CN103266727A - Reinforced concrete quakeproof stair and construction method - Google Patents
Reinforced concrete quakeproof stair and construction method Download PDFInfo
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- CN103266727A CN103266727A CN2013101835901A CN201310183590A CN103266727A CN 103266727 A CN103266727 A CN 103266727A CN 2013101835901 A CN2013101835901 A CN 2013101835901A CN 201310183590 A CN201310183590 A CN 201310183590A CN 103266727 A CN103266727 A CN 103266727A
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- landing beam
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- landing
- bench plate
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Abstract
Provided are a reinforced concrete quakeproof stair and a construction method. The reinforced concrete quakeproof stair is composed of stair flight plates, a platform beam, a platform plate, a sliding layer, a limit pin and a gap sealing strip. One ends of the stair flight plates are integrally poured with a main body structure, and the other ends of the stair flight plates are supported on the platform beam. The sliding layer is arranged between the stair flight plates and the platform beam, the limit pin is buried in the stair flight plate supported on the platform beam and penetrates the protruding portion of the upper portion of the platform beam to be connected with the outer side of the platform beam, and a gap is reserved between the stair flight plates and the protruding portion of the upper portion of the platform beam and is sealed through the gap sealing strip. In stair construction, the platform is firstly constructed, then the stair flight plates and the platform plate are constructed, and the stair flight plates and the platform beam are not integrally poured. By adopting the reinforced concrete quakeproof stair and the construction method, incomplete integral pouring of the stair and the main body structure can be achieved, the rigidity influence of the stair on the main body structure is small, horizontal seismic force borne by the stair is small, and earthquake prevention of the main body structure and the stair is benefited.
Description
Technical field
The present invention relates to Reinforced Concrete Plate Stairs field in the building structure.
Background technology
2008, it was comparatively serious to find in the seimic disaster census of Wenchuan earthquake that reinforced concrete stairs damages, and particularly the infringement of the stair in the reinforced concrete frame structure is heavier.The passage of escape when stair are earthquake, rescue should form safety island, so stair should have certain shock resistance." seismic design provision in building code " 6.1.15 bar regulation (GB50011-2010): for frame construction, the layout of staircase should not cause the structural plan irregular especially; Staircase component and agent structure are put in order when watering, and should count staircase component to the influence of geological process and effect thereof, should carry out the antidetonation checking of bearing capacity of staircase component; Should take construction measure, reduce staircase component to the influence of agent structure rigidity.As seen, the cast-in-situ steel reinforced concrete stair have adverse effect to the anti-seismic performance of frame construction, if take construction measure, reduce staircase component to the influence of agent structure rigidity, then can reduce the adverse effect to the agent structure anti-seismic performance, reduce the geological process power of staircase component simultaneously, be conducive to the antidetonation of staircase component.In order to satisfy " seismic design provision in building code " requirement (GB50011-2010), need the shockproof stair of a kind of steel concrete and relevant job practices thereof, can reduce staircase component to the influence of agent structure rigidity, not need to carry out simultaneously the antidetonation checking of bearing capacity of staircase component.
Summary of the invention
In order to reduce staircase component to the influence of agent structure rigidity, the present invention discloses the shockproof stair of a kind of steel concrete and job practices, these stair and agent structure be whole watering not exclusively, can slide relatively, lateral rigidity influence to agent structure is very little, the horizontal seismic force that the while stair are born is also very little, is conducive to the antidetonation of agent structure and stair.
The technical scheme of the shockproof stair of steel concrete of the present invention is: stair are the cast-in-situ steel reinforced concrete stair, are made up of bench plate, landing beam, landing slab, sliding layer, spacer pin and joint seal bar.Bench plate one end and agent structure are whole waters together, the other end is bearing on the landing beam, between bench plate and landing beam sliding layer is set, do not put in order and water together, sliding layer adopts polyfluortetraethylene plate, can reduce the friction factor between bench plate and landing beam, the bench plate can be slided relatively with landing beam.The section form of landing beam is for anti-L shaped.Be bearing in the bench plate on the landing beam and bury spacer pin underground, spacer pin is made up of many bar reinforcements, and spacer pin passes the outstanding part in landing beam top, links together in the outside of landing beam.Bench plate landing from the landing beam in the time of can preventing earthquake by spacer pin.Leave the slit between the part that give prominence on bench plate and landing beam top, slip slot milling for the bench plate, the size in slit according to " seismic design provision in building code " (GB50011-2010) in the elastoplasticity relative storey displacement angle limit value of regulation determine that with the product of bench plate height slit employing joint seal bar carries out shutoff.
The job practices of the shockproof stair of steel concrete of the present invention is: the first step, set up the template of bench plate, landing beam and landing slab, and the reinforcing bar of colligation landing beam is built the concrete of the latter half landing beam; Second step, built the concrete of landing beam after, immediately sliding layer is covered the upper surface of landing beam, sliding layer and landing beam are bonded together; The 3rd step is when the concrete intensity of landing beam reaches 1.2N/mm
2After, the reinforcing bar of colligation bench plate and landing slab, spacer pin is fixed on the steel mesh reinforcement of bench plate, and the first half of passing landing beam, pass the part of landing beam at spacer pin plastic bushing is installed, spacer pin is not contacted with the concrete of landing beam, reserve the activity space of spacer pin, spacer pin is not linked to be integral body in the part in the landing beam outside, and brushing release agent on sliding layer and template is built the concrete of bench plate, landing slab and the first half landing beam; The 4th step, after the intensity when concrete strength reaches form removal, remove the template of bench plate, landing beam and landing slab, a side that spacer pin is passed landing beam is linked to be integral body by the welding bar reinforcement, and to being exposed to airborne spacer pin brushing rustproof paint.After treating the completion of ground decoration engineering, adopt the joint seal bar that shutoff is carried out in the slit between bench plate and landing beam.
The shockproof stair of steel concrete of the present invention and agent structure be whole watering not exclusively, the bench plate can slide relatively with landing beam, reduced the influence of staircase component to agent structure rigidity, the horizontal seismic force that stair are born is corresponding reducing also, is conducive to the antidetonation of agent structure and stair.Between bench plate and landing beam, be provided with spacer pin, can prevent the landing from the landing beam of bench plate.Concentrate at the half space place sliding layer is set, be convenient to construction, can guarantee the integrality of flooring simultaneously.Described job practices operation is simple, can realize not exclusively whole watering of staircase component and agent structure.The earthquake of stair when the present invention can reduce the earthquake generation makes stair become the reliable passage of escape and rescue, has bigger social benefit.
Description of drawings
The present invention is further described below in conjunction with accompanying drawing.
Fig. 1 is lateral view of the present invention.
Fig. 2 is vertical view of the present invention.
Fig. 3 is sectional view of the present invention.
Fig. 4 is the axonometric drawing of spacer pin of the present invention.
Fig. 5 is work progress figure of the present invention.
Among the figure: 1-bench plate, 2-landing beam, 3-landing slab, 4-sliding layer, 5-spacer pin, 6-joint seal bar.
The specific embodiment
As Figure 1-3, the shockproof stair of a kind of steel concrete are made up of bench plate (1), landing beam (2), landing slab (3), sliding layer (4), spacer pin (5) and joint seal bar (6).Bench plate (1) one end and agent structure are whole waters together, the other end is bearing on the landing beam (2), between bench plate (1) and landing beam (2) sliding layer (4) is set, do not put in order and water together, sliding layer (4) adopts polyfluortetraethylene plate, can reduce the friction factor between bench plate (1) and landing beam (2), bench plate (1) can be slided relatively with landing beam (2).The section form of landing beam (2) is for anti-L shaped.Be bearing in the bench plate (1) on the landing beam (2) and bury spacer pin (5) underground, spacer pin (5) is made up of many bar reinforcements, and spacer pin (5) passes the outstanding part in landing beam (2) top, links together in the outside of landing beam (2).Bench plate (1) is gone up landing from landing beam (2) in the time of can preventing earthquake by spacer pin (5).Leave the slit between the part that give prominence on bench plate (1) and landing beam (2) top, be the slip slot milling of bench plate (1), the slit adopts joint seal bar (6) to carry out shutoff.
As shown in Figure 4, spacer pin (5) is made up of many bar reinforcements, and in order to strengthen anchoring, the steel bar end that is embedded in the bench plate is made 90 ° of crotches.Pass a side of landing beam, all reinforcing bars weld together, and form an integral body.
Fig. 5 is the work progress figure of the shockproof stair of steel concrete of the present invention, whole construction course is divided into a, b, four steps of c, d, and concrete work progress is: construction sequence a, set up the template of stair, the reinforcing bar of colligation landing beam (2), the concrete of casting platform beam (2) the latter half; Construction sequence b, built the concrete of landing beam (2) after, immediately sliding layer (4) is covered the upper surface of landing beam (2), sliding layer (4) and landing beam (2) are bonded together; Construction sequence c is when the concrete intensity of landing beam (2) reaches 1.2N/mm
2After, the reinforcing bar of colligation bench plate (1) and landing slab (3), spacer pin (5) is fixed on the steel mesh reinforcement of bench plate (1), and the first half of passing landing beam (2), pass the part of landing beam (2) at spacer pin (5) plastic bushing is installed, spacer pin (5) is not contacted with the concrete of landing beam (2), reserve the activity space of spacer pin (5), spacer pin (5) is not linked to be integral body in the part in landing beam (2) outside, brushing release agent on sliding layer (4) and template is built bench plate (1), the concrete of landing slab (3) and the first half landing beam (2); Construction sequence d after the intensity when concrete strength reaches form removal, removes the template of stair, and a side that spacer pin (5) is passed landing beam (2) is linked to be integral body by the welding bar reinforcement, and to being exposed to airborne spacer pin (5) brushing rustproof paint.After treating the completion of ground decoration engineering, adopt joint seal bar (6) that shutoff is carried out in the slit between bench plate (1) and landing beam (2).
Claims (2)
1. shockproof stair of steel concrete, formed by bench plate, landing beam, landing slab, sliding layer, spacer pin and joint seal bar, it is characterized in that: bench plate one end and agent structure are whole waters together, the other end is bearing on the landing beam, between bench plate and landing beam sliding layer is set, be bearing in the bench plate on the landing beam and bury spacer pin underground, spacer pin passes the outstanding part in landing beam top, the outside at landing beam links together, leave the slit between the part that give prominence on bench plate and landing beam top, the shutoff of joint seal bar is adopted in the slit.
2. job practices that realizes the shockproof stair of the described steel concrete of claim 1 is characterized in that: set up the template of bench plate, landing beam and landing slab, the reinforcing bar of colligation landing beam is built the concrete of the latter half landing beam; After having built the concrete of landing beam, immediately sliding layer is covered the upper surface of landing beam; When the concrete intensity of landing beam reaches 1.2N/mm
2After, the reinforcing bar of colligation bench plate and landing slab, spacer pin is fixed on the steel mesh reinforcement of bench plate, and the first half of passing landing beam, pass the part of landing beam at spacer pin plastic bushing is installed, spacer pin is not linked to be integral body in the part in the landing beam outside, builds the concrete of bench plate, landing slab and the first half landing beam; After the intensity when concrete strength reaches form removal, remove the template of bench plate, landing beam and landing slab, a side that spacer pin is passed landing beam is linked to be integral body by the welding bar reinforcement, and to being exposed to airborne spacer pin brushing rustproof paint, after treating the completion of ground decoration engineering, adopt the joint seal bar that shutoff is carried out in the slit between bench plate and landing beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310183590.1A CN103266727B (en) | 2013-05-17 | 2013-05-17 | The construction method of steel concrete quakeproof stair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310183590.1A CN103266727B (en) | 2013-05-17 | 2013-05-17 | The construction method of steel concrete quakeproof stair |
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| Publication Number | Publication Date |
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| CN103266727A true CN103266727A (en) | 2013-08-28 |
| CN103266727B CN103266727B (en) | 2015-10-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310183590.1A Expired - Fee Related CN103266727B (en) | 2013-05-17 | 2013-05-17 | The construction method of steel concrete quakeproof stair |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103590550A (en) * | 2013-11-04 | 2014-02-19 | 深圳市建工集团股份有限公司 | Three-step-upward construction method for stairs |
| CN103711266A (en) * | 2013-12-29 | 2014-04-09 | 北京工业大学 | Energy dissipation and seismic mitigation structure of stair connecting node and implementation process |
| CN104032905A (en) * | 2014-06-20 | 2014-09-10 | 山东科技大学 | Upper staircase section sliding type reinforced concrete shock absorbing staircase |
| CN104481090A (en) * | 2014-11-24 | 2015-04-01 | 江苏中南建筑产业集团有限责任公司 | Full precast concrete stair sliding connecting system and construction method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1090363A (en) * | 1992-09-04 | 1994-08-03 | 株式会社横森制作所 | The construction method of stair |
| JPH10292587A (en) * | 1997-04-18 | 1998-11-04 | Ohbayashi Corp | Damping construction for stair |
| JP2001132189A (en) * | 1999-11-01 | 2001-05-15 | Asutoru:Kk | Staircase block |
| CN202731139U (en) * | 2012-07-16 | 2013-02-13 | 苏州市市政工程设计院有限责任公司 | Beam-type staircase with anti-seismic device |
| CN203308020U (en) * | 2013-05-17 | 2013-11-27 | 山东科技大学 | Reinforced concrete quakeproof stairway |
-
2013
- 2013-05-17 CN CN201310183590.1A patent/CN103266727B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1090363A (en) * | 1992-09-04 | 1994-08-03 | 株式会社横森制作所 | The construction method of stair |
| JPH10292587A (en) * | 1997-04-18 | 1998-11-04 | Ohbayashi Corp | Damping construction for stair |
| JP2001132189A (en) * | 1999-11-01 | 2001-05-15 | Asutoru:Kk | Staircase block |
| CN202731139U (en) * | 2012-07-16 | 2013-02-13 | 苏州市市政工程设计院有限责任公司 | Beam-type staircase with anti-seismic device |
| CN203308020U (en) * | 2013-05-17 | 2013-11-27 | 山东科技大学 | Reinforced concrete quakeproof stairway |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103590550A (en) * | 2013-11-04 | 2014-02-19 | 深圳市建工集团股份有限公司 | Three-step-upward construction method for stairs |
| CN103590550B (en) * | 2013-11-04 | 2015-09-09 | 深圳市建工集团股份有限公司 | Three step construction methods on a kind of stair |
| CN103711266A (en) * | 2013-12-29 | 2014-04-09 | 北京工业大学 | Energy dissipation and seismic mitigation structure of stair connecting node and implementation process |
| CN103711266B (en) * | 2013-12-29 | 2016-08-17 | 北京工业大学 | A kind of stair connection joint seismic energy dissipation structure and implementation process |
| CN104032905A (en) * | 2014-06-20 | 2014-09-10 | 山东科技大学 | Upper staircase section sliding type reinforced concrete shock absorbing staircase |
| CN104481090A (en) * | 2014-11-24 | 2015-04-01 | 江苏中南建筑产业集团有限责任公司 | Full precast concrete stair sliding connecting system and construction method thereof |
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| CN103266727B (en) | 2015-10-21 |
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Granted publication date: 20151021 Termination date: 20190517 |