Construction method of large-weight outwardly inclined glass curtain wall

Abstract

The application provides a large-weight outwardly-inclined glass curtain wall construction method, comprising the following specific steps: S1, utilizing a BIM model, exporting three-dimensional coordinates of the inverted triangular steel frame, dividing the inverted triangular steel frame into an upper part steel frame and a lower part steel frame, welding two groups of cradles on the basis of the size of the inverted triangular steel frame, welding the upper part steel frame and the lower part steel frame on the two groups of cradles respectively, determining the plate block grid, moving the two groups of cradles close to each other, and butting the upper part steel frame and the lower part steel frame; S2; S3; S4; S5; S6, after the glass installation is completed, installing the outermost decorative cover. The construction method exports the three-dimensional coordinates of the inverted triangular steel frame of the outwardly-inclined glass curtain wall from the BIM model, makes the cradle on the ground, and then welds the glass steel keel frame on the cradle. The keel is hoisted and installed by using a car crane, the glass panel is installed by using a glass suction cup vehicle, and the glass panel is treated by gluing, the construction is simple, reliable, obvious in effect, saves construction period, and guarantees quality.

Description

Technical Field

[0001] This invention relates to the field of building engineering technology, and in particular to a construction method for a heavy-duty outward tilting glass curtain wall. Background Technology

[0002] To maintain good lighting and aesthetics, the north and south facades of the complex will feature irregularly shaped glass curtain walls, creating a strong and imposing presence that, together with the curved metal curtain walls, expresses a harmonious blend of strength and softness. This beauty requires meticulous craftsmanship and design from the builders, as the staggered, irregularly shaped glass curtain walls significantly increase the construction difficulty. The north and south facades of the complex feature concave-convex triangular pyramidal glass curtain walls, covering an area of ​​approximately 6600 square meters. The surface layer consists of 8+1.52PVB+8Low-E+16A+10mm insulated tempered laminated glass, with a base layer of 80*200*6mm square steel pipes and 80*80*4mm square steel pipes. The heaviest base layer is the 80*200*6mm square steel pipe, weighing 26.3 kg / m, with a length of 6m, and a single keel weighing 157.8 kg. Each square meter of glass weighs approximately 65 kg, and the largest glass area is 5.2 square meters, weighing 338 kg. The sloping surface of the wind-resistant columns creates a 12° acute angle between the entire glass curtain wall and the ground. With an installation height of 36 meters, the hoisting and installation are challenging and pose a high risk to the construction work. Currently, the steel pipes are hoisted and welded one by one according to the construction drawings, resulting in large errors and poor construction quality and effect. How to ensure minimal installation errors for the irregularly shaped glass curtain wall and how to improve construction quality and efficiency are the problems that this invention aims to solve. Summary of the Invention

[0003] To address the aforementioned problems, this invention provides a construction method for heavy-duty outward-tilting glass curtain walls. This method derives the three-dimensional coordinates of the inverted triangular steel frame of the outward-tilting glass curtain wall from a BIM model, fabricates a jig on the ground, and then welds the fiberglass keel frame onto the jig. A truck crane is used for hoisting and installing the keel, and a glass suction cup truck is used for installing the glass panels and applying sealant. This method is simple, reliable, effective, time-saving, and ensures quality.

[0004] To solve the above problems, the technical solution adopted by the present invention is as follows:

[0005] A construction method for heavy-duty outward-tilting glass curtain walls includes the following specific steps:

[0006] S1. Using the BIM model, export the three-dimensional coordinates of the inverted triangular steel frame, divide the inverted triangular steel frame into an upper steel frame and a lower steel frame, and weld two sets of jigs on the bottom surface of the site according to the size of the inverted triangular steel frame. Weld the upper steel frame and the lower steel frame on the two sets of jigs respectively, determine the segmentation of the plate, and bring the two sets of jigs close to each other to connect the upper steel frame and the lower steel frame.

[0007] S2. Determine the connection point between the inverted triangular steel frame and the building body based on the three-dimensional coordinates of the inverted triangular steel frame. The construction workers use a ladder truck to weld fluorocarbon steel brackets to the connection point on the circular tube of the building steel structure. A crane is used to lift the inverted triangular steel frame after docking to the installation position. Then, the fluorocarbon steel brackets are welded and fixed to the corresponding positions of the inverted triangular steel frame to complete the hoisting process of the inverted triangular steel frame.

[0008] S3. After the jig is completed, the steel keel that needs to be welded is cut to the required size using a plasma cutter. At the same time, slits are cut at the welding locations to increase the welding area. A forklift is used to transport the steel keel to the corresponding jig for welding, rust prevention and fluorocarbon treatment to form individual glass keel panels. Then, a truck crane is used to weld the glass keel panels to form the steel keel frame.

[0009] S4. After the steel keel frame is installed, install the glass profile base on the outer surface of the keel. Secure it with screws spaced 300-350mm apart.

[0010] S5. After the glass profile base is installed, the glass panel is transported using a truck crane and glass suction cups. The glass suction cup truck adjusts the installation direction of the glass in the air and calculates and determines the installation position in real time through sensors. With the suction cups with strong suction, large and heavy glass can be easily lifted. Finally, the on-site construction personnel use a boom lift to fine-tune and fix the glass position at the corresponding location.

[0011] S6. After the glass is installed, install the outermost decorative cover. The cover should be straight. Then, the caulking worker should apply caulking to ensure that the caulking joint is straight, smooth, full, and without obvious seam marks.

[0012] Preferably, both the upper and lower steel frames include three steel pipes, which are respectively located at the three corners of the inverted triangular steel frame.

[0013] Preferably, the jig includes multiple horizontally arranged first H-beams, with second H-beams arranged front-to-back welded to the top of both ends of the multiple first H-beams, and a vertically arranged third H-beam welded to the top of the second H-beams. First limiting rods for limiting the steel pipes on both sides are welded to both ends of the second H-beams, and a second limiting rod for limiting the steel pipe above is welded to one side of the third H-beam.

[0014] Preferably, the height difference between the two second H-beams on the jig is 1-3m, and reinforcing steel is welded between the sidewall of the second H-beam and the first H-beam.

[0015] Preferably, the upper and lower steel frames are connected using a 10mm fluorocarbon steel ferrule sleeve method.

[0016] Preferably, during the welding of the inverted triangular steel frame on the jig, the connection point on the inverted triangular steel frame is determined according to the three-dimensional coordinates, and a fastener is welded at the connection point. During hoisting, the end of the fastener is directly welded to the fluorocarbon steel bracket using a bevel weld.

[0017] Preferably, both the fastener and the fluorocarbon steel bracket are square steel tubes. The fastener is 250mm long and has a specification of 100*250*6mm, and the fluorocarbon steel bracket is 205mm long and has a specification of 100*150*10mm.

[0018] Preferably, the steel keel frame and the inverted triangular steel frame are fixed together by welding multiple supporting steels.

[0019] The beneficial effects of this invention are as follows:

[0020] 1. Export the 3D coordinates of the inverted triangular steel frame of the outwardly tilted glass curtain wall from the BIM model. Fabricate the jig on the ground, and then weld the fiberglass keel frame onto the jig to facilitate the welding process. Use a truck crane for hoisting and installing the keel, and a glass suction cup truck for installing the glass panels and applying sealant. This method is simple, reliable, effective, time-saving, and ensures quality.

[0021] 2. The overall hoisting method is adopted, and a large amount of welding is completed on the ground, which improves welding quality and reduces the safety hazards of high-altitude electric welding; the introduction of glass suction cup trucks improves installation efficiency, reduces construction costs, and reduces safety hazards. This method is suitable for the construction of large-panel, outwardly tilted glass curtain walls, has high scalability, and generates significant benefits.

[0022] 3. Compared with traditional construction methods, the construction technology for heavy-duty outward tilted glass curtain walls reduces the cost and safety hazards of using aerial work platforms, improves welding quality and construction efficiency, enhances on-site construction quality and management level, and reduces safety hazards. The construction achieves the goals of green construction, energy conservation and environmental protection. Compared with traditional construction methods, it saves construction time and costs, and has a better appearance and beautiful lines. Attached Figure Description

[0023] Figure 1 This is a flowchart illustrating the construction process of the present invention.

[0024] Figure 2 This is a schematic diagram of the inverted triangular steel frame structure proposed in this invention;

[0025] Figure 3 This is a schematic diagram of the tire frame structure proposed in this invention;

[0026] Figure 4 This is a front view of the tire frame proposed in this invention;

[0027] Figure 5This is a schematic diagram of the connection between the fluorocarbon steel bracket and the fastener proposed in this invention.

[0028] In the diagram: 1 First H-beam, 2 Second H-beam, 3 Third H-beam, 4 First limiting rod, 5 Second limiting rod, 6 Reinforcing steel, 7 Inverted triangular steel frame, 71 Upper steel frame, 72 Lower steel frame, 73 Steel pipe, 8 Fastener, 9 Fluorocarbon steel bracket, 10 Architectural steel structure round pipe. Detailed Implementation

[0029] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0030] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0031] Reference Figure 1-5 A construction method for heavy-duty outward-tilted glass curtain walls includes the following specific steps:

[0032] S1. Using the BIM model, export the three-dimensional coordinates of the inverted triangular steel frame 7, divide the inverted triangular steel frame 7 into an upper steel frame 72 and a lower steel frame 71. Based on the dimensions of the inverted triangular steel frame 7, weld two sets of jigs on the bottom surface on site, and weld the upper steel frame 72 and the lower steel frame 71 onto the two sets of jigs respectively to determine the panel division. The two sets of jigs are brought close to each other, and the upper steel frame 72 and the lower steel frame 71 are connected. The upper steel frame 72 and the lower steel frame 71 are connected using a 10mm fluorocarbon steel insert sleeve method.

[0033] Furthermore, calculations show that the maximum weight of the upper steel frame 72 is 6.35T, and the total mass of the lower steel frame 71 is approximately 3.63T. Calculations have shown that a 50T crane meets the load-bearing requirements.

[0034] S2. Based on the three-dimensional coordinates of the inverted triangular steel frame 7, determine its connection point with the building body. The construction workers use a ladder truck to weld fluorocarbon steel brackets 9 at the connection point on the circular tube 10 of the building steel structure. A crane is used to lift the connected inverted triangular steel frame 7 to the installation position. Then, the fluorocarbon steel brackets 9 are welded and fixed to the corresponding positions of the inverted triangular steel frame 7 to complete the hoisting process of the inverted triangular steel frame 7.

[0035] Specifically, during the welding of the inverted triangular steel frame 7 on the jig, the connection point on the inverted triangular steel frame 7 is determined according to the three-dimensional coordinates, and the fixing part 8 is welded at the connection point. During hoisting, the end of the fixing part 8 is directly welded to the fluorocarbon steel bracket 9 in the form of bevel welding.

[0036] S3. After the jig is completed, the steel keel that needs to be welded is cut to the required size using a plasma cutter. At the same time, slits are cut at the welding locations to increase the welding area. A forklift is used to transport the steel keel to the corresponding jig for welding, rust prevention and fluorocarbon treatment to form individual glass keel panels. Then, a truck crane is used to weld the glass keel panels to form the steel keel frame.

[0037] Specifically, the steel keel frame and the inverted triangular steel frame 7 are fixed together by welding multiple supporting steels.

[0038] S4. After the steel keel frame is installed, install the glass profile base on the outer surface of the keel. Secure it with screws spaced 300-350mm apart.

[0039] S5. After the glass profile base is installed, the glass panel is transported using a truck crane and glass suction cups. The 40-meter glass suction cup truck adjusts the installation direction of the glass in the air and calculates and determines the installation position in real time through sensors. With the suction cup with a suction force of 1.2 tons at the front, the large and heavy glass can be easily lifted 36 meters. Finally, the on-site construction personnel use a boom lift to make fine adjustments and fix the glass position at the corresponding location.

[0040] S6. After the glass is installed, install the outermost decorative cover. The cover should be straight. Then, the caulking worker should apply caulking to ensure that the caulking joint is straight, smooth, full, and without obvious seam marks.

[0041] Furthermore, both the upper steel frame 72 and the lower steel frame 71 include three steel pipes 73, which are respectively set at the three corners of the inverted triangular steel frame 7, and multiple connecting steel pipes are welded between the three steel pipes 73.

[0042] Specifically, the jig includes multiple horizontally arranged first H-beams 1, with second H-beams 2 arranged front-to-back welded to the top of both ends of the multiple first H-beams 1, and third H-beams 3 arranged vertically welded to the top of the second H-beams 2. First limiting rods 4 arranged vertically for limiting the steel pipes 73 on both sides are welded to both ends of the second H-beams 2, and second limiting rods 5 for limiting the upper steel pipe 72 are welded to one side of the third H-beams 3.

[0043] Furthermore, the height difference between the two second H-beams 2 on the frame is 1-3m. The side wall of the second H-beam 2 is welded with a reinforcing steel 6 between it and the first H-beam 1. The upper steel pipe 72 is placed obliquely on the two second limiting rods 5, which makes the erection convenient and easy to weld.

[0044] Furthermore, both the fastener 8 and the fluorocarbon steel bracket 9 are square steel tubes. The fastener 8 is 250mm long and has a size of 100*250*6mm. The fluorocarbon steel bracket 9 is 205mm long and has a size of 100*150*10mm.

[0045] The 3D coordinates of the inverted triangular steel frame of the outwardly tilted glass curtain wall were exported from the BIM model. A jig was fabricated on the ground, and then the fiberglass keel frame was welded onto the jig, facilitating the welding process. A truck crane was used for keel hoisting and installation, while glass suction cup trucks were used for glass panel installation and caulking. This method is simple, reliable, and effective, saving time and ensuring quality. The overall hoisting method allows for extensive welding to be completed on the ground, improving welding quality and reducing the safety hazards of high-altitude welding. The introduction of glass suction cup trucks improves installation efficiency, reduces construction costs, and minimizes safety hazards. This method is suitable for large-panel, outwardly tilted glass curtain wall construction, has high scalability, and yields significant benefits.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A construction method for a heavy-duty, outwardly tilted glass curtain wall, characterized in that, The specific steps include the following: S1. Using the BIM model, export the three-dimensional coordinates of the inverted triangular steel frame (7), divide the inverted triangular steel frame (7) into an upper steel frame (72) and a lower steel frame (71), and weld two sets of jigs on the bottom surface of the inverted triangular steel frame (7) according to the size of the inverted triangular steel frame (7). Weld the upper steel frame (72) and the lower steel frame (71) on the two sets of jigs respectively, determine the plate division, and bring the two sets of jigs close to each other to connect the upper steel frame (72) and the lower steel frame (71). S2. Based on the three-dimensional coordinates of the inverted triangular steel frame (7), determine its connection point with the building body. The construction workers use a ladder truck to weld fluorocarbon steel brackets (9) onto the connection point on the building steel structure round pipe (10). A crane is used to lift the inverted triangular steel frame (7) after docking to the installation position. Then, the fluorocarbon steel brackets (9) are welded and fixed to the corresponding positions of the inverted triangular steel frame (7) to complete the hoisting process of the inverted triangular steel frame (7). S3. After the jig is completed, the steel keel that needs to be welded is cut to the required size using a plasma cutter. At the same time, slits are cut at the welding locations to increase the welding area. A forklift is used to transport the steel keel to the corresponding jig for welding, rust prevention and fluorocarbon treatment to form individual glass keel panels. Then, a truck crane is used to weld the glass keel panels to form the steel keel frame. S4. After the steel keel frame is installed, install the glass profile base on the outer surface of the keel. Secure it with screws spaced 300-350mm apart. S5. After the glass profile base is installed, the glass panel is transported using a truck crane and glass suction cups. The glass suction cup truck adjusts the installation direction of the glass in the air and calculates and determines the installation position in real time through sensors. With the suction cups with strong suction, large and heavy glass can be easily lifted. Finally, the on-site construction personnel use a boom lift to fine-tune and fix the glass position at the corresponding location. S6. After the glass is installed, install the outermost decorative cover. The cover should be straight. Then, the caulking worker should apply caulking to ensure that the caulking joint is straight, smooth, full, and without obvious seam marks. The upper steel frame (72) and the lower steel frame (71) each include three steel pipes (73). The three steel pipes (73) are respectively set at the three corners of the inverted triangular steel frame (7). The frame includes multiple horizontally arranged first H-shaped steels (1). The top of both ends of the multiple first H-shaped steels (1) are welded with second H-shaped steels (2) arranged in a front-back direction. The top of the second H-shaped steels (2) is welded with a vertically arranged third H-shaped steel (3). The two ends of the second H-shaped steels (2) are welded with first limiting rods (4) arranged vertically to limit the steel pipes (73) on both sides. The third H-shaped steel (3) is welded with a second limiting rod (5) to limit the upper steel pipe (73) on one side. The height difference between the two second H-shaped steels (2) on the frame is 1-3m. The side wall of the second H-shaped steel (2) is welded with reinforcing steel (6) between the first H-shaped steel (1).

2. The construction method for a heavy-duty outwardly tilted glass curtain wall according to claim 1, characterized in that, The upper steel frame (72) and the lower steel frame (71) are connected using a 10mm fluorocarbon steel ferrule sleeve method.

3. The construction method for a heavy-duty outwardly tilted glass curtain wall according to claim 1, characterized in that, During the process of welding the inverted triangular steel frame (7) on the jig, the connection point on the inverted triangular steel frame (7) is determined according to the three-dimensional coordinates, and the fixing part (8) is welded at the connection point. During hoisting, the end of the fixing part (8) is directly welded to the fluorocarbon steel bracket (9) in the form of bevel welding.

4. The construction method for a heavy-duty outwardly tilted glass curtain wall according to claim 3, characterized in that, Both the fastener (8) and the fluorocarbon steel bracket (9) are square steel pipes. The fastener (8) is 250mm long and has a specification of 100*250*6mm. The fluorocarbon steel bracket (9) is 205mm long and has a specification of 100*150*10mm.

5. The construction method for a heavy-duty outwardly tilted glass curtain wall according to claim 1, characterized in that, The steel keel frame and the inverted triangular steel frame (7) are fixed together by welding multiple supporting steels.

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