CN113846789B - Assembled concrete bidirectional ribbed floor structure and construction method thereof - Google Patents

Assembled concrete bidirectional ribbed floor structure and construction method thereof Download PDF

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Publication number
CN113846789B
CN113846789B CN202111281521.5A CN202111281521A CN113846789B CN 113846789 B CN113846789 B CN 113846789B CN 202111281521 A CN202111281521 A CN 202111281521A CN 113846789 B CN113846789 B CN 113846789B
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keel beam
formwork
longitudinal
transverse
main keel
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CN113846789A (en
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闫丽颖
邢妍
张立山
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Hebei Normal University of Science and Technology
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Hebei Normal University of Science and Technology
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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
    • E04B5/18—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly cast between filling members
    • E04B5/21—Cross-ribbed floors
    • 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
    • E04B5/326—Floor structures wholly cast in situ with or without form units or reinforcements with hollow filling elements
    • 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
    • E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders
    • E04C5/0636—Three-dimensional reinforcing mats composed of reinforcing elements laying in two or more parallel planes and connected by separate reinforcing parts
    • 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
    • E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
    • E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
    • E04G11/40—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings for coffered or ribbed ceilings
    • 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
    • E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • Bridges Or Land Bridges (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)

Abstract

An assembled concrete two-way dense-rib floor structure and a construction method thereof, wherein the assembled concrete two-way dense-rib floor structure comprises a bottom plate, a main keel beam, a secondary keel beam, a supporting frame, a formwork and a top plate; the secondary keel beams and the main keel beams enclose a group of rectangular unit cells; the bottom plate is provided with a positioning component; the positioning assembly comprises a pre-buried screw and a positioning cone; the positioning cone is in threaded connection with the embedded screw; the outer side wall of the positioning cone is provided with a supporting plate; the support frame is arranged in the rectangular unit cell; supporting sheets are respectively connected to the four internal corners of the supporting frame; the supporting sheet is provided with a through hole; the positioning cone penetrates through the through hole; the shuttering is arranged in a group of rectangular unit cells; the upper end of the positioning component is inserted into the formwork; first connecting ribs are arranged in the main keel beam at intervals; second connecting ribs are arranged in the secondary keel beam at intervals; the top plate is poured on the main keel beam, the secondary keel beam and the top of the formwork; the top plate is internally provided with a longitudinal hidden rib beam and a transverse hidden rib beam. The invention solves the technical problems of large structural mass, inconvenient installation, transportation and low construction efficiency of the traditional multi-ribbed floor.

Description

Assembled concrete bidirectional ribbed floor structure and construction method thereof
Technical Field
The invention belongs to the technical field of construction engineering, and particularly relates to an assembled concrete bidirectional ribbed floor structure and a construction method thereof.
Background
The dense rib floor slab is a one-way or two-way rib floor slab with the rib distance less than or equal to 1.5 m, the two-way dense rib floor slab has better stress performance due to the two-way common load bearing effect, and the building engineering is a part of the construction engineering. The existing multi-ribbed floor system has good integrity in places with large load and large span, such as large-span floor slabs and roof slabs used for various buildings or soil-covered roof slabs of an underground garage, and the like.
Disclosure of Invention
The invention aims to provide an assembled concrete bidirectional multi-ribbed floor structure and a construction method thereof, and aims to solve the technical problems that the traditional multi-ribbed floor structure is high in mass and large in floor load, influences the stability effect of a floor, is inconvenient to install and carry and influences the field construction efficiency.
In order to achieve the purpose, the invention adopts the following technical scheme.
An assembled concrete two-way dense-rib floor structure comprises a bottom plate, a main keel beam and a secondary keel beam; also comprises a supporting frame, a mould shell and a top plate; the main keel beams are arranged in a group and are arranged at intervals along the transverse direction; the secondary keel beams are arranged at intervals along the longitudinal direction and form a group of rectangular unit grids with the main keel beams in an enclosing mode; positioning components are respectively arranged at the four corner positions of the bottom plate, which are close to the rectangular unit grids; the positioning assembly comprises a pre-buried screw and a positioning cone; the lower end of the embedded screw is embedded in the bottom plate, and a nut is connected to the embedded screw; the bottom of the positioning cone is provided with a threaded blind hole, and the threaded blind hole is sleeved on the upper part of the embedded screw and is in threaded connection with the embedded screw; an annular supporting plate is arranged on the outer side wall of the positioning cone; the supporting frames are provided with a group and correspondingly arranged in the rectangular unit grids; each supporting frame is rectangular and annular, and supporting sheets are connected to four internal corners of each supporting frame respectively; the supporting sheet is provided with a through hole at the position corresponding to the embedded screw; the positioning cones correspondingly penetrate through the through holes, and the supporting plate is supported and connected at the bottom of the supporting sheet; the formwork is provided with a group of formworks which are correspondingly arranged in the group of rectangular unit cells, the bottom of the formwork is supported on the supporting frame, and the top of the formwork is flush with the tops of the main keel beam and the secondary keel beam; the upper end of the positioning component is inserted into the formwork; first connecting ribs are arranged in the main keel beam at intervals, and the upper ends of the first connecting ribs exceed the top surface of the main keel beam; second connecting ribs are arranged in the secondary keel beam at intervals, and the upper ends of the second connecting ribs exceed the top surface of the secondary keel beam; the top plate is poured on the top of the main keel beam, the secondary keel beam and the formwork; a longitudinal hidden rib beam is arranged in the top plate and at the position corresponding to the main keel beam; and a transverse hidden rib beam is arranged in the top plate and at the position corresponding to the secondary keel beam.
Preferably, a longitudinal steel reinforcement framework is arranged in the longitudinal hidden rib beam; four longitudinal steel reinforcement frameworks are arranged in a rectangular shape; the longitudinal steel bar framework comprises longitudinal bars and stirrups; four longitudinal bars are arranged in a rectangular shape; the four longitudinal bars are fixedly connected by the stirrups.
Preferably, a transverse steel reinforcement framework is arranged in the transverse hidden rib beam; four transverse steel bar frameworks are arranged in a rectangular shape; the transverse steel bar framework comprises a transverse steel bar and a stirrup; four transverse ribs are arranged in a rectangular shape; the four longitudinal bars are fixedly connected by the stirrups; the transverse steel reinforcement framework and the longitudinal steel reinforcement framework are horizontally arranged correspondingly, and the transverse steel reinforcement framework penetrates through the longitudinal steel reinforcement framework at the position where the transverse steel reinforcement framework is intersected with the longitudinal steel reinforcement framework.
Preferably, supporting steel bars are arranged at the crossed positions of the transverse steel bar framework and the longitudinal steel bar framework; the support steel bars are connected with the longitudinal steel bar framework.
Preferably, the upper end of the first connecting rib is horizontally bent to form a first upper anchoring section; the first upper anchoring section extends into the top plate; the lower end of the first connecting rib is horizontally bent to form a first lower anchoring section; the upper end of the second connecting rib is horizontally bent to form a second upper anchoring section; the second upper anchoring section extends into the top plate; and the lower end of the second connecting rib is horizontally bent to form a second lower anchoring section.
Preferably, the formwork is a DLM lightweight cellular polystyrene foam infill hollow slab.
Preferably, the gaps between the side edges at the periphery of the rectangular unit cell and the formwork are filled with filling strips.
A construction method of an assembled concrete bidirectional ribbed floor structure is characterized in that the method comprises the following steps.
Step one, erecting a formwork and integrally pouring a bottom plate, a main keel beam and a secondary keel beam; before the bottom plate is poured, a positioning assembly is buried on the bottom plate and at a designed position.
And step two, after the concrete strength of the bottom plate, the main keel beam and the secondary keel beam reaches the design strength, removing the formwork.
And step three, mounting a support frame, and connecting the support frame with the positioning assembly.
And step four, installing the formwork, and filling strips in gaps between the peripheral side edges of the rectangular unit grids and the formwork.
And fifthly, erecting a template of the top plate, and pouring concrete of the top plate.
And sixthly, removing the template after the concrete of the top plate is cured to the designed strength, and finishing the construction.
Preferably, in the first step, before the main keel beam and the secondary keel beam are poured, reinforcing steel bars of the main keel beam and the secondary keel beam are bound, and a first connecting rib and a second connecting rib are arranged at the designed positions, so that the lower end of the first connecting rib is connected with the reinforcing steel bars of the main keel beam, and the lower end of the second connecting rib is connected with the reinforcing steel bars of the secondary keel beam; and step five, binding the transverse steel reinforcement framework, the longitudinal steel reinforcement framework and the supporting steel bars before pouring the concrete of the top plate, connecting the upper ends of the first connecting bars with the longitudinal steel reinforcement framework at the corresponding position, and connecting the upper ends of the second connecting bars with the transverse steel reinforcement framework at the corresponding position.
Compared with the prior art, the invention has the following characteristics and beneficial effects.
1. The integral composite floor slab is formed by arranging the main keel beam, the secondary keel beam, the formwork, the bottom plate and the top plate, the formwork is filled in the main keel beam and the secondary keel beam, the embedded screw is arranged on the bottom plate, the embedded screw and the nut are used for locking, the positioning nail is then in threaded connection with the mounting bolt, the support grid frame is placed in a grid formed by the main keel beam and the secondary keel beam, the positioning nail is inserted into the trepanning hole, the support sheet is fixed by the positioning pull ring, the height of the support grid frame is determined by adjusting the height of the positioning nail on the mounting bolt, when the integral composite floor slab is placed in the formwork, the top end of the positioning nail penetrates into the formwork, the formwork is fixed, the setting height of the formwork is conveniently adjusted, the integral load of the composite floor slab is reduced by the formwork, and the pouring stability of the floor slab is improved.
2. According to the invention, the hollow composite slab is assembled by the tops of the main keel beam and the secondary keel beam, the longitudinal rib beam and the transverse rib beam are arranged in the hollow composite slab, and both the longitudinal rib beam and the transverse rib beam are made of reinforced steel materials, so that the concrete can be conveniently cast and vibrated compactly on the top plate on site, the cast-in-place construction complexity is low, and the construction efficiency is favorably improved.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a top plate, a main keel beam and a secondary keel beam in the assembled concrete bidirectional multi-ribbed floor structure after being separated.
Fig. 2 is an enlarged schematic view of point a in fig. 1.
Fig. 3 is a schematic view of a connection structure of the positioning assembly and the base plate according to the present invention.
Fig. 4 is a structural view of the longitudinal and lateral reinforcing cages inside the top plate in the present invention.
Fig. 5 is a schematic structural view of a corner portion of a rectangular unit cell in the present invention.
FIG. 6 is a schematic structural view of the support frame of the present invention.
Fig. 7 is a schematic structural view of the joint positions of the longitudinal steel reinforcement cage and the transverse steel reinforcement cage in the present invention.
Fig. 8 is a schematic structural view of the first connecting rib in the present invention.
Fig. 9 is a schematic structural view of the second connecting rib in the present invention.
Reference numerals: the steel bar reinforced concrete slab comprises a base plate 1, a main keel beam 2, a secondary keel beam 3, a formwork 4, a support frame 5, a top plate 6, a rectangular unit cell 7, a positioning component 8, a pre-embedded screw 8.1, a positioning cone 8.2, a supporting plate 8.3, a nut 8.4, a threaded blind hole 9, a support sheet 10, a first connecting rib 11, a first upper anchoring section 11.1, a first lower anchoring section 11.2, a second connecting rib 12, a second upper anchoring section 12.1, a second lower anchoring section 12.2, a through hole 13, a longitudinal hidden rib beam 14, a transverse hidden rib beam 15, a longitudinal reinforcing steel bar framework 16, a transverse reinforcing steel bar framework 17, a reinforcing steel bar support 18 and a filling strip 19.
Detailed Description
As shown in fig. 1-9, the fabricated concrete bidirectional dense-rib floor structure comprises a bottom plate 1, a main keel beam 2 and a secondary keel beam 3; also comprises a supporting frame 5, a mould shell 4 and a top plate 6; the main keel beams 2 are arranged in a group and are arranged at intervals along the transverse direction; the secondary keel beams 3 are arranged at intervals along the longitudinal direction, and the secondary keel beams 3 and the main keel beam 2 are enclosed to form a group of rectangular unit cells 7; the four corner positions of the bottom plate 1, which are close to the rectangular unit cells 7, are respectively provided with a positioning component 8; the positioning component 8 comprises a pre-buried screw 8.1 and a positioning cone 8.2; the lower end of the embedded screw 8.1 is embedded in the bottom plate 1, and a nut 8.4 is connected to the embedded screw 8.1; the bottom of the positioning cone 8.2 is provided with a threaded blind hole 9, and the threaded blind hole 9 is sleeved on the upper part of the embedded screw 8.1 and is in threaded connection with the embedded screw 8.1; an annular supporting plate 8.3 is arranged on the outer side wall of the positioning cone 8.2; the supporting frames 5 are provided with a group and correspondingly arranged in a group of rectangular unit cells 7; each support frame 5 is rectangular and annular, and four internal corner positions of each support frame 5 are respectively connected with a support sheet 10; a through hole 13 is formed in the support sheet 10 at a position corresponding to the embedded screw 8.1; the positioning cone 8.2 correspondingly penetrates through the through hole 13, and the supporting plate 8.3 is supported and connected at the bottom of the supporting plate 10; the formworks 4 are provided with one group and correspondingly arranged in the rectangular unit lattices 7, the bottom parts of the formworks 4 are supported on the supporting frames 5, and the top parts of the formworks 4 are flush with the top parts of the main keel beams 2 and the secondary keel beams 3; the upper end of the positioning component 8 is inserted into the formwork 4; first connecting ribs 11 are arranged in the main keel beam 2 at intervals, and the upper ends of the first connecting ribs 11 exceed the top surface of the main keel beam 2; second connecting ribs 12 are arranged in the secondary keel beam 3 at intervals, and the upper ends of the second connecting ribs 12 exceed the top surface of the secondary keel beam 3; the top plate 6 is poured on the tops of the main keel beam 2, the secondary keel beam 3 and the formwork 4; a longitudinal hidden rib beam 14 is arranged in the top plate 6 and at the position corresponding to the main keel beam 2; and a transverse hidden rib beam 15 is arranged in the top plate 6 at the position corresponding to the secondary keel beam 3.
In this embodiment, a longitudinal steel reinforcement framework 16 is arranged in the longitudinal hidden rib beam 14; four longitudinal steel reinforcement frameworks 16 are arranged in a rectangular shape; the longitudinal steel bar framework 16 comprises longitudinal bars and stirrups; four longitudinal bars are arranged in a rectangular shape; the four longitudinal bars are fixedly connected by the stirrups.
In this embodiment, a transverse steel reinforcement framework 17 is arranged in the transverse hidden rib beam 15; four transverse steel reinforcement frameworks 17 are arranged in a rectangular shape; the transverse steel bar framework 17 comprises a transverse steel bar and a stirrup; four transverse ribs are arranged in a rectangular shape; the four longitudinal bars are fixedly connected by the hooping; the transverse steel reinforcement framework 17 and the longitudinal steel reinforcement framework 16 are horizontally arranged correspondingly, and the transverse steel reinforcement framework 17 penetrates through the longitudinal steel reinforcement framework 16 at the position intersected with the longitudinal steel reinforcement framework 16.
In this embodiment, a supporting steel bar 18 is disposed at a position where the transverse steel bar framework 17 intersects with the longitudinal steel bar framework 16; the support bars 18 are connected to the longitudinal cage 16.
In this embodiment, the upper end of the first connecting rib 11 is horizontally bent to form a first upper anchoring section 11.1; the first upper anchoring section 11.1 extends into the roof 6; the lower end of the first connecting rib 11 is horizontally bent to form a first lower anchoring section 11.2; the upper end of the second connecting rib 12 is horizontally bent to form a second upper anchoring section 12.1; the second upper anchoring section 12.1 extends into the roof 6; the lower end of the second connecting rib 12 is horizontally bent to form a second lower anchoring section 12.2.
In this embodiment, the mold shell 4 is a DLM hollow slab with lightweight cellular polystyrene foam filler.
In this embodiment, the gaps between the peripheral sides of the rectangular unit cells 7 and the formwork 4 are filled with filling bars 19.
The construction method of the assembled concrete bidirectional ribbed floor structure comprises the following steps.
Step one, erecting a formwork and integrally pouring a bottom plate 1, a main keel beam 2 and a secondary keel beam 3; before the bottom plate 1 is poured, a positioning assembly 8 is buried on the bottom plate 1 at a designed position.
And step two, after the concrete strength of the bottom plate 1, the main keel beam 2 and the secondary keel beam 3 reaches the design strength, removing the formwork.
And step three, mounting the supporting frame 5, and connecting the supporting frame 5 with the positioning assembly 8.
Step four, installing the formwork 4, and filling the gaps between the peripheral side edges of the rectangular unit cells 7 and the formwork 4 with filling strips 19.
And fifthly, erecting a template of the top plate 6, and pouring concrete of the top plate 6.
And sixthly, removing the template after the concrete of the top plate 6 is cured to the designed strength, and finishing the construction.
In the embodiment, in the first step, before the main keel beam 2 and the secondary keel beam 3 are poured, the steel bars of the main keel beam 2 and the secondary keel beam 3 are bound, and the first connecting rib 11 and the second connecting rib 12 are arranged at the designed positions, so that the lower end of the first connecting rib 11 is connected with the steel bars of the main keel beam 2, and the lower end of the second connecting rib 12 is connected with the steel bars of the secondary keel beam 3; and step five, before the concrete of the top plate 6 is poured, binding a transverse steel reinforcement framework 17, a longitudinal steel reinforcement framework 16 and a support steel reinforcement 18, connecting the upper end of the first connecting rib 11 with the longitudinal steel reinforcement framework 16 at the corresponding position, and connecting the upper end of the second connecting rib 12 with the transverse steel reinforcement framework 17 at the corresponding position.
In this embodiment, the stirrup is a closed rectangular or triangular stirrup, or a U-shaped stirrup with an upward opening.
In this embodiment, the specifications of the longitudinal ribs and the transverse ribs are all HPB300, HRB335, HRB400 or HRB500.
In this embodiment, the support sheet 10 is disposed in a hexagonal shape.
In this embodiment, the lower ends of the support bars 18 are embedded in the intersection point of the main keel beam 2 and the sub keel beam 3.
The above embodiments are not intended to be exhaustive or to limit the invention to other embodiments, and the above embodiments are intended to illustrate the invention and not to limit the scope of the invention, and all applications that can be modified from the invention are within the scope of the invention.

Claims (8)

1. An assembled concrete bidirectional ribbed floor structure comprises a bottom plate (1), a main keel beam (2) and a secondary keel beam (3); the method is characterized in that: also comprises a supporting frame (5), a mould shell (4) and a top plate (6); the main keel beams (2) are arranged in a group and are arranged at intervals along the transverse direction; the secondary keel beams (3) are arranged at intervals along the longitudinal direction, and the secondary keel beams (3) and the main keel beams (2) are enclosed to form a group of rectangular unit cells (7); the four corner positions of the bottom plate (1) close to the rectangular unit grids (7) are respectively provided with a positioning component (8); the positioning component (8) comprises a pre-buried screw (8.1) and a positioning cone (8.2); the lower end of the embedded screw (8.1) is embedded in the bottom plate (1), and the embedded screw (8.1) is connected with a nut (8.4); the bottom of the positioning cone (8.2) is provided with a threaded blind hole (9), and the threaded blind hole (9) is sleeved on the upper part of the embedded screw (8.1) and is in threaded connection with the embedded screw (8.1); an annular supporting plate (8.3) is arranged on the outer side wall of the positioning cone (8.2); the supporting frames (5) are provided with a group and correspondingly arranged in a group of rectangular unit cells (7); each supporting frame (5) is rectangular and annular, and supporting sheets (10) are respectively connected to four internal corner positions of each supporting frame (5); the support sheet (10) is provided with a through hole (13) at the position corresponding to the embedded screw (8.1); the positioning cone (8.2) correspondingly penetrates through the through hole (13), and the supporting plate (8.3) is supported and connected at the bottom of the supporting plate (10); the formwork (4) is provided with a group and correspondingly arranged in the rectangular unit lattices (7), the bottom of the formwork (4) is supported on the supporting frame (5), and the top of the formwork (4) is flush with the tops of the main keel beam (2) and the secondary keel beam (3); the upper end of the positioning component (8) is inserted into the formwork (4); first connecting ribs (11) are arranged in the main keel beam (2) at intervals, and the upper ends of the first connecting ribs (11) exceed the top surface of the main keel beam (2); second connecting ribs (12) are arranged in the secondary keel beam (3) at intervals, and the upper ends of the second connecting ribs (12) exceed the top surface of the secondary keel beam (3); the top plate (6) is poured on the tops of the main keel beam (2), the secondary keel beam (3) and the formwork (4); a longitudinal hidden rib beam (14) is arranged in the top plate (6) and at the position corresponding to the main keel beam (2); a transverse hidden rib beam (15) is arranged in the top plate (6) and at the position corresponding to the secondary keel beam (3); and filling strips (19) are filled in gaps between the side edges of the periphery of the rectangular unit grids (7) and the formwork (4).
2. The fabricated concrete bidirectional multi-ribbed floor structure according to claim 1, wherein: a longitudinal steel bar framework (16) is arranged in the longitudinal hidden rib beam (14); four longitudinal steel reinforcement frameworks (16) are arranged in a rectangular shape; the longitudinal steel bar framework (16) comprises longitudinal bars and stirrups; four longitudinal bars are arranged in a rectangular shape; the four longitudinal bars are fixedly connected by the stirrups.
3. The fabricated concrete bidirectional ribbed floor structure according to claim 2, wherein: a transverse steel bar framework (17) is arranged in the transverse hidden rib beam (15); four transverse steel bar frameworks (17) are arranged in a rectangular shape; the transverse steel bar framework (17) comprises a transverse bar and a stirrup; four transverse ribs are arranged in a rectangular shape; the four longitudinal bars are fixedly connected by the stirrups; the transverse steel bar framework (17) and the longitudinal steel bar framework (16) are horizontally arranged correspondingly, and the transverse steel bar framework (17) penetrates through the longitudinal steel bar framework (16) at the position intersected with the longitudinal steel bar framework (16).
4. The fabricated concrete bidirectional multi-ribbed floor structure according to claim 3, wherein: supporting steel bars (18) are arranged at the crossed positions of the transverse steel bar framework (17) and the longitudinal steel bar framework (16); the supporting steel bars (18) are connected with the longitudinal steel bar framework (16).
5. The fabricated concrete bidirectional multi-ribbed floor structure according to claim 1, wherein: the upper end of the first connecting rib (11) is horizontally bent to form a first upper anchoring section (11.1); the first upper anchoring section (11.1) extends into the roof (6); the lower end of the first connecting rib (11) is horizontally bent to form a first lower anchoring section (11.2); the upper end of the second connecting rib (12) is horizontally bent to form a second upper anchoring section (12.1); the second upper anchoring section (12.1) extends into the roof (6); the lower end of the second connecting rib (12) is horizontally bent to form a second lower anchoring section (12.2).
6. The fabricated concrete bidirectional multi-ribbed floor structure according to claim 1, wherein: the formwork (4) is a DLM light porous polystyrene foam filler hollow slab.
7. A construction method of an assembled concrete bidirectional multi-ribbed floor structure according to any one of claims 1 to 6, characterized by comprising the steps of:
the method comprises the following steps that firstly, a bottom plate (1), a main keel beam (2) and a secondary keel beam (3) are integrally poured after a formwork is erected; before the bottom plate (1) is poured, a positioning assembly (8) is buried on the bottom plate (1) at a designed position;
step two, after the concrete strength of the bottom plate (1), the main keel beam (2) and the secondary keel beam (3) reaches the design strength, removing the formwork;
step three, mounting a supporting frame (5), and connecting the supporting frame (5) with a positioning component (8);
step four, installing a formwork (4), and filling strips (19) in gaps between the peripheral side edges of the rectangular unit grids (7) and the formwork (4);
step five, erecting a template of the top plate (6), and pouring concrete of the top plate (6);
and sixthly, removing the template after the concrete of the top plate (6) is cured to the designed strength, and finishing construction.
8. The construction method of the assembled concrete bidirectional multi-ribbed floor structure according to claim 7, wherein the construction method comprises the following steps: binding reinforcing steel bars of the main keel beam (2) and the secondary keel beam (3) before the main keel beam (2) and the secondary keel beam (3) are poured in the first step, arranging a first connecting rib (11) and a second connecting rib (12) at a designed position, connecting the lower end of the first connecting rib (11) with the reinforcing steel bars of the main keel beam (2), and connecting the lower end of the second connecting rib (12) with the reinforcing steel bars of the secondary keel beam (3); and step five, before the concrete of the top plate (6) is poured, binding a transverse steel reinforcement framework (17), a longitudinal steel reinforcement framework (16) and a support steel bar (18), connecting the upper end of the first connecting bar (11) with the longitudinal steel reinforcement framework (16) at the corresponding position, and connecting the upper end of the second connecting bar (12) with the transverse steel reinforcement framework (17) at the corresponding position.
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CN202577703U (en) * 2012-05-14 2012-12-05 天津住宅集团建设工程总承包有限公司 Ribbed cast-in-place concrete floor
CN106609571A (en) * 2016-09-30 2017-05-03 长沙远大住宅工业集团股份有限公司 Overlaid assembly-type concrete dense-rib floor structure system and construction method for same
CN106609570A (en) * 2016-09-30 2017-05-03 长沙远大住宅工业集团股份有限公司 Laminated assembly type concrete ribbed floor
CN112982777B (en) * 2021-04-20 2023-04-11 阿博建材（昆山）有限公司 Construction process of light prefabricated assembly type space net rack ribbed floor
CN112982774B (en) * 2021-04-20 2023-04-11 阿博建材（昆山）有限公司 Construction method for forming multi-ribbed floor based on quick-assembly type keel formwork combined template

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