Frame building double-layer AAC external wall panel window opening node construction method and reinforcing structure thereof

Abstract

The invention provides a frame building double-layer AAC external wall panel window opening node construction method. The method comprises the following steps of structural construction, embedded part embedding, AAC external wall panel window opening node construction preparation, window opening keel welding and mounting, mounting of an L-shaped bracket, a hook bolt and angle steel, AAC external wall panel mounting and AAC external wall panel window opening node keel filling with a heat preservation material. The invention further discloses a window opening node structure of the double-layer AAC external wall panel of the frame building. The window opening node structure comprises the high-pass vertical keels on the two sides, the upper horizontal keels, the lower horizontal keels, the pulling vertical keels, the supporting vertical keels, the AAC external wall panel on the window opening, the structural steel beam and the floor support plate embedded plate. The top ends and the bottom ends of the two-side through-height vertical keels are welded and fixed to the structural steel beam and the floor support plate embedded plate correspondingly, and the upper horizontal keel and the lower horizontal keel are fixedly connected with the upper portion and the lower portion of the two-side through-height vertical keels correspondingly and fixedly connected with the structural steel beam and the floor support plate through the pulling vertical keels and the supporting vertical keels. The problem of forming the ultra-wide window hole in the double-layer AAC external wall panel is solved.

Description

Technical Field

[0001] The invention relates to the technical field of building curtain walls, and in particular to a construction method for a frame building AAC exterior wall panel window opening node and a reinforcement structure thereof. Background Art

[0002] AAC / ALC is the abbreviation of Autoclaved Lightweight Concrete, which is mainly made of silica sand (quartz sand), cement, lime, aluminum paste or aluminum powder. AAC / ALC autoclaved aerated concrete products are equipped with double-layer steel mesh welded with anti-corrosion treatment, and are made of porous concrete forming panels cured by high-pressure steam (the panels need to be reinforced with treated steel bars); they can be used as wall materials and roof panels, and are a new type of building material with superior performance. This product has passed the environmental management system certification (national accreditation registration number 02504E10004E).

[0003] AAC wall panels have outstanding advantages of energy saving and environmental protection. They are a new type of lightweight green and environmentally friendly wall material with superior performance. At present, AAC wall panels are used in exterior wall panels, interior wall panels, floor panels and roof panels in building construction. In the project, the exterior wall panels of the building are designed and installed according to the "Autoclaved Aerated Concrete Block and Board Structure" Atlas 13J104, "Autoclaved Aerated Concrete Board Maintenance System for Prefabricated Buildings" Atlas 19CJ85-1, "Autoclaved Lightweight Aerated Concrete Board (NAAC / ALC) Structure Detail" Atlas 03SG715-1, "Autoclaved Aerated Concrete Wall Panel System Application Technical Code" DB11 / T 2003-2022. However, when designing, constructing and installing according to the above atlases, the design size of the window opening on the double-layer AAC exterior wall panel of the frame structure is much smaller than the size of the window opening designed in the project. Summary of the invention

[0004] In order to overcome the problems encountered in actual projects, the present invention provides a high-rise building AAC exterior wall panel window hole node construction method and its reinforcement structure. The method can solve the problem of opening an oversized window on a double-layer AAC exterior wall panel of a frame structure.

[0005] A construction method for a double-layer AAC exterior wall window opening node of a frame building comprises the following steps: Step 1: Pre-embedded parts for structural construction: According to the AAC wall panel detailed drawing, determine the position of the full-height vertical keel at the exterior window opening, embed the full-height vertical keel embedded plate in the floor decking, determine the position of the supporting vertical keel, and embed the supporting vertical keel embedded plate in the floor decking; Step 2: AAC exterior wall panel window opening node construction preparation: check the layout and the position, elevation and quantity of the full-height vertical keel embedded plate and the supporting vertical keel embedded plate; Step 3, window opening keel welding: According to the AAC exterior wall panel deepening drawing, full-height vertical keels are set on both sides of the window opening, the lower end of the full-height vertical keel is welded and fixed to the full-height vertical keel embedded plate in the floor decking, and the upper end of the full-height vertical keel is welded and fixed to the structural steel beam. Upper horizontal keels and lower horizontal keels are set above and below the window opening, and the two ends of the upper horizontal keel are welded and fixed to the upper part of the full-height vertical keels on both sides, and the two ends of the lower horizontal keel are welded and fixed to the lower part of the full-height vertical keels on both sides; Step 4, window opening keel fixation: multiple tie vertical keels are arranged between the structural steel beam and the horizontal keel with a spacing of less than or equal to 1200mm, the upper end of the tie vertical keel is welded and fixed to the structural steel beam, and the lower end of the tie vertical keel is welded and fixed to the horizontal keel; multiple supporting vertical keels are arranged between the floor deck and the lower horizontal keel with a spacing of less than or equal to 1750mm, the upper end of the supporting vertical keel is welded and fixed to the lower horizontal keel, and the lower end of the supporting keel is welded and fixed to the supporting vertical keel embedded plate in the floor deck; the lower end of the full-height vertical keel is welded and fixed to the full-height vertical keel embedded plate in the floor deck; Step 5, fixation with L-shaped bracket, hook bolt and angle steel: L-shaped bracket is set in the middle position of each AAC exterior wall panel, and the L-shaped bracket is fixed on the upper horizontal keel at intervals of the width of the AAC exterior wall panel. The L-shaped bracket includes an outer leaf L-shaped bracket and an inner leaf L-shaped bracket. The outer leaf L-shaped bracket and the inner leaf L-shaped bracket are respectively welded and fixed on both sides of the upper horizontal keel. According to the AAC exterior wall panel deepening layout drawing, the angle steel is fixed on the upper horizontal keel at intervals of the AAC exterior wall panel width. The hook head of the hook head bolt is hooked on the angle steel, and the hook head bolt is fixed to the angle steel by welding. The angle steel includes an outer leaf angle steel and an inner leaf angle steel. The outer leaf angle steel and the inner leaf angle steel are respectively fixed to the upper horizontal keel according to the position of the hook head bolt. The hook head bolt includes an outer leaf hook head bolt and an inner leaf hook head bolt. The hook head of the outer leaf hook head bolt is welded and fixed to the outer leaf angle steel, and the hook head of the inner leaf hook head bolt is welded and fixed to the inner leaf angle steel. Step 6, filling the window opening keel with insulation material: the full-height vertical keels, upper horizontal keels, lower horizontal keels, multiple tie-joint vertical keels and multiple supporting vertical keels on both sides are hollow galvanized square steels, and the insulation material is filled into the hollow interior of the full-height vertical keels, upper horizontal keels, lower horizontal keels, multiple tie-joint vertical keels and multiple supporting vertical keels on both sides of the hollow galvanized square steels; Step 7, AAC exterior wall panel installation: AAC exterior wall panels are installed from both sides of the window opening to the middle of the window opening. AAC exterior wall panels include outer leaf panels, sandwich composite rock wool and inner leaf panels. First install the outer leaf panels, and the outer leaf panel support is lifted on the outer leaf L-shaped bracket. The outer leaf panel is tied to the upper horizontal keel through the outer leaf hook bolts and the outer leaf angle steel. Multiple outer leaf panels are placed on the outer leaf L-shaped brackets at different positions from both sides of the window opening to the middle of the window opening, and fixed on the outer leaf angle steels at different positions. The composite rock wool is fixed to the inner panel of the outer leaf panel by anchor nails. Finally, install the inner leaf panel. The inner leaf panel is lifted on the inner leaf L-shaped bracket, and the inner leaf panel is tied to the upper horizontal keel through the inner leaf hook bolts and the inner leaf angle steel. Multiple outer leaf panels are placed on the inner leaf L-shaped brackets at different positions from both sides of the window opening to the middle of the window opening, and fixed on the outer leaf angle steels at different positions.

[0006] Furthermore, in step 1, the embedded plates of the full-height vertical keels and the embedded plates of the supporting vertical keels are galvanized steel plates.

[0007] Furthermore, in step 2, the control lines and window opening position lines of the AAC exterior wall panels are measured, and the control lines of the AAC exterior wall panels are measured and set according to the structural control axis.

[0008] Furthermore, in step 3 and step 4, all welding fixation is carbon dioxide shielded welding fixation.

[0009] Further, in step 6, a through hole is opened in the AAC outer wall panel according to the position of the hook bolt, a groove is opened on the outer side of the AAC outer wall, and the outer side of the hook bolt is fixed with a metal gasket and a nut.

[0010] Further, in step 7, two 6mm circular holes are opened on the full-height vertical keels on both sides, the upper horizontal keel, the lower horizontal keel, the multiple tie vertical keels and the multiple supporting vertical keels at a distance of less than or equal to 1.2 meters, and the hollow interiors of the full-height vertical keels, the upper horizontal keel, the lower horizontal keel, the multiple tie vertical keels and the multiple supporting vertical keels made of galvanized hollow square steel are filled with insulation material through the circular holes, and the insulation material is B1 grade polyurethane foam.

[0011] The second technical solution provided by the present invention is: A frame building AAC exterior wall panel window opening node reinforcement structure, comprising a window opening keel, a tie vertical keel, a supporting vertical keel, an AAC exterior wall panel on the window opening, a structural steel beam and a floor decking embedded plate, wherein the floor decking embedded plate comprises a vertical keel embedded plate and a supporting vertical keel embedded plate, the window opening keel comprises two side full-height vertical keels, an upper horizontal keel and a lower horizontal keel, the top of the full-height vertical keel is fixedly connected to the structural steel beam, the bottom of the full-height vertical keel is fixedly connected to the vertical keel embedded plate, the two ends of the upper horizontal keel are connected to the two side full-height vertical keels by welding, the two ends of the lower horizontal keel are connected to the two side full-height vertical keels by welding, and a plurality of the supporting vertical keels are connected at a spacing of less than or equal to 1200mm Arranged between the structural steel beam and the horizontal keel, the top of the supporting vertical keel is fixedly connected to the lower horizontal keel, the lower end of the supporting vertical keel is fixedly connected to the supporting vertical keel embedded plate, multiple tie vertical keels are arranged between the floor decking and the lower horizontal keel with a spacing of less than or equal to 1750mm, the lower end of the tie vertical keel is fixedly connected to the upper horizontal keel, the upper end of the tie vertical keel is fixedly connected to the structural steel beam, the AAC exterior wall panel is fixedly connected to the upper horizontal keel by hook bolts, the top of the AAC exterior wall panel is fixedly connected to the structural steel beam by a U-shaped clip, the full-height vertical keels, the upper horizontal keel, the lower horizontal keel, multiple tie vertical keels and multiple supporting vertical keels on both sides are hollow galvanized square steels, and the hollow galvanized square steels are filled with insulation material.

[0012] Furthermore, it also includes angle steel and L-shaped brackets. The L-shaped bracket is arranged in the middle position of each AAC exterior wall panel. The L-shaped bracket is fixed to the upper horizontal keel at intervals of the width of the AAC exterior wall panel. The L-shaped bracket includes an outer leaf L-shaped bracket and an inner leaf L-shaped bracket. The outer leaf L-shaped bracket and the inner leaf L-shaped bracket are respectively welded and fixed to both sides of the upper horizontal keel. The angle steel is fixed to the upper horizontal keel at intervals of the width of the AAC exterior wall panel. The hook head of the hook head bolt is hooked on the angle steel. The hook head of the hook head bolt is fixed to the angle steel by welding. The angle steel includes an outer leaf angle steel and an inner leaf angle steel. The outer leaf angle steel and the inner leaf angle steel are symmetrically fixed to the upper horizontal keel inside and outside. The hook head bolt includes an outer leaf hook head bolt and an inner leaf hook head bolt. The hook head of the outer leaf hook head bolt is welded and fixed to the outer leaf angle steel, and the hook head of the inner leaf hook head bolt is welded and fixed to the inner leaf angle steel.

[0013] Furthermore, the AAC exterior wall panels are arranged in sequence from both sides of the window opening to the middle of the window opening, and the AAC exterior wall panels include outer leaf panels, interlayer composite rock wool and inner leaf panels, the composite rock wool is arranged between the outer leaf panels and the inner leaf panels, and the composite rock wool is fixed to the board surface of the outer leaf panels close to the inner leaf panels by anchor nails, the outer leaf panels are lifted on the outer leaf L-shaped brackets, and the outer leaf panels are fixed to the outer leaf angle steels by outer leaf hook bolts, and multiple outer leaf panels are lifted on the outer leaf L-shaped brackets at different positions from both sides of the window opening to the middle of the window opening, and fixed to the outer leaf angle steels at different positions, the inner leaf panels are lifted on the inner leaf L-shaped brackets, and the inner leaf panels are fixed to the inner leaf angle steels by inner leaf hook bolts, and multiple outer leaf panels are lifted on the inner leaf L-shaped brackets at different positions from both sides of the window opening to the middle of the window opening, and fixed to the outer leaf angle steels at different positions.

[0014] Furthermore, the top end of the full-height vertical keel is connected to the structural steel beam by carbon dioxide shielded welding, the bottom end of the full-height vertical keel is connected to the embedded plate of the floor decking by carbon dioxide shielded welding, the two ends of the upper horizontal keel are connected to the full-height vertical keels on both sides by carbon dioxide shielded welding, the two ends of the lower horizontal keel are connected to the full-height vertical keels on both sides by carbon dioxide shielded welding, the top end of the supporting vertical keel is connected to the lower horizontal keel by carbon dioxide shielded welding, the lower end of the supporting vertical keel is connected to the embedded plate of the supporting vertical keel by carbon dioxide shielded welding, the lower end of the tie-tie vertical keel is connected to the upper horizontal keel by carbon dioxide shielded welding, and the upper end of the tie-tie vertical keel is connected to the structural steel beam by carbon dioxide shielded welding, and the thermal insulation material is B1 grade polyurethane foam.

[0015] Further, the AAC exterior wall panels are arranged in sequence from both sides of the window opening to the middle of the window opening, the AAC exterior wall panels (3) include an outer leaf panel, a sandwich composite rock wool and an inner leaf panel, the composite rock wool is arranged between the outer leaf panel and the inner leaf panel, the composite rock wool is fixed to the board surface of the outer leaf panel close to the inner leaf panel by composite rock wool special anchors, the number of anchors used for fixing is 6 / m2, the outer leaf panel is lifted on the outer leaf L-shaped bracket, the outer leaf panel is fixed to the outer leaf angle steel by the outer leaf hook bolts, a plurality of outer leaf panels are placed on the outer leaf L-shaped brackets at different positions from both sides of the window opening to the middle of the window opening, and fixed to the outer leaf angle steels at different positions, the inner leaf panel is lifted on the inner leaf L-shaped bracket, the inner leaf panel is fixed to the inner leaf angle steel by the inner leaf hook bolts, a plurality of outer leaf panels are lifted on the inner leaf L-shaped brackets at different positions from both sides of the window opening to the middle of the window opening, and fixed to the outer leaf angle steels at different positions The beneficial effect of the present invention is that the present invention uses galvanized hollow square steel as the node between the AAC exterior wall panel and the window opening and the keel of the window opening, constructs a high-strength keel frame for supporting the window opening of the AAC exterior wall panel and the keel frame of the node between the AAC exterior wall panel and the window opening, and can solve the problem of opening an ultra-wide window opening on a double-layer AAC exterior wall panel. In addition, the galvanized hollow square steel is filled with thermal insulation material to prevent the occurrence of thermal bridge phenomenon at the node between the AAC exterior wall panel and the window opening. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a node elevation drawing of a double-layer AAC exterior wall panel window hole of a frame building of the present invention; Figure 2 The invention discloses a longitudinal cross-sectional view of a window hole node of a double-layer AAC exterior wall panel of a frame building.

[0017] Explanation of symbols in the accompanying drawings: 1. Tie-in vertical keel, 2. Support vertical keel, 3. AAC exterior wall panel, 31. Outer leaf plate, 33. Inner leaf plate, 4. Structural steel beam, 5. Full-height vertical keel, 6. Upper horizontal keel, 7. Lower horizontal keel, 8. Angle steel, 9. Outer leaf L-shaped bracket 10. Inner leaf L-shaped bracket, 11. Outer leaf hook bolt, 12. Support vertical keel embedded plate, 13. Floor decking, 14. Inner leaf hook bolt, 15. Insulation material. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0019] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0020] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0021] In the description of this patent, unless otherwise clearly specified and limited, if the term "connection" or the like appears to indicate the connection relationship between components, the term should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] A construction method for a double-layer AAC exterior wall window opening node of a frame building comprises the following steps: Step 1: Pre-embedded parts for structural construction: According to the AAC wall panel detailed drawing, determine the position of the full-height vertical keel at the exterior window opening, embed the full-height vertical keel embedded plate in the floor decking, determine the position of the supporting vertical keel, and embed the supporting vertical keel embedded plate in the floor decking; Furthermore, the embedded plates of the full-height vertical keels and the embedded plates of the supporting vertical keels are galvanized steel plates. In order to prevent corrosion of the embedded plates, galvanized steel plates are used as the embedded plates of the full-height vertical keels and the embedded plates of the supporting vertical keels.

[0023] Step 2: AAC exterior wall panel window opening node construction preparation: check the layout and check the position, elevation and quantity of the full-height vertical keel embedded plate and the supporting vertical keel embedded plate; Furthermore, the control lines and window opening position lines of the AAC exterior wall panels are checked and measured, and the control lines of the AAC exterior wall panels are measured and set according to the structural control axis.

[0024] Step 3, window opening keel welding: According to the AAC exterior wall panel deepening drawing, full-height vertical keels are set on both sides of the window opening, the lower end of the full-height vertical keel is welded and fixed to the full-height vertical keel embedded plate in the floor decking, and the upper end of the full-height vertical keel is welded and fixed to the structural steel beam. Upper horizontal keels and lower horizontal keels are set above and below the window opening, and the two ends of the upper horizontal keel are welded and fixed to the upper part of the full-height vertical keels on both sides, and the two ends of the lower horizontal keel are welded and fixed to the lower part of the full-height vertical keels on both sides; Step 4, window opening keel fixation: multiple tie vertical keels are arranged between the structural steel beam and the horizontal keel with a spacing of less than or equal to 1200mm, the upper end of the tie vertical keel is welded and fixed to the structural steel beam, and the lower end of the tie vertical keel is welded and fixed to the horizontal keel, multiple supporting vertical keels are arranged between the floor deck and the lower horizontal keel with a spacing of less than or equal to 1750mm, the upper end of the supporting vertical keel is welded and fixed to the lower horizontal keel, and the lower end of the supporting keel is welded and fixed to the embedded plate of the supporting vertical keel in the floor deck; Furthermore, in step 3 and step 4, in each floor of the building, the full-height vertical keel is set from the structural steel beam to the floor decking. After the lower end of the full-height vertical keel is welded and fixed to the full-height vertical keel embedded plate in the floor decking, the position is checked according to the indoor wall panel control line to ensure the room span size and the squareness of the room; at the same time, a through line is drawn from the first floor to the top floor outside this layer structure to ensure that the full-height vertical keel deviation of the upper and lower floors of the same facade is within the specification range. All welding and fixing between the lower end of the full-height vertical keel and the full-height vertical keel embedded plate in the floor decking, the upper end of the full-height vertical keel and the structural steel beam, the two ends of the horizontal keel and the full-height vertical keels on both sides, the two ends of the lower horizontal keel and the full-height vertical keels on both sides, the upper end of the tie-tie vertical keel and the structural steel beam, the lower end of the tie-tie keel and the horizontal keel, the upper end of the supporting vertical keel and the lower horizontal keel, and the lower end of the supporting keel and the embedded plate of the supporting vertical keel in the floor decking are all carbon dioxide shielded welding and fixing. The weld form and weld leg height meet the requirements of in-depth design. Step 5, fixation with L-shaped bracket, hook bolt and angle steel: L-shaped bracket is set in the middle position of each AAC exterior wall panel, and the L-shaped bracket is fixed on the upper horizontal keel at intervals of the width of the AAC exterior wall panel. The L-shaped bracket includes an outer leaf L-shaped bracket and an inner leaf L-shaped bracket. The outer leaf L-shaped bracket and the inner leaf L-shaped bracket are respectively welded and fixed on both sides of the upper horizontal keel. According to the AAC exterior wall panel deepening layout drawing, the angle steel is fixed on the upper horizontal keel at intervals of the AAC exterior wall panel width. The hook head of the hook head bolt is hooked on the angle steel, and the hook head bolt is fixed to the angle steel by welding. The angle steel includes an outer leaf angle steel and an inner leaf angle steel. The outer leaf angle steel and the inner leaf angle steel are respectively fixed to the upper horizontal keel according to the position of the hook head bolt. The hook head bolt includes an outer leaf hook head bolt and an inner leaf hook head bolt. The hook head of the outer leaf hook head bolt is welded and fixed to the outer leaf angle steel, and the hook head of the inner leaf hook head bolt is welded and fixed to the inner leaf angle steel. Furthermore, in step 5, the position of the L-shaped bracket is determined according to the AAC exterior wall panel detailed layout drawing. Specifically, relative to the AAC exterior wall panel, it is set in the middle position outside the AAC exterior wall panel on the window opening. After the L-shaped bracket is positioned and welded with the horizontal keel, the position of the L-shaped bracket and the elevation of the L-shaped bracket at the same height are checked to be consistent, and the horizontality of each L-shaped bracket is also consistent. After confirmation, the three sides of the L-shaped bracket are welded by carbon dioxide shielded welding. The outer leaf L-shaped bracket is an outer leaf L-shaped bracket of 40×100×8mm, and the inner leaf L-shaped bracket is an inner leaf L-shaped bracket of 40×70×5mm. The angle steel is an L63×6 angle steel, and the position of the fixed angle steel is determined according to the detailed layout drawing.

[0025] Step 6. Fill the AAC exterior wall panel window opening node keels with insulation materials: the full-height vertical keels, upper horizontal keels, lower horizontal keels, multiple tie-joint vertical keels and multiple supporting vertical keels on both sides are hollow galvanized square steels. Fill the hollow interiors of the full-height vertical keels, upper horizontal keels, lower horizontal keels, multiple tie-joint vertical keels and multiple supporting vertical keels on both sides of the hollow galvanized square steels with insulation materials; Further, in step 6, two 6mm circular holes are opened on the full-height vertical keels on both sides, the upper horizontal keel, the lower horizontal keel, the multiple tie vertical keels and the multiple supporting vertical keels at a distance of less than or equal to 1.2 meters, and the hollow interiors of the full-height vertical keels, the upper horizontal keel, the lower horizontal keel, the multiple tie vertical keels and the multiple supporting vertical keels made of galvanized hollow square steel are filled with insulation material through the circular holes, and the insulation material is B1 grade polyurethane foam.

[0026] Step 7, AAC exterior wall panel installation: AAC exterior wall panels are installed from both sides of the window opening to the middle of the window opening. AAC exterior wall panels include outer leaf panels, sandwich composite rock wool and inner leaf panels. The outer leaf panels are installed first. The outer leaf panels are lifted on the outer leaf L-shaped brackets and fixed to the outer leaf angle steels through outer leaf hook bolts. Multiple outer leaf panels are lifted on outer leaf L-shaped brackets at different positions from both sides of the window opening to the middle of the window opening and fixed to outer leaf angle steels at different positions. Composite rock wool is fixed to the surface of the outer leaf panels close to the outer leaf panels close to the inner leaf panels through anchor nails. Finally, the inner leaf panels are installed. The inner leaf panels are lifted on the inner leaf L-shaped brackets and fixed to the inner leaf angle steels through inner leaf hook bolts. Multiple outer leaf panels are lifted on inner leaf L-shaped brackets at different positions from both sides of the window opening to the middle of the window opening and fixed to outer leaf angle steels at different positions.

[0027] Further, in step 7, a through hole is opened in the AAC outer wall panel according to the position of the hook bolt, a groove is opened on the outer side of the AAC outer wall, and a metal gasket and nut are used to fix the outer side of the hook bolt, and the distance between the hook bolt and the board end is ≥100mm. ㎡.

[0028] During the construction of this embodiment, the maximum width of the window opening in the double-layer AAC exterior wall panel installed according to the atlas design is 2.4 meters, while in this project, it is necessary to open an extra-large window with a width of 5-6 meters on the AAC exterior wall panel. In order to solve the problems encountered in actual projects, the technical solution of the present invention is proposed. The present invention uses galvanized hollow square steel as the node between the AAC exterior wall panel and the window opening and the keel of the window opening to construct a high-strength keel frame for supporting the window opening of the AAC exterior wall panel and the keel frame for the node between the AAC exterior wall panel and the window opening, which can solve the problem of opening an extra-wide window opening on the double-layer AAC exterior wall panel of the frame building. In addition, the galvanized hollow square steel is filled with insulation material to block the occurrence of thermal bridge phenomenon at the node between the AAC exterior wall panel and the window opening. It reduces wet work at the construction site, improves construction efficiency, and saves project costs.

[0029] The present invention also discloses a double-layer AAC exterior wall panel window opening node structure for a frame building, such as Figure 1 to Figure 2As shown, it includes a window opening keel, a tie vertical keel 1, a supporting vertical keel 2, an AAC exterior wall panel 3 on the window opening, a structural steel beam 4, a floor decking slab 13 and a floor decking slab embedded plate, wherein the floor decking slab embedded plate is embedded in the floor decking slab 13 during structural construction, and the floor decking slab embedded plate includes a vertical keel embedded plate and a supporting vertical keel embedded plate 12, and the window opening keel includes full-height vertical keels 5 on both sides, an upper horizontal keel 6 and a lower horizontal keel 7, the top end of the full-height vertical keel 5 is fixedly connected to the structural steel beam 4, the bottom end of the full-height vertical keel 5 is fixedly connected to the vertical keel embedded plate, the two ends of the upper horizontal keel 6 are welded to the full-height vertical keels 5 on both sides, and the two ends of the lower horizontal keel 7 are welded to the full-height vertical keels 5 on both sides, and a plurality of tie vertical keels 1 are arranged on the structural steel beam with a spacing of less than or equal to 1200mm. Between the beam 4 and the upper horizontal keel 6, the top of the tie vertical keel 1 is fixedly connected to the structural steel beam 4, the lower end of the tie vertical keel 1 is fixedly connected to the upper horizontal keel 6, and multiple supporting vertical keels 2 are arranged between the floor decking and the lower horizontal keel 7 with a spacing of less than or equal to 1750mm. The upper end of the supporting vertical keel 2 is fixedly connected to the lower horizontal keel 7, and the lower end of the supporting vertical keel 2 is fixedly connected to the supporting vertical keel embedded plate 12. The bottom end of the AAC exterior wall panel 3 is fixedly connected to the upper horizontal keel 6 through a hook bolt 11, and the top of the AAC exterior wall panel 3 is fixedly connected to the structural steel beam 4 through a hook bolt 11. The full-height vertical keels 5, the upper horizontal keel 6, the lower horizontal keel 7, the multiple tie vertical keels 1 and the multiple supporting vertical keels 2 on both sides are hollow galvanized square steels, and the hollow galvanized square steels are filled with insulation material 15.

[0030] Further, if Figure 1 to Figure 2 As shown, it also includes angle steel 8 and L-shaped brackets. The L-shaped brackets are arranged in the middle of each AAC outer wall panel 3. The L-shaped brackets are fixed on the upper horizontal keel 6 at intervals of the width of the AAC outer wall panel 3. The L-shaped brackets include outer leaf L-shaped brackets 9 and inner leaf L-shaped brackets 10. The outer leaf L-shaped brackets 9 and the inner leaf L-shaped brackets 10 are respectively welded and fixed on both sides of the upper horizontal keel 6. The angle steels 8 are fixed on the upper horizontal keel at intervals of the width of the AAC outer wall panel. The hook head of the hook head bolt is hooked on the angle steel, and the hook head of the hook head bolt 11 is fixed to the angle steel by welding. The angle steel 8 includes an outer leaf angle steel and an inner leaf angle steel. The outer leaf angle steel and the inner leaf angle steel are respectively fixed to the upper horizontal keel 6 according to the position of the hook head bolt. The hook head bolt includes an outer leaf hook head bolt 11 and an inner leaf hook head bolt 14. The hook head of the outer leaf hook head bolt 11 is welded and fixed to the outer leaf angle steel, and the hook head of the inner leaf hook head bolt 14 is welded and fixed to the inner leaf angle steel.

[0031] Further, if Figure 1 to Figure 2As shown, the AAC outer wall panels 3 are arranged in sequence from both sides of the window opening to the middle of the window opening. The AAC outer wall panels 3 include outer leaf panels 31, sandwich composite rock wool and inner leaf panels 33. The composite rock wool is arranged between the outer leaf panels 31 and the inner leaf panels 33. The composite rock wool is fixed to the plate surface of the outer leaf panels 31 close to the inner leaf panels 33 by anchor nails. The outer leaf panels 31 are lifted on the outer leaf L-shaped bracket 9 and fixed to the outer leaf angle steel by the outer leaf hook bolts 11. The blades 31 are lifted on the outer leaf L-shaped brackets 9 at different positions from both sides of the window opening to the middle position of the window opening in sequence, and fixed on the outer leaf angle steels at different positions. The inner blades 33 are lifted on the inner leaf L-shaped brackets 10, and the inner blades 33 are fixed to the inner leaf angle steels by the inner leaf hook bolts 14. Multiple outer blades 33 are lifted on the inner leaf L-shaped brackets 10 at different positions from both sides of the window opening to the middle position of the window opening in sequence, and fixed on the outer leaf angle steels at different positions.

[0032] Further, if Figure 1 to Figure 2 As shown, the top of the full-height vertical keel 5 is connected to the structural steel beam 4 by carbon dioxide shielded welding, the bottom end of the full-height vertical keel 5 is connected to the vertical keel embedded plate by carbon dioxide shielded welding, the two ends of the upper horizontal keel 6 are connected to the full-height vertical keels 5 on both sides by carbon dioxide shielded welding, the two ends of the lower horizontal keel 7 are connected to the lower part of the full-height vertical keels 5 on both sides by carbon dioxide shielded welding, the top of the supporting vertical keel 2 is connected to the lower horizontal keel 7 by carbon dioxide shielded welding, the lower end of the supporting vertical keel 2 is connected to the supporting vertical keel embedded plate 12 by carbon dioxide shielded welding, the lower end of the tie vertical keel 1 is connected to the upper horizontal keel 6 by carbon dioxide shielded welding, and the upper end of the tie vertical keel 1 is connected to the structural steel beam 4 by carbon dioxide shielded welding, and the thermal insulation material 15 is B1 grade polyurethane foam.

[0033] It should be noted that the above specific implementations are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art should understand that various modifications, equivalent substitutions, changes, etc. can be made to the present invention. However, as long as these changes do not deviate from the spirit of the present invention, they should be within the scope of protection of the present invention. In addition, some terms used in the specification and claims of this application are not restrictive, but are only for the convenience of description.

Claims

1. A construction method for a double-layer AAC exterior wall window opening node of a frame building, characterized in that: The following steps are involved: Step 1: Pre-embedded parts for structural construction: According to the AAC wall panel detailed drawing, determine the position of the full-height vertical keel at the exterior window opening, embed the full-height vertical keel embedded plate in the floor decking, determine the position of the supporting vertical keel, and embed the supporting vertical keel embedded plate in the floor decking; Step 2: AAC exterior wall panel window opening node construction preparation: measurement and layout, check the position, elevation and quantity of the full-height vertical keel embedded plate and the supporting vertical keel embedded plate; Step 3, window opening keel welding: According to the AAC exterior wall panel deepening drawing, full-height vertical keels are set on both sides of the window opening. The lower end of the full-height vertical keel is welded and fixed to the full-height vertical keel embedded plate in the floor decking, and the upper end of the full-height vertical keel is welded and fixed to the structural steel beam. Upper horizontal keels and lower horizontal keels are set above and below the window opening. The two ends of the upper horizontal keel are welded and fixed to the full-height vertical keels on both sides. The bottom elevation of the upper horizontal keel is the same as the top elevation of the window opening. The two ends of the lower horizontal keel are welded and fixed to the lower part of the full-height vertical keels on both sides. The top elevation of the lower horizontal keel is the same as the bottom elevation of the window opening. Step 4, window opening keel installation: multiple tie vertical keels are arranged between the structural steel beam and the horizontal keel with a spacing of less than or equal to 1200mm, the upper end of the tie vertical keel is welded and fixed to the structural steel beam, and the lower end of the tie vertical keel is welded and fixed to the horizontal keel. Multiple supporting vertical keels are arranged between the floor deck and the lower horizontal keel with a spacing of less than or equal to 1750mm, the upper end of the supporting vertical keel is welded and fixed to the lower horizontal keel, and the lower end of the supporting keel is welded and fixed to the embedded plate of the supporting vertical keel in the floor deck; Step 5, installation of L-shaped brackets, hook bolts and angle steels: L-shaped brackets are set in the middle of each AAC exterior wall panel. The L-shaped brackets are fixed on the upper horizontal keel at intervals of the width of the AAC exterior wall panel. The L-shaped brackets include outer leaf L-shaped brackets and inner leaf L-shaped brackets. The outer leaf L-shaped brackets and the inner leaf L-shaped brackets are respectively welded and fixed on both sides of the upper horizontal keel. According to the AAC exterior wall panel deepening layout drawing, the angle steels are fixed on the upper horizontal keel at intervals of the width of the AAC exterior wall panel. The hook heads of the hook bolts are hooked on the angle steels. The hook bolts are fixed to the angle steels by welding. The angle steels include outer leaf angle steels and inner leaf angle steels. The outer leaf angle steels and the inner leaf angle steels are respectively fixed to the upper horizontal keel according to the positions of the hook bolts. The hook bolts include outer leaf hook bolts and inner leaf hook bolts. The hook heads of the outer leaf hook bolts are welded and fixed to the outer leaf angle steels, and the hook heads of the inner leaf hook bolts are welded and fixed to the inner leaf angle steels. Step 6. Fill the AAC exterior wall panel window opening node keels with insulation materials: the full-height vertical keels, upper horizontal keels, lower horizontal keels, multiple tie-joint vertical keels and multiple supporting vertical keels on both sides are hollow galvanized square steels. Fill the hollow interiors of the full-height vertical keels, upper horizontal keels, lower horizontal keels, multiple tie-joint vertical keels and multiple supporting vertical keels with insulation materials; Step 7, AAC exterior wall panel installation: AAC exterior wall panels are installed from both sides of the window opening to the middle of the window opening. AAC exterior wall panels include outer leaf panels, sandwich composite rock wool and inner leaf panels. The outer leaf panels are installed first. The outer leaf panels are lifted on the outer leaf L-shaped brackets and tied to the upper horizontal keel through the outer leaf hook bolts and the outer leaf angle steel. Multiple outer leaf panels are placed on the outer leaf L-shaped brackets at different positions from both sides of the window opening to the middle of the window opening and fixed on the outer leaf angle steels at different positions. The composite rock wool is fixed to the outer leaf panels near the inner side of the outer leaf panels by anchor nails. Finally, the inner leaf panels are installed. The inner leaf panels are lifted on the inner leaf L-shaped brackets and tied to the upper horizontal keel through the inner leaf hook bolts and the inner leaf angle steel. Multiple outer leaf panels are lifted on the inner leaf L-shaped brackets at different positions from both sides of the window opening to the middle of the window opening and fixed on the outer leaf angle steels at different positions.

2. The method for constructing the AAC exterior wall window opening nodes of a frame building according to claim 1 is characterized in that: In step 1, the embedded plates of the full-height vertical purlins and the embedded plates of the supporting vertical purlins are galvanized steel plates.

3. The method for constructing the AAC exterior wall window opening nodes of a frame building according to claim 1 is characterized in that: In step 2, the control lines and window opening position lines of the AAC exterior wall panels are measured and the control lines of the AAC exterior wall panels are measured and set according to the structural control axis.

4. The method for constructing the AAC exterior wall window opening nodes of a frame building according to claim 1 is characterized in that: In step 3 and step 4, all welding fixation is carbon dioxide shielded welding fixation.

5. The method for constructing the AAC exterior wall window opening nodes of a frame building according to claim 1 is characterized in that: In step 6, a through hole is opened in the AAC exterior wall panel according to the position of the hook bolt, a groove is opened on the outer side of the AAC exterior wall panel, and a metal gasket and a nut are used to fix the outer side of the hook bolt.

6. The method for constructing the AAC exterior wall window opening nodes of a frame building according to claim 1 is characterized in that: In step 7, two 6mm circular holes are opened at a distance of less than or equal to 1.2 meters on the full-height vertical keels on both sides, the upper horizontal keel, the lower horizontal keel, the multiple tie vertical keels and the multiple supporting vertical keels, and the hollow interior of the full-height vertical keel, the upper horizontal keel, the lower horizontal keel, the multiple tie vertical keels and the multiple supporting vertical keels made of galvanized hollow square steel is filled with insulation material through the circular holes. The insulation material is B1 grade polyurethane foam.

7. The double-layer AAC exterior wall panel window opening node reinforcement structure of a frame building according to claim 1 is characterized in that: The invention comprises a window opening keel, a tie-in vertical keel (1), a supporting vertical keel (2), an AAC exterior wall panel (3) on the window opening, a structural steel beam (4), a floor decking plate (13) and a floor decking plate embedded plate, wherein the floor decking plate embedded plate is embedded in the floor decking plate (13) during structural construction, the floor decking plate embedded plate comprises a vertical keel embedded plate and a supporting vertical keel embedded plate (12), and the window opening keel comprises vertical keels (5) on both sides, an upper horizontal keel (6) and a lower horizontal keel (7). The top end of the full-height vertical keel (5) is fixedly connected to the structural steel beam (4), the bottom end of the full-height vertical keel (5) is fixedly connected to the vertical keel embedded plate, the two ends of the upper horizontal keel (6) are welded and fixedly connected to the full-height vertical keels (5) on both sides, the two ends of the lower horizontal keel (7) are welded and fixedly connected to the full-height vertical keels (5) on both sides, and a plurality of the tie-in vertical keels (1) are arranged between the structural steel beam (4) and the vertical keel with a spacing of less than or equal to 1200 mm. The top of the tie-type vertical keel (1) is fixedly connected to the structural steel beam (4), the lower end of the tie-type vertical keel (1) is fixedly connected to the upper horizontal keel (6), and the plurality of supporting vertical keels (2) are arranged between the floor deck and the lower horizontal keel (7) at a spacing of less than or equal to 1750 mm, the upper end of the supporting vertical keel (2) is fixedly connected to the lower horizontal keel (7), and the lower end of the supporting vertical keel (2) is fixedly connected to the supporting vertical keel embedded plate (12). The bottom end of the AAC exterior wall panel (3) is fixedly connected to the upper horizontal keel (6) by means of a hook bolt (11), and the top end of the AAC exterior wall panel (3) is fixedly connected to the structural steel beam (4) by means of a hook bolt (11). The full-height vertical keels (5), the upper horizontal keel (6), the lower horizontal keel (7), the plurality of tie-in vertical keels (1) and the plurality of supporting vertical keels (2) on both sides are all hollow galvanized square steels, and the hollow galvanized square steels are filled with a thermal insulation material (15).

8. The frame building AAC exterior wall panel window opening node reinforcement structure according to claim 7 is characterized in that: The invention also comprises an angle steel (8) and an L-shaped bracket. The L-shaped bracket is arranged in the middle of each AAC outer wall panel (3). The L-shaped bracket is fixed on the upper horizontal keel (6) at intervals of the width of the AAC outer wall panel (3). The L-shaped bracket comprises an outer leaf L-shaped bracket (9) and an inner leaf L-shaped bracket (10). The outer leaf L-shaped bracket (9) and the inner leaf L-shaped bracket (10) are respectively welded and fixed on both sides of the upper horizontal keel (6). The angle steel (8) is fixed on the upper horizontal keel (6) at intervals of the width of the AAC outer wall panel. On the horizontal keel, the hook head of the hook head bolt is hooked on the angle steel, and the hook head of the hook head bolt (11) is fixed to the angle steel by welding. The angle steel (8) includes an outer leaf angle steel and an inner leaf angle steel. The outer leaf angle steel and the inner leaf angle steel are respectively fixed to the upper horizontal keel (6). The hook head bolt includes an outer leaf hook head bolt (11) and an inner leaf hook head bolt (14). The hook head of the outer leaf hook head bolt (11) is welded and fixed to the outer leaf angle steel, and the hook head of the inner leaf hook head bolt (14) is welded and fixed to the inner leaf angle steel.

9. The AAC exterior wall panel window opening node reinforcement structure of a frame building according to claim 7 is characterized in that: The top end of the full-height vertical keel (5) is connected to the structural steel beam (4) by carbon dioxide shielded welding, the bottom end of the full-height vertical keel (5) is connected to the vertical keel embedded plate by carbon dioxide shielded welding, the two ends of the upper horizontal keel (6) are connected to the full-height vertical keels (5) on both sides by carbon dioxide shielded welding, the two ends of the lower horizontal keel (7) are connected to the full-height vertical keels (5) on both sides by carbon dioxide shielded welding, the top end of the supporting vertical keel (2) is connected to the lower horizontal keel (7) by carbon dioxide shielded welding, the lower end of the supporting vertical keel (2) is connected to the supporting vertical keel embedded plate (12) by carbon dioxide shielded welding, the lower end of the tie vertical keel (1) is connected to the upper horizontal keel (6) by carbon dioxide shielded welding, and the upper end of the tie vertical keel (1) is connected to the structural steel beam (4) by carbon dioxide shielded welding, and the thermal insulation material (15) is B1 grade polyurethane foam.

10. The frame building AAC exterior wall panel window opening node reinforcement structure according to claim 8, characterized in that: The AAC exterior wall panels (3) are arranged in sequence from both sides of the window opening to the middle of the window opening. The AAC exterior wall panels (3) include an outer leaf panel (31), a sandwich composite rock wool, and an inner leaf panel (33). The composite rock wool is arranged between the outer leaf panel (31) and the inner leaf panel (33). The composite rock wool is fixed to the board surface of the outer leaf panel (31) close to the inner leaf panel (33) by composite rock wool special anchors. The number of anchors for fixing is 6 / m2. The outer leaf panel (31) is lifted on the outer leaf L-shaped bracket (9) and is fixed to the outer leaf by the outer leaf hook bolt (11). The blades are fixed on the outer blade angle steel, and a plurality of outer blades (31) are sequentially placed on outer blade L-shaped brackets (9) at different positions from both sides of the window opening to the middle position of the window opening, and fixed on outer blade angle steels at different positions. The inner blade (33) is lifted on the inner blade L-shaped bracket (10), and the inner blade (33) is fixed to the inner blade angle steel by inner blade hook bolts (14). A plurality of outer blades (33) are sequentially lifted on inner blade L-shaped brackets (10) at different positions from both sides of the window opening to the middle position of the window opening, and fixed on outer blade angle steels at different positions.

Images