CN111622403A - Cold-formed thin-wall section steel composite floor and modular prefabrication and assembly method thereof - Google Patents
Cold-formed thin-wall section steel composite floor and modular prefabrication and assembly method thereof Download PDFInfo
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- CN111622403A CN111622403A CN202010439773.5A CN202010439773A CN111622403A CN 111622403 A CN111622403 A CN 111622403A CN 202010439773 A CN202010439773 A CN 202010439773A CN 111622403 A CN111622403 A CN 111622403A
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- E—FIXED CONSTRUCTIONS
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- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
- E04B5/10—Load-carrying floor structures formed substantially of prefabricated units with metal beams or girders, e.g. with steel lattice girders
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Abstract
The invention discloses a cold-formed thin-wall steel composite floor system and a modularized prefabrication and assembly method thereof, wherein the composite floor system comprises a cold-formed thin-wall steel skeleton, an autoclaved aerated concrete slab, a reinforcing mesh, light concrete and a finishing layer, wherein the cold-formed thin-wall steel skeleton is in a grid shape, and the autoclaved aerated concrete slab is embedded into the grid of the cold-formed thin-wall steel skeleton and is fixedly connected with the cold-formed thin-wall steel skeleton; the reinforcing mesh is arranged above the autoclaved aerated concrete slab and is cast in situ with the lightweight concrete into a whole; the finish coat is arranged on the upper surface of the light concrete and is fixedly connected with the cold-bending thin-wall steel framework. The composite floor has the excellent performance of definite and reasonable stress and force transfer, can meet the requirement of large span, is easy to divide the space flexibly and adapts to the requirement of the residential market. The assembling method has the advantages of simple process, high speed and good integrity, is favorable for realizing building energy conservation, and is convenient for industrial production and modular construction of a green building of a cold-formed thin-walled steel structure.
Description
Technical Field
The invention relates to a multi-layer cold-formed thin-wall steel residential structure, in particular to a cold-formed thin-wall steel composite floor system and a modular prefabrication and assembly method thereof.
Background
Over the years, cold-formed steel structures have been widely used abroad in low-rise houses and small industrial buildings due to their advantages of light dead weight, easy forming, environmental protection, recyclability, etc., and are expanding to multi-story buildings. China introduces a large number of low-rise cold-formed steel structure housing technologies from abroad, and the cold-formed steel structure is mainly applied to buildings below three floors till now. Due to numerous population, short land resources and serious earthquake disasters, the cold-bending thin-wall steel structure house is developed from a low layer to a multi-layer, which is more in line with the national conditions of China. In addition, the existing prefabrication and assembly technology of the cold-formed thin-walled steel house is limited to a steel skeleton, a large amount of manpower is still needed to finish the installation of plates and pipelines on a construction site, and structural measures of walls, floors and related connections which can meet the prefabrication and assembly technology of the modular house are lacked. Therefore, the research on the modularized full-prefabricated assembly technology enables the production process of the building to be consistent with the industrialized requirement as the assembly of automobiles and furniture through the factory (standardized and large-scale) production of building components and the field assembly construction, is the premise that a green building of a cold-bending thin-wall steel structure is popularized and applied in China, and is an effective way for accelerating the housing industrialization and the prefabrication assembly.
In the existing cold-bending thin-wall steel structure system, the floor system commonly used at home and abroad mainly comprises three types, namely a light steel wood floor slab, a profiled steel sheet composite floor slab and a cast-in-place concrete composite floor slab. The light steel-wood floor slab has light dead weight and high construction speed, but is only suitable for the condition that the slab span is small, and the floor slab has the defects of small rigidity, poor anti-vibration effect and the like. The profiled steel sheet composite floor slab is high in cost and is mainly used in multi-story and high-rise buildings. The cast-in-place concrete composite floor slab has the advantages of high rigidity, impact resistance, good anti-vibration effect, good economy and the like, but has the advantages of heavy weight, low installation speed and higher requirement on construction conditions. The autoclaved lightweight aerated concrete (ALC) floor slab adopted in Japan can greatly reduce the dead weight of the structure and has better use function, but the floor slab has larger thickness and is mainly used for low-rise steel structure houses.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide a novel cold-formed thin-wall section steel composite floor system with definite and reasonable stress and force transmission.
The invention also aims to provide a modular prefabricated assembly method of the combined floor system.
The technical scheme is as follows: the invention discloses a cold-formed thin-wall steel composite floor which comprises a cold-formed thin-wall steel skeleton, an autoclaved aerated concrete slab, a reinforcing mesh, light concrete and a finish coat, wherein the cold-formed thin-wall steel skeleton is latticed, and the autoclaved aerated concrete slab is embedded into the latticed of the cold-formed thin-wall steel skeleton and is fixedly connected with the cold-formed thin-wall steel skeleton; the reinforcing mesh is arranged above the autoclaved aerated concrete slab and is cast in situ with the lightweight concrete into a whole; the finish coat is arranged on the upper surface of the light concrete and is fixedly connected with the cold-bending thin-wall steel framework.
Preferably, the cold-formed thin-walled steel framework comprises a cold-formed thin-walled C-shaped edge beam, an I-shaped rib beam, a right-angled stiffening member, a steel drawstring and a connecting beam, wherein the I-shaped rib beam comprises a longitudinal I-shaped rib beam and a transverse I-shaped rib beam which are arranged in a criss-cross manner, two ends of the longitudinal I-shaped rib beam and two ends of the transverse I-shaped rib beam are respectively embedded into the connecting beam and the cold-formed thin-walled C-shaped edge beam, and the end parts of the longitudinal I-shaped rib beam and the transverse I-shaped rib beam are respectively fixedly connected with the connecting beam and the cold-formed thin-walled C-shaped edge beam through; the steel drawstring is positioned below the cold-bending thin-wall C-shaped edge beam and the longitudinal I-shaped rib beam and fixedly connected with the cold-bending thin-wall C-shaped edge beam and the lower flange of the longitudinal I-shaped rib beam into a whole.
Preferably, the longitudinal I-shaped rib beam and the transverse I-shaped rib beam respectively comprise two cold-formed thin-wall C-shaped steel beams and profiled steel sheets, and the webs of the two cold-formed thin-wall C-shaped steel beams are fixedly arranged back to back through a plurality of profiled steel sheets.
Preferably, the cold-formed thin-wall C-shaped steel beam of the transverse I-shaped rib beam is provided with a through hole for penetrating into the longitudinal I-shaped rib beam to form a criss-cross structure, and the joint of the longitudinal I-shaped rib beam and the transverse I-shaped rib beam is fixed through a right-angle stiffening member.
Preferably, the autoclaved aerated concrete slab is positioned between the adjacent I-shaped rib beams, and the autoclaved aerated concrete slab is fixedly connected with the lower flanges of the I-shaped rib beams through self-tapping screws.
Preferably, the cavity of the profiled steel sheet of the I-shaped rib beam is filled with lightweight concrete.
Preferably, the cold-formed thin-walled C-shaped boundary beam is a C-shaped steel beam, and a plurality of bolt holes are formed in a web plate of the C-shaped steel beam.
Preferably, the connecting beam comprises two cold-formed thin-wall C-shaped steel beams, profiled steel sheets, a light concrete filling layer, a vertical connecting bolt and a horizontal connecting bolt, webs of the two cold-formed thin-wall C-shaped steel beams are fixedly arranged back to back through the profiled steel sheets, and a cavity formed by the webs of the two cold-formed thin-wall C-shaped steel beams and the profiled steel sheets is filled with light concrete; the vertical connecting bolt is vertically arranged in a lightweight concrete filling layer of the profiled steel sheet; the horizontal connecting bolt penetrates through a web plate of the super-cooled thin-wall C-shaped steel beam and the profiled steel sheet and is embedded in the lightweight concrete filling layer.
The invention relates to an assembling method of a cold-formed thin-wall steel composite floor, which comprises the following steps:
s1, mounting connecting beams of the cold-bending thin-wall steel framework, cold-bending thin-wall C-shaped side beams and longitudinal I-shaped rib beams:
temporarily fixing two connecting beams according to the longitudinal length of the cold-formed thin-wall section steel composite floor system, embedding a longitudinal I-shaped rib beam into a cold-formed thin-wall C-shaped steel beam of the connecting beams, and fixedly connecting the end part of the longitudinal I-shaped rib beam with the cold-formed thin-wall C-shaped steel beam of one connecting beam by adopting a right-angle stiffening piece and a self-tapping screw; after all the longitudinal I-shaped rib beams are installed, the end parts of the cold-formed thin-wall C-shaped side beams are embedded into the cold-formed thin-wall C-shaped steel beams of the connecting beams and are fixedly connected through self-tapping screws;
s2, mounting the autoclaved aerated concrete slab and the transverse I-shaped rib beam:
removing the connecting beam which is not fixedly connected with the end parts of the longitudinal I-shaped rib beams in the step S1, embedding the first row of autoclaved aerated concrete slabs into the upper parts of the lower flanges of the two adjacent longitudinal I-shaped rib beams, and fixedly connecting the first row of autoclaved aerated concrete slabs with the lower flanges of the longitudinal I-shaped rib beams through self-tapping screws; penetrating a first transverse I-shaped rib beam through a longitudinal I-shaped rib beam, embedding the end part of the first transverse I-shaped rib beam into the cold-formed thin-wall C-shaped side beam, and fixedly connecting the first transverse I-shaped rib beam and the cold-formed thin-wall C-shaped side beam through a self-tapping screw;
s3, repeating the step S2, and sequentially installing the subsequent autoclaved aerated concrete slabs and the transverse I-shaped rib beam; mounting the connecting beam removed in the step (2) at the end part of the longitudinal I-shaped rib beam, namely embedding the end part of the longitudinal I-shaped rib beam into the cold-formed thin-wall C-shaped steel beam of the connecting beam and fixedly connecting the connecting beam with a self-tapping screw through a right-angle stiffening piece; meanwhile, the end part of the cold-formed thin-wall C-shaped side beam is embedded into the cold-formed thin-wall C-shaped steel beam of the connecting beam and is fixedly connected with the cold-formed thin-wall C-shaped steel beam through a self-tapping screw;
s4, mounting a steel pull belt:
arranging a steel pull belt at the lower part of the longitudinal I-shaped rib beam, and fixedly connecting the lower flange of the longitudinal I-shaped rib beam with the steel pull belt by adopting self-tapping screws;
s5, installing a reinforcing mesh, pouring light concrete and paving a finishing layer:
fully paving a reinforcing mesh on the upper part of the autoclaved aerated concrete slab, and pouring light concrete in the upper part of the autoclaved aerated concrete slab, the longitudinal I-shaped rib beam, the transverse I-shaped rib beam and the cavity of the connecting beam to form a steel floor system; and laying a finishing coat.
The invention discloses a modular prefabrication and assembly method of a cold-formed thin-wall steel composite floor, which comprises the following steps: firstly, prefabricating cold-formed thin-wall section steel composite floor systems in batches in a factory according to the steps S1 to S5, wherein in the steps S2 to S3, autoclaved aerated concrete slabs are not arranged between the cold-formed thin-wall C-shaped side beams and the adjacent longitudinal I-shaped rib beams to reserve rear assembling positions between the adjacent floor systems; then, mounting the prefabricated cold-formed thin-wall section steel composite floor above the lower-layer wall, and enabling the lower parts of the vertical connecting bolts in the connecting beams to penetrate through the top guide rail of the lower-layer wall and be fixedly connected; when the cold-bending thin-wall steel composite floor system is arranged on the same floor, the post-assembling position of the cold-bending thin-wall steel composite floor system is arranged on one side of the connecting beam of the adjacent floor system, the cold-bending thin-wall C-shaped side beam at the post-assembling position is embedded into the cold-bending thin-wall C-shaped steel beam of the connecting beam of the adjacent floor system, and the horizontal connecting bolt penetrates through the preformed hole of the cold-bending thin-wall C-shaped side beam web plate and is screwed to complete the fixed connection between the adjacent floor systems; sequentially laying an autoclaved aerated concrete slab and a reinforcing mesh at a reserved rear assembly position between the cold-formed thin-wall C-shaped side beam and the adjacent longitudinal I-shaped rib beam, pouring light concrete and laying a surface layer to finish the installation of the whole floor; and (4) enabling the upper parts of the vertical connecting bolts to penetrate through the top guide rail of the upper-layer wall body and be fixedly connected, and continuing to install the upper-layer floor.
Has the advantages that: compared with the prior art, the composite floor system has the excellent performances of energy conservation, environmental protection and definite and reasonable stress and force transmission, is favorable for realizing building energy conservation, and is convenient for industrial production and modular construction. The cold-formed thin-wall steel composite floor system can be prefabricated in a factory, only the assembly work between the composite floor system and a wall body is carried out on the site, the process is simple, and the construction speed is high. The I-shaped rib beam composed of the cold-formed thin-wall C-shaped steel beam and the profiled steel sheet has the advantages of good bending resistance, rigidity and stability and the like, the # -shaped light steel framework composed of the I-shaped rib beam bears the main load of the floor, the autoclaved aerated concrete slab can be used as a permanent template, the self weight of the floor slab is reduced, the thickness of the floor slab is reduced, the indoor clear height is increased, and the floor slab of a large-bay residence can meet the standard requirement; meanwhile, the rigidity of the composite floor is improved by the autoclaved aerated concrete slab, the bottom of the floor is flat and smooth, decoration is easy, and a ceiling is not required, so that the novel cold-formed thin-walled steel composite floor can be suitable for a multi-layer cold-formed thin-walled steel structure house. In addition, the vertical connecting bolts and the horizontal connecting bolts of the connecting beams respectively connect the upper layer wall body and the lower layer wall body with the adjacent composite floor to form a whole, and the reinforcing mesh and the lightweight concrete cast-in-place layer can effectively avoid the problems of floor cracking, leakage and the like. Therefore, the cold-formed thin-walled steel composite floor system can effectively ensure the integrity and durability of the modular cold-formed thin-walled steel house structure, and can be suitable for a modular multi-layer cold-formed thin-walled steel house.
Drawings
FIG. 1 is a schematic structural view of a novel cold-formed thin-walled steel composite floor system of the present invention;
FIG. 2 is a structural cross-sectional view of a composite floor system according to the present invention;
FIG. 3 is a structural diagram of a light steel skeleton in the composite floor system of the present invention;
FIG. 4 is a structural view of the cold-formed thin-walled C-section steel edge beam of the present invention;
FIG. 5 is a structural view of an I-shaped rib of the present invention;
FIG. 6 is a schematic view of the connection of the longitudinal and transverse I-shaped ribs of the present invention;
FIG. 7 is a schematic view of the reinforced connection of the transverse I-shaped rib beam and the cold-formed thin-walled C-shaped steel edge beam in the present invention;
FIG. 8 is a structural view of an attachment beam of the present invention;
FIG. 9 is a cross-sectional view of the construction of the present invention as it would appear when connected to an adjacent building panel;
FIG. 10 is a sectional view of the connection structure of the composite floor system of the present invention with upper and lower wall bodies;
FIG. 11 is a schematic view of the modular assembly of the modular floor system of the present invention;
in the figure: the steel-reinforced concrete composite wall comprises a cold-formed thin-wall steel skeleton 1, an autoclaved aerated concrete slab 2, a reinforcing mesh 3, light concrete 4, a finishing coat 5, bolt holes 6, a cold-formed thin-wall C-shaped side beam 7, an I-shaped rib beam 8, a longitudinal I-shaped rib beam 81, a transverse I-shaped rib beam 82, through holes 83, a right-angle stiffener 9, a steel pull belt 10, self-tapping screws 11, a cold-formed thin-wall C-shaped steel beam 12, a profiled steel plate 13, a light concrete filling layer 14, a connecting beam 15, vertical connecting bolts 16, horizontal connecting bolts 17, a lower-layer wall 18, a lower-layer wall top guide rail 19, an upper-layer wall 20 and an upper-layer wall top guide rail 21.
Detailed Description
The invention is further described below with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 and 2, the composite floor system of the invention comprises a cold-formed thin-wall steel skeleton 1, an autoclaved aerated concrete slab 2, a reinforcing mesh 3, light concrete 4 and a veneer layer 5, wherein the cold-formed thin-wall steel skeleton 1 is formed into a grid shape through an i-shaped rib beam 8, the autoclaved aerated concrete slab 2 is embedded between the adjacent i-shaped rib beams 8 of the cold-formed thin-wall steel skeleton 1, and the autoclaved aerated concrete slab 2 is fixedly connected with the lower flange of the i-shaped rib beam 8 through a self-tapping screw 11; the reinforcing mesh 3 is positioned above the autoclaved aerated concrete slab 2 and is cast in situ with the lightweight concrete 4 into a whole; the facing layer 5 is positioned above the lightweight concrete cast-in-place layer and is connected with the upper flange of the I-shaped rib beam 8 into a whole through self-tapping screws 11.
As shown in figure 3, the cold-formed thin-walled steel skeleton 1 is formed by connecting a cold-formed thin-walled C-shaped side beam 7, an I-shaped rib beam 8, a connecting beam 15, a right-angle stiffener 9 and a steel pulling strip 10 through a self-tapping screw 11, as shown in figure 4, the cold-formed thin-walled C-shaped side beam 7 is of a C-shaped steel beam structure, and a web plate of the cold-formed thin-walled C-shaped steel skeleton is provided with a reserved bolt hole 6. As shown in fig. 3, 2 cold-formed thin-walled C-shaped edge beams 7 are respectively arranged at two longitudinal sides of the cold-formed thin-walled steel skeleton 1; the 2 connecting beams 15 are respectively arranged at the two transverse sides of the cold-formed thin-wall steel skeleton 1, and the end parts of the cold-formed thin-wall C-shaped side beams 7 are embedded into the C-shaped grooves of the connecting beams 15 and fixedly connected through self-tapping screws 11. As shown in fig. 5, the i-shaped rib beam 8 comprises two cold-formed thin-wall C-shaped steel beams 12 and profiled steel sheets 13 which are arranged back to back, webs of the two cold-formed thin-wall C-shaped steel beams 12 are fixedly connected through a plurality of profiled steel sheets 3 and self-tapping screws 11, and a cavity of the profiled steel sheet 13 of the i-shaped rib beam is filled with lightweight concrete 4. As shown in FIG. 6, the I-shaped rib beam 8 is divided into a longitudinal I-shaped rib beam 81 and a transverse I-shaped rib beam 82, the cold-formed thin-wall C-shaped steel beam 12 of the transverse I-shaped rib beam is provided with through holes 83 for penetrating the longitudinal I-shaped rib beam to form a criss-cross grid structure, and the joint of the longitudinal I-shaped rib beam and the transverse I-shaped rib beam is fixedly connected with a self-tapping screw 11 through a right-angle stiffening member 9. As shown in fig. 7, two ends of the longitudinal i-shaped rib beam 81 and the transverse i-shaped rib beam 82 are respectively embedded into the C-shaped grooves of the connecting beam 15 and the cold-formed thin-walled C-shaped edge beam 7, and the end parts of the longitudinal i-shaped rib beam 81 and the transverse i-shaped rib beam 82 are fixedly connected with the connecting beam 15 and the cold-formed thin-walled C-shaped edge beam 7 through the right-angle stiffener 9 and the self-tapping screw 11. The steel drawstring 10 is positioned below the cold-bending thin-wall C-shaped edge beam 7 and the longitudinal I-shaped rib beam 81, and is connected with the cold-bending thin-wall C-shaped edge beam 7 and the lower flange of the longitudinal I-shaped rib beam 81 into a whole through a self-tapping screw 11.
As shown in fig. 8 to 11, the coupling beam 15 is a pulling structure member of an adjacent floor slab and upper and lower wall bodies, the structure of the coupling beam 15 is similar to that of the i-shaped rib beam 8, and includes two cold-bending thin-wall C-shaped steel beams 12, a profiled steel plate 13, a lightweight concrete filling layer 14, a vertical connecting bolt 16 and a horizontal connecting bolt 17, webs of the two cold-bending thin-wall C-shaped steel beams 12 are fixedly arranged back to back through the profiled steel plate 13, and a cavity formed by the webs of the two cold-bending thin-wall C-shaped steel beams 12 and the profiled steel plate 13 is filled with lightweight concrete 14; the vertical connecting bolt 16 is vertically arranged in the light concrete filling layer 14 of the profiled steel sheet 13; horizontal connecting bolts 17 penetrate through the super-cooling bent thin-wall C-shaped steel beam 12 and the profiled steel sheet 13 and are pre-embedded in the lightweight concrete filling layer 14. After the vertical connecting bolt 16 is fixedly connected with a top guide rail 19 of a lower-layer wall 18, the horizontal connecting bolt 17 passes through a reserved bolt hole 6 of a cold-bending thin-wall C-shaped side beam 7 web plate in the combined floor system on one side of the connecting beam 15 and is screwed by a nut, and adjacent floor plates are connected into a whole; the upper part of the vertical connecting bolt 16 passes through the top guide rail 21 of the upper layer wall body 20 and is screwed by a screw cap, and the upper layer wall body and the lower layer wall body are connected into a whole.
The prefabricating and assembling method of the cold-formed thin-wall section steel composite floor comprises the following steps of:
s1, mounting the connecting beam 15 of the cold-bending thin-wall steel skeleton 1, the cold-bending thin-wall C-shaped side beam 7 and the longitudinal I-shaped rib beam 81: temporarily fixing two connecting beams 15 according to the longitudinal length of the cold-formed thin-wall steel composite floor system, embedding a longitudinal I-shaped rib beam 81 into a cold-formed thin-wall C-shaped steel beam 12 of the connecting beams 15, and fixedly connecting the end part of the longitudinal I-shaped rib beam 81 with the cold-formed thin-wall C-shaped steel beam 12 of one connecting beam 15 by adopting a right-angle stiffening piece 9 and a self-tapping screw 11; after all the longitudinal I-shaped rib beams 81 are installed, the end parts of the cold-formed thin-wall C-shaped side beams 7 are embedded into the cold-formed thin-wall C-shaped steel beams 12 of the connecting beams 15 and are fixedly connected through self-tapping screws 11.
S2, mounting the autoclaved aerated concrete slab 2 and the transverse I-shaped rib beam 82: removing the connecting beam 15 which is not fixedly connected with the end parts of the longitudinal I-shaped rib beams 81 in the step S1, embedding the first row of autoclaved aerated concrete slabs 2 into the upper parts of the lower flanges of the two adjacent longitudinal I-shaped rib beams 81, and fixedly connecting the lower flanges of the longitudinal I-shaped rib beams 81 through self-tapping screws 11; a first transverse I-shaped rib beam 82 penetrates through the longitudinal I-shaped rib beam 81, the end part of the first transverse I-shaped rib beam 82 is embedded into the cold-formed thin-wall C-shaped side beam 7 and is fixedly connected with the cold-formed thin-wall C-shaped side beam through a self-tapping screw 11;
s3, repeating the step S2, and sequentially installing the subsequent autoclaved aerated concrete slabs 2 and the transverse I-shaped rib beam 82; mounting the connecting beam 15 removed in the step S2 on the end of the longitudinal i-shaped rib beam 81, namely embedding the end of the longitudinal i-shaped rib beam 81 into the cold-formed thin-walled C-shaped steel beam 12 of the connecting beam 15 and fixedly connecting the connecting beam with the tapping screw 11 through the right-angle stiffener 9; embedding the end part of the cold-formed thin-wall C-shaped side beam 7 into the cold-formed thin-wall C-shaped steel beam 12 of the connecting beam 15 and fixedly connecting the end part of the cold-formed thin-wall C-shaped side beam by a tapping screw 11;
s4, mounting the steel pull belt 10: arranging the steel pull belt 10 at the lower part of the longitudinal I-shaped rib beam 81, and fixedly connecting the lower flange of the longitudinal I-shaped rib beam 81 with the steel pull belt 10 by adopting a self-tapping screw 11;
s5, installing the reinforcing mesh 3, pouring the light concrete 4 and paving the finishing layer 5: fully laying the reinforcing mesh 3 and the upper part of the autoclaved aerated concrete slab 2, and pouring lightweight concrete in the cavities of the upper part of the autoclaved aerated concrete slab 2, the longitudinal I-shaped rib beam 81, the transverse I-shaped rib beam 82 and the connecting beam 15 to form a steel floor system; and paving a finishing layer 5.
The modular prefabrication and assembly method of the cold-formed thin-wall steel composite floor comprises the following steps:
firstly, prefabricating the cold-formed thin-walled steel composite floor system in batches in a factory according to the steps S1 to S5, wherein in the steps S2 to S3, the autoclaved aerated concrete slabs 2 are not arranged between the cold-formed thin-walled C-shaped side beam 7 and the adjacent longitudinal I-shaped rib beam 81 so as to reserve a post-assembling position between the adjacent floor systems; then, mounting the prefabricated thin-walled cold-formed steel composite floor above the lower-layer wall 18, and fixedly connecting the lower parts of the vertical connecting bolts 16 in the connecting beams 15 through the top guide rails 19 of the lower-layer wall 18; when the cold-bending thin-wall steel composite floor system is arranged on the same floor, the post-assembling position of the cold-bending thin-wall steel composite floor system is arranged on one side of the connecting beam 15 of the adjacent floor system, the cold-bending thin-wall C-shaped side beam 7 at the post-assembling position is embedded into the cold-bending thin-wall C-shaped steel beam 12 of the connecting beam 15 of the adjacent floor system, and the horizontal connecting bolt 17 penetrates through the preformed hole 6 of the web plate of the cold-bending thin-wall C-shaped side beam 7 and is screwed to complete the fixed connection between the adjacent floor systems; sequentially laying an autoclaved aerated concrete slab 2 and a reinforcing mesh 3 at a rear assembly position reserved between the cold-formed thin-wall C-shaped side beam 7 and the adjacent longitudinal I-shaped rib beam 81, pouring light concrete, laying a surface layer and finishing the installation of the whole floor; the upper part of the vertical connecting bolt 16 passes through the top guide rail 21 of the upper layer wall body 20 and is fixedly connected, and the installation of the upper layer floor is continued.
The cold-formed thin-wall section steel composite floor system and the tie connecting beams of the cold-formed thin-wall section steel composite floor system, the adjacent floor slabs, the upper layer wall body and the lower layer wall body are prefabricated and produced in a factory, and then are assembled through bolt connection in a construction site, so that the post-assembly work is less, and the construction speed is greatly improved. The I-shaped rib beam is used as a light steel framework of the composite floor system, and the autoclaved aerated concrete slab is used as a permanent template, so that the self weight of the floor slab is reduced, the thickness of the floor slab is reduced, and the arrangement flexibility of the large-bay residence is greatly improved. In addition, the vertical connecting bolts and the horizontal connecting bolts of the connecting beams respectively connect the upper layer wall body, the lower layer wall body and the adjacent composite floor system into a whole, so that the overall performance of the composite floor system is further improved. The problems of cracking and leakage of the floor and the like are avoided by adopting the reinforcing mesh and the lightweight concrete cast-in-place layer. Therefore, the cold-formed thin-walled steel composite floor system can effectively ensure the integrity and durability of the modular cold-formed thin-walled steel house structure, and can be suitable for a modular multi-layer cold-formed thin-walled steel house.
Claims (10)
1. The utility model provides a thin-walled cold-formed steel composite floor, its characterized in that: the composite floor comprises a cold-formed thin-wall steel skeleton (1), an autoclaved aerated concrete slab (2), a reinforcing mesh (3), light concrete (4) and a finishing coat (5), wherein the cold-formed thin-wall steel skeleton (1) is in a grid shape, and the autoclaved aerated concrete slab (2) is embedded into the grid of the cold-formed thin-wall steel skeleton (1) and is fixedly connected with the cold-formed thin-wall steel skeleton (1); the reinforcing mesh (3) is arranged above the autoclaved aerated concrete slab (2) and is cast in situ with the lightweight concrete (4) into a whole; the finishing coat (5) is arranged on the upper surface of the lightweight concrete (4) and is fixedly connected with the cold-bending thin-wall steel skeleton (1).
2. The cold-formed thin-walled steel composite floor system according to claim 1, wherein: the cold-formed thin-wall steel skeleton (1) comprises a cold-formed thin-wall C-shaped edge beam (7), an I-shaped rib beam (8), a right-angle stiffening member (9), a steel pulling belt (10) and a connecting beam (15), wherein the I-shaped rib beam (8) comprises a longitudinal I-shaped rib beam (81) and a transverse I-shaped rib beam (82) which are arranged in a criss-cross mode, two ends of the longitudinal I-shaped rib beam (81) and two ends of the transverse I-shaped rib beam (82) are respectively embedded into the connecting beam (15) and the cold-formed thin-wall C-shaped edge beam (7), and the end parts of the longitudinal I-shaped rib beam (81) and the transverse I-shaped rib beam (82) are respectively fixedly connected with the connecting beam (15) and the cold-formed thin-wall C-shaped edge beam (7) through the right; the steel drawstring (10) is positioned below the cold-bending thin-wall C-shaped edge beam (7) and the longitudinal I-shaped rib beam (81) and fixedly connected with the cold-bending thin-wall C-shaped edge beam (7) and the lower flange of the longitudinal I-shaped rib beam (81) into a whole.
3. The cold-formed thin-walled steel composite floor system according to claim 2, wherein: the longitudinal I-shaped rib beam (81) and the transverse I-shaped rib beam (82) comprise two cold-bending thin-wall C-shaped steel beams (12) and profiled steel plates (13), and webs of the two cold-bending thin-wall C-shaped steel beams (12) are fixedly arranged back to back through a plurality of profiled steel plates (3).
4. The cold-formed thin-walled steel composite floor system according to claim 3, wherein: the cold-bending thin-wall C-shaped steel beam (12) of the transverse I-shaped rib beam (82) is provided with a through hole (83) for penetrating through the longitudinal I-shaped rib beam (81) to form a criss-cross structure, and the joint of the longitudinal I-shaped rib beam (81) and the transverse I-shaped rib beam (82) is fixed through a right-angle stiffening member (9).
5. The cold-formed thin-walled steel composite floor system according to claim 2, wherein: the autoclaved aerated concrete slab (2) is positioned between the adjacent I-shaped rib beams (8), and the autoclaved aerated concrete slab (2) is fixedly connected with the lower flange of the I-shaped rib beam (8) through self-tapping screws (11).
6. The cold-formed thin-walled steel composite floor system according to claim 2, wherein: and the cavity of the profiled steel sheet (13) of the I-shaped rib beam (8) is filled with lightweight concrete (4).
7. The cold-formed thin-walled steel composite floor system according to claim 2, wherein: the cold-bending thin-wall C-shaped side beam (7) is a C-shaped steel beam, and a web plate of the cold-bending thin-wall C-shaped side beam is provided with a plurality of bolt holes.
8. The cold-formed thin-walled steel composite floor system according to claim 2, wherein: the connecting beam (15) comprises two cold-bending thin-wall C-shaped steel beams (12), a profiled steel plate (13), a light concrete filling layer (14), a vertical connecting bolt (16) and a horizontal connecting bolt (17), webs of the two cold-bending thin-wall C-shaped steel beams (12) are fixedly arranged back to back through the profiled steel plate (3), and a cavity formed by the webs of the two cold-bending thin-wall C-shaped steel beams (12) and the profiled steel plate (3) is filled with light concrete (14); the vertical connecting bolt (16) is vertically arranged in the light concrete filling layer (14) of the profiled steel sheet (13); the horizontal connecting bolts (17) penetrate through the web plate of the super-cooled thin-wall C-shaped steel beam (12) and the profiled steel sheet (13) and are embedded in the lightweight concrete filling layer (14).
9. The assembling method of the cold-formed thin-wall section steel composite floor is characterized by comprising the following steps of:
s1, mounting a connecting beam (15) of the cold-bending thin-wall steel skeleton (1), a cold-bending thin-wall C-shaped side beam (7) and a longitudinal I-shaped rib beam (81):
temporarily fixing two connecting beams (15) according to the longitudinal length of the cold-formed thin-wall section steel composite floor system, embedding a longitudinal I-shaped rib beam (81) into a cold-formed thin-wall C-shaped steel beam (12) of the connecting beams (15), and fixedly connecting the end part of the longitudinal I-shaped rib beam (81) with the cold-formed thin-wall C-shaped steel beam (12) of one connecting beam (15) by adopting a right-angle stiffening piece (9) and a self-tapping screw (11); after all the longitudinal I-shaped rib beams (81) are installed, the end parts of the cold-formed thin-wall C-shaped side beams (7) are embedded into the cold-formed thin-wall C-shaped steel beams (12) of the connecting beams (15) and are fixedly connected through self-tapping screws (11);
s2, mounting the autoclaved aerated concrete slab (2) and the transverse I-shaped rib beam (82):
removing the connecting beam (15) which is not fixedly connected with the end parts of the longitudinal I-shaped rib beams (81) in the step S1, embedding the first row of autoclaved aerated concrete slabs (2) into the upper parts of the lower flanges of the two adjacent longitudinal I-shaped rib beams (81), and fixedly connecting the first row of autoclaved aerated concrete slabs with the lower flanges of the longitudinal I-shaped rib beams (81) through self-tapping screws (11); a first transverse I-shaped rib beam (82) penetrates through a longitudinal I-shaped rib beam (81), the end part of the first transverse I-shaped rib beam (82) is embedded into a cold-formed thin-wall C-shaped boundary beam (7), and the first transverse I-shaped rib beam and the cold-formed thin-wall C-shaped boundary beam are fixedly connected through a self-tapping screw (11);
s3, repeating the step S2, and sequentially installing the subsequent autoclaved aerated concrete slab (2) and the transverse I-shaped rib beam (82); mounting the connecting beam (15) removed in the step S2 at the end part of the longitudinal I-shaped rib beam (81), namely embedding the end part of the longitudinal I-shaped rib beam (81) into the cold-formed thin-walled C-shaped steel beam (12) of the connecting beam (15) and fixedly connecting the connecting beam through a right-angle stiffener (9) and a self-tapping screw (11); embedding the end part of the cold-formed thin-wall C-shaped edge beam (7) into the cold-formed thin-wall C-shaped steel beam (12) of the connecting beam (15) and fixedly connecting the end part of the cold-formed thin-wall C-shaped edge beam through a self-tapping screw (11);
s4, mounting the steel pull belt (10):
arranging a steel drawstring (10) at the lower part of a longitudinal I-shaped rib beam (81), and fixedly connecting the lower flange of the longitudinal I-shaped rib beam (81) with the steel drawstring (10) by adopting a self-tapping screw (11);
s5, installing a reinforcing mesh (3), pouring light concrete (4) and paving a finishing layer (5):
fully paving the reinforcing mesh (3) and the upper part of the autoclaved aerated concrete slab (2), and pouring light concrete in the cavities of the upper part of the autoclaved aerated concrete slab (2), the longitudinal I-shaped rib beam (81), the transverse I-shaped rib beam (82) and the connecting beam (15) to form a steel floor system; and paving a finishing layer (5).
10. A modular prefabrication and assembly method of a cold-formed thin-wall steel composite floor is characterized by comprising the following steps: firstly, prefabricating the cold-formed thin-walled steel composite floor system in batches in a factory according to the steps S1 to S5 of claim 9, wherein in the steps S2 to S3, an autoclaved aerated concrete slab (2) is not arranged between the cold-formed thin-walled C-shaped side beam (7) and the adjacent longitudinal I-shaped rib beam (81) to reserve a post-assembling position between the adjacent floor systems; then, mounting the prefabricated cold-formed thin-walled steel composite floor above the lower-layer wall body (18), and enabling the lower part of a vertical connecting bolt (16) in the connecting beam (15) to penetrate through a top guide rail (19) of the lower-layer wall body (18) and be fixedly connected with the same; when the cold-bending thin-wall steel composite floor system is arranged on the same floor, the rear assembling position of the cold-bending thin-wall steel composite floor system is arranged on one side of the connecting beam (15) of the adjacent floor system, the cold-bending thin-wall C-shaped side beam (7) at the rear assembling position is embedded into the cold-bending thin-wall C-shaped steel beam (12) of the connecting beam (15) of the adjacent floor system, and the horizontal connecting bolt (17) penetrates through the preformed hole (6) of the web plate of the cold-bending thin-wall C-shaped side beam (7) and is screwed to complete the fixed connection between the adjacent floor systems; sequentially laying an autoclaved aerated concrete slab (2) and a reinforcing mesh (3) at a reserved rear assembly position between the cold-formed thin-wall C-shaped side beam (7) and the adjacent longitudinal I-shaped rib beam (81), pouring light concrete, laying a surface layer and finishing the installation of the whole floor; and (3) enabling the upper part of the vertical connecting bolt (16) to penetrate through a top guide rail (21) of the upper-layer wall body (20) and be fixedly connected, and continuing to install the upper-layer floor.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111926997A (en) * | 2020-10-16 | 2020-11-13 | 湖南大学 | Prestressed composite building component and prestressed composite floor slab thereof |
| CN112360028A (en) * | 2020-11-18 | 2021-02-12 | 天津大学建筑设计规划研究总院有限公司 | Steel grating support-free superposed dense rib plate |
| CN112832414A (en) * | 2020-12-31 | 2021-05-25 | 江苏科技大学 | Cold-formed thin-wall section steel embedded block combined shear wall and installation method |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL1025942C2 (en) * | 2004-04-14 | 2005-10-17 | Ingbureaugruenbauer B V | Concrete floor construction method, uses reinforcing bars with wedges for inserting into cavities in ends of top hat Q beams |
| CN202208984U (en) * | 2011-08-09 | 2012-05-02 | 宁波大学 | Lightweight composite floor system |
| CN103243847A (en) * | 2013-05-17 | 2013-08-14 | 东南大学 | Prefabricating assembling type cold molding steel floor system and construction method thereof |
| CN103276848A (en) * | 2013-06-09 | 2013-09-04 | 中冶建筑研究总院有限公司 | Open-web flat beam, as well as steel concrete flitch beam and construction method thereof |
| CN107476482A (en) * | 2017-07-10 | 2017-12-15 | 昆明理工大学 | A kind of prefabricated panel with light gauge cold-formed steel shape rib, superimposed sheet and preparation method thereof |
| CN207597608U (en) * | 2017-12-14 | 2018-07-10 | 西安建筑科技大学 | H profile steel column-back-to-back crimping C-shaped section light gauge cold-formed steel shape beam assembly node |
| CN108468401A (en) * | 2018-03-20 | 2018-08-31 | 昆明理工大学 | A kind of prefabricated band is put more energy into the concrete floor of light gauge cold-formed steel shape rib and its superimposed sheet of making |
| CN108867963A (en) * | 2018-08-30 | 2018-11-23 | 河北建筑工程学院 | A kind of light gauge cold-formed steel shape well word floor construction and construction method |
| CN109339321A (en) * | 2018-10-10 | 2019-02-15 | 河北水利电力学院 | A kind of damping standard prefabricated well format floor construction system convenient for construction |
| CN209397804U (en) * | 2018-12-25 | 2019-09-17 | 罗强军 | A kind of assembled steel frame-composite slim floor |
| EP2430252B1 (en) * | 2009-05-19 | 2019-12-04 | Roger C. Roen | Structurally integrated accessible floor system |
-
2020
- 2020-05-22 CN CN202010439773.5A patent/CN111622403B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL1025942C2 (en) * | 2004-04-14 | 2005-10-17 | Ingbureaugruenbauer B V | Concrete floor construction method, uses reinforcing bars with wedges for inserting into cavities in ends of top hat Q beams |
| EP2430252B1 (en) * | 2009-05-19 | 2019-12-04 | Roger C. Roen | Structurally integrated accessible floor system |
| CN202208984U (en) * | 2011-08-09 | 2012-05-02 | 宁波大学 | Lightweight composite floor system |
| CN103243847A (en) * | 2013-05-17 | 2013-08-14 | 东南大学 | Prefabricating assembling type cold molding steel floor system and construction method thereof |
| CN103276848A (en) * | 2013-06-09 | 2013-09-04 | 中冶建筑研究总院有限公司 | Open-web flat beam, as well as steel concrete flitch beam and construction method thereof |
| CN107476482A (en) * | 2017-07-10 | 2017-12-15 | 昆明理工大学 | A kind of prefabricated panel with light gauge cold-formed steel shape rib, superimposed sheet and preparation method thereof |
| CN207597608U (en) * | 2017-12-14 | 2018-07-10 | 西安建筑科技大学 | H profile steel column-back-to-back crimping C-shaped section light gauge cold-formed steel shape beam assembly node |
| CN108468401A (en) * | 2018-03-20 | 2018-08-31 | 昆明理工大学 | A kind of prefabricated band is put more energy into the concrete floor of light gauge cold-formed steel shape rib and its superimposed sheet of making |
| CN108867963A (en) * | 2018-08-30 | 2018-11-23 | 河北建筑工程学院 | A kind of light gauge cold-formed steel shape well word floor construction and construction method |
| CN109339321A (en) * | 2018-10-10 | 2019-02-15 | 河北水利电力学院 | A kind of damping standard prefabricated well format floor construction system convenient for construction |
| CN209397804U (en) * | 2018-12-25 | 2019-09-17 | 罗强军 | A kind of assembled steel frame-composite slim floor |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111926997A (en) * | 2020-10-16 | 2020-11-13 | 湖南大学 | Prestressed composite building component and prestressed composite floor slab thereof |
| CN111926997B (en) * | 2020-10-16 | 2021-03-02 | 湖南大学 | Prestressed composite building component and prestressed composite floor slab thereof |
| CN112360028A (en) * | 2020-11-18 | 2021-02-12 | 天津大学建筑设计规划研究总院有限公司 | Steel grating support-free superposed dense rib plate |
| CN112832414A (en) * | 2020-12-31 | 2021-05-25 | 江苏科技大学 | Cold-formed thin-wall section steel embedded block combined shear wall and installation method |
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|---|---|
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