CN103243847A - Prefabricating assembling type cold molding steel floor system and construction method thereof - Google Patents
Prefabricating assembling type cold molding steel floor system and construction method thereof Download PDFInfo
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- CN103243847A CN103243847A CN2013101865502A CN201310186550A CN103243847A CN 103243847 A CN103243847 A CN 103243847A CN 2013101865502 A CN2013101865502 A CN 2013101865502A CN 201310186550 A CN201310186550 A CN 201310186550A CN 103243847 A CN103243847 A CN 103243847A
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Abstract
The invention discloses a prefabricating assembling type cold molding steel floor system which comprises a keel unit, a rectangular concrete filled steel tube straining beam, a light concrete plate, steel bars with equal length, a heat insulation material layer, lower-layer wall bodies and upper-layer wall bodies. The rectangular concrete filled steel tube straining beam is located between the lower-layer wall bodies and the upper-layer wall bodies and respectively fixedly connected with the lower-layer wall bodies and the upper-layer wall bodies. Two ends of the keel unit are located above the two adjacent low-layer wall bodies, and the keel unit is fixedly connected with the rectangular concrete filled steel tube straining beam. The light concrete plate is located above the keel unit and fixedly connected with the keel unit. The steel bars with equal length penetrate through bar penetration holes on the rectangular concrete filled steel tube straining beam to be located in a plate gap of the light concrete plate. The heat insulation material layer is filled in the keel unit. The steel floor system has the good performance of being explicit and reasonable in stress and force transfer. A construction method of the steel floor system is further disclosed. The system and the method have the advantages of being simple in work procedure and high in speed.
Description
Technical field
The present invention relates to multilayer cold formed steel residential structure, specifically, relate to a kind of prefabricated assembled cold formed steel superstructure and job practices thereof.
Background technology
At present in the cold formed steel structural system, superstructure commonly used mainly comprises three kinds of light steel wood floor, profiled steel sheet combination floor and cast-in-situ concrete composite floor plates both at home and abroad.Light steel wood floor refers to lay plank on the steel joist, establishes very thin cushion on the plank, can be at cushion upper berth surface layer, repave carpet etc.This kind floor is mainly used in plate and strides less situation, has from heavy and light, and the characteristics that speed of application is fast, but its rigidity is little, the anti-effect of quivering is relatively poor.Profiled steel sheet combination floor refers to corrugated sheet is fixed on the steel joist of periphery the top-pour light weight concrete construction.That external this profiled steel sheet combination floor is mainly used in is many, in the highrise building, seldom use because cost is high in low story dwelling.Cast-in-situ concrete composite floor plate and Bo Sige floor system are similar, refer to force transmitting board is connected with the steel joist, the thick cast in place concrete plate of top-pour 50mm to be forming superimposed sheet, the cracking resistance reinforcing bar of configuration some in the cast-in-situ concrete, this kind floor rigidity is big, impact resistance, anti-quiver effective, easily be combined with other materials, and saved profiled sheet, reduce the floor cost, but it has been from great, installation rate is slow, and can not construct under bad weather.Japan adopts autoclaved lightweight aerated concrete (ALC) floor, namely at the thick ALC light weight concrete construction of steel joist upper berth 100mm, repaves wooden splint, carpet and wood flooring.This floor can alleviate the deadweight of structure greatly, has function of use preferably simultaneously, but this kind floor is mainly used in the floor slab structure of low-rise steel residential structure.
Summary of the invention
Technical problem:Technical problem to be solved by this invention is: a kind of prefabricated assembled cold formed steel superstructure is provided, what this steel superstructure overcame existing cold formed steel superstructure can't satisfy simultaneously that deadweight is little, installation rate is fast, cost is low, the deficiency of the big characteristic of rigidity, has the clear and definite rational premium properties of stressed power transmission; Simultaneously, also provide the job practices of this steel superstructure, this job practices has that operation is simple, speed is fast, the advantage of good integrity, is conducive to realize building energy conservation, is convenient to suitability for industrialized production and mechanized construction.
Technical scheme:For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of prefabricated assembled cold formed steel superstructure, this steel superstructure comprises the keel unit, the concrete-filled rectangular steel tube straining beam, lightweight concrete slab, elongated reinforcing bar, the heat preserving and insulating material layer, lower floor's body of wall and upper strata body of wall, the upper walls body is positioned at lower floor body of wall top, and the upper strata body of wall is relative with the lower floor body of wall, the concrete-filled rectangular steel tube straining beam is between lower floor's body of wall and upper strata body of wall, and the concrete-filled rectangular steel tube straining beam is fixedlyed connected with the upper strata body of wall with the lower floor body of wall respectively, the two ends of keel unit are positioned at two adjacent lower floor body of wall tops, and fixedly connected with the concrete-filled rectangular steel tube straining beam in the keel unit; Lightweight concrete slab is positioned at top, keel unit, and lightweight concrete slab is fixedlyed connected with the keel unit, forms the plate seam between the lightweight concrete slab; Elongated reinforcing bar passes wears the muscle hole on the concrete-filled rectangular steel tube straining beam, is arranged in the plate seam of lightweight concrete slab; The heat preserving and insulating material layer is filled in the keel unit.
Further, described prefabricated assembled cold formed steel superstructure also comprises floor waterproofing course and floor finish coat, and the floor waterproofing course is fixed on the lightweight concrete slab top, and the floor finish coat is fixed on floor waterproofing course top.
Further, described prefabricated assembled cold formed steel superstructure also comprises fire-resistant gypsum panel and ceiling decoration layer, and fire-resistant gypsum panel is fixed on the below of keel unit, and the ceiling decoration layer is fixed on the below of fire-resistant gypsum panel.
Further, described keel unit comprises first side bar, second side bar, three side bar relative with first side bar, four side bar relative with second side bar, the band steel band, first side bar, second side bar, the 3rd side bar and the 4th side bar connect into rectangle frame, first side bar and the 3rd side bar are C type cross section steel joist, second side bar and the 4th side bar are U-shaped cross section joist guide rail, between first side bar and the 3rd side bar, be provided with the central sill that be C type cross section parallel with first side bar, the two ends of first side bar, the two ends of the 3rd side bar and the two ends of central sill are embedded to respectively in second side bar and the 4th side bar, and the two ends of first side bar, fixedly connected with the 4th side bar with second side bar respectively with the two ends of central sill in the two ends of the 3rd side bar, the band steel band is arranged on the bottom flange of central sill, and the band steel band is parallel with second side bar, the band steel band respectively with central sill, first side bar is fixedlyed connected with the 3rd side bar.
Further, be provided with the hole in the described keel unit.
The job practices of above-mentioned prefabricated assembled cold formed steel superstructure, this job practices may further comprise the steps:
The first step: the concrete-filled rectangular steel tube straining beam is installed: the concrete-filled rectangular steel tube straining beam is placed on the wall skeleton top of lower floor's body of wall, and the concrete-filled rectangular steel tube straining beam is fixed on the wall skeleton of lower floor's body of wall with vertical screw rod;
Second step: wallboard is installed: wallboard is stood on the wall skeleton of lower floor's body of wall, utilize Electric portable drill to squeeze into tapping screw, wallboard and wall skeleton are coupled together;
The 3rd step: the keel unit is installed: the keel unit is placed on the wall skeleton top of two adjacent lower floor's bodies of wall, fixedlys connected by horizontal screw bolt with the concrete-filled rectangular steel tube straining beam in the end of keel unit;
The 4th step: lightweight concrete slab is installed: above the keel unit, lay prefabricated lightweight concrete slab; The middle part of lightweight concrete slab is provided with bolt hole, form the plate seam between the adjacent lightweight concrete slab, bolt hole and plate at lightweight concrete slab are sewed on the hold-down hook hook bolt, and gib headed bolt passes the C type cross section steel joist of keel unit and tightens, and lightweight concrete slab is fixedlyed connected with the keel unit;
The 5th step: the heat preserving and insulating material layer is installed: be embedded in the heat preserving and insulating material layer in the keel unit; After embedding the heat preserving and insulating material layer, fire-resistant gypsum panel is installed, fire-resistant gypsum panel is arranged on the bottom of keel unit, and connect fire-resistant gypsum panel and keel unit with tapping screw;
The 6th step: the wall skeleton that the upper strata body of wall is installed: the wall skeleton of upper strata body of wall is placed the lightweight concrete slab top, and with vertical screw rod and gib headed bolt fixedly wall skeleton and the lightweight concrete slab of upper strata body of wall;
The 7th step: elongated reinforcing bar is installed: wear muscle hole 11 with what elongated reinforcing bar passed concrete-filled rectangular steel tube straining beam 8, the two ends of elongated reinforcing bar are fixed on the concrete-filled rectangular steel tube straining beam 8; Elongated reinforcing bar is arranged in lightweight concrete slab the plate seam that the back forms is installed.
The 8th step: exterior wall side bar 21 is installed: elongated reinforcing bar 14 is rolled into screw thread near exterior wall one end, elongated reinforcing bar 14 passes the U-shaped cross section joist guide rail in the keel unit, and tighten, be incubated processing with filling out the heat preserving and insulating material layer in the steel joist of C type cross section, to embed in the joist guide rail of U-shaped cross section through the C type cross section steel joist that insulation is handled, and be connected to form obvolvent exterior wall side bar 21 by tapping screw;
The 9th step: after water plate seam 15 and grouting: after water high-strength mortar and irritate and wear muscle hole 11 and plate seam 15, the bolt hole that lightweight concrete slab 12 middle parts are reserved carries out grouting treatment, forms the steel superstructure.
Further, the job practices of described prefabricated assembled cold formed steel superstructure, also comprised for the tenth step: the ceiling finish coat is set: the ceiling finish coat is arranged on the bottom surface of fire-resistant gypsum panel, and connects fire-resistant gypsum panel, ceiling finish coat and keel unit with tapping screw;
Further, the job practices of described prefabricated assembled cold formed steel superstructure, also comprised for the 11 step: flooring waterproofing course and flooring finish coat are set, the flooring waterproofing course is arranged on the lightweight concrete slab top, again the flooring finish coat is arranged on flooring waterproofing course top.
Beneficial effect:Compared with prior art, steel superstructure of the present invention has the clear and definite reasonably premium properties of stressed power transmission; Simultaneously, this job practices has that operation is simple, speed is fast, the advantage of good integrity, is conducive to realize building energy conservation, is convenient to suitability for industrialized production and mechanized construction.Assembly working is only carried out in the production that all is prefabricated in the factory of composition members such as the keel unit in the prefabricated assembled cold formed steel superstructure of the present invention, concrete-filled rectangular steel tube straining beam, lightweight concrete slab at the scene, and operation is simple, and speed of application is fast.Adopt prefabricated lightweight concrete slab, saved profiled sheet, reduce cost, the wet trade amount is few, and has kept the advantage of cast-in-place light concrete composite floor system from heavy and light.The plate seam place of prefabricated lightweight concrete slab arranges elongated reinforcing bar and passes the concrete-filled rectangular steel tube straining beam, adjacent floor is linked to be integral body, and the butt joint place carries out the cementation of fissures and handles, guaranteed the globality of prefabricated assembled cold formed steel superstructure, made that this prefabricated assembled cold formed steel superstructure can be applicable to multilayer cold forming steel house.Assembling cold formed steel superstructure of the present invention can improve speed of application and the globality of cold formed steel residential structure.Prefabricated assembled cold formed steel superstructure has effectively been accelerated speed of application, has reduced cost, has guaranteed globality and the rigidity of building, can be applicable to multilayer cold forming steel house.
Description of drawings
Fig. 1 is the structural representation of steel superstructure of the present invention.
Fig. 2 is the structure sectional view that steel superstructure of the present invention is connected with interior wall.
Fig. 3 is the structure sectional view that steel superstructure of the present invention is connected with exterior wall.
Fig. 4 is the structure sectional view of steel superstructure of the present invention.
Fig. 5 is the structure chart of keel unit among the present invention.
Fig. 6 is the structure chart that is provided with the keel unit at hole among the present invention.
Fig. 7 is the structure chart of C type cross section steel joist among the present invention.
Fig. 8 is the structure chart of U-shaped cross section joist guide rail among the present invention.
Fig. 9 is the reinforcement connection diagram of C type cross section steel joist and U-shaped cross section joist guide rail among the present invention.
Figure 10 is the structure of the window schematic diagram that the keel unit at hole is arranged among the present invention.
Figure 11 is the structure chart of concrete-filled rectangular steel tube straining beam among the present invention.
Figure 12 is the structure chart of lightweight concrete slab among the present invention.
Figure 13 is the structure chart of exterior wall side bar among the present invention.
Have among the figure: C type cross section steel joist 1, U-shaped cross section joist guide rail 2, band steel band 3, stiffener 4, hole side bar 5, hole lintel 6, right-angle connector 7, concrete-filled rectangular steel tube straining beam 8, horizontal screw bolt 9, vertical screw rod 10, wear muscle hole 11, lightweight concrete slab 12, gib headed bolt 13, elongated reinforcing bar 14, plate seam 15, floor waterproofing course 16, floor finish coat 17, heat preserving and insulating material layer 18, fire-resistant gypsum panel 19, ceiling decoration layer 20, exterior wall side bar 21, lower floor's body of wall 22, upper strata body of wall 23, wallboard 24.
The specific embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is further described.
As shown in figure 1 to figure 13, a kind of prefabricated assembled cold formed steel superstructure of the present invention comprises keel unit, concrete-filled rectangular steel tube straining beam 8, lightweight concrete slab 12, elongated reinforcing bar 14, heat preserving and insulating material layer 18, lower floor's body of wall 22 and upper strata body of wall 23.Upper strata body of wall 23 is positioned at lower floor's body of wall 22 tops, and upper strata body of wall 23 is relative with lower floor body of wall 22.Concrete-filled rectangular steel tube straining beam 8 is between lower floor's body of wall 22 and upper strata body of wall 23, and concrete-filled rectangular steel tube straining beam 8 is fixedlyed connected with upper strata body of wall 23 with lower floor body of wall 22 respectively.For example adopt vertical screw rod 10 to connect concrete-filled rectangular steel tube straining beam 8 and lower floor's body of wall 22 and upper strata body of wall 23.Vertically screw rod 10 passes concrete-filled rectangular steel tube straining beam 8, and two ends stretch out concrete-filled rectangular steel tube straining beam 8, and vertically the top of screw rod 10 is connected with the screw that body of wall 23 bottoms in upper strata are reserved, and the bottom of vertical screw rod 10 is connected with the screw of lower floor's body of wall 22 tops reservation.The two ends of keel unit are positioned at two adjacent lower floor's body of wall 22 tops.Concrete-filled rectangular steel tube straining beam 8 is between adjacent two keel unit.Can fixedly connected with concrete-filled rectangular steel tube straining beam 8 by horizontal screw bolt 9 in the keel unit.Lightweight concrete slab 12 is positioned at top, keel unit, and lightweight concrete slab 12 is fixedlyed connected with the keel unit.Form longitudinal seam after lightweight concrete slab 12 assembly units, this longitudinal seam is plate seam 15.Concrete-filled rectangular steel tube straining beam 8 is provided with wears muscle hole 11, wears muscle hole 11 and plate and stitches 15 relative.Elongated reinforcing bar 14 passes wears muscle hole 11 on the concrete-filled rectangular steel tube straining beam 8, is located in the plate seam 15 of lightweight concrete slab 12.Elongated reinforcing bar 14 refers to that plain bars stitches 15 elongated settings along plate, and continuous two stride or the reinforcing bar of multispan floor does not block, thereby plays the drawknot effect.Heat preserving and insulating material layer 18 is filled in the keel unit.Heat preserving and insulating material layer 18 is preferably made by glass wool.
Stride or the multispan floor for continuous two, elongated reinforcing bar 14 two ends link to each other with the Rectangular Concrete straining beam 8 of end bay floor, and method of attachment is that elongated reinforcing bar 14 ends are shut out screw thread, pass the muscle hole 11 usefulness nuts of reserving on the Rectangular Concrete straining beam 8 of wearing and tighten; And the elongated reinforcing bar 14 that is arranged in span does not block, pass on the Rectangular Concrete straining beam 8 reserve wear muscle hole 11 after, by playing the effect that is connected with Rectangular Concrete straining beam 8 to wearing 11 grouting of muscle hole.For single floor, elongated reinforcing bar 14 is connected with the Rectangular Concrete straining beam 8 at floor two ends, and method of attachment all is that elongated reinforcing bar 14 ends are shut out screw thread, passes the muscle hole 11 usefulness nuts of reserving on the Rectangular Concrete straining beam 8 of wearing and tightens.
Further, described prefabricated assembled cold formed steel superstructure also comprises floor waterproofing course 16 and floor finish coat 17, and floor waterproofing course 16 is fixed on lightweight concrete slab 12 tops, and floor finish coat 17 is fixed on floor waterproofing course 16 tops.Floor waterproofing course 16 is set plays waterproof action.Floor finish coat 17 is set plays decoration function.
Further, described prefabricated assembled cold formed steel superstructure also comprises fire-resistant gypsum panel 19 and ceiling decoration layer 20, and fire-resistant gypsum panel 19 is fixed on the below of keel unit, and ceiling decoration layer 20 is fixed on the below of fire-resistant gypsum panel 19.It is in order to guarantee that floor has fire-proof function, ceiling decoration layer 20 to be set for attractive in appearance, playing decoration function that fire-resistant gypsum panel 19 is set.
Further, described keel unit comprises first side bar, second side bar, three side bar relative with first side bar, four side bar, the band steel band 3 relative with second side bar.First side bar, second side bar, the 3rd side bar and the 4th side bar connect into rectangle frame.First side bar is parallel with the 3rd side bar, and second side bar is parallel with the 4th side bar.First side bar and the 3rd side bar are C type cross section steel joist 1, second side bar and the 4th side bar and are U-shaped cross section joist guide rail 2.Between first side bar and the 3rd side bar, be provided with the central sill that be C type cross section parallel with first side bar.As preferably, the distance between adjacent two central sills is 400mm to 600mm.The two ends of the two ends of first side bar, the 3rd side bar and the two ends of central sill are embedded to respectively in second side bar and the 4th side bar, and fixedly connected with the 4th side bar with second side bar respectively in the two ends of first side bar, the two ends of the 3rd side bar and the two ends of central sill.Band steel band 3 is arranged on the bottom flange of central sill, and band steel band 3 is parallel with second side bar, and band steel band 3 is fixedlyed connected with central sill, first side bar and the 3rd side bar respectively.When prefabricated, C type cross section steel joist 1 and U-shaped cross section joist guide rail 2 are connected by the tapping screw connector, and band steel band 3 and C type cross section steel joist 1 are connected by the tapping screw connector.For the fixing of strengthening connecting, also be provided with stiffener 4.As shown in Figure 9, the connected mode of stiffener 4 is: the web of stiffener 4 is adjacent to the web of steel joist 1 end, C type cross section and is connected by the tapping screw connector, and the edge of a wing of stiffener 4 is adjacent to the web of U-shaped cross section joist guide rail 2 and is connected by the tapping screw connector.Adopt in the same way, stiffener 4 can strengthen fixing second side bar and the 3rd side bar, and the 4th side bar respectively with first side bar and the 3rd side bar, central sill respectively with second side bar and the 4th side bar.
Further, be provided with the hole in the described keel unit.It is for stair are set that the hole is set.The hole comprises hole side bar 5 and hole lintel 6.Hole side bar 5 and hole lintel 6 all adopt the form of U-shaped keel and the obvolvent of C type keel.The method of obvolvent is: in the U-shaped keel of the parallel embedding of C type keel, and utilize tapping screw to connect the edge of a wing of U-shaped keel and C type keel.Adopt right-angle connector 7 to connect between hole side bar 5 and the hole lintel 6.The both sides of right-angle connector 7 are connected with hole lintel 6 with hole side bar 5 by tapping screw respectively.The structure of other keel cell mesh except the hole is identical with the keel unit of the mouth that do not punch.
In the cold formed steel superstructure of said structure, concrete-filled rectangular steel tube straining beam 8 is drawknot members of adjacent floor and levels body of wall.Muscle hole 11 is worn in pre-buried horizontal screw bolt 9, vertical screw rod 10 and reservation in concrete-filled rectangular steel tube straining beam 8.Vertically screw rod 10 is with after lower floor body of wall 22 is connected, and horizontal screw bolt 9 passes the bolt hole of U-shaped cross section joist guide rail 2 reservations of adjacent floor keel unit, and adjacent floor is linked to be integral body.Lay prefabricated lightweight concrete slab 12 in the keel unit, elongated reinforcing bar 14 passed to reserve wear muscle hole 11 and be arranged on plate and stitch 15 positions, gib headed bolt 13 passes the bolt hole that C type cross section steel joist 1 that plate stitches 15 places is reserved, after water high-strength mortar and irritate and wear muscle hole 11 and plate seam 15.Gib headed bolt 13 passes the bolt hole that lightweight concrete slab 12 bolt hole of reserving and the C type cross section steel joist 1 that is positioned at lightweight concrete slab 12 middle parts are reserved, and high-strength mortar is irritated in the back.
Independently stride elongated reinforcing bar 14 nothings of floor and block, the end is rolled into screw thread, fixedlys connected with concrete-filled rectangular steel tube straining beam 8.The elongated reinforcing bar of continuous span floor can arrange joint at non-span centre position, and bar splice can adopt sleeve to connect.The elongated reinforcing bar 14 of end bay floor is rolled into screw thread near exterior wall one end, and the U-shaped cross section guide rail prepared screw-bolt hole that passes exterior wall side bar 21 links to each other with exterior wall side bar 21.
The job practices of above-mentioned prefabricated assembled cold formed steel superstructure may further comprise the steps:
The first step: concrete-filled rectangular steel tube straining beam 8 is installed: concrete-filled rectangular steel tube straining beam 8 is placed on the wall skeleton top of lower floor's body of wall 22, and concrete-filled rectangular steel tube straining beam 8 is fixed on the wall skeleton of lower floor's body of wall 22 with vertical screw rod 10;
Second step: wallboard 24 is installed: wallboard 24 is stood on the wall skeleton of lower floor's body of wall 22, utilize Electric portable drill to squeeze into tapping screw, wallboard 24 and wall skeleton are coupled together;
The 3rd step: the keel unit is installed: the keel unit is placed on the wall skeleton top of two adjacent lower floor's bodies of wall 22, fixedlys connected by horizontal screw bolt 9 with concrete-filled rectangular steel tube straining beam 8 in the end of keel unit;
The 4th step: lightweight concrete slab 12 is installed: above the keel unit, lay prefabricated lightweight concrete slab 12; The middle part of lightweight concrete slab 12 is provided with bolt hole, form plate seam 15 between the adjacent lightweight concrete slab 12, bolt hole and plate at lightweight concrete slab 12 stitch hold-down hook hook bolt 13 on 15, gib headed bolt 13 passes the C type cross section steel joist 1 of keel unit and tightens, and lightweight concrete slab 12 is fixedlyed connected with the keel unit;
The 5th step: heat preserving and insulating material layer 18 is installed: be embedded in heat preserving and insulating material layer 18 in the keel unit; After embedding heat preserving and insulating material layer 18, fire-resistant gypsum panel 19 is installed, fire-resistant gypsum panel 19 is arranged on the bottom of keel unit, and connect fire-resistant gypsum panel 19 and keel unit with tapping screw;
The 6th step: the wall skeleton that upper strata body of wall 23 is installed: the wall skeleton of upper strata body of wall 23 is placed lightweight concrete slab 12 tops, and with vertical screw rod 10 and gib headed bolt 13 fixedly wall skeleton and the lightweight concrete slab 12 of upper strata body of wall 23;
The 7th step: elongated reinforcing bar 14 is installed: wear muscle hole 11 with what elongated reinforcing bar 14 passed concrete-filled rectangular steel tube straining beam 8, the two ends of elongated reinforcing bar 14 are fixed on the concrete-filled rectangular steel tube straining beam 8; Elongated reinforcing bar 14 is arranged in lightweight concrete slab 12 the plate seam 15 that the back forms is installed;
The 8th step: exterior wall side bar 21 is installed: elongated reinforcing bar 14 is rolled into screw thread near exterior wall one end, elongated reinforcing bar 14 passes the U-shaped cross section joist guide rail 2 in the keel unit, and tighten, be incubated processing with filling out heat preserving and insulating material layer 18 in the steel joist of C type cross section, to embed in the U-shaped cross section joist guide rail 2 through the C type cross section steel joist that insulation is handled, and be connected to form obvolvent exterior wall side bar 21 by tapping screw;
The 9th step: after water plate seam 15 and grouting: after water high-strength mortar and irritate and wear muscle hole 11 and plate seam 15, the bolt hole that lightweight concrete slab 12 middle parts are reserved carries out grouting treatment, forms the steel superstructure.
Further, the job practices of described prefabricated assembled cold formed steel superstructure, also comprised for the tenth step: ceiling finish coat 20 is set: ceiling finish coat 20 is arranged on the bottom surface of fire-resistant gypsum panel 19, and connects fire-resistant gypsum panel 19, ceiling finish coat 20 and keel unit with tapping screw.
Further, the job practices of described prefabricated assembled cold formed steel superstructure, also comprised for the 11 step: flooring waterproofing course 16 and flooring finish coat 17 are set, flooring waterproofing course 16 is arranged on lightweight concrete slab 12 tops, again flooring finish coat 17 is arranged on flooring waterproofing course 16 tops.
In the prefabricated assembled cold formed steel superstructure of the present invention, the various composition members of this superstructure are comprised that steel joist, joist guide rail, concrete-filled rectangular steel tube straining beam, lightweight concrete slab etc. carry out prefabricated production in factory, various prefabricated composition members are connected with bolt by the screw connection at the construction field (site) carry out assembly unit then.In the case, the wet trade amount of superstructure significantly reduces, and speed of application increases substantially.Adopt lightweight concrete slab 12, kept the advantage of cast-in-place light concrete composite floor system from heavy and light, save profiled sheet, reduced construction costs.Concrete-filled rectangular steel tube straining beam 8 pre embedded bolts are linked to be integral body with adjacent floor and levels body of wall, the plate of lightweight concrete slab 12 stitches 15 places and elongated reinforcing bar 14 is set runs through concrete-filled rectangular steel tube straining beam 8, the back high-strength mortar cementation of fissures, further improve the overall performance of superstructure, can be applicable to multilayer cold formed steel residential structure.Assembling cold formed steel superstructure of the present invention is intended to improve speed of application and the globality of cold formed steel residential structure.Prefabricated assembled cold formed steel superstructure has effectively been accelerated speed of application, has reduced cost, has guaranteed globality and the rigidity of building, can be applicable to multilayer cold forming steel house.
Claims (9)
1. prefabricated assembled cold formed steel superstructure, it is characterized in that, this steel superstructure comprises the keel unit, concrete-filled rectangular steel tube straining beam (8), lightweight concrete slab (12), elongated reinforcing bar (14), heat preserving and insulating material layer (18), lower floor's body of wall (22) and upper strata body of wall (23), upper strata body of wall (23) is positioned at lower floor's body of wall (22) top, and upper strata body of wall (23) is relative with lower floor's body of wall (22), concrete-filled rectangular steel tube straining beam (8) is positioned between lower floor's body of wall (22) and the upper strata body of wall (23), and concrete-filled rectangular steel tube straining beam (8) is fixedlyed connected with upper strata body of wall (23) with lower floor's body of wall (22) respectively, the two ends of keel unit are positioned at adjacent two lower floor's bodies of wall (22) top, and fixedly connected with concrete-filled rectangular steel tube straining beam (8) in the keel unit; Lightweight concrete slab (12) is positioned at top, keel unit, and lightweight concrete slab (12) is fixedlyed connected with the keel unit, forms plate seam (15) between the lightweight concrete slab (12); Elongated reinforcing bar (14) passes wears muscle hole (11) on the concrete-filled rectangular steel tube straining beam (8), is arranged in the plate seam (15) of lightweight concrete slab (12); Heat preserving and insulating material layer (18) is filled in the keel unit.
2. according to the described prefabricated assembled cold formed steel superstructure of claim 1, it is characterized in that, also comprise floor waterproofing course (16) and floor finish coat (17), floor waterproofing course (16) is fixed on lightweight concrete slab (12) top, and floor finish coat (17) is fixed on floor waterproofing course (16) top.
3. according to the described prefabricated assembled cold formed steel superstructure of claim 1, it is characterized in that, also comprise fire-resistant gypsum panel (19) and ceiling decoration layer (20), fire-resistant gypsum panel (19) is fixed on the below of keel unit, and ceiling decoration layer (20) is fixed on the below of fire-resistant gypsum panel (19).
4. according to the described prefabricated assembled cold formed steel superstructure of claim 1, it is characterized in that, described keel unit comprises first side bar, second side bar, three side bar relative with first side bar, four side bar relative with second side bar, band steel band (3), first side bar, second side bar, the 3rd side bar and the 4th side bar connect into rectangle frame, first side bar and the 3rd side bar are C type cross section steel joist (1), second side bar and the 4th side bar are U-shaped cross section joist guide rail (2), between first side bar and the 3rd side bar, be provided with the central sill that be C type cross section parallel with first side bar, the two ends of first side bar, the two ends of the 3rd side bar and the two ends of central sill are embedded to respectively in second side bar and the 4th side bar, and the two ends of first side bar, fixedly connected with the 4th side bar with second side bar respectively with the two ends of central sill in the two ends of the 3rd side bar, band steel band (3) is arranged on the bottom flange of central sill, and band steel band (3) is parallel with second side bar, band steel band (3) respectively with central sill, first side bar is fixedlyed connected with the 3rd side bar.
5. according to the described prefabricated assembled cold formed steel superstructure of claim 4, it is characterized in that the distance between described adjacent two central sills is 400mm to 600mm.
6. according to the described prefabricated assembled cold formed steel superstructure of claim 4, it is characterized in that described keel are provided with the hole in the unit.
7. the job practices of the described prefabricated assembled cold formed steel superstructure of claim 1 is characterized in that, this job practices may further comprise the steps:
The first step: concrete-filled rectangular steel tube straining beam (8) is installed: concrete-filled rectangular steel tube straining beam (8) is placed on the wall skeleton top of lower floor's body of wall (22), and with vertical screw rod (10) concrete-filled rectangular steel tube straining beam (8) is fixed on the wall skeleton of lower floor's body of wall (22);
Second step: wallboard (24) is installed: wallboard (24) is stood on the wall skeleton of lower floor's body of wall (22), utilize Electric portable drill to squeeze into tapping screw, wallboard (24) and wall skeleton are coupled together;
The 3rd step: the keel unit is installed: the keel unit is placed on the wall skeleton top of adjacent two lower floor's bodies of wall (22), fixedlys connected by horizontal screw bolt (9) with concrete-filled rectangular steel tube straining beam (8) in the end of keel unit;
The 4th step: lightweight concrete slab (12) is installed: above the keel unit, lay prefabricated lightweight concrete slab (12); The middle part of lightweight concrete slab (12) is provided with bolt hole, form plate seam (15) between the adjacent lightweight concrete slab (12), bolt hole and plate seam (15) at lightweight concrete slab (12) are gone up hold-down hook hook bolt (13), gib headed bolt (13) passes the C type cross section steel joist (1) of keel unit and tightens, and lightweight concrete slab (12) is fixedlyed connected with the keel unit;
The 5th step: heat preserving and insulating material layer (18) is installed: be embedded in heat preserving and insulating material layer (18) in the keel unit; After embedding heat preserving and insulating material layer (18), fire-resistant gypsum panel (19) is installed, fire-resistant gypsum panel (19) is arranged on the bottom of keel unit, and connect fire-resistant gypsum panel (19) and keel unit with tapping screw;
The 6th step: the wall skeleton that upper strata body of wall (23) is installed: the wall skeleton of upper strata body of wall (23) is placed lightweight concrete slab (12) top, and with vertical screw rod (10) and gib headed bolt (13) fixedly wall skeleton and the lightweight concrete slab (12) of upper strata body of wall (23);
The 7th step: elongated reinforcing bar (14) is installed: wear muscle hole 11 with what elongated reinforcing bar (14) passed concrete-filled rectangular steel tube straining beam 8, the two ends of elongated reinforcing bar (14) are fixed on the concrete-filled rectangular steel tube straining beam 8; Elongated reinforcing bar (14) is arranged in lightweight concrete slab (12) the plate seam (15) that the back forms is installed;
The 8th step: exterior wall side bar 21 is installed: elongated reinforcing bar 14 is rolled into screw thread near exterior wall one end, elongated reinforcing bar 14 passes the U-shaped cross section joist guide rail (2) in the keel unit, and tighten, be incubated processing with filling out heat preserving and insulating material layer (18) in the steel joist of C type cross section, to embed in the U-shaped cross section joist guide rail (2) through the C type cross section steel joist that insulation is handled, and be connected to form obvolvent exterior wall side bar 21 by tapping screw;
The 9th step: after water plate seam 15 and grouting: after water high-strength mortar and irritate and wear muscle hole 11 and plate seam 15, the bolt hole that lightweight concrete slab 12 middle parts are reserved carries out grouting treatment, forms the steel superstructure.
8. according to the job practices of the described prefabricated assembled cold formed steel superstructure of claim 7, it is characterized in that, also comprised for the tenth step: ceiling finish coat (20) is set: ceiling finish coat (20) is arranged on the bottom surface of fire-resistant gypsum panel (19), and connects fire-resistant gypsum panel (19), ceiling finish coat (20) and keel unit with tapping screw.
9. according to the job practices of the described prefabricated assembled cold formed steel superstructure of claim 8, it is characterized in that, also comprised for the 11 step: flooring waterproofing course (16) and flooring finish coat (17) are set, flooring waterproofing course (16) is arranged on lightweight concrete slab (12) top, again flooring finish coat (17) is arranged on flooring waterproofing course (16) top.
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| CN201310186550.2A CN103243847B (en) | 2013-05-17 | 2013-05-17 | Prefabricating assembling type cold molding steel floor system and construction method thereof |
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| CN201310186550.2A CN103243847B (en) | 2013-05-17 | 2013-05-17 | Prefabricating assembling type cold molding steel floor system and construction method thereof |
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| CN103243847B CN103243847B (en) | 2015-03-04 |
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| CN104120828A (en) * | 2014-07-13 | 2014-10-29 | 张跃 | A joist |
| CN107386507A (en) * | 2017-07-24 | 2017-11-24 | 合肥国瑞集成建筑科技有限公司 | A kind of cold bending thin wall C-shaped beam and concrete slab assembled composite floor system |
| CN108005235A (en) * | 2017-12-19 | 2018-05-08 | 浙江绿筑集成科技有限公司 | A kind of connection method of two Span Continuous formula floor |
| CN109372170A (en) * | 2018-12-19 | 2019-02-22 | 武汉悉道建筑科技有限公司 | A kind of assembled sound insulating floor slab system and preparation method thereof |
| WO2019233363A1 (en) * | 2018-06-06 | 2019-12-12 | 北新集团建材股份有限公司 | Fabricated wall production platform and production method, and produced wall surface unit |
| CN111622403A (en) * | 2020-05-22 | 2020-09-04 | 江苏科技大学 | Cold-formed thin-wall section steel composite floor and modular prefabrication and assembly method thereof |
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| CN101509274A (en) * | 2009-03-25 | 2009-08-19 | 东南大学 | Residential structure of multi-layer cold-formed section steel assembled house |
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| JP2001020426A (en) * | 1999-07-07 | 2001-01-23 | Nihon Ytong Co Ltd | Mounting structure of floor panel |
| JP2006152557A (en) * | 2004-11-25 | 2006-06-15 | Nippon Steel Corp | Steel house structure and steel house construction method |
| WO2008055292A1 (en) * | 2006-11-06 | 2008-05-15 | Weeks Group Pty Ltd | A floor pier support |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104120828A (en) * | 2014-07-13 | 2014-10-29 | 张跃 | A joist |
| CN107386507A (en) * | 2017-07-24 | 2017-11-24 | 合肥国瑞集成建筑科技有限公司 | A kind of cold bending thin wall C-shaped beam and concrete slab assembled composite floor system |
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| WO2019233363A1 (en) * | 2018-06-06 | 2019-12-12 | 北新集团建材股份有限公司 | Fabricated wall production platform and production method, and produced wall surface unit |
| CN109372170A (en) * | 2018-12-19 | 2019-02-22 | 武汉悉道建筑科技有限公司 | A kind of assembled sound insulating floor slab system and preparation method thereof |
| CN109372170B (en) * | 2018-12-19 | 2024-02-23 | 武汉悉道建筑科技有限公司 | Assembled sound insulation floor system and manufacturing method thereof |
| CN111622403A (en) * | 2020-05-22 | 2020-09-04 | 江苏科技大学 | Cold-formed thin-wall section steel composite floor and modular prefabrication and assembly method thereof |
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|---|---|
| CN103243847B (en) | 2015-03-04 |
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