CN219386745U - Short-leg assembled light steel combined steel wire grid mortar-perlite-polystyrene enclosure wall - Google Patents

Abstract

The utility model discloses a short-leg assembled light steel combined steel wire grid mortar-perlite-polystyrene enclosure wall, including an assembled concrete short-limb shear wall, a connecting beam, a light steel frame, an inner leaf steel wire mesh mortar layer, a steel wire grid mortar-perlite-polystyrene heat preservation structure, a load-bearing steel wire grid frame, a light steel composite truss, a light steel frame steel wire mesh frame inner and outer leaf mortar surface layer sandwiched perlite-polyphenyl thermal insulation composite wall, and an outer leaf steel wire mesh cement mortar layer. It is the connection structure of the upper, lower and left and right outer steel wire mesh mortar layers of the outer insulation layer of the short-limb shear wall panel, the connection structure of the window hole self-tapping nail cluster, the combined connection structure, and the concrete post-casting strip. The utility model solves the connection problem of the fine and dense steel mesh in the mortar layer of the inner leaf of the composite filling wall, the connecting beam and the short-limb shear wall, and has good mechanical performance; at the same time, it can effectively resist the downward shear deformation of the mortar layer around the window frame under long-term load, and improves the waterproof performance of the wallboard.

Description

Short-leg assembled light steel combined steel wire grid mortar-perlite-polystyrene enclosure wall

technical field

The utility model belongs to the technical field of prefabricated concrete building structures, and relates to a short-limb assembled light steel combined steel wire grid mortar-perlite-polystyrene enclosure wall, in particular to a short-limb shear wall assembled light steel composite truss supporting steel wire grid mortar-perlite-polyphenyl composite enclosure wall.

Background technique

At present, prefabricated concrete structures are widely used in multi-storey and high-rise residential buildings, but the innovative development of matching thermal insulation and energy-saving prefabricated components is relatively lagging behind. Problems such as low thermal performance and low integration of the envelope structure of ultra-low energy consumption and near zero energy consumption buildings still exist. Therefore, it is a major demand for the development of national prefabricated green buildings to develop a multifunctional integrated prefabricated short-leg shear wall exterior wall system, and to further research and develop a prefabricated composite exterior wall integrating decoration, fire protection, waterproof, heat insulation, and weather resistance.

Short-leg shear walls refer to double-leg or multi-leg seismic walls with a wall section width-to-thickness ratio of 4≤H/B≤8. They are suitable for multi- and high-rise buildings. Compared with frame structures, their stiffness and internal force distribution are more reasonable. Compared with traditional long-leg shear walls with H/B>8, they have better structural layout flexibility and better economy.

Bottleneck problems in the existing technology: 1. The traditional external wall insulation structure is easy to fall off under the action of wind load and long-term load, and has poor weather resistance. In recent years, safety accidents caused by the falling off of the external wall insulation layer have occurred frequently. The use of the thermal insulation layer is limited by the height of the building. Since the external thermal insulation of the external wall is set along the overall height of the external wall of the building, and the elastic modulus of the thermal insulation board is low and the deformation is large, the gravity load of the mortar thermal insulation layer cannot be completely transmitted to the main structure of this layer. Therefore, as the height of the structure increases, the cumulative effect of gravity load will occur, which is not conducive to the overall stability of the external thermal insulation layer. Some regions in China have strictly limited the application height of the thin plaster external wall thermal insulation system, and require the thin plaster external wall thermal insulation system to prohibit the use of ceramic facing bricks to avoid the risk of falling off; The fire resistance of the thermal insulation wall is poor, and most external thermal insulation structures have no fire protection layer, and organic thermal insulation boards such as polystyrene, polyurethane, and foam rubber have poor fire resistance, which has led to many fire accidents in the external thermal insulation system of external walls; , it is very easy to cause the insulation structure to loosen and fall off; 6. The wall section between the traditional short-leg shear wall and the window opening is filled with lightweight wallboards. The weight is relatively large, and the thermal insulation performance is poor.

Utility model content

The technical problem to be solved by the utility model is to provide a short-leg shear wall assembly-type light steel composite truss supporting steel wire grid mortar-perlite-polystyrene composite enclosure wall and its method, which is suitable for the outer wall of the ultra-low energy consumption house with window openings of the concrete short-leg shear wall structure. The enclosure wall is light in weight and has good fire resistance and heat insulation performance.

In order to solve the problems of the technologies described above, the technical solution adopted by the utility model is:

Short limb shear wall assembled light steel composite truss supporting steel wire grid mortar-perlite-polystyrene composite enclosure wall includes:

The prefabricated concrete short-leg shear wall consists of short-limb shear walls and short-limb shear wall distribution steel bars, and the vertical connecting steel bars of the short-limb shear wall are bound by tie bars to form a shear wall reinforcement cage. The lower part of the vertical connecting steel bars of the short-limb shear wall is connected with a grouting sleeve, and the part of the vertical connecting steel bar of the short-limb shear wall protruding from the top of the wall panel is connected with the prefabricated concrete floor and the grouting sleeve of the upper layer;

Coupling beams, including upper coupling beams and lower coupling beams, the upper coupling beams on the upper side of the window opening and the lower coupling beams on the lower side of the window opening are formed by pouring concrete with the coupling beam reinforcement cages bound inside and the vertical connection reinforcement of the coupling beams inside the reinforcement cages;

The light steel frame is arranged on the outside of the distribution reinforcement of the short-leg shear wall. It is welded by the vertical keel of the light steel frame and the transverse keel of the light steel frame.

The inner leaf steel wire mesh mortar layer is composed of the inner leaf steel wire mesh poured inner leaf mortar layer, the flange of the U-shaped steel wire is spot welded to the inner leaf steel mesh, and the web bar is welded to the light steel frame;

The steel wire grid mortar-perlite-polystyrene insulation structure is composed of polystyrene insulation board with polystyrene insulation board dovetail groove, perlite board, outer leaf mortar layer and outer leaf steel wire mesh. The polystyrene insulation board dovetail groove is mechanically occluded with the inner leaf mortar connection layer. The steel wire grid mortar-perlite-polyphenyl insulation structure is connected with the prefabricated concrete short-leg shear wall and the upper and lower connecting beams through light steel composite trusses and load-bearing steel wire grids;

The load-bearing steel wire frame is composed of the outer leaf steel wire mesh, the inner leaf steel wire mesh spot-welded steel wire mesh frame horizontal belly wire and the steel wire mesh frame oblique belly wire. The steel wire mesh frame horizontal belly wire and the steel wire mesh frame oblique belly wire penetrate the perlite board and the polystyrene insulation board and then extend into the shear wall concrete, so as to realize the connection between the steel wire frame mortar-perlite-polystyrene insulation structure and the concrete shear wall;

The light steel composite truss is composed of a light steel composite truss consisting of an outer leaf mortar layer and an outer leaf steel wire mesh, a steel mesh mortar layer with an outer chord, a vertical keel of a light steel frame, and an inner chord of a horizontal keel of a light steel frame, the web of the long self-tapping nail connector of the horizontal countersunk broken bridge, and the chord of the long self-tapping nail connector of the combined countersunk broken bridge; transverse keel;

The inner and outer leaf mortar surface layer of the light steel frame steel wire mesh frame sandwiches perlite-polystyrene thermal insulation composite wall, the outer leaf steel mesh mortar surface layer consists of the outer leaf of the composite wall mortar and the steel wire mesh of the outer leaf of the composite wall, the inner leaf steel mesh mortar layer composed of the inner leaf of the composite wall concrete mortar and the steel mesh of the inner leaf of the concrete mortar, and the perlite board of the composite wall and the polystyrene insulation board of the composite wall in the interlayer. After being welded with the steel wire mesh of the outer leaf of the composite wall, it passes through the perlite board and the polystyrene insulation board in turn, and the other end is welded with the steel mesh of the inner leaf of the concrete mortar to effectively tie the layers of the composite wall;

The outer leaf steel wire mesh cement mortar layer is wiped with a strip, which is the connection structure of the upper, lower, left and right outer steel mesh mortar layers of the outer insulation layer of the short limb shear wall panel, and is also the connection structure of the outer leaf of the steel mesh mortar of the composite filling wall and the outer insulation layer of the short limb shear wall panel; the outer leaf of the steel mesh mortar layer is reserved for a 75mm wide outer mortar surface layer. 0 width, 50mm spacing, 2mm diameter reinforced steel wire mesh, and apply thermal insulation mortar in the strips, and apply strips behind the steel mesh cement mortar layer on the outer leaves to ensure the integrity of the wall panel connection nodes, and have good water resistance to improve the weather resistance of the wall panels;

Window hole self-tapping nail block connection structure, the mortar strip of the window frame has a built-in mortar strip steel mesh, the mortar strip steel mesh overlaps with the inner leaf steel wire mesh and the outer leaf steel mesh, welds the force-transmitting steel plate on the mortar strip steel mesh and connects the C-shaped steel of the light steel frame grid of the window frame, uses self-tapping nails to pass through the connecting steel plate and self-tapping connects the mortar strip force-transmission steel plate and the light steel frame of the window frame, and finally uses mortar to smooth the groove of the mortar strip;

Combined connection structure, including the connection structure of upper and lower short limb shear wall distribution steel bars and grouting sleeve inner injection grouting material; shear wall connection structure composed of short limb shear wall and coupling beam concrete post-cast strips; insulation layer connection structure composed of polystyrene insulation board tongue and groove smeared with cement-based mortar; connection structure of steel wire mesh mortar layer on the outer leaf of the shear wall connecting the outer leaf steel mesh mortar layer of the upper, lower, left and right wall panels; compound wall and steel mesh cement mortar on the outer leaf of the shear wall Strip construction after the layer; and the composite wall self-tapping nail cluster connection nodes of the reinforced mesh concrete mortar inner leaf of the composite filling wall and the upper and lower connecting beams;

Concrete post-pouring strips are the assembly and connection structure of short-leg shear walls and coupling beams. The horizontally distributed steel bars of the short-leg shear walls protrude from the left and right ends of the wall panels by 280 mm to overlap with the longitudinal bars of the adjacent coupling beams and bind the vertical structural bars and tie bars. After that, the post-cast concrete strips are poured to complete the assembly and connection of the left and right wall panels.

Preferably, the short-limb shear wall is a prefabricated reinforced concrete L-shaped short-limb shear wall, the thickness of the wallboard is 250mm, and the width of a single limb is 1250mm; the distributed reinforcement of the short-limb shear wall adopts double rows of reinforcement, the horizontal distribution of steel bars is 10mm in diameter and the spacing is 200mm, and the vertical distribution of reinforcement is 10mm in diameter and 200mm in spacing. The steel bars with a diameter of 16mm are arranged as the vertical connecting steel bars of the upper and lower short limb shear walls; the top protruding wall panels of the longitudinal connecting steel bars of the short limb shear walls are connected to the floor and upper wall panels by 240mm;

Preferably, the upper connecting beam and the lower connecting beam are connection structures between two wall piers, respectively located at the upper and lower parts of the window opening. The section height of the upper connecting beam is the distance from the upper edge of the window opening to the concrete top of the wall panel, the height of the lower connecting beam is 450mm, and the section width is equal to the thickness of the wall; Φ10mm longitudinal reinforcement and Φ8mm stirrup are arranged inside the connecting beam; the longitudinal reinforcement and the stirrup form a connecting beam reinforcement cage; Φ16 connecting beam vertical connecting reinforcement is arranged between the longitudinal reinforcement of the connecting beam , the upper end of the vertical connecting steel bar in the upper connecting beam of the lower wall board is connected with the grouting sleeve at the bottom of the vertical connecting steel bar of the lower connecting beam of the upper wall board; the upper and lower connecting beams are equipped with light steel grids.

Preferably, the vertical keel of the light steel sash and the horizontal keel of the light steel sash are welded by C-shaped steel with vertical and horizontal spacings not greater than 800. The light steel sash is spot-welded with U-shaped steel wires with a diameter of 2 mm at a distance of 10 mm from the inner leaf steel wire mesh to connect the steel mesh and the light steel sash respectively. The distance between the horizontal and vertical spot welding is not more than 200 mm; the C-shaped steel section of the keel is 70 mm high, 50 mm wide, and the plate thickness is not less than 2 mm. The light steel frame grid has a flange groove of 140mm wide and 60mm high to form a protruding steel section with a net distance of 140mm, a height of 60mm, and a width of 60mm; the vertical keel steel section of the light steel frame grid is anchored into the short leg shear wall and the connecting beam at a position of 10mm away from the horizontal and vertical reinforcement of the shear wall and the connecting beam; after pouring the shear wall concrete, the 10mm high section of the light steel grid with the protruding steel section is embedded in the shear wall concrete 10mm, and the protruding steel section is anchored in the shear wall concrete by 60mm; in order to facilitate the self-tapping screw to connect the web of the light steel frame keel, a round hole smaller than the diameter of the self-tapping screw is opened on the web of the vertical keel of the light steel frame and the web of the transverse keel of the light steel frame, so that the self-tapping screw can pass through.

Preferably, the inner leaf mortar layer and the inner leaf steel wire mesh are the mortar layer between the dovetail groove of the polystyrene insulation board and the short limb shear wall, the upper connecting beam and the lower connecting beam, the net distance between the inner leaf steel wire mesh and the polystyrene insulation board with dovetail groove is 10mm, and the 14mm thick mortar with a strength of not less than C20 is used to smooth the gap between the inner leaf steel wire mesh and the dovetail groove of the polystyrene insulation board; the U-shaped steel wire is the connection structure between the inner leaf steel wire mesh and the light steel frame The bent flange is spot-welded with the steel wire mesh of the inner leaf, and the web bar is welded with the vertical keel of the light steel frame and the transverse keel of the light steel frame.

Preferably, the window frame mortar strip is a window frame edge-sealing concrete mortar strip connecting the inner leaf mortar layer and the outer leaf mortar layer. Its thickness is 50mm, and a mortar strip steel mesh with a diameter of 4mm and a spacing of 200mm is arranged inside. The mortar strip steel mesh is embedded in the inner leaf mortar connection layer and the outer leaf mortar layer 17100mm. Self-tapping drilling into the force-transmitting steel plate welded on the mortar strip steel bar and the light steel frame at the window frame, using high-performance mortar to fill the groove of the window frame mortar strip at the force-transmitting steel plate of the mortar strip to form a self-tapping nail cluster node at the window opening.

Preferably, the outer leaf of the composite wall mortar is a 25mm thick mortar layer with a strength of no less than C20 on the outside of the composite filled wallboard. The outer leaf of the composite wall mortar has a built-in steel wire mesh with a diameter of 2mm and a spacing of 50mm, and the net mortar protective layer of the steel mesh is 10mm; Concrete mortar inner leaf reinforcement mesh, composite wall concrete mortar inner leaf surface is flush with the inner surface of short limb shear wall and coupling beam.

Preferably, the composite wall self-tapping nail cluster connection node is a connection node structure between the inner leaf of the composite wall concrete mortar and the short-leg shear wall and the connecting beam; the left and right ends of the inner side of the reinforced mesh concrete mortar of the composite wall are connected with the short-limb shear wall, and the force-transmitting steel plates welded on the horizontally distributed steel bars of the short-limb shear wall and the force-transmitting steel plates welded on the steel mesh of the inner leaves of the concrete mortar are connected by self-tapping screws through the connecting steel plate with holes; the upper and lower ends of the inner side of the composite wall reinforced mesh concrete mortar are connected with the connecting beam Self-tapping nails pass through the connecting steel plates with self-tapping nail holes, and self-tapping connects the force-transmitting steel plates welded on the inner leaf steel mesh of the composite wall and the force-transmitting steel plates welded on the stirrups of the connecting beams, thus forming a self-tapping nail cluster connection node;

The horizontal countersunk head broken bridge long self-tapping screw connector and the combined countersunk head broken bridge long self-tapping screw connector are the web members of the light steel composite truss; the connector sinks into the countersunk head fiber composite connector with a size not less than 50mm, drills through the perlite-polystyrene insulation layer, and self-tapping connects the light steel frame grid; The hollow round rod with a length of 50 mm and the hollow round rod with an outer diameter of 14 mm and an inner diameter of 6 mm and a length of 20 mm are formed at one time. The diameter of the steel self-tapping nail is 10mm, the nail shaft is 6mm, and the thread is threaded throughout; the horizontal countersunk broken bridge long self-tapping screw connector is arranged on the top and bottom of the vertical keel of the light steel frame, and the combined countersunk broken bridge long self-tapping screw connector is arranged in the middle; the horizontal countersunk broken bridge long self-tapping screw connector is arranged on the horizontal keel of the light steel frame grid, and the spacing does not exceed 800mm.

Preferably, the horizontal abdominal wires of the steel wire grid frame and the oblique abdominal wires of the steel wire grid frame are the supporting steel wires connecting the inner leaf steel wire mesh and the outer leaf steel wire mesh; the steel wire mesh frame is composed of the inner leaf steel wire mesh and the outer leaf steel wire mesh with a spot welding distance of 200 mm, a steel wire grid horizontal abdominal wire with a diameter of 2 mm, and an oblique abdominal wire of the steel wire grid frame with an upward angle of 45 degrees. The abdominal wire penetrates the perlite board and the inner leaf mortar layer. The horizontal projection of the shear force extending into the short limb is 60mm; in the composite filling wall, one end of the horizontal abdominal wire of the steel wire grid and the oblique abdominal wire of the steel wire grid is welded with the steel wire mesh of the outer leaf of the composite wall, penetrates the perlite board of the composite wall and the polystyrene insulation board of the composite wall, and the other end is welded with the steel mesh of the inner leaf of the concrete mortar, and anchored in the inner leaf of the concrete mortar of the composite wall.

The method of the short-leg shear wall assembled light steel composite truss supporting the steel wire grid mortar-perlite-polystyrene composite enclosure wall includes the following steps:

The first step, the factory processes and welds the vertical and horizontal C-shaped steel of the light steel frame, binds the short-leg shear wall reinforcement cage and the connecting beam reinforcement cage, installs the grouting sleeve, purchases the polystyrene insulation board and the perlite board, cuts and assembles them into the required size; prepares the internal and external steel wire mesh, the steel wire mesh frame belly wire, and the window frame mortar strip steel mesh welded with the force-transmitting steel plate, prefabricated horizontal countersunk broken bridge long self-tapping nail connectors and combined countersunk head broken bridge long self-tapping nail connectors;

The second step is to install and position the light steel frame on the steel cage of the short-leg shear wall, connect the inner steel wire mesh to the light steel frame through U-shaped steel wires, and use engineering plastics and other pads to set the thickness of the mortar layer in the distance between the light steel frame and the dovetail groove surface of the polystyrene insulation board and position the polystyrene insulation board, perlite board and outer steel wire mesh; bind the window frame mortar strip steel mesh with the inner and outer leaf steel mesh;

The third step is to penetrate the perlite board and polystyrene insulation board in turn through the horizontal web wire and the oblique web wire of the steel wire grid frame, and spot weld the two ends of the web frame web wire with the inner and outer steel wire mesh to form a wire grid frame, and extend into the shear wall and the interior of the connecting beam for a certain anchorage distance; the horizontal broken bridge self-tapping screw connector and the combined broken bridge self-tapping screw connector long self-tapping in turn penetrate the perlite board and the polystyrene insulation board, self-tapping connects the light steel frame, and extends into the shear wall and the connecting beam. A certain anchoring distance;

The fourth step is to pour the inner and outer wire mesh mortar surfaces and the window frame mortar strips with grooves, and maintain them. The mortar strips of the window frame are connected with the connecting beams of the window openings through self-tapping nail clusters and joints;

The fifth step is to pour the shear wall concrete with the steel wire grid mortar-perlite-polystyrene insulation structure as the base form, and maintain it;

The sixth step is to process the steel wire mesh of the outer leaf of the composite wall, the perlite board of the composite wall, the polystyrene insulation board of the composite wall and the steel mesh of the inner leaf of the concrete mortar; weld the horizontal and oblique abdominal wire ends of the steel wire frame to the steel wire mesh of the outer leaf of the composite wall, and pass through the perlite board, the polystyrene insulation board and the steel mesh of the inner leaf in turn; Weld the force-transmitting steel plate on the steel mesh of the inner leaf of the concrete mortar;

The seventh step is to pour the outer leaf of the compound wall mortar and the inner leaf of the compound wall concrete mortar in the factory. The outer leaf of the compound wall mortar is reserved and then plastered with mortar strips, and the inner leaf of the compound wall concrete mortar is reserved on the outer side of the force-transmitting steel plate welded to the steel mesh;

The eighth step is to maintain and support the steel wire grid mortar-perlite-polystyrene thermal insulation composite filling wall, and transport it to the construction site;

The ninth step is to overlap the short-leg shear wall with the adjacent horizontal steel bars of the connecting beam, bind the vertical structural steel bars and tie steel bars, and pour the vertical concrete back between the short-leg shear wall and the adjacent connecting beam with the inner support formwork, and the outer polystyrene insulation board doubles as a formwork;

The tenth step is to lay a mortar cushion on the lower floor; connect the short-leg shear wall of the lower floor and the longitudinal steel bars at the top of the connecting beam with the grouting sleeve at the bottom of the upper shear wall and the connecting beam, and connect the groove and groove of the polystyrene insulation board of the upper and lower wall panels and the post-applied mortar strips. Concrete is poured in the vertical post-pouring strips of adjacent walls and connecting beams, additional steel wire mesh is bound in the vertical reserved strips, and the vertical mortar strips between the left and right wall panels are smoothed with high-performance thermal insulation mortar;

The eleventh step is to connect the composite filling wall with the upper and lower connecting beams and the left and right short-leg shear walls through the self-tapping screw block connection structure of the inner leaf reinforced mesh concrete mortar surface layer; wrap the reinforced steel mesh in the strip after the outer leaf of the steel mesh mortar of the composite filling wall and the outer leaf of the steel mesh mortar of the short limb shear wall, and smooth it with high-performance thermal insulation mortar;

The twelfth step, remove the formwork, paint the shear wall with waterproof paint and fill the mortar surface of the outer leaf of the wall, and use the interior wall paint to paint the inner surface of the short limb shear wall and the inner leaf of the composite filled wall reinforced mesh mortar.

The beneficial effects produced by adopting the above-mentioned technical scheme are:

1. The steel mesh mortar-perlite surface layer solves the shortcomings of poor fire resistance of traditional external thermal insulation walls. The perlite board has the advantages of good fire resistance and heat insulation performance. The high-performance mortar layer has good structure, waterproof and weather resistance.

2. The light steel composite truss and load-bearing steel wire grid structure can effectively resist the downward shear deformation of the mortar layer under long-term load, and can control this shear deformation on each floor and not transmit downward, which solves the technical bottleneck problem that the deformation of the ultra-thick insulation layer is difficult to control under long-term load.

3. The perlite-polystyrene thermal insulation composite wall section between the short-leg shear wall and the window opening is filled with light steel frame steel wire grid inner and outer leaf mortar surface layer, which overcomes the disadvantages of relatively large weight and relatively poor heat preservation of the wall section between the short-leg shear wall and the window opening.

4. The self-tapping nail cluster connection node solves the connection problem of the fine and dense steel mesh in the leaf mortar layer in the composite filling wall, the connecting beam and the short-limb shear wall, and has good mechanical performance. At the same time, it can effectively resist the downward shear deformation of the mortar layer around the window frame under long-term load, and control the gravity load of the short-limb shear wall external insulation structure to this layer and not transmit it downward.

5. The post-wiping strip of steel mesh mortar in the combined connection structure enhances the integrity of the wallboard mortar surface, solves the joint connection problem of traditional insulation boards, improves the waterproof performance of wallboards, and makes the wallboard insulation structure have good weather resistance. The insulation board can be used as a formwork for the post-casting belt, which is convenient for assembly and construction.

Description of drawings

Figure 1 is a schematic diagram of the connection structure between the short-limb shear wall and the enclosure wall;

Fig. 2 is a schematic diagram of the sectional structure of 1-1 in Fig. 1;

Fig. 3 is a schematic diagram of the 2-2 section structure in Fig. 1;

Fig. 4 is a schematic diagram of the sectional structure of 3-3 in Fig. 1;

Fig. 5 is a schematic diagram of the sectional structure of 4-4 in Fig. 1;

Fig. 6 is a schematic diagram of the sectional structure of 5-5 in Fig. 1;

Fig. 7 is a schematic diagram of the sectional structure of 6-6 in Fig. 1;

Fig. 8 is a schematic diagram of the sectional structure of 7-7 in Fig. 1;

Fig. 9 is a schematic diagram of the 8--8 sectional structure in Fig. 1;

Fig. 10 is the structural representation of short limb shear wall;

Fig. 11 is a schematic diagram of the connection structure of the combined countersunk head broken bridge long self-tapping screw connector in the wall;

Fig. 12 is a schematic diagram of the sectional structure of 1-1 in Fig. 11;

Fig. 13 is a schematic diagram of the connection structure of the horizontal countersunk head broken bridge long self-tapping screw connector in the wall;

Fig. 14 is a schematic diagram of the sectional structure of 2-2 in Fig. 13;

Fig. 15 is a schematic diagram of the connection and arrangement of the horizontal abdominal wires of the steel wire grid and the oblique abdominal wires of the steel wire grid in the wall;

Fig. 16 is a schematic diagram of the sectional structure of 3-3 in Fig. 15;

Fig. 17 is a schematic diagram of the connection structure of the upper and lower walls;

Fig. 18 is another view of the connecting structure of the upper and lower walls;

Fig. 19 is a schematic structural view of the splicing connection of the left and right walls;

Fig. 20 is a schematic diagram of the connection between the composite infill wall and the composite thermal insulation layer of the short-limb shear wall;

Fig. 21 is a schematic structural view of the upper and lower prefabricated connecting beam composite walls of the window opening;

Fig. 22 is another view of the structure of the upper and lower prefabricated connecting beam composite walls in the window opening;

Fig. 23 is a schematic diagram of the connection structure between the composite filling wall and the upper and lower connecting beams;

In the figure: 1. Short limb shear wall; 2. Distribution reinforcement of short limb shear wall; 3. Vertical connection reinforcement of short limb shear wall; 4. Grouting sleeve; 5. Upper connecting beam; 6. Lower connecting beam; , polystyrene insulation board; 15, perlite board; 16, outer leaf mortar layer; 17, outer leaf steel wire mesh; 18, window frame mortar strip; 19, mortar strip steel mesh; Leaf reinforcement mesh; 27. Compound wall self-tapping nail cluster connection node; 28. Horizontal countersunk head broken bridge long self-tapping nail connector; 29. Combined countersunk head broken bridge long self-tapping nail connector; 30. Steel wire grid horizontal abdominal wire; 31. Steel wire grid oblique abdominal wire; 37. Concrete post-pouring strips.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

The main structure of the wall includes:

Light steel frame steel wire grid mortar surface layer-perlite-polystyrene thermal insulation assembled short-limb shear wall is mainly composed of steel mesh mortar-perlite surface layer structure, load-bearing steel wire grid, light steel composite truss and assembled short-limb concrete shear wall. Steel mesh mortar-perlite surface layer is a 25mm thick steel mesh mortar layer and perlite fireproof layer, which has good earthquake resistance, fire resistance, heat insulation, waterproof and weather resistance. The load-bearing steel wire mesh frame is composed of outer steel wire mesh, inner steel wire mesh with spot welding spacing of 200*200mm, horizontal abdominal wires with a diameter of 2mm and oblique upward 45-degree abdominal wires. The horizontal abdominal wires and oblique upward 45-degree abdominal wires penetrate the 25mm thick perlite layer. The light steel composite truss is a truss composed of a steel wire mesh mortar layer, a broken bridge self-tapping screw web, and a light steel frame chord. The light steel composite truss is composed of a 25mm thick steel wire mesh mortar layer strip outer chord, a light steel frame vertical C-shaped steel inner chord, a countersunk broken bridge with a diameter of not less than 5mm long self-tapping screw horizontal web and a 45-degree upward web; the light steel composite truss can effectively control the shear deformation caused by the self-weight of the mortar surface layer. pass on.

The perlite-polystyrene thermal insulation composite wall section sandwiched by the inner and outer leaves of the light steel frame steel wire grid frame is a semi-embedded polystyrene sandwich composite wall panel. The structure from outdoor to indoor is 25mm steel mesh mortar layer outer leaf, 25mm perlite board, 420mm polystyrene insulation layer and 50mm reinforced mesh concrete mortar inner leaf. There is a 150mm post-applied mortar strip between the outer leaves of the steel mesh mortar and the two adjacent steel mesh mortar layers of the adjacent short-leg shear wall, and the steel mesh in the post-applied mortar strip area overlaps. The inner leaf of the reinforced mesh concrete mortar is connected with the upper and lower connecting beams and the left and right composite shear walls through the self-tapping screw cluster connection structure.

The prefabricated shear wall composite connection structure refers to the assembly of upper and lower concrete short-leg shear wall panels and connecting beams with steel sleeves, and the assembly of short-leg shear walls and connecting beams with post-cast concrete strips; the upper, lower, left, and right light steel composite trusses support the connection between the steel wire grid mortar-perlite-polystyrene insulation system, the perlite layers are docked, the polystyrene layers are tongue-and-groove connected, and a 150mm post-plaster strip is left between adjacent two steel mesh mortar layers. Lap joint of steel wire mesh in the strip area; connection structure of compound thermal insulation structure of window and opening with connecting beam and short-leg shear wall self-tapping screw cluster connection structure, and self-tapping screw connection structure of composite filling wall and short-leg shear wall and connecting beam.

The specific connection structure of each structure is as follows:

Prefabricated concrete short-limb shear wall: the short-limb shear wall 1 and the short-limb shear wall distribution reinforcement 2, the short-limb shear wall vertical connection reinforcement 3 are bound by tie bars to form a shear wall reinforcement cage, the lower part of the short-limb shear wall vertical connection reinforcement 3 is connected to the grouting sleeve 4, and the connection length of the short-limb shear wall vertical connection reinforcement 3 protruding from the top of the wall is connected to the prefabricated concrete floor and the grouting sleeve 4 on the upper floor. The light steel grid is arranged on the outside of the distribution reinforcement 2 of the short-limb shear wall. After pouring concrete, a prefabricated grouting sleeve concrete short-limb shear wall with a light steel frame grid is formed.

Coupling beam: The upper coupling beam 5 located on the upper side of the window opening and the lower coupling beam 6 on the lower side of the window opening are formed by pouring concrete from the coupling beam reinforcement cage 7 bound inside and the coupling beam vertical connection reinforcement 8 inside the reinforcement cage.

Light steel sash: It is welded by the vertical keel 9 of the light steel sash and the horizontal keel 10 of the light steel sash. The web of the light steel sash has self-tapping nail holes for the light steel sash, and the flange has grooves for the flange of the light steel sash.

Inner leaf steel wire mesh mortar layer: composed of inner leaf steel wire mesh 12 pouring inner leaf mortar layer 11, U-shaped steel wire 13 flange and inner leaf steel wire mesh 12 are spot welded, and web bars are welded to light steel frame.

Steel wire grid mortar-perlite-polystyrene insulation structure: It is composed of polystyrene insulation board 14 with polystyrene insulation board dovetail groove, perlite board 15, outer leaf mortar layer 16 and outer leaf steel wire mesh 17. The steel mesh mortar surface layer is composed of polystyrene insulation board dovetail groove and inner leaf mortar connection layer. Wire grid connection.

Load-bearing steel wire frame: it is composed of outer leaf steel wire mesh 17, inner leaf steel wire mesh 12 spot-welded steel wire mesh frame horizontal belly wire 30 and steel wire mesh frame oblique belly wire 31. In this way, the connection between the steel wire grid mortar-perlite-polystyrene insulation structure and the concrete shear wall is realized.

Light steel composite truss: It is a truss composed of the outer mortar surface layer of the steel wire mesh frame composed of the outer leaf mortar layer 16 and the outer leaf steel wire mesh 17, the long self-tapping screw connector 28 of the horizontal countersunk broken bridge, and the long self-tapping nail connector 29 of the combined countersunk broken bridge. The light steel composite truss is composed of the outer chord of the steel mesh mortar layer strip composed of the outer leaf mortar layer 16 and the outer leaf steel wire mesh 17, the vertical keel of the light steel frame 9 and the inner chord of the horizontal keel of the light steel frame 10, the horizontal countersunk head broken bridge long self-tapping nail connector 28 webs and the combined countersunk head broken bridge long self-tapping nail connector 29 chords; 9 and 10 with light steel sash transverse keels.

The perlite-polystyrene thermal insulation composite wall is composed of the outer leaf steel wire mesh mortar surface layer composed of the composite wall mortar outer leaf 21 and the composite wall outer leaf steel wire mesh 22, the inner leaf steel mesh mortar layer composed of the composite wall concrete mortar inner leaf 25 and the concrete mortar inner leaf steel mesh 26, and the composite wall perlite board 23 and the composite wall polystyrene insulation board 24 in the interlayer. 0 and the oblique abdominal wire 31 of the steel wire mesh frame, after one end is welded with the steel wire mesh 22 of the outer leaf of the composite wall, it passes through the perlite board and the polystyrene insulation board in turn, and the other end is welded with the steel mesh 26 of the inner leaf of the concrete mortar to effectively tie the layers of the composite wall.

Window hole self-tapping nail block connection structure: Window frame mortar strip 18 has built-in mortar strip steel mesh 19, mortar strip steel mesh 19 is overlapped with inner leaf steel mesh 12 and outer leaf steel mesh 17, the force transmission steel plate is welded on the mortar strip steel mesh 19 to connect with the C-shaped steel of the window frame light steel frame, and self-tapping nails are used to pass through the connecting steel plate and self-tapping to connect the mortar strip force transmission steel plate and the window frame light steel frame. Finally, smooth the grooves of the mortar strips with mortar.

Combined connection structure: including the connection structure of upper and lower short limb shear wall distribution steel bars 2 and grouting sleeve 4 internal injection grouting material 36; shear wall connection structure composed of short limb shear wall and coupling beam concrete post-pouring strip 37; polystyrene insulation board tongue and groove 34 smeared with cement-based mortar 33 The insulation layer connection structure; the connection structure of the steel wire mesh cement mortar layer of the outer leaf of the shear wall connected with the outer leaf steel mesh mortar layer of the upper, lower, left and right wall panels; the composite wall It is constructed with the steel wire mesh cement mortar layer of the outer leaf of the shear wall and the back plastering strip 32; and the inner leaf of the reinforced mesh concrete mortar of the composite filling wall and the composite wall self-tapping nail cluster connection node 27 of the upper and lower connecting beams.

Short-leg shear wall 1 is a prefabricated reinforced concrete L-shaped short-leg shear wall with a wall thickness of 250 mm, a single leg width of 1250 mm, and an aspect ratio of H/B=8. The distribution reinforcement 2 of the short limb shear wall adopts double-row reinforcement: the diameter of the horizontal distribution reinforcement is Φ10mm, the spacing is 200mm, the diameter of the vertical distribution reinforcement is Φ10mm, the spacing is 200mm, the net protective layer thickness is 20mm, and the Φ6mm tie reinforcement is arranged at an interval of 400mm; the grouting sleeve 4 is used for assembly and connection, and the symmetrically arranged Φ16 reinforcement is used as the vertical connection reinforcement 3 of the short limb shear wall of the upper and lower short limb shear walls. The top protruding wall panel 240mm of the vertical connecting steel bar 3 of the short limb shear wall is connected with the floor slab and the upper wall panel. The horizontally distributed reinforcing bars of the short-leg shear walls protrude from the end of the wall panel by 280 mm to overlap the longitudinal reinforcing bars of the adjacent connecting beams, and then pour concrete and then pour strips 37 .

The upper connecting beam 5 and the lower connecting beam 6 are the connecting structures between the two wall limbs, and are respectively located at the upper and lower parts of the window opening. The section height of the upper connecting beam 5 is the distance from the upper edge of the window opening to the concrete top of the wall panel. The height of the lower connecting beam 6 is 450 mm, and the section width is equal to the thickness of the wall. Φ10 longitudinal steel bars and Φ8 stirrups are arranged inside the connecting beam. The longitudinal reinforcement and the stirrup form the connecting beam reinforcement cage 7. The connecting beam vertical connection reinforcement 8 of Φ 16 is configured between the connection beam longitudinal bars, and the vertical connection reinforcement upper end in the upper connection beam 5 of the lower wallboard is connected with the grouting sleeve 5 at the bottom of the lower connection beam 6 vertical connection reinforcement of the upper wallboard. The upper and lower connecting beams are equipped with light steel grids.

The vertical keel 9 of the light steel sash and the horizontal keel 10 of the light steel sash are welded by C-shaped steel with a vertical and horizontal spacing of no more than 800. The light steel sash is spot-welded with U-shaped steel wire 13 with a diameter of 2mm at a distance of 10mm from the inner leaf steel wire mesh 12 to connect the steel mesh and the light steel sash respectively. The distance between the horizontal and vertical spot welding is not more than 200mm; mm, the light steel frame grid is 140mm wide and 60mm high light steel frame flange grooves, thus forming a protruding steel section with a net distance of 140mm, a height of 60mm, and a width of 60mm; the steel section of the vertical keel 9 of the light steel grid is anchored into the short limb shear wall 1 and the coupling beam at a position 10mm away from the horizontal and vertical reinforcement of the shear wall and the connecting beam. After the shear wall concrete is poured, the 10mm high section of the light steel frame with protruding steel section is embedded in the shear wall concrete for 10mm, and the protruding steel section is anchored in the shear wall concrete for 60mm. For the convenience of self-tapping nails to connect the web of the light steel sash keel, a round hole smaller than the diameter of the self-tapping screw is opened on the web of the vertical keel 9 of the light steel sash and the transverse keel 10 of the light steel sash, so that the self-tapping screw passes through.

The inner leaf mortar layer 11 and the inner leaf steel wire mesh 12 are the mortar layer between the polystyrene insulation board dovetail groove and the short limb shear wall 1, the upper connecting beam 5 and the lower connecting beam 6. The net distance between the inner leaf steel wire mesh 12 and the polystyrene insulation board with dovetail groove 14 is 10mm, and the 14mm thick mortar with a strength not lower than C20 is used to smooth the gap between the inner leaf steel wire mesh 12 and the polystyrene insulation board dovetail groove; the U-shaped steel wire 13 is the inner leaf steel The wire mesh 12 is connected with the light steel sash grid, its bent flange is spot-welded with the steel wire of the inner leaf steel wire mesh 12, and the web bar is welded with the vertical keel 9 of the light steel sash grid and the transverse keel 10 of the light steel sash grid.

The polystyrene insulation board 14 is a polystyrene insulation board with a dovetail groove at the junction with the inner leaf mortar layer 11 .

The perlite board 16 is the fireproof layer of the wall board, and its thickness is 25mm.

The outer leaf mortar layer 16 is a 25mm thick mortar layer whose outer strength of the wallboard is not lower than C20. The outer leaf mortar layer 16 has a built-in outer leaf steel wire mesh 17 with a diameter of 2mm and a spacing of 50mm. The net mortar protective layer of the steel mesh is 10mm.

The window frame mortar strip 18 is a window frame edge-sealing concrete mortar strip connecting the inner leaf mortar layer 11 and the outer leaf mortar layer 16. Its thickness is 50mm, and the mortar strip steel mesh 19 with a diameter of 4mm and a spacing of 200mm is arranged inside. Use self-tapping nails to pass through the connecting steel plate with bolt holes, self-tapping drill into the force-transmitting steel plate welded on the mortar strip reinforcement net and the light steel frame at the window frame, and use high-performance mortar to fill the groove of the window frame mortar strip at the force-transmitting steel plate of the mortar strip to form a self-tapping nail cluster node 20 at the window opening.

The composite wall mortar outer leaf 21 is a 25mm thick mortar layer with a strength of no less than C20 on the outside of the composite filling wallboard. The composite wall mortar outer leaf 21 has a built-in composite wall outer leaf steel wire mesh 22 with a diameter of 2mm and a spacing of 50mm. The net mortar protective layer of the steel mesh is 10mm.

The composite wall perlite board 23 and the composite wall polystyrene insulation board 24 are respectively the fireproof layer and the insulation layer of the composite filled wall.

The concrete mortar inner leaf 25 of the compound wall is equipped with a concrete mortar inner leaf steel mesh 26 with a diameter of 4 mm and a spacing of 200 mm. The surface of the inner leaf 25 of the concrete mortar of the compound wall is flush with the inner surface of the short-limb shear wall and the coupling beam.

The composite wall self-tapping nail aggregate connection node 27 is a connection node structure between the inner leaf of the composite wall concrete mortar and the short-limb shear wall and the coupling beam. The left and right ends of the inner side of the reinforced mesh concrete mortar of the compound wall are connected with the short-limb shear wall, and the force-transmitting steel plate welded on the horizontally distributed reinforcement of the short-limb shear wall and the force-transmitting steel plate welded on the steel mesh 26 of the inner leaf of the concrete mortar pass through the connecting steel plate with openings, and are connected by self-tapping nails. The upper and lower ends of the inner side of the composite wall reinforced mesh concrete mortar are connected with the connecting beam, self-tapping nails pass through the connecting steel plate with self-tapping nail holes, and self-tapping connects the force-transmitting steel plate welded on the inner leaf steel mesh of the composite wall and the force-transmitting steel plate welded on the stirrup of the connecting beam, thus forming a self-tapping nail cluster connection node.

The long self-tapping screw connector 28 of the horizontal countersunk broken bridge and the long self-tapping screw connector 29 of the combined countersunk broken bridge are the webs of the light steel composite truss. The connecting piece is sunk into the countersunk head fiber composite connecting piece with a size not less than 50, the perlite-polystyrene insulation layer is drilled, and the light steel frame is connected by self-tapping. The countersunk head fiber composite connector is a thick 3*60*60 outer square plate, a setback 4*46*46 square plate, a central hollow round rod with an outer diameter of 14mm and an inner diameter of 10mm and a length of 50mm, and a central hollow round rod with an outer diameter of 14mm and an inner diameter of 6mm and a length of 20mm. The angle between the square plate and the hollow round bar of the countersunk head fiber composite connector of the horizontal countersunk broken bridge long self-tapping screw connector 28 is 90 degrees, and the combined countersunk head broken bridge long self-tapping screw connector 29 The angle of the countersunk head fiber composite connector's rectangular plate and the hollow round rod is divided into two types: 90 degrees through the horizontal long self-tapping screw and 45 degrees through the oblique upward long self-tapping screw; Arrange horizontal countersunk head broken bridge long self-tapping screw connectors 28 on the top and bottom of the vertical keel 9 of the light steel frame, and arrange the combined countersunk head broken bridge long self-tapping screw connector 29 in the middle. Horizontal countersunk broken bridge long self-tapping screw connectors 24 are arranged on the transverse keel 10 of the light steel frame grid, and the spacing is not more than 800mm.

The horizontal abdominal wire 30 of the steel wire frame and the oblique abdominal wire 31 of the steel wire frame are supporting steel wires for connecting the inner leaf steel wire mesh 12 and the outer leaf steel wire mesh 17. The steel wire mesh frame is composed of the inner leaf steel wire mesh 12, the outer leaf steel mesh 17, the horizontal abdominal wire 30 of the steel wire mesh frame with a diameter of 2mm at a spot welding distance of 200mm, and the oblique abdominal wire 31 of the steel wire mesh frame inclined upward at 45 degrees. In the composite filling wall, one end of the horizontal abdominal wire 30 of the steel wire grid frame and the oblique abdominal wire 31 of the steel wire grid frame is welded with the steel wire mesh 22 of the outer leaf of the composite wall, penetrates the perlite board 23 of the composite wall and the polystyrene insulation board 24 of the composite wall, and welds the other end with the steel mesh 26 of the inner leaf of the concrete mortar, and is anchored in the inner leaf 25 of the concrete mortar of the composite wall.

Wipe strip 32 behind the steel wire mesh cement mortar layer of the outer leaf, which is the connection structure of the upper, lower, left and right outer steel wire mesh mortar layers of the outer insulation layer of the short limb shear wall panel, and also the connection structure of the outer leaf of the steel wire mesh mortar of the composite filling wall and the outer insulation layer of the short limb shear wall panel. The outer leaf of the steel mesh mortar layer is reserved with a 75mm wide outer mortar surface layer and then wiped with a strip. After the wall panels are connected, the connection position of the outer steel mesh mortar layer is 150mm wide and then a mortar layer is applied. The built-in 150 wide, 50mm spacing, and 2mm diameter reinforced steel mesh, and high-performance thermal insulation mortar is applied in the strips.

The cement-based mortar 33 is an inorganic bonding material applied at the grooves and grooves of the polystyrene insulation board, which can enhance the integrity and waterproof performance of the adjacent wallboard polystyrene insulation board.

The shear wall mortar cushion 35 is a 20mm thick mortar cushion between the floor slab and the short limb shear wall thereon.

The grouting material 36 is a high-performance cement-based bonding material in the grouting sleeve 4 .

Concrete post-pouring strip 37 is an assembly and connection structure between the short-leg shear wall and the coupling beam. The horizontally distributed steel bars of the short-leg shear wall protrude from the left and right ends of the wall panel by 280mm to overlap with the longitudinal reinforcement of the adjacent coupling beam and bind the vertical structural reinforcement and tie reinforcement. After that, the post-cast concrete strip 37 is poured to complete the assembly and connection of the left and right wall panels.

When making the wall, firstly, according to the building structure design, determine the layout position and specific size of the light steel composite truss supporting the steel wire mesh frame mortar-perlite-polystyrene insulation short-limb shear wall and the connecting beam, determine the thickness and reinforcement of the shear wall and connecting beam, determine the thickness of the insulation layer according to the building's regional climate conditions, determine the thickness of the outer steel mesh mortar surface layer and perlite board according to the building's fire protection, waterproof and weather resistance requirements, and determine the thickness of the inner mortar surface layer according to the force requirements of the external insulation system. Design the steel wire mesh frame and light steel composite truss according to the force requirements; determine the size and thickness of the self-tapping screw cluster node steel plate, and the arrangement and quantity of self-tapping screws. Determine the relevant design parameters of the composite infill wall, design and check the force calculation of the joint structure of the short-leg shear wall and the composite infill wall; draw detailed structural drawings according to the design plan, and carry out prefabricated wall panel production, transportation and on-site assembly construction.

The method of the short-leg shear wall assembled light steel composite truss supporting the steel wire grid mortar-perlite-polystyrene composite enclosure wall includes the following steps:

The first step, the factory processes and welds the vertical and horizontal C-shaped steel of the light steel frame, binds the short-leg shear wall reinforcement cage and the connecting beam reinforcement cage, installs the grouting sleeve, purchases the polystyrene insulation board and the perlite board, cuts and assembles them into the required size; prepares the internal and external steel wire mesh, the steel wire mesh frame belly wire, and the window frame mortar strip steel mesh welded with the force-transmitting steel plate, prefabricated horizontal countersunk broken bridge long self-tapping nail connectors and combined countersunk head broken bridge long self-tapping nail connectors;

The second step is to install and position the light steel frame on the steel cage of the short-leg shear wall, connect the inner steel wire mesh to the light steel frame through U-shaped steel wires, and use engineering plastics and other pads to set the thickness of the mortar layer in the distance between the light steel frame and the dovetail groove surface of the polystyrene insulation board and position the polystyrene insulation board, perlite board and outer steel wire mesh; bind the window frame mortar strip steel mesh with the inner and outer leaf steel mesh;

The third step is to penetrate the perlite board and polystyrene insulation board in turn through the horizontal web wire and the oblique web wire of the steel wire grid frame, and spot weld the two ends of the web frame web wire with the inner and outer steel wire mesh to form a wire grid frame, and extend into the shear wall and the interior of the connecting beam for a certain anchorage distance; the horizontal broken bridge self-tapping screw connector and the combined broken bridge self-tapping screw connector long self-tapping in turn penetrate the perlite board and the polystyrene insulation board, self-tapping connects the light steel frame, and extends into the shear wall and the connecting beam. A certain anchoring distance;

The fourth step is to pour the inner and outer wire mesh mortar surfaces and the window frame mortar strips with grooves, and maintain them. The mortar strips of the window frame are connected with the connecting beams of the window openings through self-tapping nail clusters and joints;

The fifth step is to pour the shear wall concrete with the steel wire grid mortar-perlite-polystyrene insulation structure as the base form, and maintain it;

The sixth step is to process the steel wire mesh of the outer leaf of the composite wall, the perlite board of the composite wall, the polystyrene insulation board of the composite wall and the steel mesh of the inner leaf of the concrete mortar; weld the horizontal and oblique abdominal wire ends of the steel wire frame to the steel wire mesh of the outer leaf of the composite wall, and pass through the perlite board, the polystyrene insulation board and the steel mesh of the inner leaf in turn; Weld the force-transmitting steel plate on the steel mesh of the inner leaf of the concrete mortar;

The seventh step is to pour the outer leaf of the compound wall mortar and the inner leaf of the compound wall concrete mortar in the factory. The outer leaf of the compound wall mortar is reserved and then plastered with mortar strips, and the inner leaf of the compound wall concrete mortar is reserved on the outer side of the force-transmitting steel plate welded to the steel mesh;

The eighth step is to maintain and support the steel wire grid mortar-perlite-polystyrene thermal insulation composite filling wall, and transport it to the construction site;

The ninth step is to overlap the short-leg shear wall with the adjacent horizontal steel bars of the connecting beam, bind the vertical structural steel bars and tie steel bars, and pour the vertical concrete back between the short-leg shear wall and the adjacent connecting beam with the inner support formwork, and the outer polystyrene insulation board doubles as a formwork;

The tenth step is to lay a mortar cushion on the lower floor; connect the short-leg shear wall of the lower floor and the longitudinal steel bars at the top of the connecting beam with the grouting sleeve at the bottom of the upper shear wall and the connecting beam, and connect the groove and groove of the polystyrene insulation board of the upper and lower wall panels and the post-applied mortar strips. Concrete is poured in the vertical post-pouring strips of adjacent walls and connecting beams, additional steel wire mesh is bound in the vertical reserved strips, and the vertical mortar strips between the left and right wall panels are smoothed with high-performance thermal insulation mortar;

The eleventh step is to connect the composite filling wall with the upper and lower connecting beams and the left and right short-leg shear walls through the self-tapping screw block connection structure of the inner leaf reinforced mesh concrete mortar surface layer; wrap the reinforced steel mesh in the strip after the outer leaf of the steel mesh mortar of the composite filling wall and the outer leaf of the steel mesh mortar of the short limb shear wall, and smooth it with high-performance thermal insulation mortar;

The twelfth step, remove the formwork, paint the shear wall with waterproof paint and fill the mortar surface of the outer leaf of the wall, and use the interior wall paint to paint the inner surface of the short limb shear wall and the inner leaf of the composite filled wall reinforced mesh mortar.

The above is only a preferred specific embodiment of the utility model, but the scope of protection of the utility model is not limited thereto. Anyone familiar with the technical field within the technical scope disclosed in the utility model, according to the technical scheme of the utility model and its utility model concept to make equivalent replacements or changes, should be covered within the scope of protection of the utility model.

Claims (10)

1. The short-leg assembled light steel combined steel wire grid mortar-perlite-polystyrene enclosure wall is characterized in that it includes: The prefabricated concrete short-leg shear wall consists of short-limb shear walls and short-limb shear wall distribution steel bars, and the vertical connecting steel bars of the short-limb shear wall are bound by tie bars to form a shear wall reinforcement cage. The lower part of the vertical connecting steel bars of the short-limb shear wall is connected with a grouting sleeve, and the part of the vertical connecting steel bar of the short-limb shear wall protruding from the top of the wall panel is connected with the prefabricated concrete floor and the grouting sleeve of the upper layer; Coupling beams, including upper coupling beams and lower coupling beams, the upper coupling beams on the upper side of the window opening and the lower coupling beams on the lower side of the window opening are formed by pouring concrete with the coupling beam reinforcement cage bound inside and the vertical connection reinforcement of the coupling beams inside the reinforcement cage; The light steel frame is arranged on the outside of the distribution reinforcement of the short-leg shear wall. It is welded by the vertical keel of the light steel frame and the transverse keel of the light steel frame. The inner leaf steel wire mesh mortar layer is composed of the inner leaf steel wire mesh poured inner leaf mortar layer, the flange of the U-shaped steel wire is spot welded to the inner leaf steel mesh, and the web bar is welded to the light steel frame; The steel wire grid mortar-perlite-polystyrene insulation structure is composed of polystyrene insulation board with polystyrene insulation board dovetail groove, perlite board, outer leaf mortar layer and outer leaf steel wire mesh. The polystyrene insulation board dovetail groove is mechanically occluded with the inner leaf mortar connection layer. The steel wire grid mortar-perlite-polyphenyl insulation structure is connected with the prefabricated concrete short-leg shear wall and the upper and lower connecting beams through light steel composite trusses and load-bearing steel wire grids; The load-bearing steel wire mesh frame is composed of the outer leaf steel wire mesh, the inner leaf steel mesh spot-welded steel wire mesh frame horizontal belly wire and the steel wire mesh frame oblique belly wire. The steel wire mesh frame horizontal belly wire and the steel wire mesh frame oblique belly wire penetrate the perlite board and the polystyrene insulation board and then extend into the shear wall concrete; The light steel composite truss is composed of a light steel composite truss consisting of an outer leaf mortar layer and an outer leaf steel wire mesh, a steel mesh mortar layer with an outer chord, a vertical keel of a light steel frame, and an inner chord of a horizontal keel of a light steel frame, the web of the long self-tapping nail connector of the horizontal countersunk broken bridge, and the chord of the long self-tapping nail connector of the combined countersunk broken bridge; transverse keel; The inner and outer leaf mortar surface layer of the light steel frame steel wire mesh frame sandwiches perlite-polystyrene thermal insulation composite wall, the outer leaf steel mesh mortar surface layer consists of the outer leaf of the composite wall mortar and the steel wire mesh of the outer leaf of the composite wall, the inner leaf steel mesh mortar layer composed of the inner leaf of the composite wall concrete mortar and the steel mesh of the inner leaf of the concrete mortar, and the perlite board of the composite wall and the polystyrene insulation board of the composite wall in the interlayer. After being welded with the steel wire mesh of the outer leaf of the composite wall, it passes through the perlite board and the polystyrene insulation board in turn, and the other end is welded with the steel mesh of the inner leaf of the concrete mortar to effectively tie the layers of the composite wall; The steel wire mesh cement mortar layer of the outer leaf is wiped with a strip, which is the connection structure of the upper, lower, left and right outer steel mesh mortar layers of the outer insulation layer of the short-limb shear wall panel. It is also the connection structure of the outer leaf of the steel mesh mortar of the composite filling wall and the outer insulation layer of the short-limb shear wall panel; insulation mortar; Window hole self-tapping nail block connection structure, the mortar strip of the window frame has a built-in mortar strip steel mesh, the mortar strip steel mesh is overlapped with the inner leaf steel wire mesh and the outer leaf steel mesh, the force transmission steel plate is welded on the mortar strip steel mesh and the light steel frame C-shaped steel of the window frame is docked, and the self-tapping nail is passed through the connecting steel plate to self-tapping to connect the mortar strip force transmission steel plate and the window frame light steel frame grid, and the mortar strip groove is smoothed; Combined connection structure, including the connection structure of upper and lower short limb shear wall distribution steel bars and grouting sleeve inner injection grouting material; shear wall connection structure composed of short limb shear wall and coupling beam concrete post-cast strips; insulation layer connection structure composed of polystyrene insulation board tongue and groove smeared with cement-based mortar; connection structure of steel wire mesh mortar layer on the outer leaf of the shear wall connecting the outer leaf steel mesh mortar layer of the upper, lower, left and right wall panels; compound wall and steel mesh cement mortar on the outer leaf of the shear wall Strip construction after the layer; and the composite wall self-tapping nail cluster connection nodes of the reinforced mesh concrete mortar inner leaf of the composite filling wall and the upper and lower connecting beams; Concrete post-casting strips are the assembly and connection structure of short-leg shear walls and coupling beams. The horizontally distributed steel bars of the short-leg shear walls protrude from the left and right ends of the wall panels to overlap with the longitudinal bars of the adjacent coupling beams and bind the vertical structural bars and tie bars. After that, the post-cast concrete strips are poured to complete the assembly and connection of the left and right wall panels. 2. The short-limb assembled light steel combined steel wire grid mortar-perlite-polystyrene enclosure wall according to claim 1 is characterized in that, the short-limb shear wall is an assembled reinforced concrete L-shaped short-limb shear wall, the thickness of the wallboard is 250mm, and the width of a single limb is 1250mm; the distribution reinforcement of the short-limb shear wall adopts double-row reinforcement, and the horizontal distribution reinforcement diameter is 10mm with a spacing of 200mm, and the vertical distribution reinforcement is a diameter of 10mm with a spacing of 200mm. The thickness of the protective layer is 20mm, and the steel bars with a diameter of 6mm are arranged at an interval of 400mm; the grouting sleeve is used for assembly and connection, and the steel bars with a diameter of 16mm arranged symmetrically are used as the vertical connecting steel bars of the upper and lower short-leg shear walls; 3. The short-limb assembled light steel combined steel wire grid mortar-perlite-polystyrene enclosure wall according to claim 1 is characterized in that, the upper connecting beam and the lower connecting beam are the connection structure between the two wall limbs, and are respectively located at the upper and lower parts of the window opening, the section height of the upper connecting beam is the distance from the upper edge of the window opening to the concrete top of the wall panel, the height of the lower connecting beam is 450mm, and the section width is equal to the thickness of the wall; The vertical connecting beams are arranged between the bars, and the upper end of the vertical connecting steel bars in the upper connecting beams of the lower wall panel is connected with the grouting sleeve at the bottom of the vertical connecting steel bars of the lower connecting beams of the upper wall panel; the upper and lower connecting beams are equipped with light steel grids. 4. The short-leg assembled light steel combined steel wire grid mortar-perlite-polystyrene enclosure wall according to claim 1 is characterized in that the vertical keel of the light steel sash and the horizontal keel of the light steel sash are welded by C-shaped steel with a vertical and horizontal distance of no more than 800, and the light steel sash is spot-welded with U-shaped steel wires with a diameter of 2 mm at a distance of 10 mm from the inner leaf steel wire mesh to connect the steel wire mesh and the light steel sash, and the horizontal and vertical spot welding The distance between the keel C-shaped steel section is 70mm high, the width is 50mm, and the plate thickness is not less than 2mm. The light steel frame has a width of 140mm and a height of 60mm. The flange groove of the light steel frame forms a protruding steel section with a net distance of 140mm, a height of 60mm, and a width of 60mm. And the connecting beam; after the shear wall concrete is poured, the 10mm high section of the light steel frame with protruding steel section is embedded in the shear wall concrete 10mm, and the protruding steel section is anchored in the shear wall concrete by 60mm. 5. The short-leg assembled light steel combined steel wire frame mortar-perlite-polystyrene enclosure wall according to claim 1, characterized in that the inner leaf mortar layer and the inner leaf steel wire mesh are mortar layers between the dovetail groove of the polystyrene insulation board and the short limb shear wall, the upper connecting beam and the lower connecting beam, the net distance between the inner leaf steel wire mesh and the polystyrene insulation board with dovetail groove is 10mm, and the inner leaf is smoothed with a 14mm thick mortar with a strength not lower than C20. The gap between the steel wire mesh and the dovetail groove of the polystyrene insulation board; the U-shaped steel wire is the connection structure between the inner leaf steel mesh and the light steel frame, the bent flange is spot welded with the inner leaf steel wire mesh, and the web is welded to the vertical keel of the light steel frame and the horizontal keel of the light steel frame. 6. The short-leg assembled light steel combined steel wire grid mortar-perlite-polystyrene enclosure wall according to claim 1 is characterized in that, the described window frame mortar strip is a window frame edge-sealing concrete mortar strip connecting the inner leaf mortar layer and the outer leaf mortar layer, its thickness is 50mm, and the mortar strip steel mesh with a diameter of 4mm and a spacing of 200mm is arranged inside, and the mortar strip steel mesh is embedded in the inner leaf mortar connection layer and the outer leaf mortar layer 17100mm and The steel wire mesh of the inner leaf mortar layer and the outer leaf steel mesh are lapped and bound; self-tapping nails are used to pass through the connecting steel plate with bolt holes, self-tapping drilled into the force-transmitting steel plate welded on the mortar strip steel mesh and the light steel frame at the window frame, and high-performance mortar is used to fill up the groove of the window frame mortar strip at the force-transmitting steel plate of the mortar strip to form a self-tapping nail cluster node at the window opening. 7. The short limb assembled light steel combined steel wire grid mortar-perlite-polystyrene enclosure wall according to claim 1, characterized in that, the outer leaf of the composite wall mortar is a 25mm thick mortar layer with a strength of no less than C20 on the outside of the composite filled wallboard, the outer leaf of the composite wall mortar has a built-in steel wire mesh with a diameter of 2mm and a distance of 50mm, and the net mortar protective layer of the steel mesh is 10mm; The fire-proof layer and insulation layer of the filled wall; the concrete mortar inner leaf of the composite wall is equipped with a concrete mortar inner leaf steel mesh with a diameter of 4mm and a spacing of 200mm, and the surface of the inner leaf of the composite wall concrete mortar is flush with the inner surface of the short-limb shear wall and the connecting beam. 8. The short-leg assembled light steel combined steel wire frame mortar-perlite-polystyrene enclosure wall according to claim 1 is characterized in that, the self-tapping nail aggregate block connection node of the composite wall is a joint structure between the inner leaf of the composite wall concrete mortar and the short-limb shear wall and the connecting beam; the left and right ends of the inner side of the composite wall reinforced concrete mortar are connected with the short-limb shear wall, and the force-transmitting steel plates welded on the horizontally distributed reinforcing bars of the short-limb shear wall and the force-transmitting steel plates welded on the inner leaf reinforcement net of the concrete mortar pass through The connecting steel plates with openings are connected by self-tapping nails; the upper and lower ends of the inner side of the composite wall reinforced mesh concrete mortar are connected with the connecting beams, and the self-tapping screws pass through the connecting steel plates with self-tapping nail holes, and self-tapping connects the force-transmitting steel plates welded on the inner leaf steel mesh of the composite wall and the force-transmitting steel plates welded on the stirrups of the connecting beams, thereby forming a self-tapping nail cluster connection node. 9. The short-leg assembled light steel combined steel wire grid mortar-perlite-polystyrene enclosure wall according to claim 1, characterized in that the long self-tapping screw connectors of the horizontal countersunk broken bridge and the combined long self-tapping screw connector of the broken bridge are the webs of the light steel composite truss. 10. The short-limb assembled light steel combined steel wire grid mortar-perlite-polystyrene enclosure wall according to claim 1, characterized in that, the horizontal abdominal wire of the steel wire grid and the oblique abdominal wire of the steel wire grid are the supporting steel wires connecting the inner leaf steel wire mesh and the outer leaf steel wire mesh; The net frame is formed obliquely to the abdominal wire, and the abdominal wire penetrates the perlite board and the inner leaf mortar layer bonded with the polystyrene insulation board with dovetail grooves, and then extends into the short limb shear force horizontal projection of 60mm.