Three-dimensional modeling-based canopy construction method for double-curved-surface glass curtain wall

Abstract

The invention provides a three-dimensional modeling-based flutter construction method for a double-curved-surface glass curtain wall. The method comprises the following steps of: S1, determining a boundary line of a main curtain wall and the double-curved-surface glass curtain wall on a building; s2, performing three-dimensional modeling on the double-curved-surface glass curtain wall according to the design drawing; s3, dividing the steel structure floating tent into a roof steel structure and a double-curved-surface floating tent; s4, after the construction of the steel structure canopy is completed, glass installation is conducted; s5, after the flutter glass is constructed to the curtain wall boundary line, determining the size of a layer of main body curtain wall glass above the curtain wall boundary line, and blanking; and S6, the main curtain wall and the double-curved-surface glass curtain wall are connected. By means of three-dimensional modeling and accurate survey lofting, the boundary line and the component size of the curtain wall can be accurately determined, construction errors are reduced, and the overall accuracy of the double-curved-surface glass curtain wall canopy is improved. And by adopting a ground splicing and integral hoisting mode, the high-altitude operation amount is reduced, and the construction period is shortened.

Description

Technical Field

[0001] The invention belongs to the technical field of building construction, and in particular relates to a floating canopy construction method of a hyperbolic glass curtain wall based on three-dimensional modeling. Background Art

[0002] Hyperbolic glass curtain walls are widely used in modern architecture for their unique shape and visual appeal. However, when combined with canopies, a crucial component of building facades, traditional construction methods often present numerous challenges. For example, traditional surveying and layout techniques struggle to accurately determine the boundary lines of complex curtain wall shapes. Cutting and fabricating hyperbolic glass and steel components lack precise guidelines, leading to material waste and inefficient construction. Accuracy and quality are difficult to ensure during glass installation. Positioning and alignment of steel structures are challenging, impacting overall structural stability.

[0003] Therefore, it is necessary to provide an improved technical solution to the above-mentioned deficiencies in the prior art. Summary of the Invention

[0004] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art. The present invention provides a method for constructing a canopy of a hyperbolic glass curtain wall based on three-dimensional modeling.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A floating canopy construction method for a hyperbolic glass curtain wall based on three-dimensional modeling, comprising:

[0007] Step S1, measuring and setting out the exterior of the building to determine the boundary lines of the main curtain wall and the hyperbolic glass curtain wall on the building;

[0008] Step S2: 3D modeling of the hyperbolic glass curtain wall is performed according to the design drawings, and steel components and glass of the canopy are cut and manufactured according to the 3D model, and each steel component and glass of the canopy is numbered;

[0009] Step S3: The steel structure canopy is divided into the roof steel structure and the hyperbolic canopy. The hyperbolic canopy is hoisted as a whole after the components are assembled on the ground. First, the curved main portal of the hyperbolic canopy is hoisted, and temporary supports are set on the main portal;

[0010] Step S4: After the steel structure canopy is completed, the glass is installed. The glass installation number is installed piece by piece from bottom to top. A stepped fastener-type steel pipe scaffold is set up on the canopy. Workers install the glass on the scaffold and on a boom lift.

[0011] Step S5: After the floating glass is constructed to the curtain wall boundary line, the construction error of the floating glass is measured based on the curtain wall boundary line, and the size of the main curtain wall glass above the curtain wall boundary line is determined based on the construction error and cut;

[0012] Step S6: Install a layer of main curtain wall glass above the curtain wall boundary line to connect the main curtain wall and the hyperbolic glass curtain wall.

[0013] Preferably, a plurality of decorative aluminum panels are provided on the hyperbolic glass curtain wall to separate the multiple rows of glass in the horizontal direction;

[0014] After the decorative aluminum panels arrive at the site, they should be packed according to the number and then transported to the construction site. First, they should be positioned and marked to determine the horizontal and vertical positions of the aluminum panels, and then the decorative aluminum panel keel brackets should be installed on the canopy steel components.

[0015] Set control points on the outer plane of the curtain wall, and generate control lines based on the control points to control the plane deviation of the decorative aluminum plate and the relative positions of each component;

[0016] Use the keel-shaped bracket to adjust and fix the decorative aluminum plate. Hang the curtain wall longitudinal plane reference line from the decorative aluminum plate single plate on the top of the curtain wall. Draw a horizontal line between the two curtain wall longitudinal plane reference lines. Use the horizontal line and vertical line to determine the current construction control plane.

[0017] Preferably, after the glass is hoisted to the installation location, two workers coordinate and cooperate to install the glass on the keel. No less than two elastic positioning pads should be used at the bottom of the glass. The length of the rubber strips around the glass should be 1.5%-2% longer than the notch in the frame. After the bevel is broken, it should be assembled into a predetermined design angle and firmly bonded with adhesive before being embedded in the groove.

[0018] Preferably, before the construction of the roof steel structure, the steel columns are positioned and the ear plates are welded and the embedded plates are corrected. After the steel columns are hoisted into place, the steel beams are welded and fixed. After the steel beams and steel columns are welded into one, the roof beams are constructed.

[0019] Preferably, after the steel column is hoisted into place, correction lugs are welded on the four sides, holes are opened on the correction lugs, the steel column is unloaded by the slings below after being hoisted into place, theodolites are set up on two mutually perpendicular sides of the steel column for observation, and bolts are used in the holes to correct the steel structure;

[0020] After the correction is completed, the steel structure positioning ear plates are welded and fixed at the four corners of the embedded plate. After the slings are completely unloaded, re-measurement is carried out. After the re-measurement is qualified, the correction ear plates are removed.

[0021] Preferably, after the roof steel structure is completed, the hyperbolic canopy is constructed. After the main portal frame of the hyperbolic canopy is hoisted into place, temporary supports are installed. Then the main portal frame is adjusted and calibrated. After the main portal frame is measured to meet the requirements, the main portal frame and the embedded plate are welded and fixed.

[0022] The curved steel beam is hoisted into place, adjusted and corrected, and then welded to the main portal frame. The temporary support is then removed and the steel grid construction is carried out.

[0023] Preferably, the temporary support is a steel frame, the support points of the steel frame are designed according to the three-dimensional model, and the steel frame is cut and manufactured based on the support points.

[0024] Preferably, the main curtain wall and the hyperbolic glass curtain wall are constructed simultaneously, and the decorative aluminum panels of the main curtain wall and the hyperbolic glass curtain wall are connected to each other and extend along the main body of the building.

[0025] Beneficial Effects: Through 3D modeling and precise measurement and layout, curtain wall boundaries and component dimensions were accurately determined, reducing construction errors and improving the overall precision of the hyperbolic glass curtain wall canopy. Ground assembly and overall hoisting reduced overhead work and shortened the construction period. Furthermore, numbered management streamlined material supply and installation, improving construction efficiency.

[0026] The glass can be customized in the main body of the building and the canopy, so that the assembly requirements at the error points can be met through customization. During the construction of the main body of the building and the canopy, there is no need to set high requirements for construction errors, thereby improving the overall construction efficiency and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings and the accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. Among them:

[0028] Figure 1 This is a construction flow chart for the specific implementation of the present invention. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention are within the scope of protection of the present invention.

[0030] In the description of the present invention, the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention. The terms "connected" and "connected" used in the present invention should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be a direct connection or an indirect connection through an intermediate component. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0031] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other.

[0032] like Figure 1 As shown, a method for constructing a canopy of a hyperbolic glass curtain wall based on three-dimensional modeling includes: step S1, measuring and setting out the exterior of a building, determining the boundary line between the main curtain wall and the hyperbolic glass curtain wall on the building, and using a total station to calibrate the boundary line between the main curtain wall and the hyperbolic curtain wall on the facade of the building, with the error controlled within ±3 mm;

[0033] Step S2, perform three-dimensional modeling of the hyperbolic glass curtain wall according to the design drawings, and cut and produce the canopy steel components and glass according to the three-dimensional model, and number each canopy steel component and glass to ensure the accuracy of the materials and the orderliness of the construction; in this embodiment, the hyperbolic glass and steel components are parametrically split based on the BIM model, and processing data is generated and numbered to ensure that the components correspond to the model one by one. First, integrate the professional drawings of architecture, structure, and curtain wall (CAD / DWG), focusing on the coordinates of the control points of the surface, the size of the glass grid, and the node connection method. According to the limit size of the glass hot bending process (such as the maximum curvature radius of a single piece) and transportation conditions (such as the cargo size of a truck), the surface is split into implementable unit modules. The installation coordinates of the curved curtain wall support keels are automatically calculated through a script to ensure that the normal direction of each keel matches the curvature of the glass. The component coordinates and angle information in the model are directly exported as CNC processing code for precision processing such as steel keel cutting and glass edge grinding.

[0034] Step S3: The steel structure canopy is divided into roof steel structure and hyperbolic canopy. The hyperbolic canopy is hoisted as a whole after the components are assembled on the ground. First, the arc-shaped main portal of the hyperbolic canopy is hoisted, and temporary supports are set on the main portal. The temporary supports are steel frames designed according to the three-dimensional model, and the steel frames are cut and manufactured according to the support points to provide stable support for the main portal.

[0035] Step S4: After the steel structure canopy is completed, the glass is installed. Glass installation is performed piece by piece, starting from the bottom up. A stepped, fastener-type steel pipe scaffold is erected on the canopy. Workers install the glass from the scaffold and a boom lift. After the glass is hoisted to its installation location, two workers coordinate and install it onto the keel. No fewer than two elastic positioning pads should be used at the bottom of the glass. The rubber strips surrounding the glass should be 1.5%-2% longer than the notch in the frame, with the broken edges left at the four corners. After the bevel is broken, it should be assembled to the predetermined design angle, bonded securely with adhesive, and then inserted into the groove. Once the glass is installed, a glass clamp is used to temporarily secure it.

[0036] After the glass installation is complete in a single construction section, it should be adjusted uniformly. The standards for adjustment are horizontal, vertical, and flat surfaces. Horizontal flatness means horizontal beams and glue joints; verticality means vertical keels; and flat surfaces mean that all glass panes are on the same plane or curved surface. After outdoor adjustments, check indoors to ensure that the required areas are level and that all dimensions meet the required specifications. Immediately secure the glass with rubber pads, ensuring they are firmly pressed in place to prevent loosening.

[0037] The application of weather-resistant silicone sealant needs to be carried out after the installation of the outer decorative aluminum panel is completed. Before applying the sealant, the sealing area should be cleaned to prevent dust from affecting the bonding effect. Masking tape should be applied to important parts to avoid contamination.

[0038] Step S5: After the floating glass is constructed to the curtain wall boundary line, the construction error of the floating glass is measured based on the curtain wall boundary line. Based on the construction error, the size of the main curtain wall glass above the curtain wall boundary line is determined and cut. By integrating the construction error at the joint between the two, the glass can be customized. The construction error is compensated by customization, so that there is no need to set too high requirements on the construction error during the construction of the building main body and the floating glass, thereby improving the overall construction efficiency and quality.

[0039] Step S6: Install a layer of main curtain wall glass above the curtain wall boundary line to connect the main curtain wall and the hyperbolic glass curtain wall.

[0040] In an optional embodiment, a plurality of decorative aluminum panels are provided on the hyperbolic glass curtain wall to separate multiple rows of glass in the horizontal direction. After the aluminum panels arrive at the site, they should be classified and packed according to the numbers and then transported to the vicinity of the construction surface. They should be placed in an orderly, stable and reliable manner to prevent overturning. The curtain wall decorative aluminum panels and the glass curtain wall are the same curtain wall system. The installation of embedded parts and keels are basically the same as those of the glass curtain wall embedded parts and keels. They will not be repeated here. Some aluminum panels are larger in shape and need to be welded and installed on the embedded parts. Attention should be paid to construction deviation and welding quality during installation.

[0041] When the decorative aluminum panels are brought to the site, they are first positioned and marked to determine the horizontal and vertical positions of the aluminum panels, and the decorative aluminum panel keel brackets are installed on the canopy steel components; control points are set on the outer plane of the curtain wall, and first positioned and marked to determine the horizontal and vertical positions of the aluminum panels, and control points are set on the outer plane of the frame, and control lines are drawn to control the installation plane deviation and the position of each component; control lines are generated based on the control points to control the plane deviation of the decorative aluminum panels and the relative position of each component; the decorative aluminum panels are adjusted and fixed using the keel brackets, and the longitudinal plane reference line of the curtain wall is hung from the decorative aluminum panel at the top of the curtain wall. A horizontal line is drawn between the two longitudinal plane reference lines of the curtain wall, and the horizontal and vertical lines are used to determine the current construction control plane.

[0042] After the aluminum sheet is installed, cover the easily contaminated areas with adhesive tape or plastic film. Install guardrails on areas prone to scratches. Use cleaning agents that are non-corrosive to aluminum profiles and other materials.

[0043] In an optional embodiment, before the construction of the roof steel structure, the steel columns are positioned and the ear plates are welded and the embedded plates are corrected. A 12m long national standard 20a I-beam is used as a shoulder beam to hoist the curved steel structure. After the steel columns are hoisted into place, the steel beams are welded and fixed. Temporary support ear plates are welded at both ends of the steel beams. The steel beams are hoisted to the top of the steel columns by two-point lifting, gently dropped on the steel columns, and then the slings are gently loosened to unload the force. The theodolites are set up on two sides perpendicular to the steel beams for observation. If the position deviation is small, the position is adjusted by hammering or crowbars. If the deviation is large, the steel beam is lifted 1-2cm and manually assisted to place it in place, and the above operation is repeated until it is qualified. After the correction is completed, the hook is lowered to completely unload the force, and the steel beam is first preliminarily welded and fixed. The deviation is observed again to ensure that the deviation meets the requirements before the overall welding and the ear plates are removed. Otherwise, the correction should be repeated. After the overall welding is completed, the welding quality is inspected. The slings can be removed only after the inspection is qualified. After the steel beam and the steel column are welded into one, the roof beam construction is carried out.

[0044] Specifically, after the steel column is hoisted into place, correction lugs are welded on the four sides, holes are drilled on the correction lugs (threads are processed on the inner walls of the holes), the steel column is hoisted into place and the force is unloaded by the slings below, theodolites are set up on two mutually perpendicular sides of the steel column for observation, and bolts are used in the holes to correct the steel structure;

[0045] After the correction is completed, the steel structure positioning ear plates are welded and fixed at the four corners of the embedded plate. After the slings are completely unloaded, re-measurement is carried out. After the re-measurement is qualified, the correction ear plates are removed.

[0046] If the deviation is large, repeat the above operation until it is qualified. After the overall welding is completed, the sling can be removed with the help of scissors climbing vehicle or full-height bracket.

[0047] In this embodiment, after the construction of the roof steel structure is completed, the hyperbolic canopy is constructed. After the main portal of the hyperbolic canopy is hoisted into place, a temporary support is installed. The temporary support is a steel frame. The support points of the steel frame are designed according to the three-dimensional model, and the steel frame is cut and manufactured based on the support points.

[0048] Then adjust and calibrate the main portal frame. After the measurement of the main portal frame meets the requirements, weld and fix the main portal frame and the embedded plate. The adjustment method of the main portal frame is similar to the steel column construction and will not be repeated here. Hoist the curved steel beam into place, adjust and calibrate the curved steel beam and weld and fix it to the main portal frame. Then remove the temporary support and carry out the steel grid construction.

[0049] Priority is given to constructing the steel grid of the column part, and the frame is formed into a whole through the column part. After the overall frame construction is completed and the elevation of the curved point is correct, the secondary beams and curved rods are connected.

[0050] The main curtain wall and the hyperbolic glass curtain wall are constructed simultaneously. The decorative aluminum panels of the main curtain wall and the hyperbolic glass curtain wall are connected to each other and extend along the main body of the building.

[0051] 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 are within the scope of protection of the pending claims of the present invention.

Claims

1. A method for constructing a canopy of a hyperbolic glass curtain wall based on three-dimensional modeling, characterized in that: include: Step S1, measuring and setting out the exterior of the building to determine the boundary lines of the main curtain wall and the hyperbolic glass curtain wall on the building; Step S2: 3D modeling of the hyperbolic glass curtain wall is performed according to the design drawings, and steel components and glass of the canopy are cut and manufactured according to the 3D model, and each steel component and glass of the canopy is numbered; Step S3: The steel structure canopy is divided into the roof steel structure and the hyperbolic canopy. The hyperbolic canopy is hoisted as a whole after the components are assembled on the ground. First, the curved main portal of the hyperbolic canopy is hoisted, and temporary supports are set on the main portal; Step S4: After the steel structure canopy is completed, the glass is installed. The glass installation number is installed piece by piece from bottom to top. A stepped fastener-type steel pipe scaffold is set up on the canopy. Workers install the glass on the scaffold and on a boom lift. Step S5: After the floating glass is constructed to the curtain wall boundary line, the construction error of the floating glass is measured based on the curtain wall boundary line, and the size of the main curtain wall glass above the curtain wall boundary line is determined based on the construction error and cut; Step S6: Install a layer of main curtain wall glass above the curtain wall boundary line to connect the main curtain wall and the hyperbolic glass curtain wall.

2. The method for constructing a canopy of a hyperbolic glass curtain wall based on three-dimensional modeling according to claim 1, characterized in that: On the double-curved glass curtain wall, multiple decorative aluminum panels are provided to separate multiple rows of glass in the horizontal direction; After the decorative aluminum panels arrive at the site, they should be packed according to the number and then transported to the construction site. First, they should be positioned and marked to determine the horizontal and vertical positions of the aluminum panels, and then the decorative aluminum panel keel brackets should be installed on the canopy steel components. Set control points on the outer plane of the curtain wall, and generate control lines based on the control points to control the plane deviation of the decorative aluminum plate and the relative positions of each component; Use the keel-shaped bracket to adjust and fix the decorative aluminum plate. Hang the curtain wall longitudinal plane reference line from the decorative aluminum plate single plate on the top of the curtain wall. Draw a horizontal line between the two curtain wall longitudinal plane reference lines. Use the horizontal line and vertical line to determine the current construction control plane.

3. The method for constructing a canopy of a hyperbolic glass curtain wall based on three-dimensional modeling according to claim 1, characterized in that: After the glass is hoisted to the installation location, two workers coordinate and cooperate to install the glass on the keel. No less than 2 elastic positioning pads should be used at the bottom of the glass. The length of the rubber strips around the glass should be 1.5%-2% longer than the groove in the frame. After the bevel is broken, it should be assembled into the predetermined design angle and firmly bonded with adhesive before being embedded in the groove.

4. The method for constructing a canopy of a hyperbolic glass curtain wall based on three-dimensional modeling according to claim 1, characterized in that: Before the construction of the roof steel structure, the steel columns are positioned and the ear plates are welded and the embedded plates are corrected. After the steel columns are hoisted into place, the steel beams are welded and fixed. After the steel beams and steel columns are welded into one, the roof beams are constructed.

5. The method for constructing a canopy of a hyperbolic glass curtain wall based on three-dimensional modeling according to claim 4, characterized in that: After the steel column is hoisted into place, correction lugs are welded on the four sides and holes are drilled on the correction lugs. After the steel column is hoisted into place, the force is unloaded by the slings below. Theodolites are set up on two mutually perpendicular sides of the steel column for observation. Bolts are used in the holes to correct the steel structure. After the correction is completed, the steel structure positioning ear plates are welded and fixed at the four corners of the embedded plate. After the slings are completely unloaded, re-measurement is carried out. After the re-measurement is qualified, the correction ear plates are removed.

6. The method for constructing a canopy of a hyperbolic glass curtain wall based on three-dimensional modeling according to claim 4, characterized in that: After the roof steel structure is completed, the hyperbolic canopy is constructed. After the main portal frame of the hyperbolic canopy is hoisted into place, temporary supports are installed. Then the main portal frame is adjusted and calibrated. After the main portal frame is measured to meet the requirements, the main portal frame and the embedded plate are welded and fixed. The curved steel beam is hoisted into place, adjusted and corrected, and then welded to the main portal frame. The temporary support is then removed and the steel grid construction is carried out.

7. The method for constructing a canopy of a hyperbolic glass curtain wall based on three-dimensional modeling according to claim 1, characterized in that: The temporary support is a steel frame. The support points of the steel frame are designed according to the three-dimensional model, and the steel frame is cut and manufactured based on the support points.

8. The method for constructing a canopy of a hyperbolic glass curtain wall based on three-dimensional modeling according to claim 1, characterized in that: The main curtain wall and the hyperbolic glass curtain wall are constructed simultaneously. The decorative aluminum panels of the main curtain wall and the hyperbolic glass curtain wall are connected to each other and extend along the main body of the building.

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