CN104912230B - A kind of modular assembly formula combined wall and its connected mode - Google Patents

Abstract

A kind of modular assembly formula combined wall and its connected mode, the central filler of light gauge cold-formed steel shape framework have foam cement core；Self-leveling cement surface layer is Nian Jie with foam cement core, and self-leveling cement surface layer is connected with light gauge cold-formed steel shape framework by tapping screw, light gauge cold-formed steel shape framework, foam cement core, self-leveling cement surface layer connection comprising modules assembled combined wall.Adjacent two modular assemblies formula combined wall realizes level connection joint by the connector between wall body module.Modular assembly formula combined wall and floor modules realize vertical connection by the connector between wall and floor modules.Modular assembly formula combined wall of the invention is structure set load-bearing, insulation, the wall of decorations integration, and integrated and assembling degree is high, and lower cost for material, and labour cost is largely saved, and overall cost is cheap, simple structure.

Description

A modular assembled composite wall and its connection method

technical field

The invention relates to an assembled composite wall produced in a modularized industry and a connection method between the walls and between the wall and the floor, belonging to the technical field of structural engineering, in particular to a combination of green decoration, heat preservation and structural integration The composite wall body and its production and manufacturing method, as well as the connection mode and installation process between the modules of the composite wall body.

Background technique

In the field of civil engineering at home and abroad, the walls suitable for low-rise prefabricated buildings are mainly divided into wood panel walls, prefabricated reinforced concrete shear walls, steel plate shear walls, cold-formed thin-walled steel composite walls, cold-formed thin-walled steel concrete shears force wall. At home and abroad, there are many examples of successfully using the above walls to form building systems, such as wood structure systems, modular reinforced concrete wall panel structure systems, light steel container module systems, and cold-formed thin-walled steel residential systems. However, at present, the degree of assembly of most prefabricated walls at home and abroad is still at the component level, and there is still a certain gap in the modular design, modular production, modular transportation, and modular installation of the overall wall, especially There is still a lot of room for development in green decoration, heat preservation, and structurally integrated prefabricated walls. Due to the low degree of modular assembly of the current prefabricated wall, a large amount of labor costs are required for processing and installation, resulting in high cost of the wall, which in turn increases the cost of the overall building. Therefore, inventing a composite wall with a high degree of modular assembly, suitable for industrial assembly line production, integrating decoration, heat preservation, and structure can not only save a lot of labor costs, but also reduce the wet work and construction period on site. It has great practical engineering significance in construction.

Contents of the invention

The invention proposes a new type of modular assembled composite wall and its connection method. The purpose of the invention is to bear the vertical load and horizontal load through the cold-formed thin-walled steel frame, and fill the cold-formed thin-walled steel frame with foamed cement as the core material. In the wall-shaped steel frame, it is used to keep warm and limit the deformation of the cold-formed thin-walled steel frame to improve the bearing capacity of the wall. The cold-formed thin-walled steel frame is attached with a self-leveling cement surface layer to improve the horizontal shear resistance, crack resistance, Impact resistance, the decoration of the wall is completed through the facade processing of the self-leveling cement surface layer, and the connection between the walls is realized through the connection method formed by the M-shaped steel, high-strength bolts, and square steel pipes in the middle and outer frames of the cold-formed thin-walled steel frame. Horizontal connection and vertical connection to the floor. The composite wall has a high degree of modular assembly, is suitable for industrial assembly line production, and integrates decoration, heat preservation, and structure. Its connection method is safe and reliable, and it is easy to construct, install, and replace, and the cost is low.

To achieve the above object, the technical solution adopted in the present invention is:

A modular assembled composite wall and its connection method, wherein the composite wall includes a cold-formed thin-walled steel frame (1), a foamed cement core (2), a self-leveling cement surface (3), a wall Connectors (4) between modules, connectors (5) between wall and floor modules, square steel pipes (6), high-strength bolts (7); cold-formed thin-walled steel frames (1) include vertical M-shaped steel (1a ), vertical C-shaped steel (1b), horizontal M-shaped steel (1c), U-shaped connector (1d); the middle of cold-formed thin-walled steel frame (1) is filled with foamed cement core material (2); self-leveling cement The surface layer (3) is bonded to the foamed cement core material (2), and the self-leveling cement surface layer (3) is connected to the cold-formed thin-walled steel frame (1) through self-tapping screws, and the cold-formed thin-walled steel frame (1) ), the foamed cement core material (2), and the self-leveling cement surface layer (3) are connected to form a modular assembled composite wall.

Square steel pipes (6) are arranged horizontally between two adjacent modular assembled composite walls, and the square steel pipes (6) are fixedly connected to the vertical M-shaped steel (1a) through two sets of high-strength bolts (7); (6), two sets of high-strength bolts (7) and the vertical M-shaped steel (1a) of two adjacent walls form the connector (4) between the wall modules, and the connection between the wall modules (4) is realized. The horizontal connection between two adjacent modular prefabricated composite walls.

Two sets of square steel pipes (6) are respectively arranged in the vertical direction of the modular assembly composite wall and floor modules, and the two sets of square steel pipes (6) are fixedly connected to the horizontal M-shaped steel (1c) by another two sets of high-strength bolts (7) Two groups of square steel pipes (6), two groups of high-strength bolts (7) and the transverse M-shaped steel (1c) in the wall module and the floor module form the connector (5) between the wall and the floor module, through the wall and the floor module The connectors (5) between the modules realize the vertical connection between the wall modules and the floor modules.

The cold-formed thin-walled steel frame (1) is to place the vertical M-shaped steel (1a), vertical C-shaped steel (1b), and horizontal M-shaped steel (1c) that have been cut according to the modular size on the workbench of the factory assembly line for pre-positioning. , the vertical M-shaped steel (1a) and the horizontal M-shaped steel (1c) are connected by self-tapping screws using U connectors (1d) to form a rectangular frame; the vertical C-shaped steel (1b) and the horizontal M-shaped steel (1c) are vertically connected to form a ten The cross-shaped structure is connected with the inner wall of a rectangular frame composed of vertical M-shaped steel (1a) and horizontal M-shaped steel (1c) through self-tapping screws.

Wall thickness of vertical M-shaped steel (1a), vertical C-shaped steel (1b), horizontal M-shaped steel (1c), U-shaped connector (1d), and square steel pipe (6) in cold-formed thin-walled steel frame (1) 0.7mm-3mm cold-formed thin-walled steel, the strength is Q235, Q345, LQ550, etc. The model of high-strength bolt (7) is M8-M16. The cross-sectional forms of the vertical M-shaped steel (1a) and the horizontal M-shaped steel (1c) are M-shaped, concave, convex, a few-shaped, dovetail, etc.

The cement of the foamed cement core material (2) is made of sulfoaluminate cement or Portland cement, which is foamed and solidified by adding a foaming agent. Its dry density is 200-500Kg/m ³ , and its compressive strength is greater than or equal to 2Mpa. The coefficient is less than 0.055w/mk. Its material type can also be other lightweight thermal insulation materials, such as polystyrene foam, lightweight aggregate concrete, cement and lightweight aggregate mixture, etc.

The anti-cracking material in the self-leveling cement surface layer (3) is a steel mesh sheet or glass fiber with a diameter of 2mm-6mm. The cement is ordinary cement, improved cement, Portland cement, aluminate cement, etc., and the self-leveling cement The thickness of the surface layer (3) is 1mm-10mm; the cured self-leveling cement surface layer (3) is firmly bonded to the foamed cement core material (2), and is bonded to the cold-formed thin-walled steel frame (1) by self-tapping Connected by screws, the distance between self-tapping screws when connecting with vertical M-shaped steel (1a) and horizontal M-shaped steel (1c) is less than or equal to 150mm, and the distance between self-tapping screws when connecting with vertical C-shaped steel (1b) is less than or equal to 300mm.

The surface decorative layer in the self-leveling cement surface layer (3) can be made into different decorative patterns to achieve the effect of decoration, such as brick joint patterns, imitation stone patterns, tile edge patterns and the like.

The surface decoration layer in the self-leveling cement surface layer (3) can be made into decorative decoration effects of different colors, such as using colored cement, various architectural coatings, wood boards, PVC boards, aluminum-plastic boards, plywood, ceramic tiles and other decorations Material.

The connectors (4) between the wall modules are formed by using the cross-sectional shape of the vertical M-shaped steel (1a) in combination with the supporting square steel pipes (6) and fixed by high-strength bolts (7).

The connecting piece (5) between the wall and the floor module is formed by using the cross-sectional shape of the transverse M-shaped steel (1c) in combination with the supporting square steel pipe (6) and fixed by high-strength bolts (7).

The present invention is based on the improvement of the traditional cold-formed thin-walled steel composite wall. Compared with it, the present invention has the following advantages:

1. The foamed cement core material is cast-in-place as an insulation layer and filled into the cold-formed thin-walled steel frame, which not only plays a good role in heat preservation, but also limits the deformation of the cold-formed steel and improves the bearing capacity of the overall wall module.

2. The vertical and transverse edge members in the cold-formed thin-walled steel frame adopt M-shaped steel, which can not only make full use of its section characteristics to provide higher bearing capacity, but also use its section shape to form a reliable connection between wall panels.

3. The self-leveling cement surface layer added to the cold-formed thin-walled steel frame can not only improve the horizontal shear resistance, crack resistance and impact resistance of the wall, but also complete the interior and exterior decoration of the wall module.

4. During the actual production of the wall module, each component is completely digitally processed, assembled and connected through the factory assembly line according to the modular size, which can not only ensure the production quality and precision and reduce the difficulty of assembly, but also greatly improve the production efficiency and save a lot Labor costs, reduce the overall cost.

5. During the actual installation of the wall module, the new connection method between the modules formed by the M-shaped steel, square steel pipe and high-strength bolts in the wall can not only provide a more stable and safe connection, but also improve the installation between the modules. efficiency. The degree of on-site assembly is improved from the installation of individual components in the traditional cold-formed thin-walled steel composite wall to the installation of the entire wall module, which greatly improves the degree of on-site assembly and saves the construction period.

6. The modular assembly type composite wall of the present invention is a wall integrating structural load-bearing, heat preservation, and decoration. Simple.

Description of drawings

Figure 1 is a schematic diagram of a cold-formed thin-walled steel frame.

Figure 2 is an exploded schematic diagram of a cold-formed thin-walled steel frame member.

Fig. 3 is a schematic diagram of a U-shaped connector.

Fig. 4 is a schematic diagram of self-tapping screw connection of vertical, horizontal and U-shaped connectors.

Figure 5 is a layout plan of reserved holes for self-tapping screws and high-strength bolts in cold-formed thin-walled steel frames (Note: + is reserved for self-tapping screws, ● is reserved for high-strength bolts).

Fig. 6 is a schematic diagram of the self-leveling cement surface layer and the reserved holes for high-strength bolts.

Fig. 7 is a plan view of connection between wall modules and between wall and floor modules.

Fig. 8 is a connection mode diagram between wall modules (B-B sectional view).

Fig. 9 is a connection mode diagram (A-A sectional view) between the wall module and the floor module.

Fig. 10 is a detailed diagram of the connection mode between the wall modules.

Fig. 11 is an overall structural diagram of a modular assembled composite wall.

In the picture:

1-Cold-formed thin-walled steel frame, 1a-vertical M-shaped steel, 1b-vertical C-shaped steel, 1c-horizontal M-shaped steel, 1d-U-shaped connector, 2-foamed cement core material, 3-self-leveling cement surface layer, 4-connectors between wall modules, 5-connectors between wall and floor modules, 6-square steel pipes, 7-high-strength bolts.

detailed description

Describe the best embodiment of the present invention in detail below in conjunction with technical scheme and accompanying drawing:

Production of modular prefabricated composite walls:

During the specific implementation, firstly, the vertical M-shaped steel (1a), the vertical C-shaped steel (1b), the horizontal M-shaped steel (1c), and the U-shaped connector are cut according to the modulus size of the modular assembly type composite wall that is actually required. (1d), the above four components are pre-connected on the factory assembly line in the form of accompanying drawings 1 and 2, and then connected with self-tapping screws according to the connection method of accompanying drawing 4 to form a cold-formed thin-walled steel frame (1);

Punch out the reserved holes for self-tapping screws and high-strength bolts (7) on the intelligent digital stamping equipment assembly line of the factory according to the above-mentioned cold-formed thin-walled steel frame (1);

Screw the self-tapping screws into the reserved holes for the self-tapping screws in the cold-formed thin-walled steel frame (1) on the assembly line of the intelligent digital installation equipment in the factory according to Figure 5. The outer surface of the wall-shaped steel frame (1) is 5mm-8mm, and the high-strength bolts (7) are pre-installed in the reserved holes for high-strength bolts;

Put the cold-formed thin-walled steel frame (1) screwed into the self-tapping screws and high-strength bolts (7) into the assembly line template, and pour the cement slurry according to a certain ratio into the cold-formed thin-walled steel frame (1) , and lay steel mesh or glass fiber, and level it to form the lower layer of the 10mm self-leveling cement surface layer (3);

A certain ratio of foamed cement slurry and foaming agent is uniformly mixed and then poured into the cold-formed thin-walled steel frame (1), and the foamed cement core material (2) is formed through leveling and foaming expansion; the hardened The foamed cement core material (2) and the protruding self-tapping screws can compound the lower layer of the self-leveling cement surface layer (3) and the cold-formed thin-walled steel frame (1) into a whole;

Cut off the foamed cement core material (2) protruding from the upper surface of the cold-formed thin-walled steel frame (1), pour a certain proportion of cement slurry into the cold-formed thin-walled steel frame (1), and lay steel bars Mesh or glass fiber, and level it to form the upper layer of the self-leveling cement surface layer (3) of 10mm; after the upper layer of the self-leveling cement surface layer (3) reaches a certain strength, demould and remove the high-strength bolts ( 7) It can be made into a modular assembled composite wall.

The connection method of the modular prefabricated composite wall:

Place the floor module (with horizontal M-shaped steel 1c around it) matched with the modular assembly composite wall on the leveled foundation, put the square steel pipe (6) with reserved holes into the concave shape of the upper surface of the floor in the horizontal M-shaped steel (1c), and connect the horizontal square steel pipe (6) with the horizontal M-shaped steel (1c) in the floor slab along the horizontal direction through high-strength bolts (7), and then connect the lower end with a concave horizontal M-shaped steel (1c ) modular assembly composite wall is set on the horizontal square steel pipe (6) and connected horizontally with high-strength bolts (7) to form the connection between the wall module and the floor module as shown in Figure 9.

Insert the vertical M-shaped steel (1a) on the right side of the wall assembled with the floor module into the vertical square steel pipe (6), and connect it vertically with high-strength bolts, and connect the vertical M-shaped steel on the left side of the other wall module The section steel (1a) is inserted into the vertical square steel pipe (6), and the lower side is inserted into the horizontal square steel pipe (6) in the floor module. Align the horizontal and vertical bolt holes of the wall module with the bolts of the square steel pipe, and use high-strength bolts Connect to form the connection between the wall modules as shown in Figure 8.

Claims (9)

1. A modular assembled composite wall, characterized in that: the composite wall comprises a cold-formed thin-walled steel frame (1), a foamed cement core (2), a self-leveling cement surface (3), a wall Connectors (4) between modules, connectors (5) between wall and floor modules, square steel pipes (6), high-strength bolts (7); cold-formed thin-walled steel frames (1) include vertical M-shaped steel (1a ), vertical C-shaped steel (1b), horizontal M-shaped steel (1c), U-shaped connector (1d); the middle of cold-formed thin-walled steel frame (1) is filled with foamed cement core material (2); self-leveling cement The surface layer (3) is bonded to the foamed cement core material (2), and the self-leveling cement surface layer (3) is connected to the cold-formed thin-walled steel frame (1) through self-tapping screws, and the cold-formed thin-walled steel frame (1) ), the foamed cement core material (2), and the self-leveling cement surface layer (3) are connected to form a modular assembled composite wall; Square steel pipes (6) are arranged horizontally between two adjacent modular assembled composite walls, and the square steel pipes (6) are fixedly connected to the vertical M-shaped steel (1a) by two sets of high-strength bolts (7); The square steel pipe (6), two sets of high-strength bolts (7) and the vertical M-shaped steel (1a) of two adjacent walls form the connecting piece (4) between the wall modules, and the connecting piece (4) between the wall modules Realize the horizontal connection between two adjacent modular prefabricated composite walls; Two sets of square steel pipes (6) are respectively arranged in the vertical direction of the modular assembly composite wall and floor modules, and the two sets of square steel pipes (6) are fixedly connected to the horizontal M-shaped steel (1c) by another two sets of high-strength bolts (7) Two groups of square steel pipes (6), two groups of high-strength bolts (7) and the transverse M-shaped steel (1c) in the wall module and the floor module form the connector between the wall and the floor module, through the connection between the wall and the floor module The connector (5) realizes the vertical connection between the wall module and the floor module. 2. A modular assembled composite wall according to claim 1, characterized in that: the cold-formed thin-walled steel frame (1) is a vertical M-shaped steel (1a) that will be blanked according to the modular size, The vertical C-shaped steel (1b) and the horizontal M-shaped steel (1c) are placed on the workbench of the factory assembly line for pre-positioning, and the vertical M-shaped steel (1a) and the horizontal M-shaped steel (1c) are connected by self-tapping screws using U connectors (1d) form a rectangular frame; the vertical C-shaped steel (1b) and the horizontal M-shaped steel (1c) are vertically connected to each other to form a cross-shaped structure, and the cross-shaped structure is combined with the vertical M-shaped steel (1a) and the horizontal M-shaped steel (1c). Attached by self-tapping screws. 3. A modular assembly type composite wall according to claim 1, characterized in that: vertical M-shaped steel (1a), vertical C-shaped steel (1b) in the cold-formed thin-walled steel frame (1), Transverse M-shaped steel (1c), U-shaped connector (1d), square steel pipe (6) are cold-formed thin-walled steel with a wall thickness of 0.7mm-3mm, and the strength is Q235, Q345 or LQ550; the model of high-strength bolts (7) It is M8-M16; the cross-sectional form of vertical M-shaped steel (1a) and horizontal M-shaped steel (1c) is M-shaped or concave or convex or several-shaped or dovetail-shaped. 4. A modular assembly type composite wall according to claim 1, characterized in that: the cement of the foamed cement core material (2) is sulphoaluminate cement or Portland cement adding foaming agent to foam It is cured, its dry density is 200-500Kg/m ³ , its compressive strength is greater than or equal to 2Mpa, and its thermal conductivity is less than 0.055w/mk; the material type of foamed cement core material (2) is either polystyrene foam or light aggregate Concrete or cement and lightweight aggregate mixture. 5. A kind of modular prefabricated composite wall according to claim 1, characterized in that: the anti-cracking material in the self-leveling cement surface layer (3) is a steel mesh sheet or glass fiber with a diameter of 2mm-6mm, cement It is ordinary cement or improved cement or Portland cement or aluminate cement; the thickness of the self-leveling cement surface layer (3) is 1mm-10mm; the cured self-leveling cement surface layer (3) and the foamed cement core The material (2) is firmly bonded and connected with the cold-formed thin-walled steel frame (1) through self-tapping screws, and the distance between the self-tapping screws when connecting with the vertical M-shaped steel (1a) and the horizontal M-shaped steel (1c) is less than or equal to 150mm , when connecting with the vertical C-shaped steel (1b), the distance between the self-tapping screws is less than or equal to 300mm. 6. A modular assembled composite wall according to claim 1, characterized in that: the connectors (4) between the wall modules are square steel pipes combined with the cross-sectional shape of the vertical M-shaped steel (1a) (6) Connection formed by fixing with high-strength bolts (7). 7. A modular assembly type composite wall body according to claim 1, characterized in that: the connector (5) between the body of wall and the floor module is to utilize the cross-sectional shape of the transverse M-shaped steel (1c) in combination with the matching method The steel pipes (6) are fixedly connected by high-strength bolts (7). 8. A modular assembly type composite wall according to claim 1, characterized in that: the production of the modular assembly type composite wall is as follows, During the specific implementation, firstly, the vertical M-shaped steel (1a), the vertical C-shaped steel (1b), the horizontal M-shaped steel (1c), and the U-shaped connector are cut according to the modulus size of the modular assembly type composite wall that is actually required. (1d), the above four components are pre-connected on the factory assembly line, and then connected with self-tapping screws to form a cold-formed thin-walled steel frame (1); Punch out the reserved holes for self-tapping screws and high-strength bolts (7) on the intelligent digital stamping equipment assembly line of the above-mentioned cold-formed thin-walled steel frame (1); Screw the self-tapping screws into the self-tapping screw reserved holes in the cold-formed thin-walled steel frame (1) on the assembly line of the intelligent digital installation equipment in the factory. 1) The outer surface is 5mm-8mm, and the high-strength bolts (7) are pre-installed in the reserved holes for high-strength bolts; Put the cold-formed thin-walled steel frame (1) screwed into the self-tapping screws and high-strength bolts (7) into the assembly line template, and pour the cement slurry according to a certain ratio into the cold-formed thin-walled steel frame (1) , and lay steel mesh or glass fiber, and level it to form the lower layer of the 10mm self-leveling cement surface layer (3); A certain ratio of foamed cement slurry and foaming agent is uniformly mixed and then poured into the cold-formed thin-walled steel frame (1), and the foamed cement core material (2) is formed through leveling and foaming expansion; the hardened The foamed cement core material (2) and the protruding self-tapping screws can compound the lower layer of the self-leveling cement surface layer (3) and the cold-formed thin-walled steel frame (1) into a whole; Cut off the foamed cement core material (2) protruding from the upper surface of the cold-formed thin-walled steel frame (1), pour a certain proportion of cement slurry into the cold-formed thin-walled steel frame (1), and lay steel bars Mesh or glass fiber, and level it to form the upper layer of the self-leveling cement surface layer (3) of 10mm; after the upper layer of the self-leveling cement surface layer (3) reaches a certain strength, demould and remove the high-strength bolts ( 7) It can be made into a modular assembled composite wall. 9. A modular prefabricated composite wall according to claim 1, characterized in that: the connection method of the modular prefabricated composite wall: The floor module matched with the modular assembled composite wall is provided with horizontal M-shaped steel (1c) around it, placed on the leveled foundation, and the square steel pipe (6) with reserved holes is put into the upper surface of the floor slab Concave horizontal M-shaped steel (1c), and connect the horizontal square steel pipe (6) with the horizontal M-shaped steel (1c) in the floor through high-strength bolts (7) in the horizontal direction, and then connect the lower end with concave horizontal M-shaped steel (1c) The modular assembled composite wall body is set on the horizontal square steel pipe (6), and is connected in the horizontal direction with high-strength bolts (7), forming a connection mode between the wall body module and the floor slab module; Insert the vertical M-shaped steel (1a) on the right side of the wall assembled with the floor module into the vertical square steel pipe (6), and connect it vertically with high-strength bolts, and connect the vertical M-shaped steel on the left side of the other wall module (1a) Insert the vertical square steel pipe (6), the lower side is inserted into the horizontal square steel pipe (6) in the floor module, align the horizontal and vertical bolt holes of the wall module with the bolts of the square steel pipe, and connect them with high-strength bolts , forming the connection mode between the wall modules.