CN211007316U

CN211007316U - Enclosure structure of fabricated building and steel pipe column used by same

Info

Publication number: CN211007316U
Application number: CN201921329817.8U
Authority: CN
Inventors: 任自放; 刘界鹏; 查晓雄; 陈兴慧; 程晓波; 单文臣
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-15
Filing date: 2019-08-15
Publication date: 2020-07-14
Anticipated expiration: 2029-08-15

Abstract

The utility model relates to an enclosure structure of an assembly type building and a steel pipe column used by the enclosure structure, wherein the enclosure structure comprises a steel column and a wall body formed by prefabricated wallboards, the steel column is a hot-rolled seamless special-shaped steel pipe column, the steel column is arranged between adjacent prefabricated wallboards, and a wet seam is arranged between the steel column and the end faces of the prefabricated wallboards; each outer perimeter of the steel columns is buried in the wet joint and/or part of the outer perimeter is flush with the surface of the prefabricated wall panel. The assembled building envelope structure has the advantages of good integrity, high strength and no protrusion of the steel column from the surface of the wall body. The hot-rolled seamless special-shaped steel pipe column is integrally formed, has good integrity, and can extend in the length direction of the wall body on the premise of not protruding out of the surface of the wall body, thereby increasing the sectional area and ensuring the requirement of strength; after the steel column is effectively connected with the wallboard, the enclosure structure with high strength and good integrity is formed.

Description

Enclosure structure of fabricated building and steel pipe column used by same

Technical Field

The utility model belongs to the technical field of the technique of assembly type structure and specifically relates to a steel-pipe column that envelope of assembly type structure and used is related to.

Background

At present, the assembly type building is developed, the common quality problems of structure precision, leakage, cracking and the like can be improved, the performances of sound insulation, heat preservation, fire prevention and the like are improved, and the system is convenient to maintain and update. The prefabricated house has huge energy-saving and emission-reducing effects, improves the quality and efficiency of the house, greatly improves the construction efficiency, shortens the construction period, and fully embodies the characteristics of 'four sections and one environment protection' of a green building.

The steel column in the existing steel structure assembly type building mostly adopts H-shaped steel or square steel pipe columns, and the steel column needs to be large in section in order to meet the structural strength requirement, so that the problem that the steel column protrudes out of the surface of a wall body is caused, and the use space in a house is influenced; after the outer wall in the existing wall body is constructed, an outer heat-insulating layer and a protective layer need to be separately constructed on the outer side, so that the process is complex, and the integrity of the wall body is poor due to layered construction.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a first purpose provides an integrity is good, intensity is high, and the steel column can not bulge the assembly type building envelope on wall body surface. The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme: the wall body is formed by prefabricated wallboards, the steel column is a hot-rolled seamless special-shaped steel pipe column, the steel column is arranged between the adjacent prefabricated wallboards, and a wet joint is arranged between the steel column and the end faces of the prefabricated wallboards; each outer perimeter of the steel columns is buried in the wet joint and/or part of the outer perimeter is flush with the surface of the prefabricated wall panel.

By adopting the technical scheme, the hot-rolled seamless special-shaped steel pipe column is integrally formed, so that the hot-rolled seamless special-shaped steel pipe column has good integrity and better bending resistance and torsion resistance compared with an H-shaped steel column; compared with a square steel pipe column, the effect of not protruding out of the surface of the wall body can be realized on the premise of ensuring the strength; the wet joint can effectively connect the wallboard and the steel column into a whole, so that all the vertical components form a firmly connected enclosure whole.

The utility model discloses further set up as the steel column includes L shape steel pipe column, the cross-section of the cavity of L shape steel pipe column is L shapes, sets up in the corner of external wall body, sets up the wet seam of third between two vertical terminal surfaces of L shape steel pipe column and the terminal surface of external wall board, the medial surface of L shape steel pipe column and the internal surface parallel and level of external wall board.

The utility model discloses further set up to: the prefabricated wall panel also comprises an inner wall panel; the steel column comprises a T-shaped steel pipe column, the section of a hollow cavity of the T-shaped steel pipe column is T-shaped, the T-shaped steel pipe column comprises a straight part and a vertical part, and first wet joints are arranged between two end faces of the straight part and the end faces of the corresponding external wall panels; a second wet joint is arranged between the end face of the vertical part and the end face of the inner wallboard; the side surface of the straight part close to the vertical part is flush with the inner surface of the external wall panel.

By adopting the technical scheme, the L-shaped steel pipe column and the T-shaped steel pipe column can extend in the length direction of the wall body on the premise of not protruding out of the surface of the wall body, so that the sectional area is increased, the requirement on strength is met, and the outer enclosure structure with high strength and good integrity is formed after the steel columns are effectively connected with the outer wall panel.

The utility model discloses further set up to: the steel column comprises a cross-shaped steel pipe column, and the cross section of a hollow cavity of the cross-shaped steel pipe column is cross-shaped; the cross-shaped steel pipe column is arranged between the inner wall plates of the four blocks, and fourth wet joints are arranged between the four vertical end faces of the cross-shaped steel pipe column and the end faces of the inner wall plates; the outer side surface of the cross-shaped steel pipe column is flush with the surface of the inner wallboard.

By adopting the technical scheme, the cross-shaped steel pipe column can extend in the length direction of the wall body on the premise of not protruding out of the surface of the wall body, so that the sectional area is increased, and the requirement on strength is ensured; after the steel column is effectively connected with the external wall panel, an internal enclosure structure with high strength and good integrity is formed.

The utility model discloses further set up to: the outer surface of the special-shaped steel pipe column is provided with a plurality of pegs extending into the wet joint.

Through adopting above-mentioned technical scheme, further strengthened being connected of steel-pipe column and wet seam, made the building wholeness better.

The utility model discloses further set up to: the external wall panel comprises a bearing wall panel positioned outside the steel column and a prefabricated heat insulation layer embedded into a frame structure formed by the steel column and the steel beam; the inner surface of the prefabricated heat insulation layer is flush with the frame structure.

By adopting the technical scheme, the prefabricated external wall panel is integrally formed, and a shear wall structure is formed, so that the seismic performance of the building is further improved.

The utility model discloses further set up to: the bearing wall plate part of the external wall plate is provided with a through hole which vertically penetrates through, and a prestressed tendon which connects all the external wall plates into a whole in the vertical direction penetrates through the through hole.

By adopting the technical scheme, the external wall panel forms an integral structure, and the stress performance and the shock resistance are improved.

The utility model discloses further set up to: the bearing wall plate part of the external wall plate extends out of the vertical end face to form a slurry baffle plate, and the slurry baffle plates of two adjacent external wall plates are spliced.

By adopting the technical scheme, the operations of installing the template on the outer side of the outer wall, erecting a scaffold and the like are avoided, and the construction efficiency and the safety are improved. Meanwhile, the steel column is prevented from being exposed, the connecting area of the prefabricated external wall panel is reduced, the splicing quality is controlled, the bearing structures are connected into a whole while the components are protected, and the stress effect is more prominent.

The utility model has the second purpose of providing any hot-rolled seamless special-shaped steel pipe column, and the utility model discloses an above-mentioned utility model aims to realize through following technical scheme, including L shape steel pipe column, the cross-section of the cavity of L shape steel pipe column is L shape, sets up in the corner of external wall body, including T shape steel pipe column, the cross-section of the cavity of T shape steel pipe column is T shape, sets up in external wall body department;

by adopting the technical scheme, the special-shaped steel pipe column meets the shape requirements of each splicing part of a building as far as possible, and the single-specification column is prevented from excessively occupying the use space of a house after being installed.

To sum up, the utility model discloses a beneficial technological effect does:

1. the hot-rolled seamless special-shaped steel pipe column can extend in the length direction of the wall body on the premise of not protruding out of the surface of the wall body, so that the sectional area is increased, and the requirement on strength is met; after the steel column is effectively connected with the wallboard, an outer enclosure structure with high strength and good integrity is formed;

2. the prefabricated external wall panels are integrally formed and are connected into a whole through the prestressed tendons to form a shear wall structure, so that the seismic performance of the building is further improved; the wall body is matched in multiple layers, so that the decoration process is saved, and the phenomena of cracking, falling off and bulging of the later-stage decoration layer can be reduced;

3. the outer wall board has the advantages that the operation of installing a template on the outer side of the outer wall, erecting a scaffold and the like is avoided, and the construction efficiency and the safety are improved.

Drawings

FIG. 1 is a schematic view of the overall structure of a prefabricated building;

FIG. 2 is a schematic diagram of a L-shaped steel pipe string in a fabricated configuration;

FIG. 3 is a schematic structural view of a fabricated structural T-shaped steel pipe string;

FIG. 4 is a schematic structural diagram of a cross-shaped steel pipe column in an assembled structure;

FIG. 5 is a schematic structural view of the T-shaped post being connected to the inner and outer wall panels by a wet seam;

FIG. 6 is a schematic view of a layered structure and embedded connection steel bars of a prefabricated external wall panel;

FIG. 7 is a schematic view of the connection structure of the beam with the prefabricated external wall panel and the floor slab;

fig. 8 is a schematic view of the connection structure of the L-shaped steel tubular beam and the prefabricated external wall panel;

FIG. 9 is a schematic view of the connection structure of the cross-shaped columns and the prefabricated interior wall panels;

FIG. 10 is a schematic view of the connection of the beams to the prefabricated interior wall panels and the floor slab;

FIG. 11 is an exploded view of the connection between prefabricated interior wall panels;

FIG. 12 is a schematic structural view of a hollow precast floor slab;

fig. 13-15 are schematic views of the connection of the deformed columns and the steel beam nodes;

FIG. 16 is a BIM platform based assembly building construction process flow diagram;

FIG. 17 is a schematic view of an extrusion molding line for a deformed steel pipe;

FIG. 18 is a schematic structural view of a preceding extrusion molding machine for a cross-shaped steel pipe column;

FIG. 19 is a schematic structural diagram of a middle-stage extrusion molding machine for a cross-shaped steel pipe column;

FIG. 20 is a schematic structural diagram of a cross-shaped steel pipe column final extrusion molding machine;

FIG. 21 is a schematic structural view of an L-type steel pipe column extrusion molding machine;

FIG. 22 is a schematic structural view of a T-shaped steel pipe column extrusion molding machine;

fig. 23 is a schematic structural view of an H-shaped steel pipe beam extrusion molding machine.

In the figure, 1, steel columns, 11, L steel columns, 12, T-shaped steel columns, 121, I-shaped parts, 122, vertical parts, 13, cross-shaped steel columns, 14, pegs, 2, steel beams, 21, splicing grooves, 22, long pegs, 31, prefabricated external wall panels, 311, load-bearing wall panels, 312, prefabricated heat insulation layers, 313, slurry baffles, 314, through holes, 315, an internal decoration layer, 316, transverse seams, 317, reinforced steel wire meshes, 32, prefabricated internal wall panels, 321, trapezoidal bumps, 322, splicing parts, 323, second splicing parts, 324, trapezoidal grooves, 4, prefabricated floor panels, 41, prestressed high-strength scored steel wires, 5, wet seams, 51, first wet seams, 52, second wet seams, 53, third wet seams, 54, fourth wet seams, 55, fifth wet seams, 6, connecting reinforcing steel bars, 61, first U-shaped ribs, 62, second U-shaped ribs, 63, third U-shaped ribs, 64, vertical connecting ribs, 65, 66, vertical connecting ribs, roll shafts, 83, roll shafts, roll forming rollers, 9, roll forming machines, transverse ribs, transverse rollers, 9, extrusion forming machines, and forming rollers.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The first embodiment is as follows:

as shown in fig. 1, for the utility model discloses an assembly type building, including the main body frame structure that is formed by steel column 1, girder steel 2, by the wall body that whole prefabricated wallboard formed, and by the superstructure that whole prefabricated floor 4 formed, whole prefabricated wallboard includes prefabricated exterior wallboard 31 and prefabricated interior wallboard 32, steel column 1, girder steel 2 are hot rolling seamless special-shaped steel pipe (do the concrete introduction to the processing technology in the fourth embodiment), adopt gusset plate 7 and bolt 71 to connect each other; the steel column 1 is arranged between the adjacent prefabricated wallboards, and the wet joint 5 is arranged between the steel column 1 and the end faces of the prefabricated wallboards; the outer circumferential surfaces of the steel columns 1 are completely buried in the wet joints 5, or part of the outer circumferential surfaces are flush with the surface of the prefabricated wall panel (namely the steel columns 1 do not protrude out of the wall surface); the precast floor slab 4 is an integral precast hollow slab.

As shown in fig. 2 to 4, the steel column 1 includes L-shaped steel pipe columns 11, T-shaped steel pipe columns 12 and cross-shaped steel pipe columns 13, and may be hot-rolled seamless steel profile pipes having a square, rectangular or other cross-sectional shape in addition to the conventional L-shaped, T-shaped or cross-shaped steel pipes shown in the drawings.

As shown in fig. 3 and 5, the cross section of the hollow cavity of the T-shaped steel pipe column 12 is T-shaped, the T-shaped steel pipe column 12 includes a straight portion 121 and a vertical portion 122, and a first wet joint 51 is disposed between two end surfaces of the straight portion 121 and an end surface of the corresponding prefabricated external wall panel 31; a second wet joint 52 is provided between the end face of the vertical portion 122 and the end face of the prefabricated interior wall panel 32; the side of the straight portion 121 adjacent to the vertical portion 122 is flush with the inner surface of the prefabricated external wall panel 31.

The prefabricated external wall panel 31 comprises a bearing wall panel 311 positioned on the outer side of the steel column 1 and a prefabricated heat insulation layer 312 embedded in a frame structure formed by the steel column 1 and the steel beam 2. The load-bearing wall panels 311 may be made of high grade concrete, such as C40 concrete; the prefabricated insulating layer 312 may be made of lightweight concrete or ceramsite concrete or other solidifying materials.

Further, the bearing wall panel 311 can be made of colored high-strength concrete, so as to have a decorative effect on the outer surface, and the inner and outer surfaces of the bearing wall panel can be provided with an integrally cast decorative layer, so that the prefabricated external wall panel 31 can be prefabricated into a sandwich structure. As shown in the drawing, in the case where the inner decoration layer 315 is provided, the inner surface of the inner decoration layer 315 is flush with the frame structure. Preferably, the thickness of the load-bearing wall panel 311, the prefabricated insulation layer 312 and the inner decorative layer 315 is 90mm, 130mm and 20mm, respectively.

When the inner decorative layer 315 is not provided, the inner surface of the pre-formed insulation layer 312 is flush with the frame structure. Prefabricated heat preservation 312 or interior decorative layer 315 are flush with frame construction, and the internal surface of prefabricated side fascia 31 is flush with the periphery side that steel column 1 does not contact with wet seam 5 to the difficult problem that steel column 1 exposes the wall in the prior art, influences the use of the room in the house has been solved.

To strengthen the connection of the steel columns 1 to the wet joint 5, the outer surface of the T-shaped steel pipe column 12 is provided with a plurality of pegs 14 that extend into the wet joint 5.

During construction, after the steel column 1 and the prefabricated external wall panel 31 are installed, vertical side molds are installed on the outer surface and the inner surface of the prefabricated external wall panel 31, and then concrete in the first wet joint 51 is poured; simultaneously, vertical side forms are installed on the surface of the prefabricated interior wall panels and then the concrete in the second wet joint 52 is poured.

In order to prevent the outer surface of the T-shaped steel pipe 12 from being exposed, the thickness of the letter 121 of the T-shaped steel pipe 12 is smaller than that of the prefabricated exterior wall panel 31 such that the outer side of the letter 121 is buried in the concrete of the first wet joint 51.

Further, when the vertical side forms on the outer surface of the prefabricated external wall panel 31 are installed, operation platforms such as scaffolds need to be erected on the periphery of the building, so that the installation cost is high and the installation is unsafe. Therefore, as shown in fig. 5 and 6, the vertical end face of the load-bearing wall panel 311 of the prefabricated external wall panel 31 partially extends to form a slurry baffle 313, and the slurry baffles 313 of two adjacent prefabricated external wall panels 31 are spliced together to replace the outer formwork of the first wet joint 51. In order to ensure the thickness of concrete between the outer side surface of the straight part 121 of the T-shaped steel pipe column 12 and the baffle 313, the thickness of the baffle 313 is less than that of the bearing wall plate 311, and can be 20-30 mm. Further, a reinforced steel wire mesh sheet 317 is arranged in the pulp baffle 313, and the reinforced steel wire mesh sheet 317 extends into the bearing wall plate 311, or is arranged in the bearing wall plate 311 and the pulp baffle 313 in a full-length mode so as to increase the strength of the pulp baffle 313.

In order to strengthen the connection between two adjacent prefabricated external wall panels 31 and the connection between the prefabricated external wall panels 31 and the first wet joint 51, the bearing wall panel 311 is pre-embedded with connecting steel bars 6 extending out of the end faces on the vertical end faces; the connecting steel bars 6 of two adjacent prefabricated external wall panels 31 are connected with each other. Preferably, as shown in the figure, the connecting steel bars 6 are U-shaped steel bars, both ends of the U-shaped steel bars are embedded in the prefabricated external wall panel 31, and the bent portions extend into the first wet joints 51. The U-shaped reinforcement may be divided into a first U-shaped reinforcement 61 and a second U-shaped reinforcement 62. As shown in fig. 5, the first U-shaped ribs 61 extend between the outer side surface of the straight portion 121 of the T-shaped steel pipe column 12 and the grout baffle 313, the first U-shaped ribs 61 on the two prefabricated external wall panels 31 are arranged in a staggered manner in the vertical direction and form a cross, so that the two prefabricated external wall panels 31 are overlapped in the vertical projection, and the vertical connecting ribs 64 are inserted into the bends, so that the two prefabricated external wall panels 31 are connected more effectively. The part of the second U-shaped rib 62 extending out of the end face of the prefabricated external wall panel 31 is located between the end face of the straight part 121 of the T-shaped steel pipe column 12 and the end face of the prefabricated external wall panel 31.

In order to enhance the integrity of the outer wall, as shown in fig. 5 and 6, two through holes 314 are vertically penetrated through the bearing wall plate 311 of each prefabricated outer wall panel 31, a prestressed tendon connecting all the prefabricated outer wall panels 31 in the vertical direction is penetrated through the through holes 314, and concrete or grouting material is poured between the prestressed tendon and the inner wall of the through hole 314. The positions of the prefabricated external wall panels 31 at the top and the bottom for mounting the anchorage devices are locally reinforced by measures such as additionally arranging steel bars or improving concrete marks, and holes for mounting the anchorage devices can be formed in the side surfaces of the strip-shaped foundation, so that the external wall and the foundation are connected into a whole.

As shown in fig. 7, the prefabricated external wall panel 31 has a height corresponding to the height of the floor, and the transverse joint 316 is disposed at the center of the prefabricated floor slab 4 of the floor, or at the center of the beam height.

As shown in fig. 2 and 8, the section of the hollow cavity of the L-shaped steel pipe column 11 is L-shaped and is disposed at the corner of the external wall, a third wet joint 53 is disposed between two vertical end faces of the L-shaped steel pipe column 11 and the end face of the prefabricated external wall panel 31, the inner side face of the L-shaped steel pipe column 11 is flush with the inner surface of the prefabricated external wall panel 31, and further, a plurality of pegs 14 extending into the wet joints 5 are disposed on the outer surface of the L-shaped steel pipe column 11.

As shown in fig. 3 and 9, the cross section of the hollow cavity of the cross-shaped steel pipe column 13 is cross-shaped; the cross-shaped steel pipe column 13 is arranged among the four prefabricated inner wall plates 32, and fourth wet joints 54 are arranged between the four vertical end faces of the cross-shaped steel pipe column 13 and the end faces of the prefabricated inner wall plates 32; the thickness of the prefabricated interior wall panel 32 can be the same as the thickness of the cross-shaped steel pipe column 13, so that the outer side surface of the cross-shaped steel pipe column 13 is flush with the surface of the prefabricated interior wall panel 32. Certainly, the thickness of the prefabricated inner wall plate 32 can also be larger than that of the cross-shaped steel pipe column 13, and after the installation is completed, the cross-shaped steel pipe column 13 and the inward concave part of the wall surface are sealed by using decorative strips.

Further, water supply, drainage, pollution discharge, ventilation pipelines and the like are installed in the hollow cavity of the cross-shaped steel pipe column 13, or a common pipe well is installed in the hollow receptor.

Referring to fig. 10, the steel beam 2 is an H-shaped steel pipe beam with an H-shaped inner cavity, the upper surface and the lower surface of the H-shaped steel pipe beam are recessed to form an insertion groove 21, and the cross section of the insertion groove 21 may be rectangular or trapezoidal. The upper surface of the prefabricated inner wall plate 32 is provided with a plug-in part 322 with a matched shape, and the plug-in part 322 on the upper surface of the prefabricated inner wall plate 32 is inserted into the plug-in groove 21 on the lower surface of the H-shaped steel pipe beam. The thickness of prefabricated interior wall panels 32 is shown to be less than the thickness of steel beams 2.

Prefabricated interior wall panel 32 may be a hollow high strength lightweight concrete panel. As shown in fig. 9 and 11, the side end faces of the prefabricated inner wall panels are provided with male and female tongue-and-groove, and two adjacent prefabricated inner wall panels are installed by matching the male and female tongue-and-groove. The male and female slots may be generally trapezoidal projections 321 and slots 324. As shown in fig. 9, the trapezoidal protrusions 321 and the trapezoidal grooves 324 of the prefabricated interior wall panel 32 can be better engaged with the fourth wet joint 54, so as to integrally connect the cross-shaped steel pipe column 13 with the prefabricated interior wall panel 32.

As shown in fig. 12, the precast floor slab 4 is a monolithic precast hollow slab. The upper surface of the prefabricated floor slab 4 is provided with an integrally formed decorative layer, such as ceramic tiles and the like; the bottom surface is directly and reversely punched with an integrally formed ceiling pattern layer. The prefabricated floor slab 4 is internally provided with double layers of bidirectional prestressed steel bars or prestressed high-strength indented steel wires 41, so that the span application range of the prefabricated floor slab 4 is enlarged. Preferably, the prestressing force may be applied by a short line method. By adopting the scheme, the whole floor for one room can be realized, secondary decoration is not needed, the construction process is reduced, and the problem of the slab joint of the traditional precast slab is solved. Furthermore, the connecting end face of the prefabricated floor slab 4 is embedded with a connecting rib 66 extending out of the connecting end face.

Referring back to fig. 10, precast floor slab 4 is lapped on the upper surface of the H-shaped steel tubular beam, the lower surface of upper precast inner wall panel 32 is higher than the top surface of precast floor slab 4, and fifth wet joints 55 are provided between precast floor slab 4 and upper precast inner wall panel 32 and the H-shaped steel tubular beam. The connecting ribs 66 of two adjacent prefabricated floor slabs 4 are connected with each other, the connecting ribs 66 can be third U-shaped ribs 63, two ends of the third U-shaped ribs 63 are embedded in the prefabricated floor slabs 4, the elbow parts extend into the fifth wet joint 55, the third U-shaped ribs 63 of the two prefabricated floor slabs 4 are crossed with each other, and transverse connecting ribs 65 are inserted in the elbows. The connecting rib 66 may also be a steel bar with an elbow, and a steel cage is disposed inside the fifth wet joint 55, or a node thereof may be used for reinforcement.

Referring to fig. 10 and 11, the lower surface of prefabricated interior wall panel 32 is provided with a protruding second spigot 323, and second spigot 323 is inserted into fifth wet joint 55, thereby preventing the bottom surface of prefabricated interior wall panel 32 from forming a horizontal through seam. During construction, after the floor slab is installed, the upper prefabricated inner wall slab 32 is installed in place, the bottom of the upper prefabricated inner wall slab is temporarily supported, then the corner side die is installed, and finally concrete is poured from the reserved hole in the side die, and preferably self-compacting concrete is selected.

In addition, the top surface of the fifth wet joint 55 may be even with the top surface of the prefabricated floor slab 4, and the bottom surface of the prefabricated interior wall panel 32 is even, and may be directly installed on the top surface of the fifth wet joint 55 (this embodiment corresponds to the construction method in the third embodiment, and is not shown in the figure).

Referring back to fig. 7, the connection between the prefabricated external wall panel 31 and the steel beam 2 and the prefabricated floor slab 4 is also provided with a fifth wet joint 55, a pre-embedded connecting rib 66 is arranged at a position, close to the fifth wet joint 55, of the bearing wall panel 311 of the prefabricated external wall panel 31, and the connecting rib 66 of the prefabricated external wall panel 31 is connected with the connecting steel bar 6 on the prefabricated floor slab 4. Further, the connecting bars 66 of the prefabricated external wall panel 31 and the connecting bars 6 on the prefabricated floor slab 4 are connected to form U-shaped bars in the horizontal direction, the top surface of the H-shaped steel tube beam is provided with the long studs 22, and the prefabricated external wall panel 31 and the prefabricated floor slab 4 are connected after the long studs 22 vertically penetrate through the U-shaped bars.

As shown in fig. 13 to 15, all the steel beams 2 are connected to the steel columns 1 by the gusset plates 7 and the bolts 71, so that the steel structure can be quickly installed. The steel beam 2 is arranged on the side surface of the steel column 1, and the upper steel column 1 and the lower steel column 1 are directly connected in a butt joint mode and then connected through the gusset plate 7.

Furthermore, the assembly type building also comprises factory prefabricated integral stairs, balconies, elevator shafts, prefabricated integral kitchen and bathroom units and integrally assembled doors and windows.

Example two:

a method for constructing a building of the type shown in fig. 16, comprising the steps of:

the first step is as follows: adopting a BIM platform to carry out three-dimensional design of building structures on all parts, inputting relevant parameters to carry out construction simulation, carrying out organization and procedure simulation on a construction site, carrying out construction installation training, carrying out construction simulation collision and construction simulation of complex nodes, and guiding the processing of the parts;

the second step is that: assembling a special hot-rolled special-shaped seamless steel pipe column and a steel pipe beam layer by layer to form a steel structure frame system of a first floor of the prefabricated house; the steel pipe columns and the steel pipe beams are connected by node plates 7 and bolts 71;

the third step: respectively installing a first layer of common pipe well for water supply, drainage, pollution discharge and ventilation by utilizing the cavities of the special hot-rolled special-shaped seamless steel pipe columns and the steel pipe beams, and installing prefabricated components and accessories such as an integral prefabricated staircase, an elevator shaft, an integral prefabricated kitchen, an integral prefabricated toilet and the like;

the fourth step: installing a first layer of bidirectional double-layer prestressed concrete integral hollow precast floor slab 4 to form a floor system;

the fifth step: installing a first sandwich-type prefabricated external wall panel 31 with internal and external decorations and a heat-insulating layer and an integral prefabricated balcony;

and a sixth step: installing a first layer of hollow high-strength lightweight concrete prefabricated inner wallboard 32 with a fourth-side band concave-convex mortise and tenon structure; installing the steel pipe columns, the prefabricated external wall panels 31 and the prefabricated internal wall panels 32 on the second layer, and temporarily supporting the bottoms of the prefabricated external wall panels 31 and the prefabricated internal wall panels 32 so as to leave a pouring space of a fifth wet joint 55;

the seventh step: pouring the wet joint 5 concrete of all the connection nodes of the first layer to form an integral structure; installing a second layer of steel pipe beams;

eighth step: installing a first layer of integral prefabricated doors, windows and other structural parts;

the ninth step: repeating the construction procedures from the third step to the eighth step layer by layer until the structure is completely installed;

the tenth step: perfects the installation of the water and electric heating ventilation device, the personalized decoration inside and outside, the completion acceptance and the delivery.

In the construction and delivery processes from the second step to the tenth step, the BIM platform is used for guiding the factory prefabrication and field installation of part components, and the transmission and sharing of logistics purchasing information and the all-round monitoring and monitoring of construction progress, quality and safety are realized.

Example three:

the difference from the second embodiment is that: when the top surface of the fifth wet joint 55 is flat with the top surface of the prefabricated floor slab 4 and the bottom surface of the prefabricated interior wall panel 32 is flat, directly mounted on the top surface of the fifth wet joint 55, the sixth to eighth steps become:

and a sixth step: installing a first layer of hollow high-strength lightweight concrete prefabricated inner wallboard 32 with a third-side band concave-convex mortise and tenon structure;

the seventh step: pouring the wet joint 5 concrete of all the connection nodes of the first layer to form an integral structure;

the ninth step: and repeating the second step to the eighth step of the construction procedure layer by layer until the structure is completely installed.

The fabricated building structure mainly adopts a mixed structure of a steel structure frame and a shear wall, mainly adopts factory prefabrication as a component, mainly adopts a steel structure as a stress structure, and mainly adopts bolt riveting for field installation; the structural materials of the beam and the column adopt a hot-rolled deformed steel pipe frame (shear) structure; the prefabricated external wall panel 31 adopts a method of 'external wall external hanging and internal wall embedded', the external wall is of a sandwich structure with internal and external decoration and heat preservation, the internal wall is of hollow high-strength lightweight concrete, all beam and column connections are connected by high-strength bolts 71, and the floor is of an integral bidirectional double-layer prestressed concrete hollow panel structure, so that a building structure with good overall assembly, simple process flow, firm structure and good earthquake resistance is realized;

example four:

steel beams and steel columns in traditional steel structure buildings are mainly formed by cold bending or cutting and welding steel plates and are basically square and rectangular in cross section, or solid-web section steel is directly adopted for secondary processing. The cold-formed steel is limited by a processing technology, has thin wall thickness, poor quality of high-frequency welding seams and large round corners, and is difficult to be used as an important beam-column structure; the welding forming has the disadvantages of large welding amount, labor and time waste, poor appearance, large deformation and difficult elimination of welding residual stress.

In addition, the traditional steel structure rod is limited by various conditions, mostly has square and rectangular sections, the section size is larger than the thickness of the inner wall and the outer wall, the part of the steel structure rod protruding out of the wall body is difficult to process, secondary decoration is difficult, cracks and leakage phenomena are easy to generate, and potential quality hazards are easy to form.

The steel column 1 and the steel beam 2 in the embodiments 1 to 3 are hot-rolled seamless special-shaped steel tubes, and the hot-rolled seamless special-shaped steel tubes are special-shaped steel tubes processed and formed by a new production process.

As shown in FIG. 17, the hot-rolled seamless special-shaped steel tube processing technology is modified on the traditional hot-rolled seamless steel tube equipment and technology, and adopts a plurality of special extrusion forming machines 8 to extrude the hot-rolled seamless special-shaped steel tube series which is suitable for the beam and column structure standard of the fabricated building structure, wherein the standard section specifications comprise but are not limited to rectangle, L type, T type, cross type, cavity H type and the like.

At high temperature above 900 ℃, enabling the seamless circular tube 9 to pass through an extrusion processing line consisting of a plurality of groups of extrusion forming machines 8, wherein the plurality of groups of extrusion forming machines 8 are arranged in the middle of on-line equipment on a hot-rolled seamless steel tube production line, and can be specifically arranged behind a sizing frame or a reducing frame on the hot-rolled seamless steel tube production line and synchronously work on line with other equipment; the seamless round tube 9 is gradually rolled and formed for a plurality of times by a plurality of groups of extrusion forming machines 8.

Preferably, the rolling of the seamless round tube 9 is performed simultaneously with the heating, sizing, reducing, reheating, straightening, cutting, etc. of the blank tube of the hot-rolled seamless steel tube, so as to maintain the same quality as that of the hot-rolled seamless steel tube.

Referring to fig. 18 to 20, taking the processing of the cross-shaped steel pipe column 13 as an example for description, each group of extrusion molding machines 8 includes a frame and four face rollers 81 and four corner rollers 82 rotatably mounted on the frame, and the four face rollers 81 and the corner rollers 82 are arranged at intervals according to the shape of the cross-shaped steel pipe column 13; the shapes of the surface rollers 81 and the corner rollers 82 on different extrusion molding machines 8 are gradually close to the external dimension of the cross-shaped steel pipe column 13 according to the passing direction of the seamless circular pipe 9, and all the surface rollers 81 and the corner rollers 82 on the same group of extrusion molding machines 8 are enclosed to form the external contour line of the cross-shaped steel pipe column 13; when the seamless circular pipe 9 passes through, the surface roller 81 and the angle roller 82 rotate around the roller shaft 83, the surface roller 81 extrudes the cambered surface of the seamless circular pipe 9 into a plane, and the angle roller 82 extrudes the cambered surface of the circular pipe into an inwards concave right-angle surface.

More specifically, the angle rollers 82 on the first groups of extrusion molding machines 8 extrude the cambered surface of the seamless circular tube 9 into a plane, and the angle rollers 82 on the last groups of extrusion molding machines 8 extrude the plane into an inwards concave right-angle surface; namely, the angle rollers 82 and the surface rollers 81 on the former groups of extrusion forming machines 8 jointly extrude the seamless circular tube 9 into a polygon, and the angle rollers 82 on the latter groups of extrusion forming machines 8 extrude the corresponding plane of the seamless circular tube 9 into an inwards concave right-angle surface.

As shown in fig. 21, the extrusion press 8 of the L-shaped steel pipe column 11 includes one corner roller 82 and four face rollers 81.

As shown in fig. 22, the extrusion press 8 of the T-shaped steel pipe column 12 includes two corner rollers 82 and four face rollers 81.

As shown in fig. 23, the extrusion molding machine 8 for H-shaped steel pipes (i.e., H-shaped steel pipe beams) includes two surface rollers 81 and two molding rollers 84, and the outer peripheral surfaces of the molding rollers 84 gradually change from flat surfaces to outwardly-protruding polygonal surfaces, thereby extruding the seamless circular pipe 9 into the H-shaped steel beam 2 having two inwardly-recessed outer surfaces.

Compared with the performance of the same material, the hot-rolled seamless special-shaped steel tube can roll special-shaped sections of various specifications and varieties and different materials through the special extrusion molding machine 8, and has high mechanical production efficiency and good quality; the composite material can be widely applied to main stressed components such as beams, columns and the like of fabricated steel structure buildings.

In addition, the processing technology of the hot-rolled seamless special-shaped steel pipe can also be suitable for processing steel pipe components in the fields of automobiles, ship manufacturing, equipment platforms and the like; the special-shaped pipe fitting can also be formed by heating and extruding materials with different materials and specifications.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a building envelope of prefabricated building, includes steel column (1) and the wall body that is formed by prefabricated wallboard, its characterized in that: the steel column (1) is a hot-rolled seamless special-shaped steel pipe column, the steel column (1) is arranged between adjacent prefabricated wallboards, and a wet joint (5) is arranged between the steel column (1) and the end faces of the prefabricated wallboards; the outer circumferential surfaces of the steel columns (1) are buried in the wet joints (5) and/or part of the outer circumferential surfaces are flush with the surface of the prefabricated wall panel.

2. A building envelope of an assembly type structure as claimed in claim 1, wherein the steel column (1) comprises L-shaped steel column (11), the hollow cavity of the L-shaped steel column (11) has L-shaped section and is arranged at the corner of the external wall, a third wet joint (53) is arranged between the two vertical end faces of the L-shaped steel column (11) and the end face of the external wall panel, and the inner side face of the L-shaped steel column (11) is flush with the inner surface of the external wall panel.

3. A building envelope of a fabricated building according to claim 2, wherein: the prefabricated wall panel also comprises an inner wall panel; the steel column (1) comprises a T-shaped steel column (12), the section of a hollow cavity of the T-shaped steel column (12) is T-shaped, the T-shaped steel column (12) comprises a straight part (121) and a vertical part (122), and first wet joints (51) are arranged between two end faces of the straight part (121) and the end faces of the corresponding external wall panels; a second wet joint (52) is arranged between the end face of the vertical part (122) and the end face of the inner wall plate; the side surface of the straight part (121) close to the vertical part (122) is flush with the inner surface of the external wall panel.

4. A building envelope of a fabricated building according to claim 3, wherein: the steel column (1) comprises a cross-shaped steel pipe column (13), and the cross section of a hollow cavity of the cross-shaped steel pipe column (13) is cross-shaped; the cross-shaped steel pipe column (13) is arranged between the four inner wall plates, and fourth wet joints (54) are arranged between the four vertical end faces of the cross-shaped steel pipe column (13) and the end faces of the inner wall plates; the outer side surface of the cross-shaped steel pipe column (13) is flush with the surface of the inner wallboard.

5. A building envelope of a fabricated building according to claim 4, wherein: the outer surface of the special-shaped steel pipe column is provided with a plurality of pegs (14) extending into the wet joint (5).

6. A building envelope of a fabricated building according to any one of claims 2 to 5, wherein: the external wall panel comprises a bearing wall panel (311) positioned on the outer side of the steel column (1) and a prefabricated heat insulation layer (312) embedded into a frame structure formed by the steel column (1) and the steel beam (2); the inner surface of the prefabricated insulating layer (312) is flush with the frame structure.

7. A building envelope of a fabricated building according to claim 6, wherein: the bearing wall plate (311) part of the external wall plate is provided with a through hole (314) which vertically penetrates through, and a prestressed tendon which connects all the external wall plates into a whole in the vertical direction penetrates through the through hole (314).

8. A building envelope of a fabricated building according to claim 6, wherein: the bearing wall plate (311) of the external wall plate partially extends out of the vertical end face to form a slurry baffle plate (313), and the slurry baffle plates (313) of two adjacent external wall plates are spliced.