ALC opening outer wall panel assembly construction method

Abstract

The application discloses an ALC hole opening outer wall plate assembled construction method, relates to the technical field of fabricated wall construction, has the advantages of installing hole opening ALC wall plates in a system, and has the technical scheme as follows: S1, starting from one end of the window wall surface, vertically installing the ALC wall plates block by block until reaching the window wall position on one side of the window hole; S2, installing the window hole side window ALC wall plate; S3, vertically installing the window sill ALC wall plate block by block in the gap between the window hole lower side and the window ALC wall plates on both sides, the lower end of each window sill ALC wall plate is located on the window wall lower surface, and the upper end is temporarily fixed to the flat steel on the window ALC wall plates on both sides through the flat steel; S4, installing the window hole other side window ALC wall plate; and S5, continuing to vertically install the ALC wall plates block by block from the window hole other side window ALC wall plate until reaching the other end of the window wall surface.

Description

Technical Field

[0001] This invention relates to the field of prefabricated wall construction technology, specifically to a method for assembling exterior wall panels for ALC openings. Background Technology

[0002] Autoclaved aerated concrete (ALC) wall panels have advantages such as light weight, thermal insulation, good fire resistance, and fast construction speed, and have been widely used in the exterior wall envelope of prefabricated buildings. ALC wall panels are constructed using a factory prefabrication and on-site assembly method, which can effectively improve construction efficiency and shorten the construction period.

[0003] CN121611238B discloses a combined ALC window opening exterior wall structure and construction method, including several sets of adjustable connection components, several limiting and blocking components and at least one ALC wall panel. By completing the pre-treatment work such as rebar installation and flat steel welding of the ALC wall panel on the ground in advance, the content and time of high-altitude operations are reduced to the greatest extent.

[0004] However, the lack of a systematic wall panel installation sequence has resulted in the ineffective resolution of issues related to deformation and stress release after wall panel installation. Summary of the Invention

[0005] The purpose of this invention is to provide a method for assembling ALC opening exterior wall panels, which has the advantage of systematically installing ALC opening wall panels.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: This invention provides an assembly construction method for ALC opening exterior wall panels. The ALC wall panels include two vertically installed inter-window ALC wall panels, several vertically installed under-window ALC wall panels, and several vertical ALC wall panels located on the side of the inter-window ALC wall panels away from the window opening. Install the ALC wall panels in the following order: S1, starting from one end of the wall between the windows, install the vertical ALC wall panels one by one until you reach the wall between the windows on one side of the window opening; S2, Install the ALC wall panel between the windows on one side of the window opening; S3, install the ALC wall panels under the window vertically one by one in the gap between the ALC wall panels under the window opening and between the two windows. The lower end of each ALC wall panel under the window rests on the wall surface under the window, and the upper end is temporarily fixed to the flat steel on the ALC wall panels between the two windows by flat steel. The flat steel at the upper end of the two adjacent ALC wall panels under the window is also temporarily fixed. S4, Install the ALC wall panel between the windows on the other side of the window opening; S5. Continue installing vertical ALC wall panels one by one from the ALC wall panel on the other side of the window opening until the other end of the window wall is reached. During the above installation process, two adjacent ALC wall panels are inserted into each other by a groove and a boss, and adhesive is applied to the contact surface of the groove and the boss for bonding. After pressing, the panel gap width is controlled by a panel gap width control device to make the panel gap width 2-5mm. At this time, the side of the ALC wall panel facing the window opening will have a groove and a flat steel bar arranged along its length. The length of the groove is the height of the ALC wall panel below the window. The flat steel bar is centrally located in the middle of this side, and the groove is located on the side of the flat steel bar closer to the interior. The protrusion of the side of the ALC wall panel below the window facing the ALC wall panel between the windows enters the groove. A 20mm±5mm gap is reserved between the bottom of each ALC wall panel and the wall surface under the window. Wooden wedges are used for temporary fixation. After the wall panel has been left to stand for no less than 7 days, the wooden wedges are removed and the gap is filled tightly. Then, the flat steel at the top of the ALC wall panel under the window is fully welded and fixed to the flat steel on the ALC wall panels on both sides of the window. The flat steel at the top of the adjacent ALC wall panels under the window is also fully welded and fixed. A 20mm±5mm gap is left between the top of each ALC wall panel and the wall surface of the window sill, and the gap is filled tightly after the wooden wedges are removed.

[0007] By adopting the above technical solution and using a unidirectional flow installation sequence from left to right (or right to left), the assembly direction of the entire wall remains singular and continuous, reducing the problem of not being able to close the middle section when installing in both directions. By setting a continuous flat steel (centered) and a groove (off-center to the interior side) on the side of the ALC wall panel facing the window opening, and with the length of the groove being only equal to the height of the ALC wall panel below the window, the staggered arrangement of the reinforcement (flat steel) and the splicing structure (groove) on the same side is achieved. The centered placement of the flat steel ensures balanced stress, and the flat steel and groove on the same side ensure both the reinforcement strength at the window opening and reliable splicing between the wall panels. When installing ALC wall panels, leave a 20mm gap at both the top and bottom. The bottom is temporarily fixed with wooden wedges. After installation, allow the wall panels to stand for at least 7 days to allow them to fully settle and release stress under their own weight before removing the wooden wedges and filling them tightly. This time interval allows the ALC wall panels to complete creep and stress release without interference, effectively reducing the sinking of the ALC wall panels caused by premature removal of wooden wedges, eliminating the cumulative effect of structural deformation caused by construction loads, and ensuring the long-term stability of the wall after installation. The joint width control device adjusts the length of the extension plate into the joint, keeping the joint width within the range of 2-5mm. Simultaneously, the installation is complete when the sidewall of the wall panel to be installed contacts the inclined surface of the extension plate, providing clear physical feedback that the panel cannot be pushed, making the judgment intuitive and reliable. This device is detachable and reusable, leaving no residue in the joint and not affecting subsequent adhesive filling, effectively ensuring a uniform and full joint, and improving the integrity and sealing of the wall. The three-stage process of temporarily fixing the ALC wall panel under the window, allowing it to settle, and then fully welding it in place ensures that the weight of the ALC wall panel under the window is entirely supported by the bottom wooden wedges during the settling period. Only after the settlement is completed is it welded with flat steel to form an integral load-bearing frame with the ALC wall panels between the windows on both sides. This process not only ensures that the settlement and stress release of the wall panel itself are unrestricted, but also achieves a reliable connection between the ALC wall panel under the window and the ALC wall panel between the windows. It also reduces the risk of shear failure of the welded joints during the settlement process and improves the structural safety and durability of the window opening area. The ALC wall panel under the window is vertically installed in the gap between the ALC wall panels on both sides of the window. The upper end is fixed to the flat steel on the ALC wall panels on both sides of the window by welding flat steel, so that the ALC wall panel under the window and the ALC wall panel between the window form an integral load-bearing frame. The welded connection of flat steel ensures the stiffness of the node, so that the ALC wall panel under the window is not just a passive filling, but actively participates in the overall load-bearing of the wall, jointly resisting horizontal loads such as wind pressure and earthquakes, thereby improving the seismic performance and structural safety of the window opening.

[0008] Preferably, the following step is performed before S1: The first step is to draw the exterior wall panel layout and rebar installation diagram based on the ALC wall panel construction drawings, and determine the size of each ALC wall panel and the location of the rebar installation at each window opening. The second step is to drill holes in the ALC wall panel at the window opening in the ground processing area according to the rebar installation diagram, insert the threaded rebar into the holes and fix it with rebar adhesive. The threaded rebar is arranged alternately along the length of the wall panel. The third step is to insert the flat steel into the inside of the fixed threaded steel bar, so that the flat steel is in contact with the surface of the wall panel, and then weld the flat steel to the threaded steel bar to form an integral reinforced wall panel. The fourth step is to install continuous angle steel on the upper and lower ends of the window pier near the outer wall, and fix the ends of the continuous angle steel to the reinforced concrete structure with expansion bolts.

[0009] Preferably, each of the above-mentioned ALC wall panels is connected and fixed to a continuous angle steel using hook bolts; The ALC wall panel between the windows is installed on the left and right sides of the window opening, and its upper and lower ends are respectively welded and fixed to the continuous angle steel at the upper and lower ends of the window wall by flat steel. The ALC wall panel below the window opening is installed between the two ALC wall panels between the windows, and its upper end is welded and fixed to the flat steel on the ALC wall panels on both sides by flat steel on its own as a window sill capping. The vertical ALC wall panel has pipe clamps installed at its upper and lower ends, and the pipe clamps at both ends are welded and fixed to the continuous angle steel on the upper and lower surfaces of the window wall, or the pipe clamps are anchored to the wall surface of the window wall by nails. Pipe clamps are also installed at the lower end of the ALC wall panel under the window, and the installation method of the pipe clamps is the same as that of the vertical ALC wall panel.

[0010] Preferably, the gap between the upper end of each ALC wall panel and the wall surface of the window sill is filled sequentially from the inside to the outside with a mortar layer, a PU foam layer, a PE rod layer, and a weather-resistant adhesive layer.

[0011] Preferably, the gap between the lower end of each ALC wall panel and the lower wall surface of the window sill is filled sequentially from the interior to the exterior with mortar layer two, PE rod layer two, and weather-resistant adhesive layer two.

[0012] Preferably, the plate gap width control device includes: Mounting plate, which is detachably fixed to the surface of the installed ALC wall panel by fasteners; An extension plate is provided on the mounting plate and extends towards the joint between two adjacent ALC wall panels. One side of the extension plate is close to the side wall of the installed ALC wall panel, and the opposite side of the extension plate is provided with an inclined surface. The extension plate and the mounting plate are slidably engaged, and the extension plate can slide relative to the mounting plate in a direction close to or away from the plate seam. The extension plate is provided with screws, and the mounting plate has an oblong hole for the screws to pass through. By moving the screws to different positions in the oblong hole, the length of the extension plate extending into the plate gap can be adjusted to control the width of the plate gap. When the ALC wall panel to be installed is pushed toward the already installed ALC wall panel, the side wall of the ALC wall panel to be installed comes into contact with the inclined surface, which means that the ALC wall panel to be installed is in place.

[0013] Preferably, there are multiple mounting plates, each of which is distributed vertically and horizontally on the surface of the installed ALC wall panel, and the angle between the inclined surface and the length direction of the extension plate is 30° to 45°.

[0014] Preferably, the surface of the extension plate is coated with a release agent or an anti-sticking film, and the fixing component is a vacuum suction cup, which is adsorbed onto the surface of the installed ALC wall panel.

[0015] Preferably, the steps for controlling the joint between two adjacent ALC wall panels are as follows: The first step is to fix the mounting plate to the surface of the installed ALC wall panel using fasteners, so that the extension plate extends into the gap between the side wall of the installed ALC wall panel and the second ALC wall panel to be installed. The second step is to adjust the position of the screws on the mounting plate in the oblong hole according to the target gap width, fix the extension plate to the mounting plate with the screws, and adjust the length of the extension plate extending into the gap. The third step is to push the ALC wall panel to be installed toward the already installed ALC wall panel until the side wall of the ALC wall panel to be installed abuts against the inclined surface of the extension plate. Fourth step, remove the fasteners and take the mounting plate and the extension plate out of the plate seam; Fifth step: Fill the gaps in the boards with adhesive.

[0016] Preferably, after the fifth step of installation, the stabilization period is more than one week. Then, alkali-resistant fiberglass mesh is bonded to the board seam to prevent cracking. The width of the alkali-resistant fiberglass mesh shall not be less than 300mm and it shall be set in the center along the board seam.

[0017] The beneficial effects of this invention are as follows: 1. The installation sequence is carried out in a unidirectional flow from left to right (or from right to left), so that the assembly direction of the entire wall remains single and continuous, reducing the problem of not being able to close the middle when installing in two directions; 2. By setting a continuous flat steel bar (centered) and a groove (off the interior side) on the side of the ALC wall panel facing the window opening, the flat steel bar and groove on the same side not only ensure the reinforcement strength of the window opening, but also realize the reliable splicing between the wall panels. 3. Use a board gap width control device to adjust the length of the extension board into the board gap, and control the board gap width within the range of 2 to 5 mm; 4. The three-stage process of temporarily fixing the ALC wall panel under the window, allowing it to settle, and then fully welding it in place reduces the risk of shear failure of the welded joints during the settlement process and improves the structural safety and durability of the window opening. 5. The ALC wall panel under the window is installed vertically in the gap between the ALC wall panels on both sides of the window. The upper end is fixed to the flat steel on the ALC wall panel on both sides of the window by welding flat steel, so that the ALC wall panel under the window and the ALC wall panel between the window form an integral load-bearing frame. Attached Figure Description

[0018] 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, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of this embodiment; Figure 2 for Figure 1 Enlarged structural diagram of section A in the middle; Figure 3 This is a structural schematic diagram illustrating the ALC wall panel between windows in this embodiment; Figure 4 This is a structural schematic diagram illustrating the assembly of the ALC wall panel under the window and the ALC wall panel between the windows in this embodiment; Figure 5 for Figure 4 Enlarged structural diagram of section B in the middle; Figure 6 This is a schematic diagram illustrating the structure of the L-shaped angle iron in this embodiment.

[0020] Explanation of reference numerals in the attached figures: In the diagram: 1. Window pier ALC wall panel; 11. Window under ALC wall panel; 12. Vertical ALC wall panel; 13. Flat steel; 131. Groove; 14. Mounting plate; 141. Extension plate; 142. Inclined surface; 143. Rectangular hole; 144. Rectangular rod; 145. Screw; 146. Waist-shaped hole; 15. Scale line; 2. Window pier wall; 21. Window opening; 22. L-shaped angle iron. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] A method for assembling exterior wall panels for ALC openings, such as... Figure 1-6 The ALC wall panel includes two vertically installed inter-window ALC wall panels 1, several vertically installed under-window ALC wall panels 11, and several vertical ALC wall panels 12 located on the side of the inter-window ALC wall panel 1 facing away from the window opening 21. The structure after ALC wall panel construction: Window span wall 2 refers to the opening before ALC wall panels are installed. At this time, the upper end of window span wall 2 is the upper floor slab or beam, the lower end is the lower floor slab, and the left and right sides are ordinary wall panels; Window opening 21 refers to the opening formed after the installation of each ALC wall panel; Window span ALC wall panel 1 is installed on the left and right sides of window opening 21, and its upper and lower ends are welded and fixed to the continuous angle steel at the upper and lower ends of window span wall 2 using flat steel 13. That is, the upper and lower ends of the flat steel 13 on window span ALC wall panel 1 are welded to the continuous angle steel at the upper and lower ends of window span wall 2; Window lower ALC wall panel 11 is installed in the window opening. Below the opening 21, between the two ALC wall panels 1, the upper end of the ALC wall panel 1 is welded and fixed to the flat steel 13 on both sides of the ALC wall panel 1 as a window sill capping. The vertical ALC wall panel 12 has pipe clamps installed at both ends. The pipe clamps at both ends are welded and fixed to the continuous angle steel on the upper and lower surfaces of the window wall 2, or the pipe clamps are anchored to the upper wall surface of the window wall 2 by nails. The lower end of the ALC wall panel 11 under the window is also equipped with pipe clamps. The pipe clamps are installed in the same way as the vertical ALC wall panel 12, that is, they are welded and fixed to the continuous angle steel on the lower surface of the window wall 2, or the pipe clamps are anchored to the lower wall surface of the window wall 2 by nails.

[0023] The length of the continuous angle steel is distributed along the width of various ALC wall panels. The vertical side plate of the continuous angle steel is close to the outer surface of the ALC wall panel, that is, the outdoor side. The horizontal side plate of the continuous angle steel is firmly connected to the window wall 2 by expansion bolts. The above-mentioned ALC wall panels are connected and fixed to the continuous angle steel by hook bolts.

[0024] Installation method: Install ALC wall panels in the following order: S1, starting from one end of the wall of the window span 2, install the vertical ALC wall panels 12 one by one until the window span 2 is reached on the side of the window opening 21; S2, Install the ALC wall panel 1 between windows on one side of the window opening 21; S3, in the gap between the ALC wall panels 1 on both sides of the window opening 21, install the ALC wall panels 11 vertically one by one. The lower end of each ALC wall panel 11 rests on the lower wall surface of the window wall 2, and the upper end is temporarily fixed to the flat steel 13 on the ALC wall panels 1 on both sides of the window by flat steel 13. The flat steel 13 at the upper end of two adjacent ALC wall panels 11 is also temporarily fixed. The temporary fixing method is such as spot welding.

[0025] S4, Install the ALC wall panel 1 between the windows on the other side of the window opening 21; S5, continue installing vertical ALC wall panels 12 one by one from the window opening 21 on the other side of the window opening 21 until the other end of the window wall 2 is reached; During the above installation process, two adjacent ALC wall panels are inserted into each other through the groove 131 and the boss, and adhesive is applied to the contact surface of the groove 131 and the boss for bonding. After pressing, the panel gap width is controlled by the panel gap width control device to make the panel gap width 2-5mm. At this time, the side of the ALC wall panel 1 facing the window opening 21 will have a groove 131 and a flat steel 13 arranged along its length. The length of the groove 131 is the height of the ALC wall panel 11 below the window. The flat steel 13 is centrally located in the middle of this side, and the groove 131 is located on the side of the flat steel 13 closest to the interior. The protrusion on the side of the ALC wall panel 11 below the window facing the ALC wall panel 1 between the window and the window enters the groove 131, and the side of the ALC wall panel 11 below the window facing the ALC wall panel 1 between the window and the window also has a groove for the flat steel 13 on the ALC wall panel 1 between the window and the window to be embedded. A 20mm±5mm gap is reserved between the bottom of each ALC wall panel and the lower wall surface of window sill 2. At this time, each ALC wall panel: vertical ALC wall panel 12, window sill ALC wall panel 1, and window sill ALC wall panel 11 will have gaps with the lower end of window sill 2. Wooden wedges are used for temporary fixation. After the wall panels have been left to stand for no less than 7 days, the wooden wedges are removed and the gaps are filled tightly. Then, the flat steel 13 at the top of the window sill ALC wall panel 11 is fully welded to the flat steel 13 on both sides of the window sill ALC wall panel 1. The flat steel 13 at the top of the adjacent two window sill ALC wall panels 11 is also fully welded. The gaps between the bottom of each ALC wall panel and the lower wall surface of window sill 2 are filled with mortar layer 2, PE rod layer 2, and weather-resistant adhesive layer 2 in sequence from the inside to the outside.

[0026] A 20mm±5mm gap is reserved between the top of each ALC wall panel and the upper wall surface of the window span 2. This gap will only be formed between the vertical ALC wall panel 12 and the window span ALC wall panel 1 and the top of the window span 2. After the wooden wedges are removed, the gap is filled tightly. The gap between the top of each ALC wall panel and the upper wall surface of the window span 2 is filled with mortar layer 1, PU foam layer, PE rod layer 1 and weather-resistant adhesive layer 1 in sequence from the inside to the outside.

[0027] Both mortar layer one and mortar layer two are 1:3 cement mortar. Mortar layer one and mortar layer two are rigid materials used for filling and filling, providing stable support for the wall panel; PE rods and weather-resistant adhesive are used on the outside to provide waterproof sealing. The second mortar layer is 20mm ± 5mm thick and bears the weight of the ALC wall panel. The first mortar layer is 5-10mm thick and is used to seal the gap between the top of each ALC wall panel and the upper wall surface of the window sill 2. There is a beam above and a wall panel below, sandwiched in the middle. It can transmit force but its main function is sealing. If the first mortar layer cracks, it will affect the sealing performance but will not affect the structural safety. The thickness of the flexible material (PU foam layer, PE rod layer 1) in the upper gap is greater than that of the first mortar layer. The first mortar layer is only responsible for sealing and not for bearing the weight. When the ALC wall undergoes slight deformation, the flexible material absorbs the deformation through its own compression / rebound. Since the first mortar layer is thin and sandwiched in the middle, it will not form a rigid constraint. Even if micro-cracks occur, it will not affect the overall structural safety.

[0028] If a second PE rod is not installed in the lower gap, the second weather-resistant adhesive layer will be directly adhered to the three fixed surfaces of the gap. When deformed, it will be torn and easily cracked. Therefore, a second PE rod is needed. The second PE rod acts as an isolation layer. As a foam rod that combines elasticity and support, it supports the outer second weather-resistant adhesive layer and controls its thickness. The second PE rod and the second weather-resistant adhesive layer are only responsible for the waterproof sealing of the outside.

[0029] like Figure 1-6 The installation sequence adopts a unidirectional flow from left to right (or right to left), ensuring that the assembly direction of the entire wall remains singular and continuous, reducing the problem of not being able to close the middle section when installing in both directions. By setting a continuous flat steel 13 (centered) and a groove 131 (offset to the interior side) on the side of the ALC wall panel 1 facing the window opening 21, and the length of the groove 131 is only equal to the height of the ALC wall panel 11 below the window, the staggered arrangement of the reinforcement component (flat steel 13) and the splicing structure (groove 131) on the same side is achieved. The central setting of the flat steel 13 ensures balanced force, and the flat steel 13 and the groove 131 on the same side not only ensure the reinforcement strength of the window opening 21, but also achieve reliable splicing between the wall panels.

[0030] When installing ALC wall panels, leave a 20mm gap at both the top and bottom. The bottom is temporarily fixed with wooden wedges. After installation, allow the wall panels to stand for at least 7 days to allow them to fully settle and release stress under their own weight before removing the wooden wedges and filling them tightly. This time interval allows the ALC wall panels to complete creep and stress release without interference, effectively reducing the sinking of the ALC wall panels caused by premature removal of wooden wedges, eliminating the cumulative effect of structural deformation caused by construction loads, and ensuring the long-term stability of the wall after installation.

[0031] A joint width control device is used to adjust the length of the extension plate 141 into the joint, controlling the joint width within the range of 2-5mm. At the same time, the installation is complete when the side wall of the wall panel to be installed touches the inclined surface 142 of the extension plate 141. The operator can obtain clear physical feedback that the panel cannot be pushed, making the judgment intuitive and reliable. The device is detachable and reusable, does not leave residue in the joint, and does not affect the subsequent adhesive filling, effectively ensuring that the joint is uniform and full, and improving the integrity and sealing of the wall.

[0032] The three-stage process of temporarily fixing the ALC wall panel 11 under the window, allowing it to settle, and then fully welding it in place ensures that the weight of the ALC wall panel 11 under the window is entirely supported by the bottom wooden wedges during the settling period. Only after the settlement is completed is it welded to the ALC wall panels 1 between the windows on both sides using flat steel 13 to form an integral load-bearing frame. This process not only ensures that the settlement and stress release of the wall panel itself are unrestricted, but also achieves a reliable connection between the ALC wall panel 11 under the window and the ALC wall panel 1 between the windows. It also reduces the risk of shear failure of the welded joints during the settlement process and improves the structural safety and durability of the window opening 21.

[0033] The ALC wall panel 11 under the window is vertically installed in the gap between the ALC wall panels 1 on both sides of the window. The upper end is welded and fixed to the flat steel 13 on the ALC wall panels 1 on both sides of the window by flat steel 13, so that the ALC wall panel 11 under the window and the ALC wall panel 1 on the window form an integral load-bearing frame. The welded connection of the flat steel 13 ensures the node stiffness, so that the ALC wall panel 11 under the window is not just a passive filler, but actively participates in the overall load-bearing of the wall, jointly resisting horizontal loads such as wind pressure and earthquakes, and improving the seismic performance and structural safety of the window opening 21.

[0034] The following steps precede S1 above: The first step is to draw the exterior wall panel layout and rebar installation diagram based on the ALC wall panel construction drawings, and determine the size of the ALC wall panel and the rebar installation position for each window opening (21 locations). The second step is to drill holes in the ALC wall panel at the window opening 21 in the ground processing area according to the rebar installation diagram, insert the threaded rebar into the holes and fix it with rebar adhesive. The threaded rebar is arranged alternately along the length of the wall panel. The third step is to insert the flat steel 13 into the inside of the fixed threaded steel bar, so that the flat steel 13 fits against the surface of the wall panel, and weld the flat steel 13 to the threaded steel bar to form an integral reinforced wall panel. The fourth step is to install continuous angle steel on the upper and lower ends of the window wall 2 on the side closest to the outer wall, and fix the ends of the continuous angle steel to the reinforced concrete structure with expansion bolts.

[0035] like Figure 1-6If the ALC wall panels are spliced ​​sequentially from left to right, the vertical ALC wall panel 12 at the far left edge is also connected to the left wall of the window span 2 through the groove 131 and the protrusion. Adhesive is applied to the contact surface between the groove 131 and the protrusion for bonding. After compression, the gap width is controlled by the panel gap width control device to make the gap width 2-5mm. At this time, the left wall panel of the window span 2 is the side of the extension plate 141 in the panel gap width control device that is close to it. At this time, the groove 131 is pre-cut on the left wall of the window span 2. Several L-shaped angle irons 22 arranged in a vertical array are first installed on the right wall of the window span 2. One side plate of the L-shaped angle iron 22 is located outside the vertical ALC wall panel 12 at the far right edge. Adhesive is applied between the vertical ALC wall panel 12 at the far right edge and the right wall of the window span 2.

[0036] like Figure 1-6 The plate joint width control device includes: Mounting plate 14 is detachably fixed to the surface of the installed ALC wall panel by fasteners. At this time, the installed ALC wall panel is the reference for installing the next ALC wall panel. Extension plate 141 is disposed on mounting plate 14 and extends toward the joint between two adjacent ALC wall panels. One side of extension plate 141 is close to the side wall of the installed ALC wall panel, and the opposite side of extension plate 141 is provided with inclined surface 142. The extension plate 141 and the mounting plate 14 are slidably fitted together. The extension plate 141 can slide relative to the mounting plate 14 in a direction close to or away from the plate seam. Specifically, a rectangular hole 143 is provided on the mounting plate 14, and one end of the extension plate 141 is provided as a rectangular rod 144 that slides in the rectangular hole 143, and one end of the rectangular rod 144 extends out of the mounting plate 14 on the side away from the plate seam. The extension plate 141 is provided with screws 145, which are threadedly connected to the rectangular rod 144. The mounting plate 14 is provided with a number of oblong holes 146 through which the screws 145 pass. The length of the oblong holes 146 is distributed along the sliding direction of the rectangular rod 144. By changing the position of the screws 145 in the oblong holes 146, the length of the extension plate 141 extending into the plate gap can be adjusted to control the width of the plate gap. When the ALC wall panel to be installed is pushed towards the already installed ALC wall panel, the side wall of the ALC wall panel to be installed abuts against the inclined surface 142, indicating that the ALC wall panel to be installed is in place. Since one side of the extension plate 141 is the inclined surface 142, the width of the portion extending into the panel joint changes continuously as the extension plate 141 slides: when sliding deeper into the panel joint, the position where the inclined surface 142 intersects with the panel joint changes, and the actual width extending into the panel joint increases; when pulled back outward, the actual width extending into the panel joint decreases. The width of the gap between the two ALC wall panels is exactly equal to the width of the portion of the extension plate 141 extending into the panel joint, which is the design requirement for the panel joint width.

[0037] The extension plate 141 has a scale line 15 along its sliding direction. The scale line 15 is designed on the rectangular rod 144 and is used to indicate the width value of the part of the extension plate 141 that extends into the plate seam. The mounting plate 14 has a reference mark. The reference mark can be the end face of the mounting plate 14 facing the plate seam. When the rectangular rod 144 extends a certain length from the mounting plate 14, the scale line 15 is aligned with the reference mark. The value of the scale line 15 corresponding to the reference mark is the currently set plate seam width.

[0038] There are multiple mounting plates 14, which are distributed vertically and horizontally on the surface of the installed ALC wall panel. The angle between the inclined surface 142 and the length direction of the extension plate 141 is 30° to 45°.

[0039] The surface of the extension panel 141 is coated with a release agent or an anti-stick film, and the fastener is a vacuum suction cup or tape. The vacuum suction cup is attached to the surface of the installed ALC wall panel.

[0040] The steps for controlling the joint between two adjacent ALC wall panels are as follows: The first step is to fix the mounting plate 14 to the surface of the installed ALC wall panel using fasteners, so that the extension plate 141 extends into the gap between the side wall of the installed ALC wall panel and the second ALC wall panel to be installed. The second step is to adjust the position of the screw 145 in the waist-shaped hole 146 according to the target board gap width, and fix the extension plate 141 to the mounting plate 14 by the screw 145, and adjust the length of the extension plate 141 extending into the board gap. The third step is to push the ALC wall panel to be installed toward the already installed ALC wall panel until the side wall of the ALC wall panel to be installed abuts against the inclined surface 142 of the extension plate 141. Fourth step, remove the fasteners and take the mounting plate 14 and the extension plate 141 out of the plate seam; Fifth step: Fill the gaps between the boards with adhesive.

[0041] After the fifth step of installation, the stabilization period should be more than one week. Then, alkali-resistant fiberglass mesh should be bonded to the joints of the boards to prevent cracking. The width of the alkali-resistant fiberglass mesh should not be less than 300mm, and it should be set in the center along the joints of the boards.

[0042] During installation, the pre-installed ALC wall panel is used as a reference plate. The operator uses a vacuum suction cup to attach three mounting plates 14 to the surface of this reference plate, with the three mounting plates 14 spaced vertically. At this time, extension plates 141, pre-installed on the mounting plates 14, extend into the side wall of the reference plate and are positioned at the seam between the ALC wall panels to be installed. A GRABO PRO vacuum suction cup can be used.

[0043] Next, according to the design requirement of a 5mm gap width, the operator changes the position of the screw 145 in the oblong hole 146 and tightens the screw 145 on the extension plate 141 onto the upper end face of the mounting plate 14, so that the extension plate 141 is fixed relative to the mounting plate 14. At this time, since the mounting plate 14 has been fixed on the reference plate, the thickness of the part of the extension plate 141 that enters the gap is the width of the gap to be controlled.

[0044] Then, the ALC wall panel to be installed is pushed horizontally towards the reference plate. The side wall of the ALC wall panel to be installed first contacts the inclined surface 142 of the extension plate 141 until it can no longer be pushed. At this time, the operator receives clear physical feedback that it cannot be pushed, indicating that the ALC wall panel to be installed has been installed in place, and the width of the panel gap is the preset value.

[0045] After confirming that the installation is in place, release the suction force of the vacuum suction cup and remove the mounting plate 14 and the extension plate 141 from the plate joint together; finally, fill the plate joint with adhesive to ensure that the plate joint is fully and densely filled, and the installation of the plate joint is completed.

[0046] By fixing screws 145 to different positions on the mounting plate 14 and adjusting the length of the extension plate 141 extending into the gap, the gap width can be controlled within any value within the range of 2-5mm according to design requirements. One device can adapt to different gap width requirements, eliminating the need for spacers of various thicknesses, thus offering strong applicability. It reduces the problem of inconsistent gap widths caused by differences in worker experience, improving the stability and consistency of installation quality. The device is detachably fixed using a vacuum suction cup, allowing it to be removed entirely from the gap after installation. Furthermore, the surface of the extension plate 141 is coated with a release agent or anti-stick film, preventing adhesion to the adhesive. The device is reusable, ensuring workers won't forget to remove it, and it doesn't remain in the gap, thus not affecting the subsequent filling and curing of the adhesive, guaranteeing the fullness and bonding strength of the gap.

[0047] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A method for assembling exterior wall panels for ALC openings, characterized in that, ALC wall panels include two vertically installed inter-window ALC wall panels, several vertically installed under-window ALC wall panels, and several vertical ALC wall panels located on the side of the inter-window ALC wall panels facing away from the window opening. Install the ALC wall panels in the following order: S1, starting from one end of the wall between the windows, install the vertical ALC wall panels one by one until you reach the wall between the windows on one side of the window opening; S2, Install the ALC wall panel between the windows on one side of the window opening; S3, install the ALC wall panels under the window vertically one by one in the gap between the ALC wall panels under the window opening and between the two windows. The lower end of each ALC wall panel under the window rests on the wall surface under the window, and the upper end is temporarily fixed to the flat steel on the ALC wall panels between the two windows by flat steel. The flat steel at the upper end of the two adjacent ALC wall panels under the window is also temporarily fixed. S4, Install the ALC wall panel between the windows on the other side of the window opening; S5. Continue installing vertical ALC wall panels one by one from the ALC wall panel on the other side of the window opening until the other end of the window wall is reached. During the above installation process, two adjacent ALC wall panels are inserted into each other by a groove and a boss, and adhesive is applied to the contact surface of the groove and the boss for bonding. After pressing, the panel gap width is controlled by a panel gap width control device to make the panel gap width 2-5mm. At this time, the side of the ALC wall panel facing the window opening will have a groove and a flat steel bar arranged along its length. The length of the groove is the height of the ALC wall panel below the window. The flat steel bar is centrally located in the middle of this side, and the groove is located on the side of the flat steel bar closer to the interior. The protrusion of the side of the ALC wall panel below the window facing the ALC wall panel between the windows enters the groove. A 20mm±5mm gap is reserved between the bottom of each ALC wall panel and the wall surface under the window. Wooden wedges are used for temporary fixation. After the wall panel has been left to stand for no less than 7 days, the wooden wedges are removed and the gap is filled tightly. Then, the flat steel at the top of the ALC wall panel under the window is fully welded and fixed to the flat steel on the ALC wall panels on both sides of the window. The flat steel at the top of the adjacent ALC wall panels under the window is also fully welded and fixed. A 20mm±5mm gap is left between the top of each ALC wall panel and the wall surface of the window sill, and the gap is filled tightly after the wooden wedges are removed.

2. The ALC opening exterior wall panel assembly construction method as described in claim 1, characterized in that, The following steps precede S1 above: The first step is to draw the exterior wall panel layout and rebar installation diagram based on the ALC wall panel construction drawings, and determine the size of each ALC wall panel and the location of the rebar installation at each window opening. The second step is to drill holes in the ALC wall panel at the window opening in the ground processing area according to the rebar installation diagram, insert the threaded rebar into the holes and fix it with rebar adhesive. The threaded rebar is arranged alternately along the length of the wall panel. The third step is to insert the flat steel into the inside of the fixed threaded steel bar, so that the flat steel is in contact with the surface of the wall panel, and then weld the flat steel to the threaded steel bar to form an integral reinforced wall panel. The fourth step is to install continuous angle steel on the upper and lower ends of the window pier near the outer wall, and fix the ends of the continuous angle steel to the reinforced concrete structure with expansion bolts.

3. The ALC opening exterior wall panel assembly construction method as described in claim 2, characterized in that, Each of the above ALC wall panels is connected and fixed to a continuous angle steel using hook bolts; The ALC wall panels between windows are installed on the left and right sides of the window opening, and their upper and lower ends are welded and fixed to the continuous angle steel at the upper and lower ends of the window wall by flat steel. The ALC wall panels below the window opening are installed between the two ALC wall panels between windows, and their upper ends are welded and fixed to the flat steel on the ALC wall panels on both sides by flat steel on their own as a window sill capping. The vertical ALC wall panels have pipe clamps installed at both ends. The pipe clamps are long strips of stainless steel plates, one end of which is fixed to the ALC wall panel, and the other end extends out of the ALC wall panel. The pipe clamps at both ends are welded and fixed to the continuous angle steel on the upper and lower surfaces of the window wall, or the pipe clamps are anchored to the wall surface of the window wall by nails. Pipe clamps are also installed at the lower end of the ALC wall panel under the window, and the installation method of the pipe clamps is the same as that of the vertical ALC wall panel.

4. The ALC opening exterior wall panel assembly construction method as described in claim 3, characterized in that, The gaps between the top of each ALC wall panel and the wall surface of the window sill are filled sequentially from the inside to the outside with mortar layer 1, PU foam layer 1, PE rod layer 1 and weather-resistant adhesive layer 1.

5. The ALC opening exterior wall panel assembly construction method as described in claim 3, characterized in that, The gap between the bottom of each ALC wall panel and the wall surface under the window is filled with mortar layer two, PE rod layer two and weather-resistant adhesive layer two in sequence from the inside to the outside.

6. The ALC opening exterior wall panel assembly construction method as described in claim 1, characterized in that, The plate gap width control device includes: Mounting plate, which is detachably fixed to the surface of the installed ALC wall panel by fasteners; An extension plate is provided on the mounting plate and extends towards the joint between two adjacent ALC wall panels. One side of the extension plate is close to the side wall of the installed ALC wall panel, and the opposite side of the extension plate is provided with an inclined surface. The extension plate and the mounting plate are slidably engaged, and the extension plate can slide relative to the mounting plate in a direction close to or away from the plate seam. The extension plate is provided with screws, and the mounting plate has an oblong hole for the screws to pass through. By moving the screws to different positions in the oblong hole, the length of the extension plate extending into the plate gap can be adjusted to control the width of the plate gap. When the ALC wall panel to be installed is pushed toward the already installed ALC wall panel, the side wall of the ALC wall panel to be installed comes into contact with the inclined surface, which means that the ALC wall panel to be installed is in place.

7. The ALC opening exterior wall panel assembly construction method as described in claim 6, characterized in that, The number of mounting plates is multiple, and each mounting plate is distributed vertically and horizontally on the surface of the installed ALC wall panel. The angle between the inclined surface and the length direction of the extension plate is 30° to 45°.

8. The ALC opening exterior wall panel assembly construction method as described in claim 7, characterized in that, The surface of the extension plate is coated with a release agent or an anti-sticking film, and the fixing component is a vacuum suction cup, which is adsorbed onto the surface of the installed ALC wall panel.

9. The ALC opening exterior wall panel assembly construction method as described in claim 8, characterized in that, The steps for controlling the joint between two adjacent ALC wall panels are as follows: The first step is to fix the mounting plate to the surface of the installed ALC wall panel using fasteners, so that the extension plate extends into the gap between the side wall of the installed ALC wall panel and the second ALC wall panel to be installed. The second step is to adjust the position of the screws on the mounting plate in the oblong hole according to the target gap width, fix the extension plate to the mounting plate with the screws, and adjust the length of the extension plate extending into the gap. The third step is to push the ALC wall panel to be installed toward the already installed ALC wall panel until the side wall of the ALC wall panel to be installed abuts against the inclined surface of the extension plate. Fourth step, remove the fasteners and take the mounting plate and the extension plate out of the plate seam; Fifth step: Fill the gaps in the boards with adhesive.

10. The ALC opening exterior wall panel assembly construction method as described in claim 9, characterized in that, After the fifth step of installation, the stabilization period should be more than one week. Then, alkali-resistant fiberglass mesh should be bonded to the joints of the boards to prevent cracking. The width of the alkali-resistant fiberglass mesh should not be less than 300mm, and it should be set in the center along the joints of the boards.

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