CN112459327A - Close piece connection structure of two-way superimposed sheet - Google Patents
Close piece connection structure of two-way superimposed sheet Download PDFInfo
- Publication number
- CN112459327A CN112459327A CN202011382724.9A CN202011382724A CN112459327A CN 112459327 A CN112459327 A CN 112459327A CN 202011382724 A CN202011382724 A CN 202011382724A CN 112459327 A CN112459327 A CN 112459327A
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- China
- Prior art keywords
- prefabricated
- superimposed sheet
- slab
- way
- tight
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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
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/61—Connections for building structures in general of slab-shaped building elements with each other
- E04B1/6108—Connections for building structures in general of slab-shaped building elements with each other the frontal surfaces of the slabs connected together
- E04B1/612—Connections for building structures in general of slab-shaped building elements with each other the frontal surfaces of the slabs connected together by means between frontal surfaces
Abstract
The invention discloses a close splicing joint connecting structure of two-way composite slabs, which comprises prefabricated composite slabs, wherein two end parts of each prefabricated composite slab are spliced and leaned against each other, a cast-in-place concrete slab is arranged on each prefabricated composite slab, prefabricated steel bars are arranged in the prefabricated composite slabs, the main bodies of the prefabricated steel bars are arranged in the prefabricated composite slabs, two ends of each prefabricated steel bar extend out of the prefabricated composite slab, two end parts of each prefabricated steel bar are bent upwards in the prefabricated composite slabs to form folded line ribs, the folded line ribs extend out of the upper surfaces of the prefabricated composite slabs, and the extending sections of the folded line ribs are arranged in the cast-in-place concrete slab. The close piece joint connection structure of two-way superimposed sheet that this scheme of adoption designed has simple structure, the construction is simple and convenient, can satisfy the advantage of atress condition.
Description
Technical Field
The invention relates to an assembly type concrete connection node structure, in particular to a close splicing joint connection structure of a bidirectional laminated slab.
Background
At present, laminated slabs used in industrial and civil buildings are mainly steel bar truss plates and concrete laminated slabs, but the two types of slabs need to be spliced by a bottom plate when in use, so that a splicing seam joint problem which is difficult to solve is generated, a structure with a centralized national standard drawing is shown in a figure 1, and under the action of an earthquake, a splicing seam of the bottom plate is still a weak part of a laminated floor slab for resisting the earthquake, which is particularly characterized in that connecting steel bars at the splicing seam are disconnected, the splicing seam is cracked, a splicing layer and a cast-in-place layer are torn, a concrete bidirectional laminated slab cannot be formed, bidirectional stress of the laminated slab is realized, and the crack resistance, the rigidity and the bearing capacity of the laminated slab cannot be fully exerted.
In addition, a post-cast strip structure with a concentrated national standard drawing is adopted, as shown in fig. 2, due to the fact that the external steel bars are arranged around the prefabricated composite slab, problems exist in the building, manufacturing and construction field installation processes (after the prefabricated composite slab on the left side is installed, the right side composite slab is easy to collide with the left side steel bars during hoisting, and installation is difficult).
Therefore, the technical personnel in the field strive to develop a bidirectional laminated slab close-splicing seam connecting structure which has simple structure and convenient construction and can meet the stress condition.
Disclosure of Invention
In view of the above defects in the prior art, the technical problem to be solved by the present invention is to provide a close-splicing joint connection structure for two-way composite slabs, which is used to solve the problems that under the action of an earthquake, the connection steel bars of the two-way composite slabs at the splicing joints are easy to be broken, the splicing joints are easy to crack, the laminated layer and the cast-in-place layer are torn, and the components are difficult to manufacture and install.
In order to achieve the purpose, the invention provides a close splicing and connecting structure for two-way composite slabs, which comprises prefabricated composite slabs, wherein two end parts of each prefabricated composite slab are spliced and leaned against each other, cast-in-place concrete slabs are arranged on the prefabricated composite slabs, prefabricated steel bars are arranged in the prefabricated composite slabs, the main bodies of the prefabricated steel bars are arranged in the prefabricated composite slabs, two ends of each prefabricated steel bar extend out of the prefabricated composite slabs, two end parts of each prefabricated steel bar are bent upwards in the prefabricated composite slabs to form fold line ribs, the fold line ribs extend out of the upper surfaces of the prefabricated composite slabs, and extending sections of the fold line ribs are arranged in the cast-in-place concrete slabs.
Furthermore, the bending part of the broken line rib is a right angle.
Furthermore, the bending part of the broken line rib is an arc.
Further, the fold line ribs are bent upwards along the inner contour of the end part of the prefabricated composite slab.
Further, the broken line muscle leans out to buckle and stretches out, and two are pieced together crisscross the setting of broken line muscle by the prefabricated superimposed sheet that sets up each other.
Further, it is characterized in that: and the end part of the folding line rib is bent towards the center of the prefabricated laminated slab where the folding line rib is positioned to form a folding section.
Further, additional steel bars are further arranged in the cast-in-place concrete slab and span splicing seams between the two splicing and leaning prefabricated composite slabs.
Further, the inflection section is horizontally arranged.
The invention has the beneficial effects that: the end of the embedded steel bar is bent to extend into the cast-in-place concrete layer, so that the connection between the prefabricated plate and the cast-in-place plate at the close joint can be enhanced, the integrity is improved, the stress performance of the joint is enhanced, and the stress damage characteristic of the bidirectional plate is met.
The form of the combination of the broken line steel and the additional steel bars is adopted, the integral rigidity of the abutted seam is enhanced, the force transmission of the stressed steel bars on the two sides of the abutted seam can be better realized, the bending bearing capacity is greatly improved, and the laminated slab can form a two-way slab stressed state.
By adopting the connecting structure, no steel bar extends out of the end of the prefabricated plate at the splicing joint, so that the standardized manufacture of a mould and the mechanized flow production of a factory are facilitated, the production efficiency is improved, the collision between the steel bars during field installation can be reduced, the field assembling speed is accelerated, and the splicing construction template is reduced due to the fact that a splicing joint-free post-pouring belt is constructed on the field.
Drawings
FIG. 1 is a schematic view of a prior art laminated slab splice construction;
FIG. 2 is a schematic view of another prior art laminated slab splice construction;
FIG. 3 is a schematic view of a tight-fit joint connecting structure of a two-way laminated slab according to a first embodiment of the present invention;
FIG. 4 is a schematic view of a second embodiment of a tight-fit joint structure of a two-way composite slab according to the present invention;
FIG. 5 is a schematic view of a third embodiment of a tight-fit joint structure of a two-way composite slab according to the present invention;
FIG. 6 is a fourth schematic view of a tight-splicing joint connection structure of a two-way composite slab according to an embodiment of the present invention.
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.
Example one
As shown in figure 3, the close splicing seam connecting structure of the two-way composite slab comprises two prefabricated composite slabs 1, wherein the two end parts of each prefabricated composite slab are spliced mutually and lean against the arrangement, splicing seams are arranged between the two prefabricated composite slabs 1 which are spliced mutually, and prefabricated steel bars 2 are arranged in the prefabricated composite slabs 1.
The main part of prefabricated reinforcing bar 2 is in prefabricated superimposed sheet 1, and the muscle is stretched out at 2 both ends of prefabricated reinforcing bar and prefabricated superimposed sheet 1, and 2 both ends of prefabricated reinforcing bar are upwards buckled in prefabricated superimposed sheet 1 and are formed broken line muscle 3, and the department of buckling of broken line muscle 3 is the right angle, and the vertical upwards buckling of prefabricated reinforcing bar 2 in the prefabricated superimposed sheet 1 of broken line muscle 3 perpendicular to.
The fold line ribs 3 extend out of the upper surface of the prefabricated composite slab 1, the additional steel bars 4 stretch across the splicing seams between the two spliced prefabricated composite slabs 1, cast-in-place concrete slabs 6 are poured on the spliced prefabricated composite slabs 1, and the extending parts of the additional steel bars 4 and the fold line ribs 3 are buried in the cast-in-place concrete slabs 6.
Example two
As shown in FIG. 4, a close piece joint connection structure of two-way superimposed sheet, including two liang of tip each other pieces together lean on prefabricated superimposed sheet 1 that sets up, have the concatenation seam between two prefabricated superimposed sheets 1 that splice each other, be equipped with prefabricated reinforcing bar 2 in the prefabricated superimposed sheet 1.
The main part of prefabricated reinforcing bar 2 is in prefabricated superimposed sheet 1, and the muscle is stretched out at 2 both ends of prefabricated reinforcing bar and prefabricated superimposed sheet 1, and 2 both ends of prefabricated reinforcing bar are upwards buckled in prefabricated superimposed sheet 1 and are formed broken line muscle 3, and the department of buckling of broken line muscle 3 is the right angle, and the vertical upwards buckling of prefabricated reinforcing bar 2 in the prefabricated superimposed sheet 1 of broken line muscle 3 perpendicular to.
Folding line muscle 3 stretches out from 1 upper surface of prefabricated superimposed sheet, and 3 tip of folding line muscle inwards buckles and forms inflection section 5, and 3 tip of folding line muscle are buckled to 1 center of prefabricated superimposed sheet at its place promptly and are formed inflection section 5, and inflection section 5 level sets up. The reverse-folding section 5 can further improve the overall rigidity of the abutted seams, improve the binding force of the precast steel bars 2 and the cast-in-place concrete plate 6, increase the binding force of the precast laminated slab 1 and the cast-in-place concrete plate 6, and further improve the overall bending bearing capacity of the bidirectional laminated slab.
The additional steel bars 4 span the splicing seams between the two spliced prefabricated composite slabs 1, cast-in-place concrete slabs 6 are poured on the spliced prefabricated composite slabs 1, and the extending parts of the broken line ribs 3, the folded sections 5 and the additional steel bars 4 are all poured and buried in the cast-in-place concrete slabs 6. (addition of reverse fold)
EXAMPLE III
As shown in fig. 5, the main body of the prefabricated steel bar 2 is in the prefabricated composite slab 1, the two ends of the prefabricated steel bar 2 extend out of the prefabricated composite slab 1, the two ends of the prefabricated steel bar 2 are bent upwards in the prefabricated composite slab 1 to form the fold line ribs 3, the fold line ribs 3 are bent upwards along the inner contour of the end of the prefabricated composite slab 1, the cross section of the prefabricated composite slab 1 in the embodiment is inverted trapezoid, and therefore the bending direction of the fold line ribs 3 is outwards and obliquely upwards.
Folding line muscle 3 stretches out from 1 upper surface of prefabricated superimposed sheet, and 3 tip of folding line muscle inwards buckles and forms inflection section 5, and 3 tip of folding line muscle are buckled to 1 center of prefabricated superimposed sheet at its place promptly and are formed inflection section 5, and inflection section 5 level sets up. The reverse-folding section 5 can further improve the overall rigidity of the abutted seams, improve the binding force of the precast steel bars 2 and the cast-in-place concrete plate 6, increase the binding force of the precast laminated slab 1 and the cast-in-place concrete plate 6, and further improve the overall bending bearing capacity of the bidirectional laminated slab.
The additional steel bars 4 span the splicing seams between the two spliced prefabricated composite slabs 1, cast-in-place concrete slabs 6 are poured on the spliced prefabricated composite slabs 1, and the extending parts of the broken line ribs 3, the folded sections 5 and the additional steel bars 4 are all poured and buried in the cast-in-place concrete slabs 6.
Example four
As shown in fig. 6, the main part of prefabricated steel bar 2 is in prefabricated superimposed sheet 1, and the muscle is stretched out at 2 both ends of prefabricated steel bar and prefabricated superimposed sheet 1, and 2 both ends of prefabricated steel bar are upwards buckled in prefabricated superimposed sheet 1 and are formed broken line muscle 3, and 3 outer slopes of the prefabricated superimposed sheet 1 that is located of broken line muscle are buckled and are stretched out, and two pieces together are leaned on broken line muscle 3 of prefabricated superimposed sheet 1 that sets up and are crisscross setting each other in concatenation department.
Folding line muscle 3 stretches out from 1 upper surface of prefabricated superimposed sheet, and 3 tip of folding line muscle inwards buckles and forms inflection section 5, and 3 tip of folding line muscle are buckled to 1 center of prefabricated superimposed sheet at its place promptly and are formed inflection section 5, and inflection section 5 level sets up. The reverse-folding section 5 can further improve the overall rigidity of the abutted seams, improve the binding force of the precast steel bars 2 and the cast-in-place concrete plate 6, increase the binding force of the precast laminated slab 1 and the cast-in-place concrete plate 6, and further improve the overall bending bearing capacity of the bidirectional laminated slab.
The additional steel bars 4 span the splicing seams between the two spliced prefabricated composite slabs 1, cast-in-place concrete slabs 6 are poured on the spliced prefabricated composite slabs 1, and the extending parts of the broken line ribs 3, the folded sections 5 and the additional steel bars 4 are all poured and buried in the cast-in-place concrete slabs 6.
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 (8)
1. The utility model provides a close piece connection structure of two-way superimposed sheet, includes that two liang of tip pieces are pieced together mutually and are leaned on the prefabricated superimposed sheet that sets up, be equipped with cast-in-place concrete board on the prefabricated superimposed sheet, be equipped with precast reinforcement in the prefabricated superimposed sheet, precast reinforcement's main part is in the prefabricated superimposed sheet, the muscle that stretches out at precast reinforcement both ends is gone out prefabricated superimposed sheet, characterized by: the two end parts of the prefabricated steel bars are bent upwards in the prefabricated composite slab to form fold line ribs, the fold line ribs extend out of the upper surface of the prefabricated composite slab, and the extending sections of the fold line ribs are arranged in the cast-in-place concrete slab.
2. The tight-fit joint connecting structure of the two-way superimposed sheet as claimed in claim 1, wherein: the bending part of the broken line rib is a right angle.
3. The tight-fit joint connecting structure of the two-way superimposed sheet as claimed in claim 1, wherein: the bending part of the broken line rib is an arc.
4. The tight-fit joint connecting structure of the two-way superimposed sheet as claimed in claim 1, wherein: the fold line ribs are bent upwards along the inner contour of the end part of the prefabricated composite slab.
5. The tight-fit joint connecting structure of the two-way superimposed sheet as claimed in claim 1, wherein: the broken line muscle leans out to buckle and stretches out, and two pieces together are leaned on the broken line muscle looks alternate setting of the prefabricated superimposed sheet that sets up.
6. The tight-fit joint structure of two-way laminated plates as claimed in any one of claims 2 to 5, wherein: and the end part of the folding line rib is bent towards the center of the prefabricated laminated slab where the folding line rib is positioned to form a folding section.
7. The tight-fit joint connecting structure of the two-way superimposed sheet as claimed in claim 1, wherein: and an additional steel bar is further arranged in the cast-in-place concrete slab and spans the splicing seam between the two splicing and leaning prefabricated composite slabs.
8. The tight-fit joint connecting structure of the two-way superimposed sheet as claimed in claim 6, wherein: the inflection section is horizontally arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011382724.9A CN112459327A (en) | 2020-12-01 | 2020-12-01 | Close piece connection structure of two-way superimposed sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011382724.9A CN112459327A (en) | 2020-12-01 | 2020-12-01 | Close piece connection structure of two-way superimposed sheet |
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| Publication Number | Publication Date |
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| CN112459327A true CN112459327A (en) | 2021-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011382724.9A Pending CN112459327A (en) | 2020-12-01 | 2020-12-01 | Close piece connection structure of two-way superimposed sheet |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206396966U (en) * | 2017-01-09 | 2017-08-11 | 北京智慧云建科技有限公司 | A kind of assembled laminated floor slab plate seam node component |
| CN207582764U (en) * | 2017-12-04 | 2018-07-06 | 浙江大学 | A kind of close spelling laminated floor slab connecting joint structure of end fluting |
| CN109898714A (en) * | 2019-04-02 | 2019-06-18 | 上海应用技术大学 | The close spelling connection structure of fibre sheet material concrete bidirectional laminated slab and implementation method |
| WO2019206194A1 (en) * | 2018-04-25 | 2019-10-31 | Li Cangzhu | Prefabricated floor slab, connection structure thereof and construction method therefor |
| CN210067175U (en) * | 2019-02-27 | 2020-02-14 | 中民筑友科技投资有限公司 | Bidirectional composite floor slab |
-
2020
- 2020-12-01 CN CN202011382724.9A patent/CN112459327A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206396966U (en) * | 2017-01-09 | 2017-08-11 | 北京智慧云建科技有限公司 | A kind of assembled laminated floor slab plate seam node component |
| CN207582764U (en) * | 2017-12-04 | 2018-07-06 | 浙江大学 | A kind of close spelling laminated floor slab connecting joint structure of end fluting |
| WO2019206194A1 (en) * | 2018-04-25 | 2019-10-31 | Li Cangzhu | Prefabricated floor slab, connection structure thereof and construction method therefor |
| CN210067175U (en) * | 2019-02-27 | 2020-02-14 | 中民筑友科技投资有限公司 | Bidirectional composite floor slab |
| CN109898714A (en) * | 2019-04-02 | 2019-06-18 | 上海应用技术大学 | The close spelling connection structure of fibre sheet material concrete bidirectional laminated slab and implementation method |
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Application publication date: 20210309 |