CN111305439A - Laminated slab with disassembly-free die steel frame - Google Patents

Laminated slab with disassembly-free die steel frame Download PDF

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Publication number
CN111305439A
CN111305439A CN201910518216.XA CN201910518216A CN111305439A CN 111305439 A CN111305439 A CN 111305439A CN 201910518216 A CN201910518216 A CN 201910518216A CN 111305439 A CN111305439 A CN 111305439A
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CN
China
Prior art keywords
steel
detachable
steel frame
slab
prefabricated
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Pending
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CN201910518216.XA
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Chinese (zh)
Inventor
周绪红
吴方伯
吴充
蒋文
徐静
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Individual
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Individual
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Publication of CN111305439A publication Critical patent/CN111305439A/en
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/16Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/32Floor structures wholly cast in situ with or without form units or reinforcements
    • E04B5/36Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work

Abstract

The invention discloses a laminated slab with a form-removal-free steel frame and a construction method, which consists of a detachable steel frame, bolts, prefabricated slabs and post-cast concrete; the detachable steel frame consists of a folded plate and a flat steel, the folded plate and the flat steel are connected by a bolt, and the prefabricated plate is provided with an embedded nut or a reserved screw hole; the detachable steel frame can also adopt section steel, channel steel or I-steel, and the flange or web of the channel steel or the I-steel is provided with a hole which is matched with the prefabricated plate. The construction method comprises the following steps: manufacturing a prefabricated plate with a pre-buried screw cap or a reserved screw hole; bolts penetrate through the holes to connect the precast slabs with the detachable steel frames or the channel steels or the I-shaped steels; and hoisting the assembled detachable steel frame or channel steel or I-steel and the prefabricated slab to the elevation of the construction surface, binding steel bars on the prefabricated slab, pouring concrete, dismantling bolts when the concrete reaches a certain strength, and removing the detachable steel frame or channel steel or I-steel to form the laminated floor.

Description

Laminated slab with disassembly-free die steel frame
Technical Field
The invention relates to the field of building construction, in particular to a laminated slab with a die-disassembly-free steel frame.
Background
Fabricated composite floor slabs are an important component of fabricated structures. In the fabricated structure, the laminated floor slab plays an important role. The superposed floor slab bears the vertical load transmitted from the floor and transmits the floor load to the structural beams and the structural columns; the floor slab has high rigidity in the plane, and the adjacent vertical components are coordinated to resist the action of horizontal force together.
Laminated floor slabs are structural members developed more thoroughly in the technology in an assembled structure. At present, the laminated floor slab technology mainly comprises the following three types: 1. a steel bar truss laminated slab; 2. the ribbed prestressed reinforced concrete precast slab; 3. assembled large board. These prior art techniques can substantially meet the needs of the fabricated structures for horizontal members, but still suffer from certain deficiencies.
These deficiencies are particularly manifested in three areas: 1. the steel bar truss composite slab and the ribbed prestressed reinforced concrete prefabricated slab are generally strip-shaped, a plurality of strip-shaped slabs are required to be assembled into a whole slab in the actual construction process, and concrete is poured on the slab after the assembly is finished to form the integral composite floor slab. The two problems are that the stress ribs of the bottom plate are arranged along the length direction of the strip, the reinforcement mode is one-way, the reinforcement in the other direction is a distribution rib or a secondary stress rib, and the stress performance is still different from that of the traditional cast-in-place bidirectional plate. 2. The existence of the longitudinal steel bar trusses or the longitudinal ribs on the steel bar truss laminated slab and the ribbed prestressed reinforced concrete precast slab hinders the flexible arrangement of pipelines to a certain extent. 3. The large prefabricated plate is large in size and self-weight, the deformation of the construction and hoisting process is effectively controlled, the thickness of the bottom plate is increased frequently in engineering practice, large transportation hoisting equipment is needed in the transportation and installation process, and the transportation and construction difficulty is large.
The defects of the prior art restrict the development of the assembled structure to a certain extent.
In a future assembly type structure, the development trend of the composite floor slab is that the prefabricated bottom plate is thinner, the two-way arrangement stress performance of the steel bars is better, and the arrangement of the embedded pipelines is more flexible.
The novel composite floor slab which can meet the future development trends has larger vitality and engineering application value.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a laminated slab with a non-stripping steel frame and a construction method.
The invention aims to realize the purpose, and the laminated slab with the die-free steel frame and the construction method thereof are composed of a detachable steel frame, bolts, prefabricated slabs and post-cast concrete; the detachable steel frame consists of a folded plate and a flat steel, the folded plate is connected with the flat steel through a bolt, and the prefabricated plate is provided with a pre-buried nut or a reserved screw hole. Because the precast slab is provided with the embedded nuts or the reserved screw holes, the precast slab can be connected with the detachable steel frame or the channel steel or the I-steel through the bolts. The detachable steel frame can also adopt section steel, channel steel or I-steel, and the flange or web of the channel steel or the I-steel is provided with a hole which is matched with the prefabricated plate. Bolts can connect the precast slabs and the channel steel or the I-steel through the holes. The detachable steel frame has high rigidity, can play a supporting role in the construction process, and can be repeatedly used. The prefabricated slab can play the role of a template, and can also be stressed together with post-cast concrete to form a laminated floor slab. Because the prefabricated plate is a flat plate, the prefabricated plate is more suitable for the arrangement of pipelines.
The invention is characterized in that the detachable steel frame is provided with transverse ribs. The transverse ribs can enhance the connection of the detachable steel frame and improve the transverse rigidity of the detachable steel frame.
The invention is characterized in that the detachable steel frames or channel steel or I-steel are connected by transverse plates. The transverse plate can enhance the connection of the detachable steel frame and improve the transverse rigidity of the detachable steel frame.
The invention is characterized in that the precast slab is provided with two or more detachable steel frames or channel steel or I-steel. Two or more detachable steelframes or channel-section steel or I-steel have great rigidity, can prevent the bottom plate from the anti-arch under the prestressed reinforcement effect, are suitable for the construction of the large-span laminated floor.
A construction method of a laminated slab with a form-removal-free steel frame comprises the following steps: manufacturing a prefabricated plate with a pre-buried screw cap or a reserved screw hole; bolts penetrate through the holes to connect the precast slabs with the detachable steel frames or the channel steels or the I-shaped steels; and hoisting the assembled detachable steel frame or channel steel or I-steel and the prefabricated slab to the elevation of the construction surface, binding steel bars on the prefabricated slab, pouring concrete, dismantling bolts when the concrete reaches a certain strength, and removing the detachable steel frame or channel steel or I-steel to form the laminated floor.
The steel frame laminated slab with the disassembly-free mold is convenient to construct, high in construction speed and simple in production of the prefabricated slab. The detachable steel frame or channel steel or I-steel can be prefabricated in a workshop, and has the advantages of small size, light weight, convenient transportation, low requirements on transportation tools and hoisting equipment, accordance with the development direction of building industrialization and large-scale production, and good economic benefit and social benefit.
The disassembled steel frame or channel steel or I-shaped steel and precast slabs can also be used for shear wall construction.
Drawings
FIG. 1 is a schematic structural diagram of a folded plate and a prefabricated plate, 3 is the prefabricated plate, 4 is the folded plate, and 6 is a hole.
Fig. 2 is a schematic structural view of a detachable steel frame, wherein 1 is a detachable steel frame, 2 is a bolt, and 5 is a flat steel.
FIG. 3 is a schematic structural diagram of the detachable steel frame and the prefabricated slab.
Fig. 4 shows another embodiment of the detachable steel frame and the prefabricated slab, 7 is a transverse rib, and 8 is a transverse slab.
Fig. 5 is a schematic structural diagram of a detachable steel frame adopting channel steel.
FIG. 6 is another embodiment of the detachable steel frame and the prefabricated slab.
FIG. 7 is a schematic view of the assembly structure of the detachable steel frame and the precast slab.
Fig. 8 is a schematic structural view of concrete poured on the precast slab.
FIG. 9 is a schematic structural view of the composite slab with the detachable steel frame removed.
Detailed Description
The invention will be further explained with reference to the drawings.
The invention is shown in attached figures 1-9, and the purpose of the invention is realized by the method, the composite slab with the die-free steel frame and the construction method, the composite slab is composed of a detachable steel frame 1, bolts 2, a precast slab 3 and post-cast concrete, the detachable steel frame 1 is composed of a folded plate 4 and a flat steel 5, the folded plate 4 and the flat steel 5 are connected by the bolts, and the precast slab 3 is provided with pre-buried nuts or reserved screw holes. The detachable steel frame 1 can also adopt section steel, channel steel or I-steel, and the flange or web plate of the channel steel or the I-steel is provided with a hole 6 which is matched with the precast slab 3.
FIG. 1 is a schematic structural diagram of a folding plate and a prefabricated plate, FIG. 2 is a schematic structural diagram of a detachable steel frame, and FIG. 3 is a schematic structural diagram of a detachable steel frame and a prefabricated plate.
The invention is characterized in that the detachable steel frame 1 is provided with a transverse rib 7. Fig. 4 shows another embodiment of the detachable steel frame and the prefabricated slab, two detachable steel frames 1 are arranged on the prefabricated slab 3, transverse ribs 7 are arranged on the detachable steel frames 1, and the detachable steel frames 1 are connected through transverse plates 8.
The invention is characterized in that the detachable steel frames or channel steels or I-shaped steels are connected by transverse plates 8.
The invention is characterized in that the precast slab 3 is provided with two or more detachable steel frames 1 or channel steels or I-shaped steels. Fig. 5 is a schematic structural diagram of a detachable steel frame adopting channel steel. FIG. 6 is another embodiment of the detachable steel frame and the prefabricated slab.
A construction method of a laminated slab with a form-removal-free steel frame comprises the following steps: manufacturing a prefabricated plate 3 with a pre-buried screw cap or a reserved screw hole; bolts 2 penetrate through the holes 6 to connect the precast slabs 3 with the detachable steel frame 1 or channel steel or I-steel; and hoisting the assembled detachable steel frame 1 or channel steel or I-steel and the prefabricated slab 3 to the elevation of the construction surface, binding reinforcing steel bars on the prefabricated slab 3, pouring concrete, removing the bolts 2 after the concrete reaches a certain strength, and removing the detachable steel frame 1 or channel steel or I-steel to form the laminated floor. FIG. 7 is a schematic view of the assembly structure of the detachable steel frame and the precast slab. Fig. 8 is a schematic structural view of concrete poured on the precast slab. FIG. 9 is a schematic structural view of the composite slab with the detachable steel frame removed.

Claims (5)

1. The invention discloses a laminated slab with a form-removal-free steel frame and a construction method, which consists of a detachable steel frame (1), bolts (2), a prefabricated slab (3) and post-cast concrete; the detachable steel frame (1) consists of a folded plate (4) and a flat steel (5), the folded plate (4) and the flat steel (5) are connected by bolts, and the prefabricated plate (3) is provided with an embedded nut or a reserved screw hole; the detachable steel frame (1) can also adopt section steel, channel steel or I-steel, and holes (6) matched with the precast slabs (3) are arranged on flanges or webs of the channel steel or the I-steel.
2. The split-free steel frame composite slab as claimed in claim 1, wherein: the detachable steel frame (1) is provided with transverse ribs (7).
3. The split-free steel frame composite slab as claimed in claim 1, wherein: the detachable steel frame (1) or the channel steel or the I-steel are connected through a transverse plate (8).
4. The split-free steel frame composite slab as claimed in claim 1, wherein: the precast slab is provided with two or more detachable steel frames (1) or channel steel or I-steel.
5. A construction method of a laminated slab with a form-removal-free steel frame comprises the following steps: manufacturing a prefabricated plate (3) with a pre-buried screw cap or a reserved screw hole; bolts (2) penetrate through the holes (6) to connect the precast slabs (3) with the detachable steel frame (1) or the channel steel or the I-steel; and hoisting the assembled detachable steel frame (1) or channel steel or I-steel and the prefabricated slab (3) to the elevation of the construction surface, binding reinforcing steel bars on the prefabricated slab (3), pouring concrete, removing the bolts (2) when the concrete reaches a certain strength, and removing the detachable steel frame (1) or the channel steel or the I-steel to form the laminated floor.
CN201910518216.XA 2019-06-06 2019-06-14 Laminated slab with disassembly-free die steel frame Pending CN111305439A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2019104922877 2019-06-06
CN201910492287 2019-06-06

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CN111305439A true CN111305439A (en) 2020-06-19

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113175141A (en) * 2021-05-14 2021-07-27 重庆中科建筑科技(集团)有限公司 Construction method of composite floor slab with detachable additional rigidity device
CN113175142A (en) * 2021-05-14 2021-07-27 重庆中科建筑科技(集团)有限公司 Construction method of composite floor slab with detachable additional stiffness part

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1807793A (en) * 2006-01-27 2006-07-26 贵州大学 Reinforced concrete ribbed grid-like large floorslab and preparation method thereof
CN2818421Y (en) * 2005-06-13 2006-09-20 刘建康 Upper bearing frame for laminated floorslab construction
CN102409787A (en) * 2011-09-02 2012-04-11 吴方伯 Reinforced concrete overlapped floor slab
CN102535711A (en) * 2012-01-13 2012-07-04 湖北弘毅建筑装饰工程有限公司 Laminated floor slab for steel buildings
CN205330159U (en) * 2016-02-01 2016-06-22 成都市第六建筑工程公司 Cast -in -place slab band die block fixing device of coincide floor
CN106049732A (en) * 2016-07-15 2016-10-26 中国矿业大学 Honeycomb pore profiled steel sheet bidirectional overlapped floor slab

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2818421Y (en) * 2005-06-13 2006-09-20 刘建康 Upper bearing frame for laminated floorslab construction
CN1807793A (en) * 2006-01-27 2006-07-26 贵州大学 Reinforced concrete ribbed grid-like large floorslab and preparation method thereof
CN102409787A (en) * 2011-09-02 2012-04-11 吴方伯 Reinforced concrete overlapped floor slab
CN102535711A (en) * 2012-01-13 2012-07-04 湖北弘毅建筑装饰工程有限公司 Laminated floor slab for steel buildings
CN205330159U (en) * 2016-02-01 2016-06-22 成都市第六建筑工程公司 Cast -in -place slab band die block fixing device of coincide floor
CN106049732A (en) * 2016-07-15 2016-10-26 中国矿业大学 Honeycomb pore profiled steel sheet bidirectional overlapped floor slab

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113175141A (en) * 2021-05-14 2021-07-27 重庆中科建筑科技(集团)有限公司 Construction method of composite floor slab with detachable additional rigidity device
CN113175142A (en) * 2021-05-14 2021-07-27 重庆中科建筑科技(集团)有限公司 Construction method of composite floor slab with detachable additional stiffness part

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