CN102094481B - Assembled monolithic concrete ribbed hollow floor slab - Google Patents

Assembled monolithic concrete ribbed hollow floor slab Download PDF

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Publication number
CN102094481B
CN102094481B CN2011100615816A CN201110061581A CN102094481B CN 102094481 B CN102094481 B CN 102094481B CN 2011100615816 A CN2011100615816 A CN 2011100615816A CN 201110061581 A CN201110061581 A CN 201110061581A CN 102094481 B CN102094481 B CN 102094481B
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reinforcing bar
rib
assembling
container
open
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CN2011100615816A
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CN102094481A (en
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辛崇安
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辛崇安
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Abstract

The invention relates to a floor slab, in particular to an assembled monolithic concrete ribbed hollow floor slab with combination of prefabrication and casting in place and joint stress, which comprises reinforced concrete rib beams (1), a reinforced concrete overlapping layer (2) and assembled box dies (3); each reinforced concrete rib beam is formed by casting in place between the adjacent assembled box dies; the reinforced concrete overlapping layer is formed by casting in place above the assembled box dies; each assembled box die (3) comprises a lattice reinforced composite slab (4) and an open box (5), and each lattice reinforced composite slab is a top slab of the open box (5); and protruding steel bars (6) are arranged in the lattice reinforced composite slabs (4), the protruding steel bars protrude into the peripheral rib beams for anchoring, longitudinal stressed steel bars (11) in the rib beams are hooked, and the rib beams (1) and the lattice reinforced composite slabs (4) are jointly stressed. The structural height of the floor slab can be greatly reduced, and higher using space for a building can be provided under the situation of same storey height.

Description

A kind of assembling monolithic devices concrete dense-rib cassette ceiling
Technical field
The present invention relates to a kind of floor, in particular, relate to a kind of prefabricated and cast-in-place common stressed assembling monolithic devices concrete dense-rib cassette ceiling that combines.
Background technology
Along with China's economic construction is developed by leaps and bounds, reinforced concrete structure is extensive use in industry and civilian construction, and has obtained good technology economic.Because architectural to high level, requirements such as large space and antidetonation, developed in recent years many new, the structural system that techno-economic effect is good.
Over past ten years, the concrete dense-rib cassette ceiling is used widely in China's construction work.Close rib cassette ceiling is meant that the unidirectional or bi-directional type of 1. rib distance<=1.5m is called close rib cassette ceiling; 2. be applicable to medium or than the public building of large span; 3. for ordinary concrete, span<=30m; For prestressed concrete, span<=45m; 4. should cast-in-place and employing typified form (abbreviation formwork) or typing filled internal mold.Two-way ribbed slab is because two-way common bearing load effect; Stress performance is better; Therefore; Such floor form can be widely used in many high-rise public buildings such as market, exhibition hall, conference room, warehouse, library, underground garage, lecture theater, is particularly useful for the structure types of large space, large span, the requirement of high headroom.
The form of close rib cassette ceiling mainly contains two big types, and one type is the close rib cassette ceiling of cast-in-situ concrete, and another kind of is the prefabricated and cast-in-place concrete dense-rib cassette ceiling that combines.The technology of the close rib cassette ceiling of cast-in-situ concrete realizes that measure mainly is by filling " internal mold " among cast-in-situ concrete.Internal mold can adopt hollow tube core, casing, also can adopt cylindrical shell, the block of light solid.But to the prefabricated and cast-in-place concrete dense-rib cassette ceiling that combines, still do not have reliable measures and realize at home.
Filled internal mold present stage of realizing close rib cassette ceiling in addition is integrated support structure, and these members can be hollow tube core, casing or the cylindrical shell of light solid, blocks.But its purposes is identical, as just filler.Its structure is identical, is integrated support structure.Present stage does not still have die component in the assembling and is used for the precedent among the close rib cassette ceiling at home.
In the ribbed slab floor field, in strengthening the prefabricated and cast-in-place globality measure that combines, still there is not the precedent that adopts lattice reinforcing bar technical measures in addition.
Summary of the invention
The object of the invention is to solve defective of the prior art, and a kind of assembling monolithic devices concrete dense-rib cassette ceiling is provided, and this concrete dense-rib cassette ceiling adopts die component in the assembling, and promptly assembling case mould adopts prefabricated and cast-in-place process combined.
A kind of assembling monolithic devices of the present invention concrete dense-rib cassette ceiling comprises: steel concrete girt strip (1), reinforced concrete sandwich layer (2), assembling case mould (3);
Said steel concrete girt strip cast-in-site between adjacent assembling case mould forms;
Said reinforced concrete sandwich layer cast-in-site above assembling case mould forms;
Said assembling case mould (3) is made up of lattice reinforcing bar superimposed sheet (4) and open top container (5), and lattice reinforcing bar superimposed sheet is the top board of open top container (5);
It is characterized in that: be furnished with protruding bar (6) in the said lattice reinforcing bar superimposed sheet (4), said protruding bar extends anchoring in the peripheral rib beam outward, and catches on longitudinal stress reinforcing bar (11) in the girt strip, and girt strip (1) is stressed jointly with lattice reinforcing bar superimposed sheet (4).
Further, said reinforced concrete sandwich layer (2) forms the stressed section of T-shape with lattice reinforcing bar superimposed sheet (4) and steel concrete girt strip (1).
Further, said open top container (5) is GRC (glass fiber reinforced polymer cement) goods.
Further, said open top container (5) is all around in the sidewall plane, and all crest lines of open top container (5) are provided with shear key (7), and said shear key is along horizontal-extending or the groove that vertically extends.
Further, said groove has rectangle or trapezoidal cross-section.
Further; Side along said lattice reinforcing bar superimposed sheet (4) is furnished with cold rolling lattice reinforcing bar (8); Said cold rolling lattice reinforcing bar is the reinforcement component with wave-like of rule, and the reinforcing bar lower edge is embedded in the lattice reinforcing bar superimposed sheet (4), winds up to combine with reinforced concrete sandwich layer (2).
Further, said cold rolling lattice reinforcing bar (8) is provided with along the opposite side setting or four limits of lattice reinforcing bar superimposed sheet (4).
Further, said assembling case mould (3) is spliced through double buckle between the said more piece open top container (5) by more piece open top container (5).
Further, the base plate of said open top container is provided with rod shaped rib or cross rib (9).
Further, the sidewall all around of said open top container is provided with wedge ribs (10).
The invention has the beneficial effects as follows: the hollow rate of concrete dense-rib cassette ceiling of the present invention wants high than the close rib cassette ceiling of cast-in-situ concrete, and the floor deadweight is lighter, can save material effectively, reduces construction costs; Each member of assembling case mould all adopts batch production, standardization to make in such floor, thereby can reduce on-site concrete and water fluence, has improved efficiency of construction; Compare with general girt strip floor, assembling case mould participation structure integral body is stressed, thereby the structure height of such floor can reduce greatly, can provide under the identical floor height situation and more highly build usage space, and whole floor slab bottoms is smooth, the convenient use.
Description of drawings
Fig. 1 is the structural representation of single-unit open top container.
Fig. 2 is a more piece open top container structural representation.
Fig. 3 is the structural representation of lattice reinforcing bar superimposed sheet.
Fig. 4 is the schematic cross-section of lattice reinforcing bar superimposed sheet.
Fig. 5 is an assembling case mode structure sketch map.
Fig. 6 is the schematic cross-section of assembling case mould.
Fig. 7 is the structural representation of concrete dense-rib cassette ceiling of the present invention, and open top container is the single-unit formula.
Fig. 8 is the structural representation of concrete dense-rib cassette ceiling of the present invention, the open top container multi-section type.
Fig. 9 is the structural representation that has the open top container of cross rib and wedge ribs.
Figure 10 is the schematic cross-section that has the open top container of cross rib and wedge ribs.
The specific embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is done further elaboration.
As shown in Figure 1, be the structural representation of open top container 5 of the present invention.This open top container is processed by glass fiber reinforced cement, be positioned at lattice reinforcing bar superimposed sheet 4 below, the uncovered casing by sidewall and base plate are formed is assembled into closed box with lattice reinforcing bar superimposed sheet 4.Open top container 5 is the GRC goods; In concrete placement, play the effect of cast-in-situ steel reinforced concrete girt strip 1 side form, support the effect of lattice reinforcing bar superimposed sheet 4 and construction operation load, box bottom exposes; As the building ceiling, GRC goods favorable durability can be closely bound up like this.Open top container promptly can be the single-unit formula, forms closed box with lattice reinforcing bar superimposed sheet 4, also can be multi-section type, and is through the open top container 5 of assembling formation more piece, as shown in Figure 2.If multi-section type splices fixing through double buckle each other each other.Multi-section type assembling case mould height can be pursued higher height, be single-unit can't realize that and other like products have better anti-side rigidity relatively, have resistance to overturning preferably.
For strengthening being connected between assembling case mould and the cast-in-situ concrete, around assembling case mould in the sidewall plane, and all crest lines of assembling case mould are installed certain rule shear key 7 are set.Shear key can not only the back strengthens the connection between prefabricated and cast-in-place, the more important thing is and can transmit horizontal shear.
In the sidewall plane shear key all should be set around the assembling case mould: shear key is for along horizontal-extending or the groove (rectangle or trapezoidal cross-section) that vertically extends; Depth of groove is not less than 5mm; Width is between the 15mm to 25; Development length is not less than 100mm. shear key distribution area and is not less than 30% of this plane inside wall gross area, also should be greater than 50%.
On all crest lines of case mould, shear key should be set, the degree of depth is not less than 10mm, width be 10mm between the 20mm, development length is not less than 100mm, the shear key distribution length should be less than 20% of this crest line length overall on this crest line, should be greater than 50% yet.
Fig. 3, Fig. 4 are the structural representations of lattice reinforcing bar superimposed sheet 4 of the present invention.Lattice reinforcing bar superimposed sheet 4 is top boards of assembling under casing 3; Dull and stereotyped with cast-in-place reinforced concrete sandwich layer 2 as the precast concrete of building (room) capping layer; Dull and stereotyped carry out arrangement of reinforcement (single-layer bidirectional steel mesh reinforcement), for realizing effective the connection and co-operation between prefabricated flat board and cast-in-place surface layer and the cast-in-place girt strip according to requirement for bearing capacity.Among the present invention, lattice reinforcing bar superimposed sheet 4 is had following technical improvement:
(1) is furnished with protruding bar 6 in the lattice reinforcing bar superimposed sheet 4; Extend anchoring in the peripheral rib beam outside the protruding bar 6; And catch on longitudinal stress reinforcing bar 11 in the girt strip, treat girt strip concrete pouring sclerosis after, the cementation through reinforcing bar makes girt strip and lattice reinforcing bar superimposed sheet 4 stressed jointly.
(2) side along lattice reinforcing bar superimposed sheet 4 is furnished with cold rolling lattice reinforcing bar 8, and cold rolling lattice reinforcing bar is the reinforcement component with wave-like of rule, and the reinforcing bar lower edge is embedded in the lattice reinforcing bar superimposed sheet 4, winds up to combine with reinforced concrete sandwich layer 2.The lattice reinforcing bar can well combine pre-erection and cast-in-place part.The lattice reinforcing bar guarantees that floor has corresponding stiffness in the transportation of superimposed sheet, installation process, the lattice reinforcing bar also plays the effect of a part of bending resistance and shear reinforcement simultaneously, can play the effect of the support of the interior longitudinal reinforcement of superimposed sheet simultaneously.The lattice reinforcing bar is generally the cold rolled reinforcing bar that diameter is 4mm, generally adopts new grade III steel.Preferably be provided with on the opposite side setting or four limits of lattice reinforcing bar superimposed sheet 4.
Fig. 5, shown in Figure 6 be the structural representation of the assembling case mould after the assembling.Be made up of lattice reinforcing bar superimposed sheet 4 and open top container 5, lattice reinforcing bar superimposed sheet is the top board of assembling under casing.
Shown in Figure 7 is the structural representation of concrete dense-rib cassette ceiling of the present invention, and wherein assembling under casing 5 is the single-unit formula, is made up of a lattice reinforcing bar superimposed sheet 4 and an open top container.Visual among the figure, be furnished with protruding bar 6 in the lattice reinforcing bar superimposed sheet 4, protruding bar extends anchoring in the peripheral rib beam outward, and catches on longitudinal stress reinforcing bar 11 in the girt strip, and girt strip 1 is stressed jointly with lattice reinforcing bar superimposed sheet 4.Reinforced concrete sandwich layer 2 forms the stressed section of T-shape with lattice reinforcing bar superimposed sheet 4 and steel concrete girt strip 1.Therefore, among the present invention, assembling case mould not only uses as template, and has as prefabricated primary structure member, realizes the double action of template and structural element.
Shown in Figure 8 is the structural representation of concrete dense-rib cassette ceiling of the present invention, and wherein assembling case mould 3 is a multi-section type.Multi-section type assembling case mould height can be pursued higher height, be the single-unit formula can't realize that and other like products have better anti-side rigidity relatively, have resistance to overturning preferably.
Fig. 9, Figure 10 have the structural representation of the open top container of stiffening rib.
Stiffening rib comprises in-line rib, cross rib and wedge ribs; Be that open top container institute is peculiar, purpose is for strengthening the bulk strength of casing, and can be to a certain extent the casing wall thickness do thinner; Make whole box body lighter, can play the effect that alleviates dead load like this.
Operated by rotary motion in-line rib and cross rib on the base plate of open top container.Operated by rotary motion wedge ribs on sidewall around the open top container.
Because assembling case mould planar dimension is rectangular shape, be similarly rectangle as the open top container planar dimension of its basic composition.Cross rib 9 generally is set on the open top container base plate one, the in-line rib can be set for some special-shaped models (in the planar dimension minor face with the ratio on long limit less than 0.7).
If the casing depth of section than higher (the single-unit height is more than 300), can consider on sidewall, to be provided with wedge ribs 10 this moment.
The stiffening rib breadth of section generally is not less than wall thickness or thickness of slab 2 times, and depth of section is not less than rib width.
In concrete dense-rib cassette ceiling of the prior art; Common filled internal mold only uses as template; And among the present invention, assembling case mould not only uses as template, and has as prefabricated primary structure member; Realize the double action of template and structural element, can practice thrift construction costs to a certain extent.The used open top container of lattice case assembling case mould can be realized higher depth of section with respect to common globality filled internal mold, and it is higher that the cassette ceiling depth of section can be done, and can realize bigger span.And adopt the assembling mounting process can reduce labour intensity, multi-sectional assembled under casing good integrity, good stability, and support effect in having.Assembling case mould each several part member is prefabricated, and site operation assembling mounting process can make follow-up other operations cooperate flexibly, increases work efficiency.Because under casing articulated constuction, top board are again as primary structure member, so not only the traditional relatively internal mold deadweight of casing itself is lighter, concerning cassette ceiling, can realize bigger volume hollow rate.

Claims (10)

1. an assembling monolithic devices concrete dense-rib cassette ceiling comprises: steel concrete girt strip (1), reinforced concrete sandwich layer (2), assembling case mould (3);
Said steel concrete girt strip cast-in-site between adjacent assembling case mould forms;
Said reinforced concrete sandwich layer cast-in-site above assembling case mould forms;
Said assembling case mould (3) is made up of lattice reinforcing bar superimposed sheet (4) and open top container (5), and lattice reinforcing bar superimposed sheet is the top board of open top container (5);
It is characterized in that: be furnished with protruding bar (6) in the said lattice reinforcing bar superimposed sheet (4), said protruding bar extends anchoring in the peripheral rib beam outward, and catches on longitudinal stress reinforcing bar (11) in the girt strip, and girt strip (1) is stressed jointly with lattice reinforcing bar superimposed sheet (4).
2. a kind of assembling monolithic devices concrete dense-rib cassette ceiling according to claim 1 is characterized in that: said reinforced concrete sandwich layer (2) forms the stressed section of T-shape with lattice reinforcing bar superimposed sheet (4) and steel concrete girt strip (1).
3. a kind of assembling monolithic devices concrete dense-rib cassette ceiling according to claim 1, it is characterized in that: said open top container (5) is the glass fiber reinforced polymer cement products.
4. a kind of assembling monolithic devices concrete dense-rib cassette ceiling according to claim 1 is characterized in that: said open top container (5) is all around in the sidewall plane, and all crest lines of open top container (5) are provided with shear key (7),
Said shear key is along horizontal-extending or the groove that vertically extends.
5. a kind of assembling monolithic devices concrete dense-rib cassette ceiling according to claim 4, it is characterized in that: said groove has rectangle or trapezoidal cross-section.
6. a kind of assembling monolithic devices concrete dense-rib cassette ceiling according to claim 1; It is characterized in that: the side along said lattice reinforcing bar superimposed sheet (4) is furnished with cold rolling lattice reinforcing bar (8); Said cold rolling lattice reinforcing bar is the reinforcement component with wave-like of rule; The reinforcing bar lower edge is embedded in the lattice reinforcing bar superimposed sheet (4), winds up to combine with reinforced concrete sandwich layer (2).
7. a kind of assembling monolithic devices concrete dense-rib cassette ceiling according to claim 6 is characterized in that: said cold rolling lattice reinforcing bar (8) is provided with along the opposite side setting or four limits of lattice reinforcing bar superimposed sheet (4).
8. a kind of assembling monolithic devices concrete dense-rib cassette ceiling according to claim 1 is characterized in that: said assembling case mould (3) is spliced through double buckle between the said more piece open top container (5) by more piece open top container (5).
9. a kind of assembling monolithic devices concrete dense-rib cassette ceiling according to claim 1, it is characterized in that: the base plate of said open top container is provided with rod shaped rib or cross rib (9).
10. a kind of assembling monolithic devices concrete dense-rib cassette ceiling according to claim 1 is characterized in that: sidewall is provided with wedge ribs (10) around the said open top container.
CN2011100615816A 2011-03-15 2011-03-15 Assembled monolithic concrete ribbed hollow floor slab Expired - Fee Related CN102094481B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103883074A (en) * 2014-03-13 2014-06-25 江苏明福钢结构有限公司 Steel structure beam
CN104032870B (en) * 2014-06-06 2016-06-15 中国十七冶集团有限公司 The close rib box-shaped of a kind of assembled integral composite floor plate

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1632251A (en) * 2005-01-21 2005-06-29 朱宏宇 Combination type steel net frame and concrete composite block, and method of making same
JP2005325519A (en) * 2004-05-12 2005-11-24 Tadao Ishida Reform structure of folded plate roof
CN201148731Y (en) * 2007-11-09 2008-11-12 李仁海 Close rib beam combined board provided with vertical and horizontal supports in middle

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005325519A (en) * 2004-05-12 2005-11-24 Tadao Ishida Reform structure of folded plate roof
CN1632251A (en) * 2005-01-21 2005-06-29 朱宏宇 Combination type steel net frame and concrete composite block, and method of making same
CN201148731Y (en) * 2007-11-09 2008-11-12 李仁海 Close rib beam combined board provided with vertical and horizontal supports in middle

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