CN102619308A - Reinforced concrete stair with local steel plate type sliding device on support - Google Patents
Reinforced concrete stair with local steel plate type sliding device on support Download PDFInfo
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- CN102619308A CN102619308A CN2012100572162A CN201210057216A CN102619308A CN 102619308 A CN102619308 A CN 102619308A CN 2012100572162 A CN2012100572162 A CN 2012100572162A CN 201210057216 A CN201210057216 A CN 201210057216A CN 102619308 A CN102619308 A CN 102619308A
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Abstract
The invention relates to a reinforced concrete stair with a local steel plate type sliding device on a support, which belongs to the field of the concrete structure and is mainly used for the building engineering. The reinforced concrete stair adopts a reinforced concrete cast-in-place plate-type stair, wherein the upper end of the reinforced concrete cast-in-place plate-type stair is integrally cast with a supporting construction member on a main body structure floor or a rest platform of the main body structure, and the lower end of the reinforced concrete cast-in-place plate-type stair is provided with a horizontally sliding support supported by the local steel plate. The setting method comprises the following steps of: on the lower surface at the lower end of a stair section plate and the upper surface of a lower-end supporting construction member, respectively arranging one row of upper embedded steel plates and one row of lower embedded steel plates which are pulled open for a space along the width direction of the stair section plate, correspond one by one vertically and extrude out of the support of a respective concrete surface; ensuring that the upper steel plates and the lower steel plates are in contact supporting; fully laying a graphite powder layer on the supporting surface; and keeping the rest of gaps as the gaps, or to be separated by a polystyrene foam plate. The reinforced concrete stair disclosed by the invention provides an economic technical measure convenient to implement for lightening earthquake damage to the building stair and the integral structure, and can be popularized and applied to the multi and high rise concrete building structure systems in a seismic area, especially to the frame structure.
Description
Technical field
The present invention is the reinforced concrete stairs that a kind of bearing is provided with local steel plate type carriage, belongs to the concrete structure field, is mainly used in construction work.
Background technology
The cast-in-situ steel reinforced concrete stair of conventional construction mode when earthquake owing to participate in lateral resisting work as oblique member; Agent structure rigidity is strengthened; Cause the Stiffness Distribution in the floor level inhomogeneous, the structural entity analysis result is produced very big influence, and often make stair become the first road anti-vibration defense lines and early destroy; Be difficult to guarantee the realization of its evacuating personnel and rescue function, particularly bigger to the frame construction influence.Stair earthquake in Wenchuan earthquake in 2008 has especially caused people's extensive attention.Therefore, take effective measures, reduce the influence of staircase component, avoid it early to destroy agent structure rigidity, all significant for stair itself and even integrally-built quake-resistant safety.
Be head it off, the new edition seismic design provision in building code of promulgation in 2011 has proposed the opinion that gangboard is provided with sliding support.And existing document atlas comes with some shortcomings for the way that this type sliding support is proposed, as, sliding support often adopts the structural form of full contact surface supporting; Make the sliding layer material consumption bigger, uneconomical, and slide plane is excessive; Cause force of sliding friction to strengthen, influence sliding effect; Also some will adopt expensive polytetrafluoroethylene (PTFE) backing plate, though the little advantage of the coefficient of sliding friction is arranged, because cost is high, makes some require original not high engineering user to be reluctant to use to this respect improvement in performance; Thereby in actual engineering, adopt few so far.
Summary of the invention
The objective of the invention is to above-mentioned actual needs; Propose the reinforced concrete stairs that a kind of bearing is provided with local steel plate type carriage,, improve the stair loading-carrying capability per se through changing the connected mode of stair and agent structure; Postpone and destroying; Guaranteeing that it in earthquake time performance rescue, the function of evacuating, reduces the adverse effect to structure, and the economical rationality when having taken into full account practical applications.
The present invention adopts following technical scheme:
Reinforced concrete stairs of the present invention adopts cast-in-place slab; The bench plate all is made up of the section of marking time, and water with the supporting beam slab at agent structure floor or half space place is whole its upper end, by conventional design; And in the lower end; Change the whole way of watering of bench plate and this place's supporting member, make them become separately arrangement of reinforcement and two members of building, the horizontal slip device of local steel plate support type is set between the two.The invention is characterized in: comprise bench plate, and the whole upper end beam slab supporting member that waters in bench plate upper end, the supporting member that is arranged at bench plate lower end and the bench plate lower end sliding support that constitutes by the graphite bisque between pre-embedded steel slab under pre-embedded steel slab and the bearing on pre-embedded steel slab and the bearing under the bearing of pre-embedded steel slab, lower end supporting member upper surface on the bearing of bench plate lower end; One row's space out is set along bench plate width and is fixed in and protrudes from pre-embedded steel slab under the bearing of concrete surface at the upper surface of lower end supporting member; The pre-embedded steel slab position is corresponding one by one and be fixed in and protrude from pre-embedded steel slab on row's bearing of concrete surface on the soffit setting of bench plate lower end and bearing; On the bearing under the soffit of pre-embedded steel slab and the bearing upper surface of pre-embedded steel slab contact supporting, and bearing surface completely spreads graphite powder, becomes the local support unit that several can occurred levels slide, and constitutes sliding support; Between the soffit of bench plate lower end and the upper surface of lower end supporting member, remain the space in all gaps beyond portion's bearing unit of setting a trap or separate by the level of flexibility separation layer of filled polystyrene cystosepiment.
The lower end supporting member of bench plate lower end adopts terraced beam or terraced beam bridging piece.
On the above-mentioned bearing under pre-embedded steel slab and the bearing pre-embedded steel slab all be not more than the soffit size of bench plate along the size of bench plate length direction in this direction; When adopting the practice of gap filled polystyrene cystosepiment; When size, quantity and the size of space of bench plate width will guarantee that the polystyrene foam plate of filling is built the bench plate as bed die and after the concrete coagulation sclerosis, still can become the enough level of flexibility separation layers of thickness.
Last place of marking time, bench plate lower end each vertically between surface and the position that the supporting member building coats contacts the flexible isolating band by the filled polystyrene cystosepiment separate.
Operating principle of the present invention is: because Reinforced Concrete Plate Stairs only links into an integrated entity the upper end and whole the watering of agent structure of each bench plate; And the lower end can and be connected in that occurred level slides between the lower end supporting member of agent structure, avoided structure when relative storey displacement takes place stair because of as bearing diagonal stressed take place self destroy in advance and to the influence of agent structure rigidity.Simultaneously, owing to adopt the bearing carriage of local steel plate support type, can also obtain following beneficial effect:
1, sliding support adopts local support, compares with the structure that adopts the full contact surface supporting in bench plate lower end, not only saves material, reduces cost, and because reducing of contact friction face reduced frictional resistance, helps improving sliding effect;
2, adopt the upper and lower pre-embedded steel slab of bearing also completely to spread graphite powder and form carriage, adopt the polytetrafluoroethylene (PTFE) backing plate to compare, greatly reduce cost, become economical sliding support with a side;
3, between the upper surface of the soffit of bench plate lower end and lower end supporting member; At all positions, space that are provided with beyond the local support unit; When adopting the practice of filled polystyrene cystosepiment, not only can this separate between bench plate and lower end supporting member concrete surface contact the frictional resistance when reducing to slide; And can utilize its bottom template as this place, be convenient to construction.
In sum; To such an extent as to the present invention is for the stair overall structure in the building; Provide a kind of and improved anti-seismic performance, alleviated the economical technical measures of earthquake; In all kinds of how high-rise concrete building structures system of earthquake zone, the frame construction that particularly has a large capacity and a wide range, good popularizing application prospect is arranged.
Description of drawings
Fig. 1 is the generalized section of the present invention when to be used for reinforced concrete frame structure and bench plate lower end supporting member be terraced beam;
Fig. 2 is that the local A-A of Fig. 1 is to schematic cross section;
Fig. 3 is that the local B-B of Fig. 1 is to generalized section;
Fig. 4 is the local steel plate support type sliding support sketch map of Fig. 1;
Fig. 5 is the generalized section of the present invention when to be used for reinforced concrete frame structure and bench plate lower end supporting member be terraced beam bridging piece;
Fig. 6 is that the local A-A of Fig. 5 is to schematic cross section;
Fig. 7 is that the local B-B of Fig. 5 is to schematic cross section;
Fig. 8 is the local steel plate support type sliding support sketch map of Fig. 5.
Among the figure: 1, pre-embedded steel slab on the bearing, 2, pre-embedded steel slab under the bearing, 3, the graphite bisque; 4, polystyrene foam plate, 5, the bench plate, 6, the lower end supporting member; 7, terraced beam, 8, terraced beam bridging piece, 9, upper end beam slab supporting member; 10, landing slab, 11, reinforced concrete beam, 12, polystyrene foam plate.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is done further explanation:
Embodiment 1:
The reinforced concrete stairs application of end bearing when terraced beam instantly of Fig. 1～Fig. 4 local steel plate type carriage for bearing is provided with.Build reinforced concrete beam 11, landing slab 10, the terraced beam 7 of bottom during construction earlier; When building terraced beam 7, the surface according to certain interval, is provided with pre-embedded steel slab 2 one rows under the bearing that protrudes from terraced beam 7 concrete surfaces along bench plate 5 widths above that; After treating the concrete coagulation sclerosis of terraced beam 7, all correspondence positions of pre-embedded steel slab 2 are provided with pre-embedded steel slab 1 on the bearing under bench plate 5 lower ends and bearing, and protrude from the concrete surface of bench plate 5 lower ends; Pre-embedded steel slab 1 is positioned at the top of pre-embedded steel slab 2 under the bearing on the bearing, and the surface contact is supported, and completely spreads graphite bisque 3 at bearing surface, becomes the local support unit that some ability occurred levels slide, and constitutes sliding support; Fill out in all gaps beyond portion's bearing unit of setting a trap between the upper surface of the soffit of bench plate 5 lower ends and terraced beam 7 and to put polystyrene foam plate 4; Bench plate 5 lower ends and terraced beam 7 are separated; And when building the concrete of bench plate 5 the double bed die of doing its soffit place; Accomplish bench plate 5 and the making of the whole upper end beam slab supporting member 9 that waters with it then, thereby constitute the reinforced concrete stairs that bearing is provided with local steel plate type carriage.
Also filled polystyrene cystosepiment 4 not of gap setting a trap between the upper surface of the soffit of bench plate 5 lower ends and terraced beam 7 beyond portion's bearing unit remains the space.
Embodiment 2:
The reinforced concrete stairs of Fig. 5～Fig. 8 local steel plate type carriage for bearing is provided with instantly end bearing when terraced beam bridging piece application.Build reinforced concrete beam 11, landing slab 10, terraced beam 7 and the terraced beam bridging piece 8 of bottom during construction earlier, the length of choosing of terraced beam bridging piece 8 is got bench plate 5 bottom tread runs, and its thickness is not less than the thickness of bench plate 5; When building terraced beam bridging piece 8, the surface is according to being provided with pre-embedded steel slab 2 under the bearing with embodiment 1 identical method above that, and identical follow-up all production process of completion and embodiment 1, thereby the formation bearing is provided with the reinforced concrete stairs of local steel plate type carriage.
Claims (4)
1. a bearing is provided with the reinforced concrete stairs of local steel plate type carriage, it is characterized in that: comprise bench plate (5), and the whole upper end beam slab supporting member (9) that waters in bench plate (5) upper end, the lower end supporting member (6) that is arranged at bench plate (5) lower end and by bench plate (5) the lower end sliding support of the formation of the graphite bisque (3) between pre-embedded steel slab (2) under pre-embedded steel slab (1) and the bearing on pre-embedded steel slab (2) and the bearing under the bearing of pre-embedded steel slab (1), lower end supporting member (6) upper surface on the bearing of bench plate (5) lower end; Row's space out is set along bench plate (5) width and is fixed in and protrudes from pre-embedded steel slab (2) under the bearing of concrete surface at the upper surface of lower end supporting member (6); Pre-embedded steel slab (2) position is corresponding one by one and be fixed in and protrude from pre-embedded steel slab (1) on row's bearing of concrete surface under the soffit setting of bench plate (5) lower end and bearing; The upper surface of pre-embedded steel slab (2) contacts supporting under the soffit of pre-embedded steel slab on the bearing (1) and the bearing, and bearing surface completely spreads graphite bisque (3), becomes the local support unit that several can occurred levels slide, and constitutes sliding support; Between the soffit of bench plate (5) lower end and the upper surface of lower end supporting member (6), remain the space in all gaps beyond portion's bearing unit of setting a trap or separate by the level of flexibility separation layer of filled polystyrene cystosepiment (4).
2. a kind of bearing according to claim 1 is provided with the reinforced concrete stairs of local steel plate type carriage, it is characterized in that: the lower end supporting member (6) of bench plate (5) lower end adopts terraced beam (7) or terraced beam bridging piece (8).
3. a kind of bearing according to claim 1 is provided with the reinforced concrete stairs of local steel plate type carriage, it is characterized in that: pre-embedded steel slab (2) all is not more than the soffit size of bench plate (5) in this direction along the size of bench plate (5) length direction under pre-embedded steel slab on the bearing (1) and the bearing.
4. a kind of bearing according to claim 1 is provided with the reinforced concrete stairs of local steel plate type carriage, it is characterized in that: bench plate (5) last place of marking time, lower end each vertically between surface and the position that this place's supporting member building coats contacts the flexible isolating band by filled polystyrene cystosepiment (12) separate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100572162A CN102619308A (en) | 2012-03-06 | 2012-03-06 | Reinforced concrete stair with local steel plate type sliding device on support |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100572162A CN102619308A (en) | 2012-03-06 | 2012-03-06 | Reinforced concrete stair with local steel plate type sliding device on support |
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| CN102619308A true CN102619308A (en) | 2012-08-01 |
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| CN2012100572162A Pending CN102619308A (en) | 2012-03-06 | 2012-03-06 | Reinforced concrete stair with local steel plate type sliding device on support |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195215A (en) * | 2013-04-11 | 2013-07-10 | 北京工业大学 | Reinforced concrete stringer stairway with slidable end structures and method for constructing reinforced concrete stringer stairway |
| CN104060781A (en) * | 2014-06-27 | 2014-09-24 | 合肥建工集团有限公司 | Cast-in-situ cranked slab stair without seams at stair sections and construction method |
| CN105298040A (en) * | 2015-10-30 | 2016-02-03 | 中汇建筑集团有限公司 | Light assembly type stairway and construction method thereof |
| CN106639196A (en) * | 2016-08-31 | 2017-05-10 | 江西建工第建筑有限责任公司 | Construction method for cast-in-place slab staircase with the lower end provided with steel plate sliding support |
| CN107313562A (en) * | 2017-08-10 | 2017-11-03 | 滨州学院 | A kind of armored concrete quakeproof stair with damping system |
| CN112878604A (en) * | 2020-10-13 | 2021-06-01 | 南通中慧建筑科技有限公司 | Mobile stair based on BIM |
| CN113235954A (en) * | 2021-05-31 | 2021-08-10 | 江苏永创建设有限公司 | Positioning frame for sliding support base plate and construction method of sliding support stair |
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| JP2008223422A (en) * | 2007-03-15 | 2008-09-25 | Shimizu Corp | Mounting structure of stairs |
| US20090188183A1 (en) * | 2004-06-28 | 2009-07-30 | Sorenson Jr Robert Everett | Stair system with adjustable width |
| KR101008261B1 (en) * | 2008-05-06 | 2011-01-13 | 정운옥 | Pve-fabricating type stairs |
| CN202117247U (en) * | 2011-06-21 | 2012-01-18 | 昆明有色冶金设计研究院股份公司 | Stairway capable of eliminating diagonal bracing effect |
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2012
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Patent Citations (4)
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| US20090188183A1 (en) * | 2004-06-28 | 2009-07-30 | Sorenson Jr Robert Everett | Stair system with adjustable width |
| JP2008223422A (en) * | 2007-03-15 | 2008-09-25 | Shimizu Corp | Mounting structure of stairs |
| KR101008261B1 (en) * | 2008-05-06 | 2011-01-13 | 정운옥 | Pve-fabricating type stairs |
| CN202117247U (en) * | 2011-06-21 | 2012-01-18 | 昆明有色冶金设计研究院股份公司 | Stairway capable of eliminating diagonal bracing effect |
Non-Patent Citations (1)
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195215A (en) * | 2013-04-11 | 2013-07-10 | 北京工业大学 | Reinforced concrete stringer stairway with slidable end structures and method for constructing reinforced concrete stringer stairway |
| CN104060781A (en) * | 2014-06-27 | 2014-09-24 | 合肥建工集团有限公司 | Cast-in-situ cranked slab stair without seams at stair sections and construction method |
| CN105298040A (en) * | 2015-10-30 | 2016-02-03 | 中汇建筑集团有限公司 | Light assembly type stairway and construction method thereof |
| CN106639196A (en) * | 2016-08-31 | 2017-05-10 | 江西建工第建筑有限责任公司 | Construction method for cast-in-place slab staircase with the lower end provided with steel plate sliding support |
| CN107313562A (en) * | 2017-08-10 | 2017-11-03 | 滨州学院 | A kind of armored concrete quakeproof stair with damping system |
| CN112878604A (en) * | 2020-10-13 | 2021-06-01 | 南通中慧建筑科技有限公司 | Mobile stair based on BIM |
| CN113235954A (en) * | 2021-05-31 | 2021-08-10 | 江苏永创建设有限公司 | Positioning frame for sliding support base plate and construction method of sliding support stair |
| CN113235954B (en) * | 2021-05-31 | 2022-05-17 | 江苏永创建设有限公司 | Positioning frame for sliding support base plate and construction method of sliding support stair |
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Application publication date: 20120801 |