Construction method of large-span daylighting roof

Abstract

The application belongs to the technical field of large-span daylighting roof construction, and particularly relates to a large-span daylighting roof construction method, which solves the technical problem that the existing large-span daylighting roof construction method is suitable for regular rectangular daylighting roofs and is not suitable for irregular daylighting roofs, and comprises the following steps: setting up a gantry crane on a roof, installing a steel structure main keel and a steel structure secondary keel through the gantry crane, a ring-shaped steel support, an electric hoist and a hanging basket, welding a curtain wall adapter above the steel structure main keel and the steel structure secondary keel, and positioning and installing curtain wall keels on the gantry crane; and installing glass panels by using the hanging basket and a glass panel hoisting platform. The application is suitable for large-span daylighting roofs, especially irregular daylighting roofs, and does not occupy vertical transport tools such as tower cranes; and the application does not occupy indoor space and does not affect indoor decoration, and can be used for daylighting roof maintenance in the case of indoor business.

Description

Technical Field

[0001] This invention relates to the technical field of large-span skylight construction, and more particularly to a method for constructing large-span skylights. Background Technology

[0002] The existing method for installing large-span skylights is the high-altitude assembly method, which involves erecting scaffolding indoors, having workers stand on the scaffolding to hoist the skylight steel frame components, and then assembling the skylight steel frame. This method is simple, but it requires the erection of temporary scaffolding indoors, which seriously affects the interior decoration of the scaffolded areas and results in low work efficiency.

[0003] A cable net platform is strung around the structure, and a safety net is laid below the cable net. The cable net's connection points must be calculated based on structural stress. Wooden planks are laid over the cable net to serve as a working platform for construction workers; major materials should not be piled up there. A tower crane is used as the primary vertical transport equipment. The steel structure is fabricated into modular units, and temporary mobile frames are erected on the cable net platform as auxiliary working platforms for the overall assembly of the steel structure. This method requires pre-embedded sleeves in the surrounding beams to allow the cable net to pass through and be fixed. It places high demands on the surrounding beams and requires constant monitoring of the cable net platform's deformation coefficient. This method is highly specialized and occupies the tower crane for extended periods, affecting other construction work.

[0004] Chinese patent document CN1670322A discloses a "Matrix-Type Jacking Installation Method for Large-Span, Deep-Sectional Steel Structures." This method involves setting up an assembly frame on the outside of the skylight span, arranging sliding tracks, and assembling the main truss on the flat assembly frame. A crane is used to lift the main truss onto the frame for assembly. After assembly, the main truss and columns are jacked and shifted one column spacing along the sliding tracks using hydraulic jacks and reaction frames. This process is repeated until completion. This method is more suitable for regular rectangular skylights but not for irregular skylights. Summary of the Invention

[0005] To overcome the technical shortcomings of existing large-span skylight construction methods, which are suitable for regular rectangular skylights but not for irregular skylights, this invention provides a construction method for large-span skylights.

[0006] This invention provides a construction method for a large-span skylight, comprising the following steps: Step 1: Use a truck crane or tower crane to vertically transport the gantry crane steel frame assembly materials to the roof on the ground, and use the roof as a construction site to assemble the gantry crane steel frame. Step 2: Erect a safety net below the skylight opening; arrange two parallel gantry crane tracks along the length of the skylight, and use a truck crane or tower crane to stand the assembled gantry crane steel frame and install it in place on the gantry crane tracks. The construction platform is now complete. Step 3: Use a gantry crane to install a ring-shaped steel support around the opening of the skylight, and connect the ring-shaped steel support to the embedded parts in the roof. The ring-shaped steel support is located between the two gantry crane tracks. Step 4: Use a gantry crane to hoist the main steel keel in the middle of the skylight. The main steel keel is assembled on the roof and then positioned as a whole using two electric hoists on the gantry crane. Step 5: The gantry crane lifting the main steel keel slides along the gantry crane track under the traction of the electric chains on both sides, ensuring that the gantry crane moves in parallel and synchronously; Step 6: After the gantry crane is moved into place, the main steel keel spans the skylight opening and its two ends are welded to the ring steel support. The hoisting ropes on the main steel keel can only be removed after the connection between the main steel keel and the ring steel support is stable. Step 7: Repeat steps 4 to 6. After the keel of two adjacent steel structure columns is installed and fixed, set up a suspended platform on the gantry crane. One electric crane lifts the secondary steel structure keel, and the other electric crane lifts the suspended platform. Workers operate in the suspended platform to install the secondary steel structure keel between the two main steel structure keels. After the secondary steel structure keel between the two main steel structure keels is installed, the remaining main and secondary steel structure keels are installed, with the main and secondary steel structure keels installed symmetrically from the middle to both sides. Step 8: Weld the curtain wall transition pieces above the main steel keel and secondary steel keel. After this step is completed, fully review the deformation of the steel structure and promptly feed the relevant data back to the design department and processing plant, and make timely fine adjustments to the processing of the curtain wall keel and glass. Step 9: Position and install the curtain wall keel using a suspended platform on the gantry crane. The suspended platform can be raised freely within the curtain wall section. Step 10: Install the glass panels using a suspended platform and glass panel hoisting platform; install the glass panels symmetrically at two points simultaneously to ensure balanced loading at both ends of the steel structure and avoid deformation or instability of the steel structure due to eccentric loading. Step 11: After the fixed glass panel is installed, install the operable fan. This step requires coordination with the electric opening and low-voltage fire protection linkage construction unit. After the operable fan is installed, conduct an opening test in a timely manner and adjust the opening hardware and related circuits accordingly.

[0007] Compared with the prior art, the technical solution provided by this invention has the following technical features: the invention is applicable to large-span skylights, especially irregular skylights, and does not occupy vertical transportation tools such as tower cranes; moreover, the use of this construction technology does not occupy indoor space or affect interior decoration, and can be used for skylight maintenance, especially in the case of indoor business operations; this construction method can be carried out before or after the roof construction, and can be carried out in parallel with other sub-projects, saving construction time. Attached Figure Description

[0008] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0009] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1 This is a schematic diagram illustrating the operation of installing the main steel keel in a construction method for a large-span skylight as described in a certain embodiment of the present invention. Figure 2 This is a schematic diagram illustrating the operation of installing the secondary steel keel in a construction method for a large-span skylight as described in a certain embodiment of the present invention. Figure 3 This is a detailed structural diagram of the suspended platform in a construction method for a large-span skylight as described in a certain embodiment of the present invention; Figure 4 This is a schematic diagram of the structure after the main steel keel and secondary steel keel are installed in a construction method for a large-span skylight as described in a certain embodiment of the present invention.

[0011] In the diagram: 1. Roof; 2. Gantry crane track; 3. Gantry crane; 4. Base pulley; 5. Electric crane; 6. Hoisting rope; 7. Main steel keel; 8. Ring steel support; 9. Skylight opening; 10. Secondary steel keel; 11. Suspended basket; 12. Worker; 13. Movable pulley. Detailed Implementation

[0012] To better understand the above-mentioned objectives, features, and advantages of the present invention, the solutions of the present invention will be further described below. It should be noted that, unless otherwise specified, the embodiments of the present invention and the features thereof can be combined with each other.

[0013] Many specific details are set forth in the following description in order to provide a full understanding of the invention, but the invention may also be practiced in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of the invention, and not all embodiments.

[0014] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0015] In one embodiment, such as Figure 1 As shown, a construction method for a large-span skylight is disclosed, including the following steps: Step 1: Use a truck crane or tower crane to vertically transport the assembly materials of the gantry crane 3 steel frame to the roof 1 on the ground. Use the roof 1 as the construction site to assemble the gantry crane 3 steel frame. Step 2: Erect a safety net below the skylight opening 9; arrange two parallel gantry crane tracks 2 along the length of the skylight on the roof 1, and use a truck crane or tower crane to make the welded gantry crane 3 steel frame stand up and install it on the gantry crane tracks 2. The construction platform is now erected. Step 3: Use a gantry crane to install a ring-shaped steel support 8 around the skylight opening 9, and connect the ring-shaped steel support 8 to the pre-embedded parts of the roof 1. The ring-shaped steel support 8 is located between the two gantry crane tracks 2. Step 4: Use gantry crane 3 to hoist the main steel keel 7 in the middle of the skylight. The main steel keel 7 is spliced ​​on the roof 1 and positioned as a whole using the two electric cranes 5 on gantry crane 3. Step 5: The gantry crane 3, which lifts the main steel keel 7, slides along the gantry crane track 2 under the traction of the electric chains on both sides, ensuring that the gantry crane 3 moves in parallel and synchronously. Step 6: After the gantry crane 3 is moved into place, the main steel keel 7 spans the skylight opening 9 and its two ends are welded to the ring steel support 8. Only after ensuring that the main steel keel 7 and the ring steel support 8 are stably connected can the hoisting rope 6 on the main steel keel 7 be removed. Step 7: Repeat steps 4 to 6. After the keel of two adjacent steel structure columns is installed and fixed, set up a basket 11 on the gantry crane 3. One electric crane 5 lifts the secondary steel structure keel 10, and the other electric crane 5 lifts the basket 11. Workers 12 operate in the basket 11 to install the secondary steel structure keel 10 between the two main steel structure keels 7. After the secondary steel structure keel 10 between the two main steel structure keels 7 is installed, the remaining main steel structure keels 7 and secondary steel structure keels 10 are installed. The main steel structure keels 7 and secondary steel structure keels 10 are installed symmetrically from the middle to both sides. Step 8: Weld the curtain wall transition pieces above the main steel keel 7 and the secondary steel keel 10. After this step is completed, fully review the deformation of the steel structure and promptly feed the relevant data back to the design department and the processing plant, and make timely fine adjustments to the processing of the curtain wall keel and glass. Step 9: Position and install the curtain wall keel on the gantry crane 3 using the suspended platform 11. The suspended platform 11 can be freely lifted within the curtain wall grid area. Step 10: Install the glass panels using the suspended platform 11 and the glass panel hoisting platform; install the glass panels symmetrically at two points simultaneously to ensure balanced loading at both ends of the steel structure and avoid deformation or instability of the steel structure due to eccentric loading. Step 11: After the fixed glass panel is installed, install the operable fan. This step requires coordination with the electric opening and low-voltage fire protection linkage construction unit. After the operable fan is installed, conduct an opening test in a timely manner and adjust the opening hardware and related circuits accordingly.

[0016] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the present invention. Although detailed descriptions have been provided with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments, and all should be covered by the protection scope of the claims.

Claims

1. A construction method for a large-span skylight, characterized in that, Includes the following steps: Step 1: Use a truck crane or tower crane to vertically transport the steel frame assembly materials of the gantry crane (3) to the roof (1) on the ground, and use the roof (1) as the construction site to assemble the steel frame of the gantry crane (3); Step 2: Erect a safety net below the skylight opening (9); arrange two parallel gantry crane tracks (2) along the length of the skylight on the roof (1); use a truck crane or tower crane to make the assembled gantry crane (3) stand upright and install it on the gantry crane track (2) through the base pulley (4); the construction platform is completed. Step 3: Use a gantry crane (3) to install a ring steel support (8) around the skylight opening (9), and connect the ring steel support (8) to the pre-embedded parts of the roof (1). The ring steel support (8) is located between the two gantry crane tracks (2). Step 4: Use a gantry crane (3) to hoist the main steel keel (7) in the middle of the skylight. The main steel keel (7) is spliced ​​on the roof (1) and positioned as a whole using two electric cranes (5) on the gantry crane (3). The electric cranes (5) are connected to the hoisting ropes (6) through the pulleys (13). Step 5: The gantry crane (3) lifting the main steel keel (7) slides along the gantry crane track (2) under the traction of the electric chains on both sides, ensuring that the gantry crane (3) moves in parallel and synchronously; Step 6: After the gantry crane (3) is moved into place, the main steel keel (7) spans the skylight opening (9) and its two ends are welded to the ring steel support (8). Only after ensuring that the main steel keel (7) and the ring steel support (8) are stably connected can the hoisting rope (6) on the main steel keel (7) be removed. Step 7: Repeat steps 4 to 6. After the two adjacent main steel keels are installed and fixed, a basket (11) is set up on the gantry crane (3). One electric crane (5) lifts the secondary steel keel (10), and the other electric crane (5) lifts the basket (11). The worker (12) operates in the basket (11) to install the secondary steel keel (10) between the two main steel keels (7). After the secondary steel keel (10) between the two main steel keels (7) is installed, the remaining main steel keels (7) and secondary steel keels (10) are installed. The main steel keels (7) and secondary steel keels (10) are installed symmetrically from the middle to both sides. Step 8: Weld the curtain wall transition pieces above the main steel keel (7) and the secondary steel keel (10). After this step is completed, fully review the deformation of the steel structure and promptly feed the relevant data back to the design department and the processing plant. Make timely fine adjustments to the processing of the curtain wall keel and glass. Step 9: Position and install the curtain wall keel on the gantry crane (3) using the suspended basket (11). The suspended basket (11) can be freely lifted within the curtain wall grid area. Step 10: Use the suspended platform (11) and glass panel hoisting platform to install the glass panels; install the glass panels symmetrically at two points simultaneously to ensure that the load on both ends of the steel structure is balanced and to avoid deformation or instability of the steel structure due to eccentric loading. Step 11: After the fixed glass panel is installed, install the operable fan. This step requires coordination with the electric opening and low-voltage fire protection linkage construction unit. After the operable fan is installed, conduct an opening test in a timely manner and adjust the opening hardware and related circuits accordingly.

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