CN115928909A - Short-limb shear wall assembled light steel combined truss bearing steel wire mesh frame mortar-perlite-polyphenyl composite enclosure wall and manufacturing method thereof - Google Patents
Short-limb shear wall assembled light steel combined truss bearing steel wire mesh frame mortar-perlite-polyphenyl composite enclosure wall and manufacturing method thereof Download PDFInfo
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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Abstract
The invention discloses a short-limb shear wall assembled light steel combined truss bearing steel wire mesh frame mortar-perlite-polyphenyl composite enclosure wall and a manufacturing method thereof, and relates to the technical field of assembled concrete building structural engineering. The steel wire mesh concrete shear wall mainly comprises a steel wire mesh mortar-perlite surface layer structure, a bearing steel wire mesh frame, a light steel combined truss and an assembled short concrete shear wall. The invention overcomes the defects of relatively large weight and relatively poor heat preservation of the light wall board filled in the wall section between the short-limb shear wall and the window opening, solves the problem of connection between the fine and dense reinforcing mesh in the She Shajiang layer in the composite filled wall and the connecting beam and the short-limb shear wall, and has good stress performance; meanwhile, the downward shearing deformation of the mortar layer around the window frame under long-term load can be effectively resisted, the gravity load of the short-limb shear wall external thermal insulation structure is controlled on the layer and is not transmitted downwards, the integrity of the mortar layer of the wallboard is enhanced, the problem of the joint connection of the traditional thermal insulation boards is solved, and the waterproof performance of the wallboard is improved.
Description
Technical Field
The invention belongs to the technical field of assembly type concrete building structural engineering, and particularly relates to a short-limb shear wall assembly type lightweight steel combined truss bearing steel wire mesh frame mortar-perlite-polyphenyl composite enclosure wall and a manufacturing method thereof.
Background
At present, the fabricated concrete structure in the multi-storey and high-rise residential building is widely applied, but the innovation development of the heat-preservation and energy-saving prefabricated part 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 ultralow energy consumption and nearly zero energy consumption still exist. Therefore, the multifunctional integrated assembled short-leg shear wall outer wall system is researched and developed, and the assembled composite outer wall integrating decoration, fire prevention, water prevention, 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 the national assembled green building.
The short-limb shear wall is a double-limb or multi-limb anti-seismic wall body with the wall section width-thickness ratio of 4-8H/B, is suitable for multi-storey and high-rise 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 H/B > 8.
The bottleneck problem that prior art exists: the traditional external wall external insulation structure is easy to fall off and has poor falling and weather resistance under the action of wind load and long-term load, in recent years, safety accidents caused by the falling of an external insulation layer of an external wall frequently occur, and the accidents are concentrated in that insulation mortar falls off and inorganic light aggregate fireproof insulation boards mainly bonded fall off, and once the external insulation layer of the external wall falls off due to hollowing, the external insulation layer and an external decorative surface layer fall off from high altitude in a large area, so that peripheral pedestrians are easily injured or objects are easily damaged; 2 deformation of the ultra-thick heat insulation layer is difficult to control under long-term load, the use of the traditional external heat insulation layer is limited by building height, the external heat insulation of the external wall is arranged along the through height of the external wall of the building, the elastic modulus of the heat insulation plate is low, the deformation is large, and the gravity load of the mortar heat insulation layer can not be completely transmitted to the main structure of the external wall, so that the gravity load accumulation effect can be generated along with the increase of the structure height, the integral stability of the external heat insulation layer is not facilitated, the application height of a thin-plastered external wall heat insulation system is strictly limited in partial domestic areas, and the facing layer of the thin-plastered external wall heat insulation system is required to forbid the use of ceramic facing bricks to avoid falling risks; 3, the traditional external thermal insulation wall has poor fire resistance, most external thermal insulation structures have no fireproof protective layer, and organic thermal insulation plates such as polystyrene, polyurethane, foamed rubber and the like have poor fire resistance, so that more fire accidents of the external thermal insulation system of the external wall occur; 4, the external heat-insulation structure and the base wall are mainly anchored and connected by adopting an expanded plastic anchor bolt and a heat-insulation plastic nail, and the nonmetal connecting piece has low tensile strength and shear strength and poor weather resistance, so that the effective tie of the heat-insulation structure and the wall board cannot be ensured; 5, the traditional external insulation board is difficult to process the joints and the openings, the problem of water leakage at the joints is serious, and the insulation structure is easy to loosen and fall off; 6 the wall section between the traditional short-limb shear wall and the window opening is filled with the light wall board, so that the weight is large, the heat insulation performance is poor, the deformation of the traditional filling wall and the concrete structure main body is not coordinated, the stress performance of a connecting node is weak, and the damage of the filling wall board is serious under the action of an earthquake.
Disclosure of Invention
The invention aims to provide a short-limb shear wall assembled type light steel combined truss supporting steel wire mesh frame mortar-perlite-polyphenyl composite enclosure wall and a manufacturing method thereof, which are suitable for an outer wall with a window hole of a house with ultra-low energy consumption of a concrete short-limb shear wall structure, and have the advantages of light weight, good fire resistance and good heat insulation performance.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the short-limb shear wall assembled light steel combined truss bearing steel wire mesh frame 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 distributed reinforcing steel bars and short-limb shear wall vertical connecting reinforcing steel bars through tie reinforcing steel bars to form a shear wall reinforcing steel bar cage, wherein the lower parts of the short-limb shear wall vertical connecting reinforcing steel bars are connected with grouting sleeves, and the parts of the short-limb shear wall vertical connecting reinforcing steel bars, which extend out of the top of a wallboard, are connected with an assembled concrete floor slab and a grouting sleeve of the upper layer;
the connecting beams comprise upper connecting beams and lower connecting beams, and the upper connecting beams positioned on the upper side of the window opening and the lower connecting beams positioned on the lower side of the window opening are formed by pouring concrete through connecting beam reinforcement cages bound inside the connecting beams and connecting beam vertical connecting reinforcements on the inner sides of the reinforcement cages;
the light steel sash is arranged on the outer side of distributed steel bars of the short-limb shear wall and is formed by welding a vertical keel of the light steel sash and a transverse keel of the light steel sash, a self-tapping nail hole of the light steel sash is formed on a web plate of the light steel sash, and a flange groove of the light steel sash is formed on a flange;
the inner leaf steel wire mesh mortar layer is formed by pouring the inner leaf mortar layer by the inner leaf steel wire mesh, the flange of the U-shaped steel wire is in spot welding with the inner leaf steel wire mesh, and the web member is welded with the light steel sash;
the steel wire mesh 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, an outer leaf mortar layer and a steel wire mesh mortar surface layer consisting of an outer leaf steel wire mesh, wherein the polyphenyl thermal insulation board dovetail groove is mechanically occluded with an inner leaf mortar connecting layer, and the steel wire mesh frame mortar-perlite-polyphenyl thermal insulation structure is connected with the assembled concrete short-limb shear wall, the upper connecting beam and the lower connecting beam through a light steel combined truss and a bearing steel wire mesh frame;
the bearing steel wire mesh frame is composed of an outer leaf steel wire mesh, an inner leaf steel wire mesh spot welding steel wire mesh frame horizontal web fibers and steel wire mesh frame oblique web fibers, and the steel wire mesh frame horizontal web fibers and the steel wire mesh frame oblique web fibers penetrate through the perlite plate and the polyphenyl insulation plate and then extend into the shear wall concrete, so that the steel wire mesh frame mortar-perlite-polyphenyl insulation structure and the concrete shear wall are tied;
the light steel combined truss is composed of a steel wire mesh mortar layer strip outer chord formed by an outer leaf mortar layer and an outer leaf steel wire mesh, 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-cut-off long self-tapping screw connecting piece and a chord member of a combined countersunk head bridge-cut-off long self-tapping screw connecting piece; the bridge-cutoff self-tapping screw connecting piece drills through the perlite plate and the polyphenyl insulation board to self-tap and connect the light steel sash vertical keel and the light steel sash transverse keel;
the light steel sash steel wire mesh frame inner and outer leaf mortar surface layers sandwich the perlite-polyphenyl heat preservation composite wall, and the light steel sash steel wire mesh frame inner and outer leaf mortar surface layers are composed of outer leaf steel wire mesh mortar surface layers composed of composite wall mortar outer leaves and composite wall outer leaf steel wire meshes, inner leaf steel bar mesh mortar layers composed of composite wall concrete mortar inner leaves and concrete mortar inner leaf steel bar meshes, and composite wall perlite plates and composite wall polyphenyl heat preservation plates in the sandwich layers;
the outer leaf steel mesh cement mortar layer is coated with strips, which are the connecting structures of the upper and lower outer steel mesh mortar layers, the left and the right outer steel mesh mortar layers of the outer heat-insulating layer of the short-limb shear wall board and are also the connecting structures of the outer leaves of the composite filler wall steel mesh mortar and the outer heat-insulating layer of the short-limb shear wall board; after the wallboard is butted, the connecting position of the outer steel wire mesh mortar layer is 150mm wide, the mortar layer is smeared, a 150 wide reinforcing steel wire mesh with the interval of 50mm and the diameter of 2mm is arranged in the mortar layer, high-performance heat-insulation mortar is smeared in the strips, the integrity of the connecting joint of the wallboard is ensured by smearing the strips after the outer leaf steel wire mesh cement mortar layer, and the waterproof wallboard has good waterproofness and improves the weather resistance of the wallboard;
the window hole self-tapping screw cluster block connecting structure is characterized in that a window frame mortar strip is internally provided with a mortar strip steel bar net, the mortar strip steel bar net is lapped with an inner leaf steel wire net and an outer leaf steel wire net, a force transmission steel plate is welded on the mortar strip steel bar net and is butted with C-shaped steel of a window frame light steel sash, a self-tapping screw penetrates through a connecting steel plate to be in self-tapping connection with the mortar strip force transmission steel plate and the window frame light steel sash, and finally mortar is used for leveling a mortar strip groove;
the combined connecting structure comprises an upper short-limb shear wall, a lower short-limb shear wall, a grouting sleeve and an inner grouting slurry connecting structure; the shear wall connection structure is formed by the short-limb shear wall and the connecting beam concrete post-cast strip; a heat-insulating layer connecting structure formed by cement-based adhesive cement is coated on the groove and the tongue of the polyphenyl heat-insulating plate; the connecting structure of the outer leaf steel wire mesh mortar layers of the shear wall, which are connected with the upper and lower wall boards and the left and right wall boards, is formed by smearing strips behind the outer leaf steel wire mesh cement mortar layers of the shear wall; coating a strip structure on the composite wall and the shear wall outer leaf steel wire mesh cement mortar layer; and the steel bar mesh concrete mortar inner leaf of the composite infilled wall and the composite wall self-tapping nail cluster connecting node of the upper connecting beam and the lower connecting beam;
the concrete post-pouring strip is an assembly connection structure of the short-limb shear wall and the connecting beam, horizontally distributed reinforcing steel bars of the short-limb shear wall protrude 280mm from the left end and the right end of the wallboard and are lapped with the vertical reinforcing steel bars of the adjacent connecting beam, the vertical structural reinforcing steel bars and the tie reinforcing steel bars are bound, and then the concrete post-pouring strip is poured, 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 wall plate is 250mm, and the width of a single limb is 1250mm; the distributed reinforcing steel bars of the short-limb shear wall adopt double rows of reinforcing steel bars, the diameter of the horizontally distributed reinforcing steel bars is 10mm, the distance between the horizontally distributed reinforcing steel bars is 200mm, the diameter of the vertically distributed reinforcing steel bars is 10mm, the distance between the vertically distributed reinforcing steel bars is 200mm, the thickness of a net protective layer is 20mm, and tie reinforcing steel bars with the diameter of 6mm are arranged at intervals of 400 mm; adopting a grouting sleeve for assembly connection, and adopting symmetrically arranged reinforcing steel bars with the diameter of 16mm as vertical connecting reinforcing steel bars of the upper and lower short-leg shear walls; the top of the short-limb shear wall longitudinal connecting steel bar protrudes 240mm out of the wallboard and is connected with the floor slab and the upper wallboard; and horizontally distributed reinforcing steel bars of the short-limb shear wall protrude from the end part of the wallboard by 280mm, and concrete post-pouring strips are poured after the short-limb shear wall is lapped with the longitudinal reinforcing steel bars of the adjacent coupling beams.
Preferably, the upper connecting beam and the lower connecting beam are connecting structures between two wall limbs and are respectively positioned at the upper part and the lower part of the window opening, the height of the section of the upper connecting beam is the distance from the upper edge of the window opening to the top of the concrete of the wallboard, the height of the lower connecting beam is 450mm, and the width of the section is equal to the thickness of the wall body; a phi 10mm longitudinal steel bar and a phi 8mm stirrup are arranged inside the connecting beam; the longitudinal steel bars and the stirrups form a beam-connecting reinforcement cage; arranging connecting beam vertical connecting steel bars of phi 16 between the connecting beam longitudinal bars, and connecting the upper ends of the vertical connecting steel bars in the upper connecting beam of the lower wallboard with grouting sleeves at the bottoms of the vertical connecting steel bars of the lower connecting beam of the upper wallboard; light steel sash is arranged in the upper and lower connecting beams.
Preferably, the light steel sash vertical keel and the light steel sash transverse keel are formed by welding C-shaped steel with vertical and horizontal spacing not greater than 800, the light steel sash is respectively connected with the steel wire mesh and the light steel sash by spot welding with U-shaped steel wires with the diameter of 2mm at the position with the clear distance of 10mm from the inner leaf steel wire mesh, and the spacing between the horizontal spot welding and the vertical spot welding is not greater than 200mm; the height of the C-shaped steel section of the keel is 70mm, the width of the C-shaped steel section of the keel is 50mm, the thickness of the plate is not less than 2mm, and flange grooves of the light steel sash with the width of 140mm and the height of 60mm are formed on the light steel sash, so that convex steel sections with the clear distance of 140mm, the height of 60mm and the width of 60mm are formed; the light steel sash vertical keel steel section is anchored into the short-limb shear wall and the connecting beam from the position which is 10mm away from the clear distance of the distributed steel bars on the outer side between the horizontal steel bars and the vertical steel bars of the shear wall and the connecting beam; after the shear wall concrete is poured, the 10 mm-through high section of the light steel sash with the convex steel section is embedded into the shear wall concrete by 10mm, and the convex steel section is anchored in the shear wall concrete by 60mm; the web of the light steel sash keel is connected with the web of the light steel sash keel for facilitating the self-tapping screw to pass through, and round holes smaller than the diameter of the self-tapping screw are formed in the web of the light steel sash vertical keel and the web of the light steel sash transverse keel.
Preferably, the inner leaf mortar layer and the inner leaf steel wire mesh are mortar layers among a dovetail groove of the polyphenyl insulation board, a short-limb shear wall, an upper connecting beam and a lower connecting beam, the net distance between the inner leaf steel wire mesh and the polyphenyl insulation board with the dovetail groove is 10mm, and a gap between the inner leaf steel wire mesh and the dovetail groove of the polyphenyl insulation board is troweled by adopting mortar with the strength not lower than C20 and the thickness of 14mm and with a pitted surface; the U-shaped steel wire is in a structure that the inner leaf steel wire mesh is connected with the light steel sash, the bent flange of the U-shaped steel wire is in spot welding with the inner leaf steel wire mesh, and the web members are 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 the inner leaf mortar layer and the outer leaf mortar layer, the thickness of the window frame edge sealing concrete mortar strip is 50mm, a mortar strip reinforcing mesh with the diameter of 4mm and the interval of 200mm is arranged inside the window frame mortar strip, and the mortar strip reinforcing mesh is embedded into the inner leaf mortar connecting layer, is overlapped with the inner leaf mortar layer 17100mm, is overlapped with the inner leaf mortar layer steel wire mesh and the outer leaf steel wire mesh and is bound; the self-tapping nails penetrate through the connecting steel plates with the bolt holes, the self-tapping nails are drilled into the force transmission steel plates welded on the mortar strip steel bar net and the light steel sash lattices at the window frame, and high-performance mortar is adopted to fill and level the mortar strip grooves at the mortar strip force transmission steel plates at the window frame, so that the self-tapping nail cluster node at the window opening is formed.
Preferably, the composite wall mortar outer leaf is a 25mm thick mortar layer with the outer side strength of the composite filling wallboard not lower than C20, a composite wall outer leaf steel wire mesh with the diameter of 2mm and the interval of 50mm is arranged in the composite wall mortar outer leaf, and a mortar net protection layer of the steel wire mesh is 10mm; the perlite plate and the polyphenyl insulation plate of the composite wall are respectively a fireproof layer and an insulation layer of the composite infilled wall; the concrete mortar inner leaf of the composite wall is internally provided with a concrete mortar inner leaf reinforcing mesh with the diameter of 4mm and the distance of 200mm, and the surface of the concrete mortar inner leaf of the composite wall is flush with the inner surfaces of the short-limb shear wall and the connecting beam.
Preferably, the composite wall self-tapping nail cluster connecting node is a composite wall concrete mortar inner leaf, short-limb shear wall and connecting beam connecting node structure; the left end and the right end of the inner side of the composite wall reinforcing mesh concrete mortar are connected with the short-limb shear wall, and a force transmission steel plate welded on horizontally distributed reinforcing steel bars of the short-limb shear wall and a force transmission steel plate welded on the concrete mortar inner leaf reinforcing mesh are in self-tapping connection by self-tapping screws through perforated connecting steel plates; the upper end and the lower end of the inner side of the composite wall reinforcing mesh concrete mortar 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 screw is connected with the force transmission steel plate welded on the composite wall inner leaf reinforcing mesh and the force transmission steel plate welded on the connecting beam stirrup, 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 a countersunk fiber composite connecting piece with the size not less than 50mm into the connecting piece, drilling through the perlite-polyphenyl insulating layer and self-tapping connecting light steel sash; the countersunk head fiber composite connecting piece is a connecting piece formed in one step by an outer square plate with the thickness of 3mmX60mmX60mm, a square plate with the thickness of 4mmX46mmX46mm, a central hollow round rod with the outer diameter of 14mm, the inner diameter of 10mm and the length of 50mm, and a central hollow round rod with the outer diameter of 14mm, the inner diameter of 6mm and the length of 20 mm; the angle between the square plate of the countersunk head fiber composite connecting piece of the horizontal countersunk head broken bridge long self-tapping screw connecting piece and the hollow round rod is 90 degrees, and the angle between the rectangular plate of the combined countersunk head broken bridge long self-tapping screw connecting piece and the hollow round rod is divided into 90 degrees penetrating through the horizontal long self-tapping screw and 45 degrees penetrating through the oblique upward long self-tapping screw; the diameter of a nail head of the steel self-tapping nail is 10mm, the diameter of a nail rod is 6mm, and the whole length of the steel self-tapping nail is provided with threads; arranging horizontal countersunk head bridge-breaking long self-tapping screw connecting pieces at the top and the bottom of the vertical keel of the light steel sash, and arranging combined countersunk head bridge-breaking long self-tapping screw connecting pieces in the middle; horizontal countersunk head broken bridge long self-tapping screw connecting pieces are arranged on the transverse keel of the light steel sash, and the distance between the horizontal keel and the self-tapping screw connecting pieces is not more than 800mm.
Preferably, the horizontal web wires and the oblique web wires of the steel wire mesh frame are supporting reinforcing steel wires for connecting the inner leaf steel wire mesh and the outer leaf steel wire mesh; the steel wire mesh frame consists of an inner leaf steel wire mesh, a steel wire mesh frame horizontal web wire with the spot welding distance of 200mm and the diameter of 2mm of an outer leaf steel wire mesh and a steel wire mesh frame inclined web wire inclined upwards by 45 degrees, wherein the web wire penetrates through the perlite plate and the polyphenyl insulation board with the dovetail groove bonded on the inner leaf mortar layer and then extends into the short-limb shear horizontal projection by 60mm; in the composite filled wall, one end of a horizontal web wire of a steel wire net rack and one end of an oblique web wire of the steel wire net rack are welded with the outer leaf steel wire mesh 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 rack and the oblique web wire of the steel wire net rack are welded with the steel bar mesh of the inner leaf of concrete mortar and 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:
firstly, processing and welding vertical and horizontal C-shaped steel of a light steel sash in a factory, binding a short-limb shear wall reinforcement cage and a coupling beam reinforcement cage, installing a grouting sleeve, purchasing a polyphenyl thermal insulation board and a perlite board, and cutting and assembling the polyphenyl thermal insulation board and the perlite board into required sizes; preparing an inner steel wire mesh, an outer steel wire mesh, a steel wire mesh frame web wire, a window frame mortar strip steel bar mesh welded with a force transmission steel plate, and prefabricating a horizontal countersunk head bridge-cut-off long self-tapping screw connecting piece and a combined countersunk head bridge-cut-off long self-tapping screw connecting piece;
secondly, mounting 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 a U-shaped steel wire, and separating the thickness of an inner mortar layer on the surfaces of the light steel sash and a dovetail groove of a polyphenyl insulation board through cushion blocks such as engineering plastics and the like and positioning the polyphenyl insulation board, the perlite board and the outer steel wire mesh; binding the window frame mortar strip steel bar mesh with the inner leaf steel wire mesh and the outer leaf steel wire mesh;
thirdly, sequentially penetrating horizontal web wires of the steel wire mesh frame and oblique web wires of the steel wire mesh frame through the perlite plates and the polyphenyl insulation boards, spot-welding two ends of the web wires of the steel wire mesh frame with the inner steel wire mesh and the outer steel wire mesh 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-cutoff self-tapping screw connecting piece and the combined bridge-cutoff self-tapping screw connecting piece are penetrated through the perlite plates and the polyphenyl insulation boards in sequence in a long and self-tapping mode, 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;
and fourthly, pouring the mortar surface layers of the inner steel wire mesh and the outer steel wire mesh and the mortar strip of the window frame with the groove, and maintaining. Connecting the window frame mortar strip with a window opening connecting beam through a self-tapping nail cluster block connecting point;
fifthly, pouring shear wall concrete by taking the steel wire mesh frame mortar-perlite-polyphenyl thermal insulation structure as a bottom die, and maintaining;
sixthly, processing a composite wall outer leaf steel wire mesh, a composite wall perlite plate, a composite wall polyphenyl insulation board and a concrete mortar inner leaf reinforcing mesh; welding one ends of horizontal and oblique web wires of the steel wire mesh frame with the outer leaf steel wire meshes of the composite wall, and sequentially penetrating through the perlite plates and the polyphenyl insulation plates to be welded with the inner leaf steel bar meshes; welding a force transmission steel plate on the concrete mortar inner leaf steel bar net;
seventhly, pouring composite wall mortar outer leaves and composite wall concrete mortar inner leaves in a factory, plastering mortar strips after the composite wall mortar outer leaves are reserved, and reserving grooves on the outer sides of force transmission steel plates welded on the steel bar net by the composite wall concrete mortar inner leaves;
eighthly, maintaining and supporting the steel wire mesh frame mortar-perlite-polyphenyl thermal insulation composite filled wall, and transporting the composite filled wall to a construction site;
step nine, overlapping the short-limb shear wall with horizontal steel bars of adjacent connecting beams, binding vertical constructional steel bars and tie steel bars, pouring a strip-shaped inner side formwork between the short-limb shear wall and the adjacent connecting beams after vertical concrete, and using the outer side polyphenyl insulation board as a formwork;
tenth, paving a mortar cushion layer on the lower floor; and (3) butting the longitudinal stressed steel bars at the tops of the lower short-leg shear wall and the coupling beam with the grouting sleeves at the bottoms of the upper shear wall and the coupling beam, butting the rabbet of the polyphenyl thermal insulation boards of the upper wall board and the lower wall board and the mortar strip, pouring grouting materials into the sleeves through the reserved holes, binding additional steel wire meshes in the horizontal reserved strips, and leveling the horizontal mortar strip between the upper wall board and the lower wall board by adopting high-performance thermal insulation mortar. Pouring concrete in vertical post-pouring strips of adjacent walls and connecting beams, binding additional steel wire meshes in vertical reserved strips, and trowelling vertical mortar strips between the left wallboard and the right wallboard by adopting high-performance thermal insulation mortar;
step ten, connecting the composite filling wall with the upper connecting beam, the lower connecting beam, the left short-leg shear wall and the right short-leg shear wall through the inner-leaf reinforced concrete mortar surface layer self-tapping nail cluster connecting structure; binding a reinforcing steel bar mesh in a smearing strip after the outer leaves of the composite filler wall steel wire mesh mortar and the outer leaves of the short-limb shear wall steel wire mesh mortar, and trowelling by adopting high-performance heat-insulating mortar;
and a twelfth step of dismantling the template, painting the surface layers of the shear wall and the outer leaf mortar of the filler wall by using waterproof paint, and painting the inner surface of the short-leg shear wall and the inner leaf of the reinforcing mesh mortar of the composite filler wall by using inner wall paint.
Adopt the produced beneficial effect of above-mentioned technical scheme to 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, the perlite plate has the advantages of good fire resistance and heat insulation performance, and the high-performance mortar layer has good structure, water resistance and weather resistance.
2. The structure of the light steel combined truss and the bearing steel wire mesh frame can effectively resist the downward shearing deformation of a mortar layer under long-term load, and the shearing deformation can be controlled on each floor and is not transmitted downwards, so that the technical bottleneck problem that the deformation of an ultra-thick heat-insulating layer is difficult to control under long-term load is solved.
3. The light steel sash steel wire mesh internal and external leaf mortar surface layer sandwich perlite-polyphenyl thermal insulation composite wall section between the short-limb shear wall and the window opening overcomes the defects that the weight of a light wall board filled in the wall section between the short-limb shear wall and the window opening is relatively large and the thermal insulation is relatively poor.
4. The self-tapping nail cluster connecting node solves the problem of connection between a fine and dense reinforcing mesh in a She Shajiang layer in the composite filler wall and a coupling beam and a short-limb shear wall, and has good stress performance. Meanwhile, the downward shearing deformation of the mortar layer around the window frame under long-term load can be effectively resisted, and the gravity load of the short-limb shear wall external thermal insulation structure is controlled on the layer and is not transmitted downwards.
5. The rear smearing strip of the steel wire mesh mortar in the combined connection structure enhances the integrity of a mortar surface layer of the wallboard, solves the problem of splicing and connecting the traditional heat-insulation boards, improves the waterproof performance of the wallboard, and enables the heat-insulation structure of the wallboard to have good weather resistance. The heated board can regard as the template in post-cast strip, makes things convenient for the assembly construction.
Drawings
FIG. 1 is a schematic view of a connection structure of a short-leg shear wall and a surrounding wall;
FIG. 2 is a schematic view of the cross-sectional structure 1-1 in 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 configuration 7-7 of FIG. 1;
FIG. 9 is a schematic view of the cross-sectional structure of FIG. 1 taken along line 8- -8;
FIG. 10 is a schematic view of the construction of a short-leg shear wall;
FIG. 11 is a schematic view of the connection structure of the combined countersunk head broken bridge long tapping screw connecting piece in the 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 head broken bridge long tapping screw connecting piece in the wall body;
FIG. 14 is a schematic view of the cross-sectional configuration 2-2 of FIG. 13;
FIG. 15 is a schematic view of the connection and arrangement of horizontal and diagonal steel wire mesh frames in a wall;
FIG. 16 is a schematic view of the cross-sectional configuration 3-3 of FIG. 15;
FIG. 17 is a schematic view showing a connection structure of upper and lower walls;
FIG. 18 is another view of the connection structure of the upper and lower walls;
FIG. 19 is a schematic view of the splicing connection of left and right walls;
FIG. 20 is a schematic view of the connection of the composite infill wall to the short-leg shear wall composite insulation wall section;
FIG. 21 is a schematic structural view of the prefabricated coupling beam composite wall for the upper and lower window openings;
FIG. 22 is a further view of the structure of the prefabricated coupling beam composite wall for the upper and lower openings;
FIG. 23 is a schematic view of the connection structure of the composite infilled wall and the upper and lower coupling beams;
in the figure: 1. short-limb shear walls; 2. distributing steel bars on the short-limb shear wall; 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 coupling beam; 7. a girder-connected reinforcement cage; 8. the connecting beam is vertically connected with a steel bar; 9. a light steel sash vertical keel; 10. a light steel sash transverse keel; 11. an inner leaf mortar layer; 12. inner leaf steel wire mesh; 13. a U-shaped steel wire; 14. a polyphenyl thermal insulation board; 15. perlite board; 16. an outer leaf mortar layer; 17. an outer leaf steel wire mesh; 18. a window frame mortar strip; 19. a mortar strip reinforcing mesh; 20. self-tapping nail cluster nodes at the window opening; 21. composite wall mortar outer leaves; 22. composite wall outer leaf steel wire mesh; 23. a composite wall perlite board; 24. a composite wall polyphenyl thermal insulation board; 25. inner leaves of composite wall concrete mortar; 26. concrete mortar inner leaf reinforcing mesh; 27. the self-tapping nail cluster block of the composite wall is connected with the node; 28. a horizontal countersunk head bridge-breaking long self-tapping screw connecting piece; 29. a combined countersunk head broken bridge long self-tapping screw connecting piece; 30. horizontal web wires of a steel wire mesh frame; 31. oblique abdominal wires of the steel wire mesh frame; 32. smearing the outer leaf steel wire mesh cement mortar layer with strips; 33. cement-based cement paste; 34. a groove and a tongue of the polyphenyl insulation board; 35. a shear wall mortar cushion layer; 36. grouting material; 37. and (5) post-pouring the concrete strips.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The main structure of the wall body comprises:
the light steel sash steel wire mesh frame mortar surface layer-perlite-polyphenyl heat preservation assembled short-limb shear wall mainly comprises a steel wire mesh mortar-perlite surface layer structure, a bearing steel wire mesh frame, a light steel combined truss and an assembled short-limb concrete shear wall. The steel wire mesh mortar-perlite surface layer is a steel wire mesh mortar layer and a perlite fireproof layer which are 25mm thick respectively, and has good shock resistance, fire resistance, heat insulation, water resistance and weather resistance. The bearing steel wire net frame is composed of an outer steel wire net, an inner steel wire net, horizontal web wires and web wires, wherein the spot welding distance of the outer steel wire net and the inner steel wire net is 200 x 200mm, the diameter of each horizontal web wire is 2mm, the web wires are inclined upwards by 45 degrees, the horizontal web wires and the web wires are inclined upwards by 45 degrees, penetrate through a 25mm thick perlite layer and a 200mm thick polyphenyl layer with a 5mm thick cement adhesive bonding tape dovetail groove, and then extend into the shear wall concrete horizontal projection by 60mm. The light steel combined truss is composed of a steel wire mesh mortar layer, a bridge-cutoff self-tapping screw web member and a light steel sash chord member, and is composed of a steel wire mesh mortar layer strip outer chord of 25mm thickness, a light steel sash vertical C-shaped steel inner chord, a countersunk head bridge-cutoff long self-tapping screw horizontal web member with the diameter not less than 5mm and a web member which slants upwards by 45 degrees; the light steel combined truss can effectively control the shear deformation caused by the self weight of the mortar surface layer on each floor and does not transmit downwards.
The light steel sash steel wire mesh frame inner and outer leaf mortar surface layer sandwich perlite-polyphenyl heat preservation composite wall section is a semi-embedded polyphenyl sandwich composite wall plate, the outer side of the light steel sash steel wire mesh frame inner and outer leaf mortar surface layer sandwich perlite-polyphenyl heat preservation composite wall section is flush with the outer leaves of the steel wire mesh of the assembled short-limb shear wall, and the inner side of the light steel sash steel wire mesh frame inner and outer leaf mortar surface layer sandwich perlite-polyphenyl heat preservation composite wall section is flush with the inner surfaces of the short-limb shear wall and the connecting beam. The outer leaf of a 25mm steel wire mesh mortar layer, a 25mm perlite plate, a 420mm polyphenyl insulating layer and a 50mm steel mesh concrete mortar inner leaf are sequentially arranged from the outdoor to the indoor. 150mm of rear mortar smearing strips are left between the outer leaves of the steel mesh mortar and the adjacent two steel mesh mortar layers of the adjacent short-limb shear wall, and the steel meshes in the rear mortar smearing strip areas are lapped. The steel bar mesh concrete mortar inner leaf is connected with the upper and lower connecting beams and the left and right composite shear walls through a self-tapping nail cluster block connecting structure.
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 steel bar sleeves, and the short-limb shear wall and the connecting beam are assembled by adopting post-cast concrete strips; the upper, lower, left and right light steel combination trusses support the connection between the steel wire mesh frame mortar-perlite-polyphenyl heat preservation systems, the perlite layers are butted, the polyphenyl layers are connected by a tongue and groove, a 150mm rear mortar smearing strip is left between every two adjacent steel wire mesh mortar layers, and the steel wire meshes in the rear mortar smearing strip area are lapped; the composite heat-insulating structure of the window opening, the connecting beam, the self-tapping screw cluster connecting structure of the short-limb shear wall and the self-tapping screw connecting structure of the composite filler wall, the short-limb shear wall and the connecting beam.
The specific connection structure of each configuration is as follows:
fabricated concrete short-leg shear wall: the shear wall steel reinforcement cage is formed by binding short-limb shear walls 1, short-limb shear wall distributed steel reinforcements 2 and short-limb shear wall vertical connecting reinforcements 3 through tie reinforcements, grouting sleeves 4 are connected to the lower portions of the short-limb shear wall vertical connecting reinforcements 3, and the connecting lengths, extending out of the short-limb shear wall vertical connecting reinforcements 3, of the tops of the wall boards are connected with the assembled concrete floor slabs and the grouting sleeves 4 of the previous layer. The light steel sash is arranged outside the short-limb shear wall distribution steel bars 2. And after concrete is poured, forming the fabricated grouting sleeve concrete short-limb shear wall with the light steel sash.
Connecting the beam: the upper connecting beam 5 positioned on the upper side of the window opening and the lower connecting beam 6 positioned on the lower side of the window opening are formed by pouring concrete through the connecting beam reinforcement cage 7 bound inside the upper connecting beam and the connecting beam vertical connecting reinforcement 8 on the inner side of the reinforcement cage.
Light steel sash: the light steel sash vertical keel is formed by welding a light steel sash transverse keel 10 and a light steel sash vertical keel 9, a light steel sash self-tapping nail hole is formed in a web plate of the light steel sash, and a flange groove of the light steel sash is formed in a flange.
Inner leaf wire mesh mortar layer: the light steel sash frame is formed by pouring an inner sash mortar layer 11 by an inner sash steel wire mesh 12, spot welding is carried out on a U-shaped steel wire 13 flange and the inner sash steel wire mesh 12, and a web member is welded with the light steel sash frame.
The steel wire mesh frame mortar-perlite-polyphenyl heat preservation structure comprises: the steel wire mesh frame mortar-perlite-polyphenyl thermal insulation structure is connected with the fabricated concrete short-leg shear wall, the upper connecting beam and the lower connecting beam through light steel combined trusses and bearing steel wire mesh frames.
Bearing the steel wire net frame: the shear wall concrete is composed of an outer leaf steel wire mesh 17, an inner leaf steel wire mesh 12 spot-welded steel wire mesh frame horizontal web wires 30 and steel wire mesh frame inclined web wires 31, wherein the steel wire mesh frame horizontal web wires 30 and the steel wire mesh frame inclined web wires 31 penetrate through perlite plates 15 and polyphenyl insulation boards 14 and then extend into the shear wall concrete. Thereby realizing the pulling and the bonding of the steel wire mesh frame mortar-perlite-polyphenyl thermal insulation structure and the concrete shear wall.
Light steel composite truss: the truss is composed of a steel wire mesh frame outer mortar surface layer formed by an outer leaf mortar layer 16 and an outer leaf steel wire mesh 17, a horizontal countersunk head bridge-cut-off long self-tapping screw connecting piece 28, a combined countersunk head bridge-cut-off long self-tapping screw connecting piece 29 and chords. The light steel combined truss is composed 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, an inner chord of a light steel sash transverse keel 10, a horizontal countersunk head bridge-cut long self-tapping screw connecting piece 28 web member and a combined countersunk head bridge-cut 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 board 14 to self-tap and connect the light steel sash vertical keel 9 and the light steel sash transverse keel 10.
The light steel sash steel wire mesh frame inner and outer leaf mortar surface layer sandwich perlite-polyphenyl heat preservation composite wall is composed of an outer leaf steel wire mesh mortar surface layer consisting of composite wall mortar outer leaves 21 and composite wall outer leaf steel wire meshes 22, an inner leaf steel wire mesh mortar layer consisting of composite wall concrete mortar inner leaves 25 and concrete mortar inner leaf steel wire meshes 26, a composite wall perlite plate 23 and a composite wall polyphenyl heat preservation plate 24, wherein one end of each of the composite wall inner steel wire mesh frame horizontal belly wires 30 and the steel wire mesh frame inclined belly wires 31 is welded with the composite wall outer leaf steel wire meshes 22, then sequentially penetrates through the perlite plate and the polyphenyl heat preservation plate, and the other end of each of the composite wall inner steel wire mesh frames is welded with the concrete mortar inner leaf steel wire meshes 26 so as to effectively tie each surface layer of the composite wall.
Window opening self-tapping nail cluster piece connection structure: a mortar strip reinforcing mesh 19 is arranged in the window frame mortar strip 18, the mortar strip reinforcing mesh 19 is in lap joint with the inner leaf steel wire mesh 12 and the outer leaf steel wire mesh 17, a force transmission steel plate is welded on the mortar strip reinforcing mesh 19 and is in butt joint with C-shaped steel of the window frame light steel sash, and a self-tapping screw penetrates through the connecting steel plate to be in self-tapping connection with the mortar strip force transmission steel plate and the window frame light steel sash. And finally, adopting mortar to trowel the mortar strip groove.
The combined connection structure comprises: comprises a structure that upper and lower short-leg shear wall distributed steel bars 2 are connected with grouting material 36 injected into a grouting sleeve 4; a shear wall connecting structure formed by the short-limb shear wall and the connecting beam concrete post-cast strip 37; a heat-insulating layer connecting structure formed by smearing cement-based adhesive cement 33 on a polyphenyl heat-insulating plate tongue-and-groove 34; the shear wall outer leaf steel wire mesh cement mortar layer rear smearing strip 32 is connected with the connecting structures of the outer leaf steel wire mesh mortar layers of the upper wall plate, the lower wall plate, the left wall plate and the right wall plate; the composite wall and shear wall outer leaf steel wire mesh cement mortar layer is constructed by smearing a strip 32; and the self-tapping nail cluster connecting node 27 of the composite wall of the reinforcing mesh concrete mortar inner leaf and the upper and lower connecting beams of the composite infilled wall.
Short limb shear force wall 1, for assembled reinforced concrete L shape short limb shear force wall, wallboard thickness is 250mm, and the single limb width is 1250mm, width-thickness ratio H/B =8. The short-limb shear wall distributed steel bars 2 adopt double rows of reinforcing bars: the diameter of the horizontally distributed reinforcing steel bars is phi 10mm, the distance is 200mm, the diameter of the vertically distributed reinforcing steel bars is phi 10mm, the distance is 200mm, the thickness of the net protective layer is 20mm, and phi 6mm tie bars are arranged at intervals of 400 mm; the grouting sleeve 4 is adopted for assembly and connection, and the phi 16 steel bars which are symmetrically arranged are adopted as the short-limb shear wall vertical connecting steel bars 3 of the upper and lower short-limb shear walls. The top of the short-limb shear wall vertical connecting steel bar 3 protrudes 240mm out of the wallboard and is connected with the floor slab and the upper wallboard. And after the horizontally distributed reinforcing steel bars of the short-limb shear wall protrude the end part of the wallboard by 280mm and are lapped with the longitudinal reinforcing steel bars of the adjacent coupling beam, a concrete post-pouring strip 37 is poured.
The upper connecting beam 5 and the lower connecting beam 6 are connecting structures between two wall limbs and are respectively positioned at the upper part and the lower part of the window opening, the height of the section of the upper connecting beam 5 is the distance from the upper edge of the window opening to the top of the concrete of the wallboard, the height of the lower connecting beam 6 is 450mm, and the width of the section is equal to the thickness of the wall body. The inside of the connecting beam is provided with a phi 10 longitudinal steel bar and a phi 8 stirrup. The longitudinal reinforcement and the stirrups form a girder-connecting reinforcement cage 7. And connecting beam vertical connecting steel bars 8 with phi 16 are arranged between the 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 the grouting sleeve 5 at the bottom of the vertical connecting steel bars of the lower connecting beam 6 of the upper wallboard. Light steel sash is arranged in the upper and lower connecting beams.
The light steel sash vertical keel 9 and the light steel sash transverse keel 10 are formed by welding C-shaped steel with vertical and horizontal spacing not greater than 800, the light steel sash is respectively connected with the steel wire mesh and the light steel sash by spot welding through U-shaped steel wires 13 with the diameter of 2mm at the position 10mm away from the inner leaf steel wire mesh 12, and the spacing between the horizontal spot welding and the vertical spot welding is not greater than 200mm; the height of the C-shaped steel section of the keel is 70mm, the width of the C-shaped steel section of the keel is 50mm, the thickness of the plate is not less than 2mm, and the flange grooves of the light steel sash with the width of 140mm and the height of 60mm are formed on the light steel sash, 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 section of the light steel sash vertical keel 9 is anchored into the short-limb shear wall 1 and the connecting beam from the position which is 10mm away from the clear distance of the outside distributed steel bars between the horizontal steel bars and the vertical steel bars of the shear wall and the connecting beam. After the shear wall concrete is poured, the 10 mm-through high section of the light steel sash with the convex steel section is embedded into the shear wall concrete by 10mm, and the convex steel section is anchored in the shear wall concrete by 60mm. In order to facilitate the connection of the tapping screw with the web plate of the light steel sash keel, round holes smaller than the diameter of the tapping screw are formed in the web plates of the light steel sash vertical keel 9 and the light steel sash transverse keel 10 so as to facilitate the tapping screw to pass through.
The inner leaf mortar layer 11 and the inner leaf steel wire mesh 12 are mortar layers between a dovetail groove of a polyphenyl insulation board and a short-limb shear wall 1, an upper connecting beam 5 and a lower connecting beam 6, the net distance between the inner leaf steel wire mesh 12 and a polyphenyl insulation board 14 with the dovetail groove is 10mm, and a gap between the inner leaf steel wire mesh 12 and the dovetail groove of the polyphenyl insulation board is smoothed by adopting mortar with a pitted surface and the thickness of 14mm, the strength of which is not lower than C20; the U-shaped steel wire 13 is a structure for connecting the inner leaf steel wire mesh 12 and the light steel sash, the bent flange of the U-shaped steel wire is spot-welded with the steel wire of the inner leaf steel wire mesh 12, and the web members are welded with the light steel sash vertical keel 9 and the light steel sash transverse keel 10.
And the polyphenyl insulation board 14 is a polyphenyl insulation board with a dovetail groove at the joint of the polyphenyl insulation board and the inner blade mortar layer 11.
The outer leaf mortar layer 16 is a mortar layer with the thickness of 25mmm and the strength of the outer side of the wallboard not lower than C20, an outer leaf steel wire mesh 17 with the diameter of 2mm and the distance of 50mm is arranged in the outer leaf mortar layer 16, and a 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 leaf mortar layer 11 and the outer leaf mortar layer 16, the thickness of the window frame edge sealing concrete mortar strip is 50mm, a mortar strip reinforcing mesh 19 with the diameter of 4mm and the interval of 200mm is arranged inside the window frame edge sealing concrete mortar strip, the mortar strip reinforcing mesh 19 is embedded into the inner leaf mortar connecting layer 12 and the outer leaf mortar layer 17100mm, and is lapped and bound with the inner leaf mortar layer steel wire mesh 13 and the outer leaf steel wire mesh 18. And a self-tapping screw penetrates through the connecting steel plate with the bolt hole, the self-tapping screw drills into the force transmission steel plate welded on the mortar strip steel bar net and the light steel sash at the window frame, and high-performance mortar is adopted to fill and level the groove of the mortar strip at the window frame mortar strip at the force transmission steel plate of the mortar strip, so that the self-tapping screw cluster node 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, a composite wall mortar outer leaf steel wire mesh 22 with the diameter of 2mm and the distance of 50mm is arranged in the composite wall mortar outer leaf 21, and a mortar net protection layer of the steel wire mesh is 10mm.
The perlite plate 23 and the polyphenyl thermal insulation plate 24 are respectively a fire-proof layer and a thermal insulation layer of the composite infilled wall.
The composite wall concrete mortar inner leaf 25 is internally provided with concrete mortar inner leaf reinforcing meshes 26 with the diameter of 4mm and the distance of 200mm, and the surface of the composite wall concrete mortar inner leaf 25 is flush with the inner surfaces of the short-limb shear wall and the coupling beam.
The self-tapping nail cluster connecting node 27 of the composite wall is a connecting node structure of the concrete mortar inner blade and the short-limb shear wall of the composite wall and a connecting beam. The left and right ends of the inner side of the composite wall reinforcing mesh concrete mortar are connected with the short-limb shear wall, and the force transmission steel plates welded on the horizontally distributed reinforcing steel bars of the short-limb shear wall and the force transmission steel plates welded on the concrete mortar inner leaf reinforcing mesh 26 are connected by self tapping screws through perforated connecting steel plates. The upper end and the lower end of the inner side of the composite wall reinforcing mesh concrete mortar are connected with the coupling beam, the self-tapping screw penetrates through the connecting steel plate with the self-tapping screw hole, and the self-tapping screw is connected with the force transmission steel plate welded on the composite wall inner leaf reinforcing mesh and the force transmission steel plate welded on the coupling beam stirrup, so that a self-tapping screw block connecting joint is formed.
The horizontal countersunk head broken bridge long self-tapping screw connecting piece 28 and the combined countersunk head broken bridge long self-tapping screw connecting piece 29 are web members of the light steel combined truss. Sinking the connector into a countersunk fiber composite connector with the size not less than 50, drilling a perlite-polyphenyl insulating layer and self-tapping connection light steel sash. The countersunk head fiber composite connecting piece is a connecting piece formed in one step by 3X 60 outer square plates, 4X 46 square plates, a central hollow round rod with 14mm of outer diameter and 10mm of inner diameter and 50mm of length, and a central hollow round rod with 14mm of outer diameter and 6mm of inner diameter and 20mm of length. The angle between the square plate of the countersunk head fiber composite connecting piece of the horizontal countersunk head bridge-cut-off long self-tapping screw connecting piece 28 and the hollow round rod is 90 degrees, and the angle between the rectangular plate of the combined countersunk head bridge-cut-off long self-tapping screw connecting piece 29 and the hollow round rod is divided into 90 degrees passing through the horizontal long self-tapping screw and 45 degrees passing through the oblique upward long self-tapping screw; the diameter of a nail head of the steel self-tapping nail is 10mm, the diameter of a nail rod is 6mm, and the whole length of the steel self-tapping nail is provided with threads. The top and the bottom of the light steel sash vertical keel 9 are provided with horizontal countersunk head bridge-cut-off long self-tapping screw connecting pieces 28, and the middle part is provided with a combined countersunk head bridge-cut-off long self-tapping screw connecting piece 29. The horizontal countersunk head bridge-cut-off long self-tapping screw connecting pieces 24 are arranged on the light steel sash transverse keel 10, and the distance is not more than 800mm.
The horizontal web wires 30 and the oblique web wires 31 of the steel wire frame are supporting reinforcing wires for connecting the inner leaf steel wire mesh 12 and the outer leaf steel wire mesh 17. The steel wire mesh frame is composed of inner leaf steel wire meshes 12, outer leaf steel wire meshes 17, horizontal web wires 30 of the steel wire mesh frame with the spot welding distance of 200mm and the diameter of 2mm and oblique web wires 31 of the steel wire mesh frame with the angle of 45 degrees upwards, wherein the web wires penetrate through a perlite plate 15 and a polyphenyl insulation board 14 with dovetail grooves bonded on an inner leaf mortar layer 11 and then extend into a short-limb shearing force 1 to horizontally project for 60mm. One ends of the horizontal web wires 30 of the steel wire net rack and the oblique web wires 31 of the steel wire net rack in the composite filled wall are welded with the outer leaf steel wire mesh 22 of the composite wall, penetrate through the perlite plates 23 of the composite wall and the polyphenyl insulation board 24 of the composite wall, and the other ends are welded with the reinforcing mesh 26 of the inner leaf concrete mortar, and are anchored in the inner leaf concrete mortar 25 of the composite wall.
The outer leaf steel mesh cement mortar layer rear smearing belt 32 is a connecting structure of the upper, lower, left and right outer steel mesh mortar layers of the outer heat-insulating layer of the short-limb shear wall board, and is also a connecting structure of the outer leaf steel mesh mortar of the composite filler wall and the outer heat-insulating layer of the short-limb shear wall board. After the 75mm wide outer mortar surface layer is reserved on the outer leaves of the steel wire mesh mortar layer, after the wallboard is butted, the connecting position of the outer steel wire mesh mortar layer is 150mm wide, the steel wire mesh is reinforced at intervals of 150mm and 2mm in diameter, high-performance heat-insulation mortar is coated in the strips, the integrity of the connecting nodes of the wallboard is ensured by the aid of the strips 32 on the outer leaves of the steel wire mesh cement mortar layer, and the wallboard has good waterproofness and improves weather resistance.
The cement-based adhesive cement 33 is an inorganic bonding material coated on 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 board.
The shear wall mortar cushion layer 35 is a 20mm thick mortar cushion layer between the floor slab and the short-limb shear wall on the floor slab.
The grouting material 36 is a high-performance cement-based bonding material in the grouting sleeve 4.
The concrete post-pouring strip 37 is an assembly connection structure of a short-limb shear wall and a connecting beam, horizontally distributed reinforcing steel bars of the short-limb shear wall protrude from the left end and the right end of a wallboard by 280mm, are lapped with adjacent connecting beam longitudinal bars, are bound with vertical structural bars and tie reinforcing steel bars, and then are poured with the concrete post-pouring strip 37, so that the assembly connection of the left wallboard and the right wallboard is completed.
When a wall body is manufactured, firstly, according to the design of a building structure, determining the arrangement positions and the specific sizes of a light steel combined truss for bearing a steel wire mesh frame mortar-perlite-polyphenyl heat-preservation short-limb shear wall and a connecting beam, determining the thicknesses and the reinforcing bars of the shear wall and the connecting beam, determining the thickness of a heat preservation layer according to the climatic conditions of a building region, determining the thickness of an outer steel mesh mortar surface layer and the thickness of a perlite plate according to the requirements of fire resistance, water resistance and weather resistance of the building, determining the thickness of an inner mortar surface layer according to the stress requirement of an outer heat preservation system, arranging light steel lattices, and designing the steel wire mesh frame and the light steel combined truss according to the stress requirement; and determining the size and thickness of the self-tapping nail cluster node steel plate, and the arrangement mode and number of the self-tapping nails. Determining relevant design parameters of the composite filler wall, and designing and checking stress calculation on the short-limb shear wall and the composite filler wall connection node structure; according to the design scheme, a detailed structural drawing is drawn, and prefabricated wall panel manufacturing, transportation and field assembly construction are carried out.
The method for supporting the steel wire net frame mortar-perlite-polyphenyl composite enclosure wall by the short-limb shear wall assembled light steel combined truss comprises the following steps:
firstly, processing and welding vertical and horizontal C-shaped steel of a light steel sash in a factory, binding a short-limb shear wall reinforcement cage and a coupling beam reinforcement cage, installing a grouting sleeve, purchasing a polyphenyl thermal insulation board and a perlite board, and cutting and assembling the polyphenyl thermal insulation board and the perlite board into required sizes; preparing an inner steel wire mesh, an outer steel wire mesh, a steel wire mesh frame web wire, a window frame mortar strip steel bar mesh welded with a force transmission steel plate, and prefabricating a horizontal countersunk head bridge-cut-off long self-tapping screw connecting piece and a combined countersunk head bridge-cut-off long self-tapping screw connecting piece;
secondly, mounting and positioning the light steel sash on a reinforcement cage of the short-limb shear wall, connecting an inner steel wire mesh to the light steel sash through a U-shaped steel wire, and positioning a polyphenyl insulation board, a perlite board and an outer steel wire mesh by separating the thickness of an inner mortar layer on the surfaces of the light steel sash and a dovetail groove of the polyphenyl insulation board through cushion blocks such as engineering plastics; binding the window frame mortar strip steel bar mesh with the inner leaf steel wire mesh and the outer leaf steel wire mesh;
thirdly, sequentially penetrating horizontal web wires of the steel wire mesh frame and oblique web wires of the steel wire mesh frame through the perlite plates and the polyphenyl insulation boards, spot-welding two ends of the web wires of the steel wire mesh frame with the inner steel wire mesh and the outer steel wire mesh 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-cutoff self-tapping screw connecting piece and the combined bridge-cutoff self-tapping screw connecting piece are penetrated through the perlite plates and the polyphenyl heat-insulation plates in sequence in a long self-tapping mode, 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;
and fourthly, pouring the mortar surface layers of the inner steel wire mesh and the outer steel wire mesh and the mortar strip of the window frame with the groove, and maintaining. Connecting the window frame mortar strip with a window opening connecting beam through a self-tapping nail cluster block connecting point;
fifthly, pouring shear wall concrete by taking the steel wire mesh frame mortar-perlite-polyphenyl thermal insulation structure as a bottom die, and maintaining;
sixthly, processing a composite wall outer leaf steel wire mesh, a composite wall perlite plate, a composite wall polyphenyl thermal insulation plate and a concrete mortar inner leaf reinforcing mesh; welding one end of a horizontal and oblique belly wire of a steel wire mesh frame with an outer leaf steel wire mesh of the composite wall, and sequentially penetrating a perlite plate and a polyphenyl insulation board to be welded with an inner leaf steel wire mesh; welding a force transmission steel plate on the concrete mortar inner leaf steel bar net;
seventhly, pouring composite wall mortar outer leaves and composite wall concrete mortar inner leaves in a factory, plastering mortar strips after the composite wall mortar outer leaves are reserved, and reserving grooves on the outer sides of the force transmission steel plates welded on the steel bar net by the composite wall concrete mortar inner leaves;
eighthly, maintaining and supporting the steel wire mesh frame mortar-perlite-polyphenyl thermal insulation composite filling wall, and transporting to a construction site;
the ninth step, overlapping the short-limb shear wall with the horizontal steel bars of the adjacent connecting beam, binding the vertical constructional steel bars and the tie steel bars, pouring a strip inner side supporting template between the short-limb shear wall and the adjacent connecting beam in the vertical concrete post-pouring way, and using the outer side polyphenyl thermal insulation board as the template;
step ten, paving a mortar cushion layer on the lower floor; the method comprises the steps of butt-jointing a longitudinal stressed steel bar at the top of a lower short-limb shear wall and a coupling beam with a grouting sleeve at the bottom of an upper shear wall and a coupling beam, butt-jointing a rabbet of a polyphenyl thermal insulation board of an upper wallboard and a rabbet of a lower wallboard and a mortar strip at the bottom of the coupling beam, pouring grouting materials into the sleeves through reserved holes, binding an additional steel wire mesh in a horizontal reserved strip, and troweling the horizontal mortar strip between the upper wallboard and the lower wallboard by adopting high-performance thermal insulation mortar. Pouring concrete in vertical post-pouring strips of adjacent walls and connecting beams, binding additional steel wire meshes in vertical reserved strips, and trowelling vertical mortar strips between the left wallboard and the right wallboard by adopting high-performance thermal insulation mortar;
step eleven, connecting the composite filler wall with the upper and lower connecting beams and the left and right short-limb shear walls through the inner-leaf reinforcing mesh concrete mortar surface layer self-tapping nail cluster connecting structure; binding a reinforcing steel bar mesh in a smearing strip after the outer leaves of the composite filler wall steel wire mesh mortar and the outer leaves of the short-limb shear wall steel wire mesh mortar, and trowelling by adopting high-performance heat-insulating mortar;
and a twelfth step of dismantling the template, painting the surface layers of the shear wall and the outer leaf mortar of the filler wall by using waterproof paint, and painting the inner surface of the short-leg shear wall and the inner leaf of the reinforcing mesh mortar of the composite filler wall by using inner wall paint.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered as the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (10)
1. Short limb shear force wall assembled lightweight steel combination truss bearing wire net rack mortar-pearlite-polyphenyl composite enclosure wall, its characterized in that includes:
the assembled concrete short-limb shear wall is formed by binding short-limb shear walls, short-limb shear wall distributed reinforcing steel bars and short-limb shear wall vertical connecting reinforcing steel bars through tie reinforcing steel bars to form a shear wall reinforcing steel bar cage, wherein the lower parts of the short-limb shear wall vertical connecting reinforcing steel bars are connected with grouting sleeves, and the parts of the short-limb shear wall vertical connecting reinforcing steel bars, which extend out of the top of a wallboard, are connected with an assembled concrete floor slab and a grouting sleeve of the upper layer;
the connecting beams comprise upper connecting beams and lower connecting beams, and the upper connecting beams positioned on the upper side of the window opening and the lower connecting beams positioned on the lower side of the window opening are formed by pouring concrete through connecting beam reinforcement cages bound inside the connecting beams and connecting beam vertical connecting reinforcements on the inner sides of the reinforcement cages;
the light steel sash is arranged on the outer side of the distributed steel bars of the short-limb shear wall and is formed by welding a light steel sash vertical keel and a light steel sash transverse keel, a web plate of the light steel sash is provided with a light steel sash self-tapping nail 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 the inner leaf mortar layer through the inner leaf steel wire mesh, the flange of the U-shaped steel wire is in spot welding with the inner leaf steel wire mesh, and the web member is welded with the light steel sash;
the steel wire mesh 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, an outer leaf mortar layer and a steel wire mesh mortar surface layer consisting of an outer leaf steel wire mesh, wherein the polyphenyl thermal insulation board dovetail groove is mechanically occluded with an inner leaf mortar connecting layer, and the steel wire mesh frame mortar-perlite-polyphenyl thermal insulation structure is connected with the assembled concrete short-limb shear wall, the upper connecting beam and the lower connecting beam through a light steel combined truss and a bearing steel wire mesh frame;
the bearing steel wire mesh frame is composed of an outer leaf steel wire mesh, an inner leaf steel wire mesh spot welding steel wire mesh frame horizontal web wires and steel wire mesh frame inclined web wires, and the steel wire mesh frame horizontal web wires and the steel wire mesh frame inclined web wires penetrate through the perlite plates and the polyphenyl insulation boards and then extend into the shear wall concrete, so that the steel wire mesh frame mortar-perlite-polyphenyl insulation structure and the concrete shear wall are tied;
the light steel combined truss is composed of a steel wire mesh mortar layer strip outer chord formed by an outer leaf mortar layer and an outer leaf steel wire mesh, 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-cut-off long self-tapping screw connecting piece and a chord member of a combined countersunk head bridge-cut-off long self-tapping screw connecting piece; the bridge-cutoff self-tapping screw connecting piece drills through the perlite plate and the polyphenyl insulation board to self-tap and connect the light steel sash vertical keel and the light steel sash transverse keel;
the light steel sash steel wire mesh frame inner and outer leaf mortar surface layers sandwich the perlite-polyphenyl heat preservation composite wall, and the light steel sash steel wire mesh frame inner and outer leaf mortar surface layers are composed of outer leaf steel wire mesh mortar surface layers composed of composite wall mortar outer leaves and composite wall outer leaf steel wire meshes, inner leaf steel bar mesh mortar layers composed of composite wall concrete mortar inner leaves and concrete mortar inner leaf steel bar meshes, and composite wall perlite plates and composite wall polyphenyl heat preservation plates in the sandwich layers;
the outer leaf steel mesh cement mortar layer is coated with strips, which are the connecting structures of the upper and lower outer steel mesh mortar layers, the left and the right outer steel mesh mortar layers of the outer heat-insulating layer of the short-limb shear wall board and are also the connecting structures of the outer leaves of the composite filler wall steel mesh mortar and the outer heat-insulating layer of the short-limb shear wall board; after the wallboard is butted, the connecting position of the outer steel wire mesh mortar layer is a 150mm wide rear mortar layer, a 150mm wide reinforcing steel wire mesh with the distance of 50mm and the diameter of 2mm is arranged in the mortar layer, high-performance heat-insulation mortar is coated in the strips, the integrity of the connecting nodes of the wallboard is ensured by coating the strips after the outer leaf is a steel wire mesh cement mortar layer, and the waterproof wallboard has good waterproofness and improves the weather resistance of the wallboard;
the window hole self-tapping screw cluster block connecting structure is characterized in that a window frame mortar strip is internally provided with a mortar strip steel bar net, the mortar strip steel bar net is lapped with an inner leaf steel wire net and an outer leaf steel wire net, a force transmission steel plate is welded on the mortar strip steel bar net and is butted with C-shaped steel of a window frame light steel sash, a self-tapping screw penetrates through a connecting steel plate to be in self-tapping connection with the mortar strip force transmission steel plate and the window frame light steel sash, and finally mortar is used for leveling a mortar strip groove;
the combined connecting structure comprises an upper short-limb shear wall, a lower short-limb shear wall, a grouting sleeve and an inner grouting slurry connecting structure; the shear wall connection structure is formed by the short-limb shear wall and the connecting beam concrete post-cast strip; coating a heat-insulating layer connecting structure formed by cement-based mortar on the groove and the tongue of the polyphenyl heat-insulating plate; the connecting structure of the outer leaf steel wire mesh mortar layers of the shear wall, which are connected with the upper and lower wall boards and the left and right wall boards, is formed by smearing strips behind the outer leaf steel wire mesh cement mortar layers of the shear wall; smearing a strip structure on the composite wall and the shear wall outer leaf steel wire mesh cement mortar layer; and the reinforcing mesh concrete mortar inner leaf of the composite infilled wall and the composite wall self-tapping nail cluster connecting node of the upper connecting beam and the lower connecting beam;
the concrete post-pouring strip is an assembly connection structure of a short-limb shear wall and a connecting beam, wherein horizontally distributed reinforcing steel bars of the short-limb shear wall protrude from the left end and the right end of each wallboard by 280mm, are lapped with longitudinal bars of adjacent connecting beams, are bound with vertical structural bars and tie reinforcing steel bars, and are poured with the concrete post-pouring strip, so that the left wallboard and the right wallboard are assembled and connected.
2. The short-limb shear wall assembly type light steel combined truss bearing steel wire mesh frame mortar-perlite-polyphenyl composite enclosure wall as claimed in claim 1, wherein the short-limb shear wall is an assembly type reinforced concrete L-shaped short-limb shear wall, the thickness of the wall plate is 250mm, and the width of a single limb is 1250mm; the distributed reinforcing steel bars of the short-limb shear wall adopt double rows of reinforcing steel bars, the diameter of the horizontally distributed reinforcing steel bars is 10mm, the distance between the horizontally distributed reinforcing steel bars is 200mm, the diameter of the vertically distributed reinforcing steel bars is 10mm, the distance between the vertically distributed reinforcing steel bars is 200mm, the thickness of a net protective layer is 20mm, and tie reinforcing steel bars with the diameter of 6mm are arranged at intervals of 400 mm; adopting a grouting sleeve for assembly connection, and adopting symmetrically arranged steel bars with the diameter of 16mm as vertical connecting steel bars of the upper and lower short-limb shear walls; the top of the short-limb shear wall longitudinal connecting steel bar protrudes 240mm out of the wallboard and is connected with the floor slab and the upper wallboard; and after the horizontally distributed reinforcing steel bars of the short-limb shear wall protrude out of the end part of the wallboard by 280mm and the longitudinal reinforcing steel bars of the adjacent coupling beams are lapped, pouring a concrete post-pouring strip.
3. The short-limb shear wall assembled light steel combined truss bearing steel wire mesh frame mortar-perlite-polyphenyl composite enclosure wall as claimed in claim 1, wherein the upper connecting beam and the lower connecting beam are connecting structures between two wall limbs and are respectively positioned at the upper part and the lower part of the window hole, the height of the section of the upper connecting beam is the distance from the upper edge of the window hole to the top of the concrete of the wallboard, the height of the lower connecting beam is 450mm, and the width of the section is equal to the thickness of the wall body; a phi 10mm longitudinal steel bar and a phi 8mm stirrup are arranged inside the connecting beam; the longitudinal steel bars and the stirrups form a beam-connecting reinforcement cage; connecting beam vertical connecting steel bars with the diameter phi of 16 are arranged between the connecting beam longitudinal bars, 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 sash is arranged in the upper and lower connecting beams.
4. The short-limb shear wall assembly type light steel combined truss bearing steel wire mesh frame mortar-perlite-polyphenyl composite enclosure wall as claimed in claim 1, wherein the light steel sash vertical keel and the light steel sash transverse keel are formed by welding C-shaped steel with vertical and horizontal spacing not greater than 800, the light steel sash is respectively connected with the steel wire mesh and the light steel sash by adopting U-shaped steel wires with the diameter of 2mm in a position with the clear distance of 10mm from the inner leaf steel mesh in a spot welding manner, and the spacing between the horizontal and vertical spot welding is not greater than 200mm; the height of the C-shaped steel section of the keel is 70mm, the width of the C-shaped steel section of the keel is 50mm, the thickness of the plate is not less than 2mm, and flange grooves of the light steel sash with the width of 140mm and the height of 60mm are formed on the light steel sash, so that convex steel sections with the clear distance of 140mm, the height of 60mm and the width of 60mm are formed; the light steel sash vertical keel steel section is anchored into the short-limb shear wall and the connecting beam from the position which is 10mm away from the clear distance of the distributed steel bars on the outer side between the horizontal steel bars and the vertical steel bars of the shear wall and the connecting beam; after the shear wall concrete is poured, the 10 mm-through high section of the light steel sash with the convex steel section is embedded into the shear wall concrete by 10mm, and the convex steel section is anchored in the shear wall concrete by 60mm; in order to facilitate the connection of the web plate of the light steel sash keel by the tapping screw, round holes smaller than the diameter of the tapping screw are formed in the web plates of the light steel sash vertical keel and the light steel sash transverse keel so as to facilitate the penetration of the tapping screw.
5. The short-limb shear wall assembly type light steel combined truss bearing steel wire mesh frame mortar-perlite-polyphenyl composite enclosure wall as claimed in claim 1, wherein the inner leaf mortar layer and the inner leaf steel wire mesh are mortar layers among a polyphenyl insulation board dovetail groove, the short-limb shear wall, an upper connecting beam and a lower connecting beam, the net distance between the inner leaf steel wire mesh and the polyphenyl insulation board with the dovetail groove is 10mm, and a gap between the inner leaf steel wire mesh and the polyphenyl insulation board dovetail groove is smoothed by adopting mortar with the strength not lower than C20 and the thickness of 14mm with a pitted surface; the U-shaped steel wire is in a structure that the inner leaf steel wire mesh is connected with the light steel sash, the bent flange of the U-shaped steel wire is in spot welding with the inner leaf steel wire mesh, and the web members are welded with the light steel sash vertical keel and the light steel sash transverse keel.
6. The short-limb shear wall fabricated light-steel combined truss bearing steel wire mesh frame mortar-perlite-polyphenyl composite enclosure wall as claimed in claim 1, wherein the window frame mortar strip is a window frame edge sealing concrete mortar strip for connecting the inner leaf mortar layer and the outer leaf mortar layer, the thickness of the window frame mortar strip is 50mm, a mortar strip reinforcing mesh with the diameter of 4mm and the interval of 200mm is arranged inside the window frame mortar strip, the mortar strip reinforcing mesh is embedded into the inner leaf mortar connecting layer and the outer leaf mortar layer, and 17100mm of the mortar strip reinforcing mesh is lapped and bound with the inner leaf mortar layer steel wire mesh and the outer leaf steel wire mesh; the self-tapping nails penetrate through the connecting steel plates with the bolt holes, the self-tapping nails are drilled into the force transmission steel plates welded on the mortar strip steel bar net and the light steel sash lattices at the window frame, and high-performance mortar is adopted to fill and level the mortar strip grooves at the mortar strip force transmission steel plates at the window frame, so that the self-tapping nail cluster node at the window opening is formed.
7. The short-limb shear wall assembled light steel combined truss bearing steel wire mesh frame mortar-perlite-polyphenyl composite enclosure wall as claimed in claim 1, wherein the composite wall mortar outer leaf is a 25mm thick mortar layer with the outer side strength of a composite filling wallboard not lower than C20, the composite wall mortar outer leaf is internally provided with composite wall outer leaf steel wires with the diameter of 2mm and the interval of 50mm, and the mortar net protection layer of the steel wires is 10mm; the perlite plate and the polyphenyl insulation plate of the composite wall are respectively a fireproof layer and an insulation layer of the composite infilled wall; the concrete mortar inner leaf of the composite wall is internally provided with a concrete mortar inner leaf reinforcing mesh with the diameter of 4mm and the distance of 200mm, and the surface of the concrete mortar inner leaf of the composite wall is flush with the inner surfaces of the short-limb shear wall and the connecting beam.
8. The short-leg shear wall assembled light steel combined truss supporting steel wire mesh frame mortar-perlite-polyphenyl composite enclosure wall as claimed in claim 1, wherein the self-tapping nail cluster connecting node of the composite wall is a composite wall concrete mortar inner leaf, a short-leg shear wall and a coupling beam connecting node structure; the left end and the right end of the inner side of the composite wall reinforcing mesh concrete mortar are connected with the short-limb shear wall, and a force transmission steel plate welded on horizontally distributed reinforcing steel bars of the short-limb shear wall and a force transmission steel plate welded on the concrete mortar inner leaf reinforcing mesh are in self-tapping connection by self-tapping screws through perforated connecting steel plates; the upper end and the lower end of the inner side of the composite wall reinforcing mesh concrete mortar 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 screw is connected with the force transmission steel plate welded on the composite wall inner leaf reinforcing mesh and the force transmission steel plate welded on the connecting beam stirrup, 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 a countersunk head fiber composite connecting piece with the size not less than 50mm, drilling a perlite-polyphenyl insulating layer and self-tapping connection light steel sash into the connecting piece; the countersunk head fiber composite connecting piece is a connecting piece formed in one step by an outer square plate with the thickness of 3mmX60mmX60mm, a square plate with the thickness of 4mmX46mmX46mm, a central hollow round rod with the outer diameter of 14mm, the inner diameter of 10mm and the length of 50mm, and a central hollow round rod with the outer diameter of 14mm, the inner diameter of 6mm and the length of 20 mm; the angle between the square plate of the countersunk head fiber composite connecting piece of the horizontal countersunk head broken bridge long self-tapping screw connecting piece and the hollow round rod is 90 degrees, and the angle between the rectangular plate of the countersunk head fiber composite connecting piece of the combined countersunk head broken bridge long self-tapping screw connecting piece and the hollow round rod is divided into 90 degrees which penetrate through the horizontal long self-tapping screw and 45 degrees which penetrate through the oblique upward long self-tapping screw; the diameter of a nail head of the steel self-tapping nail is 10mm, the diameter of a nail rod is 6mm, and the full length of the steel self-tapping nail is provided with threads; arranging horizontal countersunk head bridge-breaking long self-tapping screw connecting pieces at the top and the bottom of the vertical keel of the light steel sash, and arranging combined countersunk head bridge-breaking long self-tapping screw connecting pieces in the middle; horizontal countersunk head broken bridge long self-tapping screw connecting pieces are arranged on the transverse keels of the light steel sash, and the distance does not exceed 800mm.
9. The short-leg shear wall assembly type light steel combination truss supporting steel wire mesh frame mortar-perlite-polyphenyl composite enclosure wall as claimed in claim 1, wherein the horizontal web wires and the diagonal web wires of the steel wire mesh frame are supporting steel wire meshes connecting the inner leaf steel mesh and the outer leaf steel mesh; the steel wire mesh frame consists of an inner leaf steel wire mesh, a steel wire mesh frame horizontal web wire with the spot welding distance of 200mm and the diameter of 2mm of an outer leaf steel wire mesh and a steel wire mesh frame inclined web wire inclined upwards by 45 degrees, wherein the web wire penetrates through the perlite plate and the polyphenyl insulation board with the dovetail groove bonded on the inner leaf mortar layer and then extends into the short-limb shear horizontal projection by 60mm; one end of a horizontal web wire of a steel wire net rack and one end of a diagonal web wire of the steel wire net rack in the composite filler wall are welded with the steel wire net of the outer leaf of the composite wall, penetrate through the perlite plates 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 rack is welded with the steel wire net of the inner leaf of the concrete mortar and anchored in the concrete mortar inner leaf of the composite wall.
10. The method for supporting the steel wire net frame mortar-perlite-polyphenyl composite enclosure wall by the short-limb shear wall assembled light steel combined truss is characterized by comprising the following steps of:
firstly, processing and welding vertical and horizontal C-shaped steel of a light steel sash in a factory, binding a short-limb shear wall reinforcement cage and a coupling beam reinforcement cage, installing a grouting sleeve, purchasing a polyphenyl thermal insulation board and a perlite board, and cutting and assembling the polyphenyl thermal insulation board and the perlite board into required sizes; preparing an inner steel wire mesh, an outer steel wire mesh, a steel wire mesh frame web wire, a window frame mortar strip steel bar mesh welded with a force transmission steel plate, and prefabricating a horizontal countersunk head bridge-cut-off long self-tapping screw connecting piece and a combined countersunk head bridge-cut-off long self-tapping screw connecting piece;
secondly, mounting 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 a U-shaped steel wire, and separating the thickness of an inner mortar layer on the surfaces of the light steel sash and a dovetail groove of a polyphenyl insulation board through cushion blocks such as engineering plastics and the like and positioning the polyphenyl insulation board, the perlite board and the outer steel wire mesh; binding the window frame mortar strip reinforcing mesh with the inner leaf steel wire mesh and the outer leaf steel wire mesh;
thirdly, sequentially penetrating horizontal web wires of the steel wire mesh frame and oblique web wires of the steel wire mesh frame through the perlite plates and the polyphenyl insulation boards, spot-welding two ends of the web wires of the steel wire mesh frame with the inner steel wire mesh and the outer steel wire mesh 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-cutoff self-tapping screw connecting piece and the combined bridge-cutoff self-tapping screw connecting piece are penetrated through the perlite plates and the polyphenyl heat-insulation plates in sequence in a long self-tapping mode, 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;
and fourthly, pouring the mortar surface layers of the inner steel wire mesh and the outer steel wire mesh and the mortar strip of the window frame with the groove, and maintaining. Connecting the window frame mortar strip with a window opening connecting beam through a self-tapping nail cluster block connecting point;
fifthly, pouring shear wall concrete by taking the steel wire mesh frame mortar-perlite-polyphenyl thermal insulation structure as a bottom die, and maintaining;
sixthly, processing a composite wall outer leaf steel wire mesh, a composite wall perlite plate, a composite wall polyphenyl thermal insulation plate and a concrete mortar inner leaf reinforcing mesh; welding one end of a horizontal and oblique belly wire of a steel wire mesh frame with an outer leaf steel wire mesh of the composite wall, and sequentially penetrating a perlite plate and a polyphenyl insulation board to be welded with an inner leaf steel wire mesh; welding a force transmission steel plate on the concrete mortar inner leaf steel bar net;
seventhly, pouring composite wall mortar outer leaves and composite wall concrete mortar inner leaves in a factory, plastering mortar strips after the composite wall mortar outer leaves are reserved, and reserving grooves on the outer sides of force transmission steel plates welded on the steel bar net by the composite wall concrete mortar inner leaves;
eighthly, maintaining and supporting the steel wire mesh frame mortar-perlite-polyphenyl thermal insulation composite filling wall, and transporting to a construction site;
the ninth step, overlapping the short-limb shear wall with the horizontal steel bars of the adjacent connecting beam, binding the vertical constructional steel bars and the tie steel bars, pouring a strip inner side supporting template between the short-limb shear wall and the adjacent connecting beam in the vertical concrete post-pouring way, and using the outer side polyphenyl thermal insulation board as the template;
tenth, paving a mortar cushion layer on the lower floor; and (3) butting the longitudinal stressed steel bars at the tops of the lower short-leg shear wall and the coupling beam with the grouting sleeves at the bottoms of the upper shear wall and the coupling beam, butting the rabbet of the polyphenyl thermal insulation boards of the upper wall board and the lower wall board and the mortar strip, pouring grouting materials into the sleeves through the reserved holes, binding additional steel wire meshes in the horizontal reserved strips, and leveling the horizontal mortar strip between the upper wall board and the lower wall board by adopting high-performance thermal insulation mortar. Pouring concrete in vertical post-pouring strips of adjacent walls and connecting beams, binding additional steel wire meshes in vertical reserved strips, and trowelling vertical mortar strips between the left wallboard and the right wallboard by adopting high-performance thermal insulation mortar;
step ten, connecting the composite filling wall with the upper connecting beam, the lower connecting beam, the left short-leg shear wall and the right short-leg shear wall through the inner-leaf reinforced concrete mortar surface layer self-tapping nail cluster connecting structure; binding a reinforcing steel bar mesh in a smearing strip after the outer leaves of the composite filler wall steel wire mesh mortar and the outer leaves of the short-limb shear wall steel wire mesh mortar, and trowelling by adopting high-performance heat-insulating mortar;
and a twelfth step of dismantling the template, painting the surface layers of the shear wall and the outer leaf mortar of the filler wall by using waterproof paint, and painting the inner surface of the short-leg shear wall and the inner leaf of the reinforcing mesh mortar of the composite filler wall by using inner wall paint.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117386056A (en) * | 2023-09-12 | 2024-01-12 | 中国建筑东北设计研究院有限公司 | Assembled full prefabricated floor and prefabricated shear wall connected node |
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| CN115928909B (en) | 2024-06-18 |
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