A new installation process for modular keels of special-shaped aluminum single-panel curtain walls

Abstract

This invention discloses a novel modular keel installation process for special-shaped aluminum veneer curtain walls. The process involves decomposing and grouping the various shaped secondary keels according to the curtain wall design drawings, hot-bending the decomposed and grouped keels, fabricating a positioning and setting-out chassis, positioning and welding the shaped secondary keels, assembling the shaped secondary keels, installing the aluminum veneer panels, positioning the shaped secondary keels on the building wall, and hoisting and securing the shaped secondary keels. This invention addresses technical issues such as difficulty in locating building walls, large errors, high costs, high rework rates, low efficiency, and safety hazards associated with prolonged overhead work.

Description

Technical Field

[0001] The present invention relates to an installation process, in particular to a novel installation process for modular keels of special-shaped aluminum single-plate curtain walls. Background Art

[0002] The existing installation method of special-shaped aluminum single-panel curtain wall keels is to rely on the grid size of the drawing and then use a variety of instruments such as theodolite, level and total station to find the positioning points on the original building wall through the on-site axis and structural elevation line to mark and position them one by one. Then, the keel is placed according to each marked positioning point and welded and fixed. The installation method of the existing method has the following defects:

[0003] 1) The positioning accuracy requirement on site is relatively high, which is difficult to achieve based on existing conditions;

[0004] 2) It requires a large number of tools and instruments, and the process is complicated and difficult to operate;

[0005] 3) The error is relatively large. There are errors in the marking points based on the axis and elevation line on site. If multiple such positioning points are marked, the error will accumulate, which will easily lead to deviations in the shape of the special-shaped keel, and then make it impossible to install the aluminum plate processed according to the drawing size later;

[0006] 4) It is relatively difficult to locate points outside the building wall, and large deviations are likely to occur;

[0007] 5) Construction costs such as labor costs, time costs, and machinery costs are too high;

[0008] 6) The rework rate is high and the efficiency is low. Due to the large error, the aluminum veneer cannot be installed in the later stage, and the secondary keel needs to be readjusted or repositioned and installed;

[0009] 7) Long-term high-altitude operations bring greater construction safety risks;

[0010] 8) The construction period is long and the construction sequence is chaotic;

[0011] 9) Aluminum veneer needs to be installed on the wall according to the size of the keel, which makes construction difficult and inefficient.

[0012] Therefore, those skilled in the art are committed to providing a new modular keel installation process for special-shaped aluminum single-plate curtain walls that can effectively solve the above-mentioned defects. Summary of the Invention

[0013] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to provide a new modular keel installation process for special-shaped aluminum single plate curtain wall that can effectively solve the above-mentioned defects.

[0014] To achieve the above object, the present invention provides a novel modular keel installation process for special-shaped aluminum veneer curtain wall, comprising the following steps:

[0015] S1: Decompose and group the secondary keels of various shapes according to the curtain wall design drawings, and perform hot bending on the decomposed and grouped secondary keels of various shapes;

[0016] S2: Production and processing positioning and setting out the chassis;

[0017] S3: Position and weld the secondary keel;

[0018] S4: Assemble the modeling secondary keel;

[0019] S5: Install the aluminum veneer;

[0020] S6: Position the modeling secondary keel on the building wall;

[0021] S7: Hoist and fix the shaped secondary keel.

[0022] Preferably, in S1, the specific method of decomposing and grouping the various shapes according to the curtain wall design drawings is as follows:

[0023] S1a: First, decompose and number each secondary keel according to the curtain wall design drawing and the secondary keel layout drawing;

[0024] S1b: Measure the arc length, chord length and radius of each secondary keel that makes up the shape according to the dimensions on the drawing;

[0025] S1c: Cut out the secondary keel of corresponding length according to the arc length.

[0026] Preferably, in S1, the thick hot-dip galvanized steel rectangular tubes used as secondary keels are subjected to hot bending processing according to the above parameters so as to be bent into corresponding arcs. Each shape is a group, including two layers of front and rear side keels and two layers of front and rear grid keels.

[0027] Preferably, in S2, a flat crisscross-shaped chassis is formed by welding hot-dip galvanized steel rectangular tubes, and the size of the crisscross-shaped chassis is determined according to the size of the secondary keel.

[0028] Preferably, in S3, the specific steps of positioning welding the shaped secondary keel are as follows:

[0029] S3a: Use the well-shaped chassis to lay out and position the special-shaped keel;

[0030] S3b: Weld and assemble the various components of the shape.

[0031] Preferably, in said S3a, when performing the lofting and positioning, first place a side keel of the shape that has been hot-bent according to the corresponding curvature and length of the drawing in a suitable position, then draw the same 50*50mm grid line at the position of the corresponding shape on the drawing for lofting, and then mark it on the welded well-shaped chassis to determine the accurate relative positions of the remaining side keels and the grid keels of the shape;

[0032] In the above-mentioned S3b, when welding, first fix one of the side keels on the crisscross-shaped chassis according to the marked point, and then find the position where the other shape outline keel contacts the first shape secondary keel and the angle that needs to be cut at the interface according to the position of the shape on the grid line in the drawing, and then find the position point where the other shape outline keel intersects with the grid, and use these two points to determine the relatively accurate position of the second keel, and then weld and fix it, and so on, weld and fix the entire shape.

[0033] Preferably, in S4, the specific steps of assembling the shaped secondary keel are as follows:

[0034] In addition to making the front surface shaping secondary keel, a rear row shaping secondary keel identical to the front surface shaping secondary keel is also made. The manufacturing method of the rear row shaping secondary keel is the same as above.

[0035] Then, according to the requirements of the drawings of the aluminum veneer divisions on the side of the shape, vertical supporting keels are welded at the intersection of each division keel and the outer keel, and oblique supporting keels are added between each vertical supporting keel. If the length of the oblique supporting keel between two vertical supporting keels exceeds 1200mm, another vertical supporting keel needs to be added between the two vertical supporting keels; before welding each oblique supporting keel, its bevel cut angle must be determined according to its specific position, and the two ends to be welded must be beveled according to the specific position before full welding and fixing can be performed. Similarly, after the welding of all the inner and outer keels of the shape and all the vertical supporting keels and oblique supporting keels is completed, the next step can be performed.

[0036] Preferably, in S5, the specific steps of installing the aluminum veneer are as follows:

[0037] S5a: Compare the aluminum veneer numbering according to the material drawing with the finished secondary keel. After confirming that it is the aluminum veneer used in this location, select the appropriate keel shape position according to the shape of the aluminum veneer.

[0038] S5b: Fix the aluminum veneer to the frame. The fixing method is to first strictly buckle the aluminum veneer on the corresponding secondary keel frame, and then place rubber insulation pads at the corresponding aluminum veneer corner code position;

[0039] S5c: Fix the angle code of the aluminum veneer to the secondary keel; then install the second adjacent aluminum veneer, with the angle code of the second aluminum veneer offset from the angle code of the previous aluminum veneer.

[0040] Preferably, in S6, the specific steps of positioning the shaped secondary keel on the building wall are as follows:

[0041] S6a: First determine the position of a shape’s endpoint in the drawing;

[0042] S6b: Using the building axes on the left and right sides of the shape as reference lines, measure the horizontal position of the endpoints from the axes based on the positions of the endpoints in the design drawings.

[0043] S6c: Pay out the line at this horizontal position;

[0044] S6d: Using the on-site structural elevation line as a reference line, measure the distance between the endpoint and the on-site elevation line and then lay out the line. The point where the two lines intersect is the actual location of the point on site. Mark the point and weld a hot-dip galvanized steel keel perpendicular to the wall.

[0045] S6e: Use the above steps to find the location of the other end point of the shape and weld another hot-dip galvanized steel keel perpendicular to the building wall as a temporary supporting steel member. Similarly, find the actual location of the remaining shapes on site and weld keels to mark them.

[0046] Preferably, in S7, the hoisting and fixing of the shaped secondary keel includes the following steps:

[0047] S7a: Use lifting equipment to hoist it, and tie two traction ropes at both ends of the lower part of the shape to guide the running trajectory of the shape's secondary keel;

[0048] S7b: After the lifting equipment has lifted the shaped secondary keel to a suitable position, the lifting equipment stops operating;

[0049] S7c: Untie the hook and temporarily fix the secondary keel with steel wire rope;

[0050] S7d: Use metal zippers to accurately adjust the position of the secondary keel;

[0051] S7e: After the calibration is completed, the shaped secondary keel is welded to the previously installed main keel using a full weld method according to the drawing requirements; this completes the hoisting and fixing of the single shaped secondary keel;

[0052] S7f: Repeat the above steps to complete the hoisting and fixing of the remaining secondary keels on the work surface.

[0053] The beneficial effects of the present invention are: by using the installation process of the present invention, the following technical effects can be achieved:

[0054] 1) It solves the problem of difficult positioning on building walls and high precision requirements.

[0055] 2) It reduces the dependence on various instruments, simplifies the construction process and reduces the difficulty of operation.

[0056] 3) Improved the accuracy of modeling and minimized errors.

[0057] 4) It avoids the trouble of finding multiple positioning coordinates on building walls and in the air.

[0058] 5) Reduced various construction costs such as labor, machinery, and time.

[0059] 6) Effectively improve installation efficiency and accuracy.

[0060] 7) It can significantly reduce the workload of high-altitude operations and reduce safety production risks from the source.

[0061] 8) Greatly shortened the construction period and simplified the cumbersome construction steps.

[0062] 9) Aluminum veneer can be directly installed on the ground on the processed shaped secondary keel, which not only facilitates the construction but also greatly improves the efficiency of aluminum plate installation. DETAILED DESCRIPTION

[0063] The present invention will be further described below in conjunction with embodiment:

[0064] In the description of the present invention, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating directions or positional relationships, are intended solely to facilitate description and simplify the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0065] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances. Example

[0066] A novel modular keel installation process for special-shaped aluminum veneer curtain wall includes the following steps:

[0067] S1: Decompose and group the secondary keels of various shapes according to the curtain wall design drawings, and perform hot bending on the decomposed and grouped secondary keels of various shapes;

[0068] The specific method of decomposing and grouping each shape according to the curtain wall design drawings is as follows:

[0069] S1a: First, decompose and number each secondary keel according to the curtain wall design drawing and the secondary keel layout drawing;

[0070] S1b: Measure the arc length, chord length and radius of each secondary purlin that makes up the shape according to the dimensions on the drawing; S1c: Cut the secondary purlins of the shape to the corresponding length according to the arc length.

[0071] S2: Production and processing positioning and setting out the chassis;

[0072] S3: Position and weld the secondary keel;

[0073] The specific steps for positioning welding of the shaped secondary keel are as follows:

[0074] S3a: Use the well-shaped chassis to lay out and position the special-shaped keel;

[0075] S3b: Weld and assemble the various components of the shape.

[0076] Preferably, in said S3a, when performing the lofting and positioning, first place a side keel of the shape that has been hot-bent according to the corresponding curvature and length of the drawing in a suitable position, then draw the same 50*50mm grid line at the position of the corresponding shape on the drawing for lofting, and then mark it on the welded well-shaped chassis to determine the accurate relative positions of the remaining side keels and the grid keels of the shape;

[0077] In the above-mentioned S3b, when welding, first fix one of the side keels on the crisscross-shaped chassis according to the marked point, and then find the position where the other shape outline keel contacts the first shape secondary keel and the angle that needs to be cut at the interface according to the position of the shape on the grid line in the drawing, and then find the position point where the other shape outline keel intersects with the grid, and use these two points to determine the relatively accurate position of the second keel, and then weld and fix it, and so on, weld and fix the entire shape.

[0078] S4: Assemble the modeling secondary keel;

[0079] The specific steps for assembling the shaped secondary keel are as follows:

[0080] In addition to making the front surface shaping secondary keel, a rear row shaping secondary keel identical to the front surface shaping secondary keel is also made. The manufacturing method of the rear row shaping secondary keel is the same as above.

[0081] Then, according to the requirements of the drawings of the aluminum veneer divisions on the side of the shape, vertical supporting keels are welded at the intersection of each division keel and the outer keel, and oblique supporting keels are added between each vertical supporting keel. If the length of the oblique supporting keel between two vertical supporting keels exceeds 1200mm, another vertical supporting keel needs to be added between the two vertical supporting keels; before welding each oblique supporting keel, its bevel cut angle must be determined according to its specific position, and the two ends to be welded must be beveled according to the specific position before full welding and fixing can be performed. Similarly, after the welding of all the inner and outer keels of the shape and all the vertical supporting keels and oblique supporting keels is completed, the next step can be performed.

[0082] S5: Install the aluminum veneer;

[0083] S5a: Compare the aluminum veneer numbering according to the material drawing with the finished secondary keel. After confirming that it is the aluminum veneer used in this location, select the appropriate keel shape position according to the shape of the aluminum veneer.

[0084] S5b: Fix the aluminum veneer to the frame. The fixing method is to first strictly buckle the aluminum veneer on the corresponding secondary keel frame, and then place rubber insulation pads at the corresponding aluminum veneer corner code position;

[0085] S5c: Fix the angle code of the aluminum veneer to the secondary keel; then install the second adjacent aluminum veneer, with the angle code of the second aluminum veneer offset from the angle code of the previous aluminum veneer.

[0086] S6: Position the modeling secondary keel on the building wall;

[0087] S6a: First determine the position of a shape’s endpoint in the drawing;

[0088] S6b: Using the building axes on the left and right sides of the shape as reference lines, measure the horizontal position of the endpoints from the axes based on the positions of the endpoints in the design drawings.

[0089] S6c: Pay out the line at this horizontal position;

[0090] S6d: Using the on-site structural elevation line as a reference line, measure the distance between the endpoint and the on-site elevation line and then lay out the line. The point where the two lines intersect is the actual location of the point on site. Mark the point and weld a hot-dip galvanized steel keel perpendicular to the wall.

[0091] S6e: Use the above steps to find the location of the other end point of the shape and weld another hot-dip galvanized steel keel perpendicular to the building wall as a temporary supporting steel member. Similarly, find the actual location of the remaining shapes on site and weld keels to mark them.

[0092] S7: Hoist and fix the shaped secondary keel.

[0093] S7a: Use lifting equipment to hoist it, and tie two traction ropes at both ends of the lower part of the shape to guide the running trajectory of the shape's secondary keel;

[0094] S7b: After the lifting equipment has lifted the shaped secondary keel to a suitable position, the lifting equipment stops operating;

[0095] S7c: Untie the hook and temporarily fix the secondary keel with steel wire rope;

[0096] S7d: Use metal zippers to accurately adjust the position of the secondary keel;

[0097] S7e: After the calibration is completed, the shaped secondary keel is welded to the previously installed main keel using a full weld method according to the drawing requirements; this completes the hoisting and fixing of the single shaped secondary keel;

[0098] S7f: Repeat the above steps to complete the hoisting and fixing of the remaining secondary keels on the work surface. Example

[0099] A novel modular keel installation process for special-shaped aluminum veneer curtain wall includes the following steps:

[0100] S1: Decompose and group the secondary keels of various shapes according to the curtain wall design drawings, and perform hot bending on the decomposed and grouped secondary keels of various shapes;

[0101] S2: Production and processing positioning and setting out the chassis;

[0102] S3: Position and weld the secondary keel;

[0103] S4: Assemble the modeling secondary keel;

[0104] S5: Install the aluminum veneer;

[0105] S6: Position the modeling secondary keel on the building wall;

[0106] S7: Hoist and fix the shaped secondary keel.

[0107] S7a: Use lifting equipment to hoist it, and tie two traction ropes at both ends of the lower part of the shape to guide the running trajectory of the shape's secondary keel;

[0108] S7b: After the lifting equipment has lifted the shaped secondary keel to a suitable position, the lifting equipment stops operating;

[0109] S7c: Untie the hook and temporarily fix the secondary keel with steel wire rope;

[0110] S7d: Use metal zippers to accurately adjust the position of the secondary keel;

[0111] S7e: After the calibration is completed, the shaped secondary keel is welded to the previously installed main keel using a full weld method according to the drawing requirements; this completes the hoisting and fixing of the single shaped secondary keel;

[0112] S7f: Repeat the above steps to complete the hoisting and fixing of the remaining secondary keels on the work surface. Example

[0113] A novel modular keel installation process for special-shaped aluminum veneer curtain wall includes the following steps:

[0114] S1: Each secondary purlin is grouped according to the curtain wall design drawings and then hot-bent. Specifically, each secondary purlin is carefully broken down and numbered according to the curtain wall design drawings (elevation) and the secondary purlin layout. The arc length, chord length, and radius of each secondary purlin are then accurately measured based on the dimensions on the drawings. The secondary purlins are then cut to the appropriate length based on the arc length. The 60*40*4mm thick hot-dip galvanized steel rectangular tubing used as the secondary purlins is then hot-bent to the corresponding arcs according to these parameters. Each purlin is grouped and includes the secondary purlins (edge purlins and grid purlins) on both the front and back layers.

[0115] S2: Fabrication and processing of the positioning and setting-out chassis. Specifically, the process involves first finding a large, open area that is as flat as possible. A flat, 50*50mm, crisscross-shaped chassis is then welded together using 60*40*4mm thick hot-dip galvanized steel rectangular tubes. The size of the crisscross-shaped chassis is determined by the size of the secondary keel to be molded, and the specific size must be sufficient to accommodate the entire secondary keel. The steel square tube chassis is used to control the flatness and precision of the secondary keel machining performed later. The crisscross-shaped chassis (steel chassis) in this embodiment is reusable.

[0116] S3: Position and weld the shaped secondary purlins. This involves using a 50*50mm crisscross grid base (crisscross base) to lay out and position the shaped secondary purlins. First, place one of the side purlins, which has been hot-bent according to the corresponding curvature and length on the drawing, in the appropriate position. Then, draw the same 50*50mm grid lines on the drawing for the corresponding position. Mark the welded crisscross base to determine the exact relative positions of the remaining side purlins and grid purlins. The various components of the shape are then welded and assembled. When welding, first fix one of the side purlins on the tic-tac-toe grid frame according to the marked point, and then find the position where the other side purlin contacts the first side purlin and the angle that needs to be cut at the interface according to the position of the grid line of the shape in the drawing. Secondly, find the position where the other secondary purlin of the shape intersects with the grid, and use these two points to determine the relatively accurate position of the second secondary purlin of the shape, and then weld and fix it; and so on, weld and fix the entire shape.

[0117] S4: Assemble the modeling secondary keels. Specifically, according to the requirements of the design drawings, the thickness of each modeling is 700mm. Therefore, in addition to making the front surface modeling secondary keel, a rear modeling secondary keel that is exactly the same as the front surface modeling secondary keel must be processed. The production method is the same as above.

[0118] Then, according to the requirements of the drawings of the aluminum veneer grid on the side of the model, a 565mm long vertical support keel is welded at the intersection of each grid keel and the outer keel. Where there is a junction of the grid keels in the middle of the model or where the length of a single keel exceeds 1200mm, a 565mm long vertical support keel is also required. When the vertical support keels connect the two model steel frames, they are all flat-end full welded, and the weld height shall not be less than 4mm. After the vertical support keels are welded, considering the overall stability of the two frames and the subsequent hoisting, diagonal support keels need to be added between all vertical support keels. The length of the vertical support keels shall not exceed 1200mm. If the length of the diagonal support keel between two vertical support keels exceeds 1200mm, another vertical support keel shall be added between the two vertical support keels.

[0119] All vertical and diagonal support purlins are made from the same material as the secondary purlins: 60*40*4mm thick hot-dip galvanized steel rectangular tubing. All support purlins are welded inline. Before welding, the bevel cut angle of each diagonal support purlin must be determined based on its specific location. Bevel cuts must be made at both ends before full welding. Similarly, all internal and external purlins, as well as all vertical and diagonal support purlins, must be welded to the required specifications before proceeding to the next step. If space is limited, it is possible to assemble several purlins using the above steps before proceeding to the next step.

[0120] S5: Install the aluminum veneer; after the assembly and welding of the secondary keel is completed, the surface aluminum veneer can be installed according to the drawing dimensions. The specific installation steps are as follows:

[0121] First, the aluminum veneer is compared with the processed secondary keel according to the layout numbering of the raw material drawing. After confirming that it is the aluminum veneer used in the place, the appropriate secondary keel shape position is selected according to the different shapes of the aluminum veneer. The aluminum veneer is fixed to the skeleton. The fixing method is to first strictly buckle the aluminum veneer on the corresponding secondary keel skeleton, and then place a 2mm thick rubber insulation pad at the corresponding aluminum veneer angle code position to prevent the aluminum veneer and the steel keel from directly contacting and thus causing mutual corrosion. Then, a mechanical tool such as an electric drill is used to fix the self-drilling screws to the secondary keel through the aluminum veneer angle code. Then, the adjacent second aluminum veneer is installed. The angle code position of the second aluminum veneer must be misaligned with the angle code of the previous aluminum veneer, otherwise it will affect the flatness of the overall aluminum veneer shape. In the present embodiment, the distance between the lower end of the aluminum veneer hem and the secondary keel skeleton is 5mm.

[0122] S6: Positioning the secondary keel on the building wall; specifically, first determining the position of the endpoint of a shape in the drawing, then using a measuring instrument such as a theodolite, level, or total station, using the building axes on the left and right sides of the shape as reference lines, and combining the position of the endpoint in the design drawing to measure its horizontal position from the axis, and then setting out the line at that position; then using the on-site structure elevation line as a reference line, measuring the position of the endpoint from the on-site elevation line and then setting out the line;

[0123] The point where the two lines intersect is the actual on-site location of that point. This point is then marked and welded perpendicularly to the wall with a 700mm-long 80*60*5mm hot-dip galvanized steel keel. This facilitates temporary securing of the unwelded framing during later hoisting. This method is then used to locate the other endpoint of the framing and weld another 700mm-long 80*60*5mm hot-dip galvanized steel keel perpendicularly to the building wall as a temporary support steel member. This process is repeated to locate the actual on-site locations of the remaining framing elements and weld a small section of secondary keel to mark them. This process requires the coordination of multiple workers, along with the use of construction machinery such as lifts and scaffolding, as well as external high-altitude work arrangements.

[0124] S7: Lift and secure the secondary keel. Specifically, the keel is hoisted using a wheeled truck crane. The specific steps are as follows: First, move the truck crane to the appropriate position. Ideally, the crane arm should be fully extended to cover the entire construction surface. Then, extend the corresponding outriggers and secure them with 200mm thick timber padding. After the truck crane is secured, two professionals are assigned to direct the crane arm's trajectory and position. Once the crane arm reaches the desired secondary keel, a 10-ton sling is used to secure the front and rear sides of the keel, connecting them together as a single unit. Prior to lifting, two traction ropes are attached to each end of the lower section of the keel to guide its trajectory and prevent twisting during the lifting process. Once the crane has secured the secondary keel, it is stopped. Professional construction personnel then remove the hooks and temporarily secure the keel with wire rope. After securing, the truck crane arm is withdrawn from its position, and professional construction workers use metal zippers to precisely calibrate the position of the secondary keel. Once this calibration is complete, the secondary keel is fully welded to the previously installed primary keel according to the drawing requirements. This completes the hoisting and securing of a single secondary keel. Repeat these steps to complete the hoisting and securing of the remaining secondary keels on the work surface. Only after acceptance by all parties can the next construction step be carried out.

[0125] The above describes in detail the preferred embodiments of the present invention. It should be understood that those skilled in the art can make numerous modifications and variations based on the concepts of the present invention without inventive effort. Therefore, any technical solutions that can be derived by those skilled in the art through logical analysis, reasoning, or limited experimentation based on the concepts of the present invention and the prior art should be within the scope of protection defined by the claims.

Claims

1. A new modular keel installation process for special-shaped aluminum veneer curtain walls, characterized by: The following steps are involved: S1: Decompose and group the secondary keels of various shapes according to the curtain wall design drawings, and perform hot bending on the decomposed and grouped secondary keels of various shapes; The specific method of decomposing and grouping each shape according to the curtain wall design drawings is as follows: S1a: First, decompose and number each secondary keel according to the curtain wall design drawing and the secondary keel layout drawing; S1b: Measure the arc length, chord length and radius of each secondary keel that makes up the shape according to the dimensions on the drawing; S1c: Cut out the secondary keel of corresponding length according to the arc length; S2: Manufacturing and processing positioning and setting out the chassis; S3: Position and weld the secondary keel; S4: Assemble the modeling secondary keel; S5: Install the aluminum veneer; S6: Position the modeling secondary keel on the building wall; S7: Hoist and fix the shaped secondary keel; In the step S2, a flat 50*50mm crisscross-shaped chassis is formed by welding 60*40*4mm thick hot-dip galvanized steel rectangular tubes. The size of the crisscross-shaped chassis is determined by the size of the secondary keel. In S3, the specific steps of positioning welding the shaped secondary keel are as follows: S3a: Use the well-shaped chassis to lay out and position the special-shaped keel; S3b: Weld and assemble the various components of the model; In said S3a, when performing the lofting and positioning, first place a side keel of the shape that has been hot-bent according to the corresponding curvature and length of the drawing in a suitable position, then draw the same 50*50mm grid line at the position of the corresponding shape on the drawing for lofting, and then mark it on the welded well-shaped chassis to determine the accurate relative positions of the remaining side keels and the grid keels of the shape; In the above S3b, when welding, first fix one of the side keels on the crisscross base frame according to the marked point, and then find the position where the other side keel of the shape contacts the first side keel of the shape according to the position of the grid line of the drawing, and the angle that needs to be cut at the interface, and then find the position where the other side keel of the shape intersects with the grid, and use these two points to determine the relative accurate position of the second keel, and then weld and fix it, and so on, until the entire shape is welded and fixed; In S4, the specific steps of assembling the shaped secondary keel are as follows: In addition to making the front surface shaping secondary keel, a rear row shaping secondary keel identical to the front surface shaping secondary keel is also made. The manufacturing method of the rear row shaping secondary keel is the same as above. Then, according to the requirements of the drawings of the aluminum veneer divisions on the side of the shape, vertical supporting keels are welded at the intersection of each division keel and the outer keel, and oblique supporting keels are added between each vertical supporting keel. If the length of the oblique supporting keel between two vertical supporting keels exceeds 1200mm, another vertical supporting keel needs to be added between the two vertical supporting keels; before welding each oblique supporting keel, its bevel cut angle must be determined according to its specific position, and the two ends to be welded must be beveled according to the specific position before full welding and fixing can be performed. Similarly, after the welding of all the inner and outer keels of the shape and all the vertical supporting keels and oblique supporting keels is completed, the next step can be performed.

2. The novel modular keel installation process for special-shaped aluminum veneer curtain wall according to claim 1 is characterized by: In S5, the specific steps of installing the aluminum veneer are as follows: S5a: Compare the aluminum veneer numbering according to the material drawing with the finished secondary keel. After confirming that it is the aluminum veneer used in this location, select the appropriate keel shape position according to the shape of the aluminum veneer. S5b: Fix the aluminum veneer to the frame. The fixing method is to first strictly buckle the aluminum veneer on the corresponding secondary keel frame, and then place rubber insulation pads at the corresponding aluminum veneer corner code position; S5c: Fix the angle code of the aluminum veneer to the secondary keel; then install the second adjacent aluminum veneer, with the angle code of the second aluminum veneer offset from the angle code of the previous aluminum veneer.

3. The novel modular keel installation process for special-shaped aluminum veneer curtain wall according to claim 2 is characterized by: In S6, the specific steps for positioning the shaped secondary keel on the building wall are as follows: S6a: First determine the position of a shape’s endpoint in the drawing; S6b: Using the building axes on the left and right sides of the shape as reference lines, measure the horizontal position of the endpoints from the axes based on the positions of the endpoints in the design drawings. S6c: Pay out the line at this horizontal position; S6d: Using the on-site structural elevation line as a reference line, measure the distance between the endpoint and the on-site elevation line and then lay out the line. The point where the two lines intersect is the actual location of the point on site. Mark the point and weld a hot-dip galvanized steel keel perpendicular to the wall. S6e: Use the above steps to find the location of the other end point of the shape and weld another hot-dip galvanized steel keel perpendicular to the building wall as a temporary supporting steel member. Similarly, find the actual location of the remaining shapes on site and weld keels to mark them.