CN114250897A - Bidirectional ribbed cavity floor module for steel structure and construction method thereof - Google Patents
Bidirectional ribbed cavity floor module for steel structure and construction method thereof Download PDFInfo
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- CN114250897A CN114250897A CN202111660895.8A CN202111660895A CN114250897A CN 114250897 A CN114250897 A CN 114250897A CN 202111660895 A CN202111660895 A CN 202111660895A CN 114250897 A CN114250897 A CN 114250897A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- 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
- E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
- E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
- E04B5/36—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- 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
- E04B5/48—Special adaptations of floors for incorporating ducts, e.g. for heating or ventilating
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
- E04C5/02—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance
- E04C5/03—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance with indentations, projections, ribs, or the like, for augmenting the adherence to the concrete
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G15/00—Forms or shutterings for making openings, cavities, slits, or channels
- E04G15/06—Forms or shutterings for making openings, cavities, slits, or channels for cavities or channels in walls of floors, e.g. for making chimneys
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G15/00—Forms or shutterings for making openings, cavities, slits, or channels
- E04G15/06—Forms or shutterings for making openings, cavities, slits, or channels for cavities or channels in walls of floors, e.g. for making chimneys
- E04G15/063—Re-usable forms
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/12—Mounting of reinforcing inserts; Prestressing
- E04G21/122—Machines for joining reinforcing bars
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/24—Safety or protective measures preventing damage to building parts or finishing work during construction
- E04G21/246—Safety or protective measures preventing damage to building parts or finishing work during construction specially adapted for curing concrete in situ, e.g. by covering it with protective sheets
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
The invention discloses a bidirectional multi-ribbed cavity floor module for a steel structure and a construction method thereof, relating to the technical field of fabricated buildings, the bidirectional multi-ribbed cavity floor module for the steel structure consists of at least 2 parallel longitudinal section steel multi-ribbed beams, at least 2 parallel transverse section steel multi-ribbed beams, at least 1 reinforced concrete bottom plate, at least 1 reinforced concrete cover plate and at least 1 integrated pipeline piece, section steel in the longitudinal section steel multi-ribbed beams and/or the transverse section steel multi-ribbed beams is connected with steel bars of the bottom plate and is integrated by concrete tamping, the cover plate is placed on a precast concrete part of the 2 parallel longitudinal section steel multi-ribbed beams and/or the transverse section steel multi-ribbed beams, the bidirectional multi-ribbed cavity floor module for the steel structure has high industrialization degree, saves construction time, reduces the number of supporting rods of a supporting die and saves construction period, the cost can be effectively reduced.
Description
Technical Field
The invention relates to the technical field of fabricated buildings, in particular to a bidirectional ribbed cavity floor module for a steel structure and a construction method thereof.
Background
At present, steel bar truss floor bearing plates are only used in the application of steel structure floor systems except for cast-in-place concrete floor slabs. Compared with a cast-in-place concrete floor slab, the quantity of the supporting formwork and the cast-in-place concrete of the steel bar truss floor slab is not reduced, and only the quantity of the horizontal formworks is reduced, so that the steel bar truss floor slab is not a true assembly type construction process; neither the construction period nor the workload of manual work, especially wet work, can be reduced, nor the cost can be saved. The composite floor slab with more applications in the reinforced concrete structure at present has smaller suitable span, larger self weight of the floor slab, and the same and smaller wet operation amount of cast-in-place on the composite slab.
Concrete dense-rib cavity floor systems have been widely used in prefabricated concrete structures in recent years, and attempts have been made in steel structure engineering. For example, a utility model patent (patent No. ZL200420103009.7) of a cast-in-place concrete hidden ribbed slab-free hollow floor discloses a technical scheme that a prefabricated cover plate and a cast-in-place concrete section steel ribbed beam are combined into a concrete dense ribbed cavity floor, but the cast-in-place section steel ribbed beam and the cast-in-place slab mode are not assembly type buildings; for another example, an invention patent (patent No. ZL201310490037.2) of a bidirectional ribbed cavity floor and a construction method thereof discloses a technical scheme of forming a ribbed cavity floor by combining a section steel ribbed beam and a prefabricated reinforced concrete slab, and although the floor and the process can be listed in an assembly type construction technology, the construction process is complicated, and a prefabricated bottom plate and the section steel beam are not reliably connected.
Aiming at the problems, by combining the characteristics of the structure of the steel structure, a novel assembled multi-ribbed cavity module suitable for the fusion of the steel structure construction process is urgently needed to be developed.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a bidirectional multi-ribbed cavity floor module for a steel structure and a construction method thereof.
In order to achieve the above purposes, the technical scheme adopted by the invention is as follows:
a bidirectional multi-ribbed cavity floor module for a steel structure comprises at least 2 parallel longitudinal section steel multi-ribbed beams, at least 2 parallel transverse section steel multi-ribbed beams, at least 1 reinforced concrete base plate, at least 1 cover plate and at least 1 integrated pipeline piece, wherein section steel in the longitudinal section steel multi-ribbed beams and/or the transverse section steel multi-ribbed beams is connected with steel bars of the base plate and is tamped into a whole by concrete, the height of precast concrete in the longitudinal section steel multi-ribbed beams and/or the transverse section steel multi-ribbed beams is smaller than or equal to the designed height of the section steel multi-ribbed beams, the difference of the thickness of the cover plate is reduced, the integrated pipeline piece is fixed on the base plate, and the cover plate is placed on the precast concrete parts of the 2 parallel longitudinal section steel multi-ribbed beams and/or the transverse section steel multi-ribbed beams.
On the basis of the technical scheme, holes are reserved on a web plate or a side plate of the section steel in the longitudinal section steel multi-ribbed beam and/or the transverse section steel multi-ribbed beam; or a conduit is reserved in the hole; or the width of the longitudinal section steel multi-ribbed beam and/or the transverse section steel multi-ribbed beam is more than or equal to the width of the section steel upper flange of the longitudinal section steel multi-ribbed beam and/or the transverse section steel multi-ribbed beam or the width of the section steel.
3. The module of bi-directional multi-ribbed cavity floor system of claim 1, wherein: the center distance of the longitudinal section steel multi-ribbed beam and/or the transverse section steel multi-ribbed beam is 600-1200 mm; or the height of the longitudinal section steel multi-ribbed beam and/or the transverse section steel multi-ribbed beam is 200-1500 mm; or the width of the longitudinal section steel multi-ribbed beam and/or the transverse section steel multi-ribbed beam is 100-400 mm; or the number of the longitudinal section steel multi-ribbed beams and/or the transverse section steel multi-ribbed beams is 2, 3 or 4.
On the basis of the technical scheme, the sides of the upper and lower flange plates of the section steel in the longitudinal section steel multi-ribbed beam and/or the transverse section steel multi-ribbed beam are welded with stiffeners, and the stiffeners are one or a combination of steel bars, steel plate strips and steel mesh.
On the basis of the technical scheme, the section steel sections in the longitudinal section steel multi-ribbed beam and/or the transverse section steel multi-ribbed beam are in one or a combination of the shapes of I, T and L; or the section steel in the longitudinal section steel multi-ribbed beam and/or the transverse section steel multi-ribbed beam is a light steel composite structure.
On the basis of the technical scheme, the bottom plate is provided with reinforcing steel bars, reinforcing steel bar meshes or prestressed tendons; or when the bottom plate is provided with the steel bars and is vertically connected with the longitudinal section steel multi-ribbed beam and/or the transverse section steel multi-ribbed beam, the tail end of each vertical steel bar is provided with the longitudinal steel bars along the direction of the longitudinal section steel multi-ribbed beam and/or the transverse section steel multi-ribbed beam, and the longitudinal steel bars are welded with the web plate or the lower flange plate of the section steel beam; or the steel bars in the bottom plate, which are perpendicular to the longitudinal section steel multi-ribbed beam and/or the transverse section steel multi-ribbed beam, penetrate through the web plate or the side plate of the section steel multi-ribbed beam to extend outwards in one direction or two directions, so that the prefabricated bottom plate is single-sided or double-sided to the outer side of the longitudinal section steel multi-ribbed beam and/or the transverse section steel multi-ribbed beam, and the inside of the extracted bottom plate is provided with a bottom rib extending out of the plate edge.
On the basis of the technical scheme, the integrated pipeline piece is provided with 1 or more pipeline ports; or one or a plurality of combinations of a reserved junction box, an electric appliance fixing base, a power socket and a temperature-sensing fire alarm monitoring device are arranged on the upper surface, close to the bottom plate, in the integrated pipeline piece; or the integrated pipeline piece is positioned at the bottom of the longitudinal section steel multi-ribbed beam and/or the transverse section steel multi-ribbed beam.
On the basis of the technical scheme, the cover plate is formed by cast-in-place or prefabrication of reinforced concrete; or the reinforcing steel bars arranged in the cover plate extend out of the edge of the cover plate; or the width of the cover plate is more than or equal to the net spacing value of the adjacent 2 longitudinal section steel multi-ribbed beams or transverse section steel multi-ribbed beams; or the laying length of the cover plate arranged on the precast concrete part of the longitudinal section steel multi-ribbed beam and/or the transverse section steel multi-ribbed beam is 10 mm-20 mm; or the elevation of the plate bottom of the cover plate is equal to the elevation of the upper flange of the section steel in the longitudinal section steel multi-ribbed beam and/or the transverse section steel multi-ribbed beam or the elevation of the top surface of the section steel; or the plate of the cover plate is reserved with an access hole or a detection hole which is provided with a movable cover plate.
On the basis of the technical scheme, the two steel structures are spliced by the prefabricated ribbed cavity floor system module through lapping of the outward extending reinforcing steel bars of the bottom plate, a section steel beam is transversely placed and is respectively and rigidly connected with the two transverse section steel ribbed beams, and post-cast concrete is cured and formed;
or the prefabricated ribbed cavity floor system modules for the two steel structures are spliced by inserting a common longitudinal section steel ribbed beam and/or transverse section steel ribbed beam through corresponding two bottom plate overhanging reinforcing steel bars, rigidly connecting the common longitudinal section steel ribbed beam and/or transverse section steel ribbed beam with the longitudinal section steel ribbed beam and/or transverse section steel ribbed beam at the joint into a whole, and then pouring and tamping concrete together with the concrete of the longitudinal section steel ribbed beam and/or transverse section steel ribbed beam in site for forming;
or the splicing of the dense rib cavity floor modules for two steel structures is realized by rigidly connecting a longitudinal section steel dense rib beam and/or a transverse section steel dense rib beam of one module with a longitudinal section steel dense rib beam and/or a transverse section steel dense rib beam of the other module through an overhanging steel bar of a bottom plate of one module, and then pouring and tamping concrete together with the concrete of the longitudinal section steel dense rib beam and/or the transverse section steel dense rib beam to form the dense rib floor modules for the steel structures on site.
On the basis of the technical scheme, the construction method of the bidirectional ribbed cavity floor module for the steel structure comprises six steps of formwork support, hoisting, module connection, pipeline laying, plate closing and maintenance and form removal:
the step of formwork support is that supporting upright posts are arranged at the splicing positions of every two of the two-way ribbed cavity floor modules for the steel structure; or the top end of the supporting upright rod is provided with a top plate, and the top plate is firmly fixed with the section steel in the longitudinal section steel multi-ribbed beam and/or the transverse section steel multi-ribbed beam by adopting a notch, a tongue-and-groove, a stud, a screw or a bolt;
the module connection step is that after two-way multi-ribbed cavity floor modules for a steel structure are spliced in place, the two-way multi-ribbed cavity floor modules are lapped through the overhanging steel bars of the bottom plate, a section steel beam is transversely placed, the section steel beam is respectively and rigidly connected with two transverse section steel multi-ribbed beams, and post-cast concrete is cured and formed; or the prefabricated ribbed cavity floor system modules for the two steel structures are spliced by inserting a common longitudinal section steel ribbed beam and/or transverse section steel ribbed beam through corresponding two bottom plate overhanging reinforcing steel bars, rigidly connecting the common longitudinal section steel ribbed beam and/or transverse section steel ribbed beam with the longitudinal section steel ribbed beam and/or transverse section steel ribbed beam at the joint into a whole, and then pouring and tamping concrete together with the concrete of the longitudinal section steel ribbed beam and/or transverse section steel ribbed beam in site for forming; or the splicing of the multi-ribbed cavity floor system modules for two steel structures is realized by rigidly connecting a longitudinal section steel multi-ribbed beam and/or a transverse section steel multi-ribbed beam of one module with the longitudinal section steel multi-ribbed beam and/or the transverse section steel multi-ribbed beam at the joint through the overhanging steel bar of the bottom plate of one module, and then pouring and tamping concrete together with the concrete of the longitudinal section steel multi-ribbed beam and/or the transverse section steel multi-ribbed beam in site for forming;
the pipeline laying step is that a horizontal pipeline is laid on the bottom plate and reaches a use end interface through the integrated pipeline piece;
the plate closing step is that after the connecting step and the pipeline laying are finished, a bottom template is arranged on precast concrete in the longitudinal section steel multi-ribbed beam and/or the transverse section steel multi-ribbed beam, reinforcing steel bars of a cast-in-place cover plate are laid on the upper portion of the bottom template, and concrete of the overlapping portion of the longitudinal section steel multi-ribbed beam and/or the transverse section steel multi-ribbed beam and the cover plate is poured and tamped;
or the plate closing step is that after the connecting step and the pipeline laying are finished, a cover plate is laid on precast concrete in the longitudinal steel multi-ribbed beams and/or the transverse steel multi-ribbed beams, and concrete between the overlapping parts of the longitudinal steel multi-ribbed beams and/or the transverse steel multi-ribbed beams and the cover plate is poured and tamped.
Compared with the prior art, the invention has the advantages that:
(1) compared with the prior art, the bidirectional ribbed cavity floor module for the steel structure has the advantages that the prefabrication rate is high, and the industrialization degree is high; the assembled floor system has the advantages of high rigidity, high bearing capacity, high bidirectional stress performance and high integrity, can be more suitable for larger structural span, and is suitable for solving the problem of the assembled floor system of public buildings, even large-span public buildings.
(2) The bidirectional multi-ribbed cavity floor module for the steel structure and the construction method thereof completely realize no formwork support, have high prefabrication rate, save construction period and effectively reduce cost, and can quickly finish construction according to a construction scheme.
(3) The bidirectional ribbed cavity floor module for the steel structure is reasonable in layout, the self weight of the floor is reduced, the indoor clear height is increased, and the construction cost is reduced.
Drawings
FIG. 1 is a schematic structural view of a one-way multi-ribbed cavity floor module for a steel structure according to an embodiment of the present invention;
FIG. 2 is a schematic construction assembly diagram of a steel structure unidirectional multi-ribbed cavity floor module according to an embodiment of the present invention;
FIG. 3 is a schematic construction assembly diagram of a steel structure unidirectional multi-ribbed cavity floor module according to an embodiment of the present invention;
fig. 4 is a schematic construction assembly structure diagram of a unidirectional multi-ribbed cavity floor module for a steel structure in the embodiment of the invention.
In the figure: 1-multi-ribbed beam, 1-1-longitudinal section steel multi-ribbed beam, 1-2-transverse section steel multi-ribbed beam, 2-bottom plate, 3-cover plate, 4-integrated pipeline piece, 5-hole, 7-stiffener, 8-longitudinal steel bar, 9-supporting upright rod and 10-top plate.
Detailed Description
Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Referring to fig. 1, a schematic structural diagram of a two-way multi-ribbed cavity floor module for a steel structure in an embodiment of the invention is shown, and the module comprises at least 2 parallel longitudinal section steel multi-ribbed beams 1-1, at least 2 parallel transverse section steel multi-ribbed beams 1-2, at least 1 reinforced concrete base plate 2, at least 1 reinforced concrete cover plate 3 and at least 1 integrated pipeline member 4, wherein the section steel in the longitudinal section steel multi-ribbed beams 1-1 and/or the transverse section steel multi-ribbed beams 1-2 is connected with the steel bar of the base plate 2 and is tamped into a whole by concrete, the height of the precast concrete in the longitudinal section steel multi-ribbed beams 1-1 and/or the transverse section steel multi-ribbed beams 1-2 is less than or equal to the design height of the section steel multi-ribbed beams 1 to reduce the difference of the thickness of the cover plate 3, the integrated pipeline member 4 is fixed on the base plate 2, and the cover plate 3 is placed on the 2 parallel longitudinal section steel multi-ribbed beams 1-1 and/or the transverse section steel multi-ribbed beams 1-2 at the site of the precast concrete.
The center distance of the longitudinal section steel multi-ribbed beam 1-1 and/or the transverse section steel multi-ribbed beam 1-2 is 600-1200 mm; or the height of the longitudinal section steel multi-ribbed beam 1-1 and/or the transverse section steel multi-ribbed beam 1-2 is 200-1500 mm; or the width of the longitudinal section steel multi-ribbed beam 1-1 and/or the transverse section steel multi-ribbed beam 1-2 is 100-400 mm; or the number of the longitudinal section steel multi-ribbed beams 1-1 and/or the transverse section steel multi-ribbed beams 1-2 is 2, 3 or 4. A common span of such modules is given.
The side edges of the upper and lower flange plates of the section steel in the longitudinal section steel multi-ribbed beam 1-1 and/or the transverse section steel multi-ribbed beam 1-2 are welded with stiffeners 7, and the stiffeners 7 are one or a combination of steel bars, steel plate strips and steel mesh. The connecting performance of prefabricated or post-cast concrete in the longitudinal section steel multi-ribbed beam 1-1 and the transverse section steel multi-ribbed beam 1-2 and section steel beams and concrete is enhanced, and the shear strength of the multi-ribbed beam can be effectively improved, so that the self height of the section steel beams is reduced, the using function of a house is improved, and the construction cost is saved.
The section steel section in the longitudinal section steel multi-ribbed beam 1-1 and/or the transverse section steel multi-ribbed beam 1-2 is in one or a combination of the shapes of I, T and L; or the section steel in the longitudinal section steel multi-ribbed beam 1-1 and/or the transverse section steel multi-ribbed beam 1-2 is a light steel composite structure.
The bottom plate 2 is provided with reinforcing steel bars, reinforcing steel bar meshes or prestressed tendons; or when the bottom plate 2 is provided with the steel bars and is vertically connected with the longitudinal section steel multi-ribbed beam 1-1 and/or the transverse section steel multi-ribbed beam 1-2, the tail end of each vertical steel bar is provided with the longitudinal steel bar 8 along the direction of the longitudinal section steel multi-ribbed beam 1-1 and/or the transverse section steel multi-ribbed beam 1-2, and the longitudinal steel bar 8 is welded with the web plate or the lower flange plate of the section steel beam 1; or the steel bars in the bottom plate 2, which are perpendicular to the longitudinal section steel multi-ribbed beam 1-1 and/or the transverse section steel multi-ribbed beam 1-2, penetrate through the web plate or the side plate of the section steel multi-ribbed beam 1 to extend outwards in one direction or two directions, so that the prefabricated bottom plate 2 is single-edge or double-edge projected to the outer side of the longitudinal section steel multi-ribbed beam 1-1 and/or the transverse section steel multi-ribbed beam 1-2, and the bottom ribs in the projected bottom plate 2 extend out of the plate edge.
The integrated pipeline piece 4 is provided with 1 or more pipeline inlets and outlets; or the integrated pipeline piece 4 is communicated with the hole 5 or the conduit; or one or a plurality of combinations of a reserved junction box, an electric appliance fixing base, a power socket and a temperature-sensing fire alarm monitoring device are arranged on the upper surface, close to the bottom plate 2, in the integrated pipeline piece 4; or the integrated pipeline part 4 is positioned at the bottom of the longitudinal section steel multi-ribbed beam 1-1 and/or the transverse section steel multi-ribbed beam 1-2.
The cover plate 3 is prefabricated and molded by reinforced concrete; or the reinforcing steel bars arranged in the cover plate 3 extend out of the edge of the cover plate 3; or the width of the cover plate 3 is more than or equal to the net spacing value of 1-1 of the adjacent 2 longitudinal section steel multi-ribbed beams or 1-2 of the transverse section steel multi-ribbed beams; or the laying length of the cover plate 3 laid on the precast concrete part of the longitudinal section steel multi-ribbed beam 1-1 and/or the transverse section steel multi-ribbed beam 1-2 is 10 mm-20 mm; or the elevation of the bottom of the cover plate 3 is equal to the elevation of the upper flange of the internal section steel or the top surface of the section steel of the longitudinal section steel multi-ribbed beam 1-1 and/or the transverse section steel multi-ribbed beam 1-2; or the plate of the cover plate 3 is reserved with an access hole or a detection hole which is provided with a movable cover plate.
Referring to fig. 2, which is a schematic view of a construction assembly structure of a one-way multi-ribbed cavity floor module for a steel structure in the embodiment of the invention, two prefabricated multi-ribbed cavity floor modules for a steel structure are spliced by overlapping through an overhanging steel bar of a bottom plate 2, a section steel beam is transversely placed, the section steel beam is respectively and rigidly connected with two transverse section steel multi-ribbed beams 1-2, and post-cast concrete is cured and formed;
referring to fig. 3, a schematic view of a construction assembly structure of a one-way ribbed cavity floor module for a steel structure in the embodiment of the invention is shown, or two prefabricated ribbed cavity floor modules for a steel structure are spliced by inserting a common longitudinal steel ribbed beam 1-1 and/or transverse steel ribbed beam 1-2 through corresponding two base plate 2 external extending steel bars, rigidly connecting the common longitudinal steel ribbed beam 1-1 and/or transverse steel ribbed beam 1-2 at the joint into a whole, and then casting and tamping concrete together with the concrete of the longitudinal steel ribbed beam 1-1 and/or transverse steel ribbed beam 1-2 to form the prefabricated ribbed cavity floor module;
referring to fig. 4, a schematic view of a construction assembly structure of a one-way multi-ribbed cavity floor module for a steel structure in an embodiment of the invention is shown, or two multi-ribbed cavity floor modules for a steel structure are assembled by rigidly connecting a longitudinal section steel multi-ribbed beam 1-1 and/or a transverse section steel multi-ribbed beam 1-2 of one module with a longitudinal section steel multi-ribbed beam 1-1 and/or a transverse section steel multi-ribbed beam 1-2 at a joint part through an overhanging steel bar of a bottom plate 2 of one module, and then cast and stamp concrete on site together with concrete of the longitudinal section steel multi-ribbed beam 1-1 and/or the transverse section steel multi-ribbed beam 1-2.
A construction method of a two-way ribbed cavity floor module for a steel structure comprises six steps of formwork erecting, hoisting, module connecting, pipeline laying, plate closing and maintenance and form removal, and is characterized in that:
the step of formwork erection is that supporting upright rods 9 are arranged at the splicing positions of every two of the two-way ribbed cavity floor modules for the steel structure; or the top end of the supporting upright rod 9 is provided with a top plate 10, and the top plate 10 is firmly fixed with the section steel in the longitudinal section steel multi-ribbed beam 1-1 and/or the transverse section steel multi-ribbed beam 1-2 by adopting a notch, a tongue-and-groove, a stud, a screw or a bolt;
the module connection step is that after two-way multi-ribbed cavity floor modules for a steel structure are spliced in place, the two-way multi-ribbed cavity floor modules are lapped through the overhanging steel bars of the bottom plate 2, a section steel beam is transversely placed, the section steel beam is respectively and rigidly connected with two transverse section steel multi-ribbed beams 1-2, and post-cast concrete is cured and formed; or the prefabricated ribbed cavity floor system modules for two steel structures are spliced by inserting a common longitudinal section steel ribbed beam 1-1 and/or a transverse section steel ribbed beam 1-2 through corresponding two bottom plate 2 overhanging reinforcing steel bars, rigidly connecting the common longitudinal section steel ribbed beam 1-1 and/or the transverse section steel ribbed beam 1-2 at the joint into a whole, and then casting and tamping concrete together with the concrete of the longitudinal section steel ribbed beam 1-1 and/or the transverse section steel ribbed beam 1-2 to form the prefabricated ribbed cavity floor system modules on site; or the splicing of the multi-ribbed cavity floor system modules for two steel structures is realized by rigidly connecting a longitudinal section steel multi-ribbed beam 1-1 and/or a transverse section steel multi-ribbed beam 1-2 of one module with a longitudinal section steel multi-ribbed beam 1-1 and/or a transverse section steel multi-ribbed beam 1-2 at the joint part through an overhanging steel bar of a bottom plate 2 of one module, and then pouring and tamping concrete together with the longitudinal section steel multi-ribbed beam 1-1 and/or the transverse section steel multi-ribbed beam 1-2 for forming on site;
the pipeline laying step is that a horizontal pipeline is laid on the bottom plate 2 and reaches a use end interface through the integrated pipeline piece 4;
the plate closing step is that after the connecting step and the pipeline laying are finished, a bottom template is arranged on precast concrete in the longitudinal section steel multi-ribbed beam 1-1 and/or the transverse section steel multi-ribbed beam 1-2, reinforcing steel bars of a cast-in-place cover plate 3 are laid on the upper portion of the bottom template, and concrete of the overlapping portion of the longitudinal section steel multi-ribbed beam 1-1 and/or the transverse section steel multi-ribbed beam 1-2 and the cover plate 3 is poured and tamped;
or the plate closing step is that after the connecting step and the pipeline laying are finished, a cover plate 3 is laid on the precast concrete in the longitudinal steel multi-ribbed beam 1-1 and/or the transverse steel multi-ribbed beam 1-2, and the concrete between the overlapping part of the longitudinal steel multi-ribbed beam 1-1 and/or the transverse steel multi-ribbed beam 1-2 and the cover plate 3 is cast and tamped.
The bidirectional ribbed cavity floor module for the steel structure has the advantages of high rigidity, strong bearing capacity, complete mold support free, high prefabrication rate and high industrialization degree. The prefabricated floor slab is not only suitable for solving the problem of the prefabricated floor slab of a building type with large quantity and small span like a house, but also suitable for solving the problem of the prefabricated floor slab of a public building, even a large-span public building. The self weight of the floor is reduced, the construction period is shortened, the indoor clear height is increased, and the construction cost can be reduced.
In addition, the prefabricated bidirectional multi-ribbed cavity floor module for the steel structure has good bidirectional stress performance and strong integrity, and can be more suitable for larger structural span than a unidirectional prefabricated multi-ribbed cavity floor module.
Compared with the prior art, the bidirectional ribbed cavity floor module for the steel structure has the advantages of high rigidity, high bearing capacity, good bidirectional stress performance and high integrity, can be more suitable for larger structural span, and is suitable for solving the problem of assembled floor of public buildings, even large-span public buildings.
The present invention is not limited to the above-described embodiments, and it will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and such modifications and improvements are also considered to be within the scope of the present invention. Those not described in detail in this specification are within the skill of the art.
Claims (10)
1. The utility model provides a two-way close rib cavity superstructure module for steel construction comprises 2 parallel vertical shaped steel close rib roof beams (1-1), 2 parallel horizontal shaped steel close rib roof beams (1-2), 1 piece at least reinforced concrete bottom plate (2), 1 piece at least apron (3) and 1 piece at least integrated pipe spare (4) its characterized in that: the profile steel in the longitudinal profile steel dense-rib beam (1-1) and/or the transverse profile steel dense-rib beam (1-2) is connected with the steel bar of the bottom plate (2) and is tamped into a whole by concrete, the height of the precast concrete in the longitudinal profile steel dense-rib beam (1-1) and/or the transverse profile steel dense-rib beam (1-2) is less than or equal to the design height of the profile steel dense-rib beam (1) and the difference value of the thickness of the cover plate (3) is reduced, the integrated pipeline (4) is fixed on the top of the bottom plate (2), and the cover plate (3) is placed on the precast concrete part of the 2 parallel longitudinal profile steel dense-rib beams (1-1) and/or the transverse profile steel dense-rib beams (1-2).
2. The module of bi-directional multi-ribbed cavity floor system of claim 1, wherein: holes (5) are reserved on the web plate or the side plate of the section steel in the longitudinal section steel multi-ribbed beam (1-1) and/or the transverse section steel multi-ribbed beam (1-2); or a guide pipe is reserved in the hole (5); or the width of the longitudinal section steel multi-ribbed beam (1-1) and/or the transverse section steel multi-ribbed beam (1-2) is more than or equal to the width of the section steel upper flange of the longitudinal section steel multi-ribbed beam (1-1) and/or the transverse section steel multi-ribbed beam (1-2) or the width of the section steel.
3. The module of bi-directional multi-ribbed cavity floor system of claim 1, wherein: the center distance of the longitudinal section steel multi-ribbed beam (1-1) and/or the transverse section steel multi-ribbed beam (1-2) is 600-1200 mm; or the height of the longitudinal section steel multi-ribbed beam (1-1) and/or the transverse section steel multi-ribbed beam (1-2) is 200-1500 mm; or the width of the longitudinal section steel multi-ribbed beam (1-1) and/or the transverse section steel multi-ribbed beam (1-2) is 100-400 mm; or the number of the longitudinal section steel multi-ribbed beams (1-1) and/or the transverse section steel multi-ribbed beams (1-2) is 2, 3 or 4.
4. The module of bi-directional multi-ribbed cavity floor system of claim 1, wherein: the side edges of the upper and lower flange plates of the section steel in the longitudinal section steel multi-ribbed beam (1-1) and/or the transverse section steel multi-ribbed beam (1-2) are welded with stiffeners (7), and the stiffeners (7) are one or a combination of steel bars, steel plate strips and steel mesh.
5. The module of bi-directional multi-ribbed cavity floor system of claim 1, wherein: the section steel section in the longitudinal section steel multi-ribbed beam (1-1) and/or the transverse section steel multi-ribbed beam (1-2) is in one or a combination of the shapes of I, T and L; or the section steel in the longitudinal section steel multi-ribbed beam (1-1) and/or the transverse section steel multi-ribbed beam (1-2) is a light steel composite structure.
6. The module of bi-directional multi-ribbed cavity floor system of claim 1, wherein: the bottom plate (2) is provided with reinforcing steel bars, reinforcing steel bar meshes or prestressed tendons; or when the bottom plate (2) is provided with the steel bars and the longitudinal section steel multi-ribbed beam (1-1) and/or the transverse section steel multi-ribbed beam (1-2) to be vertically connected, the tail end of each vertical steel bar is provided with the longitudinal steel bar (8) along the direction of the longitudinal section steel multi-ribbed beam (1-1) and/or the transverse section steel multi-ribbed beam (1-2), and the longitudinal steel bar (8) is welded with a web plate or a lower flange plate of the section steel beam (1); or the steel bars in the bottom plate (2) perpendicular to the longitudinal section steel multi-ribbed beams (1-1) and/or the transverse section steel multi-ribbed beams (1-2) extend outwards in one direction or two directions through the web plate or the side plate of the section steel multi-ribbed beams (1), so that the prefabricated bottom plate (2) is/are projected out from the longitudinal section steel multi-ribbed beams (1-1) and/or the transverse section steel multi-ribbed beams (1-2) in one side or two sides, and the bottom ribs in the projected bottom plate (2) extend out of the plate edge.
7. The module of bi-directional multi-ribbed cavity floor system of claim 1, wherein: the integrated pipeline piece (4) is provided with 1 or more pipeline ports; or one or a plurality of combinations of a reserved junction box, an electric appliance fixing base, a power socket and a temperature-sensing fire alarm monitoring device are arranged on the upper surface, close to the bottom plate (2), in the integrated pipeline piece (4); or the integrated pipeline piece (4) is positioned at the bottom of the longitudinal section steel multi-ribbed beam (1-1) and/or the transverse section steel multi-ribbed beam (1-2).
8. The module of bi-directional multi-ribbed cavity floor system of claim 1, wherein: the cover plate (3) is formed by cast-in-place or prefabrication of reinforced concrete; or the reinforcing steel bars arranged in the cover plate (3) extend out of the edge of the cover plate (3); or the width of the cover plate (3) is more than or equal to the net spacing value of 2 adjacent longitudinal section steel multi-ribbed beams (1-1) or transverse section steel multi-ribbed beams (1-2); or the laying length of the cover plate (3) arranged on the precast concrete part of the longitudinal section steel multi-ribbed beam (1-1) and/or the transverse section steel multi-ribbed beam (1-2) is 10 mm-20 mm; or the elevation of the bottom of the cover plate (3) is equal to the elevation of the upper flange of the internal section steel or the top surface of the section steel of the longitudinal section steel multi-ribbed beam (1-1) and/or the transverse section steel multi-ribbed beam (1-2); or an access hole or a detection hole is reserved on the plate of the cover plate (3), and the access hole or the detection hole is provided with a movable cover plate.
9. The module of bi-directional multi-ribbed cavity floor system of claim 1, wherein: the splicing of the prefabricated ribbed cavity floor system modules for the two steel structures is realized by lapping through the overhanging steel bars of the bottom plate (2), transversely placing a section steel beam, respectively and rigidly connecting the two transverse section steel ribbed beams (1-2), and performing post-cast concrete curing and forming;
or the prefabricated ribbed cavity floor system modules for two steel structures are spliced by inserting a public longitudinal section steel ribbed beam (1-1) and/or a public transverse section steel ribbed beam (1-2) through corresponding two bottom plate (2) overhanging reinforcing steel bars, rigidly connecting the public longitudinal section steel ribbed beam (1-1) and/or the public transverse section steel ribbed beam (1-2) at the joint into a whole, and pouring and tamping concrete together with the concrete of the longitudinal section steel ribbed beam (1-1) and/or the transverse section steel ribbed beam (1-2) for forming on site;
or the splicing of the multi-ribbed cavity floor system modules for two steel structures is realized by rigidly connecting the longitudinal section steel multi-ribbed beam (1-1) and/or the transverse section steel multi-ribbed beam (1-2) of one module with the longitudinal section steel multi-ribbed beam (1-1) and/or the transverse section steel multi-ribbed beam (1-2) at the joint through the overhanging steel bar of the bottom plate (2) of one module, and then pouring and tamping concrete together with the concrete of the longitudinal section steel multi-ribbed beam (1-1) and/or the transverse section steel multi-ribbed beam (1-2) to form the multi-ribbed cavity floor system modules for the steel structures on site.
10. A construction method of a two-way ribbed cavity floor module for a steel structure comprises six steps of formwork erecting, hoisting, module connecting, pipeline laying, plate closing and maintenance and form removal, and is characterized in that:
the step of formwork support is that supporting upright rods (9) are arranged at the splicing positions of every two of the two-way ribbed cavity floor modules for the steel structure; or the top end of the supporting upright rod (9) is provided with a top plate (10), and the top plate (10) is firmly fixed with the section steel in the longitudinal section steel multi-ribbed beam (1-1) and/or the transverse section steel multi-ribbed beam (1-2) by adopting a notch, a tongue-and-groove, a stud, a screw or a bolt;
the module connection step is that after two-way multi-ribbed cavity floor modules for a steel structure are spliced in place, the two-way multi-ribbed cavity floor modules are lapped through the overhanging steel bars of the bottom plate (2), a section steel beam is transversely placed and is respectively and rigidly connected with two transverse section steel multi-ribbed beams (1-2), and post-cast concrete is cured and formed; or the prefabricated ribbed cavity floor system modules for two steel structures are spliced by inserting a public longitudinal section steel ribbed beam (1-1) and/or a public transverse section steel ribbed beam (1-2) through corresponding two bottom plate (2) overhanging reinforcing steel bars, rigidly connecting the public longitudinal section steel ribbed beam (1-1) and/or the public transverse section steel ribbed beam (1-2) at the joint into a whole, and pouring and tamping concrete together with the concrete of the longitudinal section steel ribbed beam (1-1) and/or the transverse section steel ribbed beam (1-2) for forming on site; or the splicing of the multi-ribbed cavity floor system modules for two steel structures is realized by rigidly connecting the longitudinal section steel multi-ribbed beam (1-1) and/or the transverse section steel multi-ribbed beam (1-2) of one module with the longitudinal section steel multi-ribbed beam (1-1) and/or the transverse section steel multi-ribbed beam (1-2) at the joint through the overhanging steel bar of the bottom plate (2) of one module, and then pouring and tamping concrete together with the concrete of the longitudinal section steel multi-ribbed beam (1-1) and/or the transverse section steel multi-ribbed beam (1-2) for forming on site;
the pipeline laying step is that a horizontal pipeline is laid on the bottom plate (2) and reaches a use end interface through the integrated pipeline piece (4);
the plate closing step is that after the connecting step and the pipeline laying are finished, a bottom template is arranged on precast concrete in the longitudinal section steel multi-ribbed beam (1-1) and/or the transverse section steel multi-ribbed beam (1-2), reinforcing steel bars of a cast-in-place cover plate (3) are laid on the upper portion of the bottom template, and concrete of the overlapping portion of the longitudinal section steel multi-ribbed beam (1-1) and/or the transverse section steel multi-ribbed beam (1-2) and the cover plate (3) is poured and tamped;
or the plate closing step is that after the connecting step and the pipeline laying are finished, a cover plate (3) is laid on precast concrete in the longitudinal section steel multi-ribbed beam (1-1) and/or the transverse section steel multi-ribbed beam (1-2), and concrete between the overlapping part of the longitudinal section steel multi-ribbed beam (1-1) and/or the transverse section steel multi-ribbed beam (1-2) and the cover plate (3) is poured and tamped.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024016411A1 (en) * | 2022-07-21 | 2024-01-25 | 中国船舶重工集团国际工程有限公司 | Composite floor system for boxboard prefabricated building, and mounting method therefor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024016411A1 (en) * | 2022-07-21 | 2024-01-25 | 中国船舶重工集团国际工程有限公司 | Composite floor system for boxboard prefabricated building, and mounting method therefor |
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