Fabricated light steel composite truss supported steel wire mesh frame mortar-pearlite-polyphenyl composite shear wall and method

Abstract

The application discloses an assembled light steel combined truss bearing steel wire mesh frame mortar-pearlite-polyphenyl composite shear wall and a method, and relates to the technical field of assembled concrete building structure engineering. The steel wire mesh mortar-pearlite surface layer comprises a steel wire mesh mortar layer and a pearlite fireproof layer; the bearing steel wire mesh frame is composed of outer steel wire mesh, inner steel wire mesh spot-welded horizontal web wires and inclined web wires, and the horizontal web wires and the inclined web wires extend into the concrete of the shear wall; the light steel frame is formed by welding C-shaped steel, and U-shaped steel wires are respectively spot-welded to connect the steel wire mesh and the C-shaped steel; the light steel combined truss is a truss composed of the steel wire mesh mortar layer, broken bridge self-tapping nail web bars and frame light steel chord bars; the combined connection structure is that steel sleeve assembly is adopted between upper and lower shear wall plates, and post-poured concrete strips are adopted to assemble left and right shear walls. The application has the characteristics of thin thickness, light weight, good fire resistance and heat insulation performance and good stress performance.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of prefabricated concrete building structure engineering, more specifically, it relates to a prefabricated light steel composite truss supporting steel mesh frame mortar-pearlite-polyphenyl composite shear wall and a method. BACKGROUND

[0002] At present, prefabricated buildings are developing rapidly, and prefabricated concrete structures are widely used in multi-story and high-rise residential buildings, but the innovative development of super-low energy consumption prefabricated buildings and the matching energy-saving prefabricated components is lagging behind. The thermal performance of the envelope structure of super-low energy consumption and near-zero energy consumption buildings is not high, and the integration degree is low. Therefore, it is necessary to develop multifunctional integrated prefabricated shear wall exterior wall system for different climate regions in China, and to develop prefabricated frame system composite exterior wall integrated with decoration, fireproofing, waterproofing, thermal insulation, and weather resistance, which is a major and urgent need for the development of national prefabricated green buildings.

[0003] The bottleneck problems of the prior art are: 1. The traditional exterior wall exterior insulation 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 exterior wall exterior insulation have occurred frequently, and the accidents are mainly caused by the falling off of thermal insulation mortar and the falling off of inorganic light aggregate fireproofing and thermal insulation board; once the exterior wall exterior insulation layer is hollowed out and falls off, it will fall from a high altitude along with the external decorative surface layer, which is easy to cause injury to pedestrians or damage to objects; 2. The deformation of the super-thick insulation layer under long-term load is difficult to control, the use of traditional exterior insulation layer is limited by building height, the exterior wall exterior insulation is arranged along the building exterior wall, and the elastic modulus of the insulation board is low and the deformation is large, so the gravity load of the mortar insulation layer cannot be completely transmitted to the main structure of the layer, therefore, as the structure height increases, the gravity load accumulation effect will occur, which is not conducive to the overall stability of the exterior insulation layer, and the application height of the thin plaster exterior wall insulation system has been strictly limited in some domestic areas, and the use of ceramic facing bricks for the surface layer of the thin plaster exterior wall insulation system is prohibited to avoid the risk of falling off; 3. The traditional exterior insulation wall has poor fire resistance, most of the exterior insulation structures have no fire protection layer, and the organic insulation boards such as polystyrene, polyurethane and foamed rubber have poor fire resistance, which leads to many fire accidents of the exterior insulation system; 4. The exterior insulation structure and the base wall are connected by expansion plastic anchors and thermal plastic nails, the non-metallic connecting pieces have low tensile and shear strength and poor weather resistance, which cannot ensure the effective connection of the insulation structure and the wallboard; 5. The traditional exterior insulation board joint treatment is difficult, and the joint position leaks water seriously, which is easy to cause the insulation structure to loosen and fall off. SUMMARY

[0004] The technical problem to be solved by the present application is to provide an assembled light steel composite truss bearing steel wire mesh frame mortar-perlite-polyphenyl composite shear wall, which is suitable for the non-opening outer wall of an assembled concrete shear wall structure ultra-low energy consumption house.

[0005] To solve the above technical problems, the technical solution adopted by the present application is:

[0006] The assembled light steel composite truss bearing steel wire mesh frame mortar-perlite-polyphenyl composite shear wall comprises:

[0007] The assembled concrete shear wall is formed by pouring concrete after binding the shear wall distribution steel bars, shear wall longitudinal connecting steel bars and tie steel bars to form a shear wall steel cage, and the lower part of the shear wall longitudinal connecting steel bars is connected with a grouting sleeve.

[0008] The light steel frame is arranged outside the shear wall distribution steel bars and is welded by light steel frame vertical rods and light steel frame horizontal rods; the light steel frame vertical rods and the light steel frame horizontal rods are both thin-walled C-shaped steel, the light steel frame web is provided with light steel frame self-tapping screw holes, and the flange is provided with a light steel frame flange groove.

[0009] The inner steel wire mesh mortar layer is composed of an inner steel wire mesh pouring inner mortar layer.

[0010] The U-shaped steel wire is spot-welded with the inner steel wire mesh at the flange and is welded and connected with the light steel frame at the web.

[0011] The steel wire mesh frame mortar-perlite-polyphenyl insulation structure is composed of a polyphenyl insulation board with a polyphenyl insulation board dovetail groove, a perlite board and a steel wire mesh mortar surface layer, the steel wire mesh mortar surface layer comprises an outer mortar surface layer and an outer steel wire mesh, and the polyphenyl insulation board dovetail groove is mechanically engaged with the inner steel wire mesh mortar layer.

[0012] The light steel composite truss is composed of the outer chord of the steel wire mesh mortar layer strip composed of the outer mortar surface layer and the outer steel wire mesh, the inner chord of the light steel frame vertical rod, the web of the horizontal broken bridge self-tapping screw connecting piece and the chord of the combined broken bridge self-tapping screw connecting piece; the broken bridge self-tapping screw connecting piece is self-tapping connected with the light steel frame vertical rod and the light steel frame horizontal rod after penetrating the perlite board and the polyphenyl insulation board.

[0013] The load-bearing steel mesh frame is composed of the outer steel mesh, the inner steel mesh, the steel mesh frame horizontal web and the steel mesh frame oblique web, the steel mesh frame horizontal web and the steel mesh frame oblique web penetrate the perlite plate and the polystyrene insulation board and then extend into the concrete of the shear wall, the steel mesh frame mortar-perlite-polystyrene insulation structure is connected with the fabricated concrete shear wall through the light steel composite truss and the load-bearing steel mesh frame.

[0014] The combined connection structure includes a shear wall connection structure composed of shear wall distribution steel bars in upper and lower shear walls, grouting material in the grouting sleeve, a shear wall mortar cushion layer and a concrete post-cast strip on the left and right shear walls, an insulation layer connection structure composed of a polyphenyl insulation board rabbet and a cement-based mortar, and a connection structure of the outer steel mesh of the upper and lower wall plates and the left and right wall plates connected through the outer steel mesh cement mortar layer post-cast strip.

[0015] Preferably, the size of the concrete shear wall is 3900mm in width, 2700mm in height and 250mm in thickness, the shear wall distribution steel bars adopt double-row reinforcement, the horizontal distribution steel bars have a diameter of 10mm and a spacing of 200mm, the vertical distribution steel bars have a diameter of 10mm and a spacing of 200mm, the net protection layer has a thickness of 20mm, the tie steel bars with a diameter of 6mm are arranged at intervals of 400mm, the grouting sleeve assembly connection is adopted, 16 grouting sleeves are arranged at the bottom of the wall plate at intervals of 600mm, 16 steel bars with a diameter of 16mm are symmetrically arranged as shear wall longitudinal connection steel bars of the upper and lower shear walls, the vertical distribution steel bars in the shear wall distribution steel bars do not protrude the wall plate, the top of the shear wall longitudinal connection steel bars protrudes the wall plate by 240mm and is connected with the fabricated concrete floor and the upper wall plate, the fabricated concrete floor is a prefabricated concrete floor between the upper and lower fabricated shear walls and is connected with the concrete shear wall through the shear wall longitudinal connection steel bars, within a range of 300mm above the grouting sleeves at the bottom of the wall plate, the total encryption height is 500mm, the horizontal distribution steel bars with a diameter of 10mm and a spacing of 100mm are arranged to encrypt the shear wall distribution steel bars, and the horizontal distribution steel bars protrude the left and right ends of the wall plate by 280mm and are connected with the adjacent wall plate to post-cast the concrete post-cast strip.

[0016] Preferably, the light steel frame vertical rod and the light steel frame horizontal rod are welded by C-shaped steel with vertical and horizontal spacing not greater than 800, and the light steel frame is spot welded at a position with a net distance of 10 mm from the inner steel mesh by using U-shaped steel wire with a diameter of 2 mm to connect the steel mesh and the light steel frame, the light steel frame vertical rod is spot welded with the horizontal distribution steel wire of the inner steel mesh, the light steel frame horizontal rod is spot welded with the vertical distribution steel wire of the inner steel mesh, the horizontal and vertical spot welding spacing is not greater than 200 mm; the cross section of the light steel frame is 70 mm high and 50 mm wide, and the plate thickness is greater than or equal to 2 mm, a light steel frame flange groove with a width of 140 mm and a height of 60 mm is set on the light steel frame to form a convex steel section with a net distance of 140 mm, a height of 60 mm, and a width of 60 mm; the convex steel section on the light steel frame vertical rod is anchored into the concrete shear wall at a position with a net distance of 10 mm from the outer side distribution steel wire between the horizontal and vertical distribution steel of the shear wall, the net distance between the inner steel mesh 12 and the outer side distribution steel of the shear wall is 20 mm, and after pouring the shear wall concrete, the light steel frame with the convex steel section is embedded into the shear wall concrete by 10 mm, and the convex steel section is anchored in the shear wall concrete by 60 mm; a circular hole smaller than the diameter of the self-tapping screw is set on the C-shaped web of the light steel frame vertical rod and the light steel frame horizontal rod to facilitate the self-tapping screw to pass through.

[0017] Preferably, the inner mortar layer and the inner steel mesh are a polyphenyl insulation board dovetail groove and a mortar layer of a concrete shear wall, the net distance between the inner steel mesh and the polyphenyl insulation board with a dovetail groove is 10 mm, and a 14 mm thick mortar with a rough surface is used to smooth the gap between the inner steel mesh and the polyphenyl insulation board dovetail groove, and the strength is greater than or equal to C20; the U-shaped steel wire is a connecting structure of the inner steel mesh and the light steel frame, the bent flange is spot welded with the steel wire of the inner steel mesh, and the web is welded and connected with the light steel frame vertical rod and the light steel frame horizontal rod; the polyphenyl insulation board is a polyphenyl insulation board with a dovetail groove at the connection between the inner side and the inner mortar layer, and the thickness is 200 mm.

[0018] Preferably, the horizontal broken bridge self-tapping nail connector and the combined broken bridge self-tapping nail connector are the web members of a light steel composite truss, which are the connectors connecting the outer chords of 25mm thick steel mesh mortar layer strips and the inner chords of light steel frames; the countersunk head fiber composite connector with a sinking size of not less than 50mm drills through the perlite-polyphenyl insulation layer and the self-tapping connection light steel frame; the countersunk head fiber composite connector is a one-time formed connector with an outer square plate of 3mmX60mmX60, a square plate with a setback of 4mmX46mmX46mm, a hollow circular rod with an outer diameter of 14mm, an inner diameter of 10mm and a length of 50mm in the middle, and a hollow circular rod with an outer diameter of 14mm, an inner diameter of 6mm and a length of 20mm in the middle; the angle between the square plate and the hollow circular rod of the countersunk head fiber composite connector of the horizontal broken bridge self-tapping nail connector is 90 degrees, and the angle between the rectangular plate and the hollow circular rod of the countersunk head fiber composite connector of the combined broken bridge self-tapping nail connector 20 is divided into 90 degrees through the horizontal long self-tapping nail and 45 degrees through the oblique upward long self-tapping nail; the steel self-tapping nail has a nail cap diameter of 10mm, a nail rod of 6mm, and a length with threads; the horizontal broken bridge self-tapping nail connector is arranged at the top and bottom of the light steel frame vertical rod, and the combined broken bridge self-tapping nail connector is arranged in the middle; the horizontal broken bridge self-tapping nail connector is arranged on the light steel frame horizontal rod with a spacing of less than or equal to 800mm.

[0019] Preferably, the horizontal web wire of the steel mesh frame and the oblique web wire of the steel mesh frame are the supporting steel wires connecting the inner steel mesh and the outer steel mesh, the steel mesh frame is composed of the inner steel mesh, the outer steel mesh, the horizontal web wire of the steel mesh frame with a diameter of 2mm and a point welding interval of 200mm, and the oblique web wire of the steel mesh frame with an inclination of 45 degrees upward, the horizontal web wire of the steel mesh frame and the oblique web wire of the steel mesh frame penetrate the 25mm thick perlite plate and the 24mm thick inner mortar layer, and after bonding the 200 thick polyphenyl insulation plate with a dovetail groove, they extend into the horizontal projection of the concrete shear wall by 60mm.

[0020] Preferably, the outer steel mesh cement mortar layer back plaster strip is a connection structure of the upper and lower and left and right outer steel mesh mortar layers on the wallboard; a 75mm wide outer mortar surface back plaster strip is reserved at the upper, lower and left and right ends of the prefabricated wallboard, and after the wallboard is hoisted and positioned, the outer steel mesh mortar layer connection position of the adjacent wallboards is a 150mm wide outer mortar surface back plaster strip.

[0021] Preferably, the cement-based adhesive is an inorganic bonding material applied to the tongue-and-groove of the polyphenyl insulation board at the wallboard connection position, which can enhance the integrity and waterproof performance of the tongue-and-groove of the polyphenyl insulation board.

[0022] Preferably, the concrete post-cast strip is a left and right adjacent wallboard assembly connection structure, the horizontal distribution steel bar protrudes 280mm from the left and right ends of the wallboard and overlaps the adjacent wallboard to bind the vertical structural steel bar and the tie steel bar, and then the concrete post-cast strip is post-cast to complete the assembly connection of the left and right wallboards.

[0023] The method for supporting the steel wire mesh frame mortar-perlite-polyphenyl composite shear wall by the fabricated light steel combined truss includes the following contents.

[0024] First, the thermal insulation shear wall is prepared, and the steps are as follows:

[0025] Step 1: Process the light steel frame vertical rods and horizontal rods in the factory, weld the C-shaped steel and light steel frame after processing, bind the shear wall steel reinforcement cage, install the grouting sleeve, purchase the polyphenyl insulation board and perlite board, and cut and assemble them into the required size; prepare the inner and outer steel wire meshes, steel wire mesh frame webbing, and horizontal broken bridge self-tapping screw connectors and combined broken bridge self-tapping screw connectors;

[0026] Step 2: Install and position the light steel frame on the shear wall steel reinforcement cage, connect the inner steel wire mesh to the light steel frame through the U-shaped steel wire, and position the polyphenyl insulation board and perlite board through the engineering plastic cushion block to separate the thickness of the inner sand mortar layer between the light steel frame and the polyphenyl insulation board dovetail groove surface and the outer steel wire mesh;

[0027] Step 3: sequentially penetrate the perlite board and polyphenyl insulation board with the steel wire mesh frame horizontal webbing and steel wire mesh frame diagonal webbing, and form the steel wire mesh frame by spot welding the two ends of the steel wire mesh frame webbing to the inner and outer steel wire meshes, and extend into the shear wall interior to a certain anchoring distance; sequentially penetrate the perlite board and polyphenyl insulation board with the horizontal broken bridge self-tapping screw connector and the combined broken bridge self-tapping screw connector long self-tapping screw, and self-tapping connect the light steel frame, and extend into the shear wall interior to a certain anchoring distance;

[0028] Step 4: Pour the inner and outer steel wire mesh mortar surface layer and maintain;

[0029] Step 5: Pour the shear wall concrete with the steel wire mesh mortar-perlite-polyphenyl insulation structure as the bottom mold, and maintain;

[0030] Then the prepared shear wall is assembled and constructed, and the steps are as follows:

[0031] Step 6: Install the fabricated concrete floor to the upper part of the lower concrete shear wall and lay the mortar cushion layer; overlap the left and right fabricated shear walls horizontally, bind the vertical structural steel bars and tie steel bars, and set the formwork inside the left and right adjacent wallboard vertical concrete post-cast strip, and the polyphenyl insulation board serves as the formwork outside;

[0032] Step 7: hoist and position the upper layer of the fabricated shear wall, connect the longitudinal steel bars at the top of the lower layer of the shear wall with the grouting sleeves at the bottom of the upper layer of the shear wall, and connect the notched polyphenyl insulation boards of the upper and lower wall plates and the post-smoothing mortar strips, pour grouting material into the sleeves through the reserved holes, bind additional steel mesh in the horizontal reserved strips and smooth the horizontal mortar strips between the upper and lower wall plates with high-performance insulation mortar, pour concrete in the vertical post-poured strips of the left and right wall plates, bind additional steel mesh in the vertical reserved strips and smooth the vertical mortar strips between the left and right wall plates with high-performance insulation mortar;

[0033] Step 8: remove the formwork to form the combined connection structure of the post-smoothing mortar strips and the grouting sleeves of the upper and lower wall plates and the combined connection structure of the post-smoothing mortar strips and the post-poured concrete of the left and right wall plates, paint the outer mortar surface layer of the wall plates with waterproof paint, and paint the interior reinforced concrete shear wall of the wall plates with interior wall paint.

[0034] The beneficial effects produced by the above technical solution are as follows:

[0035] 1. The steel mesh mortar-pearlite surface layer solves the poor fire resistance of traditional external insulation walls, the pearlite board has the advantages of fire resistance and good heat insulation performance, can effectively improve the fire resistance of the wall external insulation system, and reduce the risk of fire accidents of the fabricated insulation shear wall external wall system. The high-performance mortar layer has good structure, waterproof and weather-resistant performance.

[0036] 2. The light steel combined truss and load-bearing steel mesh structure can effectively resist the downward shear deformation of the mortar layer under long-term load and control the shear deformation at each floor without downward transmission, solving the technical bottleneck problem of difficult deformation control of the super-thick insulation layer under long-term load. The horizontal tie rods in the light steel combined truss and load-bearing steel mesh structure can effectively resist the peeling action perpendicular to the wall plate plane, such as wind suction, to prevent the insulation layer from peeling off the wall plate surface. The high-strength, heat-insulating and easy-to-install broken bridge self-tapping nail connecting piece avoids the cold bridge problem of traditional metal connecting pieces and has significantly improved the pull strength compared with traditional non-metal connecting pieces. The light steel frame and the reinforced concrete shear wall have reliable anchoring capacity, enhancing the integrity of the external insulation system and the shear wall.

[0037] 3. The steel mesh mortar post-smoothing strip in the combined connection structure enhances the integrity of the wall plate mortar surface layer, solves the traditional insulation board joint connection problem, improves the waterproof performance of the wall plate, and makes the wall plate insulation structure have good weather resistance. The insulation board can be used as a formwork for post-poured strips, facilitating assembly construction. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 is a schematic view of the main structure of the shear wall;

[0039] Figure 2 isFigure 1 A-A cross-sectional structure schematic diagram in

[0040] Figure 3 A-A cross-sectional structure schematic diagram in Figure 1 B-B cross-sectional structure schematic diagram in

[0041] Figure 4 B-B cross-sectional structure schematic diagram in Figure 1 C-C cross-sectional structure schematic diagram in

[0042] Figure 5 C-C cross-sectional structure schematic diagram in Figure 1 D-D cross-sectional structure schematic diagram in

[0043] Figure 6 D-D cross-sectional structure schematic diagram in Figure 1 E-E cross-sectional structure schematic diagram in

[0044] Figure 7 E-E cross-sectional structure schematic diagram in

[0045] Figure 8 E-E cross-sectional structure schematic diagram in

[0046] Figure 9 E-E cross-sectional structure schematic diagram in

[0047] Figure 10 E-E cross-sectional structure schematic diagram in

[0048] Figure 11 E-E cross-sectional structure schematic diagram in

[0049] Figure 12 E-E cross-sectional structure schematic diagram in

[0050] Figure 13 E-E cross-sectional structure schematic diagram in

[0051] In the figure: 1, shear wall concrete; 2, shear wall distribution steel bars; 3, shear wall longitudinal connecting steel bars; 4, tie steel bars; 5, grouting sleeve; 6, shear wall mortar cushion; 7, light steel frame vertical rod; 8, light steel frame horizontal rod; 9, light steel frame flange groove; 10, light steel frame self-tapping screw hole; 11, inner mortar layer; 12, inner steel wire mesh; 13, U-shaped steel wire; 14, polystyrene insulation board; 15, polystyrene insulation board dovetail groove; 16, perlite board; 17, outer mortar surface layer; 18, outer steel wire mesh; 19, horizontal broken bridge self-tapping screw connecting piece; 20, combined broken bridge self-tapping screw connecting piece; 21, steel wire mesh frame horizontal web; 22, steel wire mesh frame oblique web; 23, outer steel wire mesh cement mortar layer back plaster strip; 24, cement-based adhesive; 25, polystyrene insulation board rabbet; 26, fabricated concrete floor; 27, grouting material; 28, concrete post-cast strip. DETAILED DESCRIPTION

[0052] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0053] In the construction of the shear wall, first, according to the building structure design, the arrangement position and specific size of the light steel combined truss supporting steel wire mesh frame mortar-perlite-polystyrene insulation shear wall are determined, the thickness and reinforcement of the shear wall are determined, the thickness of the insulation layer is determined according to the building regional climate conditions, the thickness of the outer steel mesh mortar surface layer and the thickness of the perlite board are determined according to the building fireproofing, waterproofing and weather resistance requirements, the thickness of the inner mortar surface layer is determined according to the stress requirements of the external insulation system, the light steel frame is arranged, and the steel wire mesh frame and the light steel combined truss are designed according to the stress requirements; the connection node structure of the insulation shear wall is designed and stress calculation is performed; according to the design scheme of the insulation shear wall and the assembled connection node thereof, detailed structure drawing is drawn, and prefabricated wall plate manufacturing, transportation and on-site assembly construction are performed. The specific implementation is as follows:

[0054] The shear wall in the present application mainly includes the following parts:

[0055] The steel wire mesh mortar-perlite surface layer is a steel wire mesh mortar layer and a perlite fireproofing layer, each with a thickness of 25 mm, and the weight of the steel wire mesh mortar-perlite surface layer is only 1 / 2 of that of a 50 mm thick concrete protective layer, and the steel wire mesh mortar-perlite surface layer has good fire resistance and heat insulation performance, and the high-performance mortar layer with a strength grade of not less than M20 has good structure, waterproofing and weather resistance performance.

[0056] The load-bearing steel wire net rack is composed of outer steel wire net, inner steel wire net, horizontal web wire with a diameter of 2 mm and a spacing of 200*200 mm and oblique upward 45-degree web wire.

[0057] The light steel frame is welded by vertical and horizontal C-shaped steel with a spacing of no more than 800 mm, and the C-shaped steel of the light steel frame is connected with the steel wire net and the C-shaped steel by U-shaped steel wire with a diameter of 2 mm at a position with a net distance of 10 mm from the inner steel wire net.

[0058] The light steel composite truss is composed of a steel wire net mortar layer, a broken bridge self-tapping pin web rod and a frame light steel chord rod, and is composed of a 25 mm thick steel wire net mortar layer strip outer chord, a light steel frame vertical C-shaped steel inner chord, a diameter of no less than 5 mm of a sunk head broken bridge long self-tapping pin horizontal web rod and an oblique upward 45-degree web rod.

[0059] The composite connection structure is that the upper and lower concrete shear wall plates are assembled by using a steel sleeve, the left and right shear walls are assembled by using post-cast concrete strips, the connection between the upper and lower and left and right light steel composite trusses and the steel wire net rack mortar-perlite-polyurethane insulation system is connected, the perlite layers are butted, the polyurethane layers are rabbeted, 150 mm of post-mixed mortar strips are left between the adjacent two steel wire net mortar layers, and the steel wire nets in the post-mixed mortar strip area are overlapped.

[0060] As shown in Figures 1-13 , the connection relationship of each part in the connection structure is as follows:

[0061] The fabricated concrete shear wall is formed by binding the shear wall distribution steel bars 2, the shear wall longitudinal connection steel bars 3 and the tie steel bars 4 to form a shear wall steel bar cage, and the shear wall longitudinal connection steel bars 3 are connected with the grouting sleeves 5 at the lower part. The light steel frame is arranged outside the shear wall distribution steel bars 2. After pouring the shear wall concrete 1, the fabricated grouting sleeve concrete shear wall with a light steel frame is formed.

[0062] The light steel frame is welded by the light steel frame vertical rods 7 and the light steel frame horizontal rods 8, and the light steel frame vertical rods 7 and the light steel frame horizontal rods 8 are all thin-walled C-shaped steel. The light steel frame web is provided with light steel frame self-tapping pin holes 10, and the flange is provided with light steel frame flange grooves 9.

[0063] Inner steel mesh mortar layer: composed of inner steel mesh 12 and inner mortar layer 11, U-shaped steel wire 13 flange is spot welded with inner steel mesh 12, and web is welded with light steel frame.

[0064] Steel mesh mortar-perlite-polyphenyl thermal insulation structure: composed of steel mesh mortar layer composed of polyphenyl insulation board 14 with polyphenyl insulation board dovetail groove 15, perlite board 16, and outer mortar surface layer 17 and outer steel mesh 18, polyphenyl insulation board dovetail groove 15 is mechanically engaged with inner steel mesh mortar layer, and steel mesh mortar-perlite-polyphenyl thermal insulation structure is connected with fabricated concrete shear wall through light steel composite truss and load-bearing steel mesh truss.

[0065] Load-bearing steel mesh truss: composed of outer steel mesh 18, inner steel mesh 12 spot-welded steel mesh truss horizontal web 21 and steel mesh truss diagonal web 22, steel mesh truss horizontal web 21 and steel mesh truss diagonal web 22 penetrate perlite board 16 and polyphenyl insulation board 14 and extend into shear wall concrete, thereby realizing the pull connection of steel mesh mortar-perlite-polyphenyl thermal insulation structure and concrete shear wall.

[0066] Light steel composite truss: a truss composed of steel mesh outer mortar surface layer composed of outer mortar surface layer 17 and outer steel mesh 18, horizontal broken bridge self-tapping screw connector 19 web, and composite broken bridge self-tapping screw connector 20 chord, light steel composite truss is composed of steel mesh mortar layer strip outer chord composed of outer mortar surface layer 17 and outer steel mesh 18, light steel frame vertical rod 7 inner chord, horizontal broken bridge self-tapping screw connector 19 web, and composite broken bridge self-tapping screw connector 20 chord; broken bridge self-tapping screw connector penetrates perlite board 16 and polyphenyl insulation board 14 and self-tapping connects light steel frame vertical rod 7 and light steel frame horizontal rod 8.

[0067] Combined connection structure: including shear wall connection structure composed of upper and lower shear wall distribution steel bars 2, grout 27 injected into grouting sleeve 5, shear wall mortar cushion layer 6, and left and right shear wall concrete post-cast strip 28, thermal insulation layer connection structure composed of polyphenyl insulation board rabbet 25 and cement-based mortar 24, and connection structure of outer steel mesh cement mortar layer post-cast strip 23 connecting outer steel mesh 18 of upper and lower and left and right wallboards.

[0068] The shear wall concrete 1 is a fabricated reinforced concrete shear wall with a width of 3900mm, a height of 2700mm and a thickness of 250mm. The shear wall distribution steel bars 2 are arranged in double rows, the horizontal distribution steel bars are Φ10mmX200mm, the vertical distribution steel bars are Φ10mmX200mm, the net protection layer thickness is 20mm, the Φ6mm tie steel bars 4 are arranged at intervals of 400mm, the grouting sleeves 5 are used for assembly connection, 16 grouting sleeves 5 are arranged at the bottom of the wall plate at intervals of 600, and 16 Φ16mm steel bars arranged symmetrically are used as the longitudinal connection steel bars 3 of the upper and lower shear walls. The vertical distribution steel bars in the shear wall distribution steel bars 2 do not protrude from the wall plate, the top of the shear wall longitudinal connection steel bars 3 protrudes from the wall plate by 240mm and is connected with the fabricated concrete floor 26 and the upper wall plate. In the range of 300mm above the grouting sleeves 5 at the bottom of the wall plate, the total densification height is 500mm, the Φ10mmX100mm horizontal distribution steel bars of the shear wall distribution steel bars 2 are arranged in a densified manner, and the horizontal distribution steel bars protrude from the wall plate by 280mm at both ends and are overlapped with the adjacent wall plate after the post-poured concrete post-poured strip 28 is poured.

[0069] The light steel frame vertical rods 7 and the light steel frame horizontal rods 8 are welded from C-shaped steel with a vertical and horizontal interval of not more than 800, the light steel frame is point-welded at a position with a net distance of 10mm from the inner steel mesh 12 by using U-shaped steel wires 13 with a diameter of 2mm to connect the steel mesh and the light steel frame, the light steel frame vertical rods 7 are point-welded with the horizontal distribution steel wires of the inner steel mesh 12, the light steel frame horizontal rods 8 are point-welded with the vertical distribution steel wires of the inner steel mesh 12, the horizontal and vertical point-welding intervals are not more than 200mm; the cross section of the light steel frame is 70mm high, 50mm wide and not less than 2mm thick, the light steel frame has a light steel frame flange groove 9 with a width of 140mm and a height of 60mm, thereby forming a convex steel section with a net distance of 140mm, a height of 60mm and a width of 60mm; the light steel frame vertical rods 7 are anchored into the shear wall concrete 1 from a position with a net distance of 10mm from the outer distribution steel wires between the horizontal and vertical distribution steel wires of the shear wall, the net distance between the inner steel mesh 12 and the outer distribution steel wires of the shear wall is 20mm, the light steel frame 10mm high section with the convex steel section is embedded in the shear wall concrete by 10mm after the shear wall concrete is poured, and the convex steel section is anchored in the shear wall concrete by 60mm. In order to facilitate the self-tapping of the C-shaped steel webs of the light steel frame, small round holes smaller than the diameter of the self-tapping nails are opened on the webs of the light steel frame vertical rods 7 and the light steel frame horizontal rods 8, so that the self-tapping nails can pass through.

[0070] The inner mortar layer 11 and the inner steel wire mesh 12 are the mortar layer of the dovetail groove 15 of the polystyrene board and the shear wall concrete 1. The net spacing between the inner steel wire mesh 12 and the polystyrene board with the dovetail groove 14 is 10 mm. A 14 mm thick mortar with a rough surface and a strength not less than C20 is used to fill the gap between the inner steel wire mesh 12 and the polystyrene board dovetail groove 15. The U-shaped steel wire 13 is the connecting structure of the inner steel wire mesh 12 and the light steel frame. The bent flange is spot welded with the steel wire of the inner steel wire mesh 12, and the web is welded with the vertical rod 7 and the horizontal rod 8 of the light steel frame.

[0071] The polystyrene board 14 is a polystyrene board with a dovetail groove 15 at the connection between the inner side and the inner mortar layer 11. The thickness is 200 mm, which can be adjusted according to the climate conditions of the building region.

[0072] The perlite board 16 is a fireproof layer of the wallboard, and the thickness is 25 mm.

[0073] The outer mortar surface layer 17 is a 25 mm thick mortar layer with a strength not less than C20 on the outer side of the wallboard. The outer steel wire mesh 18 with a diameter of 2 mm and a spacing of 50 mm is embedded in the outer mortar surface layer 17, and the mortar net protection layer of the outer steel wire mesh 18 is 10 mm.

[0074] The horizontal broken bridge self-tapping nail connecting piece 19 and the combined broken bridge self-tapping nail connecting piece 20 are the webs of the light steel combined truss, which are connecting pieces connecting the outer chord of the 25 mm thick steel wire mesh mortar layer strip and the inner chord of the light steel frame. The sink head fiber composite connecting piece with a sinking size not less than 50, the drill through perlite-polystyrene insulation layer, and the self-tapping connection light steel frame are sunk. The sink head fiber composite connecting piece is a connecting piece formed in one step, which includes a 3*60*60 outer square plate, a 4*46*46 square plate, a hollow circular rod with an outer diameter of 14 mm and an inner diameter of 10 mm and a length of 50 mm in the middle, and a hollow circular rod with an outer diameter of 14 mm and an inner diameter of 6 mm and a length of 20 mm in the middle. The angle between the square plate and the hollow circular rod of the sink head fiber composite connecting piece of the horizontal broken bridge self-tapping nail connecting piece 19 is 90 degrees. The angle between the rectangular plate and the hollow circular rod of the sink head fiber composite connecting piece of the combined broken bridge self-tapping nail connecting piece 20 is divided into 90 degrees through the horizontal long self-tapping nail and 45 degrees through the oblique upward long self-tapping nail. The steel self-tapping nail has a nail cap diameter of 10 mm, a nail rod of 6 mm, and a length with threads. The horizontal broken bridge self-tapping nail connecting piece 19 is arranged at the top and bottom of the vertical rod 7 of the light steel frame, and the combined broken bridge self-tapping nail connecting piece 20 is arranged in the middle. The horizontal broken bridge self-tapping nail connecting piece 19 is arranged on the horizontal rod 8 of the light steel frame, and the spacing is not more than 800 mm.

[0075] The horizontal webbing wire 21 and the oblique webbing wire 22 of the steel mesh are the supporting steel wires connecting the inner steel mesh 12 and the outer steel mesh 18. The steel mesh is composed of the inner steel mesh 12, the outer steel mesh 18, the horizontal webbing wire 21 with a diameter of 2 mm and a welding interval of 200 mm, and the oblique webbing wire 22 with a 45-degree upward inclination. The horizontal webbing wire 21 and the oblique webbing wire 22 penetrate the 25 mm thick perlite plate 16 and the 24 mm thick inner mortar layer 11, and then extend into the horizontal projection of the shear wall concrete 1 by 60 mm.

[0076] The outer steel mesh cement mortar layer back plaster strip 23 is a connecting structure of the upper and lower and left and right outer steel mesh mortar layers on the wallboard. The outer mortar layer back plaster strip is reserved on the upper and lower and left and right ends of the prefabricated wallboard with a width of 75 mm. After the wallboard is hoisted and positioned, the connecting position of the outer steel mesh mortar layers of the adjacent wallboards is 150 mm wide, and the inner part is provided with a 50 mm interval and a 2 mm diameter reinforcing steel mesh, and is coated with high-performance insulation mortar. The outer steel mesh cement mortar layer back plaster strip 23 ensures the integrity of the wallboard connecting joint and has good waterproofness, thereby improving the weather resistance of the wallboard.

[0077] The cement-based adhesive 24 is an inorganic bonding material coated on the polyphenyl insulation board joint 25 at the connecting position of the wallboard, which can enhance the integrity and waterproof performance of the polyphenyl insulation board joint 25.

[0078] The fabricated concrete floor 26 is a prefabricated concrete floor between the upper and lower fabricated shear walls, which is connected with the shear wall concrete 1 through the shear wall longitudinal connecting steel bars 3.

[0079] The grouting material 27 is a connecting material for the shear wall longitudinal connecting steel bars 3 of the lower wallboard and the grouting sleeve 5 of the upper wallboard. After the assembly of the upper wallboard is completed, the shear wall longitudinal connecting steel bars 3 are inserted into the grouting sleeve 5 of the upper wallboard, and the grouting material 27 is injected into the grouting hole to complete the connection of the upper and lower shear wall longitudinal connecting steel bars 3.

[0080] The concrete back-poured strip 28 is a left and right adjacent wallboard assembly connecting structure. The horizontal distribution steel bars protrude from the left and right ends of the wallboard by 280 mm, and the vertical structural bars and the tie steel bars are lapped and bound to pour the concrete back-poured strip 28, thereby completing the assembly connection of the left and right wallboards.

[0081] The method and construction process of the shear wall are as follows:

[0082] First, the thermal insulation shear wall is prepared, and the steps are as follows:

[0083] First step: factory processing light steel frame vertical rod and horizontal rod, and welding C-shaped steel and light steel frame, binding shear wall steel reinforcement cage, installing grouting sleeve 5, purchasing polystyrene insulation board and perlite board, and cutting and assembling them into the required size; preparing inner and outer steel wire mesh, steel wire mesh frame web, and horizontal broken bridge self-tapping screw connecting piece and combined broken bridge self-tapping screw connecting piece;

[0084] Second step: installing and positioning the light steel frame on the shear wall steel reinforcement cage, connecting the inner steel wire mesh on the light steel frame through the U-shaped steel wire, spacing the inner mortar layer between the light steel frame and the polystyrene insulation board dovetail groove surface through the engineering plastic cushion block, and positioning the polystyrene insulation board, perlite board, and outer steel wire mesh;

[0085] Third step: sequentially penetrating the perlite board and polystyrene insulation board with the steel wire mesh frame horizontal web and steel wire mesh frame diagonal web, welding the steel wire mesh frame web at both ends with the inner and outer steel wire mesh to form a steel wire mesh frame, and extending into the shear wall interior for a certain anchoring distance; sequentially penetrating the perlite board and polystyrene insulation board with the horizontal broken bridge self-tapping screw connecting piece and the combined broken bridge self-tapping screw connecting piece long self-tapping screw, self-tapping connecting the light steel frame, and extending into the shear wall interior for a certain anchoring distance;

[0086] Fourth step: pouring the inner and outer steel wire mesh mortar surface layer and curing;

[0087] Fifth step: using the steel wire mesh mortar-perlite-polystyrene insulation structure as a base mold, pouring the shear wall concrete, and curing;

[0088] Then the prepared shear wall is assembled and constructed, the steps are as follows:

[0089] Sixth step: installing the fabricated concrete floor to the upper part of the lower concrete shear wall and laying a mortar cushion layer; overlapping the left and right fabricated shear walls horizontally, binding the vertical structural reinforcement and tie reinforcement, and placing the formwork on the inner side of the vertical concrete post-cast strip between the left and right adjacent wall panels, with the polystyrene insulation board serving as the formwork on the outer side;

[0090] Seventh step: hoisting and positioning the upper fabricated shear wall, connecting the longitudinal load-bearing steel reinforcement at the top of the lower shear wall with the grouting sleeve at the bottom of the upper shear wall, and connecting the polystyrene insulation board joints and post-mortar strip between the upper and lower wall panels, pouring grouting material into the sleeve through the reserved hole, binding additional steel wire mesh in the horizontal reserved strip, and using high-performance insulation mortar to smooth the horizontal mortar strip between the upper and lower wall panels; pouring concrete in the vertical post-cast strip between the left and right wall panels, and binding additional steel wire mesh in the vertical reserved strip and using high-performance insulation mortar to smooth the vertical mortar strip between the left and right wall panels;

[0091] The eighth step is to remove the template, form the upper and lower wallboard, the rear mortar strip and the grouting sleeve combined connection structure, and the rear mortar strip and the rear poured concrete combined connection structure of the left and right wallboards, paint the outer leaf mortar surface layer of the wallboard with waterproof paint, and paint the internal reinforced concrete shear wall of the wallboard with interior wall paint.

[0092] The above merely describes the preferred embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can make equivalent replacements or changes within the technical scope disclosed by the present application and according to the technical solutions and the inventive concept of the present application, which should be covered within the protection scope of the present application.

Claims

1. A fabricated light steel composite truss supported steel wire mesh frame mortar-perlite-polyphenyl composite shear wall, characterized in that, The application relates to a prefabricated concrete shear wall, which comprises a shear wall steel reinforcement cage formed by binding shear wall distribution steel bars, shear wall longitudinal connecting steel bars and tie steel bars, and pouring shear wall concrete, a light steel frame arranged outside the shear wall distribution steel bars and welded by light steel frame vertical rods and light steel frame horizontal rods, wherein the light steel frame vertical rods and the light steel frame horizontal rods are thin-wall C-shaped steel, the light steel frame vertical rods and the light steel frame horizontal rods are provided with light steel frame self-tapping screw holes in the web and light steel frame flange grooves in the flanges, an inner steel mesh mortar layer formed by pouring inner mortar layer by inner steel mesh, U-shaped steel wires welded with the inner steel mesh at the flanges and welded with the light steel frame at the webs, a steel mesh frame mortar-pearlite-polyphenyl thermal insulation structure composed of polyphenyl insulation boards with polyphenyl insulation board dovetail grooves, pearlite boards and steel mesh mortar surface layers, wherein the steel mesh mortar surface layers comprise outer mortar surface layers and outer steel meshes, the polyphenyl insulation board dovetail grooves are mechanically engaged with the inner steel mesh mortar layer, a light steel combined truss composed of the outer chords of the steel mesh mortar layer strips formed by the outer mortar surface layers and the outer steel meshes, the inner chords of the light steel frame vertical rods, the web rods of the horizontal broken-bridge self-tapping screw connecting pieces and the chord rods of the combined broken-bridge self-tapping screw connecting pieces, the broken-bridge self-tapping screw connecting pieces are used for self-tapping connecting the light steel frame vertical rods and the light steel frame horizontal rods after penetrating the pearlite boards and the polyphenyl insulation boards, a load-bearing steel mesh frame composed of the outer steel meshes, the inner steel meshes, steel mesh frame horizontal web wires and steel mesh frame oblique web wires, the steel mesh frame horizontal web wires and the steel mesh frame oblique web wires penetrate the pearlite boards and the polyphenyl insulation boards and then extend into shear wall concrete, the steel mesh frame mortar-pearlite-polyphenyl thermal insulation structure is connected with the prefabricated concrete shear wall through the light steel combined truss and the load-bearing steel mesh frame, a combined connecting structure comprising shear wall connecting structures formed by shear wall distribution steel bars in upper and lower shear walls, grouting materials in the grouting sleeves, shear wall mortar cushion layers and concrete post-pouring strips on left and right shear walls, thermal insulation layer connecting structures formed by polyphenyl insulation board rabbet cement-based mortar and connecting structures of outer steel meshes of upper and lower wall plates and left and right wall plates connected by outer steel mesh cement mortar layer post-pouring strips, vertical distribution steel bars in the shear wall distribution steel bars do not protrude from the wall plates, the top of the shear wall longitudinal connecting steel bars protrudes from the wall plates by 240 mm and is connected with prefabricated concrete floors and upper wall plates, the prefabricated concrete floors are prefabricated concrete floors between upper and lower prefabricated shear walls and are connected with the concrete shear walls through the shear wall longitudinal connecting steel bars. ​ ​ ​ ​ ​ ​ ​ ​ ​ The light steel frame vertical pole and the light steel frame horizontal pole are welded by C-shaped steel with vertical and horizontal spacing not greater than 800 mm, and the light steel frame is spot welded by 2 mm diameter U-shaped steel wire at a position with a net distance of 10 mm from the inner steel mesh to connect the steel mesh and the light steel frame, the light steel frame vertical pole is spot welded with the horizontal distribution steel wire of the inner steel mesh, and the light steel frame horizontal pole is spot welded with the vertical distribution steel wire of the inner steel mesh, and the horizontal and vertical spot welding spacing is not greater than 200 mm; The inner mortar layer and the inner steel mesh are the mortar layer of the dovetail groove of the polyphenyl insulation board and the concrete shear wall, the net distance between the inner steel mesh and the polyphenyl insulation board with dovetail groove is 10 mm, and the 14 mm thick mortar with rough surface is used to cover the gap between the inner steel mesh and the polyphenyl insulation board dovetail groove with strength greater than or equal to C20; the U-shaped steel wire is the connecting structure of the inner steel mesh and the light steel frame, the bending flange is spot welded with the steel wire of the inner steel mesh, and the web is welded and connected with the light steel frame vertical pole and the light steel frame horizontal pole; the polyphenyl insulation board is a polyphenyl insulation board with dovetail groove at the connection between the inner side and the inner mortar layer, and the thickness is 200 mm; The horizontal broken bridge self-tapping screw connecting piece and the combined broken bridge self-tapping screw connecting piece are the webs of the light steel combined truss, which are connecting pieces connecting the outer chord of the 25 mm thick steel mesh mortar layer strip and the inner chord of the light steel frame; the sink size of the horizontal broken bridge self-tapping screw connecting piece and the combined broken bridge self-tapping screw connecting piece is not less than 50 mm of the countersunk head fiber composite connecting piece, which drills through the perlite-polyphenyl insulation layer and connects the light steel frame by self-tapping; The angle between the square plate and the hollow circular rod of the countersunk head fiber composite connecting piece of the horizontal broken bridge self-tapping screw connecting piece is 90 degrees, and the angle between the rectangular plate and the hollow circular rod of the countersunk head fiber composite connecting piece of the combined broken bridge self-tapping screw connecting piece is divided into 90 degrees through the horizontal long self-tapping screw and 45 degrees through the oblique upward long self-tapping screw; The outer steel mesh cement mortar layer back plaster strip is the connecting structure of the upper and lower and left and right outer steel mesh mortar layers of the wallboard; the outer mortar surface layer back plaster strip with a width of 75 mm is reserved at the upper, lower and left and right ends of the prefabricated wallboard, and the connecting position of the outer steel mesh mortar layers of the adjacent wallboards is the outer mortar surface layer back plaster strip with a width of 150 mm after the wallboard is hoisted and positioned; The cement-based mortar is an inorganic bonding material applied to the rabbet of the polyphenyl insulation board at the wallboard connecting position, which can enhance the integrity and waterproof performance of the polyphenyl insulation board rabbet; The concrete back-poured strip is a left and right adjacent wallboard assembly connecting structure, and the horizontal distribution steel bar protrudes 280 mm from the left and right ends of the wallboard and overlaps and binds the vertical structural bar and the tie steel bar of the adjacent wallboard to back-pour the concrete back-poured strip, thereby completing the assembly connection of the left and right wallboards.

2. The fabricated light steel composite truss supported wire meshed frame mortar-pearlite-polyphenyl composite shear wall according to claim 1, characterized in that, The size of the concrete shear wall is 3900mm in width, 2700mm in height and 250mm in thickness; the shear wall distribution steel bars adopt double-row distribution steel bars, the horizontal distribution steel bars are 10mm in diameter and 200mm in spacing, the vertical distribution steel bars are 10mm in diameter and 200mm in spacing, the net protection layer thickness is 20mm, the tie steel bars with a diameter of 6mm are arranged at intervals of 400mm; the grouting sleeve assembly connection is adopted, 16 grouting sleeves are arranged at the bottom of the wall plate at intervals of 600mm, 16 steel bars with a diameter of 16mm arranged symmetrically are used as the shear wall longitudinal connecting steel bars of the upper and lower shear walls; within the range of 300mm above the grouting sleeves at the bottom of the wall plate, the total encryption height is 500mm, the horizontal distribution steel bars with a diameter of 10mm and a spacing of 100mm are arranged to encrypt the shear wall distribution steel bars, and the horizontal distribution steel bars protrude from the left and right ends of the wall plate by 280mm and lap the adjacent wall plate after pouring the post-cast concrete strip.

3. The fabricated light steel composite truss supported wire meshed frame mortar-pearlite-polyphenyl composite shear wall according to claim 1, characterized in that, The cross section of the light steel frame is 70mm in height and 50mm in width, and the plate thickness is greater than or equal to 2mm, a light steel frame flange groove with a width of 140mm and a height of 60mm is formed on the light steel frame, thereby forming a convex steel segment with a net distance of 140mm, a height of 60mm and a width of 60mm; the convex steel segment on the vertical rod of the light steel frame is anchored into the concrete shear wall from the position with a distance of 10mm from the outer side distribution steel bar between the horizontal and vertical distribution steel bars of the shear wall, the net distance between the inner steel mesh and the outer side distribution steel bar of the shear wall is 20mm, the light steel frame with the convex steel segment is embedded into the concrete shear wall by 10mm after pouring the shear wall concrete, and the convex steel segment is anchored in the concrete shear wall by 60mm; a circular hole smaller than the diameter of the self-tapping nail is formed on the C-shaped web of the light steel frame vertical rod and the light steel frame horizontal rod to facilitate the self-tapping nail to pass through.

4. The assembled light steel composite truss supporting wire mesh frame mortar-pearlite-polyphenyl composite shear wall according to claim 1, characterized in that, The countersunk fiber composite connecting piece is a one-time formed connecting piece with an outer square plate of 3mm*60mm*60mm, a square plate with a setback of 4mm*46mm*46mm, a hollow circular rod with an outer diameter of 14mm, an inner diameter of 10mm and a length of 50mm in the middle, and a hollow circular rod with an outer diameter of 14mm, an inner diameter of 6mm and a length of 20mm in the middle; the steel self-tapping nail has a nail cap diameter of 10mm, a nail rod of 6mm and a length with threads; the horizontal broken bridge self-tapping nail connecting piece is arranged at the top and bottom of the light steel frame vertical rod, and the combined broken bridge self-tapping nail connecting piece is arranged in the middle; the horizontal broken bridge self-tapping nail connecting piece is arranged on the light steel frame horizontal rod at an interval of less than or equal to 800mm.

5. The assembled light steel composite truss supported wire meshed frame mortar-pearlite-polyphenyl composite shear wall according to claim 1, characterized in that, The steel wire mesh frame horizontal web and the steel wire mesh frame diagonal web are supporting steel wires connecting the inner steel wire mesh and the outer steel wire mesh, the steel wire mesh frame is composed of the inner steel wire mesh, the outer steel wire mesh, the steel wire mesh frame horizontal web with a diameter of 2mm and a point welding spacing of 200mm, and the steel wire mesh frame diagonal web with an upward inclination of 45 degrees, the horizontal projection of the steel wire mesh frame horizontal web and the steel wire mesh frame diagonal web into the concrete shear wall is 60mm after penetrating through the 25mm thick perlite plate, the 24mm thick inner mortar layer and the 200mm thick polyphenyl insulation board with a dovetail groove.

6. The method for implementing the fabricated light steel composite truss supported wire mesh frame mortar-perlite-polyphenyl composite shear wall according to any one of claims 1-5, characterized in that, The following is included: First, the heat preservation shear wall is prepared, and the steps are as follows: First step: Factory processing light steel frame vertical rods and light steel frame horizontal rods, and welding the processed C-shaped steel and light steel frame, binding shear wall steel reinforcement cage, installing grouting sleeve, purchasing polystyrene insulation board and perlite board, and cutting and assembling them into the required size; Preparing internal and external steel wire mesh, steel wire mesh frame web, and horizontal broken bridge self-tapping nail connecting piece and combined broken bridge self-tapping nail connecting piece; Second step: Install and position the light steel frame on the shear wall steel reinforcement cage, connect the internal steel wire mesh to the light steel frame through the U-shaped steel wire, and position the polystyrene insulation board and perlite board through the engineering plastic cushion block, with the internal and external steel wire mesh spacing the thickness of the internal and external mortar layers and the polystyrene insulation board dovetail groove surface; Third step: The steel wire mesh frame horizontal web and steel wire mesh frame diagonal web penetrate the perlite board and polystyrene insulation board in turn, and the steel wire mesh frame web is point-welded to the internal and external steel wire mesh at both ends to form a steel wire mesh frame, and extends into the shear wall interior for a certain anchoring distance; The horizontal broken bridge self-tapping nail connecting piece and the combined broken bridge self-tapping nail connecting piece long self-tapping nail penetrate the perlite board and polystyrene insulation board in turn, and self-tapping connects the light steel frame, and extends into the shear wall interior for a certain anchoring distance; Fourth step: Pouring internal and external steel wire mesh mortar surface layer and curing; Fifth step: Using steel wire mesh mortar-perlite-polystyrene insulation structure as the base mold, pouring shear wall concrete, and curing; Then the prepared shear wall is assembled and constructed, the steps are as follows: Sixth step: Install the fabricated concrete floor to the upper part of the lower concrete shear wall, and lay a mortar cushion layer; Lap the left and right fabricated shear walls horizontally, bind the vertical structural steel bars and tie steel bars, and place the formwork on the inner side of the vertical concrete post-cast strip between the left and right adjacent wall panels, and the polystyrene insulation board on the outer side serves as the formwork; Seventh step: Hoist and position the upper fabricated shear wall, butt joint the lower shear wall top longitudinal load-bearing steel bars with the upper shear wall bottom grouting sleeve, and butt joint the polystyrene insulation boards of the upper and lower wall panels and the post-smoothing mortar strips, pour grouting material into the sleeve through the reserved hole, bind additional steel wire mesh in the horizontal reserved strip, and use high-performance insulation mortar to smooth the horizontal mortar strips between the upper and lower wall panels; Pour concrete into the vertical post-cast strips of the left and right wall panels, bind additional steel wire mesh in the vertical reserved strip, and use high-performance insulation mortar to smooth the vertical mortar strips between the left and right wall panels; Eighth step: Remove the formwork to form the post-smoothing mortar strip and grouting sleeve combined connection structure of the upper and lower wall panels, and the post-smoothing mortar strip and post-cast concrete combined connection structure of the left and right wall panels, paint the wall panel outer leaf mortar surface layer with waterproof paint, and paint the internal reinforced concrete shear wall of the wall panel with interior wall paint.

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