CN206554428U - A kind of precast stair connecting node - Google Patents
A kind of precast stair connecting node Download PDFInfo
- Publication number
- CN206554428U CN206554428U CN201720037618.4U CN201720037618U CN206554428U CN 206554428 U CN206554428 U CN 206554428U CN 201720037618 U CN201720037618 U CN 201720037618U CN 206554428 U CN206554428 U CN 206554428U
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- Prior art keywords
- stair
- reserved
- cement mortar
- floor
- bar
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Abstract
The utility model is a kind of precast stair, including floor decks and stair, and stair upper end is placed on the floor of upper strata；Filled between stair and upper strata floor using polyphenyl, and use cement mortar screeding；Stair lower end is placed on lower floor's floor, malthoid is separated between stair and lower floor's floor, and use cement mortar screeding；Prefabricated components to be connected are transported to scene during installation, adjust its position it is appropriate after, corresponding reinforcement location is corrected, the reserved reinforcing bar in position is then connected thereto and is attached, and the casting concrete grouting material at node, realize the reliable conduction of power；In the embedded spiral bar arranged along hole length direction in embedded bar periphery, the globality connected between component is strengthened；Connecting structure operation is relatively simple, with low cost, it is to avoid a large amount of bar splicings in junction, colligation, cast-in-place work, substantially increases operating efficiency, is relatively adapted to the connection in industrialized house construction between each component of precast stair and uses.
Description
Technical field
The utility model belongs to construction engineering technical field, and in particular to a kind of precast stair connection method.
Background technology
Traditional cast-in-situ stair construction is time-consuming long, and the construction of stair is undoubtedly most complicated, most test workman construction level, consumption
When one of most working portion.Traditional cast-in-situ stair construction needs to measure unwrapping wire, branch stair bed die, half space bottom
Mould, the bottom transverse direction and Reinforcement of colligation staircase boards, the side form of branch stair, colligation negative reinforcement, the upper reinforcement of staircase boards,
Template of marking time is propped up, concealment acceptance, casting concrete, maintenance, form removal continue the series of steps such as water seasoning, and process is very multiple
It is miscellaneous, a large amount of templates are not only expended, and technology is difficult to control to, after the completion of often resulting in every layer main body construction, construction speed
The problem of being stuck in stair construction.
In the stair work progress of current assembled architecture, stair and floor junction are all to use cast-in-place affixed side
Formula, stair termination reserves reinforcing bar to landing slab, then cast-in-place together with platform, and cast-in-place work is so carried out in narrow and small construction space
Make highly inconvenient, construction speed is slow, support rod member is more, and the strong point is limited by construction, clips intersection process；Secondly, it is public
The landing plate of project is built in the middle of floor, this region vertical member one-piece casting is influenceed, assembled architecture efficiency is influenceed
Much.
The content of the invention
In view of the above-mentioned problems, the utility model, which provides one kind, can simplify constructing operation, accelerating construction progress reduces work
The precast stair connection method of journey cost and cost.
The utility model is adopted the technical scheme that：A kind of precast stair connecting node, including floor decks beam, stair,
Reserved steel bar, reserved spiral bar, concrete grouting material, mortar, polyphenyl filling and cement mortar screeding layer and malthoid and cement
Mortar levelling layer；Stair upper and lower ends are placed on the beam of floor decks, and are connected by reserved steel bar with floor decks beam,
Reserved spiral bar is cased with outside reserved steel bar, reserved spiral bar can improve the fragility of component damage, play coagulation in about beam core
The effect of soil, to improve the bearing capacity of component；；The stair upper end and the seam crossing of floor decks beam are filled and water provided with polyphenyl
Cement mortar screed-coat, polyphenyl filling and cement mortar screeding layer top are mortar；The stair lower end connects with floor decks beam
Provided with malthoid and cement mortar screeding layer at seam, malthoid and cement mortar screeding layer top are mortar；
The stair include arrangement of reinforcement and reserving hole at the reserved cavity of stair longitudinal reinforcement, stair；Stair upper and lower end parts are equal
Reserving hole is offered, the reserved steel bar upper end insertion reserving hole of reserved spiral bar is cased with；Two stair longitudinal reinforcements are pre-
Box out and from top to bottom set along the direction of stair outside hole, and stair longitudinal reinforcement upper and lower ends are respectively equipped with one and bent up in stair
To strengthen anchorage effect；Arrangement of reinforcement surrounds the rectangular frame for leaving an opening in reserving hole at the reserved cavity of stair and extension is taken
It is connected at the reserved cavity of two stair on arrangement of reinforcement to improve intensity at node；Concrete grouting material is inoculated with reserving hole；
The reserved steel bar upper and lower ends are equipped with thread.
Make a kind of preferred technical scheme：It is described it is reserved connection reinforcing bar the lap of splice, be more than in non-Aseismic Design or
Equal to 25 times of itself diameter, 30 times of itself diameter are more than or equal in Aseismic Design.
As a kind of perferred technical scheme：The diameter of the reserving hole is more than 3 times of reserved steel bar diameter, and greatly
In or equal to 60mm；The length of the reserving hole is more than more than reserved steel bar length 50mm；The reserved steel bar is with reserving
After hole aligning, errors of centration is less than or equal to 2mm.
As a kind of perferred technical scheme：Filled in the polyphenyl filling and cement mortar screeding layer with polyphenyl, cement
Mortar levelling；Malthoid and the cement mortar screeding layer is separated with malthoid, and uses cement mortar screeding；The floor decks Liang Yu buildings
At terraced connecting node during casting concrete grouting material, grouting material uses ungauged regions lumnite cement, and its performance is met《Cement
Base grouting material application technology specification》1 relevant regulations.
The beneficial effects of the utility model are：（1）There is provided a kind of simply and efficiently construction measure, using shelf type building
Ladder is set, and scene only needs the wet trade that is in the milk on a small quantity, and without carrying out, reinforcement welding or sleeve connection etc. be complicated and operation of high cost,
Avoid a large amount of bar splicings in junction, colligation, cast-in-place work；The cast-in-place influence on the region vertical member is eliminated, significantly
Operating efficiency is improved, project progress is accelerated；（2）Using this overlapping mode, greatly accelerate construction speed and simplify
Wet trade process, such as template, support, limited working face, while decreasing construction costs and labour；（3）To building
Thing structure stress also has very big benefit, under seismic force effects, and when producing lateral force, shelf type stair can be slided by level
In-migration consumes seismic force, while this shelf type staircase component can largely be standardized production, for improving building
Assembly rate also has very big meaning.
Brief description of the drawings
Fig. 1 is that stair are connected schematic diagram with floor；
Fig. 2 is stair and upper strata floor connection diagram；
Fig. 3 is stair and lower floor's floor connection diagram；
Fig. 4 is reserving hole cut away view；
Fig. 5 is reserving hole top view；
Fig. 6 is reserved steel bar schematic diagram；
In figure：Arrangement of reinforcement, 2-3 are reserved at the reserved cavity of 1 floor decks beam, 2 stair, 2-1 stair longitudinal reinforcement, 2-2 stair
Hole, 3 reserved steel bars, 3-1 threads, 4 reserved spiral bars, 5 concrete grouting material, 6 mortars, the filling of 7 polyphenyl and cement mortar
Screed-coat, 8 malthoids and cement mortar screeding layer.
Embodiment
In order that technological means, creation characteristic, reached purpose and effect that the utility model is realized are easy to understand, under
The utility model content is expanded on further with reference to the utility model accompanying drawing for face.
A kind of precast stair connecting node, including floor decks beam 1, stair 2, reserved steel bar 3, reserved spiral bar 4, coagulation
Native grouting material 5, mortar 6, polyphenyl filling and cement mortar screeding layer 7 and malthoid and cement mortar screeding layer 8；About stair 2
Two ends are placed on floor decks beam 1, and are connected by reserved steel bar 3 with floor decks beam 1, are cased with outside reserved steel bar 3
Reserved spiral bar 4, reserved spiral bar 4 can improve the fragility of component damage, play a part of about beam core inner concrete, to carry
The bearing capacity of high component；The seam crossing of the upper end of stair 2 and floor decks beam 1 is filled and cement mortar screeding layer provided with polyphenyl
7, polyphenyl filling and the top of cement mortar screeding layer 7 are mortar 6；The lower end of stair 2 and the seam crossing of floor decks beam 1 are provided with
Malthoid and cement mortar screeding layer 8, malthoid and the top of cement mortar screeding layer 8 are mortar 6；
The stair 2 include arrangement of reinforcement 2-2 and reserving hole 2-3 at the reserved cavity of stair longitudinal reinforcement 2-1, stair；Stair 2
Upper and lower end parts offer reserving hole 2-3, are cased with the upper end of the reserved steel bar 3 insertion reserving hole 2-3 of reserved spiral bar 4；Two
Root stair longitudinal reinforcement 2-1 is from top to bottom set outside reserving hole 2-3 along the direction of stair 2, and the stair longitudinal direction in stair 2
Arrangement of reinforcement 2-1 upper and lower ends are respectively equipped with one and bend up to strengthen anchorage effect；Arrangement of reinforcement 2-2 is in reserving hole 2- at the reserved cavity of stair
The rectangular frame for leaving an opening is surrounded in 3 and is extended at overlap joint to the reserved cavity of two stair on arrangement of reinforcement 2-2, to improve node
Locate intensity；Concrete grouting material 5 is inoculated with reserving hole 2-3；
The upper and lower ends of reserved steel bar 3 are equipped with thread 3-1.
A kind of precast stair connection method, comprises the following steps
Step steady works：Floor decks beam 1 to be connected and the prefabricated components of stair 2 are transported to scene, it is adjusted
After position is appropriate, corresponding reinforcement location is corrected；
Step 2 connects and is in the milk：Floor decks beam 1 is carried out with each connecting portion reserved steel bar 3 of the upper and lower ends of stair 2
Connection, will reserve connection reinforcing bar 3 top and extend in the reserving hole 2-3 of the upper end of stair 2, and from top to bottom be poured at node
Concrete grouting material 5.
The lap of splice of described reserved connection reinforcing bar 3, is more than or equal to the 25 of itself diameter in non-Aseismic Design
Times, 30 times of itself diameter are more than or equal in Aseismic Design.
Described reserving hole 2-3 diameter is more than 3 times of the diameter of reserved steel bar 3, and more than or equal to 60mm；It is described
Reserving hole 2-3 length is more than more than the length 50mm of reserved steel bar 3；The reserved steel bar 3 aligns with reserving hole 2-3
Afterwards, errors of centration is less than or equal to 2mm.
Filled in described polyphenyl filling and cement mortar screeding layer 7 with polyphenyl, cement mortar screeding；The malthoid and water
Cement mortar screed-coat 8 is separated with malthoid, and uses cement mortar screeding；The floor decks beam 1 is mixed with being poured at the connecting node of stair 2
During solidifying soil grouting material 5, grouting material uses ungauged regions lumnite cement, its performance《Cement-based grouting material application technology is advised
Model》1 relevant regulations.
It should be noted last that, above example is only to supplement explaination the technical solution of the utility model rather than limit
System.Although the utility model is described in detail with reference to embodiment, this area vast is it will be appreciated by the skilled person that to this
The technical scheme of utility model is modified or replaced on an equal basis, without departure from the spirit and model of technical solutions of the utility model
Enclose, it all should cover among right of the present utility model.
Claims (4)
1. a kind of precast stair connecting node, it is characterised in that：Including floor decks beam（1）, stair（2）, reserved steel bar（3）、
Reserved spiral bar（4）, concrete grouting material（5）, mortar（6）, polyphenyl filling and cement mortar screeding layer（7）And malthoid and water
Cement mortar screed-coat (8)；Stair（2）Upper and lower ends are placed in floor decks beam（1）On, and pass through reserved steel bar（3）With building
Plate landing beam（1）It is connected, reserved steel bar（3）It is outer to be cased with reserved spiral bar（4）, reserve spiral bar（4）Component can be improved to break
Bad fragility, plays a part of about beam core inner concrete, to improve the bearing capacity of component；The stair（2）Upper end and floor
Landing beam（1）Seam crossing provided with polyphenyl fill and cement mortar screeding layer（7）, polyphenyl filling and cement mortar screeding layer（7）
Top is mortar（6）；The stair（2）Lower end and floor decks beam（1）Seam crossing provided with malthoid and cement mortar screeding layer
(8) it is, mortar at the top of malthoid and cement mortar screeding layer (8)（6）；
The stair（2）Including stair longitudinal reinforcement（2-1）, arrangement of reinforcement at the reserved cavity of stair（2-2）And reserving hole（2-3）；
Stair（2）Upper and lower end parts offer reserving hole（2-3）, it is cased with reserved spiral bar（4）Reserved steel bar（3）Upper end insertion is pre-
Box out hole（2-3）；Two stair longitudinal reinforcements（2-1）In reserving hole（2-3）Outside from top to bottom along stair（2）Direction set
Put, and in stair（2）Interior stair longitudinal reinforcement（2-1）Upper and lower ends are respectively equipped with one and bend up to strengthen anchorage effect；Stair are pre-
Leave a blank arrangement of reinforcement at hole（2-2）In reserving hole（2-3）Inside surround the rectangular frame for leaving an opening and extension is overlapped on two buildings
Arrangement of reinforcement at the reserved cavity of ladder（2-2）On, to improve intensity at node；Reserving hole（2-3）Inside it is inoculated with concrete grouting material（5）；
The reserved steel bar（3）Upper and lower ends are equipped with thread（3-1）.
2. a kind of precast stair connecting node according to claim 1, it is characterised in that：The reserved connection reinforcing bar（3）
The lap of splice, 25 times of itself diameter are more than or equal in non-Aseismic Design, is more than or equal to it in Aseismic Design
30 times of itself diameter.
3. a kind of precast stair connecting node according to claim 1, it is characterised in that：The reserving hole（2-3）'s
Diameter is more than reserved steel bar（3）3 times of diameter, and more than or equal to 60mm；The reserving hole（2-3）Length be more than it is pre-
Stay reinforcing bar（3）More than length 50mm；The reserved steel bar（3）With reserving hole（2-3）After alignment, errors of centration is less than or waited
In 2mm.
4. a kind of precast stair connecting node according to claim 1, it is characterised in that：The polyphenyl filling and cement bonded sand
Starch screed-coat（7）In filled with polyphenyl, cement mortar screeding；Malthoid and the cement mortar screeding layer (8) is separated with malthoid, is used in combination
Cement mortar screeding；The floor decks beam（1）With stair（2）Casting concrete grouting material at connecting node（5）When, grouting material
Using ungauged regions lumnite cement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720037618.4U CN206554428U (en) | 2017-01-13 | 2017-01-13 | A kind of precast stair connecting node |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720037618.4U CN206554428U (en) | 2017-01-13 | 2017-01-13 | A kind of precast stair connecting node |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206554428U true CN206554428U (en) | 2017-10-13 |
Family
ID=60359898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720037618.4U Expired - Fee Related CN206554428U (en) | 2017-01-13 | 2017-01-13 | A kind of precast stair connecting node |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206554428U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107587670A (en) * | 2017-10-31 | 2018-01-16 | 江苏金贸科技发展有限公司 | A kind of concrete prefabricated stairs of accurate positioning |
| CN115003893A (en) * | 2020-01-22 | 2022-09-02 | 斯文伯格控股公司 | Load transfer connecting element |
-
2017
- 2017-01-13 CN CN201720037618.4U patent/CN206554428U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107587670A (en) * | 2017-10-31 | 2018-01-16 | 江苏金贸科技发展有限公司 | A kind of concrete prefabricated stairs of accurate positioning |
| CN115003893A (en) * | 2020-01-22 | 2022-09-02 | 斯文伯格控股公司 | Load transfer connecting element |
| US12110679B2 (en) | 2020-01-22 | 2024-10-08 | Svein Berg Holding As | Load transferring connecting element |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171013 Termination date: 20200113 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |