CN208396179U - A kind of prefabricated cantilever stair - Google Patents
A kind of prefabricated cantilever stair Download PDFInfo
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- CN208396179U CN208396179U CN201820701968.0U CN201820701968U CN208396179U CN 208396179 U CN208396179 U CN 208396179U CN 201820701968 U CN201820701968 U CN 201820701968U CN 208396179 U CN208396179 U CN 208396179U
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- prefabricated
- bench
- cantilever stair
- prefabricated bench
- connecting hole
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Abstract
The utility model discloses a kind of prefabricated cantilever stair, and the middle part ladder beam including connecting the first prefabricated bench and the second prefabricated bench, the top of the middle part ladder beam shifts to install two brackets, and the lower part of the middle part ladder beam shifts to install two steel corbels；The first prefabricated bench upper end is fixed with steel corbel, the sealing that gap is buffered between the first prefabricated bench and middle beam is realized by seal assembly, the second prefabricated bench lower end and bracket turn to fix, screed-coat and separation layer are set between the second prefabricated bench and bracket, connector is set in the bracket, first connecting hole of the second prefabricated setting of bench lower end and connector cooperation, the interior setting gasket of first connecting hole and adapter sleeve.
Description
Technical field
The utility model belongs to construction engineering technical field, and in particular to a kind of prefabricated cantilever stair.
Background technique
Actively develop the inexorable trend that assembled architecture has become Building Trade in China transition and upgrade, as state was built-in in recent years
With wideling popularize for formula Shear Wall Residential, more and more engineering selections replace traditional cast-in-situ stair using precast stair.Phase
Than cast-in-situ stair, precast stair has energy conservation and environmental protection, saves template, shortens the construction period, the advantages such as surface smoothness height.It is wherein prefabricated
Cantilever stair be high residential building pass through frequently with stair form, but prefabricated cantilever stair because its large span be often self-possessed it is excessive, it is right
Lifting appliance requires very high, increases project cost and high-altitude working safety risk, it is therefore desirable to it is a kind of from heavy and light, it is economical and practical
Prefabricated reinforced concrete cantilever stair meet actual requirement of engineering.
The middle part ladder beam bracket structure volume of prior art cantilever stair is larger, and prefabricated bench end structure is complicated, construction
Difficulty is big.
Summary of the invention
The problem of for background technique, in order to overcome the deficiencies of the prior art, the utility model, disclose a kind of prefabricated
Cantilever stair, which has from heavy and light, design and construction is simple and easy, construction cost reduces, factory's production and
The advantages that site operation lifting facilitates.
A kind of prefabricated cantilever stair, including connect the first prefabricated bench and the second prefabricated bench middle part ladder beam, it is described in
The top of portion's ladder beam shifts to install two brackets, and the lower part of the middle part ladder beam shifts to install two steel corbels；The first prefabricated ladder
Duan Shangduan is fixed with steel corbel, and the sealing that gap is buffered between the first prefabricated bench and middle part ladder beam is realized by seal assembly,
The second prefabricated bench lower end is fixed with bracket, and screed-coat and separation layer are arranged between the second prefabricated bench and bracket,
Connector is set in the bracket, the first connecting hole of the second prefabricated setting of bench lower end and connector cooperation, described the
Setting gasket and adapter sleeve in one connecting hole；
Preferably, the middle part ladder beam both ends are fixed with cleat stanchion or floor middle layer；
Preferably, metal end plate is arranged in the described first prefabricated bench upper end, and the second connecting hole is arranged in lower end；
Preferably, the described first prefabricated bench upper end metal end plate and steel corbel weld；
Preferably, the seal assembly includes weather-resistant glue, PE stick and styrofoam；
Preferably, the buffering gap between the described first prefabricated bench and middle part ladder beam is 20mm；
Preferably, third connecting hole is arranged in the described second prefabricated bench upper end；
Preferably, the screed-coat is cement sand bed；
Preferably, the separation layer is malthoid layer；
Preferably, first connecting hole upper end is blocked with mortar.
Beneficial effect acquired by the utility model is:
1) the terraced beam in middle part and cleat stanchion are added, prefabricated cantilever stair is divided into two sections, span halves, and prefabricated bench plate thickness is substantially
Reduce, only original 30% or so of being self-possessed greatly alleviates the lifting pressure and entire project cost when installation.
2) after adding the terraced beam in middle part and cleat stanchion, prefabricated rise of flight is a half layer, and corresponding prefabricated bench is in rarely occurred earthquake
Effect bottom offset limit value halves.
3) it is welded, is realized in the first prefabricated bench by middle part ladder joist steel bracket and the first prefabricated bench upper end metal end plate
The fixed hinge in end；The setting of steel corbel makes the first prefabricated bench simple structure simultaneously, convenient for production.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is this
Some embodiments of utility model, for those of ordinary skill in the art, without creative efforts, also
Other drawings may be obtained according to these drawings without any creative labor.
Fig. 1 is the utility model floor plan；
Fig. 2 is the utility model section view；
Fig. 3 is the first prefabricated bench top view；
Fig. 4 is the first prefabricated bench main view；
Fig. 5 is the first prefabricated bench cross-sectional view；
Fig. 6 is the second prefabricated bench top view；
Fig. 7 is the second prefabricated bench main view；
Fig. 8 is the second prefabricated bench cross-sectional view；
Fig. 9 is middle part ladder beam cross-sectional view；
Figure 10 is middle part ladder beam perspective view；
Figure 11 is the middle part ladder beam scheme of installation of prefabricated cantilever stair；
In figure, the prefabricated bench of 1- first, the prefabricated bench of 2- second, the terraced beam in the middle part 3-, the middle part 4- cleat stanchion, the end 5- ladder beam,
The second connecting hole of 6-, 7- metal end plate, the first connecting hole of 8-, 9- third connecting hole, the first bracket of 10-, 11- connector, 12-
Two brackets, the second steel corbel of 13-, the first steel corbel of 14-, 15- mortar, 16- gasket, 17- adapter sleeve, 18- screed-coat, 19- every
Absciss layer, 20- connector, 21- anchor head, 22- weather-resistant glue, 23-PE stick, 24- styrofoam.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
A kind of prefabricated cantilever stair as shown in figs. 1-11, middle part ladder beam 3 is cast-in-place with middle part cleat stanchion 4, the first prefabricated bench 1
It is connected with the second prefabricated bench 2 by middle part ladder beam 3, the top of middle part ladder beam 3 shifts to install the first bracket 10 and the second bracket
12, ladder beam 13 lower part in middle part shifts to install the first steel corbel 14 and the second steel corbel 13, the first steel corbel 14 and the second steel corbel
Corner cut is arranged in 13 bottom outside, which can prevent from meeting and discussing.
First prefabricated 1 upper end of bench setting metal end plate 7 and the second steel corbel 13 weld, the first prefabricated 1 lower part of bench and
The buffering gap of 20mm is set between middle beam 3, which is sealed using weather-resistant glue 22, PE stick 23 and styrofoam 24；
First prefabricated 1 lower end of bench is connect by the second connecting hole 6 with end ladder beam 5.
The first connecting hole 8 is arranged in second prefabricated 2 lower end of bench, and the connector 11 of upper plane setting is inside the first bracket 10
Met by anchor head 21 and anchored, connector 11 and connecting hole 8 cooperate, and gasket 16 is arranged on step surface, is arranged above gasket 16
Adapter sleeve 17 and connecting rod 11 cooperate, and the upper end mortar 15 blocks after the first connecting hole 8 installs gasket 16 and adapter sleeve 17.
Here connecting rod is preferably C grade bolt.Screed-coat 18 and separation layer are set between the second prefabricated bench 2 and the first bracket 10
19, screed-coat 18 is cement sand bed, and separation layer 19 is malthoid layer；Second prefabricated 2 upper end of bench passes through third connecting hole 9 and end
Portion's ladder beam 5 connects.
The structure Specific construction process is as follows:
1, construction site pours end ladder beam 5, middle part cleat stanchion 4 and half space in advance.
2, after the first prefabricated bench 1 and the second prefabricated transport to construction site of bench 2, by the first of side the prefabricated bench
1 and second prefabricated bench press Fig. 1 and Fig. 2 section, be held on the bracket of the terraced beam 3 in middle part, the second prefabricated 2 bottom surface of bench and coagulation
Malthoid separation layer 19 and cement mortar screeding layer 18, the first prefabricated 1 end of bench are laid between 10 top surface of the first bracket of soil system
The gap 20mm is reserved with intermediate terraced beam 3, is filled using styrofoam flexible material, and sealed with PE stick and weather-resistant glue；Middle part ladder beam 3
Connector 11 be inserted into the second prefabricated bench 2 the first connecting hole 8 in.After the prefabricated bench lifting in side is in place, according to identical
Step lifts the prefabricated bench 1 in the other side first, the second prefabricated bench 2 in place.
After first prefabricated bench 1, the second prefabricated bench 2 lift in place, the third connecting hole 9 of the second prefabricated bench 2 is used
The filling of CGM grouting material, top are blocked with mortar, realize the fixed hinge in the second prefabricated bench upper end, and the first of the second prefabricated bench 2 connects
It connects hole 8 to leave a blank chamber, top shimming 16 is simultaneously blocked with mortar 15, the second prefabricated bench lower end rotating hinge of realization.First prefabricated ladder
The metal end plate 7 and the second steel corbel 13 on 1 top of section weld, and realize the fixed hinge in the first prefabricated 1 upper end of bench, and bench lower end is hinged
Mode is the same as the second prefabricated bench 2.So far, prefabricated cantilever stair installs.
It is above-mentioned although specific embodiments of the present invention are described with reference to the accompanying drawings, but it is not practical new to this
The limitation of type protection scope, the general principles defined herein can be in the feelings for the spirit or scope for not departing from the utility model
Under condition, realize in other embodiments.Those skilled in the art should understand that based on the technical solutions of the present invention,
The various modifications or variations that can be made by those skilled in the art with little creative work still in the guarantor of the utility model
It protects within range.
Claims (10)
1. a kind of prefabricated cantilever stair, which is characterized in that the middle part ladder including the first prefabricated bench of connection and the second prefabricated bench
Beam, the top of the middle part ladder beam shift to install two brackets, and the lower part of the middle part ladder beam shifts to install two steel corbels；Described
One prefabricated bench upper end is fixed with steel corbel, is realized by seal assembly and is buffered gap between the first prefabricated bench and middle part ladder beam
Sealing, the second prefabricated bench lower end fixes with bracket, be arranged between the second prefabricated bench and bracket screed-coat and
Separation layer, the bracket is interior to be arranged connector, and the first connecting hole with connector cooperation is arranged in the second prefabricated bench lower end,
Setting gasket and adapter sleeve in first connecting hole.
2. a kind of prefabricated cantilever stair as described in claim 1, which is characterized in that the middle part ladder beam both ends and cleat stanchion or building
Plate middle layer is fixed.
3. a kind of prefabricated cantilever stair as described in claim 1, which is characterized in that the first prefabricated bench upper end setting gold
Belong to end plate, the second connecting hole is arranged in lower end.
4. a kind of prefabricated cantilever stair as claimed in claim 3, which is characterized in that the metal of the first prefabricated bench upper end
End plate and steel corbel weld.
5. a kind of prefabricated cantilever stair as described in claim 1, which is characterized in that the seal assembly includes weather-resistant glue, PE
Stick and styrofoam.
6. a kind of prefabricated cantilever stair as claimed in claim 5, which is characterized in that the first prefabricated bench and middle part ladder beam
Between buffering gap be 20mm.
7. a kind of prefabricated cantilever stair as described in claim 1, which is characterized in that the second prefabricated bench upper end setting the
Three connecting holes.
8. a kind of prefabricated cantilever stair as described in claim 1, which is characterized in that the screed-coat is cement sand bed.
9. a kind of prefabricated cantilever stair as described in claim 1, which is characterized in that the separation layer is malthoid layer.
10. a kind of prefabricated cantilever stair as described in claim 1, which is characterized in that the first connecting hole upper end mortar
It blocks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820701968.0U CN208396179U (en) | 2018-05-11 | 2018-05-11 | A kind of prefabricated cantilever stair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820701968.0U CN208396179U (en) | 2018-05-11 | 2018-05-11 | A kind of prefabricated cantilever stair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208396179U true CN208396179U (en) | 2019-01-18 |
Family
ID=65136166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820701968.0U Active CN208396179U (en) | 2018-05-11 | 2018-05-11 | A kind of prefabricated cantilever stair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208396179U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109930759A (en) * | 2019-03-28 | 2019-06-25 | 中建四局第一建筑工程有限公司 | A kind of structure using prefabricated components assembling stair |
| CN110206242A (en) * | 2019-05-06 | 2019-09-06 | 广东博意建筑设计院有限公司 | A kind of precast stair |
| CN113565276A (en) * | 2021-06-21 | 2021-10-29 | 中甄住工建设科技(湖北)有限公司 | Weight-reducing prefabricated scissor ladder |
-
2018
- 2018-05-11 CN CN201820701968.0U patent/CN208396179U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109930759A (en) * | 2019-03-28 | 2019-06-25 | 中建四局第一建筑工程有限公司 | A kind of structure using prefabricated components assembling stair |
| CN110206242A (en) * | 2019-05-06 | 2019-09-06 | 广东博意建筑设计院有限公司 | A kind of precast stair |
| CN113565276A (en) * | 2021-06-21 | 2021-10-29 | 中甄住工建设科技(湖北)有限公司 | Weight-reducing prefabricated scissor ladder |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 250101 1-6, 11, Shun Tai Plaza, 2000 Shun Hua Road, Ji'nan high tech Zone, Shandong. Patentee after: Tongyuan Design Group Co.,Ltd. Address before: 250101 1-6, 11, Shun Tai Plaza, 2000 Shun Hua Road, Ji'nan high tech Zone, Shandong. Patentee before: TONGYUAN DESIGN GROUP Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |