Fabricated outer wall system and construction method

Abstract

The invention discloses a fabricated exterior wall system and a construction method, the fabricated exterior wall system comprises a steel beam, a steel column, a floor slab and a wall body, the steel beam and the floor slab are fixed on the steel column up and down, and the steel beam, the steel column and the floor slab form a cavity. A component is fixed to the steel beam, the first limiting piece is installed on the component, the second limiting piece is installed on the floor, the wall can horizontally move between the first limiting piece and the second limiting piece, and the outer side of the wall is limited on the first limiting piece and the second limiting piece. The first connecting piece is fixed to the component, the first connecting piece and the first limiting piece are fixed to the upper end of the wall, the second connecting piece is fixed to the floor, and the second connecting piece and the second limiting piece are fixed to the lower end of the wall, so that the wall is arranged in the cavity in the vertical state. A wallboard is installed on the inner side of the wall body, and a veneer is installed on the outer side of the wall body. The modular wall body machined in a factory can be stably and rapidly installed in the middle frame formed by the steel beams and the steel columns.

Description

Technical Field

[0001] The present invention belongs to the technical field of prefabricated buildings, and in particular relates to a prefabricated exterior wall system and a construction method. Background Art

[0002] Prefabricated buildings refer to buildings that transfer a large amount of on-site work in traditional construction methods to factories, where building components and accessories (such as floor slabs, wall panels, stairs, balconies, etc.) are processed and manufactured in the factory, transported to the construction site, and assembled and installed on site through reliable connection methods.

[0003] In the existing technology, considering that steel structures have the advantages of high material strength, good plasticity and toughness, recyclability, and green environmental protection, their application in building structures can reduce the deadweight of the structure, improve the seismic performance of the structure, and speed up the construction speed. Currently, they are being used more and more.

[0004] The existing technology is to use steel structure to form a combined frame:

[0005] The applicant disclosed a utility model patent named Four-corner connected corrugated steel plate shear wall (authorization announcement number: CN215054259U) on June 23, 2021, which forms a frame through frame columns and frame beams.

[0006] The applicant disclosed a utility model patent on December 8, 2022, entitled A combined frame with corrugated steel plates (authorization announcement number: CN218911737U), which forms a frame through steel beams and steel columns.

[0007] The applicant disclosed a utility model patent on April 26, 2023, named Support and Corrugated Steel Plate Wall Hybrid Frame (Authorization Announcement No.: CN220058440U), which forms a frame through frame beams and steel columns.

[0008] How to stably and quickly install the factory-processed modular walls in the frame formed by steel beams and steel columns is a technical problem that technicians in this field need to solve. Summary of the invention

[0009] The purpose of the present invention is to solve the above-mentioned technical problems existing in the prior art and to provide an assembled exterior wall system and a construction method, which can stably and quickly install the modular walls processed in the factory in the middle frame formed by steel beams and steel columns.

[0010] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0011] The assembled exterior wall system includes steel beams, steel columns, floor slabs and walls, wherein the steel beams and floor slabs are fixed on the steel columns up and down, and the steel beams, steel columns and floor slabs form a cavity. The system is characterized in that it also includes a first limiting member, a second limiting member, a first connecting member and a second connecting member.

[0012] The steel beam is fixed with a component, a limiter 1 is installed on the component, a limiter 2 is installed on the floor slab, the wall can move horizontally between the limiter 1 and the limiter 2, and the outer side of the wall is limited on the limiter 1 and the limiter 2.

[0013] Connector 1 is fixed on the component, connector 1 and limiter 1 fix the upper end of the wall, connector 2 is fixed on the floor, connector 2 and limiter 2 fix the lower end of the wall, so that the wall remains vertically arranged in the cavity.

[0014] The inner side of the wall is installed with a wall panel, and the outer side of the wall is installed with a decorative panel.

[0015] Furthermore, the limiting member 1 adopts a through-rod bolt, which includes a bolt part 1 and a bolt part 2 connected to each other, the bolt part 1 is limited on the component, and the upper end of the wall is limited on the bolt part 2. The through-rod bolt can limit the upper end of the wall, and it can withstand the force applied by the wall, so that the modular wall is set vertically; the through-rod bolt is cylindrical, and when it limits the wall, it is point and surface contact, and the through-rod bolt is less affected by the unevenness of the wall; moreover, the through-rod bolt has low cost, is easy to make, improves construction efficiency, and also saves construction costs.

[0016] Furthermore, the component is provided with a limiting hole, and the bolt part one passes through the limiting hole. The bolt part one is provided with a nut, and the component is limited between the two nuts of the bolt part one. The position of the through-rod bolt at the component can be adjusted. When the through-rod bolt limits the wall, the wall is set at the set position of the floor, thereby improving the integrity.

[0017] Furthermore, the limiting member 1 adopts a limiting plate, which includes a limiting part 1 and a limiting part 2 connected to each other, the limiting part 1 is limited on the component by welding, and the upper end of the wall is limited on the limiting part 2. The limiting plate can limit the upper end of the wall, and it can withstand the force applied by the wall, so that the modular wall is set vertically; the limiting plate is easy to process and has a fast installation speed, which improves the construction efficiency.

[0018] Furthermore, the component is provided with a through hole, the connecting piece is provided with a fixing bolt, the fixing bolt passes through the through hole, the fixing bolt moves in the through hole along the length direction of the steel beam, and the fixing bolt is provided with a nut.

[0019] The connecting piece 1 is provided with a through hole 2 and a through hole 3, and the fixing bolt 1 passes through the through hole 2, so that the connecting piece 1 moves on the fixing bolt 1 along the width direction of the steel beam.

[0020] The wall is provided with a fixing bolt 2, which passes through a through hole 3, so that the connecting piece 1 moves on the fixing bolt 2 along the height direction of the steel beam, and the fixing bolt 2 is provided with a nut 2.

[0021] Furthermore, the limiting component 2 includes a limiting portion 3 and a limiting portion 4 which are connected to each other. The limiting portion 3 is fixed to the floor slab by expansion bolts, and the wall is supported on the limiting portion 3 and limited on the limiting portion 4.

[0022] Furthermore, the first connector and the second connector are both L-shaped.

[0023] Furthermore, a dry hanging piece is provided on the outer side of the wall, a keel is installed on the dry hanging piece, and the decorative panel is fixed on the keel.

[0024] Furthermore, a steel structure is provided on the inner side of the wall, and the wall panels are fixed on the steel structure.

[0025] Furthermore, the limiting component 2 includes a limiting portion 3 and a limiting portion 4 which are connected to each other. The limiting portion 3 is fixed to the floor slab by expansion bolts, and the wall is supported on the limiting portion 3 and limited on the limiting portion 4.

[0026] The construction method of the assembled exterior wall system is characterized by comprising the following steps:

[0027] S1. Component positioning welding: measure and lay out the lines at the steel beam, determine the component installation position, and then weld the U-shaped component to the steel beam.

[0028] S2. Fixing of the second limiter: Measure and lay out the lines on the floor to determine the installation position of the second limiter, and then fix the second limiter to the floor with expansion bolts.

[0029] S3. Fixing with through-rod bolts: screw a nut into the bolt part 1 of the through-rod bolt, then pass the bolt part 1 through the limiting hole of the component, then screw another nut into the bolt part 1, adjust the positions of the two nuts on the bolt part 1, and lock the two nuts on the single through-rod bolt on the component so that the horizontal distance between the bolt part 2 and the component is the set distance.

[0030] S4. Wall installation:

[0031] (1) Push the wall horizontally between the first and second limit members, and limit the upper end of the wall on the second bolt portion, and limit the lower end of the wall on the second limit member.

[0032] (2) Fix the connecting member 1 on the component, and fix the connecting member 1 and the upper end of the wall so that the connecting member 1 and the limiting member 1 fix the upper end of the wall.

[0033] (3) Adjust the horizontal and vertical directions of the wall.

[0034] (4) Fix the second connecting member on the floor slab, and fix the second connecting member to the lower end of the wall, so that the second connecting member and the second limiting member fix the lower end of the wall;

[0035] S5. Install the wall panel on the inner side of the wall.

[0036] S6. Install the decorative panel on the outside of the wall.

[0037] The present invention has the following beneficial effects due to the adoption of the above technical solution:

[0038] (1) The steel beams, steel columns and floor slabs of the present invention form a cavity, and the wall is a modular wall processed in a factory. After the wall is processed, it is transported to the construction site. The wall of the present invention is made of light steel keels, which has the effect of energy saving and environmental protection.

[0039] In order to quickly and stably install the modular wall, a limiter 1 is installed at the component of the steel beam, and the present invention fixes a limiter 2 at the floor slab, and pushes the wall from the room to between the limiter 1 and the limiter 2. At this time, the wall remains in a vertical state and is not easy to fall over. Then, the upper end of the wall is fixed by connecting member 1 and the limiter 1, and the lower end of the wall is fixed by connecting member 2 and the limiter 2. The modular wall can be quickly and stably fixed in the frame of the steel structure. At this time, the wall is set vertically, which can improve the installation accuracy, shorten the construction period, reduce the on-site labor cost, improve the economy of the building, and avoid damage to the wall structure itself.

[0040] (2) The limiting member of the present invention uses two methods to limit the wall:

[0041] Method 1: The limiting member 1 adopts a through-rod bolt, which includes a bolt part 1 and a bolt part 2 connected to each other. The bolt part 1 is limited on the component, and the upper end of the wall is limited on the bolt part 2. The through-rod bolt can limit the upper end of the wall, and it can withstand the force applied by the wall, so that the modular wall is set vertically; the through-rod bolt is cylindrical, and when it limits the wall, it is a point and surface contact, and the through-rod bolt is less affected by the unevenness of the wall; moreover, the through-rod bolt has low cost, is easy to make, improves construction efficiency, and also saves construction costs.

[0042] The component of the present invention is provided with a limiting hole, a bolt portion passes through the limiting hole, a nut is provided on the bolt portion, and the component is limited between two nuts on the bolt portion, so that the position of the through-rod bolt at the component can be adjusted. When the through-rod bolt limits the wall, the wall is set at the set position of the floor slab, thereby improving the integrity.

[0043] Method 2: The first limiting member adopts a limiting plate, which includes a limiting part 1 and a limiting part 2 connected to each other. The limiting part 1 is limited on the component by welding, and the upper end of the wall is limited on the limiting part 2. The limiting plate can limit the upper end of the wall, and it can withstand the force applied by the wall, so that the modular wall is set vertically; the limiting plate is easy to process and has a fast installation speed, which improves the construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The present invention will be further described below in conjunction with the accompanying drawings:

[0045] Figure 1 It is a structural schematic diagram of the assembled exterior wall system in the present invention;

[0046] Figure 2 It is a structural schematic diagram of the connection between the steel beam, steel column and floor slab in the present invention;

[0047] Figure 3 It is a schematic diagram of the structure of the present invention when the component is in the positioning welding state;

[0048] Figure 4 for Figure 3 A schematic diagram of the structure enlargement at the center A;

[0049] Figure 5 It is a schematic diagram of the structure of the present invention when the through-rod bolt is fixed;

[0050] Figure 6 for Figure 5 A schematic diagram of the structure enlarged at B in the middle;

[0051] Figure 7 It is a schematic diagram of the structure of the present invention in which a wall is limited on the first limiting member and the second limiting member;

[0052] Figure 8 for Figure 7 A schematic diagram of the structure enlarged at C in the middle;

[0053] Fig. 9 It is a structural schematic diagram of the present invention when the connecting member 1 and the limiting member 1 are fixed to the upper end of the wall;

[0054] Fig.10 for Fig. 9 A schematic diagram of the structure at D in the middle is enlarged;

[0055] Fig.11 It is a structural schematic diagram of the present invention when the second connecting member and the second limiting member are at the lower end of the wall fixed;

[0056] Fig.12 for Fig.11 A schematic diagram of the structure enlarged at E in the middle;

[0057] Fig.13It is a schematic diagram of the structure of the present invention using a through-rod bolt installed on a component;

[0058] Fig.14 It is a structural schematic diagram of the components in the present invention;

[0059] Fig.15 It is a schematic diagram of the structure of the through-rod bolt in the present invention;

[0060] Fig.16 It is a structural schematic diagram of a connecting member 1 in the present invention;

[0061] Fig.17 It is a structural schematic diagram of the wall in the present invention;

[0062] Fig.18 It is a structural schematic diagram of the second limiting member in the present invention;

[0063] Fig.19 It is a structural schematic diagram of the second connecting member in the present invention;

[0064] Fig. 20 This is a schematic diagram of the structure in which the limiting plate is installed on a component in the present invention;

[0065] Fig.21 It is a structural schematic diagram of the limiting plate in the present invention;

[0066] Fig. 22 This is a schematic diagram of the structure of the first embodiment of the dry hanging component after installation in the present invention;

[0067] Fig.23 for Fig. 22 A schematic diagram of the structure enlarged at F in the middle;

[0068] Fig.24 It is a structural schematic diagram of a first embodiment of a dry hanging member in the present invention;

[0069] Fig.25 This is a schematic diagram of the structure of the second embodiment of the dry hanging component after installation in the present invention;

[0070] Fig.26 for Fig.25 A schematic diagram of the structure enlarged at G in the middle;

[0071] Fig. 27 It is a structural schematic diagram of the second embodiment of the dry hanging part in the present invention;

[0072] Fig.28 It is a structural schematic diagram of the assembly part three in the present invention;

[0073] Fig.29 This is a schematic diagram of the structure of the third embodiment of the dry hanging component after installation in the present invention;

[0074] Fig.30 for Fig.29A magnified schematic diagram of the structure at H in the middle;

[0075] Fig.31 This is a structural schematic diagram of a third embodiment of a dry hanging component in the present invention;

[0076] Fig.32 It is a structural schematic diagram of assembly part 5 in the present invention.

[0077] In the figure, 1-steel beam; 2-steel column; 3-floor; 4-cavity; 5-member; 6-through hole 1; 7-limiting hole; 8-through bolt; 81-bolt part 1; 82-bolt part 2; 9-nut; 10-connector 1; 11-through hole 2; 12-through hole 3; 13-fixing bolt 1; 14-nut 1; 15-fixing bolt 2; 16-nut 2; 17-limiting part 2; 171-limiting part 4; 172-limiting part 3; 18-expansion bolt; 19-connector 2; 20-wall; 201 -inside; 202-outside; 21-limiting plate; 211-limiting part 2; 212-limiting part 1; 22-decorative panel; 23-assembly part 1; 24-keel; 25-self-tapping screw; 26-assembly part 2; 27-assembly part 3; 28-adjusting bolt 1; 29-nut 3; 30-groove 1; 31-groove 2; 32-through hole 4; 33-assembly part 4; 34-through hole 5; 35-assembly part 5; 36-adjusting bolt 2; 37-nut 4; 38-square steel; 39-wall panel; 40-opening. DETAILED DESCRIPTION

[0078] like Figures 1 to 32 As shown in the figure, the assembled exterior wall system of the present invention comprises a steel beam 1, a steel column 2, a floor slab 3 and a wall 20. The wall of the present invention is made of a light steel keel, which is processed in a factory to obtain a modular wall, which can control the processing quality of the wall and shorten the on-site construction period. The steel beam 1 and the floor slab 3 are fixed on the steel column 2 up and down, and the steel beam 1, the steel column 2 and the floor slab 3 form a frame, which is provided with a cavity 4 (such as Figure 2 shown).

[0079] A U-shaped component 5 is fixed to the steel beam 1 , and a limiting member 1 is installed on the component 5 .

[0080] The limiting member of the present invention is designed in two embodiments:

[0081] 1) If Fig.13, is a first embodiment of a limiting member: the limiting member adopts a through-rod bolt 8, and the through-rod bolt 8 includes a bolt part 1 81 and a bolt part 2 82. The bolt part 1 81 and the bolt part 2 82 are formed by pressing and bending. The bolt part 1 81 is horizontally limited on the component 5, and the upper end of the wall 20 is limited on the vertical bolt part 2 82. The through-rod bolt 8 can limit the upper end of the wall 20, and it can withstand the force applied by the wall 20, so that the modular wall 20 is set vertically; the through-rod bolt 8 is cylindrical, and when it limits the wall 20, it is point and surface contact, and the through-rod bolt 8 is less affected by the unevenness of the wall 20; moreover, the through-rod bolt 8 has low cost, is easy to make, improves construction efficiency, and also saves construction costs.

[0082] The component 5 is provided with a limiting hole 7, and the bolt part 81 passes through the limiting hole 7. The bolt part 81 is provided with a nut 9. A single through-rod bolt 8 uses two nuts 9 to limit the component 5. By adjusting the position of the nut 9 on the bolt part 81, the position of the through-rod bolt 8 at the component 5 can be adjusted. When the through-rod bolt 8 limits the wall 20, the wall 20 is set at the set position of the floor 3, the integrity is improved, and the wall is kept in a vertical state.

[0083] 2) If Fig. 20 , is the second embodiment of the first limiting member: the first limiting member adopts a limiting plate 21, and the limiting plate 21 includes a limiting portion 1 212 and a limiting portion 211, and the limiting portion 1 212 and the limiting portion 211 are formed by pressing and bending. The limiting portion 1 212 is horizontally fixed to the component 5 by welding, and the upper end of the wall 20 is limited on the vertical limiting portion 211. The limiting plate 21 can limit the upper end of the wall 20, and it can withstand the force applied by the wall 20, so that the modular wall 20 is set vertically; the limiting plate 21 is easy to process and has a fast installation speed, which improves the construction efficiency.

[0084] During the specific construction of the present invention, the limiting member 1 adopts a through-rod bolt 8.

[0085] like Fig.18 , which is the specific structure of the limiting member 17 of the present invention: the limiting member 17 includes a limiting portion 172 and a limiting portion 171. The limiting portion 172 and the limiting portion 171 are formed by pressing and bending, so that the limiting member 17 is L-shaped. The horizontal limiting portion 172 is fixed to the floor 3 by the expansion bolt 18, and the wall 20 is supported on the limiting portion 172 and limited on the vertical limiting portion 171.

[0086] The present invention pushes the wall 20 out of the room, can move the wall 20 horizontally to the area between the limiter 1 and the limiter 2 17, and limit the outer side 202 of the wall 20 on the limiter 1 and the limiter 2 17. The limiter 1 and the limiter 2 17 exert force on the wall 20 to prevent the wall 20 from tipping over.

[0087] An L-shaped connector 10 is fixed on the component 5, and the connector 10 and the limiter 1 fix the upper end of the wall 20. The present invention requires adjustment of the connector 10 to ensure that the connector 10 is accurately positioned and firmly connected. Specifically: the component 5 is provided with a through hole 16, and the through hole 16 is an oblong hole. At the same time, in order to facilitate the installation of the fixing bolt 1 in the later stage, an expanded hole is set in the middle position of the through hole 16, and the cross-section of the expanded hole is larger than the end cross-section of the fixing bolt 1. The connector 10 is provided with a fixing bolt 13, and the fixing bolt 13 is set in the through hole 16 after the expansion hole. The fixing bolt 13 moves in the through hole 16 along the length direction of the steel beam 1, and moves the connector 10 left and right. The fixing bolt 13 is provided with a nut 14. The connector 10 is provided with a through hole 2 11 and a through hole 3, and the through hole 2 11 and the through hole 3 12 are both oblong holes. The fixing bolt 13 passes through the through hole 2 11, so that the connecting piece 10 moves along the width direction of the steel beam 1 on the fixing bolt 13, and the connecting piece 10 moves forward and backward. The wall 20 is provided with a fixing bolt 2 15, and the fixing bolt 2 15 passes through the through hole 3 12, so that the connecting piece 10 moves along the height direction of the steel beam 1 on the fixing bolt 2 15, and the connecting piece 10 moves up and down. The fixing bolt 2 15 is provided with a nut 2 16. After the adjustment of the connecting piece 10 is completed, tighten the nut 14 and the nut 2 16.

[0088] like Fig.19 As shown, the second connector 19 of the present invention has the same structure as the first connector 10. The second connector 19 is fixed to the floor 3 by expansion bolts. The second connector 19 and the second limiter 17 are fixed to the lower end of the wall 20 by using fixing bolts and nuts, so that the wall 20 remains vertically arranged in the cavity 4.

[0089] The outer side 202 of the wall 20 is provided with a dry hanging piece, and the dry hanging piece is installed with a keel 24, the keel 24 is in a "J" shape, and the decorative panel 22 is fixed on the keel 24. The present invention designs three embodiments of the dry hanging piece:

[0090] 1) If Figure 22 to Figure 24 , which is a dry hanging part embodiment 1: the dry hanging part adopts an assembly part 23, the assembly part 23 is formed with a groove 30, the keel 24 is embedded in the groove 30, and the keel 24 is accurately installed in the assembly part 23. The assembly part 23 is fixedly connected to the wall 20 by self-tapping screws 25, and the keel 24 is fixedly connected to the assembly part 23 by self-tapping screws 25, so that the keel 24 and the assembly part 23 are firmly connected.

[0091] 2) If Figure 25 to Figure 28, which is a dry hanging part embodiment 2: the dry hanging part adopts an assembly part 26 and an assembly part 3 27, the assembly part 26 is fixedly connected to the wall 20 by self-tapping screws 25, and the assembly part 3 27 is formed with a groove 2 31, and the assembly part 26 is embedded in the groove 2 31. The assembly part 26 is provided with a vertical adjustment bolt 1 28, and the adjustment bolt 1 28 is provided with a nut 3 29, and the assembly part 3 27 is provided with a through hole 4 32, and the through hole 4 32 is an oblong hole, and the adjustment bolt 1 28 passes through the through hole 4 32, so that the assembly part 3 27 moves along the width direction of the steel beam 1 on the adjustment bolt 1 28, and the assembly part 3 27 moves forward and backward, and the position of the assembly part 3 27 can be adjusted. The assembly part 26 and the assembly part 3 27 are fixedly connected by self-tapping screws 25, and the keel 24 is fixedly connected to the assembly part 3 27 by self-tapping screws 25, and the distance between the keel 24 and the wall 20 can be adjusted, and a fireproof material can be set between the keel 24 and the wall 20.

[0092] 3) If Figure 29 to Figure 32 , which is the third embodiment of the dry hanging part: the dry hanging part adopts the assembly part 4 33 and the assembly part 5 35, the assembly part 4 33 is fixedly connected to the wall 20 by the self-tapping screw 25, the assembly part 4 33 is provided with a horizontal adjustment bolt 2 36, the adjustment bolt 2 36 is provided with a nut 4 37, the assembly part 5 35 is provided with a through hole 5 34, the through hole 5 34 is an oblong hole, the adjustment bolt 2 36 passes through the through hole 5 34, so that the assembly part 5 35 moves along the width direction of the steel beam 1 on the adjustment bolt 2 36, and the assembly part 3 27 moves forward and backward, and the position of the assembly part 3 27 can be adjusted. The assembly part 4 33 and the assembly part 5 35 are fixedly connected by the self-tapping screw 25, and the keel 24 is fixedly connected to the assembly part 5 35 by the self-tapping screw 25, and the distance between the keel 24 and the wall 20 can be adjusted, and a fireproof material can be set between the keel 24 and the wall 20.

[0093] The inner side 201 of the wall 20 is provided with a steel structure, which is a square steel 38 . The wall panel 39 is provided with a wash hole, and a self-tapping screw 25 is provided between the wash hole and the square steel 38 .

[0094] The construction method of the assembled exterior wall system comprises the following steps:

[0095] S1. Positioning welding of component 5: According to the design drawings, use laser line projector, ruler and other measuring tools to measure and lay out at the steel beam 1 to determine the installation position of component 5. Then weld the U-shaped component 5 to the steel beam 1. If large-scale production is required later, the structure will be directly welded to the bottom of the steel beam 1 in the factory.

[0096] The force of the component 5 of the present invention directly affects the quality of the later installation of the wall 20. Therefore, it is necessary to calculate the force of the component 5 according to the wind load size (F), material strength (f) and the size of the component 5. The component 5 is U-shaped with folded edges on both sides:

[0097] W=bt2 / 6; M = F * L;

[0098] Bending moment verification of component 5: M / W≤f; (steel strength);

[0099] Weld strength verification: (Weld strength);

[0100] The extrusion force between the fixing bolt 13 and the wall of the component 5:

[0101] b – width of the component;

[0102] t——thickness of the component;

[0103] L is the maximum distance from the through hole of the component to the folded edge of the component;

[0104] d——diameter of fixing bolt;

[0105] F——total wind load;

[0106] F'——the wind load on a single fixing bolt;

[0107] h e ——Calculated thickness of fillet weld, right angle fillet weld is equal to 0.7h f ,h f is the weld leg size;

[0108] l w ——Calculated length of fillet weld: for each weld, take the actual length minus 2h f ;

[0109] ——design value of fillet weld strength;

[0110] ——Design value of compressive strength.

[0111] S2, fix the second limiter 17: according to the design drawings, use laser projection instrument, ruler and other measuring tools to measure and lay out the lines at the floor 3 to determine the installation position of the second limiter 17. The second limiter 17 of the present invention includes a third limiter 172 and a fourth limiter 171 connected to each other, and the third limiter 172 and the fourth limiter 171 are L-shaped. The third limiter 172 is fixed to the floor 3 by an expansion bolt 18 to ensure that the limiter is firmly installed and accurately positioned to prevent displacement during subsequent installation.

[0112] S3. Fix the through-rod bolt 8: screw a nut 9 into the bolt portion 81 of the through-rod bolt 8, then pass the bolt portion 81 through the limiting hole 7 of the component 5, then screw another nut 9 into the bolt portion 81, adjust the positions of the two nuts 9 on the bolt portion 81, and lock the two nuts 9 on the single through-rod bolt 8 on the component 5, so that the horizontal distance between the bolt portion 82 and the component 5 is the set distance.

[0113] S4, wall 20 installation:

[0114] (1) Push the wall 20 horizontally between the first and second limiting members 17 , and limit the upper end of the wall 20 on the second bolt portion 82 , and limit the lower end of the wall 20 on the second limiting member 17 .

[0115] (2) Fix the connecting member 10 on the component 5, and fix the connecting member 10 and the upper end of the wall 20 so that the connecting member 10 and the limiting member 1 fix the upper end of the wall 20.

[0116] (3) According to the design requirements and the actual situation on site, use a crowbar and a wooden hook to adjust the horizontal and vertical directions of the wall 20. During the adjustment process, pay attention to protecting the surface of the wall 20 to avoid scratches. Multiple people can cooperate to make the adjustment.

[0117] (4) The second connecting member 19 is fixed on the floor 3 , and the second connecting member 19 and the lower end of the wall 20 are fixedly connected, so that the second connecting member 19 and the second limiting member 17 fix the lower end of the wall 20 .

[0118] According to actual needs, when the wall 20 is installed, a sill wall can be installed between two adjacent walls 20 through fixings, and an opening 40 is formed between the sill wall and the wall 20 for installing a window.

[0119] After the installation is completed, the gaps between the wall 20 and the steel beam 1, and between the wall 20 and the steel column 2 are filled with lightweight materials such as foaming agent.

[0120] S5. The wall panel 39 of the present invention adopts an ALC wall panel, which is installed on the square steel 38 on the inner side 201 of the wall body 20 by self-tapping screws. Then, a foaming agent is used to close the edge between the top of the ALC wall panel and the steel beam 1, and fine stone concrete is used to close the edge between the bottom of the ALC wall panel and the steel beam 1.

[0121] S6. Install the dry hanging parts on the outer side 202 of the wall 20 , and then install the keel 24 on the dry hanging parts. The keel 24 is in a "J" shape, and then fix the decorative panel 22 on the keel 24 .

[0122] Based on the above-mentioned embodiment, the present invention designs another embodiment, which adopts intelligent construction technology to further reduce labor costs and improve construction accuracy during on-site installation.

[0123] 1. Summary of commonly used intelligent construction technologies for prefabricated buildings

[0124] 1.1 Ultra-precise robotic arm technology

[0125] Ultra-precise robotic arm technology has been introduced into the field of prefabricated buildings to meet the high-precision requirements of prefabricated components. Traditional wall construction relies on manual measurement and is easily affected by human factors, resulting in installation deviations and quality problems. The mechanical hydraulic rod developed by the adaptive diagonal bracing system uses laser measurement function to analyze wall data in real time, realize intelligent control and automatic adjustment, and ensure construction specifications and quality. This technology not only improves construction efficiency and quality, but also provides more possibilities for the development of prefabricated buildings, promoting the dual improvement of work efficiency and quality.

[0126] 1.2 Precision alignment technology

[0127] In prefabricated buildings, precise positioning technology is crucial. The application of intelligent positioning modules improves the accuracy of prefabricated modules in the assembly process by adjusting the position of components through the system's intelligent adjustment. The system is low in complexity and easy to control. It adjusts the electromagnetic attraction through electric current to achieve independent operation of the adjustable push plate to ensure the precise positioning of prefabricated components. The construction site needs to clean the work surface, test the power system, adjust the equipment operating parameters, and achieve lateral positioning of prefabricated components through current loading and push plate thrust. Finally, observe the position of the reserved holes to ensure alignment up and down to complete the component installation.

[0128] 1.3 Intelligent lofting technology plays an important role in prefabricated building projects. Create structural models through design drawings, perform collision detection, and avoid construction conflicts. The intelligent lofting device inputs model information, automatically lofts and measures, and combines 3D laser scanning technology to improve data acquisition and utilization efficiency. All component construction and management can be modeled, and each discipline is optimized based on the original design to achieve collaborative construction. Intelligent lofting technology integrates multiple disciplines into model construction, realizes information sharing, promotes comparison and optimization of construction plans, and improves management effectiveness.

[0129] 2. Analysis of commonly used intelligent construction technologies for prefabricated buildings

[0130] 2.1 Ultra-precise robotic arm technology

[0131] Precise robotic arms are the foundation of intelligent construction, and the movement error of the robotic arms must be controlled within a very small range. To ensure that the movement distance of the robotic arms can be accurately controlled by algorithms.

[0132] 2.2 Precision alignment technology

[0133] Alignment technology is a supplement to the accuracy of the robot arm, and it can examine various alignment calculations such as laser ranging, sensor alignment, and visual alignment. The purpose is to enhance the robot arm's own adaptive recognition ability of the target during operation. For example: for wall panels in different parts, their sizes are different, and the relative positions of the connectors are also different. If programming is used to control the position of the wall panels, the workload will be relatively large. The supplementary alignment technology can facilitate the machine to adjust at any time during operation. Therefore, the applicant hereby gives the following preliminary ideas:

[0134] 1) Laser ranging

[0135] Using the principle of laser ranging, a small laser device is installed on a robotic arm. By measuring the distance between certain points on the wall panel and the steel beam, the size of the wall panel is calculated and the relative position of the wall panel and the steel beam is controlled.

[0136] 2) Sensor alignment

[0137] A sensor is placed on the lower side of the steel beam at a fixed distance from the flange. A sensor is also installed at the corresponding position of the wall panel. When the two are in contact, the sensor can send a signal, indicating that the robot arm has placed the wall panel in the correct position, which can guide the robot arm's next work.

[0138] 3) Visual counterpoint

[0139] A high-precision camera is installed on the robotic arm, and the principles of computer vision and neural network are used to identify the connecting parts, calculate the relative position between the two, and plan the movement path of the robotic arm.

[0140] 3. Intelligent lofting technology

[0141] During the application process, after the prefabricated components are installed on site, the total station equipment can scan and detect the coordinates of each element, and convert them into high-precision information data and input them into the model. After that, intelligent dynamic adjustments can be made to meet the subsequent intelligent layout needs.

[0142] Of course, in addition to the total station, you can also use lidar, ultrasonic scanning and other equipment to conduct on-site scanning and detection, and convert it into a digital model to facilitate subsequent intelligent dynamic adjustment and layout.

[0143] 4. The present invention adopts intelligent construction technology and applies it to the assembled exterior wall system. The construction steps are as follows:

[0144] 1) Perform environmental scanning of the entire floor (using total station, laser radar, ultrasound, etc.) and perform digital modeling in relevant BIM software.

[0145] 2) Through intelligent layout technology, the walls of the entire floor are laid out to obtain the corresponding installation position of each wall.

[0146] 3) The transport vehicle transports the wall to the corresponding location.

[0147] 4) Use the camera or laser sensor on the robotic arm to scan the wall to determine the size and position match.

[0148] 5) Use the robot arm to grab the wall, and use the camera or laser sensor to detect the relative position between the wall and the steel beam (including vertical, front and back, horizontal, and rotation), and then adjust it to make it vertical. (If the sensor solution is used, the module needs to be adjusted during placement to avoid the situation where the robot arm cannot accurately grasp the wall).

[0149] 6) Use the robotic arm to move the wall to the designated position.

[0150] In this process, if a laser solution is used, the relative position between the wall and the steel beam can be calculated by calculating the relative distance between certain points on the wall and the steel beam and the laser sensor, and then adjusted by the robot.

[0151] If the sensor solution is adopted, the robotic arm needs to move the wall horizontally until the wall contacts the sensor on the steel beam and sends a signal to determine the exact position of the wall.

[0152] If a computer vision solution is used, the adjustment of the robot is guided by calculating the relative position between the wall and the connecting parts.

[0153] 7) Alignment is completed.

[0154] 8) Use a screw locking robot to complete the insertion and tightening of the bolts.

[0155] 9) After completing the installation of a wall, the intelligent lofting technology is used again to update the changes in the scene.

[0156] 10) Repeat steps 5) to 9) to complete the installation of all walls.

[0157] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present invention to solve basically the same technical problems and achieve basically the same technical effects are all included in the protection scope of the present invention.

Claims

1. An assembled exterior wall system, comprising a steel beam, a steel column, a floor slab and a wall, wherein the steel beam and the floor slab are fixed on the steel column from top to bottom, and the steel beam, the steel column and the floor slab form a cavity; It is characterized in that It also includes a limiting member 1, a limiting member 2, a connecting member 1 and a connecting member 2; The steel beam is fixed with a component, the first limiter is installed on the component, the second limiter is installed on the floor slab, the wall can move horizontally between the first limiter and the second limiter, and the outer side of the wall is limited on the first limiter and the second limiter; The first connecting member is fixed on the component, the first connecting member and the first limiting member fix the upper end of the wall, the second connecting member is fixed on the floor, and the second connecting member and the second limiting member fix the lower end of the wall, so that the wall is arranged in the cavity in a vertical state; A wall panel is installed on the inner side of the wall body, and a decorative panel is installed on the outer side of the wall body.

2. The assembled exterior wall system according to claim 1, characterized in that: The first limiting member is a through-rod bolt; The through-rod bolt comprises a first bolt portion and a second bolt portion connected to each other, wherein the first bolt portion is limited on the component, and the upper end of the wall is limited on the second bolt portion.

3. The assembled exterior wall system according to claim 2, characterized in that: The component is provided with a limiting hole, the bolt part 1 passes through the limiting hole, the bolt part 1 is provided with a nut, and the component is limited between the two nuts of the bolt part 1.

4. The assembled exterior wall system according to claim 1, characterized in that: The first limiting member is a limiting plate; The limiting plate comprises a limiting part 1 and a limiting part 2 which are connected to each other. The limiting part 1 is limited on the component by welding, and the upper end of the wall is limited on the limiting part 2.

5. The assembled exterior wall system according to claim 1, characterized in that: The component is provided with a through hole 1, the connecting piece 1 is provided with a fixing bolt 1, the fixing bolt 1 passes through the through hole 1, the fixing bolt 1 moves in the through hole 1 along the length direction of the steel beam, and the fixing bolt 1 is provided with a nut 1; The connecting member 1 is provided with a through hole 2 and a through hole 3, and the fixing bolt 1 passes through the through hole 2, so that the connecting member 1 moves on the fixing bolt 1 along the width direction of the steel beam; The wall is provided with a second fixing bolt, and the second fixing bolt passes through the third through hole, so that the first connecting member moves on the second fixing bolt along the height direction of the steel beam, and the second fixing bolt is provided with a second nut.

6. The assembled exterior wall system according to claim 1, characterized in that: The second limiting member includes a third limiting portion and a fourth limiting portion connected to each other. The third limiting portion is fixed to the floor slab by expansion bolts. The wall is supported on the third limiting portion and is limited on the fourth limiting portion.

7. The assembled exterior wall system according to claim 1, characterized in that: The first connecting member and the second connecting member are both L-shaped.

8. The assembled exterior wall system according to claim 1, characterized in that: A dry hanging piece is arranged on the outer side of the wall, a keel is installed on the dry hanging piece, and the decorative panel is fixed on the keel.

9. The assembled exterior wall system according to claim 1, characterized in that: A steel structure is provided on the inner side of the wall, and the wall panel is fixed on the steel structure.

10. The construction method of the assembled exterior wall system according to claim 3, characterized in that: The steps include: S1. Component positioning welding: measure and lay out the steel beam to determine the component installation position, and then weld the U-shaped component to the steel beam; S2. Fixing of the second limiter: measure and lay out the lines at the floor slab to determine the installation position of the second limiter, and then fix the second limiter to the floor slab with expansion bolts; S3. Fixing with through-rod bolts: screw a nut into the bolt part 1 of the through-rod bolt, then pass the bolt part 1 through the limiting hole of the component, then screw another nut into the bolt part 1, adjust the positions of the two nuts on the bolt part 1, and lock the two nuts on the single through-rod bolt on the component so that the horizontal distance between the bolt part 2 and the component is the set distance; S4. Wall installation: (1) Push the wall horizontally between the first and second limit members, and limit the upper end of the wall on the second bolt portion, and limit the lower end of the wall on the second limit member; (2) Fixing the connecting member 1 on the component, and fixing the connecting member 1 to the upper end of the wall, so that the connecting member 1 and the limiting member 1 fix the upper end of the wall; (3) Adjust the horizontal and vertical directions of the wall; (4) Fix the second connecting member on the floor slab, and fix the second connecting member to the lower end of the wall, so that the second connecting member and the second limiting member fix the lower end of the wall; S5. Install the wall panel on the inner side of the wall; S6. Install the decorative panel on the outside of the wall.

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