Construction method for installing a large-angle special-position hanging basket

Abstract

This invention relates to the field of suspended platform installation technology, specifically a method for installing a suspended platform in a special corner of a building. The method includes a structural floor slab and an extended balcony. The extended balcony is located on the outer wall of the structural floor slab, and its outer wall is clad in a stone curtain wall. A parapet wall is fixedly connected to the top outer wall of the structural floor slab. Pre-reserved openings are provided on both sides of the bottom outer wall of the parapet wall. I-beams are inserted into the inner walls of these pre-reserved openings. Square tubes are fixedly connected to both sides of the outer walls of the I-beams. A front support leg is fixedly connected to the top outer wall of the square tube on one side of the I-beam. This invention can be implemented and promoted in building construction projects such as curtain wall and wall construction. It has high commercialization value and solves the problems of traditional methods being time-consuming, labor-intensive, and difficult to guarantee in terms of quality, safety, cost, and construction period. Its application in the fields of building construction and curtain wall engineering is of great significance.

Description

Technical Field

[0001] This invention relates to the field of suspended platform installation technology, and in particular to a method for installing a suspended platform at a special location at the corner of a building. Background Technology

[0002] Since the beginning of the 21st century, suspended platforms for high-altitude operations have entered a period of rapid development, with new products emerging one after another. These new products have improved in terms of ease of operation and reliability, and are continuously evolving towards lightweight design, standardized safety devices, and automated control systems. As the quality and technological content of suspended platform products increase, the factors restricting high-altitude operations are shifting towards the platform's support method. Currently, the maximum extension length of the forelimb of commonly used standard suspended platforms such as ZLP500, ZLP630, and ZLP800 is 1.7m. If it is necessary to lengthen the front beam and perform anti-overturning calculations, the measures often taken are to increase the counterweight and the length of the rear beam. However, these measures have a relatively weak effect on increasing the extension length of the front beam. According to calculations, by adopting the above measures, the maximum extension length of the standard front beam can be increased to 2.3m.

[0003] However, in current public building designs, balconies are often designed for lower and mid-rise floors, but omitted for higher floors or rooftops. This necessitates considering the balcony width when determining the extension length of the suspended scaffold's forelimb during curtain wall and wall construction, especially at special locations such as building corners where the forelimb length frequently exceeds 2.3 meters. There are two traditional methods for addressing curtain wall construction at corners: one involves erecting ground-supported scaffolding on the uppermost extended balcony, building a platform on the scaffolding, and then supporting the front outriggers of the suspended scaffold on the platform; the second method uses a crane to suspend the platform for curtain wall construction. These traditional methods are time-consuming and labor-intensive, and safety, quality, cost, and construction schedule are all difficult to guarantee. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention proposes a method for installing suspended platforms at special corner locations of buildings. This method is time-saving, labor-saving, low-cost, flexible in setup, highly operable, and ensures construction safety, quality, and schedule. It can be implemented and promoted in building construction projects such as curtain walls and wall construction, and has high commercialization value.

[0005] The technical solution to achieve the purpose of this invention is as follows: a construction method for installing a suspended platform in a special corner of a building, including a structural floor slab and an extended balcony. The extended balcony is set on the outer wall of the structural floor slab, and the outer wall of the extended balcony is provided with a stone curtain wall. A parapet wall is fixedly connected to the top outer wall of the structural floor slab. A reserved opening is opened on both sides of the bottom outer wall of the parapet wall. An I-beam is inserted into the inner wall of each reserved opening. Square tubes are fixedly connected to both sides of the outer wall of the I-beam. A front support leg is fixedly connected to the top outer wall of the square tube on one side of the I-beam. A suspension platform is installed on the top outer wall of the front support leg. A suspension rope is provided on one side of the bottom outer wall of the suspension platform. The suspended platform body is fixedly connected to the bottom outer wall of the suspension rope. Anchor rings are provided on the other side of the outer wall of the square tube.

[0006] In some embodiments, a rated load is provided on the outer wall of the other side of the bottom end of the suspended platform. The rated load is connected to the structural floor slab. Bolt holes are provided on the outer wall of the top end of the anchor ring. Expansion bolts are threadedly connected to the inner wall of the bolt holes.

[0007] In some embodiments, a first reinforcing plate is provided on one inner wall of the parapet wall, a second reinforcing plate is provided on one inner wall of the parapet wall, a connecting protrusion is provided on one outer wall of the first reinforcing plate, and a connecting groove is provided on one outer wall of the second reinforcing plate, wherein the size of the connecting protrusion and the connecting groove are adapted to each other.

[0008] In some embodiments, the top outer walls of both the first and second reinforcing plates are fixedly connected to support plates, and the outer walls of the support plates are slidably connected to buckles. The buckles are adapted to the size of the parapet wall, and the other outer walls of the buckles and support plates are provided with positioning holes.

[0009] In some embodiments, a triangular plate is fixedly connected to the other outer wall of both the first reinforcing plate and the second reinforcing plate. The other outer wall of the bottom of the triangular plate is provided with a mounting hole, and the triangular plate is adapted to the size of the square tube.

[0010] In some embodiments, both the bottom outer walls of the first and second reinforcing plates are provided with reserved openings, which are adapted to the dimensions of the first reserved opening and the I-beam, and the dimensions of the first and second reinforcing plates are adapted to the dimensions of the parapet wall.

[0011] In some embodiments, the outer wall of the other side of the bottom of the square tube is provided with round steel, the outer wall of the top of the round steel is provided with a fixing steel plate, and the outer wall of the top of the round steel is connected with a nut by thread.

[0012] The significant advantages of this invention compared to existing technologies are:

[0013] Using I-beams as the main load-bearing components, and fixing them to the structural floor slab in a manner similar to cantilever scaffolding beams, the front outriggers of the suspended platform are placed on the I-beam platform extending from the parapet wall. This increases the outward extension length of the front beam of the suspended platform. Simultaneously, an optimized combination of the I-beam outrigger platform and the extension of the suspended platform's forearm achieves the best effect in increasing the outward extension length. This method is time-saving, labor-saving, low-cost, flexible in setup, and highly operable. Construction safety, quality, and schedule are all guaranteed. It can be implemented and promoted in building construction projects such as curtain walls and wall construction. The results have high commercialization value, solving the problems of traditional methods being time-consuming, labor-intensive, and difficult to guarantee in terms of quality, safety, cost, and schedule. Its scientific significance for promotion in building construction, curtain wall engineering, and other construction fields is substantial. Attached Figure Description

[0014] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0015] Figure 1 This is a positioning diagram of an I-beam platform suspended basket provided in one embodiment of the present invention;

[0016] Figure 2 This is a cross-sectional view of an I-beam platform suspended basket provided in one embodiment of the present invention;

[0017] Figure 3 This is a schematic diagram of the reinforcement structure provided in one embodiment of the present invention;

[0018] Figure 4 This is a schematic diagram of the structure of reinforcing plate one and reinforcing plate two provided in one embodiment of the present invention;

[0019] Figure 5 This is a detailed drawing of the end anchor ring of the cantilevered I-beam provided in one embodiment of the present invention.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Extended balcony; 2. Parapet wall; 3. Suspended platform body; 4. Reinforcement plate one; 5. I-beam; 6. Front support leg; 7. Suspended platform; 8. Reserved opening one; 9. Anchor ring; 10. Structural floor slab; 11. Rated load; 12. Triangular plate; 13. Buckle plate; 14. Suspension rope; 15. Stone curtain wall; 16. Reinforcement plate two; 17. Reserved opening two; 18. Mounting hole; 19. Support plate; 20. Positioning hole; 21. Connecting protrusion; 22. Connecting groove; 23. Nut; 24. Fixing steel plate; 25. Square tube. Detailed Implementation

[0022] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] This invention provides an improved method for installing suspended platforms at special locations such as building corners. The technical solution of this invention is as follows: Figures 1-5 As shown, the structure includes a structural floor slab 10 and an extended balcony 1. The extended balcony 1 is located on the outer wall of the structural floor slab 10. The outer wall of the extended balcony 1 is provided with a stone curtain wall 15. The top outer wall of the structural floor slab 10 is fixedly connected to a parapet wall 2. The two outer walls at the bottom of the parapet wall 2 are provided with reserved openings 8. I-beams 5 are inserted into the inner walls of the reserved openings 8. Square tubes 25 are fixedly connected to the outer walls on both sides of the I-beams 5. A front support leg 6 is fixedly connected to the top outer wall of the square tube 25 on one side of the outer wall of the I-beams 5. A suspended platform 7 is installed on the top outer wall of the front support leg 6. A suspension rope 14 is provided on one side outer wall at the bottom of the suspended platform 7. A suspended basket body 3 is fixedly connected to the bottom outer wall of the suspension rope 14. Anchor rings 9 are provided on the other side outer wall of the square tube 25.

[0024] Furthermore, a rated load 11 is provided on the outer wall of the other side of the bottom end of the suspended platform 7. The rated load 11 is connected to the structural floor slab 10. Bolt holes are provided on the outer wall of the top of the anchor ring 9. Expansion bolts are threadedly connected to the inner wall of the bolt holes. A first reinforcing plate 4 is provided on one side of the inner wall of the parapet wall 2. A second reinforcing plate 16 is provided on one side of the inner wall of the parapet wall 2. A connecting protrusion 21 is provided on one side of the outer wall of the first reinforcing plate 4. A connecting groove 22 is provided on one side of the outer wall of the second reinforcing plate 16. The dimensions of the connecting protrusion 21 and the connecting groove 22 are matched.

[0025] Furthermore, support plates 19 are fixedly connected to the top outer walls of both reinforcing plate 14 and reinforcing plate 2 16. Clip plates 13 are slidably connected to the outer walls of both support plates 19, and the clip plates 13 are adapted to the dimensions of the parapet wall 2. Positioning holes 20 are provided on the other outer walls of both clip plates 13 and support plates 19. Triangular plates 12 are fixedly connected to the other outer walls of both reinforcing plate 14 and reinforcing plate 2 16. Mounting holes 18 are provided on the other outer wall of the bottom of the triangular plates 12. All 12 are adapted to the size of the square tube 25. The bottom outer wall of the first reinforcing plate 4 and the second reinforcing plate 16 are provided with reserved openings 2 17. The reserved openings 2 17 are adapted to the size of the reserved opening 8 and the I-beam 5. The first reinforcing plate 4 and the second reinforcing plate 16 are adapted to the size of the parapet wall 2. The other side outer wall of the bottom of the square tube 25 is provided with round steel. The top outer wall of the round steel is provided with a fixing steel plate 24. The top outer wall of the round steel is connected with a nut 23 by thread.

[0026] The specific working method is as follows: determine the positional relationship of the suspended platform body 3 in special parts, calculate the required H-beam 5 type, H-beam 5 length, suspended platform 7 length, and anchorage section length. The H-beam 5 type is selected based on the calculation. The length of the suspended platform 7 is obtained based on the calculation and on-site measurement. When calculating, it is necessary to comprehensively consider the outline of the lower extended balcony 1, the outline of the stone curtain wall 15, and the working surface of the suspended platform body 3. The length of the anchorage section must meet the requirement of the suspended platform 7 and the anchorage section ≥ 1:1.25, and leave an appropriate margin. The length of the H-beam 5 is the sum of the length of the suspended platform 7 and the length of the anchorage section.

[0027] When designing the I-beam 5 model and calculating the stability of the I-beam 5 platform, the steel continuous beam model can be used as a reference. The steel continuous beam has two spans. The first span is from the rear anchor point to the support point at the edge of the parapet wall 2, and the second span is from the support point at the edge of the parapet wall 2 to the support point at the front outrigger 6 of the suspended platform. The left support is simply supported, and the right support is free. Calculate the upper bending moment, lower bending moment, shear force, and maximum stress of each span of the two-span beam. Select a bending and shear allowable safety factor of 1.1, and calculate the bending strength and shear strength of the steel continuous beam to determine whether the design is safe.

[0028] Before constructing the parapet wall, lay out the drawings to determine the position of the I-beams exiting the parapet wall. When pouring the parapet wall 2, pre-set a reserved opening 8 at this position. The size of the reserved opening 8 is controlled according to the model of the I-beam 5 and the angle of its exit. When encountering structural steel bars, the steel bars should be bent and pass along the edge of the reserved opening 8 without cutting them. The opening of the I-beam 5 through the parapet wall 2 should be wedged tightly with wooden wedges and nailed firmly to prevent lateral displacement of the I-beam 5. The spacing between the openings should be controlled at about 1.1m, that is, the distance between two I-beams 5 is 1.0m.

[0029] The anchoring section of the I-beam 5 is fixed by three cold-bent Φ20 round steel bolts and anchor plates. The anchor rings 9 are spaced 200mm apart, and the last anchor ring 9 is 200mm away from the rear section of the I-beam 5. The upper part of the I-beam 5 and the bottom of the floor slab at the anchoring position are fitted with Q235B pressure plates with specifications of (length*width*thickness) 300mm*100mm*10mm. The bolt surface is covered with PVC pipe sleeves, which are pre-embedded before concrete pouring. The steel plate 24 at the bottom of the structural floor slab 10 is mainly set to increase the load-bearing area of ​​the floor slab. The thread height of the end of the anchor ring 9 is not less than 100mm, and the top is fixed with double nuts 23. The nuts 23 need to be tightened twice. The first tightening is after the installation of the I-beam 5, and the second tightening is after the load test of the suspended platform body 3 is completed. The gap between the anchor ring 9 and the I-beam 5 is reinforced by wedging with wooden wedges and nailing with iron nails.

[0030] Three 120*60*5 square tubes 25 are used to connect the two I-beams 5 laterally, so that the I-beams 5 form an integral frame platform. The square tubes 25 are 50mm away from each end of the I-beams 5 and are evenly distributed in the middle. The square tubes 25 are welded to the web and flanges of the I-beams 5 to ensure that the weld is full and free of defects such as slag inclusions and arc damage. L50*5 angle steel is welded to the two ends of the square tubes 25 at the angles with the I-beams 5. The angle steel is 200mm higher than the top surface of the I-beams 5. After the suspended platform body 3 is installed, Φ20 round steel bolts and pressure plates are used to connect the front support leg 6 of the suspended platform to the square tubes 25. Wooden wedges are used to tighten the gap in the anchor ring 9 and nail it firmly. Angle steel and U-shaped rings are used to fix the front support leg 6 of the suspended platform to prevent the suspended platform body 3 from sliding back and forth.

[0031] Reinforcing plate 14 and reinforcing plate 26 are installed at the connection between parapet wall 2 and square tube 25. Reinforcing plate 14 and reinforcing plate 26 are spliced ​​together through connecting groove 22 and connecting protrusion 21, and are connected to square tube 25 on I-beam 5 through triangular plate 12 to reinforce the structure and support the suspended structure and parapet wall 2 to further improve the structural stability. Buckle plate 13 is slidably connected to the outer wall of support plate 19 and connected to parapet wall 2 to further increase the contact area and stress points. Buckle plate 13 can be slidably adjusted up and down to facilitate adjustment according to the height of parapet wall 2.

[0032] The technical means disclosed in this invention are not limited to those described above, but also include technical solutions composed of equivalent substitutions of the above technical features. Matters not covered in this invention are common knowledge to those skilled in the art.

Claims

1. A method for installing a suspended platform at a special corner of a building, comprising a structural floor slab (10) and an extended balcony (1), characterized in that, The extended balcony (1) is set on the outer wall of the structural floor slab (10). The outer wall of the extended balcony (1) is provided with a stone curtain wall (15). The top outer wall of the structural floor slab (10) is fixedly connected to a parapet wall (2). The two sides of the bottom of the parapet wall (2) are provided with reserved openings (8). The inner wall of the reserved openings (8) is inserted with I-beams (5). The two sides of the outer walls of the I-beams (5) are fixedly connected with square tubes (25). The top outer wall of the square tube (25) on one side of the outer wall of the I-beams (5) is fixedly connected with a front support leg (6). The top outer wall of the front support leg (6) is installed with a suspended platform (7). The bottom outer wall of the suspended platform (7) is provided with a hoisting rope (14). The bottom outer wall of the hoisting rope (14) is fixedly connected with a basket body (3). The other side outer wall of the square tube (25) is provided with anchor rings (9). The inner wall of one side of the parapet wall (2) is provided with a first reinforcing plate (4), the inner wall of one side of the parapet wall (2) is provided with a second reinforcing plate (16), the outer wall of one side of the first reinforcing plate (4) is provided with a connecting protrusion (21), and the outer wall of one side of the second reinforcing plate (16) is provided with a connecting groove (22). The size of the connecting protrusion (21) and the connecting groove (22) are matched. The top outer walls of the first reinforcing plate (4) and the second reinforcing plate (16) are fixedly connected to a support plate (19), and the outer walls of the support plate (19) are slidably connected to a buckle plate (13). The buckle plate (13) is adapted to the size of the parapet wall (2). The other outer walls of the buckle plate (13) and the support plate (19) are provided with positioning holes (20). Triangular plates (12) are fixedly connected to the outer walls of the other side of the first reinforcing plate (4) and the second reinforcing plate (16). The other side of the bottom of the triangular plates (12) is provided with mounting holes (18). The triangular plates (12) are all adapted to the size of the square tube (25). The structure is reinforced by connecting the triangular plates (12) to the square tube (25) on the I-beam (5). The bottom outer walls of the first (4) and the second (16) of the reinforcement plate are provided with reserved openings 2 (17), which are adapted to the size of the first (8) and the I-beam (5). The first (4) and the second (16) of the reinforcement plate are adapted to the size of the parapet wall (2).

2. The method for installing a suspended platform at a special corner of a building according to claim 1, characterized in that: The outer wall of the other side of the bottom end of the suspended platform (7) is provided with a rated load (11), which is connected to the structural floor slab (10). The top outer wall of the anchor ring (9) is provided with bolt holes, and the inner wall of the bolt holes is connected with expansion bolts by threads.

3. The method for installing a suspended platform at a special corner of a building according to claim 1, characterized in that: The outer wall of the bottom of the square tube (25) is provided with round steel bars, and the outer wall of the top of the round steel bars is provided with a fixing steel plate (24). The outer wall of the top of the round steel bars is connected with a nut (23) by thread.

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