CN109339242B - Assembled cold-formed thin-wall section steel combined house structure system and construction method - Google Patents

Assembled cold-formed thin-wall section steel combined house structure system and construction method Download PDF

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Publication number
CN109339242B
CN109339242B CN201811339798.7A CN201811339798A CN109339242B CN 109339242 B CN109339242 B CN 109339242B CN 201811339798 A CN201811339798 A CN 201811339798A CN 109339242 B CN109339242 B CN 109339242B
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wall section
thin
cold
steel
assemblies
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CN109339242A (en
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乔文涛
王玉环
尹晓祥
张海影
程乐文
赵洁
康佳玲
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Hebei bimu Construction Technology Co.,Ltd.
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Shijiazhuang Tiedao University
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/343Structures characterised by movable, separable, or collapsible parts, e.g. for transport
    • E04B1/34315Structures characterised by movable, separable, or collapsible parts, e.g. for transport characterised by separable parts
    • E04B1/34321Structures characterised by movable, separable, or collapsible parts, e.g. for transport characterised by separable parts mainly constituted by panels
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/14Conveying or assembling building elements

Abstract

The invention provides an assembled cold-formed thin-wall section steel combined house structure system and a construction method, belonging to the technical field of civil construction, and comprising a cold-formed thin-wall section steel combined column, a cold-formed thin-wall section steel combined beam and a cold-formed thin-wall section steel combined plate, wherein each combined column, combined beam and combined plate are formed by connecting a plurality of U-shaped thin-wall section steels after overlapping flanges and flanges or overlapping flanges and webs, and are provided with connecting surfaces connected with other components, and foam heat-insulating materials are filled in a formed cavity; the cold-formed thin-wall section steel combination beam is connected with the adjacent cold-formed thin-wall section steel combination column through bolts, and the cold-formed thin-wall section steel combination plate is connected onto the adjacent cold-formed thin-wall section steel combination beam in a lap joint mode through pins. The assembled cold-formed thin-wall section steel combined house structure system provided by the invention can solve the problems that the thin-wall section steel applied to the house in the prior art has lower floor number, poorer structural stability, lower bearing capacity and the like.

Description

Assembled cold-formed thin-wall section steel combined house structure system and construction method
Technical Field
The invention belongs to the technical field of civil construction, and particularly relates to an assembled cold-formed thin-wall section steel combined house structure system and a construction method.
Background
Common building structures in engineering are brick-concrete structures, brick-wood structures, reinforced concrete structures and steel structures. The brick-concrete structure adopts brick walls, reinforced concrete beams and plates as main bearing components, and is suitable for multi-storey buildings with small bay depths and small room areas. The main structure of the bearing of the brick-wood structure is built by bricks and wood, the service life of the brick-wood structure is short, and the area of a house is small. The most main materials of the reinforced concrete are steel bars and concrete, the structure has the widest application range and is also the most widely applied building form, the concrete has long solidification time and is greatly influenced by weather factors such as temperature, humidity and the like, and in addition, the concrete member has great self weight and low construction efficiency. The main stressed member in the steel structure house is steel which is heat-resistant, non-fire-resistant and easy to rust, and is generally used in large-span buildings or super high-rise buildings. With the rapid development of steel industry in China, steel structures are used in residential buildings successively. The thin-wall steel structure is one form of steel structure, the steel used in the thin-wall steel structure is formed by cold drawing, the strength is high, the thickness is thin, the sections are various, the thin-wall steel structure is widely applied to residential buildings in many countries, the residential space is large, the use is flexible, the cost is low, and the construction is rapid. In recent years, the structure is widely applied in China, but the structure is only suitable for a multi-layer building structure due to the thin section and poor stability.
Disclosure of Invention
The invention aims to provide an assembled cold-formed thin-wall section steel combined house structure system, which aims to solve the technical problems that the thin-wall section steel in the prior art is only suitable for 3-8-storey multi-storey house buildings, has poor structural stability, low bearing capacity and the like.
In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides an assembled thin-walled cold-formed steel combination house structural system, includes:
the cold-formed thin-wall section steel combined column is formed by connecting a plurality of U-shaped thin-wall section steels after flanges and flanges are overlapped or flanges and webs are overlapped, is provided with connecting surfaces connected with other parts, and a cavity formed by the connecting surfaces is filled with foam heat-insulating materials;
the cold-formed thin-wall section steel composite beam is formed by connecting a plurality of U-shaped thin-wall section steels after the flanges are overlapped or the flanges and the web plates are overlapped and is provided with a connecting surface connected with other parts; and
the cold-formed thin-wall section steel composite plate is characterized in that a plurality of U-shaped thin-wall section steels are juxtaposed at intervals through webs, distributed reinforcing steel bars are arranged at the upper and lower wing edges of the U-shaped thin-wall section steels and fixed by tie bars, foam heat-insulating materials are filled between two adjacent U-shaped thin-wall section steels which are oppositely arranged, and then concrete is integrally poured;
the cold-formed thin-wall section steel combination beam is connected with the adjacent cold-formed thin-wall section steel combination column through bolts, and the cold-formed thin-wall section steel combination plate is lapped on the adjacent cold-formed thin-wall section steel combination beam through pins.
Further, the cold-formed thin-walled steel combined column comprises a corner column with two vertical connecting surfaces, a II-type side column with two opposite connecting surfaces, an I-type side column with three connecting surfaces and a middle column with four connecting surfaces, wherein the corner column is applied to the corner of a house.
Further, the corner post comprises two first assemblies and two second assemblies;
the two first assembling parts comprise two U-shaped thin-wall section steels with the same specification, the openings of the two U-shaped thin-wall section steels with the same specification are in the same direction, and flanges are overlapped back to back;
the two second assemblies comprise two U-shaped thin-wall section steels with different specifications, the openings of the two U-shaped thin-wall section steels with different specifications are in the same direction, the flanges and the flanges are closely attached and overlapped back to back, and the two U-shaped thin-wall section steels with different specifications are fixedly connected by virtue of a plurality of screws which uniformly penetrate through the overlapped flanges along the length direction of the flanges, wherein web plates of the two U-shaped thin-wall section steels with different specifications are the same in height and thickness;
the two second assembly parts are arranged back to back, a gap is arranged between the two second assembly parts, flanges at the same end of the two second assembly parts are respectively connected with the inner sides of two corresponding webs of one first assembly part, and the opening of the other first assembly part faces the second assembly part;
two U-shaped thin-wall section steels with the same specification are arranged between the other first assembly part and the second assembly part opposite to the opening, and flanges at two ends of the two U-shaped thin-wall section steels with the same specification are respectively connected with the corresponding web plates;
and the inner sides of the webs of the other second assembly are respectively provided with two U-shaped thin-wall section steels with the same specification, and flanges of the two U-shaped thin-wall section steels with the same specification are connected with the corresponding webs.
Furthermore, the II-shaped side column comprises two first assemblies with opposite openings and two third assemblies with opposite openings, the two third assemblies respectively comprise two U-shaped thin-wall section steels with the same specification, the openings of the two U-shaped thin-wall section steels with the same specification are in the same direction, and flanges are closely attached and overlapped back to back; and a cavity formed by overlapping the two first assemblies and the two third assemblies is filled with the foam heat-insulating material for heat insulation.
Furthermore, the I-shaped side column comprises three first assemblies and two fourth assemblies which are arranged back to back and are arranged at intervals, wherein the two fourth assemblies are vertically connected with one of the first assemblies and are parallel to the other two first assemblies, and two U-shaped thin-wall section steels with the same specification are respectively connected between one first assembly and one fourth assembly which are parallel to each other.
Furthermore, the center pillar comprises four first assemblies, the four first assemblies surround to form the center pillar with a rectangular cross section, a fifth assembly is connected between one set of the first assemblies, and two U-shaped thin-wall section steels with the same specification are arranged between the other set of the first assemblies and the corresponding fifth assembly respectively.
Further, the cold-formed thin-walled steel composite beam comprises two first assemblies and two sixth assemblies:
the two sixth assemblies comprise two U-shaped thin-wall section steels with different specifications, the openings of the two U-shaped thin-wall section steels with different specifications are in the same direction, the flanges and the flanges are closely attached and overlapped back to back, and the two U-shaped thin-wall section steels with different specifications are fixedly connected by virtue of a plurality of screws which uniformly penetrate through the overlapped flanges along the length direction of the flanges, wherein the web plates of the two U-shaped thin-wall section steels with different specifications are the same in height and thickness;
the two sixth assemblies are arranged back to back, a gap is arranged between the two sixth assemblies, the openings of the two first assemblies are oppositely and respectively arranged at two sides of the two sixth assemblies, and the flanges corresponding to the sixth assemblies and the inner sides of the corresponding webs in the first assemblies are closely attached and overlapped and are fixedly connected by screws.
Further, the thin-walled cold-formed steel composite panel includes:
a plurality of combined units arranged side by side, wherein each combined unit comprises two U-shaped thin-wall section steels with the same specification and opposite openings, foam heat-insulating materials are filled between the two U-shaped thin-wall section steels with the same specification, a gap is arranged between every two adjacent combined units, a plurality of single limb hoops are uniformly arranged along the gap,
many reinforcing bars, level and evenly distributed are a plurality of on two relative surfaces of modular unit, with the help of set up in single limb hoop in the space, many reinforcing bars will be a plurality of modular unit links together.
Furthermore, an angle steel is arranged between the cold-formed thin-wall section steel combination beam and the cold-formed thin-wall section steel combination column, and the cold-formed thin-wall section steel combination beam and the cold-formed thin-wall section steel combination column are detachably connected by virtue of a bolt penetrating through the angle steel; the cold-formed thin-walled steel composite slab is provided with pins, the cold-formed thin-walled steel composite beam is provided with pin holes through which the pins penetrate, and the cold-formed thin-walled steel composite slab and the cold-formed thin-walled steel composite beam are detachably connected by means of the pins.
The assembled cold-formed thin-wall section steel combined house structure system provided by the invention has the beneficial effects that: compared with the prior art, the assembled cold-formed thin-walled steel combined house structure system has the advantages that the columns, the beams and the floor slabs forming the house are formed by overlapping the cold-formed thin-walled steel, the beams and the floor slabs with different sections are formed by overlapping a plurality of U-shaped cold-formed thin-walled steel in a combined mode, the rigidity and the strength of a single component are improved, the house structure with high strength and high rigidity is integrally formed after assembly, the assembled house structure can further adapt to high-rise buildings, the vertical load effect and the horizontal loads of earthquakes, wind and the like can be well borne, cavities are inevitably formed in the overlapped steel skeleton, pipelines and cables can conveniently penetrate through the assembled house structure, the assembled house structure is buried in the wall and the floor slab structure, and the overall layout rationality is also improved.
The invention adopts U-shaped cold-formed thin-walled steel as the main component for superposition, and fills the heat-insulating material in the formed cavity, the single component has light weight and high strength, is not only suitable for 3-8-layer multi-storey building, but also suitable for high-rise building, and has good structural stability and high bearing capacity.
The invention also provides a construction method of the assembled cold-formed thin-wall section steel combined house structure system, which comprises the following steps:
adopting a hot-dip galvanized steel plate with the thickness of 0.85-2.5mm, manufacturing by a rolling cold-bending process, and forming U-shaped thin-wall section steel;
assembling cold-formed thin-wall section steel combined columns, and respectively assembling cold-formed thin-wall section steel combined columns with different shapes according to different placing positions and different sections of the cold-formed thin-wall section steel combined columns;
assembling the cold-formed thin-walled steel composite beam:
the cold-formed thin-wall section steel combined column is connected and fastened with the cold-formed thin-wall section steel combined beam;
and mounting the cold-formed thin-wall section steel combination plate on the cold-formed thin-wall section steel combination beam.
The construction method of the assembled cold-formed thin-wall section steel combined house structure system provided by the invention has the beneficial effects that: all the components are assembled into a whole through the construction process to form a main stress frame of the assembled cold-formed thin-wall section steel combined house structure system, and the assembled cold-formed thin-wall section steel combined house structure system has high deformation resistance and yield strength resistance and is reliable in connection.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a first structural schematic diagram of a prefabricated thin-walled cold-formed steel composite house structural system according to an embodiment of the present invention;
FIG. 2 is a second schematic structural diagram of a prefabricated thin-walled cold-formed steel composite house structural system according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of the connection structure of the corner post and the composite beam in FIG. 1;
FIG. 4 is a schematic structural view of the corner post of FIG. 1;
FIG. 5 is a schematic structural view of the center pillar of FIG. 1;
FIG. 6 is a schematic view of the type II side pillar of FIG. 1;
FIG. 7 is a schematic view of the structure of the I-shaped side pillar of FIG. 1;
FIG. 8 is a schematic structural view of the composite beam of FIG. 1;
fig. 9 is a schematic structural view of the assembled plate of fig. 1.
Wherein, in the figures, the respective reference numerals:
1-cold-bending thin-wall section steel combined column; 2-cold bending thin-wall section steel composite beam; 3-cold-bending thin-wall section steel composite board; 4-corner posts; 5-type I side pillars; 6-II type side pillars; 7-a center pillar; 8-U-shaped thin-wall section steel; 9-opening holes; 10-foam type heat insulating materials; 11-reinforcing steel bars; 12-single limb hoop; 13-concrete; 15-angle steel; 16-bolt.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 and fig. 2, the assembled cold-formed thin-walled steel house structure system provided by the present invention will now be described. The assembled cold-formed thin-walled steel combined house structure system comprises a cold-formed thin-walled steel combined column 1, a cold-formed thin-walled steel combined beam 2 and a cold-formed thin-walled steel combined plate 3, wherein each combined column, combined beam and combined plate is formed by connecting a plurality of U-shaped thin-walled steel sections through superposition of flanges and flanges or superposition of flanges and webs, and each combined column, combined beam and combined plate is provided with a connecting surface connected with other parts; the cold-formed thin-wall steel composite plate 3 is formed by juxtaposing a plurality of U-shaped thin-wall steel sections at intervals through webs, arranging distribution reinforcing steel bars 11 at the upper and lower wing edges of the U-shaped thin-wall steel sections and fixing the distribution reinforcing steel bars by using tie bars, filling foam heat-insulating materials between two adjacent U-shaped thin-wall steel sections which are oppositely arranged, and then integrally pouring concrete; the cold-formed thin-walled steel combination beam 2 is connected between the adjacent cold-formed thin-walled steel combination columns 1 through bolts, and the cold-formed thin-walled steel combination plate 3 is lapped on the adjacent cold-formed thin-walled steel combination beam 2 through pins.
Compared with the prior art, the assembled cold-formed thin-wall section steel combined house structure system provided by the invention adopts cold-formed thin-wall section steel, the structure of the cold-formed thin-wall section steel is formed by overlapping a plurality of U-shaped thin-wall section steel, a frame is erected, the construction speed is high, and the assembly is convenient to install. For the cold-formed thin-wall steel composite board, the filling materials in the board are light materials such as foam boards, so that the self weight of the structure is greatly reduced, and the cold-formed thin-wall steel composite board has good effects of heat preservation, heat insulation, sound insulation and the like; the cold-formed thin-walled steel composite plate has higher internal rigidity and can well bear the vertical load effect and the horizontal load effect of earthquake, wind and the like; the framework of this system has cavities and openings 9 for the passage of pipes and cables, which are buried in the walls and floor structures. Regarding the technical characteristics of the cold-formed thin-wall section steel, the method has the advantages that: the structure is characterized in that the structure system takes U-shaped thin-wall section steel as a basic structural member, the basic structural member is single in form and convenient to construct, in addition, the process performance is good, the node connection is convenient, and redundant exposed columns and corners which are the same as those of an H-shaped section steel structure cannot appear at the corners of the wall; secondly, the material is characterized in that a hot-dip galvanized steel plate with the thickness of 0.85-2.5mm is adopted, and the steel plate is manufactured and formed by a rolling cold-bending process, which is different from a bare steel material adopted by other steel structures, so that the corrosion performance of a steel member is good; thirdly, the strength of the member is characterized in that the strength of the member is the deformation strengthening strength of the material during cold bending processing and forming, the buckling strength is very high and is much higher than the hot rolling state strength of other steel structure materials; fourthly, the connection characteristic, any node of it does not adopt welding, but adopts self-tapping screw or bolted connection, and this kind of connection does not produce welding residual stress and deformation, and intensity is high, connects reliably.
In the invention, the specifications of the U-shaped thin-wall section steel selected by each component of the column, the beam and the floor slab can be the same or different, wherein, aiming at the combined column, different specification combinations can be selected, and the beam and the floor slab are the same. However, during combination, a few specifications are selected as much as possible, so that the assembly is convenient, and the section steels of all specifications have the same thickness. The connection of the section steel in each component adopts the mode of flange-to-flange superposition and flange-to-web superposition, so that the connection reliability is improved. Herein, the distributed steel bars are a plurality of steel bars arranged in parallel, the combined plates are connected together by means of the steel bars, and in order to avoid the position change of the distributed steel bars, a plurality of tie bars are adopted to connect the distributed steel bars.
Referring to fig. 1 to 2 together, as an embodiment of the prefabricated cold-formed thin-walled steel sectional house structure system provided by the present invention, a cold-formed thin-walled steel sectional column 1 includes a corner column 4 having two vertical joint faces applied to a corner of a house, a II-shaped side column 6 having two opposite joint faces, an I-shaped side column 5 having three joint faces, and a center column 7 having four joint faces. In this context, the cross-section of each combination post is different in order to accommodate different positions. For the classification of the combined columns, different sections are combined according to different using positions, and for the corner columns, the positions of the corner columns are the corners of the outer wall body, so that two vertical connecting surfaces are connected with the combined beams; for the II-type side column 6, two opposite connecting surfaces are arranged to connect the combination beam when being applied to the middle parts of the outer wall and the inner wall; the I-shaped side column 5 is provided with three connecting surfaces and can be connected with the combined beam on three sides; and the center column is provided with four connecting surfaces which are connected with the combination beam from four sides.
Referring to fig. 3 to 4, as an embodiment of the prefabricated thin-walled cold-formed steel combined house structural system provided by the present invention, the corner post 4 includes two first assemblies and two second assemblies; the two first assembly parts comprise two U-shaped thin-wall section steels with the same specification, the openings of the two U-shaped thin-wall section steels with the same specification are in the same direction, and the flanges are overlapped back to back; the two second assemblies comprise two U-shaped thin-wall section steels with different specifications, the openings of the two U-shaped thin-wall section steels with different specifications are in the same direction, the flanges and the flanges are closely attached and overlapped back to back, and the two U-shaped thin-wall section steels with different specifications are fixedly connected by virtue of a plurality of screws which uniformly penetrate through the overlapped flanges along the length direction of the flanges, wherein web plates of the two U-shaped thin-wall section steels with different specifications are the same in height and thickness; the two second assembly parts are arranged back to back, a gap is arranged between the two second assembly parts, flanges at the same end of the two second assembly parts are respectively connected with the inner sides of two corresponding webs of one first assembly part, and the opening of the other first assembly part faces the second assembly part; two U-shaped thin-wall section steels with the same specification are arranged between the other first assembly part and a second assembly part opposite to the opening, and flanges at two ends of the two U-shaped thin-wall section steels with the same specification are respectively connected with corresponding webs; the inner sides of the webs of the other second assembly parts are respectively provided with two U-shaped thin-wall section steels with the same specification, and flanges of the two U-shaped thin-wall section steels with the same specification are connected with the corresponding webs. Wherein, a cavity formed by the overlapped corner columns of the U-shaped thin-wall section steel is filled with foam heat-insulating materials; the foam heat-insulating material is adopted, so that the heat insulation is realized, the weight is light, the integral weight is not increased, and the foam heat-insulating material in the corner post is not shown.
Herein, the connection surface is an outer side surface of the first assembly, that is, an outer side surface of a web plate constituting the first assembly, and the connection surface is of the same standard, which is convenient for connection.
Referring to fig. 6, as a specific embodiment of the assembled cold-formed thin-walled steel-made house structure system provided by the present invention, the II-shaped side column 6 includes two first assemblies with opposite openings and two third assemblies with opposite openings, each of the two third assemblies includes two U-shaped thin-walled steels with the same specification, the openings of the two U-shaped thin-walled steels with the same specification are in the same direction, and the flanges are closely attached and overlapped back to back, and the two U-shaped thin-walled steels with the same specification are fixedly connected by means of a plurality of screws uniformly penetrating through the overlapped flanges along the length direction of the flanges, and the flanges at the two ends of the two third assemblies are respectively connected to the inner sides of the webs of the two corresponding first assemblies. Similarly, the cavity formed by the two first assemblies and the two third assemblies being stacked is filled with the foam-type thermal insulation material for thermal insulation, as shown in fig. 6.
Referring to fig. 7, as a specific embodiment of the assembled cold-formed thin-walled steel house structure system provided by the present invention, the I-shaped side column 5 includes three first assemblies and two fourth assemblies disposed back to back with a gap therebetween, the two fourth assemblies are vertically connected to one of the first assemblies, are parallel to the other two first assemblies, and two U-shaped thin-walled steel sections with the same specification are respectively connected between the first and fourth assemblies which are parallel to each other. And similarly, the cavity formed after the U-shaped thin-wall section steel is overlapped is filled with the foam heat-insulating material for heat insulation.
Referring to fig. 5, as a specific embodiment of the assembled cold-formed thin-walled steel house structure system provided in the present invention, the center pillar 7 includes four first assembly members, the four first assembly members surround the center pillar 7 with a rectangular cross section, a fifth assembly member is connected between one of the first assembly members, and two U-shaped thin-walled steel members with the same specification are respectively disposed between the other first assembly member and the corresponding fifth assembly member. And similarly, the cavity formed after the U-shaped thin-wall section steel is overlapped is filled with the foam heat-insulating material for heat insulation.
Referring to fig. 8, as a specific embodiment of the prefabricated thin-walled cold-formed steel combined house structural system provided by the present invention, the thin-walled cold-formed steel combined beam 2 includes two first combined members and two sixth combined members: the two sixth assemblies comprise two U-shaped thin-wall section steels with different specifications, the openings of the two U-shaped thin-wall section steels with different specifications are in the same direction, the flanges and the flanges are closely attached and overlapped back to back, and the two U-shaped thin-wall section steels with different specifications are fixedly connected by virtue of a plurality of screws which uniformly penetrate through the overlapped flanges along the length direction of the flanges, wherein web plates of the two U-shaped thin-wall section steels with different specifications are the same in height and thickness; the two sixth assemblies are arranged back to back, a gap is arranged between the two sixth assemblies, the openings of the two first assemblies are oppositely arranged at two sides of the two sixth assemblies, and the flanges corresponding to the sixth assemblies and the inner sides of the corresponding webs in the first assemblies are closely attached and overlapped and are fixedly connected by screws. The U-shaped thin-wall section steel forming the cold-formed thin-wall section steel combined beam is provided with the opening 9, so that the self weight of the structure can be reduced. And similarly, the cavity formed after the U-shaped thin-wall section steel is overlapped is filled with the foam heat-insulating material for heat insulation.
Referring to fig. 9, as a specific embodiment of the assembled cold-formed thin-walled steel house structure system provided by the present invention, a cold-formed thin-walled steel composition board 3 includes a plurality of combination units arranged side by side and a plurality of steel bars 11, a single combination unit includes two U-shaped thin-walled steel sections with the same specification and opposite openings, a foam thermal insulation material 10 is filled between the two U-shaped thin-walled steel sections with the same specification, a gap is provided between two adjacent combination units, and a plurality of single-limb hoops 12 are uniformly arranged along the gap; the combined slab is characterized in that a plurality of reinforcing steel bars 11 are horizontally and uniformly distributed on two opposite surfaces of the combined units, the single limb hoops 12 are connected with the horizontally distributed reinforcing steel bars 11, the combined units are connected together by the plurality of reinforcing steel bars 11, finally, light concrete is poured, the concrete can be completely poured at one time or only partially poured, and the rest part is poured after the floor slab is installed in place, so that the combined slab is connected into a whole, and the strength of the combined slab is improved. Wherein, the filled foam heat-insulating material can be a foam board, heat-insulating cotton, a spray foaming material and the like.
In the invention, if the cold-formed thin-walled steel composite slab is completely prefabricated, grouting and seam sealing are only needed at the joint of the pin and the composite beam; if the composite slab is partially prefabricated, the remaining concrete portion needs to be cast in place after installation. All the components are finally assembled into a whole through the construction process to form the main stressed frame of the assembled cold-formed thin-wall section steel combined house structure system.
Referring to fig. 9, the U-shaped thin-walled steel 8 used on the cold-formed thin-walled steel composite slab 3 has openings 9, because the concrete can be poured thoroughly to ensure compactness when pouring light concrete; the second reason is to reduce the dead weight of the floor slab, so that the structure is lighter. In addition, in order to reduce the whole weight of the structure, the concrete 13 poured on the combined plate and the concrete poured in the gap of the U-shaped thin-wall section steel 8 are both made of lightweight concrete. Wherein the lightweight concrete can be ceramsite concrete, lightweight aggregate concrete or aerated concrete.
Referring to fig. 2 and 3, as a specific embodiment of the prefabricated thin-walled cold-formed steel combined house structural system provided by the present invention, an angle steel 15 is provided between the thin-walled cold-formed steel combined beam 2 and the thin-walled cold-formed steel combined column 1, and the thin-walled cold-formed steel combined beam 2 and the thin-walled cold-formed steel combined column 1 are detachably connected by a bolt 16 passing through the angle steel 15; the cold-formed thin-walled steel composite slab 3 is provided with pins, the cold-formed thin-walled steel composite beam 2 is provided with pin holes through which the pins penetrate, and the cold-formed thin-walled steel composite slab 3 and the cold-formed thin-walled steel composite beam 2 are detachably connected by the pins. When the house structure system provided by the invention is used for plate-beam lap joint, beam-column connection, column-column connection and column-base connection, angle steel is mostly adopted, one side of the flange is attached to the column, the other side of the flange is attached to a beam web, and then the flange is fastened by bolts. The frame is erected, so that the construction speed is high, and the installation is convenient; any node is not welded but connected by self-tapping screws or bolts, and the connection does not generate welding residual stress and deformation, and has high strength and reliable connection. In addition, in order to improve the strength and rigidity, a rigid support can be used for reinforcement at the joint of the combination beam and the combination column.
Referring to fig. 1 to 2, the present invention further provides a construction method of the prefabricated thin-walled cold-formed steel assembled house structure system, including the following steps:
adopting a hot-dip galvanized steel plate with the thickness of 0.85-2.5mm, manufacturing by a rolling cold-bending process, and forming U-shaped thin-wall section steel;
assembling the cold-formed thin-wall section steel combined column 1, and respectively assembling the cold-formed thin-wall section steel combined columns 1 in different shapes according to different placing positions and different sections;
assembling the cold-formed thin-walled steel composite beam 2:
the cold-formed thin-wall section steel combination column 1 and the cold-formed thin-wall section steel combination beam 2 are connected and fastened by bolts 16;
the cold-formed thin-wall section steel composite plate 3 is lapped on the cold-formed thin-wall section steel composite beam 2 by pins;
and filling foam materials in the gaps of the cold-formed thin-wall steel combined columns 1 and the gaps of the cold-formed thin-wall steel combined beams 2.
The invention provides an assembled cold-formed thin-wall section steel combined house structure system, which has the core technology and process of building structure and building structure as follows: the hot-dip galvanized steel plate with the thickness of 0.85-2.5mm is manufactured and molded by a rolling cold-bending process. The C-shaped steel and the U-shaped steel are used as basic structural members, beams, columns, floor slabs and the like of a main body structure are formed in different combination modes, the rod members are connected through self-tapping screws or bolts, structural measures such as reinforcing members and the like are generally adopted in the installation process, and light materials such as EPS (polystyrene foam), heat insulation cotton, sprayed foam materials and the like can be filled in a cavity between the combined members to play the roles of moisture prevention, heat insulation, sound insulation and the like. Because the thin-wall steel material has high light weight and high strength, and the light foam material is filled in the thin-wall steel material, the combined member formed by combining the thin-wall steel material, such as a column, a beam and a floor slab, has high bearing capacity and light weight, can break through the limitation that the common thin-wall steel structure is only suitable for a multi-layer house, has the applicable height of 12 layers, is light and convenient to hoist, and is convenient to construct.
Therefore, the house structure system provided by the invention improves the stability and the bearing capacity of a single component, and further improves the stability and the bearing capacity of the integrated structure after combination; meanwhile, foam and other heat preservation, heat insulation and sound insulation materials are filled, so that the overall green energy-saving index of the building is improved; the prefabricated concrete floor slab is adopted, the prefabrication degree is high, the prefabricated concrete floor slab is more suitable for large-scale production of shaping and industrialization, and the construction is more convenient and rapid. The assembled house is energy-saving, material-saving, green and environment-friendly, has high industrialization degree, and is a superior house structure form.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (8)

1. Assembled cold-formed thin-walled steel combination house structural system, its characterized in that includes:
the cold-formed thin-wall section steel combined column (1) is formed by connecting a plurality of U-shaped thin-wall section steels after flanges and flanges are overlapped or flanges and webs are overlapped, has connecting surfaces connected with other parts, and is formed by filling foam heat-insulating materials into a cavity;
the cold-formed thin-wall section steel composite beam (2) is formed by connecting a plurality of U-shaped thin-wall section steels after flanges and flanges are overlapped or flanges and webs are overlapped, and is provided with a connecting surface connected with other parts, and the U-shaped thin-wall section steels forming the cold-formed thin-wall section steel composite beam are provided with openings; and
the cold-formed thin-wall section steel composite slab (3) is formed by juxtaposing a plurality of U-shaped thin-wall section steels at intervals through webs, arranging distributed reinforcing steel bars at the upper and lower wing edges of the U-shaped thin-wall section steels and fixing the reinforcing steel bars by using tie bars, filling foam heat-insulating materials between two adjacent oppositely arranged U-shaped thin-wall section steels, and then integrally pouring concrete;
the cold-formed thin-wall section steel combination beam (2) is connected with the adjacent cold-formed thin-wall section steel combination column (1) through bolts, and the cold-formed thin-wall section steel combination plate (3) is connected onto the adjacent cold-formed thin-wall section steel combination beam (2) in a lap joint mode through pins;
the cold-formed thin-walled steel combined column (1) comprises a corner column (4) which is applied to a corner of a house and is provided with two vertical connecting surfaces, a II-type side column (6) with two opposite connecting surfaces, an I-type side column (5) with three connecting surfaces and a middle column (7) with four connecting surfaces;
the corner post (4) comprises two first assemblies and two second assemblies;
the two first assembling parts comprise two U-shaped thin-wall section steels with the same specification, the openings of the two U-shaped thin-wall section steels with the same specification are in the same direction, and flanges are overlapped back to back;
the two second assemblies comprise two U-shaped thin-wall section steels with different specifications, the openings of the two U-shaped thin-wall section steels with different specifications are in the same direction, the flanges and the flanges are closely attached and overlapped back to back, and the two U-shaped thin-wall section steels with different specifications are fixedly connected by virtue of a plurality of screws which uniformly penetrate through the overlapped flanges along the length direction of the flanges, wherein web plates of the two U-shaped thin-wall section steels with different specifications are the same in height and thickness;
the two second assembly parts are arranged back to back, a gap is arranged between the two second assembly parts, flanges at the same end of the two second assembly parts are respectively connected with the inner sides of two corresponding webs of one first assembly part, and the opening of the other first assembly part faces the second assembly part;
two U-shaped thin-wall section steels with the same specification are arranged between the other first assembly part and the second assembly part opposite to the opening, and flanges at two ends of the two U-shaped thin-wall section steels with the same specification are respectively connected with the corresponding web plates;
and the inner sides of the webs of the other second assembly are respectively provided with two U-shaped thin-wall section steels with the same specification, and flanges of the two U-shaped thin-wall section steels with the same specification are connected with the corresponding webs.
2. The fabricated thin-walled steel sectional building structural system of claim 1, wherein: the II-shaped side column (6) comprises two first assemblies with opposite openings and two third assemblies with opposite openings, the two third assemblies respectively comprise two U-shaped thin-wall section steels with the same specification, the openings of the two U-shaped thin-wall section steels with the same specification are in the same direction, and flanges are closely attached and overlapped back to back; and a cavity formed by overlapping the two first assemblies and the two third assemblies is filled with the foam heat-insulating material for heat insulation.
3. The fabricated thin-walled steel sectional building structural system of claim 1, wherein: the I-shaped side column (5) comprises three first assemblies and two fourth assemblies which are arranged back to back and in a clearance mode, wherein the two fourth assemblies are vertically connected with one of the first assemblies and are parallel to the other two first assemblies, and two U-shaped thin-wall section steels with the same specification are respectively connected between one first assembly and one fourth assembly which are parallel to each other.
4. The fabricated thin-walled steel sectional building structural system of claim 1, wherein: the center pillar (7) includes four first combination piece, four first combination piece surrounds and constitutes the section for the rectangle the center pillar, relative wherein a set of connect the fifth combination piece between the first combination piece, another group first combination piece and corresponding be equipped with two U-shaped thin wall shaped steel that the specification is the same between the fifth combination piece respectively.
5. Assembled thin-walled steel sectional building structural system according to claim 1, wherein the thin-walled steel sectional composite beam (2) comprises two of the first and sixth assemblies:
the two sixth assemblies comprise two U-shaped thin-wall section steels with different specifications, the openings of the two U-shaped thin-wall section steels with different specifications are in the same direction, the flanges and the flanges are closely attached and overlapped back to back, and the two U-shaped thin-wall section steels with different specifications are fixedly connected by virtue of a plurality of screws which uniformly penetrate through the overlapped flanges along the length direction of the flanges, wherein the web plates of the two U-shaped thin-wall section steels with different specifications are the same in height and thickness;
the two sixth assemblies are arranged back to back, a gap is arranged between the two sixth assemblies, the openings of the two first assemblies are oppositely and respectively arranged at two sides of the two sixth assemblies, and the flanges corresponding to the sixth assemblies and the inner sides of the corresponding webs in the first assemblies are closely attached and overlapped and are fixedly connected by screws.
6. The fabricated thin-walled steel modular building structure system according to claim 1, wherein the thin-walled steel modular panels (3) comprise:
the combined unit comprises a plurality of combined units which are arranged side by side, wherein each combined unit comprises two U-shaped thin-wall section steels with the same specification and opposite openings, a foam heat-insulating material (10) is filled between the two U-shaped thin-wall section steels with the same specification, a gap is formed between every two adjacent combined units, and a plurality of single limb hoops (12) are uniformly arranged along the gap; the distribution reinforcement (11) connects a plurality of the combined units together.
7. The modular thin-walled steel sectional building structure system according to any one of claims 1 to 6, wherein: an angle steel (15) is arranged between the cold-formed thin-wall steel combined beam (2) and the cold-formed thin-wall steel combined column (1), and the cold-formed thin-wall steel combined beam (2) and the cold-formed thin-wall steel combined column (1) are detachably connected by virtue of the bolt (16) penetrating through the angle steel (15); the thin-walled cold-formed steel composite slab (3) is provided with pins, the thin-walled cold-formed steel composite beam (2) is provided with pin holes through which the pins penetrate, and the thin-walled cold-formed steel composite slab (3) and the thin-walled cold-formed steel composite beam (2) are detachably connected by means of the pins.
8. The construction method of the prefabricated thin-walled cold-formed steel modular house structural system according to any one of claims 1 to 7, characterized in that: the method comprises the following steps:
hot-dip galvanized steel plates with the thickness of 0.85-2.5mm are manufactured by a rolling cold-bending process to form U-shaped thin-wall section steel (8);
assembling the cold-formed thin-wall section steel combined column (1), and respectively assembling the cold-formed thin-wall section steel combined columns (1) with different shapes according to different placing positions and different sections of the cold-formed thin-wall section steel combined columns;
assembling the cold-formed thin-walled steel composite beam (2):
the cold-formed thin-wall section steel combined column (1) and the cold-formed thin-wall section steel combined beam (2) are connected and fastened by bolts (16);
the cold-formed thin-wall section steel composite plate (3) is lapped on the cold-formed thin-wall section steel composite beam (2) by means of pins;
and filling foam materials in the gaps of the cold-formed thin-wall steel combined columns (1) and the gaps of the cold-formed thin-wall steel combined beams (2).
CN201811339798.7A 2018-11-12 2018-11-12 Assembled cold-formed thin-wall section steel combined house structure system and construction method Active CN109339242B (en)

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CN106187014A (en) * 2016-08-08 2016-12-07 长安大学 A kind of desulfurized gypsum base heat preservation slurry and lightweight light gauge cold-formed steel shape combined wall thereof
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