CN112160478A - Non-stretching rib combined composite slab with prefabricated prestressed concrete ribs - Google Patents
Non-stretching rib combined composite slab with prefabricated prestressed concrete ribs Download PDFInfo
- Publication number
- CN112160478A CN112160478A CN202010915708.5A CN202010915708A CN112160478A CN 112160478 A CN112160478 A CN 112160478A CN 202010915708 A CN202010915708 A CN 202010915708A CN 112160478 A CN112160478 A CN 112160478A
- Authority
- CN
- China
- Prior art keywords
- concrete
- ribs
- rib
- stretch
- bottom plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
- E04B5/17—Floor structures partly formed in situ
- E04B5/23—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
The invention discloses a non-stretching rib combined composite slab with prefabricated prestressed concrete ribs, which comprises a bottom plate (1), wherein longitudinal ribs (2) and transverse ribs (3) are arranged in the bottom plate (1), a plurality of concrete ribs (4) are arranged on the bottom plate (1), the concrete ribs (4) are arranged in the direction of the longitudinal ribs (2) in a through manner, a plurality of stirrups (5) are arranged in the concrete ribs (4), and the bottoms of the stirrups (5) are fixedly arranged on the transverse ribs (3). The scheme can increase the span of the bottom plate and simplify the production process.
Description
Technical Field
The invention relates to a prefabricated floor slab, in particular to a non-stretching combined composite slab with prefabricated prestressed concrete ribs.
Background
In fabricated buildings, several prefabricated composite slabs are mainstream at present, for example, the maximum span of the prefabricated truss steel bar composite slab does not exceed 6 m. It is currently the main flow to increase the span of a prefabricated floor by prestressing the prefabricated floor. The prefabricated prestressed bottom plate is produced by a long-line mould, the length of a common long-line mould film reaches more than 100m, and a plurality of prestressed ribs are tensioned at the same time. Due to the production process, the prestressed tendons are not uniformly tensioned, so that the prefabricated bottom plate is not uniformly warped and deformed, and the engineering quality is seriously affected.
Furthermore, the prefabricated composite slab generally has ribs on one side. When construction hoist and mount, often prefabricated superimposed sheet goes out the muscle can interfere with roof beam gluten, stirrup, influences the hoist and mount progress, for making prefabricated superimposed sheet can hoist into, often can break the camber stirrup off with the fingers and thumb, influences the engineering quality.
Therefore, those skilled in the art have been devoted to develop a non-stretch-rib composite laminated slab with a precast prestressed concrete rib, which has high strength and large span.
Disclosure of Invention
In view of the above defects in the prior art, the technical problem to be solved by the invention is to provide a non-stretch-rib combined composite slab with prefabricated prestressed concrete ribs, which can improve the out-of-plane rigidity of the composite slab, thereby increasing the span of a bottom plate, and simultaneously improve the production process of the prefabricated composite slab compared with the prior art, and the prefabricated composite slab does not have ribs, and the problem that the ribs of the on-site prefabricated composite slab interfere with beam ribs and stirrup in the hoisting process is well solved by placing the ribs on site.
In order to achieve the purpose, the invention provides a non-stretching rib combined composite slab with a prefabricated prestressed concrete rib, which comprises a bottom plate, wherein longitudinal ribs and transverse ribs are arranged in the bottom plate, and the composite slab is characterized in that: the concrete rib is arranged along the longitudinal bar direction, a plurality of stirrups are arranged in the concrete rib, and the bottoms of the stirrups are fixedly arranged on the transverse bars.
Furthermore, a metal corrugated pipe is arranged in the middle of the concrete rib in the whole length direction and is arranged in the stirrup.
Furthermore, the concrete rib is internally provided with a plurality of prestressed steel bars in a through manner, and the plurality of prestressed steel bars are all arranged in the stirrups.
Further, the cross section of the concrete rib is isosceles trapezoid.
Furthermore, the number of the prestressed reinforcements is four, and two prestressed reinforcements are arranged in the concrete rib at the upper part and the lower part respectively.
Furthermore, the stirrup is of an isosceles trapezoid structure.
Furthermore, the prestressed reinforcement is arranged at the position close to four vertexes of the reinforcement of the isosceles trapezoid structure.
Further, shear key grooves are formed in the two waist line surfaces of the isosceles trapezoid-shaped concrete ribs.
Further, the shear key grooves are provided at equal intervals along the length direction of the concrete rib.
Further, the lower part of the shear key groove is combined with the concrete of the bottom plate, and the upper part of the shear key groove is used for being combined with the cast-in-place layer.
The invention has the beneficial effects that: according to the invention, the concrete ribs with the stirrups inside and the stirrups are added on the bottom plate and fixedly connected with the transverse ribs in the bottom plate, so that the out-of-plane rigidity of the bottom plate is increased, the span of the bottom plate is increased, and the purpose of making a prefabricated laminated slab with the span of more than 6m is achieved.
The middle metal corrugated pipe is arranged in a through-length mode, the metal corrugated pipe replaces the bottom plate side face to form the rib through inserting the reinforcing steel bars, and therefore the problem that the rib is formed in the prefabricated laminated slab in the hoisting process and the beam reinforcing steel bars interfere is solved.
Four prestressing tendons respectively arrange two from top to bottom along the cross-section, stretch-draw simultaneously during production, can solve present superimposed sheet unilateral stretch-draw prestressing tendons and appear stretching-draw inhomogeneous to lead to the condition that prefabricated bottom plate appears inhomogeneous warpage.
The stirrups with the isosceles trapezoid structure and the concrete ribs with the isosceles trapezoid outer outlines can be better combined with the prefabricated bottom plate and the prefabricated concrete ribs, and prestress is transferred to the whole concrete bottom plate, so that the prefabricated concrete bottom plate has larger span; the shape characteristic of the isosceles trapezoid of the prestressed concrete rib can embed and fix the prestressed concrete rib on the bottom plate to form the embedding and fixing on the structure; the two waist line faces of the isosceles trapezoid are provided with the shear key slots at equal intervals, the shear key slots can improve the combining capacity of the precast concrete ribs and the precast bottom plates, and meanwhile, the combining capacity of the whole concrete bottom plate and the cast-in-place layer can also be improved.
Drawings
FIG. 1 is a schematic structural view of a non-stretch-rib composite slab with pre-fabricated prestressed concrete ribs according to the present invention;
FIG. 2 is an enlarged view at A in FIG. 1;
FIG. 3 is a perspective view of a non-stretch-rib composite slab with pre-fabricated prestressed concrete ribs according to the present invention;
fig. 4 is an enlarged view at B in fig. 3.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples, wherein the terms "upper", "lower", "left", "right", "inner", "outer", and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings, which is for convenience and simplicity of description, and does not indicate or imply that the referenced devices or components must be in a particular orientation, constructed and operated in a particular manner, and thus should not be construed as limiting the present invention. The terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1 to 4, the invention provides a non-stretching combined composite slab with prefabricated prestressed concrete ribs, which comprises a bottom plate 1, wherein longitudinal ribs 2 and transverse ribs 3 are arranged in the bottom plate 1, the longitudinal ribs 2 and the transverse ribs 3 are arranged perpendicularly and crosswise, a plurality of concrete ribs 4 are arranged on the bottom plate 1 at equal intervals, the concrete ribs 4 are arranged along the longitudinal ribs 2 in a through length manner, the concrete ribs 4 are arranged above one longitudinal rib 2, a plurality of stirrups 5 are arranged in the concrete ribs 4, two ends of the bottoms of the stirrups 5 are fixedly arranged on the transverse ribs 3, and two ends of the bottoms of the stirrups 5 are arranged on two sides of one longitudinal rib 2. Specifically, the cross section of concrete rib 4 is isosceles trapezoid, and stirrup 5 is isosceles trapezoid structure and is used for supporting isosceles trapezoid's concrete rib. The concrete rib and the stirrup that design like this can be better combine precast bottom plate and precast concrete rib, transmit prestressing force and make this precast concrete bottom plate accomplish bigger span for whole concrete bottom plate.
The metal corrugated pipe 7 is arranged in the middle of the concrete rib 4 in the whole length mode, and the metal corrugated pipe 7 is arranged in the inner range of the stirrup 5. The middle metal corrugated pipe is arranged in a through-length mode, the metal corrugated pipe replaces the side face of the bottom plate to form the ribs through inserting the steel bars, and the ribs are not arranged at the two ends of the bottom plate, so that the problem of rib and beam steel bar interference of the prefabricated laminated slab in the hoisting process is solved. And the production mold is simple, the construction is convenient, and the operation is simple.
The four prestressed reinforcements 8 are arranged near the periphery of the metal corrugated pipe 7 and at the positions close to the four vertexes of the stirrup 5 of the isosceles trapezoid structure in a full-length mode, and the prestressed reinforcements 8 are also arranged within the stirrup 5, namely two pieces of prestressed reinforcements 8 are arranged in the concrete rib 4 up and down respectively. Four prestressing tendons respectively arrange two from top to bottom along the cross-section, stretch-draw simultaneously during production, can solve present superimposed sheet unilateral stretch-draw prestressing tendons and appear stretching-draw inhomogeneous to lead to the condition that prefabricated bottom plate appears inhomogeneous warpage. The prestressing force of the upper prestressing steel bar and the lower prestressing steel bar of the concrete rib are different, and the upper prestressing steel bar is small and the lower prestressing steel bar is large.
And shear key grooves 9 are arranged on the two waist line surfaces of the isosceles trapezoid-shaped concrete ribs 4. The shear key grooves 9 are provided at equal intervals along the length direction of the concrete rib 4. The lower part of the shear key slot 9 is combined with the concrete of the bottom plate 1, the upper part of the shear key slot 9 exposed out of the bottom plate 1 is used for being combined with a cast-in-place layer, the construction sequence is that the concrete rib 4 is finished firstly, the shear key slot 9 is arranged, and then the concrete of the bottom plate 1 is poured. The two waist line faces of the isosceles trapezoid are provided with the shear key slots at equal intervals, the shear key slots can improve the combining capacity of the precast concrete ribs and the precast bottom plates, and meanwhile, the combining capacity of the whole concrete bottom plate and the cast-in-place layer can also be improved. The non-stretching combined composite floor slab with the prefabricated prestressed concrete ribs adopts a combined prefabrication mode, the concrete ribs are prefabricated firstly, and then the prefabricated concrete ribs and the bottom plate are combined and formed.
The prefabricated prestressed concrete rib is produced in an inverted mode by using a long tire membrane, and is cut according to the sizes of different lengths required by actual engineering. And binding the cut concrete ribs and the prefabricated bottom plate steel bars, and pouring concrete to form the non-stretching rib combined composite slab with the prefabricated prestressed concrete ribs.
The bottom plate with the concrete ribs and the cast-in-place layer form a final floor slab, and the final floor slab can be made into a solid composite slab or a hollow composite slab according to actual engineering requirements.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (10)
1. The utility model provides a take not stretch out muscle combination superimposed sheet of prefabricated prestressed concrete rib, includes bottom plate (1), be equipped with in bottom plate (1) and indulge muscle (2) and horizontal muscle (3), characterized by: be equipped with a plurality of concrete ribs (4) on bottom plate (1), concrete rib (4) along indulge muscle (2) direction and lead to long setting, be equipped with a plurality of stirrups (5) in concrete rib (4), stirrup (5) bottom is fixed to be established on horizontal muscle (3).
2. The non-stretch combined composite slab with the precast prestressed concrete ribs as recited in claim 1, wherein: the concrete rib (4) is internally provided with a metal corrugated pipe (7) in the whole length of the middle part, and the metal corrugated pipe (7) is arranged in the stirrup (5).
3. The non-stretch combined composite slab with the precast prestressed concrete ribs as recited in claim 1, wherein: the concrete rib (4) inner through length is provided with a plurality of prestressed reinforcements (8), and the plurality of prestressed reinforcements (8) are all arranged in the stirrups (5).
4. The non-stretch combined composite slab with the precast prestressed concrete ribs as recited in claim 1, wherein: the cross section of the concrete rib (4) is isosceles trapezoid.
5. The non-stretch-rib composite laminated slab with the precast prestressed concrete ribs as recited in claim 3, wherein: the number of the prestressed reinforcements (8) is four, and two prestressed reinforcements (8) are arranged in the concrete rib (4) up and down respectively.
6. The non-stretch-rib composite laminated slab with the precast prestressed concrete ribs as recited in claim 4, wherein: the stirrups (5) are of isosceles trapezoid structures.
7. The non-stretch combined composite slab with the precast prestressed concrete ribs as recited in claims 5 and 6, wherein: the prestressed reinforcement (8) is arranged at the position close to four vertexes of the reinforcement (5) of the isosceles trapezoid structure.
8. The non-stretch-rib composite laminated slab with the precast prestressed concrete ribs as recited in claim 4, wherein: and shear key grooves (9) are arranged on the two waist line surfaces of the isosceles trapezoid concrete ribs (4).
9. The non-stretch combined composite slab with the precast prestressed concrete ribs as recited in claim 8, wherein: the shear key grooves (9) are arranged at equal intervals along the length direction of the concrete rib (4).
10. The non-stretch combined composite slab with the precast prestressed concrete ribs as recited in claim 8, wherein: the lower part of the shear key groove (9) is combined with the concrete of the bottom plate (1), and the upper part of the shear key groove (9) is used for being combined with a cast-in-situ layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010915708.5A CN112160478A (en) | 2020-09-03 | 2020-09-03 | Non-stretching rib combined composite slab with prefabricated prestressed concrete ribs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010915708.5A CN112160478A (en) | 2020-09-03 | 2020-09-03 | Non-stretching rib combined composite slab with prefabricated prestressed concrete ribs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112160478A true CN112160478A (en) | 2021-01-01 |
Family
ID=73857584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010915708.5A Pending CN112160478A (en) | 2020-09-03 | 2020-09-03 | Non-stretching rib combined composite slab with prefabricated prestressed concrete ribs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112160478A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114197744A (en) * | 2021-12-16 | 2022-03-18 | 上海砼谦建筑科技有限公司 | Integrated prefabricated plate |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB720313A (en) * | 1952-03-26 | 1954-12-15 | Udalls Prestressed Concrete Lt | Improvements in or relating to reinforced concrete beams |
| CN101736838A (en) * | 2009-12-29 | 2010-06-16 | 吴方伯 | Superimposed and prestressed reinforced concrete precast panel with ribs |
| CN104032869A (en) * | 2013-03-05 | 2014-09-10 | 华汇工程设计集团股份有限公司 | Prefabricated composite floor slabs and prefabricated construction method thereof |
| CN204435638U (en) * | 2015-01-29 | 2015-07-01 | 济南轨道交通集团有限公司 | A kind of hollow laminated floor slab |
| CN205116537U (en) * | 2015-11-05 | 2016-03-30 | 中国建筑股份有限公司 | Reinforced concrete superimposed sheet and joint construction thereof |
| CN205475933U (en) * | 2016-02-23 | 2016-08-17 | 同济大学 | Two -way superimposed sheet of prestressed concrete |
| CN108118817A (en) * | 2018-02-06 | 2018-06-05 | 浙江大学建筑设计研究院有限公司 | A kind of plate end does not go out the unidirectional superimposed sheet bottom plate and its construction method of muscle |
| US20180283024A1 (en) * | 2017-04-04 | 2018-10-04 | Reigstad & Associates, Inc. | Load-carrying concrete floor structure and method for building the load-carrying concrete floor structure |
| CN208009742U (en) * | 2018-03-12 | 2018-10-26 | 许仲群 | A kind of embedded rib superimposed sheet of band and laminated structure member |
| CN110761399A (en) * | 2019-10-09 | 2020-02-07 | 中民筑友科技产业有限公司 | Vertical splicing structure of prefabricated wall board and assembling method thereof |
| CN110905112A (en) * | 2019-11-19 | 2020-03-24 | 辽宁省城乡市政工程集团有限责任公司 | Prefabricated section steel concrete laminated slab and construction process |
-
2020
- 2020-09-03 CN CN202010915708.5A patent/CN112160478A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB720313A (en) * | 1952-03-26 | 1954-12-15 | Udalls Prestressed Concrete Lt | Improvements in or relating to reinforced concrete beams |
| CN101736838A (en) * | 2009-12-29 | 2010-06-16 | 吴方伯 | Superimposed and prestressed reinforced concrete precast panel with ribs |
| CN104032869A (en) * | 2013-03-05 | 2014-09-10 | 华汇工程设计集团股份有限公司 | Prefabricated composite floor slabs and prefabricated construction method thereof |
| CN204435638U (en) * | 2015-01-29 | 2015-07-01 | 济南轨道交通集团有限公司 | A kind of hollow laminated floor slab |
| CN205116537U (en) * | 2015-11-05 | 2016-03-30 | 中国建筑股份有限公司 | Reinforced concrete superimposed sheet and joint construction thereof |
| CN205475933U (en) * | 2016-02-23 | 2016-08-17 | 同济大学 | Two -way superimposed sheet of prestressed concrete |
| US20180283024A1 (en) * | 2017-04-04 | 2018-10-04 | Reigstad & Associates, Inc. | Load-carrying concrete floor structure and method for building the load-carrying concrete floor structure |
| CN108118817A (en) * | 2018-02-06 | 2018-06-05 | 浙江大学建筑设计研究院有限公司 | A kind of plate end does not go out the unidirectional superimposed sheet bottom plate and its construction method of muscle |
| CN208009742U (en) * | 2018-03-12 | 2018-10-26 | 许仲群 | A kind of embedded rib superimposed sheet of band and laminated structure member |
| CN110761399A (en) * | 2019-10-09 | 2020-02-07 | 中民筑友科技产业有限公司 | Vertical splicing structure of prefabricated wall board and assembling method thereof |
| CN110905112A (en) * | 2019-11-19 | 2020-03-24 | 辽宁省城乡市政工程集团有限责任公司 | Prefabricated section steel concrete laminated slab and construction process |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114197744A (en) * | 2021-12-16 | 2022-03-18 | 上海砼谦建筑科技有限公司 | Integrated prefabricated plate |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR20090050520A (en) | Libbed half pc slab and manufacturing method of the same | |
| CN213174446U (en) | Assembled UHPC superimposed sheet shear force wall prefabricated construction with mandrel | |
| CN110005109A (en) | A kind of open flume type prestressed concrete overlapped slab | |
| CN113738007A (en) | Truss floor plate | |
| CN112160478A (en) | Non-stretching rib combined composite slab with prefabricated prestressed concrete ribs | |
| CN212865473U (en) | Prefabricated assembled type lane plate | |
| CN112031239A (en) | Precast concrete composite floor slab and manufacturing method thereof | |
| CN110185180B (en) | Partially prefabricated honeycomb type steel concrete beam-plate structure system | |
| CN115961536A (en) | Prefabricated assembled simply-supported and continuously-reinforced concrete combined bridge and construction method | |
| CN102051963A (en) | Concrete composite beam floor system and pouring method thereof | |
| CN112176850B (en) | Steel-UHPC combined structure shear connector and manufacturing and mounting method thereof | |
| CN212773148U (en) | T-shaped composite beam with truss precast slab partially wrapped with honeycomb steel | |
| CN210217164U (en) | Concrete 3D prints component casing and structure | |
| CN114214914A (en) | Steel bar protection layer cushion block combined component for prefabricated box girder | |
| CN102021955A (en) | Laminated slab | |
| CN114075855A (en) | Large-span bidirectional prestressed concrete multi-ribbed sandwich composite floor slab | |
| CN217000410U (en) | One-way no support self-supporting RPC superimposed sheet | |
| CN216340451U (en) | Thin-bottom prestressed concrete composite beam | |
| CN215593642U (en) | Bridge prestressed cast-in-situ continuous hollow slab beam | |
| CN217461119U (en) | Prefabricated slab with concrete rib truss | |
| CN216515072U (en) | Steel bar protection layer cushion block combined component for prefabricated box girder | |
| CN216740197U (en) | Welded steel bar-profile steel mesh combined connection shear wall structure | |
| CN216865654U (en) | Hollow superimposed sheet superstructure of reinforced concrete | |
| CN215716549U (en) | Steel bar truss superposed beam | |
| CN211368416U (en) | Prefabricated decking is with pouring template and decking |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210101 |