CN110777998A - Building floor and combined floor system - Google Patents
Building floor and combined floor system Download PDFInfo
- Publication number
- CN110777998A CN110777998A CN201910987302.5A CN201910987302A CN110777998A CN 110777998 A CN110777998 A CN 110777998A CN 201910987302 A CN201910987302 A CN 201910987302A CN 110777998 A CN110777998 A CN 110777998A
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- China
- Prior art keywords
- plate
- precast concrete
- edge
- top surface
- building 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
- 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
- E04B5/17—Floor structures partly formed in situ
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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
- E04B5/17—Floor structures partly formed in situ
- E04B5/23—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated
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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
- E04B5/17—Floor structures partly formed in situ
- E04B5/23—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated
- E04B5/26—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated with filling members between the beams
Abstract
The invention relates to the technical field of building floor slabs, in particular to a building floor slab and a composite floor slab, which comprise a precast concrete slab, wherein bottom steel bars are embedded in the bottom of the precast concrete slab, a plurality of edge reinforcing pieces which are fixed with the bottom steel bars and are positioned at the edge of the precast concrete slab are also embedded in the precast concrete slab, and the boundary connection strength is better.
Description
Technical Field
The invention relates to the technical field of building floor slabs, in particular to a building floor slab and a composite floor system.
Background
In the assembly type building structure system, the floor system occupies an important position, not only bears vertical load, but also plays a role in transmitting horizontal load, and plays a vital role in the integrity of the assembly type building and the shock resistance of the assembly type building. At present, precast concrete floor systems are commonly adopted in assembly type building engineering, and SP hollow plates, double T plates, truss reinforced concrete composite plates and the like are commonly used, have wide application range and can be used for buildings such as schools, markets, plants, warehouses and the like; the double-T plate has larger span and is mainly used for large-space buildings such as industrial plants, markets and the like; the truss reinforced concrete composite slab is mainly used for assembly type civil residential buildings. The truss reinforced concrete composite slab has the following defects: the truss reinforcing steel bars are processed by adopting professional equipment, and the web member reinforcing steel bars only play a mechanical role in construction specialties, so that labor waste and material waste are caused; the unsupported span in the construction stage is small, the unsupported construction is difficult to implement, and a large amount of temporary construction measure cost is wasted; the gluten needs all to be in the on-the-spot ligature, and the equal on-the-spot pouring of integral structure's coincide layer concrete, and construction work load is big now, construction progress is slow, unfavorable implementation green construction. The Chinese patent with the publication number of 101173542A discloses a bidirectional steel-laminated plate concrete composite floor, and relates to a novel large-span floor structure, wherein the bidirectional steel-laminated plate concrete composite floor consists of cross steel beams, precast slabs and post-cast layer concrete, and the cross steel beams are I-shaped section or box section steel beams; the precast slabs are common reinforced concrete slabs or prestressed concrete slabs, are supported on the upper flanges of the crossed steel beams and cover the grids among the steel beams; the post-cast layer concrete is concrete poured above the precast slabs and the steel beams, so that the problems of large in-situ pouring and wet operation amount exist, in addition, the integrity of the structure is not good enough, and the connection capacity of the floor slab boundary is not good enough.
Disclosure of Invention
The invention aims to provide a building floor with better boundary connection strength.
The technical purpose of the invention is realized by the following technical scheme: the building floor slab comprises a precast concrete slab, bottom reinforcing steel bars are embedded in the bottom of the precast concrete slab, and a plurality of edge reinforcing parts which are fixed with the bottom reinforcing steel bars and are positioned at the edge of the precast concrete slab are also embedded in the precast concrete slab.
Preferably, the edge reinforcement includes a bottom reinforcement flat plate embedded in the bottom of the precast concrete slab and a reinforcement vertical plate fixedly connected to the bottom reinforcement flat plate and extending upward, and at least a portion of the reinforcement vertical plate is embedded in the edge portion of the precast concrete slab.
Preferably, the edge reinforcement is welded to the bottom reinforcement.
Preferably, the bottom surface of the bottom-flat reinforcing plate is exposed to the bottom of the precast concrete plate and is coplanar with the bottom surface portion of the precast concrete plate located around the bottom-flat reinforcing plate.
Preferably, the precast concrete slab has a middle top surface of a middle body portion having a height greater than that of a lower rim top surface among the rim portion top surfaces, and the precast concrete slab forms a lower drop height groove above the lower rim top surface in a region having a height difference between the middle top surface and the lower rim top surface.
Preferably, the height of the top surface of the reinforcing vertical plate is greater than the height of the top surface of the low-level edge and less than the height of the middle top surface.
Preferably, at least 90% or more of the projection of the reinforcing longitudinal plate in the vertical projection plane is located in the projection of the edge part of the precast concrete plate in the vertical projection plane.
The invention aims to provide a building floor with better integrity.
The technical purpose of the invention is realized by the following technical scheme: the combined floor comprises steel beams, wherein the building floor slabs are laid on the steel beams, space spaces are arranged between the adjacent building floor slabs at intervals and are reserved above the crossed steel beam bodies, and cast-in-place concrete capable of filling the low-level fall grooves and the space spaces is poured between the adjacent building floor slabs.
Preferably, shear connectors welded to the steel beams are embedded in the portions of the cast-in-place concrete in the separation spaces.
Preferably, the bottom reinforcing plate is welded to the steel beam.
The invention has the beneficial effects that: the building floor slab has better structural strength, and the boundary connection capacity is improved;
the floor system has better integrity, only needs to be cast on site at the position of the steel beam and the butt joint of the plates, has less wet operation amount, higher construction efficiency and correspondingly improved safety.
Drawings
Fig. 1 is a schematic perspective view of embodiment 1 of the present invention;
fig. 2 is a schematic perspective view of an edge reinforcement according to embodiment 1 of the present invention;
FIG. 3 is a schematic perspective view of a structure of example 2 of the present invention without filling cast-in-place concrete;
FIG. 4 is a top view of FIG. 3;
FIG. 5 is a cross-sectional view taken along line D-D of FIG. 4;
fig. 6 is a schematic perspective view of the cast-in-place concrete filled in fig. 5.
In the figure, 1, precast concrete plates, 2, bottom steel bars, 3, edge reinforcements, 31, bottom reinforced flat plates, 32, reinforced longitudinal plates, 1a, middle top surfaces, 1b, low-level edge top surfaces, 1c, low-level drop grooves, 4, steel beams, 40, separation spaces, c, cast-in-place concrete, 41 and shear connectors.
Detailed Description
The following specific examples are given by way of illustration only and not by way of limitation, and it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made in the examples without inventive faculty, and yet still be protected by the scope of the claims.
Example 1, as shown in fig. 1 and 2, a building floor slab, including precast concrete slab 1, which is widely used at present, is a precast concrete precast slab manufactured and formed in a precast yard, and is directly transported to a construction site for installation, so called precast slab, where the precast concrete slab 1 is a precast slab, and the precast concrete slab 1 is formed by concrete casting, and steel bars are originally arranged during casting, as in the prior art, so that the precast concrete slab 1 is also the basic structure of concrete and steel bars, for example, a bottom steel bar 2 is embedded in the bottom of the precast concrete slab 1, but the improvement point of the present invention is that a plurality of edge reinforcements 3 fixed to the bottom steel bar 2 and located at the edge portions of the precast concrete slab 1 are embedded in the precast concrete slab 1, so that the structural strength of the boundary is higher, and when cast concrete in situ, the connection ability on border is better, and present steel-made structure reinforcement can be adopted to border reinforcement 3, and this application provides a further optimized scheme: the edge reinforcement 3 comprises a bottom reinforcement flat plate 31 embedded in the bottom of the precast concrete slab 1 and a reinforcement longitudinal plate 32 fixedly connected to the bottom reinforcement flat plate 31 and extending upwards, the bottom reinforcement flat plate 31 can be a rectangular steel plate, the reinforcement longitudinal plate 32 can also be a rectangular steel plate, the bottom reinforcement flat plate 31 and the reinforcement longitudinal plate 32 can be connected and fixed through welding or integral forming, the plate surface of the reinforcement longitudinal plate 32 is preferably perpendicular to the plate surface of the bottom reinforcement flat plate 31 and parallel to one group of opposite edges of the bottom reinforcement flat plate 31 and is located at a position between the two edges and close to the middle, and an inverted T-shaped structure can be formed. The longitudinal extension direction of the bottom reinforcing flat plate 31 is as uniform as possible as the extension direction of the edge of the precast concrete slab 1.
At least a part of the longitudinal reinforcing plate 32 may be embedded in the edge of the precast concrete slab 1, that is, the longitudinal reinforcing plate 32 is not necessarily embedded in the precast concrete slab 1, and actually, a part of the longitudinal reinforcing plate 32 exposed outside the precast concrete slab 1 is preferable because the structure of the longitudinal reinforcing plate 32 can be utilized by cast-in-place concrete when a floor system is subsequently manufactured and installed.
Further, the edge reinforcement 3 is welded to the bottom reinforcement 2, the bottom reinforcement 2 may be welded to the bottom reinforcement flat plate 31, or may be welded to the reinforcement longitudinal plate 32, or may be welded to the bottom reinforcement flat plate 31 and the reinforcement longitudinal plate 32 at the same time, for example, the bottom reinforcement 2 may be welded to a portion of the bottom reinforcement flat plate 31 fixedly connected to the reinforcement longitudinal plate 32, and further, preferably, in an inverted T-shaped structure formed by the bottom reinforcement flat plate 31 and the reinforcement longitudinal plate 32, a bottom reinforcement 2 is welded to each of right and left right-angled portions of a connection between the bottom reinforcement flat plate 31 and the reinforcement longitudinal plate 32, and both the two bottom reinforcements 2 may be welded to the bottom reinforcement flat plate 31 and the reinforcement longitudinal plate 32.
The bottom surface of the bottom flat reinforced plate 31 is exposed out of the bottom of the precast concrete plate 1 and forms a coplanar state with the bottom surface part of the precast concrete plate 1 around the bottom flat reinforced plate 31, that is, after the bottom flat reinforced plate 31 is embedded in the bottom of the precast concrete plate 1, the bottom surface of the bottom flat reinforced plate 31 and the bottom surface of the part of the precast concrete plate 1 where the bottom flat reinforced plate 31 is not embedded form a complete bottom supporting plane, although the coplanar state is a more ideal state and allows deviation, but the integrity and the flatness of the whole bottom plane under the condition that the bottom flat reinforced plate 31 is embedded in the bottom of the precast concrete plate 1 are ensured as much as possible, and the support performance of the whole structure and the structural stability after the bottom flat reinforced plate 31 is installed in a floor are greatly facilitated.
Specifically, the overall profile of the precast concrete panel 1 is designed in a rectangular shape, but the structure of the upper portion thereof is redesigned: the height of the middle top surface 1a of the middle main body part of the precast concrete plate 1 is greater than the height of the low level edge top surface 1b of the edge part top surface, the precast concrete plate 1 forms a low level drop groove 1c above the low level edge top surface 1b in the area with the height difference between the middle top surface 1a and the low level edge top surface 1b, usually, the top surface of the precast concrete plate 1 is a flat surface with the same height, but in the application, the top surface of the edge part is further optimized to be redesigned, namely, a part of the top surface of the edge part is downwards collapsed for a certain distance, namely, the low level edge top surface 1b, because of the low level drop groove 1c, two step parts are formed at the position, and the design is such that, when in-situ cast floor slab concrete is carried out in the subsequent floor slab installation process, the contact area becomes large and the connection capability of the boundary becomes strong. Furthermore, the height of the top surface of the reinforced longitudinal plate 32 is greater than the height of the low-position edge top surface 1b and less than the height of the middle top surface 1a, that is, a part of the reinforced longitudinal plate 32 in the vertical direction is exposed outside the precast concrete plate 1 beyond the edge part, but the reinforced longitudinal plate can be cast and buried by cast-in-place concrete when the cast-in-place concrete is cast and buried, so that a better reinforcing effect is achieved; preferably, at least 90% of the projection of the longitudinal reinforcing plate 32 in the vertical projection plane is located in the projection of the edge part of the precast concrete slab 1 in the vertical projection plane, and the design is mainly to ensure that the longitudinal reinforcing plate 32 does not exceed the precast concrete slab 1 in the horizontal direction as much as possible, so that the structural stability between the longitudinal reinforcing plate 32 and the precast concrete slab 1 is ensured as much as possible.
The construction floor slab can be manufactured by firstly laying reinforcing steel bars, welding the edge reinforcing parts 3 on the reinforcing steel bars in advance, and then pouring concrete to form the precast concrete slab 1 with a site for follow-up construction.
Example 2, as shown in fig. 3, 4, 5 and 6, a composite floor system, which is applied to the floor system of example 1, includes steel beams 4, the steel beams 4 may adopt the existing crossed steel beam structure, a plurality of the floor systems of example 1 are laid on the steel beams 4, and may be further preferably arranged in a rectangular array, the adjacent floor systems are spaced apart from each other and leave spacing spaces 40, the spacing spaces 40 are located above the beam bodies of the crossed steel beams 4, cast-in-place concrete c capable of being filled into the respective low-level drop grooves 1c and the spacing spaces 40 is poured between the adjacent floor systems, the spacing spaces 40 between the adjacent floor systems are filled with the low-level drop grooves 1c of the respective floor systems by the cast-in-place concrete c, and the top surface of the cast-in-place concrete c should be level with the height of the middle top surface 1a of the middle body part of the precast concrete slab 1, therefore, the precast concrete plate 1 and the cast-in-place concrete c can be integrated into a whole floor system to form a complete structure, and the cross section between the adjacent building floor slabs of the cast-in-place concrete c forms a T-shaped stable structure.
The shear connectors 41 welded to the steel beams 4 are embedded in the portions of the cast-in-place concrete c located in the separation spaces 40, and the shear connectors 41 may be of the existing structures such as studs and channel steel. The bottom flat reinforcing plate 31 is welded to the steel beam 4.
When the floor system is manufactured, the shear connector 41 can be welded on the steel beam firstly on the steel beam, then the building floor slab is placed on the steel beam 4, the bottom flat reinforcing plate 31 and the reinforcing steel bar 4 are welded and fixed, and the pouring work of the cast-in-place concrete c is preferably carried out.
In addition, some positioning pins can be arranged, and corresponding positioning holes are formed in the steel beam and the edge of the building floor slab, so that the building floor slab can be conveniently placed and positioned on the steel beam.
While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and various equivalent modifications and substitutions can be easily made by those skilled in the art within the technical scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A building floor, characterized in that: the concrete slab comprises a precast concrete slab (1), bottom reinforcing steel bars (2) are embedded in the bottom of the precast concrete slab (1), and a plurality of edge reinforcing parts (3) which are fixed with the bottom reinforcing steel bars (2) and are positioned at the edge of the precast concrete slab (1) are also embedded in the precast concrete slab (1).
2. A building floor according to claim 1, wherein: the edge reinforcement (3) comprises a bottom reinforcement flat plate (31) embedded at the bottom of the precast concrete plate (1) and a reinforcement longitudinal plate (32) fixedly connected to the bottom reinforcement flat plate (31) and extending upwards, and at least one part of the reinforcement longitudinal plate (32) is embedded in the edge part of the precast concrete plate (1).
3. A building floor according to claim 2, wherein: the edge reinforcing piece (3) is welded on the bottom reinforcing steel bar (2).
4. A building floor according to claim 2, wherein: the bottom surface of the bottom flat reinforcing plate (31) is exposed out of the bottom of the precast concrete plate (1) and is in a coplanar state with the bottom surface part of the precast concrete plate (1) around the bottom flat reinforcing plate (31).
5. A building floor according to claim 2, wherein: the height of the middle top surface (1 a) of the middle main body part of the precast concrete plate (1) is larger than that of the low-level edge top surface (1 b) in the edge part top surfaces, and the precast concrete plate (1) forms a low-level drop height groove (1 c) above the low-level edge top surface (1 b) in an area with a height difference between the middle top surface (1 a) and the low-level edge top surface (1 b).
6. A building floor according to claim 5, wherein: the height of the top surface of the reinforcing longitudinal plate (32) is greater than that of the low-position edge top surface (1 b) and less than that of the middle top surface (1 a).
7. A building floor according to claim 1, wherein: at least more than 90% of the projection of the reinforced longitudinal plate (32) in the vertical projection plane is positioned in the projection of the edge part of the precast concrete plate (1) in the vertical projection plane.
8. The utility model provides a composite floor, includes girder steel (4), its characterized in that: the steel beams (4) are paved with a plurality of building floor slabs according to any one of claims 5 to 7, spacing spaces (40) are arranged between adjacent building floor slabs at intervals, the spacing spaces (40) are positioned above the beam bodies of the crossed steel beams (4), and cast-in-place concrete (c) capable of being filled in the low-level drop grooves (1 c) and the spacing spaces (40) is poured between the adjacent building floor slabs.
9. A modular floor according to claim 8, characterised in that: and shear connectors (41) welded on the steel beams (4) are embedded in the parts, located in the interval spaces (40), of the cast-in-place concrete (c).
10. A modular floor according to claim 8, characterised in that: the bottom flat reinforcing plate (31) is welded on the steel beam (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910987302.5A CN110777998A (en) | 2019-10-17 | 2019-10-17 | Building floor and combined floor system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910987302.5A CN110777998A (en) | 2019-10-17 | 2019-10-17 | Building floor and combined floor system |
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| Publication Number | Publication Date |
|---|---|
| CN110777998A true CN110777998A (en) | 2020-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910987302.5A Pending CN110777998A (en) | 2019-10-17 | 2019-10-17 | Building floor and combined floor system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111705995A (en) * | 2020-06-05 | 2020-09-25 | 威海金象实业有限公司 | Cast-in-place integrated plate set |
| CN113719007A (en) * | 2021-09-15 | 2021-11-30 | 浙江大东吴建筑科技有限公司 | Connecting structure and connecting method for local laminated slab and steel bar truss floor bearing plate lowering plate |
-
2019
- 2019-10-17 CN CN201910987302.5A patent/CN110777998A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111705995A (en) * | 2020-06-05 | 2020-09-25 | 威海金象实业有限公司 | Cast-in-place integrated plate set |
| CN113719007A (en) * | 2021-09-15 | 2021-11-30 | 浙江大东吴建筑科技有限公司 | Connecting structure and connecting method for local laminated slab and steel bar truss floor bearing plate lowering plate |
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