CN113445650A - Assembled steel structure combined floor system and installation method thereof - Google Patents
Assembled steel structure combined floor system and installation method thereof Download PDFInfo
- Publication number
- CN113445650A CN113445650A CN202110764456.5A CN202110764456A CN113445650A CN 113445650 A CN113445650 A CN 113445650A CN 202110764456 A CN202110764456 A CN 202110764456A CN 113445650 A CN113445650 A CN 113445650A
- Authority
- CN
- China
- Prior art keywords
- steel
- bar truss
- steel bar
- unequal
- composite floor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
- E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
-
- 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
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
- E04B1/68—Sealings of joints, e.g. expansion joints
-
- 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
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
- E04B1/68—Sealings of joints, e.g. expansion joints
- E04B1/6806—Waterstops
-
- 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
- E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
- E04B5/023—Separate connecting devices for prefabricated floor-slabs
-
- 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
- E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
- E04B5/10—Load-carrying floor structures formed substantially of prefabricated units with metal beams or girders, e.g. with steel lattice girders
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention provides an assembly type steel structure combined floor system and an installation method thereof. The system comprises unequal-width flange steel secondary beams (1), steel bar truss floor bearing plates (2), steel frame beams (3) and steel connecting pieces (4). The unequal-width flange steel secondary beam (1) and the steel bar truss floor bearing plate (2) are transported to a construction site to be installed after being integrally prefabricated in a factory, the unequal-width flange steel secondary beam (1) and the steel bar truss floor bearing plate (2) form a combined floor slab, the combined floor slab is connected through a pre-buried steel connecting piece (4) and a high-strength bolt, and the unequal-width flange steel secondary beam (1) and the steel bar truss floor bearing plate (3) are connected through a connecting plate and the high-strength bolt. According to the invention, the flange steel secondary beams with different widths and the steel bar truss floor bearing plate are manufactured together, so that the rigidity of the composite floor slab is improved, the connection with the main structure is enhanced, and the design concept of no-wet operation and full assembly on a construction site is realized by adopting a high-strength bolt connection mode.
Description
Technical Field
The invention relates to the technical field of assembled steel structures, in particular to an assembled steel structure combined floor system and an installation method thereof.
Background
The profiled steel sheet-concrete composite floor slab is a stressed member which combines two materials with different properties, namely profiled steel sheet and concrete, into a whole, so that the profiled steel sheet-concrete composite floor slab can work together. In order to enhance the combination effect between the profiled steel plates and the concrete, a structural designer ensures the combination effect between the profiled steel plates by arranging the indentation on the surface of the profiled steel plates, changing the section form of the profiled steel plates, arranging the shear connector and the like, thereby realizing that the profiled steel plates replace the tension steel bars to bear the tensile stress and the upper concrete bears the compressive stress on the whole, and finally achieving the purpose of improving the economic benefit of the composite floor slab.
In recent years, with the vigorous development of the building industry in China, a large number of high-rise and super high-rise buildings adopt profiled steel sheet-concrete composite slabs as floor slabs and roof slabs of main structures, and typical representatives of the buildings in engineering application include Shanghai Jinmao buildings, Beijing Shangri-La restaurants, Shenyang city and constant-elevation squares.
However, in the prior art, the profiled steel sheet concrete floor still needs to be cast with concrete at the construction site, and the problem of connection and force transmission between the floors after the prefabricated floor is transported to the construction site is not solved. In the assembling process of the floor slabs in the assembly type building, the floor slabs are overlapped on the wall slabs or the beams, the adjacent floor slabs are only densely spliced and do not form reliable connection, the pressure born by the floor slabs is not completely the same, so that the transmission of internal force between the floor slabs is not facilitated, especially when the difference of the pressure born by the adjacent floor slabs is large, the splicing surfaces of the floor slabs generate cracks, the appearance is influenced on the one hand, and the water leakage phenomenon can be caused on the other hand.
In view of the above, it is desirable to develop a floor slab connection node which has a firm connection and is advantageous for transferring internal force between floor slabs.
Disclosure of Invention
The invention provides an assembled steel structure combined floor system and an installation method thereof, which aim to overcome the problems in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme.
According to an aspect of the present invention, there is provided an assembled steel structure composite floor system, comprising: the steel truss floor slab comprises flange steel secondary beams (1) with different widths, steel bar truss floor bearing plates (2), steel frame beams (3) and steel connecting pieces (4);
unequal-width flange steel secondary beams (1) and steel bar truss floor bearing plates (2) are transported to a construction site for installation after being integrally prefabricated in a factory, combined floor slabs are formed by the unequal-width flange steel secondary beams (1) and the steel bar truss floor bearing plates (2), the combined floor slabs are connected through pre-buried steel connecting pieces (4) and bolts, the steel connecting pieces (4) stretch into the concrete floor slabs for a certain length, and the unequal-width flange steel secondary beams (1) are connected with the steel bar truss beams (3) through connecting plates and bolts.
Preferably, the unequal-width flange steel secondary beam (1) is connected with the steel bar truss floor bearing plate (2) in an enhanced mode through studs, the composite floor slab comprises an edge span composite floor slab and a mid-span composite floor slab, and a connecting part between the mid-span composite floor slab (25) and the edge span composite floor slab (24) is connected through bolts.
Preferably, the ratio of the length to the thickness of the overhanging part of the flange steel secondary beam (1) with different widths does not exceed
fyIndicates the yield strength of the steel.
Preferably, studs are welded on one side of the long flange of the unequal-width flange steel secondary beam (1), the distance between the studs is set to be one at intervals of 300mm, bolt holes are formed in the other side of the long flange of the unequal-width flange steel secondary beam (1), and the unequal-width flange steel secondary beam (1), the steel bar truss floor bearing plate (2) and the unequal-width flange steel secondary beam (1) in the other direction are spliced through steel connecting pieces (4) and bolts.
Preferably, the unequal-width flange steel secondary beam (1) and the steel frame beam (3) are connected through a connecting plate and a bolt, and a stiffening rib is arranged at the splicing position of a steel secondary beam web plate of the steel frame beam (3).
Preferably, the overhanging length of the concrete overhanging connection part of the steel bar truss floor bearing plate (2) along the direction of the secondary beam should not be less than 120mm, and the thickness should not be less than 50mm, the distance between bolt holes arranged on the steel bar truss floor bearing plate (2) is not less than 3 times of the diameter of the bolt and is not more than 200mm, the length of another steel bar truss floor bearing plate (2) lapped with the overhanging part should not be less than 120mm, the thickness should not be less than 50mm, the sum of the thicknesses of the lapped parts should be less than the thickness of the steel bar truss floor bearing plate (2), and the difference should not be less than 20 mm.
Preferably, the spliced part of the steel bar truss floor bearing plate (2) after the lap joint is finished is plugged by hard mortar and 5% of waterproof powder, and the spliced part of the steel bar truss floor bearing plate (2) and the column wall is plugged by the hard mortar and 5% of waterproof powder.
Preferably, steel connecting piece (4) are pre-buried in steel bar truss floor carrier plate's (2) inside, and the diameter of the afterbody reinforcing bar of steel connecting piece (4) is not less than 12mm, and the length in the district of not buckling is not less than 35 times reinforcing bar diameter, and the district of buckling has 90 and buckles, and length of buckling is not less than 3 times reinforcing bar diameter, and every reinforcing bar interval is not less than 30mm, the steel sheet thickness of steel connecting piece (4) is not less than reinforcing bar thickness +2 mm.
According to another aspect of the present invention, there is provided an installation method of the fabricated steel structure composite floor system, comprising:
firstly, manufacturing a mid-span composite floor slab 25, welding studs on steel beams, erecting profiled steel plates, pouring concrete, transporting to a construction site after the concrete is finally set, and manufacturing a side-span composite floor slab 24 according to the same method; firstly hoisting a mid-span composite floor slab 25 and then hoisting side-span composite floor slabs 24 on two sides in a construction site, wherein the connection parts between the mid-span composite floor slab 25 and the side-span composite floor slabs 24 are connected through bolts;
in a component processing factory, firstly, steel bar truss floor bearing plates (2) are erected, studs are welded, the steel bar truss floor bearing plates (2) in the span are lapped on flanges of two unequal-width flange steel secondary beams (1), the unequal-width flange steel secondary beams (1) are connected with stiffening ribs of steel frame beams (3) through connecting plates and bolts, the steel bar truss floor bearing plates (2) on the left side and the right side are laid after connection is finished, and flanges of unequal-width flange steel secondary beams (1) at the splicing positions and reserved extending connecting bands of the steel bar truss floor bearing plates (2) are connected through bolts; connecting the flange of the steel frame beam (1) with the steel bar truss floor bearing plate (2) through bolts;
the steel connecting pieces (4) are pre-buried inside the steel bar truss floor bearing plate (2), concrete is poured after the templates are supported, construction of the mid-span composite floor slab (25) is completed after final setting of the concrete is completed, the construction process of the side-span composite floor slab (24) is consistent with that of the mid-span composite floor slab (25), and the composite floor slab is transported to a construction site after construction is completed;
at the construction site, the steel frame beam (3) and the steel column (5) pass through the bolt (34), after the installation of connecting plate (35), the hoist and mount span composite floor (25), the steel secondary beam passes through connecting plate (16) and is connected with steel frame beam (3) stiffening rib (32) with bolt (17), then hoist and mount the limit and stride composite floor (24), connect two steel bar truss building carrier plates through bolt (21), rethread bolt (36) connection steel bar truss building carrier plate (2) and major structure, at last at steel bar truss building carrier plate concatenation department and with column wall clearance fill hard mortar and waterproof powder and carry out the shutoff, this moment assembled steel structure composite floor system installation is accomplished.
According to the technical scheme provided by the embodiment of the invention, the secondary beam and the steel bar truss floor bearing plate are manufactured together, so that the rigidity of the composite floor is improved, the connection with the main structure is enhanced, and the design concept of no-wet operation and full assembly on a construction site is realized by adopting a high-strength bolt connection mode. The invention adopts the steel secondary beam with unequal width flanges, and increases the connection between the floor slab and the steel secondary beam in order to reduce the lap joint length of the floor bearing plate of the steel bar truss.
In the invention, hard mortar and 5% of waterproof powder are arranged at the splicing part of the steel bar truss floor bearing plate and in the gap between the steel bar truss floor bearing plate and the steel ball wall for plugging, and water leakage and water seepage at two positions are prevented.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is an overall view of an assembled steel structure composite floor system according to an embodiment of the present invention;
FIG. 2 is a partial cross-sectional view of an assembled steel structure composite floor system and a positional relationship diagram of the components according to an embodiment of the present invention;
FIG. 3 is an exploded view of the components of an assembled steel structure composite floor system according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a steel frame beam of an assembled steel structure composite floor system according to an embodiment of the present invention;
fig. 5 is a schematic diagram illustrating a positional relationship between components of a composite floor slab according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a steel connecting member of an assembled steel structure composite floor system according to an embodiment of the present invention;
FIG. 7 is a schematic structural diagram of an assembled steel column according to an embodiment of the present invention;
fig. 8 is a schematic cross-sectional view of a steel secondary beam with unequal-width flanges according to an embodiment of the present invention;
fig. 9 is a completed assembly view of an assembled steel structure composite floor system and other members according to an embodiment of the present invention.
Reference numerals:
1-unequal width flange steel secondary beam; 2-steel bar truss floor bearing plate; 3-a steel frame beam; 4-steel connectors; 5-steel column; 6-position of section
11-unequal width flange steel secondary beam upper flange; 12-unequal width flange steel secondary beam web plates; 13-unequal width flange steel secondary beam lower flange; 14-unequal-width flange steel secondary beams and steel bar truss floor bearing plates are connected with holes through high-strength bolts; 15-unequal width flange steel secondary beam upper flange stud; 16-unequal width flange steel secondary beam and steel frame beam connecting plate; 17-high-strength bolts for connecting the flange steel secondary beams with different widths and the steel frame beam; 18-unequal-width flange steel secondary beam upper flange long flange
21-unequal-width flange steel secondary beams and steel bar truss floor bearing plates are connected through high-strength bolts; 22-overhanging connecting bands are reserved on the steel bar truss floor bearing plate; and (4) reserving high-strength bolt connecting holes in the 23-steel bar truss floor bearing plate. 24-side span composite floor slab; 25-midspan composite floor slab;
31-unequal-width flange steel secondary beams are connected with the steel frame beam and provided with stiffening ribs; the 32-unequal-width flange steel secondary beam is connected with the steel frame beam and is provided with a high-strength bolt hole; 33-a high-strength bolt hole for connecting the steel frame beam and the steel bar truss floor bearing plate; 34-connecting plates for connecting the steel frame beams and the steel columns; 35-connecting the steel frame beam and the steel column by using a high-strength bolt; 35-a high-strength bolt for connecting the steel frame beam and the steel bar truss floor bearing plate;
41-steel connector connection plate; the 42-steel connecting piece connecting plate is connected with the truss floor bearing plate and the steel secondary beam and is provided with a high-strength bolt hole; 43-steel connector anchoring bar; 44 steel connecting piece bending steel bar;
51-steel column cantilever section.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or coupled. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
For the convenience of understanding the embodiments of the present invention, the following description will be further explained by taking several specific embodiments as examples in conjunction with the drawings, and the embodiments are not to be construed as limiting the embodiments of the present invention.
The structure of the assembled steel structure composite floor system provided by the embodiment of the invention is shown in figure 1, and comprises unequal-width flange steel secondary beams (1), steel bar truss floor bearing plates (2), steel frame beams (3), steel connecting pieces (4), steel columns (5) and section positions (6). Also comprises a stud, a high-strength bolt, hard mortar and waterproof powder. A partial sectional view and a positional relationship diagram of each component of the fabricated steel structure composite floor system are shown in fig. 2, an exploded view of each component is shown in fig. 3, and the components are connected mainly by high-strength bolts (36, 21, 17).
The unequal-width flange steel secondary beam (1) and the steel bar truss floor bearing plate (2) are transported to a construction site for installation after being prefabricated in a factory, and the unequal-width flange steel secondary beam (1) is connected with the steel bar truss floor bearing plate (2) in an enhanced mode through the studs. The unequal-width flange steel secondary beams (1) and the steel bar truss floor bearing plates (2) form a composite floor slab, and fig. 5 is a schematic diagram of the position relationship of each part of the composite floor slab provided by the embodiment of the invention. The composite floor slab comprises an edge span composite floor slab and a middle span composite floor slab, and the middle span composite floor slab is also referred to as a middle span steel bar truss floor bearing plate. The combined floor boards are connected through pre-buried steel connecting pieces (4) and high-strength bolts, wherein the steel connecting pieces (4) are required to stretch into the concrete floor boards for a certain length, and the connection performance of the steel bar truss floor bearing plates (2) is guaranteed.
FIG. 8 is a schematic cross-sectional view of an unequal-width flange steel secondary beam (1), according to an embodiment of the present invention, wherein the ratio of the length to the thickness of the overhanging portion of the unequal-width flange steel secondary beam (1) is not more than
fyIndicates the yield strength of the steel. One side of the long flange of the unequal-width flange steel secondary beam (1) is welded with studs, the stud spacing is set at intervals of 300mm, the other side of the long flange of the unequal-width flange steel secondary beam (1) is provided with high-strength bolt holes, and the unequal-width flange steel secondary beam (1) and the steel bar truss floor bearing plate (2) as well as the unequal-width flange steel secondary beam (1) in the other direction are spliced by using the high-strength bolt holes and are connected with high-strength bolts through steel connecting pieces (4).
Fig. 4 is a schematic structural diagram of a steel frame beam (3) of an assembled steel structure composite floor system according to an embodiment of the present invention, the unequal-width flange steel secondary beam (1) and the steel frame beam (3) are connected by a connecting plate and a high-strength bolt, a stiffening rib is disposed at a splicing position of a steel secondary beam web of the steel frame beam (3), and the unequal-width flange steel secondary beam (1) is simply supported on the steel frame beam (3).
Overhanging length of the overhanging connecting portion of concrete along secondary beam direction of steel bar truss floor carrier plate (2) should not be less than 120mm, and thickness is not less than 50mm, and the interval of the high strength bolt hole that sets up on steel bar truss floor carrier plate 2 is not less than 3 times the diameter of high strength bolt, is not more than 200 mm. The length of the other steel bar truss floor support plate 2 overlapped with the overhanging part is not less than 120mm, the thickness is not less than 50mm, the sum of the thicknesses of the overlapped parts is less than the thickness of the steel bar truss floor support plate (2), and the difference is not less than 20 mm. And the spliced part of the steel bar truss floor bearing plate (2) after the lap joint is finished is plugged by hard mortar and 5 percent of waterproof powder. The steel bar truss floor bearing plate (2) is plugged with the column wall through hard mortar and 5% of waterproof powder.
Fig. 6 is a schematic structural diagram of a steel connecting member (4) of an assembled steel structure composite floor system according to an embodiment of the present invention. Steel connecting piece (4) are pre-buried in the inside of steel bar truss building carrier plate (2), and the diameter of the afterbody reinforcing bar of steel connecting piece (4) is not less than 12mm to choose for use 12mm, 14mm etc. the length of not bending zone is not less than 35 times reinforcing bar diameter, and bending zone has 90 and buckles, and bending length is not less than 3 times reinforcing bar diameter, and every reinforcing bar interval is not less than 30mm, and the steel sheet thickness of steel connecting piece (4) is not less than reinforcing bar thickness +2 mm.
The installation process of the assembled steel structure combined floor system provided by the embodiment of the invention comprises the following steps:
during installation, the mid-span composite floor slab (25) is manufactured firstly, the studs are welded on the steel beams, profiled steel plates are erected, concrete is poured, after the concrete is finally set, the concrete is transported to a construction site, and the side-span composite floor slab (24) is manufactured according to the same method. The mid-span composite floor (25) is hoisted firstly on the construction site, then the side-span composite floor (24) on the two sides is hoisted, and the connecting parts between the mid-span composite floor (25) and the side-span composite floor (24) are also connected through high-strength bolts.
At the component processing factory, firstly, the steel bar truss floor bearing plate (2) is built, then, the stud is welded, the steel bar truss floor bearing plate (2) in the span is lapped on the flanges of two unequal-width flange steel secondary beams (1), and the unequal-width flange steel secondary beams (1) are connected with the stiffening ribs of the steel frame beam (3) through the connecting plates and the high-strength bolts. After connection is finished, laying steel bar truss floor bearing plates (2) on the left side and the right side, and firstly connecting flanges of the unequal-width flange steel secondary beams (1) at the splicing positions and reserved overhanging connecting bands of the steel bar truss floor bearing plates through high-strength bolts; and then the flange of the steel frame beam (1) is connected with the steel bar truss floor bearing plate (2) through a high-strength bolt.
The steel connecting pieces (4) are embedded inside the steel bar truss floor bearing plate (2), concrete is poured after the templates are supported, and construction of the midspan composite floor slab (25) is completed after final setting of the concrete is completed. The construction process of the side span composite floor slab (24) is consistent with that of the mid-span composite floor slab (25). And after the construction of the composite floor slab is finished, the composite floor slab is transported to a construction site in a vertical mode.
Fig. 7 is a schematic structural diagram of an assembled steel column according to an embodiment of the present invention. At the job site, steel frame roof beam (3) and steel column (5) are through high strength bolt (34), connecting plate (35) installation completion back, the hoist and mount are striden well composite floor (25), the steel secondary beam passes through connecting plate (16) and is connected with steel frame roof beam (3) stiffening rib (32) with high strength bolt (17), then hoist and mount limit stride composite floor (24), connect two steel bar truss building carrier plates through high strength bolt (21), steel bar truss building carrier plate (2) and major structure are connected through high strength bolt (36) to the rethread. And finally, filling hard mortar and 5% of waterproof powder at the splicing part of the steel bar truss floor bearing plate and the gap between the steel bar truss floor bearing plate and the column wall for plugging, and stopping water leakage and water seepage at two positions. And finishing the installation of the assembled steel structure combined floor system. Fig. 9 is a schematic view illustrating the completion of the assembly of an assembled steel structure composite floor system and other members according to an embodiment of the present invention.
In summary, the embodiment of the invention provides an assembled steel structure combined floor system connected by high-strength bolts, aiming at the problem of discontinuous force transfer between precast concrete floors of the existing assembled type middle-sized factory, so as to achieve full assembly connection and no-wet operation on a construction site, and the force transfer between floors is continuous and stable.
The embodiment of the invention provides an assembly type steel structure combined floor system connected through high-strength bolts, aiming at the problem of discontinuous force transfer between prefabricated concrete floors of the existing assembly type middle-factory, so as to achieve full assembly connection on a construction site, and simultaneously, the problem of large or small amount of wet operation which cannot be avoided in the construction process of the existing steel structure can be thoroughly solved. Concrete cast-in-place and maintenance are not needed, so that the construction period is greatly shortened. On the other hand, when the building needs to be dismantled, the floor slab structure system provided by the project can thoroughly solve the problem that the floor slab is difficult to dismantle when the steel structure is dismantled at present. The structural members (including the assembled beams, the columns and the floor) of the structural system can be completely dismantled, and the operation is simple and convenient. The recycling rate of the steel structure building member can be greatly improved, and a large amount of manpower, material resources and time are saved. And because on-site wet operation is avoided, construction waste can be effectively reduced during dismantling, so that the floor structure system of the project has the characteristics of extreme environmental friendliness, has great scientific significance and application prospect, and can bring breakthrough progress in the field of industrialized green buildings.
Those of ordinary skill in the art will understand that: the figures are merely schematic representations of one embodiment, and the blocks or flow diagrams in the figures are not necessarily required to practice the present invention.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for apparatus or system embodiments, since they are substantially similar to method embodiments, they are described in relative terms, as long as they are described in partial descriptions of method embodiments. The above-described embodiments of the apparatus and system are merely illustrative, and the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. An assembled steel structure composite floor system, comprising: the steel truss floor slab comprises flange steel secondary beams (1) with different widths, steel bar truss floor bearing plates (2), steel frame beams (3) and steel connecting pieces (4);
unequal-width flange steel secondary beams (1) and steel bar truss floor bearing plates (2) are transported to a construction site for installation after being integrally prefabricated in a factory, combined floor slabs are formed by the unequal-width flange steel secondary beams (1) and the steel bar truss floor bearing plates (2), the combined floor slabs are connected through pre-buried steel connecting pieces (4) and bolts, the steel connecting pieces (4) stretch into the concrete floor slabs for a certain length, and the unequal-width flange steel secondary beams (1) are connected with the steel bar truss beams (3) through connecting plates and bolts.
2. The system according to claim 1, wherein the unequal-width flange steel secondary beam (1) and the steel bar truss floor deck (2) are connected in an enhanced mode through studs, the composite floor slabs comprise an edge-span composite floor slab and a mid-span composite floor slab, and the connection portion between the mid-span composite floor slab (25) and the edge-span composite floor slab (24) is connected through bolts.
3. System according to claim 1, characterized in that the ratio of the length to the thickness of the overhanging part of the unequal-width flange steel secondary beam (1) does not exceed
fyIndicates the yield strength of the steel.
4. The system according to claim 3, characterized in that one side of the long flange of the unequal-width flange steel secondary beam (1) is welded with studs, the studs are arranged at intervals of 300mm, the other side of the long flange of the unequal-width flange steel secondary beam (1) is provided with bolt holes, and the unequal-width flange steel secondary beam (1) is connected with the steel bar truss floor bearing plate (2) and the unequal-width flange steel secondary beam (1) in the other direction through steel connectors (4) and bolts.
5. The system according to claim 1, characterized in that the unequal-width flange steel secondary beams (1) and the steel frame beams (3) are connected through connecting plates and bolts, and stiffening ribs are arranged at the splicing positions of the steel secondary beam webs of the steel frame beams (3).
6. The system according to claim 1, wherein the overhanging length of the concrete overhanging connection part of the steel bar truss floor support plate (2) along the direction of the secondary beam is not less than 120mm, the thickness is not less than 50mm, the distance between bolt holes arranged on the steel bar truss floor support plate (2) is not less than 3 times the diameter of the bolt and not more than 200mm, the length of another steel bar truss floor support plate (2) overlapped with the overhanging part is not less than 120mm, the thickness is not less than 50mm, the sum of the thicknesses of the overlapped parts is less than the thickness of the steel bar truss floor support plate (2), and the difference is not less than 20 mm.
7. The system according to claim 6, characterized in that the spliced part of the steel bar truss floor bearing plate (2) after the lap joint is finished is plugged by hard mortar and 5% waterproof powder, and the spliced part between the steel bar truss floor bearing plate (2) and the column wall is plugged by hard mortar and 5% waterproof powder.
8. The system according to claim 1, characterized in that the steel connecting piece (4) is pre-buried inside the steel bar truss floor bearing plate (2), the diameter of the tail steel bar of the steel connecting piece (4) is not less than 12mm, the length of the unbent area is not less than 35 times the diameter of the steel bar, the bent area has 90 degrees of bending, the bending length is not less than 3 times the diameter of the steel bar, the distance between every two steel bars is not less than 30mm, and the thickness of the steel plate of the steel connecting piece (4) is not less than +2 mm.
9. A method of installing an assembled steel structure composite floor system according to any one of claims 1 to 8, comprising:
firstly, manufacturing a mid-span composite floor slab 25, welding studs on steel beams, erecting profiled steel plates, pouring concrete, transporting to a construction site after the concrete is finally set, and manufacturing a side-span composite floor slab 24 according to the same method; firstly hoisting a mid-span composite floor slab 25 and then hoisting side-span composite floor slabs 24 on two sides in a construction site, wherein the connection parts between the mid-span composite floor slab 25 and the side-span composite floor slabs 24 are connected through bolts;
in a component processing factory, firstly, steel bar truss floor bearing plates (2) are erected, studs are welded, the steel bar truss floor bearing plates (2) in the span are lapped on flanges of two unequal-width flange steel secondary beams (1), the unequal-width flange steel secondary beams (1) are connected with stiffening ribs of steel frame beams (3) through connecting plates and bolts, the steel bar truss floor bearing plates (2) on the left side and the right side are laid after connection is finished, and flanges of unequal-width flange steel secondary beams (1) at the splicing positions and reserved extending connecting bands of the steel bar truss floor bearing plates (2) are connected through bolts; connecting the flange of the steel frame beam (1) with the steel bar truss floor bearing plate (2) through bolts;
the steel connecting pieces (4) are pre-buried inside the steel bar truss floor bearing plate (2), concrete is poured after the templates are supported, construction of the mid-span composite floor slab (25) is completed after final setting of the concrete is completed, the construction process of the side-span composite floor slab (24) is consistent with that of the mid-span composite floor slab (25), and the composite floor slab is transported to a construction site after construction is completed;
at the construction site, the steel frame beam (3) and the steel column (5) pass through the bolt (34), after the installation of connecting plate (35), the hoist and mount span composite floor (25), the steel secondary beam passes through connecting plate (16) and is connected with steel frame beam (3) stiffening rib (32) with bolt (17), then hoist and mount the limit and stride composite floor (24), connect two steel bar truss building carrier plates through bolt (21), rethread bolt (36) connection steel bar truss building carrier plate (2) and major structure, at last at steel bar truss building carrier plate concatenation department and with column wall clearance fill hard mortar and waterproof powder and carry out the shutoff, this moment assembled steel structure composite floor system installation is accomplished.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110764456.5A CN113445650B (en) | 2021-07-06 | 2021-07-06 | Assembled steel structure combined floor system and installation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110764456.5A CN113445650B (en) | 2021-07-06 | 2021-07-06 | Assembled steel structure combined floor system and installation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113445650A true CN113445650A (en) | 2021-09-28 |
| CN113445650B CN113445650B (en) | 2023-01-10 |
Family
ID=77815206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110764456.5A Active CN113445650B (en) | 2021-07-06 | 2021-07-06 | Assembled steel structure combined floor system and installation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113445650B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112282052A (en) * | 2020-10-28 | 2021-01-29 | 兰州理工大学 | Double-thread steel column head connection type steel-reinforced floor support plate-beam-column system and using method thereof |
| CN117166661A (en) * | 2023-09-07 | 2023-12-05 | 山东金旭钢构工程有限公司 | Steel construction and assembled steel construction floor |
| CN117306756A (en) * | 2023-10-07 | 2023-12-29 | 北京建筑大学 | Floor structure adapting to expansion effect, construction method and steel structure system |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160305077A1 (en) * | 2013-12-11 | 2016-10-20 | Quickcell Technology Pty Ltd | Precast concrete beam |
| CN106088434A (en) * | 2016-08-25 | 2016-11-09 | 中冶建筑研究总院有限公司 | A kind of assembling type steel structure overlapped hollow floor system and construction method thereof |
| CN209099600U (en) * | 2018-11-22 | 2019-07-12 | 海南大学 | A kind of assembled steel bar concrete floor structure |
| CN210439527U (en) * | 2019-05-23 | 2020-05-01 | 南京耀丰新材料科技有限公司 | Heat-preservation and heat-insulation color steel plate steel bar truss floor support plate |
| CN111411721A (en) * | 2020-03-30 | 2020-07-14 | 北京工业大学 | Assembly type prefabricated floor slab secondary beam combined component |
| CN111411724A (en) * | 2020-03-30 | 2020-07-14 | 北京工业大学 | Steel beam-concrete composite floor slab combined assembly system |
| CN111411687A (en) * | 2020-03-30 | 2020-07-14 | 北京工业大学 | Novel assembly system |
| CN211396208U (en) * | 2019-07-19 | 2020-09-01 | 中耕耘成建筑科技(江苏)有限公司 | Green type coincide floor's mosaic structure |
| CN212176238U (en) * | 2019-12-10 | 2020-12-18 | 河南远大可持续建筑科技有限公司 | Assembly type roof system |
| CN212897073U (en) * | 2020-07-23 | 2021-04-06 | 广东建邦兴业集团有限公司 | Assembled steel bar truss building carrier plate |
-
2021
- 2021-07-06 CN CN202110764456.5A patent/CN113445650B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160305077A1 (en) * | 2013-12-11 | 2016-10-20 | Quickcell Technology Pty Ltd | Precast concrete beam |
| CN106088434A (en) * | 2016-08-25 | 2016-11-09 | 中冶建筑研究总院有限公司 | A kind of assembling type steel structure overlapped hollow floor system and construction method thereof |
| CN209099600U (en) * | 2018-11-22 | 2019-07-12 | 海南大学 | A kind of assembled steel bar concrete floor structure |
| CN210439527U (en) * | 2019-05-23 | 2020-05-01 | 南京耀丰新材料科技有限公司 | Heat-preservation and heat-insulation color steel plate steel bar truss floor support plate |
| CN211396208U (en) * | 2019-07-19 | 2020-09-01 | 中耕耘成建筑科技(江苏)有限公司 | Green type coincide floor's mosaic structure |
| CN212176238U (en) * | 2019-12-10 | 2020-12-18 | 河南远大可持续建筑科技有限公司 | Assembly type roof system |
| CN111411721A (en) * | 2020-03-30 | 2020-07-14 | 北京工业大学 | Assembly type prefabricated floor slab secondary beam combined component |
| CN111411724A (en) * | 2020-03-30 | 2020-07-14 | 北京工业大学 | Steel beam-concrete composite floor slab combined assembly system |
| CN111411687A (en) * | 2020-03-30 | 2020-07-14 | 北京工业大学 | Novel assembly system |
| CN212897073U (en) * | 2020-07-23 | 2021-04-06 | 广东建邦兴业集团有限公司 | Assembled steel bar truss building carrier plate |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112282052A (en) * | 2020-10-28 | 2021-01-29 | 兰州理工大学 | Double-thread steel column head connection type steel-reinforced floor support plate-beam-column system and using method thereof |
| CN112282052B (en) * | 2020-10-28 | 2022-06-10 | 兰州理工大学 | Double-thread steel column head connection type steel reinforced floor bearing plate-beam-column system and using method thereof |
| CN117166661A (en) * | 2023-09-07 | 2023-12-05 | 山东金旭钢构工程有限公司 | Steel construction and assembled steel construction floor |
| CN117166661B (en) * | 2023-09-07 | 2024-03-19 | 山东金旭钢构工程有限公司 | Steel construction and assembled steel construction floor |
| CN117306756A (en) * | 2023-10-07 | 2023-12-29 | 北京建筑大学 | Floor structure adapting to expansion effect, construction method and steel structure system |
| CN117306756B (en) * | 2023-10-07 | 2024-06-11 | 北京建筑大学 | Floor structure adapting to expansion effect, construction method and steel structure system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113445650B (en) | 2023-01-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113445650B (en) | Assembled steel structure combined floor system and installation method thereof | |
| EP3263795B1 (en) | Composite structural wall and method of construction thereof | |
| CN112832416A (en) | Assembled RCS frame-RECC shear force wall mixed structure system | |
| KR101225661B1 (en) | Concrete shear key strengthened with steel cover plate and tension member and the construction method therewith | |
| CN210288680U (en) | Assembled standard layer module | |
| EP3168380A1 (en) | Pillar for supporting a modular structure, beam intended to be supported on pillars of this type, and structure comprising said pillars and beams | |
| CN111749365A (en) | Assembly type composite wall based on H-shaped steel and construction method thereof | |
| CN108571169B (en) | Construction method for factory prefabricated steel concrete superposed shear wall assembly type building | |
| CN110656716A (en) | Building structure with prefabricated wall boards connected in dense ribs and construction method of building structure | |
| CN114232867A (en) | One-way superimposed sheet post-cast strip node structure and construction method thereof | |
| CN111749364B (en) | Assembled composite wall based on C-shaped steel and construction method thereof | |
| CN112832415A (en) | Partially-coated steel-concrete combined shear wall member | |
| CN218643645U (en) | Full-assembly type reinforced concrete floor connected by steel-concrete combined structure | |
| CN218437691U (en) | Light-duty assembled superstructure system for reinforced concrete frame | |
| CN111173030A (en) | Prefabricated sandwich side wall and prefabricated superposed bottom plate connecting node structure and construction method thereof | |
| CN111101645A (en) | Self-in-place reinforced precast concrete wallboard, connecting structure and construction method | |
| CN212836086U (en) | Assembled composite wall based on H shaped steel | |
| CN212772980U (en) | Assembled composite wall based on C shaped steel | |
| CN210529929U (en) | Beam column connecting node with replaceable energy-consuming steel bars | |
| CN209891381U (en) | Building structure | |
| CN112982692A (en) | One-way superimposed sheet joint connecting structure and construction method | |
| CN111877621A (en) | Precast concrete superstructure slab joint H shaped steel connected node | |
| CN213868502U (en) | Assembled steel construction floor falls board node structure | |
| CN214785031U (en) | Partially-coated steel-concrete combined shear wall member | |
| CN221236235U (en) | Prefabricated wall and prefabricated wall connection node |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |