CN203742099U - Reinforced concrete prefabricated staircase structure - Google Patents
Reinforced concrete prefabricated staircase structure Download PDFInfo
- Publication number
- CN203742099U CN203742099U CN201320873739.4U CN201320873739U CN203742099U CN 203742099 U CN203742099 U CN 203742099U CN 201320873739 U CN201320873739 U CN 201320873739U CN 203742099 U CN203742099 U CN 203742099U
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- reinforced concrete
- prefabricated
- landing
- landing slab
- bench
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Abstract
The utility model discloses a reinforced concrete prefabricated staircase structure which comprises a prefabricated staircase section (1), an L-shaped landing beam (2), a landing slab (3), embedded parts (4) and top bars (5). The end of the prefabricated staircase section (1) is in lap joint with the bent portion of the L-shaped landing beam (2). The landing slab (3) is erected on the L-shaped landing beam (2) and connected with the prefabricated staircase section (1). The embedded parts (4) are arranged at the end of the prefabricated staircase section (1) and located on the lower layer inside the landing slab (3). The top bars (5) are located on the upper layer inside the landing slab (3) and connected with the embedded parts (4). By the adoption of the reinforced concrete prefabricated staircase structure, the structural assembly rate is improved, the structure is simple, construction is convenient and rapid, work efficiency is high, the defects that formworks are difficult to erect in a field according to a cast-in-place staircase, construction joint quality is difficult to control, the construction procedure is complex, and the construction period is long are overcome, the contact face for cast is enlarged, the reinforcing steel bars are stably bound, and a whole prefabricated staircase is firm and stable.
Description
Technical field
The utility model relates to a kind of stair structure, especially reinforced concrete prefabricated stair structure.
Technical background
People's cast-in-situ steel reinforced concrete stair that adopt in the time building stair in the past more, cast-in-situ steel reinforced concrete stair are that cast in situs becomes an entirety with landing beam by staristep, platform, but the on-the-spot formwork difficulty of this cast-in-situ stair, constuction joint quality is wayward, and working procedure is loaded down with trivial details, the construction period is long.
There is afterwards precast stair, in Chinese utility model patent ublic specification of application CN201217898 in the preset stair of disclosed concrete, be supported in the hole to be provided of peripheral structure closing terraced beam, concrete prefabricated stairs bench and landing slab two ends reserved steel bar, water overlapping layers bench, landing slab and terraced beam be connected to become to entirety.This precast stair is because the contact surface effect of cast is little, and reinforcing bar binding is unstable, causes precast stair entirety insecure stable.
Utility model content
The technical problems to be solved in the utility model is the on-the-spot formwork difficulty of cast-in-situ steel reinforced concrete stair in prior art, and precast stair entirety is insecure stable.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is as follows:
The reinforced concrete prefabricated stair structure of the utility model, comprises prefabricated bench, L shaped landing beam, landing slab, built-in fitting, top reinforcement; The end of described prefabricated bench is overlapped on the bending part of L shaped landing beam, landing slab is erected on L shaped landing beam and is connected with prefabricated bench, prefabricated bench end is provided with built-in fitting, built-in fitting is positioned at the inner lower floor of landing slab position, top reinforcement is positioned at position, the inner upper strata of landing slab, and top reinforcement is connected with built-in fitting.Adopt the reinforced concrete prefabricated stair of this structure to construct that it is simple in structure, reinforcing bar binding is stable, has increased the fastness of precast stair entirety.
As a kind of improvement of the present utility model, landing slab also comprises the beard muscle that is arranged on landing slab inside, and prefabricated bench also comprises and be arranged on the reserved steel bar that prefabricated bench inside extends out from end, and beard muscle overlaps and is connected with reserved steel bar.By this increase reinforcing bar mode, further increase the fastness of precast stair entirety.
As a kind of preferred version, built-in fitting is preferably triangle ironware, and built-in fitting number is no less than 2, and top reinforcement and built-in fitting are welded to connect.
Prefabricated bench end is provided with preformed hole, and L shaped landing beam is supported in the preformed hole of prefabricated bench end.
Prefabricated bench is reinforced concrete structure, and L shaped landing beam is L-type Reinforced Concrete Composite Beams, and landing slab is reinforced concrete laminated floor slab.
Reinforced concrete prefabricated bench of the present utility model, L shaped landing beam, landing slab are all prefabricated units, improve structure assembly rate, simple structure, convenient and quick construction, work efficiency is high, overcome the on-the-spot formwork difficulty of cast-in-situ stair, constuction joint quality is wayward, and the shortcoming that working procedure is loaded down with trivial details, the construction period is long, because having expanded the contact surface of cast, reinforcing bar binding is stable, makes precast stair entirety firm stable.
Brief description of the drawings
Fig. 1 is prefabricated bench constructional drawing.
Fig. 2 is prefabricated bench upper mounting plate organigram.
Fig. 3 is prefabricated bench lower platform organigram.
Detailed description of the invention
Embodiment 1: as shown in Figure 1, 2, a kind of reinforced concrete prefabricated stair structure, comprise prefabricated bench 1, L shaped landing beam 2, landing slab 3, built-in fitting 4, top reinforcement 5, prefabricated bench 1 is upper mounting plate reinforced concrete structure, L shaped landing beam 2 is L shaped Reinforced Concrete Composite Beams, and landing slab 3 is reinforced concrete laminated floor slab.The front end of the prefabricated bench 1 of described upper mounting plate is overlapped on the bending part of L shaped landing beam 2, and landing slab 3 right-hand members are erected on L shaped landing beam 2 and are connected with the prefabricated bench 1 of upper mounting plate, and landing slab left end is fixed on peripheral structure.Owing to being provided with L shaped landing beam 2 between landing slab and the prefabricated bench 1 of upper mounting plate, such structure makes constuction joint quality controlled, and makes landing slab and prefabricated bench 1 stable connection of upper mounting plate.
Be provided with built-in fitting 4 at prefabricated bench 1 front end of upper mounting plate, built-in fitting 4 is preferably triangle ironware number and is no less than 2, is positioned at the inner lower floor of landing slab 3 position, and top reinforcement 5 is positioned at position, the inner upper strata of landing slab 3, and top reinforcement 5 is welded to connect with built-in fitting 4.Further strengthened the fastness of landing slab and the prefabricated bench 1 of upper mounting plate by top reinforcement 5 and being connected of built-in fitting 4.
As a kind of preferred version, be provided with preformed hole at prefabricated bench 1 front end of upper mounting plate, L shaped landing beam 2 is supported in the preformed hole of the prefabricated bench of upper mounting plate end.
The reinforced concrete prefabricated stair structural texture of upper mounting plate of this structure is simple, easy construction, and cast area Dalian connects firmly.
Embodiment 2: as shown in Figure 3, a kind of reinforced concrete prefabricated stair structure, comprise prefabricated bench 1, L shaped landing beam 2, landing slab 3, built-in fitting 4, top reinforcement 5, prefabricated bench 1 is lower platform reinforced concrete structure, L shaped landing beam 2 is L shaped Reinforced Concrete Composite Beams, and landing slab 3 is reinforced concrete laminated floor slab.The end lap of the prefabricated bench 1 of described lower platform is at the bending part of L shaped landing beam 2, and landing slab 3 left ends are erected at the L shaped landing beam 2 platform prefabricated bench 1 in up and down and connect, and landing slab right-hand member is fixed on peripheral structure.Because L shaped landing beam 2 plays the effect of support platform plate and the prefabricated bench 1 of lower platform, improve the stability of the prefabricated bench 1 of landing slab and upper mounting plate, and made constuction joint quality controlled.
Prefabricated bench 1 end of lower platform is provided with built-in fitting 4, and built-in fitting 4 is positioned at the inner lower floor of landing slab 3 position for triangle ironware number is no less than 2, and top reinforcement 5 is positioned at position, the inner upper strata of landing slab 3, and top reinforcement 5 is welded to connect with built-in fitting 4.By welding, landing slab and the prefabricated bench 1 of lower platform are connected as a single entity, make the entirety of reinforced concrete prefabricated stair structure firm.
As a kind of preferred version, be provided with preformed hole at prefabricated bench 1 end of lower platform, L shaped landing beam 2 is supported in the preformed hole of the prefabricated bench of lower platform end.
Embodiment 3: a kind of reinforced concrete prefabricated stair structure, landing slab 3 inside are provided with beard muscle, and prefabricated bench 1 inside is provided with reserved steel bar, and described reserved steel bar extends out from prefabricated bench 1 end, and beard muscle is connected with reserved steel bar overlap joint.Remainder is identical with embodiment 1.Adopt this structure increased landing slab and prefabricated bench reinforcing bar be connected, further improved the stability of reinforced concrete prefabricated stair structure.
The preparation method of the reinforced concrete prefabricated stair structure of the utility model, first carries out the making of prefabricated bench 1, landing beam 2, and in the prefabricated bench inner lower floor of the cast-in-place landing slab of 1 end extended surface position, built-in fitting 4 is set in the time making; Prefabricated bench 1 is installed, laydown machine electric line, colligation landing slab top reinforcement 5, the built-in fitting 4 in top reinforcement 5 bending places and prefabricated bench 1 welds; Mounting platform beam 2, landing beam 2 is supported in the reserving hole of prefabricated bench 1; Mounting platform plate 3, landing slab 3 inside are provided with beard muscle and are connected with prefabricated bench 1 end reserved steel bar overlap joint; Landing beam, landing slab, prefabricated bench, reinforcing bar binding are carried out an acceptance inspection, and qualified after-pouring landing slab overlapping layers concrete, completes a precast stair section and installs.
Below by reference to the accompanying drawings detailed description of the invention of the present utility model is elaborated.But the utility model is not limited to above-described embodiment, for example: L shaped landing beam also can adopt other modes to be connected with prefabricated bench, and for example built-in fitting number is unfixing, in a word, in the ken that one skilled in the relevant art possesses, can also under the prerequisite that does not depart from the utility model aim, make various variations.
Claims (8)
1. a reinforced concrete prefabricated stair structure, is characterized in that: comprise prefabricated bench (1), L shaped landing beam (2), landing slab (3), built-in fitting (4), top reinforcement (5); The end of described prefabricated bench (1) is overlapped on the bending part of L shaped landing beam (2), landing slab (3) is erected at L shaped landing beam (2) and is above connected with prefabricated bench (1), prefabricated bench (1) end is provided with built-in fitting (4), built-in fitting (4) is positioned at the inner lower floor of landing slab (3) position, top reinforcement (5) is positioned at position, the inner upper strata of landing slab (3), and top reinforcement (5) is connected with built-in fitting (4).
2. reinforced concrete prefabricated stair structure according to claim 1, is characterized in that: described built-in fitting (4) is triangle ironware, and number is no less than 2.
3. reinforced concrete prefabricated stair structure according to claim 1, is characterized in that: described top reinforcement (5) is welded to connect with built-in fitting (4).
4. reinforced concrete prefabricated stair structure according to claim 1, it is characterized in that: landing slab (3) also comprises the beard muscle that is arranged on landing slab inside, prefabricated bench (1) also comprises and is arranged on the reserved steel bar that prefabricated bench inside extends out from end, and beard muscle is connected with reserved steel bar overlap joint.
5. reinforced concrete prefabricated stair structure according to claim 1, is characterized in that: prefabricated bench (1) end is provided with preformed hole, and L shaped landing beam (2) is supported in the preformed hole of prefabricated bench (1) end.
6. reinforced concrete prefabricated stair structure according to claim 1, is characterized in that: described prefabricated bench (1) is reinforced concrete structure.
7. reinforced concrete prefabricated stair structure according to claim 1, is characterized in that: described L shaped landing beam (2) is L-type Reinforced Concrete Composite Beams.
8. reinforced concrete prefabricated stair structure according to claim 1, is characterized in that: described landing slab (3) is reinforced concrete laminated floor slab.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320873739.4U CN203742099U (en) | 2013-12-29 | 2013-12-29 | Reinforced concrete prefabricated staircase structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320873739.4U CN203742099U (en) | 2013-12-29 | 2013-12-29 | Reinforced concrete prefabricated staircase structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203742099U true CN203742099U (en) | 2014-07-30 |
Family
ID=51341918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320873739.4U Expired - Fee Related CN203742099U (en) | 2013-12-29 | 2013-12-29 | Reinforced concrete prefabricated staircase structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203742099U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106097876A (en) * | 2016-08-08 | 2016-11-09 | 江苏建筑职业技术学院 | Board-like concrete stair structure model and manufacture method |
| CN108360766A (en) * | 2018-04-27 | 2018-08-03 | 华东建筑设计研究院有限公司 | A kind of precast prestressed cranked slab stairs |
| CN109895239A (en) * | 2019-04-10 | 2019-06-18 | 孟凡林 | A kind of assembly concrete stair delay platform beam slab and its method of construction |
-
2013
- 2013-12-29 CN CN201320873739.4U patent/CN203742099U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106097876A (en) * | 2016-08-08 | 2016-11-09 | 江苏建筑职业技术学院 | Board-like concrete stair structure model and manufacture method |
| CN108360766A (en) * | 2018-04-27 | 2018-08-03 | 华东建筑设计研究院有限公司 | A kind of precast prestressed cranked slab stairs |
| CN109895239A (en) * | 2019-04-10 | 2019-06-18 | 孟凡林 | A kind of assembly concrete stair delay platform beam slab and its method of construction |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140730 Termination date: 20181229 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |