CN115928909B - Short-limb shear wall assembled light steel combined truss supported steel wire net rack mortar-perlite-polyphenyl composite enclosure wall and manufacturing method thereof - Google Patents
Short-limb shear wall assembled light steel combined truss supported steel wire net rack mortar-perlite-polyphenyl composite enclosure wall and manufacturing method thereof Download PDFInfo
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Abstract
本发明公开了短肢剪力墙装配式轻钢组合桁架承托钢丝网架砂浆‑珍珠岩‑聚苯复合围护墙及作法，涉及装配式混凝土建筑结构工程技术领域。主要由钢丝网砂浆‑珍珠岩面层构造、承重钢丝网架、轻钢组合桁架以及装配式短肢混凝土剪力墙组成。本发明克服了短肢剪力墙与窗洞之间的墙段填充轻质墙板重量相对大、保温相对差的弊端，解决了复合填充墙内叶砂浆层内细而密钢筋网与连梁及短肢剪力墙的连接问题，具有良好的受力性能；同时，可有效抵抗长期荷载下窗边框周围砂浆层向下的剪切变形，并将短肢剪力墙外保温构造的重力荷载控制在本层并不向下传递，增强了墙板砂浆面层的整体性，解决了传统保温板拼缝连接问题，提高了墙板防水性能。
The present invention discloses a short-limb shear wall assembled light steel composite truss supporting a wire mesh mortar-perlite-polystyrene composite enclosure wall and a method thereof, and relates to the technical field of assembled concrete building structure engineering. It is mainly composed of a wire mesh mortar-perlite surface layer structure, a load-bearing wire mesh, a light steel composite truss, and an assembled short-limb concrete shear wall. The present invention overcomes the drawbacks of the relatively large weight and relatively poor thermal insulation of the lightweight wall panels filled in the wall section between the short-limb shear wall and the window opening, solves the connection problem between the fine and dense steel mesh in the mortar layer of the inner leaf of the composite filling wall and the connecting beam and the short-limb shear wall, and has good force-bearing performance; at the same time, it can effectively resist the downward shear deformation of the mortar layer around the window frame under long-term load, and control the gravity load of the external insulation structure of the short-limb shear wall in this layer and does not transmit it downward, thereby enhancing the integrity of the wall panel mortar surface layer, solving the problem of joint connection of traditional insulation panels, and improving the waterproof performance of the wall panels.
Description
Technical Field
The invention belongs to the technical field of assembled concrete building structure engineering, and particularly relates to a short-leg shear wall assembled light steel combined truss supported steel wire net rack mortar-perlite-polyphenyl composite enclosure wall and a manufacturing method thereof.
Background
At present, the fabricated concrete structure in multi-storey and high-rise residential buildings is widely applied, but the innovative development of the heat-preservation energy-saving prefabricated part components matched with the fabricated concrete structure is lagged, and the problems of low thermal performance, low integration degree and the like of the enclosure structure of the building with ultra-low energy consumption and near zero energy consumption still exist. Therefore, the multifunctional integrated assembled short-leg shear wall outer wall system is developed, and the assembled composite outer wall integrating decoration, fire resistance, water resistance, heat insulation and weather resistance is further researched and developed, so that the multifunctional integrated assembled short-leg shear wall outer wall system is a great demand for the development of national assembled green buildings.
The short-limb shear wall is a double-limb or multi-limb anti-seismic wall with the wall section width-to-thickness ratio of 4-8, is suitable for multi-storey and high-storey buildings, has more reasonable rigidity and internal force distribution compared with a frame structure, and has better structural arrangement flexibility and better economical efficiency compared with the traditional long-limb shear wall with H/B of > 8.
Bottleneck problems in the prior art: 1, the traditional external thermal insulation structure of the external wall is easy to drop under the wind load and the long-term load effect, and has poor weather resistance, in recent years, the safety accidents caused by the falling of the external thermal insulation layer of the external wall frequently occur, the accidents are concentrated to occur that the thermal insulation mortar falls off and the inorganic lightweight aggregate fireproof thermal insulation board mainly bonded is fallen off, once the external thermal insulation layer of the external wall is empty and falls off, the external decorative layer falls off from the high altitude together with a large area, and the surrounding pedestrians or objects are extremely easy to damage; 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 and the hole, the problem of water leakage at the seam position is serious, and the heat-insulating structure is easy to loosen and fall off; and 6, the wall section between the traditional short-leg shear wall and the window hole is filled with a light wallboard, the weight is large, the heat insulation performance is poor, the traditional filling wall and the concrete structure main body deform uncoordinated, the stress performance of a connecting node is weak, and the filling wallboard is seriously damaged under the earthquake action.
Disclosure of Invention
The invention aims to solve the technical problem of providing a short-limb shear wall assembled light steel combined truss supported steel wire net rack mortar-perlite-polyphenyl composite enclosure wall and a manufacturing method thereof, which are suitable for the ultra-low energy consumption house with a window hole outer wall of a concrete short-limb shear wall structure, and have the advantages of light weight and good fire resistance and heat insulation performance.
In order to solve the technical problems, the invention adopts the following technical scheme:
The short-leg shear wall assembled light steel combined truss supported steel wire net rack mortar-perlite-polyphenyl composite enclosure wall comprises:
The assembled concrete short-limb shear wall is formed by binding short-limb shear walls, short-limb shear wall distribution steel bars and short-limb shear wall vertical connection steel bars through tie steel bars, wherein grouting sleeves are connected to the lower parts of the short-limb shear wall vertical connection steel bars, and the parts of the short-limb shear wall vertical connection steel bars extending out of the tops of the wallboards are connected with an assembled concrete floor slab and a grouting sleeve on the upper layer;
The connecting beams comprise an upper connecting beam and a lower connecting beam, and the upper connecting beam positioned at the upper side of the window hole and the lower connecting beam positioned at the lower side of the window hole are formed by casting concrete through connecting beam reinforcement cages bound in the upper connecting beam and connecting beam vertical connecting reinforcement bars at the inner side of the reinforcement cages;
The light steel sash is arranged at the outer side of the short-leg shear wall distributed steel bars and is formed by welding light steel sash vertical keels and light steel sash transverse keels, a web plate of the light steel sash is provided with a light steel sash self-tapping screw hole, and a flange is provided with a light steel sash flange groove;
the inner leaf steel wire mesh mortar layer is formed by pouring an inner She Shajiang layer of an inner leaf steel wire mesh, the flanges of the U-shaped steel wires are spot-welded with the inner leaf steel wire mesh, and the web members are welded with the light steel frame;
The steel wire frame mortar-perlite-polyphenyl thermal insulation structure consists of a polyphenyl thermal insulation board with a polyphenyl thermal insulation board dovetail groove, a perlite board, a steel wire net mortar surface layer consisting of an outer leaf mortar layer and an outer leaf steel wire net, wherein the polyphenyl thermal insulation board dovetail groove is mechanically meshed with an inner She Shajiang connecting layer, and the steel wire frame mortar-perlite-polyphenyl thermal insulation structure is connected with an assembled concrete short-limb shear wall, an upper connecting beam and a lower connecting beam through a light steel combined truss and a bearing steel wire frame;
the bearing steel wire net frame consists of an outer leaf steel wire net, an inner leaf steel wire net, spot welding steel wire net frame horizontal web wires and steel wire net frame oblique web wires, wherein the steel wire net frame horizontal web wires and the steel wire net frame oblique web wires penetrate through the perlite plates and the polyphenyl insulation plates and then extend into the shear wall concrete, so that the steel wire net frame mortar-perlite-polyphenyl insulation structure and the concrete shear wall are tied;
The light steel combined truss is composed of a light steel combined truss, a light steel sash vertical keel, an inner chord of a light steel sash transverse keel, a web member of a horizontal countersunk head bridge-breaking long self-tapping screw connecting piece and a chord member of a combined countersunk head bridge-breaking long self-tapping screw connecting piece, wherein the light steel combined truss is composed of an outer leaf mortar layer and an outer leaf steel wire mesh; the bridge-cutoff self-tapping screw connecting piece drills through the perlite plate and the polyphenyl insulation plate and connects the light steel sash vertical keel and the light steel sash transverse keel in a self-tapping way;
the light steel frame steel wire net frame inner and outer leaf mortar surface layer sandwich perlite-polyphenyl thermal insulation composite wall is composed of an outer leaf steel wire net mortar surface layer composed of composite wall mortar outer leaves and composite wall outer leaf steel wire nets, an inner leaf steel bar net mortar layer composed of composite wall concrete mortar inner leaves and concrete mortar inner leaf steel bar nets, and a composite wall perlite plate and a composite wall polyphenyl thermal insulation plate in a sandwich layer, wherein one end of the steel wire net frame horizontal web wire and the steel wire net frame oblique web wire in the composite wall sequentially passes through the perlite plate and the polyphenyl thermal insulation plate after being welded with the composite wall outer leaf steel wire nets, and the other end of the steel wire net frame horizontal web wire and the steel wire net frame oblique web wire are welded with the concrete mortar inner leaf steel bar nets so as to effectively tie each surface layer of the composite wall;
The strip is smeared behind the outer leaf steel wire mesh cement mortar layer, which is a connecting structure of the upper and lower and left and right outer steel wire mesh mortar layers of the outer thermal insulation layer of the short-leg shear wall board, and is also a connecting structure of the outer leaf of the composite filled wall steel wire mesh mortar and the outer thermal insulation layer of the short-leg shear wall board; the external mortar surface layer with the width of She Yuliu mm is coated with the strip after the steel wire mesh mortar layer is coated with the external mortar surface layer, after the wallboards are butted, the connection position of the external steel wire mesh mortar layer is 150mm wide, the external steel wire mesh mortar layer is coated with the mortar layer, the reinforced steel wire mesh with the width of 150mm, the spacing of 50mm and the diameter of 2mm is built in, the strip is coated with high-performance heat-insulating mortar, the integrity of wallboard connection nodes is guaranteed by coating the strip after the external leaf steel wire mesh cement mortar layer, and the wallboard has good waterproof property and weather resistance;
The self-tapping screw block connection structure of the window opening comprises a built-in mortar strip steel mesh of a window frame mortar strip, wherein the mortar strip steel mesh is lapped with an inner leaf steel mesh and an outer leaf steel mesh, a force transmission steel plate is welded on the mortar strip steel mesh and is in butt joint with C-shaped steel of a window frame light steel sash, the self-tapping screw penetrates through the connecting steel plate to self-tap the mortar strip force transmission steel plate and the window frame light steel sash, and finally mortar trowelling mortar strip grooves are adopted;
The combined connection structure comprises upper and lower short-leg shear wall distributed steel bars and grouting material connection structures in the grouting sleeve; a shear wall connection structure formed by the short-limb shear wall and the beam-connecting concrete post-pouring strip; the polyphenyl thermal insulation board rabbet is coated with a thermal insulation layer connecting structure formed by cement-based mucilage; the connecting structure of the outer leaf steel wire mesh cement mortar layer of the upper, lower, left and right wallboards is formed by connecting the rear plastering strips of the outer leaf steel wire mesh cement mortar layer of the shear wall; the strip structure is smeared after the steel wire mesh cement mortar layer of the outer leaves of the composite wall and the shear wall; composite wall self-tapping screw assembly connection nodes of reinforced net concrete mortar inner leaves of composite filling walls and upper and lower connecting beams;
The concrete post-pouring strip is an assembly connection structure of the short-limb shear wall and the connecting beam, the horizontal distributed steel bars of the short-limb shear wall protrude from the left end and the right end of the wallboard by 280mm, overlap with the longitudinal bars of the adjacent connecting beam, and are poured after binding the vertical structural bars and the tie steel bars, so that the assembly connection of the left wallboard and the right wallboard is completed.
Preferably, the short-limb shear wall is an assembled reinforced concrete L-shaped short-limb shear wall, the thickness of the wallboard is 250mm, and the width of a single limb is 1250mm; the short-limb shear wall distributed steel bars adopt double rows of reinforced bars, the diameter of the horizontally distributed steel bars is 10mm, the distance is 200mm, 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; the grouting sleeve is adopted for assembly connection, and symmetrically arranged steel bars with the diameter of 16mm are adopted as vertical connecting steel bars of the upper short-leg shear wall and the lower short-leg shear wall; the top of the short shear wall longitudinal connecting steel bar protrudes 240mm from the wallboard to be connected with the floor slab and the upper wallboard; and (3) pouring a concrete post-pouring strip after 280mm of the end part of the short-limb shear wall, where the horizontally-distributed steel bars protrude out of the wallboard, overlap with the longitudinal steel bars of the adjacent connecting beam.
Preferably, the upper connecting beam and the lower connecting beam are of connecting structures between two wall limbs and are respectively positioned at the upper part and the lower part of the window hole, the section height of the upper connecting beam is the distance from the upper edge of the window hole to the top of the wallboard concrete, the height of the lower connecting beam is 450mm, and the section width is equal to the thickness of the wall body; a phi 10mm longitudinal steel bar and a phi 8mm stirrup are arranged in the connecting beam; the longitudinal steel bars and the stirrups form a beam-connected steel bar cage; the vertical connecting steel bars of the connecting beam of phi 16 are arranged between the vertical connecting steel bars of the connecting beam, and the upper ends of the vertical connecting steel bars in the upper connecting beam of the lower wallboard are connected with grouting sleeves at the bottoms of the vertical connecting steel bars of the lower connecting beam of the upper wallboard; light steel frame lattice is arranged in the upper and lower connecting beams.
Preferably, the light steel sash vertical keels and the light steel sash horizontal keels 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 an inner leaf steel wire mesh by adopting U-shaped steel wires with diameters of 2mm so as to connect the steel wire mesh and the light steel sash, and the horizontal and vertical spot-welded intervals are not more than 200mm; the C-shaped steel section of the keel has the height of 70mm, the width of 50mm and the plate thickness of not less than 2mm, and the light steel sash has the width of 140mm and the height of 60mm, so that a convex steel section with the clear distance of 140mm, the height of 60mm and the width of 60mm is formed; the light steel frame grid vertical keel steel section is anchored into the short-limb shear wall and the connecting beam from the position with the clearance distance of 10mm between the horizontal steel bars and the vertical steel bars of the shear wall and the connecting beam; the light steel frame with the protruding steel section is embedded into the shear wall concrete for 10mm in a10 mm through high section after the shear wall concrete is poured, and the protruding steel section is anchored in the shear wall concrete for 60mm; in order to facilitate the connection of the self-tapping screw with the web plate of the light steel frame keel, round holes smaller than the diameter of the self-tapping screw are formed in the web plates of the light steel frame vertical keel and the light steel frame transverse keel so as to facilitate the penetration of the self-tapping screw.
Preferably, the inner She Shajiang layers and the inner leaf steel wire meshes are mortar layers between the dovetail grooves of the polyphenyl thermal insulation board and the short-limb shear wall, the upper connecting beam and the lower connecting beam, the net distance between the inner leaf steel wire meshes and the polyphenyl thermal insulation board with the dovetail grooves is 10mm, and the gaps between the inner leaf steel wire meshes and the dovetail grooves of the polyphenyl thermal insulation board are smoothed by adopting 14mm thick mortar with the pitting surface with the strength not lower than C20; the U-shaped steel wire is a connection structure of an inner leaf steel wire mesh and a light steel sash, the bending flange of the U-shaped steel wire is in spot welding with the inner leaf steel wire mesh steel wire, and the web member is welded with the light steel sash vertical keel and the light steel sash transverse keel.
Preferably, the window frame mortar strip is a window frame edge sealing concrete mortar strip for connecting an inner She Shajiang layer with an outer leaf mortar layer, the thickness of the window frame edge sealing concrete mortar strip is 50mm, mortar strip reinforcing steel bars with the diameter of 4mm and the interval of 200mm are arranged inside the window frame mortar strip, the mortar strip reinforcing steel bars are embedded into an inner She Shajiang connecting layer and an outer leaf mortar layer 17100mm and are lapped and bound with an inner She Shajiang steel wire mesh and an outer leaf steel wire mesh; self-tapping screws are adopted to penetrate through the connecting steel plates with the bolt holes, self-tapping holes are drilled into the force transmission steel plates welded on the mortar strip steel bar meshes and the light steel frame lattice at the window frame, and high-performance mortar is adopted to fill up the grooves of the window frame mortar strips at the mortar strip force transmission steel plates, so that a window hole self-tapping screw assembly node is formed.
Preferably, the outer leaf of the composite wall mortar is a 25mmm thick mortar layer with the outer side strength of the composite filling wallboard not lower than C20, and the inner diameter of the outer leaf of the composite wall mortar is 2mm, a steel wire mesh of the outer leaf of the composite wall is 50mm apart, and a mortar clean protection layer of the steel wire mesh is 10mm; the composite wall perlite board and the composite wall polyphenyl insulation board are respectively a fireproof layer and an insulation layer of the composite filling wall; the inner leaf of the composite wall concrete mortar is internally provided with a concrete mortar inner leaf reinforcing steel bar net with the diameter of 4mm and the interval of 200mm, and the surface of the inner leaf of the composite wall concrete mortar is flush with the inner surfaces of the short-limb shear wall and the connecting beam.
Preferably, the composite wall self-tapping screw block connection node is a composite wall concrete mortar inner leaf, short-limb shear wall and connecting beam connection node structure; the left and right ends of the inner side of the reinforced net concrete mortar of the composite wall are connected with the short-leg shear wall, and a force transmission steel plate welded on the horizontal distribution steel bars of the short-leg shear wall and a force transmission steel plate welded on the inner leaf reinforced net of the concrete mortar are connected by self-tapping screws through connecting steel plates with holes; the upper and lower ends of the inner side of the reinforced net concrete mortar of the composite wall are connected with the connecting beam, the self-tapping screw penetrates through the connecting steel plate with the self-tapping screw hole, and the self-tapping is connected with the force transmission steel plate welded on the inner leaf reinforced net of the composite wall and the force transmission steel plate welded on the hooping of the connecting beam, so that a self-tapping screw block connecting node is formed;
The horizontal countersunk head bridge-cutoff long self-tapping screw connecting piece and the combined countersunk head bridge-cutoff long self-tapping screw connecting piece are web members of the light steel combined truss; sinking the connecting piece into a countersunk fiber composite connecting piece with the size not smaller than 50mm, drilling through the perlite-polyphenyl insulating layer, and connecting the light steel sash by self-tapping; the countersunk fiber composite connecting piece is a connecting piece formed by one step, wherein the connecting piece is a 3mmX60mmX60mm external square plate, a 4mmX46mmX46mm square plate, 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 countersunk bridge-cutoff long self-tapping screw connecting piece 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 countersunk bridge-cutoff long self-tapping screw connecting piece 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 in a through length; the top and the bottom of the vertical keels of the light steel frame are provided with horizontal countersunk bridge-cutoff long self-tapping screw connecting pieces, and the middle part of the vertical keels is provided with combined countersunk bridge-cutoff long self-tapping screw connecting pieces; the horizontal countersunk bridge-cutoff long self-tapping screw connecting pieces are arranged on the light steel sash transverse keels, and the distance is not more than 800mm.
Preferably, the horizontal web wires of the steel wire mesh frame and the oblique web wires of the steel wire mesh frame are supporting reinforcing steel wires for connecting the inner leaf steel wire mesh frame and the outer leaf steel wire mesh frame; the steel wire net frame consists of an inner leaf steel wire net, an outer leaf steel wire net, a steel wire net frame horizontal web wire with the spot welding interval of 200mm and the diameter of 2mm and a steel wire net frame oblique web wire with the angle of 45 degrees upwards, wherein the web wire penetrates through the perlite plate and the inner She Shajiang layers of polyphenyl insulation plates with dovetail grooves and then stretches into the short-limb shearing force horizontal projection for 60mm; in the composite filling wall, one end of the horizontal web wire of the steel wire net frame and one end of the inclined web wire of the steel wire net frame are welded with the steel wire net of the outer leaf of the composite wall, penetrate through the perlite plate of the composite wall and the polyphenyl insulation board of the composite wall, and the other end of the horizontal web wire of the steel wire net frame and the steel wire net of the inclined web wire frame are welded with the steel bar net of the inner leaf of the concrete mortar and are anchored in the inner leaf of the concrete mortar of the composite wall.
The method for supporting the steel wire mesh frame mortar-perlite-polyphenyl composite enclosure wall by the short-limb shear wall assembled light steel combined truss comprises the following steps of:
Firstly, processing vertical and transverse C-shaped steel of a light steel sash in a factory, welding, binding a short-limb shear wall reinforcement cage and a beam-connecting 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, a web wire of the steel wire mesh and a window frame mortar strip steel bar mesh welded with a force transmission steel plate, and prefabricating a horizontal countersunk head bridge-cutoff long self-tapping screw connecting piece and a combined countersunk head bridge-cutoff long self-tapping screw connecting piece;
Secondly, installing and positioning the light steel sash on a short-limb 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 the polyphenyl thermal insulation board through cushion blocks such as engineering plastics and positioning the polyphenyl thermal insulation board, the perlite board and the outer steel wire mesh; binding a window frame mortar strip steel bar net with an inner leaf steel wire net and an outer leaf steel wire net;
thirdly, sequentially penetrating the horizontal web wires of the steel wire mesh frame and the oblique web wires of the steel wire mesh frame through the perlite plate and the polyphenyl heat insulation plate, spot-welding two ends of the web wires of the steel wire mesh frame with the inner and outer steel wire meshes to form the steel wire mesh frame, and extending into the shear wall and the connecting beam for a certain anchoring distance; the horizontal bridge-cut-off self-tapping screw connecting piece and the combined bridge-cut-off self-tapping screw connecting piece sequentially penetrate through the perlite plate and the polyphenyl insulation board, are connected with the light steel sash in a self-tapping mode, and extend into the shear wall and the connecting beam for a certain anchoring distance;
Fourth, pouring inner and outer steel wire mesh mortar surface layers and window frame mortar strips with grooves, and curing. The window frame mortar strips are connected with the window hole connecting beam through self-tapping screw collecting and block connecting points;
Fifthly, pouring shear wall concrete by taking a steel wire mesh frame mortar-perlite-polyphenyl thermal insulation structure as a bottom die, and curing;
Sixthly, processing an outer leaf steel wire mesh of the composite wall, a perlite plate of the composite wall, a polyphenyl insulation board of the composite wall and an inner leaf steel bar mesh of the concrete mortar; welding one ends of the horizontal and oblique web wires of the steel wire mesh frame with an outer leaf steel wire mesh of the composite wall, and sequentially passing through the perlite plate, the polyphenyl insulation plate and the inner leaf steel bar mesh; welding a force transmission steel plate on the inner leaf steel bar net of the concrete mortar;
Seventh, pouring an outer leaf of the composite wall mortar and an inner leaf of the composite wall concrete mortar in a factory, reserving the outer leaf of the composite wall mortar, then plastering mortar strips, and reserving grooves on the outer side of a force transmission steel plate welded on a reinforcing mesh by the inner leaf of the composite wall concrete mortar;
Eighth step, maintaining and supporting the steel wire frame mortar-perlite-polyphenyl thermal insulation composite filling wall, and transporting to a construction site;
Step nine, overlapping the short-limb shear wall with the adjacent connecting beam horizontal steel bars, binding the vertical construction steel bars and the tie steel bars, and casting a strip inner side formwork between the short-limb shear wall and the adjacent connecting beam by vertical concrete, wherein the outer side polyphenyl insulation board also serves as a formwork;
Tenth step, paving a mortar cushion layer on the lower floor slab; and (3) longitudinally stressed steel bars at the tops of the lower short-limb shear wall and the connecting beam are butted with grouting sleeves at the bottoms of the upper shear wall and the connecting beam, polyphenyl insulation board rabbets of the upper wallboard and the lower wallboard and rear mortar coating strips are butted, grouting materials are poured into the sleeves through reserved holes, additional steel wire meshes are bound in the horizontal reserved strips, and high-performance insulation mortar is adopted to level horizontal mortar strips between the upper wallboard and the lower wallboard. Pouring concrete in vertical post-pouring strips of the adjacent wall bodies and the connecting beams, binding additional steel wire meshes in the vertical reserved strips, and trowelling vertical mortar strips between the left wall plate and the right wall plate by adopting high-performance heat-insulating mortar;
Eleventh step, connecting the composite filling wall with the upper and lower connecting beams and the left and right short-leg shear walls through the self-tapping screw block connecting structure of the inner leaf steel bar mesh concrete mortar surface layer; binding reinforcing steel bar meshes in a strip after the outer leaves of the composite filling wall steel wire mesh mortar and the outer leaves of the short-leg shear wall steel wire mesh mortar are smeared, and trowelling by adopting high-performance heat-preservation mortar;
And twelfth, removing the template, painting the shear wall and the outer leaf mortar surface layer of the filling wall with waterproof paint, and painting the inner surface of the short-leg shear wall and the inner leaf of the composite filling wall reinforcing steel bar net mortar 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 good fireproof and heat insulation properties, and the high-performance mortar layer has good structure, waterproof and weather resistance properties.
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.
3. The light steel frame wire net frame inner and outer leaf mortar surface layer sandwich perlite-polyphenyl thermal insulation composite wall section between the short shearing wall and the window hole overcomes the defect that the wall section between the short shearing wall and the window hole is filled with light wall plates with relatively large weight and relatively poor thermal insulation.
4. The self-tapping screw block connecting node solves the problem of connection between a fine and dense reinforcing steel bar net in She Shajiang layers in the composite filling wall and a connecting beam and a short-leg shear wall, and has good stress performance. Meanwhile, downward shearing deformation of a mortar layer around the window frame under long-term load can be effectively resisted, and gravity load of the external heat insulation structure of the short-leg shear wall is controlled at the layer and is not transmitted downwards.
5. 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 diagram of a connection structure of a short shear wall and a retaining wall;
FIG. 2 is a schematic view of the cross-sectional structure 1-1 of FIG. 1;
FIG. 3 is a schematic view of the cross-sectional structure 2-2 of FIG. 1;
FIG. 4 is a schematic view of the cross-sectional structure 3-3 of FIG. 1;
FIG. 5 is a schematic view of the cross-sectional structure 4-4 of FIG. 1;
FIG. 6 is a schematic view of the cross-sectional structure 5-5 of FIG. 1;
FIG. 7 is a schematic view of the cross-sectional structure 6-6 of FIG. 1;
FIG. 8 is a schematic view of the cross-sectional structure 7-7 of FIG. 1;
FIG. 9 is a schematic view of the cross-sectional structure 8-8 of FIG. 1;
FIG. 10 is a schematic structural view of a short-leg shear wall;
FIG. 11 is a schematic view of the connection structure of the combined open-end bridge-cutoff long self-tapping screw connecting piece in a wall body;
FIG. 12 is a schematic view of the cross-sectional structure 1-1 of FIG. 11;
FIG. 13 is a schematic view of the connection structure of the horizontal countersunk bridge-cutoff long self-tapping screw connecting piece in the wall body;
FIG. 14 is a schematic view of the cross-sectional structure 2-2 of FIG. 13;
FIG. 15 is a schematic view of the connection and arrangement of the horizontal web of the wire mesh frame and the diagonal web of the wire mesh frame in the wall;
FIG. 16 is a schematic view of the cross-sectional structure 3-3 of FIG. 15;
FIG. 17 is a schematic view of the connection structure of the upper and lower walls;
FIG. 18 is a further view of the connection structure of the upper and lower walls;
FIG. 19 is a schematic view of a left and right wall splice connection;
FIG. 20 is a schematic illustration of a composite infill wall and short shear wall composite insulation wall section connection;
FIG. 21 is a schematic view of the structure of the upper and lower prefabricated connecting beam composite walls of the window opening;
FIG. 22 is a further view of the structure of the upper and lower prefabricated tie beam composite walls of the window opening;
FIG. 23 is a schematic view of the connection structure of the composite infill wall with the upper and lower tie beams;
In the figure: 1. a short-leg shear wall; 2. the short-leg shear wall is provided with reinforcing steel bars; 3. the short-limb shear wall is vertically connected with reinforcing steel bars; 4. grouting a sleeve; 5. an upper connecting beam; 6. a lower connecting beam; 7. a beam-connected steel bar cage; 8. connecting the vertical connecting steel bars of the beam; 9. vertical keels of the light steel frame; 10. light steel sash transverse keels; 11. an inner She Shajiang layer; 12. an inner leaf steel wire mesh; 13. u-shaped steel wires; 14. polyphenyl thermal insulation board; 15. perlite plates; 16. an outer leaf mortar layer; 17. an outer leaf steel wire mesh; 18. a window frame mortar strip; 19. mortar strip steel bar net; 20. window hole self-tapping screw block joint; 21. outer leaves of the composite wall mortar; 22. composite wall outer leaf steel wire mesh; 23. a composite wall perlite board; 24. a polyphenyl thermal insulation board of a composite wall; 25. inner leaves of the composite wall concrete mortar; 26. a concrete mortar inner leaf reinforcing steel bar net; 27. the composite wall self-tapping nails are connected with the nodes in a blocking mode; 28. a horizontal countersunk bridge-cutoff long self-tapping screw connecting piece; 29. a combined countersunk bridge-cutoff long self-tapping screw connecting piece; 30. horizontal web wires of the steel wire net rack; 31. the steel wire net rack inclines to the abdominal wire; 32. the strip is smeared after the outer leaf steel wire mesh cement mortar layer; 33. cement-based cement; 34. a polyphenyl insulation board rabbet; 35. a shear wall mortar cushion layer; 36. grouting; 37. and (5) a concrete post-pouring strip.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The main construction of the wall body comprises:
The light steel frame steel wire net frame mortar surface layer-perlite-polyphenyl thermal insulation assembled short-limb shear wall mainly comprises a steel wire net mortar-perlite surface layer structure, a bearing steel wire net frame, a light steel combined truss and an assembled short-limb concrete shear wall. 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, and has good anti-seismic, fire-resistant, heat-insulating, waterproof and weather-resistant properties. 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 combined truss is a truss formed by a steel wire mesh mortar layer, a broken bridge self-tapping screw web member and a light steel sash chord member, and consists of a 25mm thick steel wire mesh mortar layer strip outer chord, a light steel sash vertical C-shaped steel inner chord, 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 light steel combined truss can effectively control the shearing deformation caused by the dead weight of the mortar surface layer to be transmitted downwards at each floor.
The sandwich perlite-polyphenyl thermal insulation composite wall section of the inner and outer leaf mortar surface layers of the light steel frame lattice steel wire net frame is a semi-embedded polyphenyl sandwich composite wall board, the outer side of the wall board is flush with the outer She Pingji of the steel wire net mortar of the assembled short-limb shear wall, and the inner side of the wall board is flush with the inner surfaces of the short-limb shear wall and the connecting beam. The outdoor-indoor structure comprises a 25mm steel wire mesh mortar layer outer leaf, a 25mm perlite plate, a 420mm polyphenyl insulation layer and a 50mm reinforced mesh concrete mortar inner leaf in sequence. A150 mm post-plastering mortar strip is reserved between the outer leaf of the reinforcing steel bar net mortar and two adjacent steel wire net mortar layers of the adjacent short-leg shear wall, and the steel wire nets in the post-plastering mortar strip area are lapped. The reinforced net concrete mortar inner leaf is connected with the upper and lower connecting beams and the left and right composite shear walls through self-tapping screw block connection structures.
The assembled shear wall combined connection structure is characterized in that an upper concrete short-limb shear wall plate, a lower concrete short-limb shear wall plate and a connecting beam are assembled by adopting a reinforced bar sleeve, and the short-limb shear wall and the connecting beam are assembled by adopting a post-cast concrete strip; the upper, lower, left and right light steel combined trusses support the connection between the steel wire net rack mortar-perlite-polyphenyl heat preservation systems, 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 areas are in lap joint; the window opening composite heat-insulating structure is connected with Lian Liangyi and the self-tapping screw of the short-leg shear wall block, and the composite filling wall is connected with the short-leg shear wall and the self-tapping screw of the connecting beam.
The specific connection structure of each structure is as follows:
Assembled concrete short-leg shear wall: the short-limb shear wall 1, the short-limb shear wall distributed steel bars 2 and the short-limb shear wall vertical connecting steel bars 3 are bound through tie steel bars to form a shear wall steel bar cage, the lower part of the short-limb shear wall vertical connecting steel bars 3 is connected with a grouting sleeve 4, and the connecting length of the short-limb shear wall vertical connecting steel bars 3 extending out of the top of the wallboard is connected with an assembled concrete floor slab and the grouting sleeve 4 of the upper layer. The light steel lattice is arranged outside the short-limb shear wall distributed steel bars 2. And after pouring concrete, forming the assembled grouting sleeve concrete short-leg shear wall with the light steel frame.
Connecting beam: the upper connecting beam 5 positioned on the upper side of the window hole and the lower connecting beam 6 positioned on the lower side of the window hole are formed by casting concrete through connecting beam reinforcement cages 7 bound in the upper connecting beam and connecting beam vertical connecting reinforcement bars 8 on the inner side of the reinforcement cages.
Light steel sash: the light steel sash is formed by welding a light steel sash vertical keel 9 and a light steel sash transverse keel 10, wherein a light steel sash self-tapping screw hole is formed in a light steel sash web plate, and a light steel sash flange groove is formed in a flange.
Inner leaf steel wire mesh mortar layer: the steel wire mesh 12 is poured with an inner She Shajiang layer 11, the flanges of the U-shaped steel wires 13 are spot-welded with the steel wire mesh 12, and the web members are welded with the light steel frame.
Steel wire frame mortar-pearlite-polyphenyl thermal insulation structure: the steel wire mesh mortar surface layer is composed of a polyphenyl insulation board 14 with a polyphenyl insulation board dovetail groove, a perlite board 15, an outer leaf mortar layer 16 and an outer leaf steel wire mesh 17, wherein the polyphenyl insulation board dovetail groove is mechanically meshed with an inner She Shajiang connecting layer, and a steel wire mesh mortar-perlite-polyphenyl insulation structure is connected with an assembled concrete short-limb shear wall, an upper connecting beam and a lower connecting beam through a light steel combined truss and a bearing steel wire mesh frame.
Bearing steel wire net rack: the steel wire mesh consists of an outer leaf steel wire mesh 17, an inner leaf steel wire mesh 12, a steel wire mesh frame horizontal web 30 and a steel wire mesh frame inclined web 31, wherein the steel wire mesh frame horizontal web 30 and the steel wire mesh frame inclined web 31 penetrate through a perlite plate 15 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 truss is composed of a steel wire net frame outer mortar surface layer formed by an outer leaf mortar layer 16 and an outer leaf steel wire net 17, a horizontal countersunk head bridge-cut-off long self-tapping screw connecting piece 28 and a chord member of a combined countersunk head bridge-cut-off long self-tapping screw connecting piece 29. The light steel combined truss consists of a steel wire mesh mortar layer strip outer chord formed by an outer leaf mortar layer 16 and an outer leaf steel wire mesh 17, a light steel sash vertical keel 9, a light steel sash horizontal keel 10 inner chord, a horizontal countersunk head bridge-cutoff long self-tapping screw connecting piece 28 web member and a combined countersunk head bridge-cutoff long self-tapping screw connecting piece 29 chord member; the bridge-cutoff self-tapping screw connecting piece drills through the perlite plate 15 and the polyphenyl insulation plate 14 to self-tap and connect the light steel sash vertical keel 9 and the light steel sash transverse keel 10.
The sandwich perlite-polyphenyl thermal insulation composite wall with the inner and outer leaf mortar surface layers of the light steel frame steel wire net frame consists of an outer leaf steel wire net mortar surface layer consisting of a composite wall mortar outer leaf 21 and a composite wall outer leaf steel wire net 22, an inner leaf steel bar net mortar layer consisting of a composite wall concrete inner leaf 25 and a concrete mortar inner She Gangjin net 26, a composite wall perlite plate 23 and a composite wall polyphenyl thermal insulation plate 24 in the sandwich layer, wherein one end of the composite wall inner steel wire net frame horizontal web 30 and the steel wire net frame oblique web 31 sequentially passes through the perlite plate and the polyphenyl thermal insulation plate after being welded with the composite wall outer leaf steel wire net 22, and the other end of the composite wall inner steel wire net frame horizontal web 30 and the steel wire net frame oblique web 31 are welded with the concrete mortar inner She Gangjin net 26 so as to effectively tie each surface layer of the composite wall.
The self-tapping screw assembly connection structure of the window hole: the window frame mortar strip 18 is internally provided with a mortar strip steel bar net 19, the mortar strip steel bar net 19 is lapped with the inner leaf steel wire net 12 and the outer leaf steel wire net 17, a force transmission steel plate is welded on the mortar strip steel bar net 19 to be in butt joint with C-shaped steel of the window frame light steel sash, and self-tapping screws are adopted to penetrate through the connecting steel plates to self-tap the mortar strip force transmission steel plate and the window frame light steel sash. And finally, trowelling the mortar strip grooves by adopting mortar.
The combined connection structure comprises: the grouting sleeve comprises a structure for connecting upper and lower short-leg shear wall distribution steel bars 2 with grouting material 36 in a grouting sleeve 4; a shear wall connection structure formed by the short-limb shear wall and the beam-connecting concrete post-pouring strip 37; the polyphenyl thermal insulation board rabbet 34 is coated with a thermal insulation layer connecting structure formed by cement-based adhesive cement 33; the rear plastering strip 32 of the outer leaf steel wire mesh cement mortar layer of the shear wall is connected with the connection structure of the outer leaf steel wire mesh mortar layer of the upper, lower, left and right wallboards; the strip 32 is smeared after the steel wire mesh cement mortar layer of the outer leaves of the composite wall and the shear wall is constructed; and composite wall self-tapping screw block connection nodes 27 of reinforced net concrete mortar inner leaves of the composite filling wall and upper and lower connecting beams.
The short-limb shear wall 1 is an assembled reinforced concrete L-shaped short-limb shear wall, the thickness of a wallboard is 250mm, the width of a single limb is 1250mm, and the width-thickness ratio H/B=8. The short-limb shear wall distributed steel bars 2 adopt double-row reinforcement: the diameter of the horizontally distributed steel bars is phi 10mm, the spacing is 200mm, the diameter of the vertically distributed steel bars is phi 10mm, the spacing is 200mm, the thickness of the net protective layer is 20mm, and the phi 6mm drawknot steel bars are arranged at intervals of 400 mm; the grouting sleeve 4 is adopted for assembly connection, and symmetrically arranged phi 16 steel bars are adopted as the vertical connecting steel bars 3 of the short-leg shear walls of the upper short-leg shear wall and the lower short-leg shear wall. The top of the short shear wall vertical connecting steel bar 3 protrudes 240mm from the wallboard to be connected with the floor slab and the upper wallboard. And the short-limb shear wall horizontally-distributed steel bars protrude out of the end 280mm of the wallboard and are lapped with the longitudinal steel bars of the adjacent connecting beams, and then concrete post-pouring strips 37 are poured.
The upper connecting beam 5 and the lower connecting beam 6 are connection structures between two wall limbs, are respectively positioned at the upper part and the lower part of the window hole, the section height of the upper connecting beam 5 is the distance from the upper edge of the window hole to the top of the wallboard concrete, the height of the lower connecting beam 6 is 450mm, and the section width is equal to the thickness of the wall body. And phi 10 longitudinal steel bars and phi 8 stirrups are arranged in the connecting beam. The longitudinal steel bars and the stirrups form a beam-connecting steel bar cage 7. And connecting beam vertical connecting steel bars 8 of phi 16 are arranged between connecting beam longitudinal bars, and the upper ends of the vertical connecting steel bars in the upper connecting beam 5 of the lower wallboard are connected with grouting sleeves 5 at the bottoms of the vertical connecting steel bars of the lower connecting beam 6 of the upper wallboard. Light steel frame lattice is arranged in the upper and lower connecting beams.
The light steel sash vertical keels 9 and the light steel sash horizontal keels 10 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 leaf steel wire mesh 12 by adopting U-shaped steel wires 13 with the diameter of 2mm to connect the steel wire mesh and the light steel sash, and the horizontal and vertical spot-welded intervals are not more than 200mm; the C-shaped steel section of the keel has the height of 70mm, the width of 50mm and the plate thickness of not less than 2mm, and the light steel sash has the width of 140mm and the height of 60mm, so that a convex steel section with the clear distance of 140mm, the height of 60mm and the width of 60mm is formed; the steel sections of the light steel frame grid vertical keels 9 are anchored into the short-limb shear wall 1 and the connecting beam from the positions of the shear wall and the connecting beam, wherein the positions are distributed outside the positions with the steel bar clear distance of 10mm between the horizontal steel bars and the vertical steel bars. The light steel frame with the protruding steel section is embedded into the shear wall concrete for 10mm in 10mm through high section after the shear wall concrete is poured, and the protruding steel section is anchored in the shear wall concrete for 60mm. In order to facilitate the connection of the self-tapping screw with the web plates of the light steel frame joists, round holes smaller than the diameter of the self-tapping screw are formed in the web plates of the light steel frame vertical joists 9 and the light steel frame transverse joists 10 so as to facilitate the passing of the self-tapping screw.
The inner She Shajiang layers 11 and the inner leaf steel wire nets 12 are mortar layers among the polyphenyl insulation board dovetail grooves, the short-leg shear wall 1, the upper connecting beams 5 and the lower connecting beams 6, the net distance between the inner leaf steel wire nets 12 and the polyphenyl insulation board 14 with the dovetail grooves is 10mm, and the gaps between the inner leaf steel wire nets 12 and the polyphenyl insulation board dovetail grooves are smoothed by adopting 14mm thick mortar with pitting surfaces with the strength not lower than C20; the U-shaped steel wire 13 is a connection structure of the inner leaf 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 leaf steel wire mesh 12, and the web member is welded with the light steel sash vertical keel 9 and the light steel sash transverse keel 10.
The polyphenyl thermal insulation board 14 is a polyphenyl thermal insulation board with dovetail grooves at the joint with the inner She Shajiang layers 11.
The perlite board 16 is a fire-resistant layer of wallboard and has a thickness of 25mm.
The outer leaf mortar layer 16 is a 25mmm thick mortar layer with the outer side strength of the wallboard not lower than C20, an outer leaf steel wire mesh 17 with the diameter of 2mm and the interval of 50mm is arranged in the outer leaf mortar layer 16, and the mortar net protection layer of the steel wire mesh is 10mm.
The window frame mortar strip 18 is a window frame edge sealing concrete mortar strip for connecting the inner She Shajiang layer 11 and the outer leaf mortar layer 16, the thickness of the window frame edge sealing concrete mortar strip is 50mm, mortar strip steel bar nets 19 with the diameter of 4mm and the distance of 200mm are arranged inside the window frame mortar strip, and the mortar strip steel bar nets 19 are embedded into the inner She Shajiang connecting layer 12 and the outer leaf mortar layer 17100mm and are lapped and bound with the inner She Shajiang steel wire nets 13 and the outer leaf steel wire nets 18. Self-tapping screws are adopted to penetrate through the connecting steel plates with the bolt holes, self-tapping holes are drilled into the force transmission steel plates welded on the mortar strip steel bar meshes and the light steel frame lattice at the window frame, and high-performance mortar is adopted to fill up the grooves of the window frame mortar strips at the mortar strip force transmission steel plates, so that the self-tapping screw block joint 20 at the window opening is formed.
The composite wall mortar outer leaf 21 is a 25mmm thick mortar layer with the outer side strength of the composite filling wallboard not lower than C20, the composite wall mortar outer leaf 21 is internally provided with a composite wall outer leaf steel wire mesh 22 with the diameter of 2mm and the distance of 50mm, and the mortar net protection layer of the steel wire mesh is 10mm.
The composite wall perlite plate 23 and the composite wall polyphenyl insulation plate 24 are respectively a fireproof layer and an insulation layer of the composite filling wall.
The inner leaf 25 of the concrete mortar of the composite wall is internally provided with the inner She Gangjin net 26 of the concrete mortar with the diameter of 4mm and the interval of 200mm, and the surface of the inner leaf 25 of the concrete mortar of the composite wall is flush with the inner surfaces of the short-limb shear wall and the connecting beam.
The composite wall self-tapping screw block connection node 27 is a composite wall concrete mortar inner leaf and short limb shear wall and connecting beam connection node structure. The left and right ends of the inner side of the reinforced net concrete mortar of the composite wall are connected with the short-leg shear wall, and a force transmission steel plate welded on the horizontal distribution steel bars of the short-leg shear wall and a force transmission steel plate welded on the She Gangjin net 26 in the concrete mortar are connected by self-tapping screws through perforated connecting steel plates. The upper end and the lower end of the inner side of the reinforced net concrete mortar of the composite wall are connected with the connecting beam, the self-tapping screw penetrates through the connecting steel plate with the self-tapping screw hole, and the self-tapping is connected with the force transmission steel plate welded on the inner leaf reinforced net of the composite wall and the force transmission steel plate welded on the stirrup of the connecting beam, thereby forming a self-tapping screw assembly connecting node.
The horizontal countersunk head bridge-cutoff long self-tapping screw connecting piece 28 and the combined countersunk head bridge-cutoff long self-tapping screw connecting piece 29 are web members of the light steel combined truss. The connecting piece is sunk into a countersunk fiber composite connecting piece with the size not smaller than 50, and the perlite-polyphenyl insulating layer is drilled through, and the light steel frame is connected 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 countersunk bridge-cutoff long self-tapping screw connecting piece 28 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 countersunk bridge-cutoff long self-tapping screw connecting piece 29 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. The top and bottom of the light steel frame vertical keel 9 are provided with horizontal countersunk head bridge-cutoff long self-tapping screw connecting pieces 28, and the middle part is provided with combined countersunk head bridge-cutoff long self-tapping screw connecting pieces 29. The horizontal countersunk bridge-cutoff long self-tapping screw connecting pieces 24 are arranged on the light steel frame transverse keels 10, and the distance is not more than 800mm.
The steel wire net frame horizontal web wires 30 and the steel wire net frame oblique web wires 31 are supporting reinforcing steel wires for connecting the inner leaf steel wire net 12 and the outer leaf steel wire net 17. The steel wire net frame is composed of an inner leaf steel wire net 12, an outer leaf steel wire net 17, a steel wire net frame horizontal web 30 with the spot welding interval of 200mm and the diameter of 2mm and a steel wire net frame inclined web 31 with the angle of 45 degrees upwards, and the web penetrates through the perlite plate 15 and the inner She Shajiang layer 11 to be adhered with the polyphenyl insulation plate 14 with the dovetail grooves and then stretches into the short limb shearing force 1 to horizontally project for 60mm. In the composite filling wall, one end of a steel wire net frame horizontal web 30 and one end of a steel wire net frame inclined web 31 are welded with a composite wall outer leaf steel wire net 22, penetrate through a composite wall perlite plate 23 and a composite wall polyphenyl insulation board 24, and the other end is welded with a concrete mortar inner She Gangjin net 26 and anchored in a composite wall concrete mortar inner leaf 25.
The rear strip 32 of the outer leaf steel wire mesh cement mortar layer is a connecting structure of the upper and lower and left and right outer steel wire mesh mortar layers of the outer thermal insulation layer of the short-leg shear wall board, and is also a connecting structure of the outer leaf of the composite filled wall steel wire mesh mortar and the outer thermal insulation layer of the short-leg shear wall board. The strip is smeared behind the outer mortar surface layer of She Yuliu mm width outside the steel wire mesh mortar layer, after the wallboard is butted, the connection position of the outer steel wire mesh mortar layer is 150mm width back smeared mortar layer, the steel wire mesh is reinforced by built-in 150 width, 50mm interval and 2mm diameter, and high-performance heat preservation mortar is smeared in the strip, the integrity of wallboard connection nodes is guaranteed by smeared strip 32 behind the outer leaf steel wire mesh cement mortar layer, and the weather resistance of the wallboard is improved by good waterproof performance.
The cement-based adhesive cement 33 is an inorganic bonding material smeared at the rabbet 34 of the polyphenyl insulation board, and can enhance the integrity and the waterproof performance of the polyphenyl insulation board of the adjacent wall boards.
The shear wall mortar cushion 35 is a 20mm thick mortar cushion between the floor slab and the short-leg shear wall thereon.
Grouting material 36 is a high performance cement-based bonding material within grouting sleeve 4.
The concrete post-pouring strip 37 is an assembly connection structure of a short-limb shear wall and a connecting beam, wherein the 280mm of the left end and the right end of a horizontal distribution reinforcing steel bar protruding out of a wallboard of the short-limb shear wall are lapped with the longitudinal ribs of the adjacent connecting beam, and the vertical construction ribs and the tie reinforcing steel bars are bound, and then the concrete post-pouring strip 37 is poured, so that the assembly connection of the left wallboard and the right wallboard is completed.
When the wall body is manufactured, firstly, the arrangement position and the specific size of a light steel combined truss supporting steel wire grid mortar-perlite-polyphenyl heat insulation short-limb shear wall and a connecting beam are determined according to the design of a building structure, the thickness and the reinforcement of the shear wall and the connecting beam are determined, the thickness of a heat insulation layer is determined according to the climate conditions of a building region, the thickness of an outer steel wire 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 heat insulation system, a light steel frame is arranged, and the steel wire grid and the light steel combined truss is designed according to the stress requirement; and determining the size and thickness of the self-tapping screw block node steel plate, and the arrangement mode and number of the self-tapping screws. Determining relevant design parameters of the composite filling wall, and designing and stress checking the short-leg shear wall and the composite filling wall connection node structure; according to the design scheme, drawing a detailed structural drawing, and manufacturing, transporting and field assembly construction of the prefabricated wallboard.
The method for supporting the steel wire mesh frame mortar-perlite-polyphenyl composite enclosure wall by the short-limb shear wall assembled light steel combined truss comprises the following steps of:
Firstly, processing vertical and transverse C-shaped steel of a light steel sash in a factory, welding, binding a short-limb shear wall reinforcement cage and a beam-connecting 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, a web wire of the steel wire mesh and a window frame mortar strip steel bar mesh welded with a force transmission steel plate, and prefabricating a horizontal countersunk head bridge-cutoff long self-tapping screw connecting piece and a combined countersunk head bridge-cutoff long self-tapping screw connecting piece;
Secondly, installing and positioning the light steel sash on a short-limb 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 the polyphenyl thermal insulation board through cushion blocks such as engineering plastics and positioning the polyphenyl thermal insulation board, the perlite board and the outer steel wire mesh; binding a window frame mortar strip steel bar net with an inner leaf steel wire net and an outer leaf steel wire net;
thirdly, sequentially penetrating the horizontal web wires of the steel wire mesh frame and the oblique web wires of the steel wire mesh frame through the perlite plate and the polyphenyl heat insulation plate, spot-welding two ends of the web wires of the steel wire mesh frame with the inner and outer steel wire meshes to form the steel wire mesh frame, and extending into the shear wall and the connecting beam for a certain anchoring distance; the horizontal bridge-cut-off self-tapping screw connecting piece and the combined bridge-cut-off self-tapping screw connecting piece sequentially penetrate through the perlite plate and the polyphenyl insulation board, are connected with the light steel sash in a self-tapping mode, and extend into the shear wall and the connecting beam for a certain anchoring distance;
Fourth, pouring inner and outer steel wire mesh mortar surface layers and window frame mortar strips with grooves, and curing. The window frame mortar strips are connected with the window hole connecting beam through self-tapping screw collecting and block connecting points;
Fifthly, pouring shear wall concrete by taking a steel wire mesh frame mortar-perlite-polyphenyl thermal insulation structure as a bottom die, and curing;
Sixthly, processing an outer leaf steel wire mesh of the composite wall, a perlite plate of the composite wall, a polyphenyl insulation board of the composite wall and an inner leaf steel bar mesh of the concrete mortar; welding one ends of the horizontal and oblique web wires of the steel wire mesh frame with an outer leaf steel wire mesh of the composite wall, and sequentially passing through the perlite plate, the polyphenyl insulation plate and the inner leaf steel bar mesh; welding a force transmission steel plate on the inner leaf steel bar net of the concrete mortar;
Seventh, pouring an outer leaf of the composite wall mortar and an inner leaf of the composite wall concrete mortar in a factory, reserving the outer leaf of the composite wall mortar, then plastering mortar strips, and reserving grooves on the outer side of a force transmission steel plate welded on a reinforcing mesh by the inner leaf of the composite wall concrete mortar;
Eighth step, maintaining and supporting the steel wire frame mortar-perlite-polyphenyl thermal insulation composite filling wall, and transporting to a construction site;
Step nine, overlapping the short-limb shear wall with the adjacent connecting beam horizontal steel bars, binding the vertical construction steel bars and the tie steel bars, and casting a strip inner side formwork between the short-limb shear wall and the adjacent connecting beam by vertical concrete, wherein the outer side polyphenyl insulation board also serves as a formwork;
Tenth step, paving a mortar cushion layer on the lower floor slab; and (3) longitudinally stressed steel bars at the tops of the lower short-limb shear wall and the connecting beam are butted with grouting sleeves at the bottoms of the upper shear wall and the connecting beam, polyphenyl insulation board rabbets of the upper wallboard and the lower wallboard and rear mortar coating strips are butted, grouting materials are poured into the sleeves through reserved holes, additional steel wire meshes are bound in the horizontal reserved strips, and high-performance insulation mortar is adopted to level horizontal mortar strips between the upper wallboard and the lower wallboard. Pouring concrete in vertical post-pouring strips of the adjacent wall bodies and the connecting beams, binding additional steel wire meshes in the vertical reserved strips, and trowelling vertical mortar strips between the left wall plate and the right wall plate by adopting high-performance heat-insulating mortar;
Eleventh step, connecting the composite filling wall with the upper and lower connecting beams and the left and right short-leg shear walls through the self-tapping screw block connecting structure of the inner leaf steel bar mesh concrete mortar surface layer; binding reinforcing steel bar meshes in a strip after the outer leaves of the composite filling wall steel wire mesh mortar and the outer leaves of the short-leg shear wall steel wire mesh mortar are smeared, and trowelling by adopting high-performance heat-preservation mortar;
And twelfth, removing the template, painting the shear wall and the outer leaf mortar surface layer of the filling wall with waterproof paint, and painting the inner surface of the short-leg shear wall and the inner leaf of the composite filling wall reinforcing steel bar net mortar with inner wall paint.
The present invention is not limited to the above-mentioned embodiments, and any person skilled in the art, based on the technical solution of the present invention and the inventive concept thereof, can be replaced or changed within the scope of the present invention.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211690887.2A CN115928909B (en) | 2022-12-27 | 2022-12-27 | Short-limb shear wall assembled light steel combined truss supported steel wire net rack mortar-perlite-polyphenyl composite enclosure wall and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211690887.2A CN115928909B (en) | 2022-12-27 | 2022-12-27 | Short-limb shear wall assembled light steel combined truss supported steel wire net rack mortar-perlite-polyphenyl composite enclosure wall and manufacturing method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN115928909A CN115928909A (en) | 2023-04-07 |
| CN115928909B true CN115928909B (en) | 2024-06-18 |
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| CN114592741B (en) * | 2022-03-19 | 2024-03-22 | 北京工业大学 | Assembled L-shaped composite wallboard self-tapping screw assembly and post-pouring strip combined connection structure and manufacturing method |
| CN114753647A (en) * | 2022-04-27 | 2022-07-15 | 武汉理工大学 | Integrally prefabricated coupled superposed shear wall and manufacturing method thereof |
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