CN218894248U - Assembled light steel combined steel wire net rack mortar-perlite-polyphenyl composite shear wall - Google Patents
Assembled light steel combined steel wire net rack mortar-perlite-polyphenyl composite shear wall Download PDFInfo
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- CN218894248U CN218894248U CN202223507723.XU CN202223507723U CN218894248U CN 218894248 U CN218894248 U CN 218894248U CN 202223507723 U CN202223507723 U CN 202223507723U CN 218894248 U CN218894248 U CN 218894248U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model discloses an assembled light steel combined steel wire net rack mortar-perlite-polyphenyl composite shear wall, and relates to the technical field of assembled concrete building structural engineering. The steel wire mesh mortar-perlite composite truss comprises a steel wire mesh mortar-perlite surface layer, a perlite fireproof layer, an outer steel wire mesh, a light steel sash, a light steel composite truss and a composite connection structure. The inner steel wire mesh of the bearing steel wire mesh frame is formed by spot welding a horizontal web wire and an inclined web wire, and the horizontal web wire and the inclined web wire extend into the shear wall concrete; the light steel sash is formed by welding C-shaped steel, and U-shaped steel wires are respectively connected with a steel wire mesh and the C-shaped steel in a spot welding mode; the light steel combined truss is a truss formed by a steel wire mesh mortar layer, a bridge-cut-off self-tapping screw web member and a lattice light steel string member; the combined connection structure is assembled by adopting a steel bar sleeve between the upper shear wallboard and the lower shear wallboard; the utility model has the characteristics of thin thickness, light weight, good fire resistance and heat insulation performance and good stress performance.
Description
Technical Field
The utility model belongs to the technical field of assembled concrete building structure engineering, and particularly relates to an assembled light steel combined truss supported steel wire net rack mortar-perlite-polyphenyl composite shear wall.
Background
At present, the assembled building develops rapidly, the assembled concrete structure is widely applied in multi-storey and high-rise residential buildings, but the innovative development of the ultra-low energy consumption assembled building and the heat preservation energy-saving prefabricated part matched with the assembled building is lagged, and the problems of low thermal performance, low integration degree and the like of the enclosure structure of the ultra-low energy consumption and near-zero energy consumption building still exist. Therefore, aiming at different climate areas in China, a multifunctional integrated assembled shear wall outer wall system is developed, and an assembled frame system composite outer wall integrating decoration, fire resistance, water resistance, heat insulation and weather resistance is developed, so that the multifunctional integrated assembled shear wall outer wall system is a great and urgent need for the development of assembled green buildings in China.
Bottleneck problem in the prior art: 1, the traditional external thermal insulation of the external wall is easy to fall off under the wind load and long-term load effect, and has poor weather resistance, in recent years, the safety accidents caused by the falling off of the external thermal insulation layer of the external wall frequently occur, and the accidents are concentrated to occur that the thermal insulation mortar falls off and the inorganic lightweight aggregate fireproof thermal insulation board mainly adhered to fall off; once the outer insulation layer of the outer wall is empty and drops, the outer insulation layer and the outer decoration layer drop from the high altitude in a large area, so that the surrounding pedestrians or objects are easily damaged; 2, deformation of the super-thick heat-insulating layer is difficult to control under long-term load, the use of the traditional outer heat-insulating layer is limited by building height, and as the outer heat-insulating layer of the outer wall is arranged along the through height of the outer wall of the building, and the elastic modulus of the heat-insulating plate is lower and deforms greatly, the gravity load of the mortar heat-insulating layer cannot be completely transferred to the main structure of the layer, so that the gravity load accumulation effect can be generated along with the improvement of the structure height, the integral stability of the outer heat-insulating layer is not beneficial, the application height of the thin-plastered outer wall heat-insulating system is strictly limited in the domestic part, and the ceramic face brick is required to be forbidden to be used for the facing layer of the thin-plastered outer wall heat-insulating system so as to avoid falling risks; 3, the traditional external heat-insulating wall body has poor fire resistance, most external heat-insulating structures have no fireproof protection layer, and organic heat-insulating plates such as polystyrene, polyurethane, foaming rubber and the like have poor fire resistance, so that a plurality of external heat-insulating system fire accidents occur; the outer heat-insulating structure and the base wall are anchored and connected by adopting expansion plastic anchor bolts and heat-insulating plastic nails, so that the nonmetal connecting piece has low tensile strength and shear strength and poor weather resistance, and the effective drawknot of the heat-insulating structure and the wallboard cannot be ensured; 5 the traditional external heat-insulating plate is difficult to process the seam, the problem of water leakage at the seam position is serious, and the heat-insulating structure is easy to loosen and fall off.
Disclosure of Invention
The utility model aims to solve the technical problem of providing an assembled light steel combined truss supported steel wire net rack mortar-perlite-polyphenyl composite shear wall which is suitable for an ultra-low energy consumption house non-hole outer wall of an assembled concrete shear wall structure. The steel wire mesh frame mortar surface layer-perlite is thin in thickness, light in weight, good in fire resistance and heat insulation performance, and the high-performance mortar layer with the strength grade not smaller than M20 has good structure, waterproof performance and weather resistance. The truss formed by the steel wire mesh mortar layer, the bridge-cut-off self-tapping screw web members and the lattice light steel string rods can support the weight of the outer mortar of the shear wall, the fireproof heat-insulating layer and effectively limit the downward shearing deformation of the mortar layer under long-term load. The polyphenyl heat-insulating layer can be selected in thickness according to the climatic conditions of the building region, so that the heat insulation performance of the outer wall is ensured.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the assembled light steel combined truss bearing steel wire net rack mortar-perlite-polyphenyl composite shear wall comprises:
the assembled concrete shear wall is formed by binding distributed steel bars of the shear wall, longitudinal connecting steel bars of the shear wall and tie steel bars to form a steel bar cage of the shear wall, and then pouring concrete of the shear wall, wherein the lower part of the longitudinal connecting steel bars of the shear wall is connected with a grouting sleeve;
the light steel frame is arranged on the outer side of the shear wall distributed steel bars and is formed by welding light steel frame vertical rods and light steel frame horizontal rods; the light steel sash vertical rods and the light steel sash horizontal rods are all made of thin-wall C-shaped steel, light steel sash self-tapping screw holes are formed in light steel sash webs, and light steel sash flange grooves are formed in flanges;
the inner steel wire mesh mortar layer is formed by pouring an inner mortar layer through an inner steel wire mesh;
the U-shaped steel wire, the flange and the inner steel wire mesh are in spot welding, and the belly is in welded connection with the light steel sash;
the steel wire mesh mortar-perlite-polyphenyl thermal insulation structure consists of a polyphenyl thermal insulation board with a polyphenyl thermal insulation board dovetail groove, a perlite board and a steel wire mesh mortar surface layer, wherein the steel wire mesh mortar surface layer comprises an outer mortar surface layer and an outer steel wire mesh, and the polyphenyl thermal insulation board dovetail groove is mechanically meshed with the inner steel wire mesh mortar layer;
the light steel combined truss consists of an outer chord of a steel wire mesh mortar layer strip formed by an outer mortar surface layer and an outer steel wire mesh, an inner chord of a light steel frame lattice vertical rod, a web member of a horizontal bridge-cut-off self-tapping screw connecting piece and a chord member of a combined bridge-cut-off self-tapping screw connecting piece; the bridge-cut-off self-tapping screw connecting piece drills through the perlite plate and the polyphenyl insulation board and then self-taps and connects the light steel sash vertical rod and the light steel sash horizontal rod
The bearing steel wire net frame consists of the outer steel wire net, the inner steel wire net spot welding steel wire net frame horizontal web wires and the steel wire net oblique web wires, and the steel wire net frame horizontal web wires and the steel wire net oblique web wires penetrate through the perlite plates and the polyphenyl heat insulation plates and then extend into shear wall concrete; the steel wire net rack mortar-perlite-polyphenyl thermal insulation structure is connected with the assembled concrete shear wall through the light steel combined truss and the bearing steel wire net rack;
the combined connection structure comprises a shear wall connection structure formed by shear wall distribution steel bars in an upper shear wall and a lower shear wall, grouting materials in a grouting sleeve, a shear wall mortar cushion layer and concrete post-pouring strips on a left shear wall and a right shear wall, and also comprises a heat preservation connection structure formed by coating cement-based adhesive cement on a tongue-and-groove of a polyphenyl heat preservation plate and a connection structure of an outer steel wire mesh of an upper wall plate, a lower wall plate, a left wall plate and a right wall plate, wherein the upper wall plate, the lower wall plate and the left wall plate are connected by coating strips behind an outer steel wire mesh cement mortar layer.
Preferably, the dimensions of the concrete shear wall are 3900mm wide, 2700mm high and 250mm thick; the shear wall distributed steel bars adopt double rows of reinforced bars, the diameters of the horizontally distributed steel bars are 10mm, the spacing is 200mm, the diameters of the vertically distributed steel bars are 10mm, the spacing is 200mm, the thickness of the net protective layer is 20mm, and tie steel bars with the diameters of 6mm are arranged at intervals of 400 mm; the method comprises the steps of adopting grouting sleeve assembly connection, arranging 16 grouting sleeves at the bottom of a wallboard at a distance of 600mm, and adopting 16 symmetrically arranged steel bars with the diameter of 16mm as longitudinal connecting steel bars of a shear wall of an upper shear wall and a lower shear wall; the vertical distribution steel bars in the shear wall distribution steel bars do not protrude out of the wallboard, and the tops of the longitudinal connection steel bars of the shear wall protrude out of the wallboard by 240mm and are connected with the assembled concrete floor slab and the upper wallboard; the assembled concrete floor slab is a precast concrete floor slab between an upper assembled shear wall and a lower assembled shear wall, and is connected with the concrete shear wall through a longitudinal connecting reinforcing steel bar of the shear wall; and in the range of the grouting sleeve at the bottom of the wallboard and 300mm above the grouting sleeve, the total encryption height is 500mm, the diameters of the distributed steel bars of the encryption arranged shear wall are 10mm, the spacing is 100mm, the horizontally distributed steel bars protrude from the left end and the right end of the wallboard, and 280mm of the horizontally distributed steel bars are overlapped with the adjacent wallboard, and then the concrete post-pouring strip is poured.
Preferably, the light steel sash vertical rods and the light steel sash horizontal rods are formed by welding C-shaped steel with vertical and horizontal distances not more than 800, the light steel sash is respectively spot-welded at a position with a clear distance of 10mm from the inner steel wire mesh by adopting U-shaped steel wires with diameters of 2mm to connect the steel wire mesh and the light steel sash, the light steel sash vertical rods and the horizontal distributed steel wires of the inner steel wire mesh are spot-welded, the light steel sash horizontal rods and the vertical distributed steel wires of the inner steel wire mesh are spot-welded, and the distance between the horizontal and vertical spot-welded is not more than 200mm; the light steel sash is provided with a light steel sash flange groove with the width of 140mm and the height of 60mm on the light steel sash, wherein the section of the light steel sash is 70mm, the width of the light steel sash is 50mm, the plate thickness of the light steel sash is more than or equal to 2mm, and the light steel sash flange groove with the width of 140mm and the height of 60mm is formed, so that a convex steel section with the clear distance of 140mm, the height of 60mm and the width of 60mm is formed; the protruding steel sections on the vertical rods of the light steel frame are anchored into the concrete shear wall from the positions, between the horizontal and vertical distributed steel bars of the shear wall, of the clear distance between the inner steel wire mesh 12 and the steel bars distributed on the outer side of the shear wall, the clear distance between the inner steel wire mesh 12 and the steel bars distributed on the outer side of the shear wall is 20mm, the light steel frame with the protruding steel sections after the concrete of the shear wall is poured is 10mm through the high section embedded into the concrete of the shear wall, and the protruding steel sections are anchored in the concrete of the shear wall by 60mm; round holes smaller than the diameter of the self-tapping screw are formed in the C-shaped web plates of the vertical rods of the light steel frame and the horizontal rods of the light steel frame, so that the self-tapping screw can conveniently penetrate through the round holes.
Preferably, the inner mortar layer and the inner steel wire mesh are mortar layers of a polyphenyl insulation board dovetail groove and a concrete shear wall, the net distance between the inner steel wire mesh and the polyphenyl insulation board with the dovetail groove is 10mm, and the gap between the inner steel wire mesh and the polyphenyl insulation board dovetail groove is smoothed by adopting 14mm thick mortar with the strength being more than or equal to C20; the U-shaped steel wire is of a connection structure of the inner steel wire mesh and the light steel sash, the bending flange of the U-shaped steel wire is in spot welding with the steel wire of the inner steel wire mesh, and the web member is in welded connection with the light steel sash vertical rod and the light steel sash horizontal rod; the polyphenyl thermal insulation board is provided with a dovetail groove at the joint of the inner side and the inner mortar layer, and the thickness is 200mm.
Preferably, the horizontal broken bridge self-tapping screw connecting piece and the combined broken bridge self-tapping screw connecting piece are web members of a light steel combined truss and are connecting pieces for connecting an outer chord of a 25mm thick steel wire mesh mortar layer strip and an inner chord of a light steel sash; the sinking dimension of the horizontal broken bridge self-tapping screw connecting piece and the combined broken bridge self-tapping screw connecting piece is not less than 50mm, and the sinking dimension of the countersunk fiber composite connecting piece is used for drilling through the perlite-polyphenyl insulating layer and the self-tapping connecting light steel sash; the countersunk head fiber composite connecting piece is a connecting piece formed by one step, wherein the connecting piece comprises an outer square plate with the diameter of 3mmX60mmX60, a square plate with the diameter of 4mmX46mmX46mm of a withdrawal table, a hollow round rod with the outer diameter of 14mm and the inner diameter of 10mm and the length of 50mm in the middle, and a hollow round rod with the outer diameter of 14mm and the inner diameter of 6mm and the length of 20mm in the middle; the angle between the square plate of the countersunk fiber composite connecting piece and the hollow round bar of the horizontal bridge-cut-off self-tapping screw connecting piece is 90 degrees, and the angle between the rectangular plate of the countersunk fiber composite connecting piece and the hollow round bar of the combined bridge-cut-off self-tapping screw connecting piece 20 is divided into 90 degrees penetrating through a horizontal long self-tapping screw and 45 degrees penetrating through an inclined upward long self-tapping screw; the diameter of the screw cap of the steel self-tapping screw is 10mm, the diameter of the screw rod is 6mm, and the screw rod is threaded in a through length; the top and the bottom of the light steel sash vertical rod are provided with the horizontal bridge-cut-off self-tapping screw connecting pieces, and the middle part of the light steel sash vertical rod is provided with the combined bridge-cut-off self-tapping screw connecting pieces; horizontal broken bridge self-tapping screw connecting pieces are arranged on the horizontal rods of the light steel frame, and the distance is smaller than or equal to 800mm.
Preferably, the steel wire net frame horizontal web wires and the steel wire net frame oblique web wires are supporting steel bar wires for connecting the inner steel wire net and the outer steel wire net, the steel wire net frame consists of steel wire net frame horizontal web wires with the diameter of 2mm and steel wire net frame oblique web wires with the 45-degree oblique upward direction, the steel wire net frame horizontal web wires and the steel wire net frame oblique web wires penetrate through a perlite plate with the thickness of 25mm and a 200-thickness polyphenyl insulation board with a dovetail groove, which is adhered on an inner mortar layer with the thickness of 24mm, and then extend into a horizontal projection of the concrete shear wall to be 60mm.
Preferably, the back smearing strip of the outer steel wire mesh cement mortar layer is of a connecting structure of the left outer steel wire mesh mortar layer, the right outer steel wire mesh mortar layer and the upper part of the wallboard; the upper end, the lower end, the left end and the right end of the prefabricated wallboard are reserved with outer mortar surface layers with the width of 75mm, and after the wallboard is hoisted and positioned, the connecting positions of the outer steel wire mesh mortar layers of the upper and the lower or the left and the right adjacent wallboards are 150mm wide, and then the outer mortar surface layers are smeared.
Preferably, the cement-based adhesive cement is an inorganic bonding material smeared at the tongue-and-groove of the polyphenyl thermal insulation board at the connecting position of the wallboard, so that the integrity and the waterproof performance of the tongue-and-groove of the polyphenyl thermal insulation board can be enhanced.
Preferably, the concrete post-pouring strip is in an assembly connection structure of left and right adjacent wallboards, 280mm of the left and right ends of the horizontally distributed reinforcing steel bars protruding out of the wallboards are overlapped with the adjacent wallboards, and the concrete post-pouring strip is poured after the vertical structural steel bars and the tie reinforcing steel bars are bound, so that the assembly connection of the left and right wallboards is completed.
The method for supporting the steel wire mesh frame mortar-perlite-polyphenyl composite shear wall by the assembled light steel combined truss comprises the following steps:
firstly, preparing a thermal insulation shear wall, which comprises the following steps:
the first step: processing a light steel sash vertical rod and a light steel sash horizontal rod in a factory, welding the processed C-shaped steel and the light steel sash, binding a shear wall reinforcement cage, installing a grouting sleeve, purchasing a polyphenyl insulation board and a perlite board, and cutting and assembling the polyphenyl insulation board and the perlite board into required sizes; preparing an inner steel wire mesh, an outer steel wire mesh frame abdominal wire, a horizontal broken bridge self-tapping screw connecting piece and a combined broken bridge self-tapping screw connecting piece;
and a second step of: the method comprises the steps of mounting and positioning a light steel sash on a shear wall reinforcement cage, connecting an inner steel wire mesh on the light steel sash through U-shaped steel wires, spacing the thickness of an inner mortar layer on the surfaces of dovetail grooves of the light steel sash and a polyphenyl thermal insulation board through engineering plastic cushion blocks, and positioning the polyphenyl thermal insulation board, the perlite board and an outer steel wire mesh;
and a third step of: sequentially penetrating the horizontal web wires of the steel wire mesh frame and the oblique web wires of the steel wire mesh frame through a perlite plate and a polyphenyl heat insulation plate, spot-welding two ends of the web wires of the steel wire mesh frame with an inner steel wire mesh and an outer steel wire mesh to form the steel wire mesh frame, and extending into the shear wall for a certain anchoring distance; the horizontal bridge-cut-off self-tapping screw connecting piece and the long self-tapping screw of the combined bridge-cut-off self-tapping screw connecting piece sequentially penetrate through the perlite plate and the polyphenyl insulation plate, are connected with the light steel sash in a self-tapping mode, and extend into the shear wall for a certain anchoring distance;
fourth step: pouring the inner and outer steel wire mesh mortar surface layers, and curing;
fifth step: taking a steel wire frame mortar-perlite-polyphenyl thermal insulation structure as a bottom die, pouring shear wall concrete, and curing;
and then, assembling and constructing the prepared shear wall, wherein the steps are as follows:
sixth step: mounting the assembled concrete floor slab on the upper part of the lower concrete shear wall, and paving a mortar cushion layer; overlapping the horizontal steel bars of the left and right assembled shear walls, binding the vertical structural steel bars and the tie steel bars, and supporting templates at the inner sides of the vertical concrete post-pouring strips of the left and right adjacent wallboards, wherein the outer polyphenyl insulation boards are also used as templates;
seventh step: hoisting and positioning an upper assembled shear wall, butting longitudinal stress steel bars at the top of a lower shear wall with grouting sleeves at the bottom of the upper shear wall, butting polyphenyl insulation board rabbets of an upper wallboard and a lower wallboard with rear mortar-coated strips, pouring grouting materials into the sleeves through reserved holes, binding additional steel wire meshes in the horizontal reserved strips, and trowelling horizontal mortar strips between the upper wallboard and the lower wallboard by adopting high-performance insulation mortar; pouring concrete in the vertical post-pouring strips of the left and right wallboard pieces, binding additional steel wire meshes in the vertical reserved strips, and trowelling the vertical mortar strips between the left and right wallboards by adopting high-performance heat-insulating mortar;
eighth step: and removing the templates to form a combined connection structure of the rear mortar-coating strips of the upper and lower wallboards and the grouting sleeve, and a combined connection structure of the rear mortar-coating strips of the left and right wallboards and the rear cast concrete, painting the outer leaf mortar surface layer of the wallboards with waterproof paint, and painting the reinforced concrete shear wall inside the wallboards with inner wall paint.
The beneficial effects of adopting above-mentioned technical scheme to produce lie in:
1. the steel wire mesh mortar-perlite surface layer overcomes the defect of poor fire resistance of the traditional external heat-insulation wall, and the perlite plate has the advantages of fire resistance and good heat insulation performance, can effectively improve the fire resistance of the external heat-insulation system of the wall, and reduces the fire accident risk of the external wall system of the assembled heat-insulation shear wall. The high-performance mortar layer has good structure, waterproof and weather resistance.
2. The light steel combined truss and bearing steel wire net frame structure can effectively resist downward shearing deformation of the mortar layer under long-term load, can control the shearing deformation to be transmitted downwards at each floor, and solves the technical bottleneck problem that the deformation of the super-thick heat-insulating layer under long-term load is difficult to control. The horizontal tie bars in the light steel combined truss and the bearing steel wire net frame can effectively resist stripping action vertical to the plane of the wallboard, such as wind suction force and the like, and prevent the insulation layer from stripping off the surface of the wallboard. The broken bridge self-tapping screw connecting piece has high strength, good heat insulation performance and convenient installation, avoids the cold bridge problem of the traditional metal connecting piece, and obviously improves the drawknot strength compared with the traditional nonmetallic connecting piece. The light steel sash and the reinforced concrete shear wall have reliable anchoring capability, so that the integrity of the external heat insulation system and the shear wall is enhanced.
3. The steel wire mesh mortar back strip in the combined connection structure enhances the integrity of the wallboard mortar surface layer, solves the problem of joint connection of the traditional heat insulation boards, improves the waterproof performance of the wallboard, and ensures that the wallboard heat insulation structure has good weather resistance. The heat-insulating plate can be used as a template of the post-pouring strip, and is convenient for assembly and construction.
Drawings
FIG. 1 is a schematic view of a front view of a shear wall;
FIG. 2 isbase:Sub>A schematic view of the sectional A-A structure of FIG. 1;
FIG. 3 is a schematic view of the sectional structure B-B in FIG. 1;
FIG. 4 is a schematic view of the C-C cross-sectional structure of FIG. 1;
FIG. 5 is a schematic view of the D-D cross-sectional structure of FIG. 1;
FIG. 6 is a schematic view of the E-E cross-sectional structure of FIG. 1;
FIG. 7 is a schematic cross-sectional view showing the structure and installation state of the combined bridge-cut-off self-tapping screw connecting piece;
FIG. 8 is a schematic cross-sectional view showing the structure and installation state of a horizontal bridge-cut-off self-tapping screw connecting piece;
FIG. 9 is a schematic cross-sectional view of the wire rack in a mounted state of the horizontal web and the diagonal web;
FIG. 10 is a schematic cross-sectional view of a connection structure of a polyphenyl insulation board and an inner mortar layer;
FIG. 11 is a schematic cross-sectional view of the connection state of the horizontal broken-bridge self-tapping screw connection and the combined broken-bridge self-tapping screw connection in the shear wall;
FIG. 12 is a schematic cross-sectional view of a connection structure of upper and lower shear walls;
FIG. 13 is a schematic cross-sectional view of a connection structure of left and right shear walls;
in the figure: 1. shear wall concrete; 2. steel bars are distributed on the shear wall; 3. the shear wall is longitudinally connected with reinforcing steel bars; 4. tying the steel bars; 5. grouting a sleeve; 6. a shear wall mortar cushion layer; 7. light steel sash vertical bars; 8. a light steel sash horizontal rod; 9. light steel sash flange groove; 10. self-tapping screw holes of the light steel frame; 11. an inner mortar layer; 12. an inner steel wire mesh; 13. u-shaped steel wires; 14. polyphenyl thermal insulation board; 15. dovetail grooves of polyphenyl heat-insulating plates; 16. perlite plates; 17. an outer mortar surface layer; 18. an outer steel wire mesh; 19. a horizontal bridge-cut-off self-tapping screw connecting piece; 20. a combined bridge-cutoff self-tapping screw connecting piece; 21. horizontal web wires of the steel wire net rack; 22. the steel wire net rack inclines to the abdominal wire; 23. the strip is smeared after the cement mortar layer of the outer steel wire mesh; 24. cement-based cement; 25. a polyphenyl insulation board rabbet; 26. assembling type concrete floor slabs; 27. grouting; 28. and (5) a concrete post-pouring strip.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
When the shear wall is used for construction, firstly, the arrangement position and the specific size of a light steel combined truss supported steel wire grid mortar-perlite-polyphenyl thermal insulation shear wall are determined according to the design of a building structure, the thickness and the reinforcement of the shear wall are determined, the thickness of a thermal insulation layer is determined according to the climate conditions of a building region, the thickness of an outer reinforcing steel bar grid mortar surface layer and the thickness of a perlite plate are determined according to the requirements of fire resistance, water resistance and weather resistance of the building, the thickness of an inner mortar surface layer is determined according to the stress requirement of an outer thermal insulation system, light steel frame grids are arranged, and the steel wire grid and the light steel combined truss are designed according to the stress requirement; designing and checking stress on a thermal insulation shear wall connection node structure; and drawing a detailed structural construction drawing according to the design scheme of the heat-insulating shear wall and the assembly connection nodes thereof, and manufacturing, transporting and field assembly construction of the prefabricated wallboard. Specific examples are as follows:
the shear wall mainly comprises the following parts:
the steel wire gauze mortar-perlite surface layer is a steel wire gauze mortar layer and a perlite fireproof layer with the thickness of 25mm, the weight of the steel wire gauze mortar-perlite surface layer is only 1/2 of that of a concrete protective layer with the thickness of 50mm, and the steel wire gauze mortar-perlite surface layer has good fire resistance and heat insulation performance, and the high-performance mortar layer with the strength grade not less than M20 has good structure, waterproof performance and weather resistance.
The bearing steel wire net frame consists of an outer steel wire net, an inner steel wire net, a horizontal web wire with the spot welding interval of 200mm and the diameter of 2mm and a web wire with the angle of 45 degrees upwards in an inclined way, wherein the horizontal web wire and the web wire with the angle of 45 degrees upwards penetrate through a perlite layer with the thickness of 25mm and a cement mucilage with the thickness of 5mm are adhered to a thick polyphenyl layer with a dovetail groove, and then extend into the shear wall concrete for horizontal projection for 60mm.
The light steel sash is formed by welding C-shaped steel with vertical and horizontal spacing not more than 800, the C-shaped steel of the light steel sash is in spot welding connection with a steel wire mesh and C-shaped steel respectively by adopting U-shaped steel wires with the diameter of 2mm at the position of the clearance of 10mm with an inner steel wire mesh, the vertical C-shaped steel is in spot welding with steel wires horizontally distributed on the steel wire mesh, the horizontal C-shaped steel is in spot welding with steel wires vertically distributed on the steel wire mesh, and the spacing between the horizontal and vertical spot welding is not more than 200mm.
The light steel combined truss is a truss formed by a steel wire mesh mortar layer, a broken bridge self-tapping screw web member and a lattice light steel string member, and the light steel combined truss is formed by a 25mm thick steel wire mesh mortar layer strip outer string, a light steel lattice vertical C-shaped steel inner string, a countersunk broken bridge long self-tapping screw horizontal web member with the diameter not less than 5mm and an obliquely upward web member with the angle of 45 degrees; the countersunk bridge-cutoff long self-tapping screw penetrates through the countersunk fiber composite connecting piece with the size not smaller than 50, and drills through the perlite-polyphenyl insulating layer, and is connected with the C-shaped light steel in a self-tapping way; the light steel composite truss can effectively resist downward shear deformation of the mortar layer under long-term load, and the shear deformation can be controlled at each floor without downward transmission.
The combined connection structure is characterized in that the upper and lower concrete shear wallboards are assembled by adopting a reinforced sleeve, and the left and right shear walls are assembled by adopting post-cast concrete strips; the upper, lower, left and right light steel combined trusses support the connection between the steel wire net frame mortar-perlite-polyphenyl heat preservation system, the perlite layers are in butt joint, the polyphenyl layers are in tongue-and-groove connection, a 150mm post-plastering mortar strip is reserved between two adjacent steel wire net mortar layers, and the steel wire nets in the post-plastering mortar strip area are in lap joint.
As shown in fig. 1 to 13, the connection relationships of the parts in the connection structure are as follows:
assembled concrete shear wall: the shear wall distribution steel bars 2, the shear wall longitudinal connecting steel bars 3 and the tie steel bars 4 are bound to form a shear wall steel bar cage, and the lower part of the shear wall longitudinal connecting steel bars 3 is connected with a grouting sleeve 5. The light steel lattice is arranged outside the shear wall distribution steel bars 2. And after the shear wall concrete 1 is poured, the assembled grouting sleeve concrete shear wall with the light steel frame lattice is formed.
Light steel sash: the light steel sash is formed by welding a light steel sash vertical rod 7 and a light steel sash horizontal rod 8, wherein the steel sash vertical rod 7 and the light steel sash horizontal rod 8 are all made of thin-wall C-shaped steel, a light steel sash self-tapping screw hole 10 is formed in a light steel sash web plate, and a light steel sash flange groove 9 is formed in a flange.
Inner steel wire mesh mortar layer: the inner mortar layer 11 is poured by an inner steel wire mesh 12, the flanges of U-shaped steel wires 13 are spot welded with the inner steel wire mesh 12, and the web is welded with the light steel frame.
Steel wire frame mortar-pearlite-polyphenyl thermal insulation structure: the steel wire mesh mortar layer is composed of a polyphenyl insulation board 14 with a polyphenyl insulation board dovetail groove 15, a perlite board 16, an outer mortar surface layer 17 and an outer steel wire mesh 18, wherein the polyphenyl insulation board dovetail groove 15 is mechanically meshed with the inner steel wire mesh mortar layer, and the steel wire mesh mortar-perlite-polyphenyl insulation structure is connected with an assembled concrete shear wall through a light steel combined truss and a bearing steel wire mesh.
Bearing steel wire net rack: the steel wire mesh comprises an outer steel wire mesh 18, an inner steel wire mesh 12, spot welding steel wire mesh frame horizontal web wires 21 and steel wire mesh frame inclined web wires 22, wherein the steel wire mesh frame horizontal web wires 21 and the steel wire mesh frame inclined web wires 22 penetrate through a perlite plate 16 and a polyphenyl insulation plate 14 and then extend into shear wall concrete. Thereby realizing the drawknot of the steel wire net frame mortar-perlite-polyphenyl thermal insulation structure and the concrete shear wall.
Light steel composite truss: the light steel combined truss consists of a steel wire mesh mortar layer strip outer chord formed by the outer mortar layer 17 and the outer steel wire mesh 18, an inner chord of a light steel sash vertical rod 7, a web member of a horizontal bridge-cut-off self-tapping screw connecting piece 19 and a chord member of a combined bridge-cut-off self-tapping screw connecting piece 20; the bridge-cutoff self-tapping screw connecting piece drills through the perlite plate 16 and the polyphenyl insulation plate 14 to connect the light steel sash vertical rod 7 and the light steel sash horizontal rod 8 in a self-tapping mode.
The combined connection structure comprises: the shear wall comprises upper and lower shear wall distribution steel bars 2, grouting sleeve 5, and a shear wall connection structure formed by paving a shear wall mortar cushion layer 6 and left and right shear wall concrete post-pouring strips 28, wherein a polyphenyl insulation board tongue-and-groove 25 is coated with an insulation layer connection structure formed by cement-based adhesive cement 24, and a connection structure of an outer steel wire mesh 18 for connecting upper, lower, left and right wallboards by an outer steel wire mesh cement mortar layer post-pouring strip 23.
The shear wall concrete 1 is an assembled reinforced concrete shear wall with the width of 3900mm, the height of 2700mm and the thickness of 250 mm. The shear wall distributed steel bars 2 adopt double-row steel bar arrangement: the steel bars distributed horizontally are phi 10mmX200mm, the steel bars distributed vertically are phi 10mmX200mm, the thickness of the net protective layer is 20mm, and the tie steel bars 4 with phi 6mm are arranged at intervals of 400 mm; the grouting sleeves 5 are assembled and connected, 16 grouting sleeves 5 are arranged at the bottom interval 600 of the wallboard, and 16 phi 16mm steel bars which are symmetrically arranged are adopted as longitudinal connecting steel bars 3 of the upper shear wall and the lower shear wall. The vertical distribution steel bars in the shear wall distribution steel bars 2 do not protrude from the wall plates, and the top of the longitudinal connection steel bars 3 of the shear wall protrudes from the wall plates by 240mm and is connected with the assembled concrete floor 26 and the upper wall plates. And in the range of the grouting sleeve 5 at the bottom of the wallboard and 300mm above the grouting sleeve, the total encryption height is 500mm, phi 10mmX100mm horizontal distribution steel bars of the distributed steel bars 2 of the encrypted shear wall are protruded from the left end and the right end of the wallboard, 280mm of the horizontal distribution steel bars are overlapped with the adjacent wallboard, and then the concrete post-pouring strips 28 are poured.
The light steel sash vertical rods 7 and the light steel sash horizontal rods 8 are formed by welding C-shaped steel with vertical and horizontal intervals not more than 800, the light steel sash is respectively spot-welded at a position with a clear distance of 10mm from the inner steel wire mesh 12 by adopting U-shaped steel wires 13 with diameters of 2mm so as to connect the steel wire mesh and the light steel sash, the light steel sash vertical rods 7 and the inner steel wire mesh 12 are horizontally distributed and are spot-welded, the light steel sash horizontal rods 8 and the inner steel wire mesh 12 are vertically distributed and are spot-welded, and the interval between the horizontal and vertical spot-welds is not more than 200mm; the light steel sash has a section with a height of 70mm, a width of 50mm and a plate thickness of not less than 2mm, and is provided with a light steel sash flange groove 9 with a width of 140mm and a height of 60mm, so that a convex steel section with a clear distance of 140mm, a height of 60mm and a width of 60mm is formed; the light steel frame lattice vertical rods 7 are anchored into the shear wall concrete 1 from positions, between the horizontal and vertical distributed steel bars of the shear wall, with a clear distance of 10mm from the outside distributed steel bars, the clear distance between the inner steel wire mesh 12 and the outside distributed steel bars of the shear wall is 20mm, the light steel frame lattice with the protruding steel segments after the shear wall concrete is poured is 10mm, the light steel frame lattice with the protruding steel segments is embedded into the shear wall concrete with a high section of 10mm, and the protruding steel segments are anchored in the shear wall concrete with a clear distance of 60mm. In order to facilitate the self-tapping of the C-shaped steel web plate of the light steel sash between the self-tapping screw connection, round holes smaller than the diameter of the self-tapping screw are formed in the web plates of the light steel sash vertical rods 7 and the light steel sash horizontal rods 8 so as to facilitate the self-tapping screw to pass through.
The inner mortar layer 11 and the inner steel wire mesh 12 are mortar layers of the polyphenyl insulation board dovetail groove 15 and the shear wall concrete 1, the net distance between the inner steel wire mesh 12 and the polyphenyl insulation board 14 with the dovetail groove is 10mm, and the gap between the inner steel wire mesh 12 and the polyphenyl insulation board dovetail groove 15 is smoothed by adopting 14mm thick mortar with the strength not lower than C20; the U-shaped steel wire 13 is a connecting structure of the inner steel wire mesh 12 and the light steel sash, the bending flange of the U-shaped steel wire is in spot welding with the steel wire of the inner steel wire mesh 12, and the web member is welded with the light steel sash vertical rod 7 and the light steel sash horizontal rod 8.
The polyphenyl thermal insulation board 14 is provided with a dovetail groove 15 at the joint of the inner side and the inner mortar layer 11, the thickness is 200mm, and the thickness of the thermal insulation board can be adjusted according to the climate conditions of the construction region.
The perlite board 16 is a fire-resistant layer of wallboard and has a thickness of 25mm.
The outer mortar surface layer 17 is a 25mmm thick mortar layer with the outer strength of the wallboard not lower than C20, an outer steel wire mesh 18 with the diameter of 2mm and the interval of 50mm is arranged in the outer mortar surface layer 17, and the mortar net protection layer of the outer steel wire mesh 18 is 10mm.
The horizontal broken bridge self-tapping screw connecting piece 19 and the combined broken bridge self-tapping screw connecting piece 20 are web members of the light steel combined truss and are connecting pieces for connecting the outer chord of the 25mm thick steel wire mesh mortar layer strip with the inner chord of the light steel frame. The horizontal broken bridge self-tapping screw connecting piece 19 and the combined broken bridge self-tapping screw connecting piece 20 sink into a countersunk fiber composite connecting piece with the size not smaller than 50, drill through the perlite-polyphenyl insulating layer and connect the light steel frame lattice by self-tapping. The countersunk head fiber composite connecting piece is a connecting piece formed by one step, wherein the connecting piece is a square plate with the thickness of 3 x60, a square plate with the thickness of 4 x46, a hollow round rod with the outer diameter of 14mm and the inner diameter of 10mm and the length of 50mm in the middle, and a hollow round rod with the outer diameter of 14mm and the inner diameter of 6mm and the length of 20mm in the middle. The angle between the square plate of the countersunk fiber composite connecting piece of the horizontal bridge-cut-off self-tapping screw connecting piece 19 and the hollow round bar is 90 degrees, and the angle between the rectangular plate of the countersunk fiber composite connecting piece of the combined bridge-cut-off self-tapping screw connecting piece 20 and the hollow round bar is divided into 90 degrees penetrating through the horizontal long self-tapping screw and 45 degrees penetrating through the inclined upward long self-tapping screw; the diameter of the screw cap of the steel self-tapping screw is 10mm, the diameter of the screw rod is 6mm, and the screw rod is threaded. Horizontal bridge-cutoff self-tapping screw connecting pieces 19 are arranged at the top and the bottom of the light steel sash vertical rods 7, and a combined bridge-cutoff self-tapping screw connecting piece 20 is arranged in the middle. The horizontal broken bridge self-tapping screw connecting pieces 19 are arranged on the light steel sash horizontal rods 8, and the distance is not more than 800mm.
The steel wire frame horizontal web wires 21 and the steel wire frame oblique web wires 22 are used for connecting the inner steel wire frame 12 and the outer steel wire frame 18 to support steel bar wires, the steel wire frame consists of the steel wire frame horizontal web wires 21 with the diameter of 2mm and the steel wire frame oblique web wires 22 with the 45-degree oblique upward direction, which are 200mm in spot welding distance between the inner steel wire frame 12 and the outer steel wire frame 18, and the steel wire frame horizontal web wires 21 and the steel wire frame oblique web wires 22 penetrate through the 25-mm thick perlite plate 16 and the 24-mm thick inner mortar layer 11 to be adhered with the 200-thick polyphenyl insulation plate 14 with the dovetail grooves and then extend into the shear wall concrete 1 for 60mm in horizontal projection.
The back of the outer steel wire mesh cement mortar layer is coated with a strip 23 which is a connecting structure of the upper, lower, left and right outer steel wire mesh mortar layers of the wallboard. The prefabricated wallboard is smeared after upper and lower and left and right tip reservation 75mm wide outer mortar surface course, and wallboard hoist and mount location back, and upper and lower or left and right adjacent wallboard outer wire net mortar layer hookup location is smeared after 150mm wide, embeds 50mm interval, 2mm diameter reinforcing steel wire net to smear high performance heat preservation mortar, smear strip 23 behind the outer wire net cement mortar layer has guaranteed wallboard connected node's integrality, and has good waterproof nature improved the weather resistance of wallboard.
The cement-based adhesive cement 24 is an inorganic bonding material smeared at the rabbet 25 of the polyphenyl thermal insulation board at the connecting position of the wall boards, and can enhance the integrity and the waterproof performance of the rabbet 25 of the polyphenyl thermal insulation board.
The assembled concrete floor 26 is a precast concrete floor between the upper assembled shear wall and the lower assembled shear wall, and is connected with the shear wall concrete 1 through the longitudinal connecting steel bars 3 of the shear wall.
The concrete post-pouring strip 28 is in an assembly connection structure of left and right adjacent wallboards, 280mm of the left and right ends of the horizontally distributed reinforcing steel bars protruding out of the wallboards are overlapped with the adjacent wallboards, the vertical structural steel bars and the tie reinforcing steel bars are bound, and then the concrete post-pouring strip 28 is poured, so that the assembly connection of the left and right wallboards is completed.
The construction method and the construction process of the shear wall are as follows:
firstly, preparing a thermal insulation shear wall, which comprises the following steps:
the first step: processing a light steel sash vertical rod and a light steel sash horizontal rod in a factory, welding the processed C-shaped steel and the light steel sash, binding a shear wall reinforcement cage, installing a grouting sleeve 5, purchasing a polyphenyl insulation board and a perlite board, and cutting and assembling the polyphenyl insulation board and the perlite board into required sizes; preparing an inner steel wire mesh, an outer steel wire mesh frame abdominal wire, a horizontal broken bridge self-tapping screw connecting piece and a combined broken bridge self-tapping screw connecting piece;
and a second step of: the method comprises the steps of mounting and positioning a light steel sash on a shear wall reinforcement cage, connecting an inner steel wire mesh on the light steel sash through U-shaped steel wires, spacing the thickness of an inner mortar layer on the surfaces of dovetail grooves of the light steel sash and a polyphenyl thermal insulation board through engineering plastic cushion blocks, and positioning the polyphenyl thermal insulation board, the perlite board and an outer steel wire mesh;
and a third step of: sequentially penetrating the horizontal web wires of the steel wire mesh frame and the oblique web wires of the steel wire mesh frame through a perlite plate and a polyphenyl heat insulation plate, spot-welding two ends of the web wires of the steel wire mesh frame with an inner steel wire mesh and an outer steel wire mesh to form the steel wire mesh frame, and extending into the shear wall for a certain anchoring distance; the horizontal bridge-cut-off self-tapping screw connecting piece and the long self-tapping screw of the combined bridge-cut-off self-tapping screw connecting piece sequentially penetrate through the perlite plate and the polyphenyl insulation plate, are connected with the light steel sash in a self-tapping mode, and extend into the shear wall for a certain anchoring distance;
fourth step: pouring the inner and outer steel wire mesh mortar surface layers, and curing;
fifth step: taking a steel wire frame mortar-perlite-polyphenyl thermal insulation structure as a bottom die, pouring shear wall concrete, and curing;
and then, assembling and constructing the prepared shear wall, wherein the steps are as follows:
sixth step: mounting the assembled concrete floor slab on the upper part of the lower concrete shear wall, and paving a mortar cushion layer; overlapping the horizontal steel bars of the left and right assembled shear walls, binding the vertical structural steel bars and the tie steel bars, and supporting templates at the inner sides of the vertical concrete post-pouring strips of the left and right adjacent wallboards, wherein the outer polyphenyl insulation boards are also used as templates;
seventh step: hoisting and positioning an upper assembled shear wall, butting longitudinal stress steel bars at the top of a lower shear wall with grouting sleeves at the bottom of the upper shear wall, butting polyphenyl insulation board rabbets of an upper wallboard and a lower wallboard with rear mortar-coated strips, pouring grouting materials into the sleeves through reserved holes, binding additional steel wire meshes in the horizontal reserved strips, and trowelling horizontal mortar strips between the upper wallboard and the lower wallboard by adopting high-performance insulation mortar; pouring concrete in the vertical post-pouring strips of the left and right wallboard pieces, binding additional steel wire meshes in the vertical reserved strips, and trowelling the vertical mortar strips between the left and right wallboards by adopting high-performance heat-insulating mortar;
eighth step: and removing the templates to form a combined connection structure of the rear mortar-coating strips of the upper and lower wallboards and the grouting sleeve, and a combined connection structure of the rear mortar-coating strips of the left and right wallboards and the rear cast concrete, painting the outer leaf mortar surface layer of the wallboards with waterproof paint, and painting the reinforced concrete shear wall inside the wallboards with inner wall paint.
The present utility model is not limited to the above-mentioned embodiments, and any person skilled in the art, based on the technical solution of the present utility model and the inventive concept thereof, can be replaced or changed within the scope of the present utility model.
Claims (8)
1. The assembled light steel combined steel wire net rack mortar-perlite-polyphenyl composite shear wall is characterized by comprising:
the assembled concrete shear wall is formed by binding distributed steel bars of the shear wall, longitudinal connecting steel bars of the shear wall and tie steel bars to form a steel bar cage of the shear wall, and then pouring concrete of the shear wall, wherein the lower part of the longitudinal connecting steel bars of the shear wall is connected with a grouting sleeve;
the light steel frame is arranged on the outer side of the shear wall distributed steel bars and is formed by welding light steel frame vertical rods and light steel frame horizontal rods; the light steel sash vertical rods and the light steel sash horizontal rods are all made of thin-wall C-shaped steel, light steel sash self-tapping screw holes are formed in light steel sash webs, and light steel sash flange grooves are formed in flanges;
the inner steel wire mesh mortar layer is formed by pouring an inner mortar layer through an inner steel wire mesh;
the U-shaped steel wire, the flange and the inner steel wire mesh are in spot welding, and the belly is in welded connection with the light steel sash;
the steel wire mesh mortar-perlite-polyphenyl thermal insulation structure consists of a polyphenyl thermal insulation board with a polyphenyl thermal insulation board dovetail groove, a perlite board and a steel wire mesh mortar surface layer, wherein the steel wire mesh mortar surface layer comprises an outer mortar surface layer and an outer steel wire mesh, and the polyphenyl thermal insulation board dovetail groove is mechanically meshed with the inner steel wire mesh mortar layer;
the light steel combined truss consists of an outer chord of a steel wire mesh mortar layer strip formed by an outer mortar surface layer and an outer steel wire mesh, an inner chord of a light steel frame lattice vertical rod, a web member of a horizontal bridge-cut-off self-tapping screw connecting piece and a chord member of a combined bridge-cut-off self-tapping screw connecting piece; the bridge-cut-off self-tapping screw connecting piece drills through the perlite plate and the polyphenyl insulation plate and then self-taps and connects the light steel sash vertical rod and the light steel sash horizontal rod;
the bearing steel wire net frame consists of the outer steel wire net, the inner steel wire net spot welding steel wire net frame horizontal web wires and the steel wire net oblique web wires, and the steel wire net frame horizontal web wires and the steel wire net oblique web wires penetrate through the perlite plates and the polyphenyl heat insulation plates and then extend into shear wall concrete; the steel wire net rack mortar-perlite-polyphenyl thermal insulation structure is connected with the assembled concrete shear wall through the light steel combined truss and the bearing steel wire net rack;
the combined connection structure comprises a shear wall connection structure formed by shear wall distribution steel bars in an upper shear wall and a lower shear wall, grouting materials in the grouting sleeve, a shear wall mortar cushion layer and concrete post-pouring strips on a left shear wall and a right shear wall, and also comprises a heat preservation connection structure formed by coating cement-based adhesive cement on a tongue-and-groove of a polyphenyl heat preservation plate and a connection structure of an outer steel wire mesh of an upper wall plate, a lower wall plate, a left wall plate and a right wall plate, wherein the upper wall is connected with the lower wall; the inner mortar layer and the inner steel wire mesh are mortar layers of a polyphenyl insulation board dovetail groove and a concrete shear wall, the net distance between the inner steel wire mesh and the polyphenyl insulation board with the dovetail groove is 10mm, and the mortar with the pitting surface is adopted to smooth the gap between the inner steel wire mesh and the polyphenyl insulation board dovetail groove.
2. The fabricated light steel composite wire grid mortar-perlite-polyphenyl composite shear wall according to claim 1, wherein the dimensions of the concrete shear wall are 3900mm wide, 2700mm high and 250mm thick; the shear wall distributed steel bars adopt double rows of reinforced bars, the diameters of the horizontal distributed steel bars are 10mm, the distance is 200mm, the diameters of the vertical distributed steel bars are 10mm, the distance is 200mm, the thickness of the net protective layer is 20mm, and the tie steel bars with the diameters of 6mm are arranged at intervals of 400 mm.
3. The assembled light steel combined steel wire grid mortar-perlite-polyphenyl composite shear wall according to claim 1, wherein the light steel sash vertical rods and the light steel sash horizontal rods are formed by welding C-shaped steel with vertical and horizontal intervals not more than 800; the light steel sash is respectively spot-welded at a position with a clearance of 10mm from the inner steel wire mesh by adopting U-shaped steel wires with the diameter of 2mm so as to connect the steel wire mesh and the light steel sash, the light steel sash vertical rods are spot-welded with the horizontally distributed steel wires of the inner steel wire mesh, the light steel sash horizontal rods are spot-welded with the vertically distributed steel wires of the inner steel wire mesh, and the distance between the horizontal and vertical spot-welding is not more than 200mm; the light steel sash is provided with a light steel sash flange groove with the width of 140mm and the height of 60mm on the light steel sash, wherein the section of the light steel sash is 70mm, the width of the light steel sash is 50mm, the plate thickness of the light steel sash is more than or equal to 2mm, and the light steel sash flange groove with the width of 140mm and the height of 60mm is formed, so that a convex steel section with the clear distance of 140mm, the height of 60mm and the width of 60mm is formed; the method comprises the steps that protruding steel sections on vertical rods of a light steel frame are anchored into a concrete shear wall from positions, between horizontal and vertical distributed steel bars of the shear wall, of which the clear distance is 10mm, the clear distance between an inner steel wire mesh and the steel bars distributed on the outer side of the shear wall is 20mm, the light steel frame with the protruding steel sections after the concrete of the shear wall is poured is 10mm, the light steel frame with the protruding steel sections is embedded into the concrete of the shear wall in a through high section, and the protruding steel sections are anchored in the concrete of the shear wall in a 60mm manner; round holes smaller than the diameter of the tapping screw are formed in the C-shaped web plates of the vertical rods and the horizontal rods of the light steel frame.
4. The assembled light steel combined steel wire net rack mortar-perlite-polyphenyl composite shear wall according to claim 1, wherein the U-shaped steel wires are of a connection structure of the inner steel wire net and the light steel frame lattice, the bending flanges of the U-shaped steel wires are in spot welding with the steel wires of the inner steel wire net, and web members are in welded connection with the light steel frame lattice vertical rods and the light steel frame lattice horizontal rods; the polyphenyl thermal insulation board is provided with a dovetail groove at the joint of the inner side and the inner mortar layer, and the thickness is 200mm.
5. The fabricated light steel composite wire grid mortar-perlite-polyphenyl composite shear wall according to claim 1, wherein the horizontal bridge-cutoff self-tapping screw connecting piece and the composite bridge-cutoff self-tapping screw connecting piece are web members of a light steel composite truss and are connecting pieces for connecting an outer chord of a 25mm thick steel wire grid mortar layer strip and an inner chord of a light steel frame.
6. The fabricated light steel combined steel wire frame mortar-perlite-polyphenyl composite shear wall according to claim 1, wherein the steel wire frame horizontal web wires and the steel wire frame oblique web wires are supporting reinforcing steel wires for connecting an inner steel wire frame and an outer steel wire frame.
7. The assembled light steel combined steel wire mesh frame mortar-perlite-polyphenyl composite shear wall according to claim 1, wherein the rear plastering strips of the outer steel wire mesh cement mortar layer are of a wallboard upper and lower and left and right outer steel wire mesh mortar layer connecting structure; the upper end, the lower end, the left end and the right end of the prefabricated wallboard are reserved with outer mortar surface layers with the width of 75mm, and after the wallboard is hoisted and positioned, the connecting positions of the outer steel wire mesh mortar layers of the upper and the lower or the left and the right adjacent wallboards are 150mm wide, and then the outer mortar surface layers are smeared.
8. The assembled light steel combined steel wire net rack mortar-perlite-polyphenyl composite shear wall according to claim 1, wherein the concrete post-cast strip is of an assembly connection structure of left and right adjacent wallboards, the 280mm of the left and right ends of the horizontally distributed steel bars protruding out of the wallboards are overlapped with the adjacent wallboards, and the concrete post-cast strip is cast after binding vertical structural bars and tie steel bars, so that the assembly connection of the left and right wallboards is realized.
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| CN202223507723.XU CN218894248U (en) | 2022-12-27 | 2022-12-27 | Assembled light steel combined steel wire net rack mortar-perlite-polyphenyl composite shear wall |
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