A turnover positioning tool and a method for using the same, and an ALC wallboard construction method

Abstract

The application discloses a kind of turnover positioning tool and its using method, ALC wallboard construction method, belong to building construction technical field, tool includes plate bottom positioning piece and plate top positioning piece;Plate bottom positioning piece includes support component and the lifting component of adjusting support component vertical height;Plate top positioning piece includes adjusting component and is used for the clamping component of clamping ALC wallboard and structure coupling beam.Using method includes: S1, install turnover positioning tool;S2, temporarily fixed wallboard;S3, adjust wallboard bottom surface elevation and perpendicularity;S4, wallboard anchoring.Construction method includes: S01, measurement and setting-out;S02, wallboard layout;S03, wallboard installation;S04, gap filling and disassembly turnover positioning tool;S05, board joint crack resistance treatment.Effective to avoid quality defects such as damage wallboard, wall surface perpendicularity and flatness deficiency, installation process is simple, precision is high, can effectively reduce construction cost, replaces traditional wooden wedge support method process, promotes engineering quality and benefit.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building construction, in particular to a turnover positioning tool and a method thereof, and an ALC wallboard construction method. BACKGROUND

[0002] ALC wallboard (autoclaved lightweight concrete wallboard) is a kind of porous concrete board material made of cement, silica sand and other main raw materials, reinforced by rust-proof treated steel bars, and cured by high temperature and high pressure steam. It has the advantages of light weight, high strength, heat and sound insulation, strong anti-seismic force, fire and flame resistance, anti-freezing and anti-permeability, economy, environmental protection, and convenient construction. As a new type of green and environmentally friendly wall material, it is simple and fast to construct and easy to install. It can be sawed, cut, planed, drilled, and has fast construction speed, good surface quality, no hollowing and cracking phenomenon, and is suitable for use as a multi-storey, high-rise building interior partition wall, exterior wall, roof board and small span floor, and has broad development prospects.

[0003] Generally, the specifications of ALC wallboard are 600mm wide, 75-200mm thick, and less than 4000mm long. During on-site installation of ALC wallboard, the connection and fixation of the board and beam or wall column are mainly achieved by U-shaped clamps, pipe clamps, right-angle components and bolts. The general operation method is as follows: arrange U-shaped clamps according to the wall position line measured and laid on the base layer, and set one U-shaped clamp at each of the bottom and top joints of each ALC wallboard. Connect the U-shaped clamps with the base layer concrete beam by nailing, then stand the ALC wallboard up according to the base line, install the bottom of the ALC wallboard in the U-shaped clamp at the bottom, pry up the bottom of the ALC wallboard with a crowbar, pad it up with a triangular wedge by 20mm and temporarily fix it, install the top of the ALC wallboard in the U-shaped clamp at the top, check and adjust the positioning, fill the 20mm wide gap reserved at the top and bottom of the board with special jointing mortar, and remove the wedge after 3-5 days. Fill the wedge hole with polymer mortar.

[0004] However, the above construction method has many problems: 1. When using the wedge support method to support the ALC wallboard, the installation precision is poor, the bottom of the board cannot be accurately adjusted and leveled, and manual prying with a crowbar is required, which may damage the ALC wallboard during prying, causing corner defects and affecting the quality of the wall surface, increasing the wall repair work. 2. After the jointing mortar in the gap at both ends of the board reaches the strength, it is difficult to remove the temporarily embedded triangular wedge, which may damage the board or cause displacement of the wall, and the wedge hole repair increases the additional cost. 3. When using the U-shaped clamp fixation method, the one-time material cost is high, the U-shaped clamp is generally 60mm high and the length is equal to the thickness of the ALC wall, the installation space is small and it is difficult to position, and once the positioning is deviated, it cannot be adjusted, which may cause quality problems such as poor verticality and flatness of the wall surface, resulting in additional cost for handling defects. SUMMARY

[0005] The application aims to solve the above technical problems, and provides a turnover positioning tool and a use method thereof, and an ALC wallboard construction method. The turnover positioning tool has the functions of supporting the wallboard, temporary reinforcement, accurate positioning, fine adjustment, etc. The turnover positioning tool is simple in structure, convenient to operate, safe and stable, and can be used repeatedly. The installation precision is high, and the wallboard can be effectively prevented from being damaged. The quality defects such as poor perpendicularity and flatness of the wall surface can be avoided. The use method reduces the material consumption by using the angle steel anchoring method, reduces the construction cost, is energy-saving and environment-friendly, and has good popularization value. The ALC wallboard construction method replaces the traditional wooden wedge supporting method, simplifies the construction process, realizes the second structure wall without plastering, reduces the wet operation on site, and promotes the improvement of the overall quality and benefits of the fabricated structure engineering.

[0006] To achieve the above-mentioned purpose, the application provides the following scheme: the application discloses a turnover positioning tool, which comprises a bottom positioning part and a top positioning part. The bottom positioning part comprises a supporting member for supporting the bottom of an ALC wallboard and a lifting member for adjusting the vertical height of the supporting member. The top positioning part comprises an adjusting member located between the top of the ALC wallboard and a structural beam and a clamping member for clamping the ALC wallboard and the structural beam, and the clamping member is arranged on the adjusting member.

[0007] Preferably, the supporting member comprises a cross-shaped support frame formed by welding two longitudinal steel bars and two transverse steel bars.

[0008] Preferably, the lifting member comprises a positioning nut fixed at the two ends of the transverse steel bar and an adjusting bolt threadedly connected to the adjusting nut, and the adjusting bolt is perpendicular to the cross-shaped support frame.

[0009] Preferably, the adjusting member comprises a stud, the clamping member comprises an adjusting nut threadedly connected to the threaded heads at the two ends of the stud, and two arc-shaped spring steel sheets are located between the adjusting nuts, and the arc-shaped spring steel sheets are provided with a sleeving hole for sleeving the stud.

[0010] A use method of the above-mentioned turnover positioning tool is also disclosed, which comprises the following steps:

[0011] S1, installing the turnover positioning tool: arranging the bottom positioning part at the middle of the pre-installed position of the ALC wallboard, and lowering the supporting member to the floor base layer through the lifting member;

[0012] S2, temporarily fixing the wallboard: placing the middle of the ALC wallboard on the supporting member, passing the adjusting member through the reserved joint between the top of the ALC wallboard and the structural beam, and slightly clamping the top of the ALC wallboard and the structural beam by the clamping member.

[0013] S3, adjusting the elevation and verticality of the wallboard bottom: adjusting the height of the supporting member by the lifting member, lifting the wallboard, making the gap between the bottom of the ALC wallboard and the floor base layer reach the preset height, detecting the verticality of the ALC wallboard, if the verticality is insufficient, loosening the clamping member and righting the ALC wallboard, then clamping the top of the ALC wallboard and the structural beam tightly, if the verticality is sufficient, directly clamping the top of the ALC wallboard and the structural beam tightly, thus completing the fine positioning of the ALC wallboard;

[0014] S4, wallboard anchoring: fixing the ALC wallboard with the floor base layer and the structural beam by using the right-angle steel piece.

[0015] Preferably, in step S3, the adjusting bolt is rotated by using a wrench, the ALC wallboard is lifted by the cross-shaped support frame, a 20mm gap is reserved between the bottom of the ALC wallboard and the floor base layer, after the elevation of the wallboard is adjusted, the verticality of the ALC wallboard is reviewed by using a detection ruler, when there is deviation, the verticality of the ALC wallboard is adjusted by the arc spring steel sheet and the adjusting nut at both ends of the stud bolt, the adjusting nut on one side of the ALC wallboard in the inclined direction is loosened, the adjusting nut on the other side is tightened, thus the verticality of the ALC wallboard is accurately adjusted until it meets the specification requirements.

[0016] Preferably, in step S4, one right-angle steel piece is fixed on the top and the bottom of the ALC wallboard by using two self-tapping screws with a diameter of 6mm respectively, then the right-angle steel pieces are anchored and connected with the floor base layer and the top beam respectively by using galvanized anchor bolts.

[0017] Also disclosed is an ALC wallboard construction method, comprising the following steps:

[0018] S01, measurement and setting out: setting out the wall edge line and control line, door and window hole size and other detailed dimensions on the floor base layer according to the design drawing, guiding and measuring the wall edge line to the shear wall, column and structural beam by using an infrared level, and determining the position of the ALC wallboard and the installation turnover positioning tool;

[0019] S02, wallboard layout: laying out the ALC wallboard according to the design drawing before installation, laying out from the door hole to the two ends in turn, applying the whole plate to install the door hole side, and installing the wall body from one end to the other end in sequence when there is no door hole, and cutting the ALC wallboard for adjustment when the modulus does not meet the requirements;

[0020] S03, wallboard installation: installing the ALC wallboard according to the layout sequence according to the above-mentioned use method;

[0021] S04, gap filling and disassembly turnover positioning tool: the rigid vertical joint extrusion method is used between adjacent ALC wallboards; the next piece of ALC wallboard is installed after being pasted with polymer anti-cracking mortar, and the mortar in the joint between the ALC wallboards is extruded, and the joint width is 5mm; after all the ALC wallboards are fixed, the top positioning piece is disassembled, the gap between the top of the ALC wallboard and the structure coupling beam is filled with PU foaming agent, and the outside is filled with special caulking mortar; the gap between the bottom of the ALC wallboard and the floor base is filled with fine stone concrete, and the bottom positioning piece is not filled in the range of the bottom positioning piece; after the bottom fine stone concrete reaches the strength of 3 days, the bottom positioning piece is disassembled, and the position of the bottom positioning piece is filled with fine stone concrete.

[0022] S05, joint anti-cracking treatment: the ALC wallboard is installed for more than one week, and 200mm wide and 5mm thick polymer anti-cracking mortar is pasted at the joint according to the conventional process, and alkali-resistant glass fiber mesh is pressed in, and the width of the alkali-resistant glass fiber mesh is 200mm, and the alkali-resistant glass fiber mesh is arranged in the middle of the joint.

[0023] Preferably, the width of a single ALC wallboard is a standard width of 600mm, the top and bottom of the ALC wallboard are each reserved a gap of 20mm wide between the structure coupling beam and the floor base, and the minimum cutting width of the ALC wallboard is not less than 200mm.

[0024] Preferably, it further comprises the step S00 of cleaning the floor base of sundries: the floating slurry and the fallen ash are cleaned away with a chisel or a steel wire brush, and the floating slurry is swept and washed clean with a broom; the ALC wallboard at the height of 300mm of the cast-in-place concrete reverse ridge is pre-set at the toilet and the water heating well which are prone to water immersion.

[0025] The present application has the following technical effects relative to the prior art:

[0026] 1. The present application develops a turnover positioning tool for ALC wallboard installation, which has the functions of supporting the wallboard, temporary reinforcement, accurate positioning, fine adjustment, etc., has the characteristics of simple structure, convenient operation, safety and stability, turnover generalization, etc., has high installation precision, and avoids damaging the wallboard, effectively preventing quality defects such as poor perpendicularity and flatness of the wall surface.

[0027] 2. The use method of the turnover positioning tool of the present application not only makes the installation of ALC wallboard simple, but also realizes the anchoring connection of ALC wallboard with the main structure under the condition of accurate adjustment and positioning, has high installation precision, and the on-site installation and disassembly of the turnover positioning tool is simple and fast, the support is stable, the turnover positioning tool can be used repeatedly, the straight steel piece method anchoring reduces the material consumption, reduces the construction cost, saves energy and protects the environment, and has good popularization value.

[0028] 3. The ALC wallboard construction method of the present application replaces the traditional wooden wedge support installation process, simplifies the construction process, not only avoids damaging the wallboard, effectively prevents quality defects such as poor verticality and flatness of the wall surface, but also realizes secondary structure wall body free of plastering, reduces on-site wet work, and promotes the overall quality and benefit improvement of the fabricated structure engineering. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0030] Figure 1 is a process diagram for a turnover positioning tool;

[0031] Figure 2 is a top view of a plate bottom positioning member;

[0032] Figure 3 is a front view of a plate bottom positioning member;

[0033] Figure 4 is a front view of a plate top positioning member;

[0034] Figure 5 is a fixing treatment diagram of ALC wallboard and structure beam;

[0035] Figure 6 is a structural schematic diagram of a right-angle steel member;

[0036] Figure 7 is a schematic diagram of ALC wallboard arrangement.

[0037] Explanation of reference signs: 1, plate bottom positioning member; 2, plate top positioning member; 3, cross-shaped support frame; 4, positioning nut; 5, adjusting bolt; 6, double-headed bolt; 7, adjusting nut; 8, arc spring steel sheet; 9, structure beam; 10, ALC wallboard; 11, floor base layer; 12, right-angle steel member; 13, self-tapping screw; 14, galvanized anchor bolt; 15, PU foaming agent; 16, special-purpose jointing mortar; 17, alkali-resistant glass fiber mesh. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present application will be described below in a clear and complete manner with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0039] Example 1

[0040] This embodiment provides a turnover positioning fixture, such as Figures 1 to 4 As shown, the system includes a bottom positioning component 1 and a top positioning component 2. The bottom positioning component 1 includes a supporting member and a lifting member. The supporting member supports the bottom of the ALC wall panel 10 and can be a planar structure such as a support plate or support frame. The lifting member adjusts the vertical height of the supporting member and can use various lifting devices, such as hydraulic cylinders, pneumatic cylinders, screws, or bolts. The top positioning component 2 includes an adjusting member and a clamping member. The clamping member is mounted on the adjusting member and is located between the top of the ALC wall panel 10 and the structural connecting beam 9. The clamping member clamps the ALC wall panel 10 and the structural connecting beam 9 for temporary fixation. In practical use, the supporting component is first lowered onto the floor slab base 11 using the lifting component, and the bottom of the ALC wall panel 10 is placed on the supporting component. Then, the adjusting component is placed between the top of the ALC wall panel 10 and the structural connecting beam 9, and the clamping component is used to slightly clamp the top of the ALC wall panel 10 and the structural connecting beam 9. Then, the height of the supporting component is adjusted, and the ALC wall panel 10 is lifted by the supporting component. When the gap between the ALC wall panel 10 and the floor slab base 11 reaches the preset height, the clamping component is locked to complete the positioning. This rotating positioning tool is not only easy to adjust and has high installation accuracy, but also will not damage the ALC wall panel 10 like a pry bar. After the mortar of the ALC wall panel 10 reaches its strength, the bottom positioning component 1 can be easily removed by lowering the height of the supporting component. There is no problem of difficulty in removing the triangular wooden wedge, and thus no problem of damaging the board or causing wall displacement due to hard chiseling and pulling. Meanwhile, if there is a deviation after positioning, the ALC wall panel 10 can be straightened by loosening the clamping components and then tightening the clamping components to solve quality problems such as poor wall verticality and flatness.

[0041] In this embodiment, as Figures 1 to 4 As shown, the supporting component includes a grid-shaped support frame 3, which is welded together from two longitudinal steel bars and two transverse steel bars. Preferably, both the longitudinal and transverse steel bars are made of ￠12 steel bars, the longitudinal steel bars are 150mm long, and the lengths of the two transverse steel bars are the wall thickness of the ALC wall panel 10 + 50mm.

[0042] Furthermore, in this embodiment, as Figures 1 to 4As shown, the specific lifting member includes a positioning nut 4 and an adjusting bolt 5. The positioning nut 4 is fixed at both ends of the transverse steel bar, and the adjusting bolt 5 is threadedly connected to the positioning nut 4, and the adjusting bolt 5 is perpendicular to the well-shaped support frame 3. The threaded head of the adjusting bolt 5 is stood on the floor base 11, and the ALC wallboard 10 is placed on the well-shaped support frame 3. By rotating the adjusting bolt 5, the height of the well-shaped support frame 3 can be changed, so as to adjust the height of the ALC wallboard 10. As preferred, the positioning nut 4 can adopt an M12 nut, and the adjusting bolt 5 can adopt an external hexagonal bolt.

[0043] Further, in the embodiment, as shown in Figures 1 to 4 , the adjusting member includes a stud 6. The clamping member includes two adjusting nuts 7 and two arc-shaped spring steel sheets 8, and the arc-shaped spring steel sheets 8 are provided with sleeving holes. The two adjusting nuts 7 are threadedly connected to both ends of the stud 6, the arc-shaped spring steel sheets 8 are sleeved on the stud 6 through the sleeving holes, and the two arc-shaped spring steel sheets 8 are oppositely arranged and located between the two adjusting nuts 7. After the two arc-shaped spring steel sheets 8 are respectively attached to the top of the ALC wallboard 10 and the structural coupling beam 9, the adjusting nuts 7 are rotated to adjust the clamping degree of the two arc-shaped spring steel sheets 8 to the top of the ALC wallboard 10 and the structural coupling beam 9. After the adjusting nuts 7 are unscrewed, the arc-shaped spring steel sheets 8 are removed, and the stud 6 is also conveniently pulled out from between the top of the ALC wallboard 10 and the structural coupling beam 9. As preferred, the stud 6 adopts an M12 bolt, the length of the stud 6 is the wall thickness of the ALC wallboard 10 + 80 mm, and the adjusting nut 7 adopts an M12 nut.

[0044] Embodiment 2

[0045] The embodiment provides a use method of the turnover positioning tool as in the embodiment 1, as shown in Figures 1 to 6 , the method comprises the following steps:

[0046] S1, installing the turnover positioning tool: the plate bottom positioning piece 1 is arranged at the middle part of the pre-installed position of the ALC wallboard 10, and the supporting member is lowered to the floor base 11 through the lifting member;

[0047] S2, temporarily fixing the wallboard: the middle part of the ALC wallboard 10 is placed on the supporting member, the adjusting member is passed through the reserved gap between the top of the ALC wallboard 10 and the structural coupling beam 9, and then the clamping member slightly clamps the top of the ALC wallboard 10 and the structural coupling beam 9 to be temporarily fixed;

[0048] S3, adjusting the elevation and verticality of the wallboard bottom: the height of the supporting member is adjusted by the lifting member, the ALC wallboard 10 is lifted by the supporting member, the gap height between the bottom of the ALC wallboard 10 and the floor base 11 reaches the preset height, the verticality of the ALC wallboard 10 is checked, if the verticality is insufficient, the clamping member is loosened and the ALC wallboard 10 is righted, then the clamping member is fully clamped on the top of the ALC wallboard 10 and the structural beam 9, if the verticality is sufficient, the clamping member is directly fully clamped on the top of the ALC wallboard 10 and the structural beam 9, and the fine positioning of the ALC wallboard 10 is completed;

[0049] S4, wallboard anchoring: the bottom and top of the ALC wallboard 10 are fixed with the floor base 11 and the structural beam 9 respectively by using the right-angle steel 12.

[0050] In this embodiment, as shown in the figure, Figures 1 to 6 in step S3, the wrench is used to rotate the adjusting bolt 5, the ALC wallboard 10 is lifted by the cross-shaped support frame 3, a 20mm gap is reserved between the bottom of the ALC wallboard 10 and the floor base 11, and the lifting height of the adjusting bolt 5 needs to be ensured to be the same during adjustment. After the elevation of the wallboard is adjusted to the right position, the verticality of the ALC wallboard 10 is reviewed by using the detection ruler, when there is a deviation, the verticality of the ALC wallboard 10 is adjusted by the arc spring steel sheet 8 and the adjusting nut 7 at both ends of the stud 6, the adjusting nut 7 on one side of the ALC wallboard 10 in the inclined direction is loosened, and the adjusting nut 7 on the other side is tightened, so that the verticality of the ALC wallboard 10 can be accurately adjusted until it meets the specification requirements.

[0051] Further, in this embodiment, as shown in the figure, Figures 1 to 6 in step S4, one right-angle steel 12 is fixed on the top and bottom of the ALC wallboard 10 respectively by using two self-tapping screws 13 with a diameter of 6mm, and then the right-angle steel 12 is anchored and connected with the floor base 11 and the top beam 9 respectively by using the galvanized anchor bolt 14. Specifically, the bolt hole is pre-started on the galvanized anchor bolt 14.

[0052] Embodiment 3

[0053] This embodiment provides an ALC wallboard construction method, as shown in the figure, Figures 1 to 7 which comprises the following steps:

[0054] S01, measurement and line laying: according to the design drawing, the wall edge line and control line, door and window hole size and other detailed dimensions are laid out on the floor base 11, the wall edge line is introduced and measured to the shear wall, column and structural beam by using the infrared level, and the position of the ALC wallboard 10 and the installation turnover positioning tool in embodiment 1 is determined;

[0055] S02, wallboard layout: according to the design drawing, the layout of the ALC wallboard 10 is arranged before installation, and the layout is arranged from the door hole to the two ends in turn. The whole plate is installed at the door hole side, and the wall body without door hole should be installed from one end to the other end in sequence. When the modulus does not meet the requirements, the ALC wallboard 10 can be cut and adjusted.

[0056] S03, wallboard installation: the installation of the ALC wallboard 10 is carried out according to the layout sequence according to the use method in example 2;

[0057] S04, gap filling and disassembly turnover positioning tool: the rigid vertical joint extrusion method is used for construction between adjacent ALC wallboards 10. After the next ALC wallboard 10 is pasted with polymer anti-cracking mortar, it is installed in position with the last fixed ALC wallboard 10, and the mortar in the joint between the ALC wallboards 10 is extruded, and the joint width is 5mm; after all the ALC wallboards 10 are fixed, the top positioning piece 2 is disassembled, the gap between the top of the ALC wallboard 10 and the structure beam 9 is filled with PU foaming agent 15, and the outside is filled with special caulking mortar 16; the gap between the bottom of the ALC wallboard 10 and the floor base 11 is filled with fine stone concrete, and the range of the bottom positioning piece 1 is not filled temporarily. After the strength of the bottom fine stone concrete reaches 3 days, the bottom positioning piece 1 is disassembled, and the position of the bottom positioning piece 1 is filled with fine stone concrete; the disassembled bottom positioning piece 1 and top positioning piece 2 are collected and cleaned in time for turnover use;

[0058] S05, joint anti-cracking treatment: after the ALC wallboard 10 is installed for more than one week, 200mm wide and 5mm thick polymer anti-cracking mortar is applied to the joint according to the conventional process, and alkali-resistant glass fiber mesh 17 is pressed into the joint. The width of the alkali-resistant glass fiber mesh 17 is 200mm, and the alkali-resistant glass fiber mesh 17 is arranged in the middle of the joint.

[0059] In this embodiment, as shown in Figures 1 to 7 , the width of a single ALC wallboard 10 is a standard width of 600mm, the top of the ALC wallboard 10 is reserved with a gap of 20mm wide with the structure beam 9, the bottom of the ALC wallboard 10 is reserved with a gap of 20mm wide with the floor base 11, and the minimum cutting width of the ALC wallboard 10 is not less than 200mm.

[0060] Further, in this embodiment, as shown in Figures 1 to 7 , it further includes the step S00, cleaning the floor base of sundries: the floating slurry and the fallen ash are cleaned with a chisel or a steel wire brush, and the floating slurry is swept and washed clean with a broom; the ALC wallboard 10 at the toilet and water heating well is pre-set with a 300mm high cast-in-place concrete reverse ridge.

[0061] The principles and implementation manners of the present application are described by using specific examples in the present application, and the above examples are only used for helping to understand the method of the present application and its core idea; meanwhile, for the general technical personnel in the art, according to the idea of the present application, the specific implementation manners and application ranges will be changed. In conclusion, the content of the present specification should not be understood as the limitation of the present application.

Claims

1. A turnover positioning fixture, characterized in that, The system includes a bottom positioning component and a top positioning component. The bottom positioning component includes a supporting member for supporting the bottom of the ALC wall panel and a lifting member for adjusting the vertical height of the supporting member. The top positioning component includes an adjusting member located between the top of the ALC wall panel and the structural connecting beam, and a clamping member for clamping the ALC wall panel and the structural connecting beam. The clamping member is disposed on the adjusting member. The adjusting member includes a double-ended bolt, and the clamping member includes adjusting nuts bolted to the threaded heads at both ends of the double-ended bolt and two bow-shaped spring steel plates located between the adjusting nuts. The bow-shaped spring steel plates are provided with fitting holes for fitting onto the double-ended bolt.

2. The turnover positioning fixture according to claim 1, characterized in that, The supporting component includes a grid-shaped support frame welded together from two longitudinal steel bars and two transverse steel bars.

3. The turnover positioning fixture according to claim 2, characterized in that, The lifting component includes positioning nuts fixed at both ends of the transverse reinforcing bars and adjusting bolts threaded onto the positioning nuts, the adjusting bolts being perpendicular to the grid-shaped support frame.

4. A method of using the turnover positioning fixture as described in claim 3, characterized in that, Includes the following steps: S1. Install the turnover positioning fixture: Set the bottom positioning component of the panel in the middle of the pre-installation position of the ALC wall panel, and lower the supporting component to the floor base through the lifting component; S2. Temporary fixing of the wall panel: Place the middle part of the ALC wall panel on the supporting member, pass the adjusting member through the reserved gap between the top of the ALC wall panel and the structural connecting beam, and then use the clamping member to slightly clamp the top of the ALC wall panel and the structural connecting beam. S3. Adjust the bottom elevation and verticality of the wall panel: Adjust the height of the supporting component by lifting the lifting component. The supporting component lifts the wall panel up so that the gap between the bottom of the ALC wall panel and the floor slab base reaches the preset height. Check the verticality of the ALC wall panel. If the verticality is insufficient, loosen the clamping component and straighten the ALC wall panel. Then, the clamping component fully clamps the top of the ALC wall panel and the structural connecting beam. If the verticality is sufficient, directly clamp the top of the ALC wall panel and the structural connecting beam to complete the fine adjustment and positioning of the ALC wall panel. S4. Wall panel anchoring: Right-angle steel fittings are used to fix the ALC wall panel to the floor slab base and the structural connecting beam.

5. The method of use according to claim 4, characterized in that, In step S3, the adjusting bolt is rotated using a wrench, and the grid-shaped support frame lifts the ALC wall panel upward, leaving a 20mm gap between the bottom of the ALC wall panel and the floor slab base. After the wall panel elevation is adjusted to the correct position, the verticality of the ALC wall panel is checked with a measuring ruler. If a deviation occurs, it is adjusted using the bow-shaped spring steel plates at both ends of the double-ended bolt and the adjusting nut. Loosen the adjusting nut on one side of the ALC wall panel's tilt direction and tighten the adjusting nut on the other side to precisely adjust the verticality of the ALC wall panel until it meets the specifications.

6. The method of use according to claim 5, characterized in that, In step S4, two 6mm self-tapping screws are used to fix a right-angle steel member at the top and bottom of the ALC wall panel, and then galvanized anchor bolts are used to anchor the right-angle steel member to the floor slab base and the structural connecting beam respectively.

7. A method for constructing ALC wall panels, characterized in that, Includes the following steps: S01. Measurement and layout: According to the design drawings, mark the wall edge lines and control lines, and the detailed dimensions of door and window openings on the floor slab base. Use an infrared level to transfer the wall edge lines to the shear walls, columns and structural beams to determine the position of ALC wall panels and installation and turnover positioning fixtures. S02. Wall panel layout: Before installation, the ALC wall panels shall be laid out according to the design drawings. The layout shall start from the door opening and proceed to both ends in sequence. The door opening edge shall be installed with whole panels. For walls without door openings, the panels shall be installed sequentially from one end to the other. If the module does not meet the requirements, the ALC wall panels can be cut to adjust. S03. Wall panel installation: Install the ALC wall panels according to the layout sequence as described in claim 6. S04. Gap Filling and Dismantling / Positioning Fixtures: Rigid vertical joint grouting is used between adjacent ALC wall panels. After applying polymer-resistant crack-resistant mortar to the next ALC wall panel, it is aligned and installed with the previously fixed ALC wall panel, squeezing out the mortar from the joint between the ALC wall panels. The joint width is 5mm. After all ALC wall panels are fixed, the top positioning piece is removed. The gap between the top of the ALC wall panel and the structural connecting beam is filled with PU foam, and the outside is filled with special caulking mortar. The gap between the bottom of the ALC wall panel and the floor slab base is filled with fine aggregate concrete. The area within the bottom positioning piece is not filled temporarily. After the bottom fine aggregate concrete reaches a strength of 3 days, the bottom positioning piece is removed, and the position of the bottom positioning piece is leveled with fine aggregate concrete. S05. Crack-resistant treatment of panel joints: After the ALC wall panels have been installed and stabilized for more than a week, apply a 200mm wide and 5mm thick polymer crack-resistant mortar to the panel joints according to conventional procedures, and press in alkali-resistant fiberglass mesh. The alkali-resistant fiberglass mesh is 200mm wide and is centered along the panel joint.

8. The ALC wall panel construction method according to claim 7, characterized in that, The width of a single ALC wall panel is a standard width of 600mm. A 20mm wide gap is reserved between the top and bottom of the ALC wall panel and the structural connecting beam and the floor slab base. The minimum cutting width of the ALC wall panel is not less than 200mm.

9. The ALC wall panel construction method according to claim 7, characterized in that, It also includes step S00, cleaning debris from the floor slab base: cleaning away laitance and fallen mortar with a chisel or wire brush, sweeping away and rinsing the surface with a broom; bathrooms and water wells are prone to water immersion, so a 300mm high cast-in-place concrete curb is set at the pre-set location of the ALC wall panel in the bathroom and water well.

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