates (13) are laid on the top of the secondary beam (12), and adjacent floor decking plates (13) are in contact with each other.

2. According to claim 1, a steel structure support platform for the overhead area of ​​a large-space factory building is characterized by: A beam mounting assembly (2) for leveling the main beam (11) is respectively arranged below the ends thereof, and the beam mounting assembly (2) comprises a support seat (21) arranged on the floor, and the upper end of the support seat (21) is used to abut against the lower end of the main beam (11).

3. According to claim 2, a steel structure support platform for the overhead area of ​​a large-space factory building is characterized by: The upper end of the support seat (21) is provided with a support groove (211), and the beam frame assembly (2) further comprises a plurality of pads (22) stacked in the support groove (211) and support columns (23) arranged on the pads (22), the pads (22) having equal thickness, the support columns (23) passing through the support groove (211) and abutting against the inner wall of the support groove (211), and the upper end of the support column (23) is fixed to the lower end of the main beam (11).

4. According to claim 3, a steel structure support platform for the overhead area of ​​a large-space factory building is characterized by: A cover plate (24) is installed on the upper end of the support seat, and the support column (23) is inserted through the cover plate (24) and slidably cooperates with the cover plate (24).

5. According to claim 4, a steel structure support platform for the overhead area of ​​a large-space factory building is characterized by: The lower end of the cover plate (24) is provided with a limiting groove (241), and the upper end of the support seat (21) is inserted into the limiting groove (241).

6. The steel structure support platform for the overhead area of ​​a large-space factory building according to claim 3 is characterized by: A plurality of ejection holes (212) penetrate through the bottom surface of the support groove (211).

7. The steel structure support platform for the overhead area of ​​a large-space factory building according to claim 6 is characterized by: The side wall of the support seat (21) is provided with a plurality of limiting holes (213), the height difference between adjacent limiting holes (213) is equal to the thickness of the pad (22), and limiting pins (25) are inserted into each of the limiting holes (213). A positioning hole (231) is inserted into the side of the support column (23), and the limiting pin (25) is inserted into the positioning hole (231).

8. The steel structure support platform for the overhead area of ​​a large-space factory building according to claim 1 is characterized by: A plurality of diagonal support columns (14) and zippers (15) are arranged on the circumference of the side wall of the column (1); the ends of the diagonal support columns (14) and the zippers (15) away from the column (1) are fixed to the ground.

9. A method for constructing a steel structure support platform for a large-scale factory building overhead area, characterized in that: The steps include: S1. Mark a position on the ground and install anchor bolts. Lift the column (1) vertically until it is aligned with the anchor bolts and in place. Use a level to measure the height of the column (1) and adjust the height of the column (1) by adding or removing gaskets under the column (1) so that the height of the upper end of the column (1) is the height of a beam (16) away from the upper end of the floor. After the adjustment is completed, tighten the anchor bolts and lift the beam (16) above the column (1), and set the beam (16) parallel to the arrangement direction of the columns (1). S2, hoisting the main beam (11) horizontally onto the column (1), fixing the main beam (11) and the column (1) by bolts, and placing the ends of the main beam (11) close to each other on the same column (1) and fixing the main beams (11) abutting against each other by bolts; S3, arrange the diagonal brace column (14) around the column (1) and fix it with bolts, fix the lower end of the diagonal brace column (14) with anchor bolts, fix the zipper (15) to the side wall of the column (1) with bolts, and fix the lower end of the zipper (15) to the ground with anchor bolts; S4, hoisting the secondary beam (12) above the main beam (11) in a horizontal and perpendicular state to the main beam (11), and fixing the secondary beam (12) to the main beam (11) by bolts; S5. Lay the floor decking plates (13) on the secondary beams (12) so that the floor decking plates (13) close to each other are stacked, and fix the floor decking plates (13) and the secondary beams (12) by bolts.

10. The method for constructing a steel structure support platform for a large-space factory building overhead area according to claim 9, characterized in that: In the above S2, before the main beam (11) is hoisted, a support seat (21) is installed on a floor with a relatively low height, and the number of pads (22) is selected according to the height of the support column (23). If the sum of the pads (22) and the support column (23) is higher than the upper end surface of the column (1) and the height is less than the thickness of the pads (22), the upper end of the support column (23) is cut to meet the requirement, the cut column (1) is set in the support groove (211) and the limit pin (25) is inserted, and the cover plate (24) is covered on the support seat (21).

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