Combined ALC window opening outer wall structure and construction method

Abstract

The application belongs to the technical field of fabricated wall construction, and particularly relates to a combined ALC window opening outer wall structure and a construction method, comprising a plurality of adjustable connecting assemblies, a plurality of limiting stoppers and at least one ALC wallboard, pretreatment work such as ALC wallboard anchor planting and flat steel welding is completed on the ground in advance, which maximally reduces the content and time of high-altitude work, and through systematic innovation, the construction safety, installation quality and work efficiency are successfully improved in cooperation, the core of which is to transform high-risk and high-difficulty work at high altitude into a safe and controllable prefabrication process on the ground, and relying on an adjustable, anti-loose and strengthened integrated connecting and positioning system, the drawbacks of traditional methods are fundamentally overcome, and the application has the comprehensive advantages of intrinsic safety, precision and efficiency, firmness and reliability, and provides an advanced solution for the construction of the window opening of the fabricated building outer wall.

Description

Technical Field

[0001] This invention belongs to the field of prefabricated wall construction technology, and particularly relates to a combined ALC window opening exterior wall structure and construction method. Background Technology

[0002] With the rapid development of prefabricated buildings, autoclaved aerated concrete (AAC) wall panels have been widely used in building envelopes due to their advantages such as lightweight, high strength, fire resistance, sound insulation, heat insulation, and ease of processing. In reinforced concrete structural systems, the installation of AAC wall panels at window openings is a crucial step in construction, and its quality directly affects the building's appearance, airtightness, watertightness, and overall structural safety.

[0003] Traditional methods for constructing ALC wall panels for window openings typically involve on-site high-altitude work. During construction, workers position, temporarily support, connect, and fix the panels at the edge of the wall. This method has several drawbacks: First, working at heights near edges carries high safety risks, requiring extremely high levels of safety protection for workers, and increasing the risk of falls. Second, on-site construction is greatly affected by weather, environment, and worker skill levels, making it difficult to guarantee installation accuracy. Problems such as uneven panel surfaces, loose joints, and verticality deviations frequently occur, leading to high rework rates and low construction efficiency. Third, traditional connection and fixing methods (such as relying solely on embedded parts or chemical anchors) require extremely high accuracy in pre-positioning; once deviations occur, adjustments are difficult, and the overall integrity, wind pressure resistance, and seismic performance of the connection nodes need improvement. Especially for large window openings requiring the splicing of multiple ALC wall panels, ensuring the flatness, verticality, and overall stability of the splicing joints is a major challenge posed by traditional construction methods.

[0004] To address these issues, the industry has attempted some improvements, such as partial pre-assembly on the ground or the use of more complex metal connectors. However, these methods often fail to systematically resolve the conflict between the risks of working at heights, the control of installation precision, and the strength of connection nodes. They either sacrifice installation efficiency, fail to significantly improve node performance, or still cannot effectively prevent high-altitude precision operations.

[0005] Therefore, there is an urgent need for an innovative ALC window opening exterior wall structure and its construction method, which can transform complex installation work at height and near edges into safe and controllable prefabrication work on the ground to the greatest extent possible. At the same time, through a precise connection system and reinforced structure, it can achieve safe, efficient, high-precision, and one-time molding installation of ALC wall panels for window openings, fundamentally improving construction quality, efficiency and safety. Summary of the Invention

[0006] To address the aforementioned problems, this invention provides a combined ALC window opening exterior wall structure and construction method, which solves the problems mentioned in the background art.

[0007] To achieve the above objectives, the present application provides the following technical solution: The present invention provides a combined ALC window opening exterior wall structure, including several sets of adjustable connecting components, several limiting blocking components, and at least one ALC wall panel. The several sets of adjustable connecting components are fixed to the concrete beams of the main building structure by expansion bolts, and each set of adjustable connecting components adjacent to each other on the left and right are engaged by positioning pins; the several limiting blocking components are connected to the concrete beams and positioned connected to the adjustable connecting components, and include blocking strips; the ALC wall panel is connected to the adjustable connecting components by several hook bolts, and the hook bolts are further connected to the adjustable connecting components by welding.

[0008] Before splicing the ALC wall panels, the side walls of the ALC wall panels at the window positions are reinforced with rebar. Two rows of threaded steel bars are installed along the height direction, and each rebar installation point between the two rows of threaded steel bars is staggered. Flat steel bars are welded together between the two rows of threaded steel bars.

[0009] During the installation of ALC wall panels, the primary positioning is achieved by installing adjustable connecting components on the concrete beam. Then, blocking strips are installed to connect the corresponding adjustable connecting components on the upper and lower sides into a single unit. The blocking strips then provide secondary positioning and side support for the ALC wall panels.

[0010] According to an advantageous embodiment, the adjustable connection assembly includes an angle steel, with mounting block A and mounting block B welded symmetrically to the horizontal end faces of the angle steel. The center of mounting block A is provided with a stepped circular groove, and the center of mounting block B is provided with a stepped waist-shaped groove. A sliding groove is provided on the stepped side wall of the waist-shaped groove.

[0011] The inside of the waist-shaped groove is provided with a limiting expansion tube, which is slidably locked in the groove of the waist-shaped groove.

[0012] The mounting block A, mounting block B, and limiting expansion tube are respectively fixed to the concrete beam by expansion bolts that pass through the circular groove and the waist-shaped groove.

[0013] According to an advantageous embodiment, the outer side of the stepped surface of the circular groove and the waist-shaped groove, as well as the top surface of the limiting expansion tube, are provided with mutually cooperating oblique tooth grooves.

[0014] According to an advantageous embodiment, bolt holes are provided on both sides of the horizontal end face of the angle steel, and a baffle plate is detachably installed in the bolt holes by bolts, with the two baffle plates arranged opposite each other.

[0015] According to an advantageous embodiment, pin holes are provided on the outer walls of both the left and right sides of the angle steel, and the left and right adjacent angle steels are connected by positioning pins inserted into the pin holes.

[0016] According to an advantageous embodiment, T-shaped grooves are symmetrically provided on the outer side of the vertical end face of the angle steel.

[0017] The limiting and blocking component includes an L-shaped block and a blocking strip connected to the L-shaped block. The L-shaped block is slidably disposed in a T-shaped groove. The blocking strip is connected between two L-shaped blocks that are opposite each other. The L-shaped block is fixed to the concrete beam by expansion bolts.

[0018] According to an advantageous embodiment, the two vertical sides of the ALC wall panel are respectively provided with a panel groove and a panel protrusion, and two adjacent ALC wall panels are engaged and fitted together through the panel groove and the panel protrusion.

[0019] According to an advantageous embodiment, the limiting expansion tube is composed of a tube and a rectangular sleeve, the upper end face of which is provided with a serrated groove.

[0020] In addition, the present invention also provides a construction method for a combined ALC window opening exterior wall structure, which specifically includes the following steps: S1, construction preparation: draw an ALC wall panel layout diagram and a rebar installation diagram according to the design drawings, and prepare the corresponding materials and tools.

[0021] S2. ALC wall panel pretreatment: Drill holes, clean holes, inject adhesive and insert threaded steel bars at the predetermined positions of the ALC wall panels in an alternating pattern. After curing, weld the flat steel bars and all the threaded steel bars into a whole to form reinforcing ribs.

[0022] S3. Install the adjustable connection components: Mark the installation position lines on the concrete beam and drill holes. After completion, install and fix the adjustable connection components with expansion bolts.

[0023] S4. Install the limit blocking system: Fix the blocking strip to the angle steel.

[0024] S5. ALC wall panel installation and fixing: Hoist the pre-treated ALC wall panel between the upper and lower angle steels, connect and lock it to the angle steels using hook bolts, and then weld the hook end of the hook bolt to the angle steel.

[0025] Compared with existing technologies, the combined ALC window opening exterior wall structure and construction method provided by the embodiments of the present invention have the following beneficial effects: 1. Through systematic innovation, the present invention has successfully achieved a synergistic improvement in construction safety, installation quality and work efficiency. Its core lies in transforming the high-risk and high-difficulty operation at high altitudes and near edges into a safe and controllable prefabrication process on the ground. Relying on an adjustable, anti-loosening, and reinforced integrated connection and positioning system, it fundamentally overcomes the drawbacks of traditional methods and has the comprehensive advantages of inherent safety, precision, efficiency and robust reliability, providing an advanced solution for the construction of prefabricated building exterior wall window openings.

[0026] 2. This invention minimizes the amount and time spent on high-altitude work by pre-processing the ALC wall panels on the ground, such as installing reinforcing bars and welding flat steel. This transforms the most risky edge-facing operations into safer zone work, significantly reducing safety hazards. Simultaneously, the modular adjustable connection components and limiting and blocking system form a precise "installation frame," making on-site construction as easy as "building blocks." The process is clear and simple; after the ALC wall panels are hoisted, they can be quickly positioned and fixed within the frame, greatly shortening the high-altitude installation cycle, improving construction efficiency, and ensuring the controllability and one-time completion rate of the installation process.

[0027] 3. In this invention, the positioning pins and L-shaped blocks first ensure the overall flatness and verticality of the spliced ​​ALC wall panels, significantly improving the joint quality of the multiple ALC wall panels. Secondly, the adjustable connection components allow for a certain amount of construction error and are highly adaptable. The interlocking mechanism of the oblique tooth groove effectively prevents the expansion bolts from loosening. The "mechanical + welding" double-insurance fixing method of the hook bolts and angle steel ensures the extreme reliability of the connection. Finally, the ALC wall panel body at the window position is reinforced with staggered reinforcement and welded flat steel to form reinforcing ribs, which greatly enhances the wind pressure resistance and seismic performance of the local wall panel at the window opening and improves the overall safety reserve of the structure. Attached Figure Description

[0028] Figure 1 This is a three-dimensional structural diagram of the exterior wall structure of the combined ALC window opening.

[0029] Figure 2 A three-dimensional structural diagram of adjustable connection components and limiting stops installed on a concrete beam.

[0030] Figure 3 A partial structural diagram showing the adjustable connection assembly and limiting stop installed on a concrete beam.

[0031] Figure 4 The ALC wall panel three-dimensional structure located at the window position in this invention Figure 1 .

[0032] Figure 5 The ALC wall panel three-dimensional structure located at the window position in this invention Figure 2 .

[0033] Figure 6 for Figure 3 Side view of the middle.

[0034] Figure 7 This is a three-dimensional structural diagram of the limiting expansion tube of the present invention.

[0035] The attached figures are labeled as follows: 1. Adjustable connection assembly; 11. Angle steel; 111. Blocking plate; 112. Pin hole; 113. T-slot; 12. Mounting block A; 121. Circular slot; 13. Mounting block B; 131. Waist-shaped slot; 14. Oblique toothed slot; 15. Limiting expansion tube; 151. Pipe; 152. Rectangular sleeve; 2. Limiting blocking component; 21. L-shaped block; 22. Blocking strip; 3. ALC wall panel; 31. Panel groove; 32. Panel protrusion; 33. Threaded steel; 34. Flat steel. Detailed Implementation

[0036] The following is in conjunction with the appendix Figure 1 -Appendix Figure 7 This application will now be described in further detail.

[0037] Please refer to the following: Figure 1 , Figure 4 and Figure 5 A modular ALC window opening exterior wall structure is mainly applicable to the assembly and construction of ALC wall panels 3 for window openings in reinforced concrete structures. It is particularly suitable for traditional window opening construction scenarios that require edge reinforcement at high altitudes. Its purpose is to achieve safe, efficient, and one-time assembly of ALC wall panels 3 for window openings by pre-implanting threaded steel bars 33 and flat steel bars 34 for welding reinforcement and precise positioning and installation of adjustable connecting components 1. This improves installation stability and construction efficiency, while transforming traditional high-altitude edge work into ground prefabrication, significantly reducing safety risks and improving construction accuracy and one-time molding rate. Specifically, this combined ALC window opening exterior wall structure includes several sets of adjustable connecting components 1, several limiting and blocking components 2, and ALC wall panels 3. The adjustable connecting components 1 are all fixed to the concrete beams by expansion bolts, and each set of adjustable connecting components 1 adjacent to each other on the left and right are engaged by positioning pins. The limiting and blocking components 2 are connected to the concrete beams, and the limiting and blocking components 2 are positioned and connected to the adjustable connecting components 1. The ALC wall panels 3 are connected to the adjustable connecting components 1 by several hook bolts, and the hook bolts are further connected to the adjustable connecting components 1 by welding.

[0038] Before splicing ALC wall panels 3, the side walls of the ALC wall panels at the window positions are reinforced with rebar. Two rows of threaded steel bars 33 are installed along their height. Each rebar installation point between the two rows of threaded steel bars 33 is staggered. Flat steel bars 34 are welded together between the two rows of threaded steel bars 33. The staggered arrangement of each rebar installation point during drilling can minimize the damage to the overall structure of the ALC wall panel 3 during drilling. At the same time, the staggered arrangement of rebar installation points can also greatly improve the overall strength after the flat steel bars 34 are connected to all the threaded steel bars 33. The tie mesh formed by the staggered threaded steel bars 33 has higher strength.

[0039] This embodiment takes the construction of a single ALC wall panel 3 as an example. (See attached document.) Figure 1 and Figure 2 During the actual construction, the ALC wall panel 3 at the window position is pre-treated first. Specifically, according to the design drawings and rebar installation drawings, the positions of two rows of rebars are measured on one side of the ALC wall panel 3 corresponding to the window position. Two rebar position lines are marked with a chalk line. It is required that each position line is straight with a deviation of less than 1mm. Then, the pre-embedded holes of each threaded steel bar 33 are marked with a tape measure. The pre-embedded holes of the threaded steel bar 33 of each ALC wall panel 3 are arranged in an alternating manner. The first hole is drilled starting from 50mm from the bottom of the ALC wall panel 3 at the ground, and then each hole is arranged in an alternating manner with a spacing of 150mm.

[0040] Then, according to the construction drawings, use an ink line and a level to mark the position line of the adjustable connection component 1 at the construction location of the main building structure, and fix it to the marked position line with expansion bolts. It should be noted that each set of adjustable connection components 1 includes two adjustable connection components 1, one upper and one lower. When installing the adjustable connection components 1, it is necessary to strictly ensure that the upper and lower adjustable connection components 1 are in the same plane and completely perpendicular to the construction location of the main building structure.

[0041] Finally, the ALC wall panel 3 is installed on the two corresponding adjustable connecting components 1, and several hook bolts are used to pass through the ALC wall panel 3 so that one end of the hook is locked on the outer wall of the adjustable connecting component 1. After completion, the threaded section is fitted with a threaded sleeve and the bolt cap is screwed on to complete the fixation. In order to further ensure the fixation effect, one end of the hook of the hook bolt is further connected to the adjustable connecting component 1 by welding.

[0042] See Figure 3 The adjustable connection assembly 1 includes an angle steel 11. The horizontal end faces of the angle steel 11 are symmetrically welded with mounting blocks A12 and B13. A stepped circular groove 121 is provided at the center of mounting block A12. Considering the uncertainties caused by construction deviations during drilling, resulting in deviations in the drilling spacing, please refer to... Figure 3 and Figure 7 The mounting block B13 has a stepped waist-shaped groove 131 at its center, and a sliding groove is provided on the stepped side wall of the waist-shaped groove 131; a limiting expansion tube 15 is provided inside the waist-shaped groove 131, and the limiting expansion tube 15 is installed in the sliding groove in a detachable manner.

[0043] Specifically, firstly, two holes with a spacing of 200mm are drilled along the position line using an electric drill. After drilling, mounting blocks A12 and B13 are installed in the drilled positions using expansion bolts. Then, mounting blocks A12 and B13 are welded to angle steel 11. It should be noted that due to construction deviations, if the spacing between the two drilled holes is greater than or less than 200mm, the connection position between the limiting expansion tube 15 and mounting block B13 can be adjusted to ensure that the spacing between mounting blocks A12 and B13 is constant, thus strictly guaranteeing the connection strength of mounting blocks A12, B13, and angle steel 11 after welding.

[0044] See Figure 3 and Figure 7 The limiting expansion tube 15 consists of a tube 151 and a rectangular sleeve 152. It should be noted that when installing the limiting expansion tube 15 between the limiting expansion tube 15 and the waist-shaped groove 131, firstly, the length direction of the rectangular sleeve 152 should be consistent with the length direction of the waist-shaped groove 131, and the lower end face of the rectangular sleeve 152 should be in contact with the stepped surface of the waist-shaped groove 131. After completion, rotate the limiting expansion tube 15 so that the rectangular sleeve 152 rotates 90 degrees. At this time, the rectangular sleeve 152 is inserted into the sliding groove on the side wall of the waist-shaped groove 131. After sliding into the sliding groove, the limiting expansion tube 15 can be limited to move inside the waist-shaped groove 131. When adjusting the drilling position, the limiting expansion tube 15 can be moved to adapt to the corresponding drilling position. The installation efficiency of the limiting expansion tube 15 is greatly improved by rotating the limiting expansion tube 15 90 degrees to insert it into the sliding groove.

[0045] See Figure 3 and Figure 7 The stepped surface of the waist-shaped groove 131 located on the outer side of the groove opening and the stepped surface of the circular groove 121 located on the outer side of the groove opening are both provided with oblique toothed grooves 14. The upper end face of the rectangular sleeve plate 152 of the limiting expansion tube 15 is also provided with oblique toothed grooves 14. The purpose of setting oblique toothed grooves 14 is to improve the connection strength with the expansion bolt, thereby strictly preventing the expansion bolt from loosening after installation.

[0046] See Figure 3 Bolt holes are provided on both sides of the horizontal end face of the angle steel 11. A blocking plate 111 is installed on each of the bolt holes on both sides of the horizontal end face of the angle steel 11 by bolts. The blocking plate 111 is L-shaped and the two blocking plates 111 are arranged opposite to each other.

[0047] In this embodiment, the construction of an ALC wall panel 3 is taken as an example. Therefore, the two bolt holes on the angle steel 11 correspond to the installation of the blocking plate 111 (e.g., Figure 3 As shown), the sidewalls of the installed ALC wall panel 3 are limited by two opposing baffles 111, thereby maintaining the stability of the installed ALC wall panel 3; it should also be noted that, see... Figure 4 Because one of the two sides of the ALC wall panel 3 in the two height directions has a panel groove 31 and the other side has a panel protrusion 32, the panel groove 31 and panel protrusion 32 of two adjacent ALC wall panels 3 are fitted together; the purpose of the bolted detachable installation between the blocking plate 111 and the angle steel 11 is to ensure that the panel groove 31 and panel protrusion 32 of adjacent ALC wall panels 3 are completely fitted together when assembling multiple ALC wall panels 3 by removing the blocking plate 111 at the joint position; because the panel groove 31 and panel protrusion 32 are used for the fitting at the joint position of two adjacent blocking plates 111, the installation strength of the ALC wall panel 3 can still be maintained without the need for the blocking plate 111 to limit the position.

[0048] To further improve the connection effect of multiple ALC wall panels 3, please refer to Figure 6 By providing pin holes 112 on both the left and right outer walls of the angle steel 11, adjacent angle steels 11 are connected by inserting positioning pins. When multiple ALC wall panels 3 are connected, the angle steels 11 are connected into one piece by inserting positioning pins, which significantly improves the strength of all adjustable connection components 1 at the installation position. Furthermore, by aligning adjacent angle steels 11 into one piece by positioning pins, it can be ensured that all angle steels 11 are on the same plane, resulting in a smoother joint when installing multiple ALC wall panels 3 later.

[0049] To further ensure that the installation positions of the two adjustable connecting components 1 are completely aligned, and to enable positional calibration of the ALC wall panel 3 during subsequent installation, please refer to [link / reference needed]. Figure 6 The angle steel 11 has T-shaped grooves 113 symmetrically arranged on the side facing outward at the vertical end. The limiting and blocking member 2 includes an L-shaped block 21 and a blocking strip 22 connected to the L-shaped block 21. The L-shaped block 21 is slidably arranged in the T-shaped groove 113, and the two L-shaped blocks 21 that are opposite each other are connected by the blocking strip 22.

[0050] After the angle steel 11 is fixed, L-shaped blocks 21 are inserted into the T-shaped grooves 113 on both sides of the angle steel 11. Before installing the ALC wall panel 3, the two L-shaped blocks 21 that are opposite each other are connected by bolts to install the blocking strip 22. The L-shaped blocks 21 are then fixed to the concrete beam by expansion bolts to further improve the structural strength of the frame formed by the blocking strip 22 and the angle steel 11.

[0051] The L-shaped block 21 connects the blocking strip 22 and the angle steel 11 into a whole, forming an integrated support frame to support the installed ALC wall panel 3. At the same time, the L-shaped block 21 is also fixed to the concrete beam with expansion bolts, which further increases the connection strength between the integrated support frame and the concrete beam. Meanwhile, the angle steel 11 limits the upper and lower ends of the ALC wall panel 3, and the blocking strip 22 marks and limits the sides of the ALC wall panel 3, which greatly improves the accuracy of the entire construction process, reduces the construction difficulty, and improves the construction efficiency.

[0052] The specific construction method of the above-mentioned combined ALC window opening exterior wall structure is as follows: S1. Pre-construction preparation: technical preparation, draw the ALC wall panel 3 layout drawing according to the design drawings, clarify the window opening position and size, and determine the installation position of adjustable connection component 1 and limit blocking component 2; at the same time, draw the rebar diagram, and mark the position, hole spacing and staggered arrangement of the threaded steel 33.

[0053] Materials preparation: Prepare ALC wall panels 3, Φ8mm threaded steel 33, and 100×8mm flat steel 34.

[0054] Prepare angle steel 11 (L63×6), mounting block A12, mounting block B13, limiting expansion tube 15, blocking plate 111, limiting blocking component 2, expansion bolt, and hook bolt.

[0055] Prepare tools such as electric drill, ink line, tape measure, level, welding machine, and cutting machine.

[0056] S2, ALC wall panel 3 pretreatment (rebar installation and flat steel 34 welding): First, use a chalk line to mark two straight rebar position lines with a deviation of <1mm on one side of ALC wall panel 3; after completion, mark the first hole position 50mm from the bottom of ALC wall panel 3, and then mark two rows of holes every 150mm; the holes in each row are staggered.

[0057] Then, use an electric drill to drill a 150mm deep hole with a diameter of 8mm at the marked position. After drilling, clean the dust inside the hole, inject anchoring adhesive into the hole, and then insert Φ8mm threaded steel bar 33, keeping the exposed length of each threaded steel bar 33 consistent. Let it stand and cure for at least two hours, and then check the firmness of the threaded steel bar 33 inside the hole.

[0058] Finally, cut the flat steel 34 to the length of the ALC wall panel 3; insert the flat steel 34 into the inside of the two rows of threaded steel 33, and press it tightly against the panel surface; weld from the middle to both ends to ensure a full weld; apply anti-rust paint after welding; it should be noted that if the flat steel 34 is installed in the groove 31 of the ALC wall panel 3, special mortar needs to be poured and cured in advance in the space formed by the groove 31 and the flat steel 34; this process significantly improves the wind pressure resistance and earthquake resistance of the ALC wall panel 3 at the window opening by embedding the threaded steel 33 150mm deep and welding it to the flat steel 34 to form an integral reinforcing rib.

[0059] S3. Install Adjustable Connection Component 1: First, mark the installation position lines of Adjustable Connection Component 1 at the location of the concrete beam or curb, ensuring that the corresponding position lines are in the same vertical plane.

[0060] Then drill two holes with a spacing of 200mm along the position line, and align the rectangular sleeve 152 of the limiting expansion tube 15 with the waist-shaped groove 131 of the mounting block B13, rotate 90° and insert it to fix it.

[0061] Next, mounting blocks A12 and B13 are fixed with expansion bolts (during the fixing process, the expansion bolts engage with the oblique tooth groove 14 to enhance the anti-loosening ability); if there is a deviation in the hole spacing, adjust the position of the limiting expansion tube 15 in the waist-shaped groove 131 to ensure that the distance between mounting blocks A12 and B13 is accurate.

[0062] Finally, the horizontal end face of angle steel 11 is welded and fixed to mounting blocks A12 and B13; ensuring that angle steel 11 is perpendicular to the concrete structure; mounting blocks A12 and B13 are respectively fixed to angle steel 11 by engaging with expansion bolts through oblique tooth grooves 14, effectively preventing the expansion bolts from loosening, enhancing the stability of the node under dynamic loads, and the sliding limit expansion tube 15 has strong construction adaptability, allowing a hole spacing deviation of ±20mm when drilling mounting blocks A12 and B13, thereby achieving the primary positioning of ALC wall panel 3 through the action of adjustable connection component 1.

[0063] S4. Install the limiting and blocking system: First, install the blocking plate 111 through the bolt holes on both sides of the horizontal end face of the angle steel 11, keeping the two blocking plates 111 facing each other, for lateral limiting of a single ALC wall panel 3; it should be noted that if multiple ALC wall panels 3 are spliced ​​together, the blocking plate 111 does not need to be installed at the joint.

[0064] Then, insert an L-shaped block 21 into the T-shaped groove 113 at the vertical end of the angle steel 11, and install a blocking strip 22 between the two corresponding L-shaped blocks 21; fix the L-shaped block 21 to the concrete beam with expansion bolts to enhance the overall frame strength.

[0065] Finally, when splicing multiple ALC wall panels 3, positioning pins need to be inserted into the pin holes 112 of adjacent angle steels 11 to connect them into one piece; ensuring that all angle steels 11 are on the same plane, which facilitates the subsequent flat installation of ALC wall panels 3, greatly improves the first-time installation qualification rate and reduces the later adjustment process; the blocking strip 22 connects the upper and lower angle steels 11 into one piece, realizing the secondary positioning and side support function of the side wall position during the installation of ALC wall panels 3.

[0066] S5. Installation and fixing of ALC wall panel 3: First, use nylon slings to hoist the pre-treated ALC wall panel 3 and place it between the upper and lower angle steels 11, within the limit range of the side blocking plates 111 and blocking strips 22; and temporarily fix the bottom of the ALC wall panel 3 with wooden wedges.

[0067] Then, drill holes at the corresponding positions on the angle steel 11, install hook bolts, the bolts penetrate through the ALC wall panel 3, the hook claws are clamped on the outer wall of the angle steel 11, add sleeves and washers to the threaded end and tighten the nuts (it should be noted that a sleeve is added to the threaded end of the hook bolt to distribute the pressure generated during tightening and avoid local squeezing damage to the ALC wall panel 3); weld the hook claws of the hook bolt to the angle steel 11 on both sides to enhance the connection strength.

[0068] Finally, if there are multiple ALC wall panels 3, the joint blocking plate 111 needs to be removed; after applying special mortar to the grooves 31 and protrusions 32 on the surface of the ALC wall panels 3, they should be joined together, and the width of the vertical joint should be controlled to about 5mm; ensure that the joint is flat and vertical.

[0069] It should be noted that the above-mentioned integrated installation process greatly shortens the on-site operation time, makes all connection nodes visible, facilitates quality inspection and subsequent maintenance, and achieves safe, efficient, precise and green construction of ALC wall panels for window openings through prefabrication, modularization and adjustable design, which has significant technical and economic benefits and promotional value.

[0070] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0071] Furthermore, the terms "first," "second," "number one," and "number two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0072] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0073] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A construction method for a combined ALC window opening exterior wall structure, characterized in that, Completed by a combined ALC window opening exterior wall structure, including: Several sets of adjustable connection components are fixed to the concrete beams of the main building structure by expansion bolts, and each set of adjustable connection components on the left and right sides is engaged by locating pins. Several limiting and blocking components are connected to the concrete beam and positioned and connected to an adjustable connection assembly, which includes a blocking strip; At least one ALC wall panel is connected to an adjustable connection assembly by several hook bolts, and the hook bolts and the adjustable connection assembly are further connected by welding. Before splicing the ALC wall panels, the side walls of the ALC wall panels at the window positions are reinforced with rebar. Two rows of threaded steel bars are installed along the height direction. Each rebar installation point between the two rows of threaded steel bars is staggered. Flat steel bars are welded together between the two rows of threaded steel bars. During the installation of ALC wall panels, the primary positioning is achieved by installing adjustable connection components on the concrete beam. Then, the upper and lower adjustable connection components are connected as a whole by installing blocking strips. The ALC wall panels are then positioned and supported by the blocking strips. The adjustable connection assembly includes an angle steel, and T-shaped grooves are symmetrically arranged on the outer side of the vertical end face of the angle steel; The limiting and blocking component includes an L-shaped block and a blocking strip connected to the L-shaped block. The L-shaped block is slidably disposed in a T-shaped groove. The blocking strip is connected between two L-shaped blocks that are opposite each other. The L-shaped block is fixed to the concrete beam by expansion bolts. The construction method for the combined ALC window opening exterior wall structure includes the following steps: S1. Construction preparation: Draw ALC wall panel layout and rebar installation diagram according to the design drawings, and prepare the corresponding materials and tools; S2, ALC wall panel pretreatment: Drill holes, clean holes, inject adhesive and insert threaded steel bars at the predetermined positions of ALC wall panels in an alternating pattern. After curing, weld flat steel bars and all threaded steel bars into a whole to form reinforcing ribs. S3. Install the adjustable connection components: Mark the installation position lines on the concrete beam and drill holes. After completion, install and fix the adjustable connection components with expansion bolts. S4. Install the limit blocking system: fix the blocking strip to the angle steel; S5. ALC wall panel installation and fixing: Hoist the pre-treated ALC wall panel between the upper and lower angle steels, connect and lock it to the angle steels using hook bolts, and then weld the hook end of the hook bolt to the angle steel.

2. The construction method of a combined ALC window opening exterior wall structure according to claim 1, characterized in that, The horizontal end face of the angle steel is symmetrically welded with mounting block A and mounting block B respectively. The center of mounting block A is provided with a stepped circular groove, and the center of mounting block B is provided with a stepped waist-shaped groove. The stepped side wall of the waist-shaped groove is provided with a sliding groove. The inside of the waist-shaped groove is provided with a limiting expansion tube, which is slidably locked in the groove of the waist-shaped groove; The mounting block A, mounting block B, and limiting expansion tube are respectively fixed to the concrete beam by expansion bolts that pass through the circular groove and the waist-shaped groove.

3. The construction method of a combined ALC window opening exterior wall structure according to claim 2, characterized in that, The outer side of the stepped surface of the circular groove and the waist-shaped groove, as well as the top surface of the limiting expansion tube, are provided with mutually cooperating oblique tooth grooves.

4. The construction method of a combined ALC window opening exterior wall structure according to claim 2, characterized in that, Bolt holes are provided on both sides of the horizontal end face of the angle steel. A baffle plate is detachably installed in the bolt hole by bolts, and the two baffle plates are arranged opposite each other.

5. The construction method of a combined ALC window opening exterior wall structure according to claim 2, characterized in that, The angle steel has pin holes on both its left and right outer walls, and the angle steels on the left and right sides are connected by positioning pins inserted into the pin holes.

6. The construction method of a combined ALC window opening exterior wall structure according to claim 1, characterized in that, The ALC wall panel has a groove and a groove on its two vertical sides, and two adjacent ALC wall panels are fitted together by the groove and the groove.

7. The construction method of a combined ALC window opening exterior wall structure according to claim 2, characterized in that, The limiting expansion tube consists of a tube and a rectangular sleeve, with a serrated groove on the upper end face of the rectangular sleeve.

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