CN203905239U - Prestress hollow slab laminated floor system - Google Patents

Prestress hollow slab laminated floor system Download PDF

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Publication number
CN203905239U
CN203905239U CN201420196181.5U CN201420196181U CN203905239U CN 203905239 U CN203905239 U CN 203905239U CN 201420196181 U CN201420196181 U CN 201420196181U CN 203905239 U CN203905239 U CN 203905239U
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China
Prior art keywords
cored slab
prestressed cored
precast beam
prestressing force
prestress
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Expired - Lifetime
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CN201420196181.5U
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Chinese (zh)
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杨峰
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Abstract

A prestress hollow slab laminated floor system comprises a prestress hollow slab, a prestress precast beam and a cast-in-situ reinforced concrete laminated layer; a plurality of through holes are longitudinally formed in the prestress hollow slab; opening slots with certain lengths are formed in the upper part of the through holes in the slab end; prestress steel strands are longitudinally embedded in the lower part of the prestress hollow slab; the prestress precast beam is formed by combining one or two beams in parallel; prestress steel strands as main ribs are longitudinally embedded in the beam body; anti-shearing members are embedded in the prestress precast beam at intervals along the longitudinal direction. The beams and slabs adopt pre-tension method prestress members, the steel usage is greatly reduced, the self weight is light, the concrete usage is reduced, the structural economy is good, a construction mode of manufacturing in a factory and splicing on site is adopted, die support is not needed, the construction is safe and convenient, the speed is fast and the site is civilized.

Description

Prestressed cored slab superposed floor
Technical field
The utility model relates to building structure field, relates in particular to a kind of prestressing force superposed floor.
Background technology
Traditional prestressed cored slab is applied in the floor of building with simply supported slab form conventionally, and its structural integrity, anti-seismic performance, fireproof performance synergetic structure deformability are all poor, and beam conventionally adopts and spend blue beam, and the prefabricated manufacturing process of blue beam of spending is complicated.Although from macropore prestressing force precast plate (SP plate) the steel using amount province of external introduction, from heavy and light, be suitable for very much the flooring of large span or heavy load, but because plate end is without the anchor bar exposing, the integrated connection poor performance of plate and reinforced concrete beam, use in height degree of splitting earthquake zone is subject to certain limitation, during in addition for the built on stilts terrace of soft clay area, the form of shelving of plate makes precast beam be difficult to form superposed beam, and the stressed height of beam is little.The integral precast superposed floor that the novel pre-stressed precast beam of a kind of good integrity for large space floors and built on stilts terrace, easy construction and hollowcore slab form have not been reported.
Utility model content
Technical problem to be solved in the utility model is to overcome the deficiency of above-mentioned prior art, provides that a kind of structural integrity is good, easy construction, prestressed cored slab superposed floor that cost is low.
A kind of prestressed cored slab superposed floor providing according to the utility model, comprise prestressed cored slab, prestressing force precast beam and cast-in-situ reinforced concrete overlapping layers, described prestressed cored slab is longitudinally provided with some through holes, plate end through hole top is provided with the open slot of certain length, and described prestressed cored slab bottom is longitudinally embedded with prestress wire; Described prestressing force precast beam is one of independence or is combined side by side by two beams, in beam body, be longitudinally embedded with the prestress wire as main muscle, on described prestressing force precast beam, longitudinally interval is embedded with shearing-resistant member, shearing-resistant member is reinforcing bar or shaped steel, shearing-resistant member exposes precast beam upper surface certain length and imbeds in cast-in-situ steel concrete muscle concrete overlapping layers, described cast-in-situ reinforced concrete overlapping layers is located at prestressing force precast beam and prestressed cored slab top, and be filled in the through hole and open slot of prestressed cored slab end, in the root through hole of open slot, be provided with sealing of hole plug.
A kind of prestressed cored slab superposed floor providing according to the utility model also has following attached technical characterictic:
The through hole of described prestressed cored slab is bullet-headed or oval or with the rectangle of fillet, the upper surface of described prestressed cored slab is provided with longitudinal fluting or male and fomale(M&F).
Prestress wire in described prestressed cored slab stretches out plate end certain length.
Described shearing-resistant member is rectangle hoop, and prestressing force precast beam surface certain length is exposed in upper end, and lower end extends prestressing force Prefabricated bar body bottom.
Described shearing-resistant member is angle steel, and angle steel two ends are provided with flange, and certain length in beam body is stretched in angle steel lower end, and prestressing force precast beam surface certain length is exposed in upper end.
In the beam body of described prestressing force precast beam, longitudinally interval is embedded with light foam piece or hollow box.
The steel strand of described prestressing force precast beam stretch out beam-ends certain length, and steel strand end is provided with right angle crotch, and the top of prestressing force precast beam is also longitudinally embedded with prestress wire.
In described cast-in-situ reinforced concrete overlapping layers, be embedded with single-layer bidirectional steel mesh reinforcement.
In the adjacent panel seam of described prestressed cored slab, bottom is provided with elongated bending steel sheet, is vertically embedded with longitudinal reinforcement net sheet or the continuous tension rib of S shape.
The middle part soffit of described prestressed cored slab laterally posts some carbon cloths, and cloth is elongated to be located under the adjacent prestressed cored slab of superposed floor continuously.
A kind of prestressed cored slab superposed floor providing according to the utility model compared with prior art tool has the following advantages:
1, beam, plate all adopt pretensioned precast element, and steel using amount significantly reduces, and hollowcore slab hollow rate is large, and from heavy and light, concrete consumption reduces, and structure economics is good.
2, adopt factory to manufacture the form of construction work of on-site consolidation, without formwork, construction safety is convenient, and speed is fast, on-the-spot civilization.
3, precast plate concave-convex surface, end trough of belt, the interlock of plate seam makes precast plate be combined globality with in-situ layer to improve, and adopts continuous slab arrangement of reinforcement, makes to unify with beam and plate, and beam slab supporting capacity and antidetonation, fireproof performance are improved greatly.
Accompanying drawing explanation
Fig. 1 is superposed floor composition diagram of the present utility model
Fig. 2 is another composition diagram of superposed floor of the present utility model
Fig. 3 is two-beam type composition diagram of the present utility model
Fig. 4 is A-A sectional drawing of the present utility model
Fig. 5 is B-B sectional drawing of the present utility model
Fig. 6 is prestressing force precast beam stereogram of the present utility model
Fig. 7 is another prestressing force precast beam stereogram of the present utility model
Fig. 8 is prestressed cored slab stereogram of the present utility model
Fig. 9 is another prestressed cored slab stereogram of the present utility model
The specific embodiment
Referring to Fig. 1 to Fig. 9, a kind of prestressed cored slab superposed floor providing at the utility model, comprise prestressed cored slab 1, prestressing force precast beam 2 and cast-in-situ reinforced concrete overlapping layers 3, described prestressed cored slab is longitudinally provided with some through holes 11, plate end through hole top is provided with the open slot 12 of certain length, and described prestressed cored slab 1 bottom is longitudinally embedded with prestress wire 13, described prestressing force precast beam 2 is one of independence or is combined side by side by two beams, in beam body, be longitudinally embedded with the prestress wire 21 as main muscle, on described prestressing force precast beam 2, longitudinally interval is embedded with shearing-resistant member 22, shearing-resistant member is reinforcing bar or shaped steel, shearing-resistant member exposes prestressing force precast beam 2 upper surface certain lengths and imbeds in cast-in-situ steel concrete muscle concrete overlapping layers 3, described cast-in-situ reinforced concrete overlapping layers 3 is located at prestressing force precast beam 2 and prestressed cored slab 1 top, and be filled in the through hole 11 and open slot 12 of prestressed cored slab 1 end, root through hole at open slot 12 is provided with sealing of hole plug 14.In prestressed cored slab 1, establish through hole, can save concrete material stressed in the situation that, lightened plate floor deadweight not affecting plate; It is for superimposed sheet rear pouring concrete can pour in plate end through hole 11 and open slot 12 that plate end is established open slot 12, makes the old and new's concrete binding ability better, increases the shear strength of plate end simultaneously; In prestressed cored slab 1, bury steel strand 13 underground as main muscle, can greatly reduce the radical of cloth muscle, improve the supporting capacity of plate; Equally, in prestressing force precast beam, bury steel strand 21 underground as main muscle, can reduce steel using amount, can improve again the bending rigidity of beam, reduce beam section height.The beam being formed side by side by two prestressing force precast beams 2 can avoid single beam conduct oneself with dignity excessive, lift difficult problem, this method does not affect stress performance and the cost of beam.It is in order to meet the overlapping layers shear strength of the old and new's concrete bonding surface that prestressing force precast beam 2 upper surfaces are buried shearing-resistant member 22 underground, also can utilize the stirrup of beam as shearing-resistant member in the present embodiment, two obtains at one stroke.The cast-in-situ reinforced concrete overlapping layers 3 on beam slab top unifies beam slab, has both improved the globality of structure, has strengthened again the force intensity that is subject to of beam slab, makes simply supported beam or plate become continuous beam, plate, and bending resistance improves greatly; In plate end through hole 11, fill concrete, both can improve the interlocking of the old and new's concrete, can strengthen again pressurized zone sectional area in girder span and the shear strength of plate end.
Referring to Fig. 4, Fig. 5, Fig. 8, Fig. 9, in the above-described embodiment providing at the utility model, the through hole 11 of described prestressed cored slab 1 is for bullet-headed or oval or with the rectangle of fillet, the upper surface of described prestressed cored slab 1 is provided with longitudinal fluting or male and fomale(M&F) 15.Plate through hole 11 adopts non-circular irregularly-shaped hole, can not affect under the prerequisite of plate intensity, improves the hollow rate of plate, and lightened plate floor deadweight, saves concrete; Upper surface establishes groove and male and fomale(M&F) 15 is the shear strength in order to improve the old and new's concrete bonding surface, the gross thickness that increases new poured concrete, the anti-ability that starts of raising rear pouring concrete.
Referring to Fig. 8, Fig. 9, in the above-described embodiment providing at the utility model, the prestress wire 13 in described prestressed cored slab 1 stretches out plate end certain length.Steel strand 13 in plate anchor in the rear pouring concrete of beam 2, can improve the globality of structure.
Referring to Fig. 2, Fig. 7, in the above-described embodiment providing at the utility model, described shearing-resistant member 22 is angle steel, and angle steel two ends are provided with flange 221, and certain length in prestressing force precast beam 2 bodies is stretched in angle steel lower end, and the surperficial certain length of prestressing force precast beam 2 is exposed in upper end.The angle steel of end flange is as the shearing-resistant member of new poured concrete bonding surface, and its shear behavior is good, and because end anchorage performance is good, so new poured concrete is anti-, and to start ability strong.
Referring to Fig. 1, in the above-described embodiment providing at the utility model, in the beam body of described prestressing force precast beam 2, longitudinally interval is embedded with light foam piece or hollow box 23.In beam body, bury bending resistance, shear strength that the fast or hollow box of foam can not reduce beam underground, but precast beam weight reduction, lift, transport more convenient, erection equipment is required to reduce.
Referring to Fig. 6, Fig. 7, in the above-described embodiment providing at the utility model, the steel strand 21 of described prestressing force precast beam 2 stretch out beam-ends certain length, and steel strand 21 ends are provided with right angle crotch; The top of prestressing force precast beam 2 is also longitudinally embedded with prestress wire 24.When precast beam and post connect, the steel strand of precast beam must anchor in post, and need meet certain anchorage length requirement, establish the anchoring strength that right angle crotch can improve steel strand greatly.It is when preventing that bottom presstressed reinforcing steel from putting that prestress wire 24 is buried on the top of prestressing force precast beam underground, and crack does not appear in beam upper surface.
Referring to Fig. 1 to Fig. 5, in the above-described embodiment providing at the utility model, in described cast-in-situ reinforced concrete overlapping layers 3, be embedded with single-layer bidirectional steel mesh reinforcement 31.The two-way concrete slab net of in-situ layer can prevent that the shrinkage crack of concrete from producing, and improves the globality of structure simultaneously, at plate end, can also use as the negative muscle of plate, makes simply supported slab become continuous slab, improves the bending resistance of plate.
Referring to Fig. 4 to Fig. 5, in the above-described embodiment providing at the utility model, in the adjacent panel of described prestressed cored slab 1 seam, bottom is provided with elongated bending steel sheet 16, is vertically embedded with the continuous bending resistance tension rib 17 of longitudinal reinforcement net sheet or S shape.Bending steel sheet 16 in plate seam had both stitched the permanent formwork of concrete as plate, also can be used as the longitudinal reinforcement of plate simultaneously, bear the moment of flexure of fraction plate, and shear strength and globality that reinforced mesh in plate seam and the continuous bending resistance tension rib 17 of S shape can improve plate, the anti-performance that starts of improving new poured concrete, makes adjacent panel energy cooperative transformation.
Referring to Fig. 1 to Fig. 5, in the above-described embodiment providing at the utility model, the middle part soffit of described prestressed cored slab 1 laterally posts some carbon cloths 4, and cloth 4 is elongated is located at the adjacent prestressed cored slab 1 time of superposed floor continuously.The horizontal carbon cloth of plate soffit can make floor laterally bear certain moment of flexure, makes the contiguous prefabricated plate can be jointly stressed, improves overall performance and the transverse contraction intensity of superimposed sheet simultaneously, stops the shrinkage crack between plate seam to occur.

Claims (10)

1. a prestressed cored slab superposed floor, comprise prestressed cored slab, prestressing force precast beam and cast-in-situ reinforced concrete overlapping layers, it is characterized in that: described prestressed cored slab is longitudinally provided with some through holes, plate end through hole top is provided with the open slot of certain length, and described prestressed cored slab bottom is longitudinally embedded with prestress wire; Described prestressing force precast beam is one of independence or is combined side by side by two beams, in beam body, be longitudinally embedded with the prestress wire as main muscle, on described prestressing force precast beam, longitudinally interval is embedded with shearing-resistant member, shearing-resistant member is reinforcing bar or shaped steel, shearing-resistant member exposes precast beam upper surface certain length and imbeds in cast-in-situ steel concrete muscle concrete overlapping layers, described cast-in-situ reinforced concrete overlapping layers is located at prestressing force precast beam and prestressed cored slab top, and be filled in the through hole and open slot of prestressed cored slab end, in the root through hole of open slot, be provided with sealing of hole plug.
2. prestressed cored slab superposed floor as claimed in claim 1, the through hole that it is characterized in that described prestressed cored slab is bullet-headed or oval or with the rectangle of fillet, the upper surface of described prestressed cored slab is provided with longitudinal fluting or male and fomale(M&F).
3. prestressed cored slab superposed floor as claimed in claim 1, is characterized in that the prestress wire in described prestressed cored slab stretches out plate end certain length.
4. prestressed cored slab superposed floor as claimed in claim 1, is characterized in that described shearing-resistant member is rectangle hoop, and prestressing force precast beam surface certain length is exposed in upper end, and lower end extends prestressing force Prefabricated bar body bottom.
5. prestressed cored slab superposed floor as claimed in claim 1, is characterized in that described shearing-resistant member is angle steel, and angle steel two ends are provided with flange, and certain length in beam body is stretched in angle steel lower end, and prestressing force precast beam surface certain length is exposed in upper end.
6. prestressed cored slab superposed floor as claimed in claim 1, is characterized in that in the beam body of described prestressing force precast beam that longitudinally interval is embedded with light foam piece or hollow box.
7. prestressed cored slab superposed floor as claimed in claim 1, is characterized in that the steel strand of described prestressing force precast beam stretch out beam-ends certain length, and steel strand end is provided with right angle crotch, and the top of prestressing force precast beam is also longitudinally embedded with prestress wire.
8. prestressed cored slab superposed floor as claimed in claim 1, is characterized in that being embedded with single-layer bidirectional steel mesh reinforcement in described cast-in-situ reinforced concrete overlapping layers.
9. prestressed cored slab superposed floor as claimed in claim 1, is characterized in that in the adjacent panel seam of described prestressed cored slab, bottom is provided with elongated bending steel sheet, is vertically embedded with longitudinal reinforcement net sheet or the continuous tension rib of S shape.
10. prestressed cored slab superposed floor as claimed in claim 1, is characterized in that the middle part soffit of described prestressed cored slab laterally posts some carbon cloths, and cloth is elongated to be located under the adjacent prestressed cored slab of superposed floor continuously.
CN201420196181.5U 2014-04-22 2014-04-22 Prestress hollow slab laminated floor system Expired - Lifetime CN203905239U (en)

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CN106284787A (en) * 2016-08-05 2017-01-04 成都市第四建筑工程公司 Assembled superimposed sheet is installed and localization method
CN107620384A (en) * 2017-10-13 2018-01-23 湖南标迪夫节能科技有限公司 A kind of assembled steel reinforced concrete composite frame structure with cap
CN107642162A (en) * 2017-10-13 2018-01-30 湖南标迪夫节能科技有限公司 A kind of assembled arthitecutral structure
CN107663915A (en) * 2017-10-13 2018-02-06 湖南标迪夫节能科技有限公司 With supporting plate for edge of a wing harden structure among king's font girder steel
CN107663913A (en) * 2017-10-13 2018-02-06 湖南标迪夫节能科技有限公司 A kind of large span cavity floor assembled using convex beam
CN107663912A (en) * 2017-10-13 2018-02-06 湖南标迪夫节能科技有限公司 A kind of reinforced concrete large assembly rate storied building structure
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CN107663914A (en) * 2017-10-13 2018-02-06 湖南标迪夫节能科技有限公司 A kind of assembled architecture floor construction of steel reinforced concrete combination
CN107675824A (en) * 2017-10-13 2018-02-09 湖南标迪夫节能科技有限公司 Cavity board member for stress island superstructure
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CN107675825A (en) * 2017-10-13 2018-02-09 湖南标迪夫节能科技有限公司 The cavity floor structure of one Seed King Zee bar steel Z beam support
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CN107882239A (en) * 2017-10-13 2018-04-06 湖南标迪夫节能科技有限公司 A kind of assembling type steel structure longitudinal combination rib floor
CN107882229A (en) * 2017-10-13 2018-04-06 湖南标迪夫节能科技有限公司 A kind of assembled arthitecutral structure prefabricated using cavity body
CN107620384A (en) * 2017-10-13 2018-01-23 湖南标迪夫节能科技有限公司 A kind of assembled steel reinforced concrete composite frame structure with cap
CN110735492A (en) * 2019-10-28 2020-01-31 浙江中清大建筑产业化有限公司 Connecting structure of prestressed hollow composite slabs and construction method thereof
CN116657910A (en) * 2023-06-16 2023-08-29 中国建筑第四工程局有限公司 Formwork-free construction method for flat space structure top plate

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