CN102605909A - Reinforced concrete platy stair with simple sliding support and construction method - Google Patents
Reinforced concrete platy stair with simple sliding support and construction method Download PDFInfo
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- CN102605909A CN102605909A CN2012101002062A CN201210100206A CN102605909A CN 102605909 A CN102605909 A CN 102605909A CN 2012101002062 A CN2012101002062 A CN 2012101002062A CN 201210100206 A CN201210100206 A CN 201210100206A CN 102605909 A CN102605909 A CN 102605909A
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Abstract
The invention relates to a reinforced concrete platy stair with a simple sliding support and a construction method, which belong to the field of civil engineering and are mainly used for building engineering. The reinforced concrete platy stair is a cast-in-place concrete platy stair, the upper end of a stair section plate and an upper-end supporting component connected to a main body structure are in integral casting, and the simple sliding support is arranged at the lower end of the stair section plate. The method includes that the stair section plate and a lower-end supporting component or a stair beam bridging piece are separately provided with bars and are in pouring separately, the lower end of the stair section plate is shelved on the lower-end supporting component, the upper surface of the lower-end supporting component is a smooth and flat horizontal plane, a plastic film isolating layer is fully laid on the horizontal plane, so that the lower-end supporting component is isolated from the lower end of the stair section plate, the sliding support is formed and is used as a pouring bottom formwork at the lower end of the stair section plate during construction, and the lower end of the stair section plate is also isolated from a building surface layer of the supporting component. The problem that the stair is broken in advance during earthquake and adverse influences to the main body structure are avoided due to the sliding support, earthquake damage is relieved, and the reinforced concrete platy stair is simple, economical and durable, and can be widely used for multiple high-rise building structures and particularly concrete structures.
Description
Technical field
The present invention is a kind of Reinforced Concrete Plate Stairs and job practices that simple and easy sliding support is set, and belongs to field of civil engineering, is mainly used in construction work.
Background technology
Reinforced Concrete Plate Stairs is one of the most widely used stair structural form in the building.And this type cast-in-situ steel reinforced concrete stair of building by traditional approach are cast in supporting member up and down; The bench plate is participated in lateral resisting work as oblique member; Make agent structure rigidity strengthen, cause the Stiffness Distribution in the floor level inhomogeneous, the structural entity analysis result is produced very big influence; And this way often causes stair to become the first road anti-vibration defense lines of structure, under macroseism, destroys earlier, and staircase is as the function of emergency escape passage performance evacuating personnel and rescue effect when being difficult to guarantee earthquake.And institute's generation stair earthquake more makes people profoundly recognize in the Wenchuan earthquake in 2008; Adopt an effective measure; Reducing the influence of staircase component to agent structure rigidity, avoid it early to destroy, all is very important for stair itself and even integrally-built quake-resistant safety.
Be head it off, lot of domestic and international scholar and document have proposed stair are provided with the suggestion of sliding support.But existing document atlas is obviously not enough for the structure way existence that this type sliding support is proposed, and like the structure relative complex, improves more, the inconvenience etc. of constructing of cost, thereby in actual engineering, adopts few so far.
Summary of the invention
The objective of the invention is to above-mentioned actual needs; A kind of Reinforced Concrete Plate Stairs and job practices that simple and easy sliding support is set proposed; Through changing the connected mode of stair and agent structure, change the stair loading-carrying capability per se with easy sliding support setting, postpone and destroying; Make its function of when earthquake, bringing into play rescue, evacuating, and reduce adverse effect structure.
The present invention adopts following technical scheme:
Reinforced Concrete Plate Stairs of the present invention adopts cast-in-place stair; The bench plate all is made up of the section of marking time; Water with the supporting beam slab at agent structure floor or half space place is whole its upper end; And, change bench plate and this place's supporting member ladder beam or the whole way of watering of terraced beam bridging piece in the lower end, form simple and easy sliding support.Stair of the present invention comprise the bench plate, put in order upper end beam slab supporting member, the lower end supporting member that is arranged at bench plate lower end and the plastic sheeting separation layer that waters with bench plate upper end; Bench plate and lower end supporting member member for separating arrangement of reinforcement, separately building, bench plate lower end is shelved and is supported on the supporting member of lower end; The concrete upper surface of lower end supporting member is built the horizontal plane that is made into smooth; And at the full paving plastic film separation layer of four corner of its supporting bench plate lower end; The soffit of bench plate lower end and the upper surface of lower end supporting member are separated, form the bearing that relative horizontal slip can take place.
Flexible isolating band by the filled polystyrene cystosepiment between the building coats adjacent regions of bottom each vertical surface of marking time, bench plate lower end and lower end supporting member and landing slab separates, to guarantee slip.
The terraced beam bridging piece that the lower end supporting member of bench plate lower end adopts terraced beam or extended out by terraced beam.
Construction sequence of the present invention is:
A, build the lower end supporting member that is positioned at below the bench plate earlier, and lower end supporting member upper surface is smeared into the horizontal plane of smooth within the specific limits.This scope comprises the entire area of direct supporting bench plate lower end, and on fore-and-aft direction, outwards enlarges the scope that to be not less than building floor height 1/50;
B, the plastic sheeting separation layer completely is laid on the horizontal plane of above-mentioned smooth;
When c, bench plate make, with the upper surface of the lower end supporting member of full paving plastic film separation layer bottom template as bench plate lower end, the steel concrete pouring construction of accomplishing this bench plate by conventional method with and the making of upper end supporting member;
D, when carrying out the follow-up construction of the building coats making etc. of lower end supporting member and landing slab, with bottom each the vertical filled polystyrene cystosepiment between the building coats adjacent regions of surface and lower end supporting member and landing slab of marking time in bench plate lower end.
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; Occurred level slides between the lower end supporting member of agent structure and the lower end can and be connected in; 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.Owing to adopted the measure of bench plate lower end and lower end supporting member being kept apart by the plastic sheeting separation layer to form sliding support, can also obtain following beneficial effect:
1, cost is low.Compare with the ordinary constitution cast-in-situ reinforced concrete slab formula stair of fricton-tight bearing, expense differs seldom; Compare with the way of using materials such as polytetrafluoroethylene (PTFE) backing plate, steel plate to form sliding support, greatly reduce cost;
2, lower end supporting member concrete surface is spread the plastic sheeting separation layer after, the bottom template of directly building as the bench plate, simple structure is convenient to construction.
3, in the long term, this sliding support is between bench plate and lower end supporting member concrete surface, to form Frictional Slipping in essence, has good materials ' durability.
In sum; The present invention makes every effort to easy setting, to such an extent as to for the stair overall structure in the building, a kind of technical measures that improve anti-seismic performance, alleviate earthquake are provided; Cost is low; And be convenient to construction, in all kinds of multi-rise building structural systems of earthquake zone, the concrete structure that particularly has a large capacity and a wide range, good popularizing application prospect arranged.
Description of drawings
Fig. 1 is the vertical section sketch map 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 the A-A sectional drawing of Fig. 1;
Fig. 3 is the simple and easy sliding support node local structure sketch map of Fig. 1;
Fig. 4 is the vertical section sketch map 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. 5 is the B-B sectional drawing of Fig. 4;
Fig. 6 is the simple and easy sliding support node local structure sketch map of Fig. 4;
Among the figure: 1, terraced beam, 2, terraced beam bridging piece, 3, upper end beam slab supporting member, 4, landing slab, 5, the bench plate, 6, the plastic sheeting separation layer, 7, polystyrene foam plate, 8, building coats.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is done further explanation:
Embodiment 1:
Fig. 1～Fig. 3 is the application of Reinforced Concrete Plate Stairs when bench plate lower end is supported on terraced beam that simple and easy sliding support is set.Build lower flat platen 4, terraced beam 1 during construction earlier; The concrete of terraced beam 1 upper surface is smeared into the horizontal plane of smooth; And be not less than the landing slab 4 concrete upper surface of adjacent with it; And, make with the soffit of bench plate 5 lower ends of after-pouring and the upper surface of terraced beam 1 to separate at its full paving plastic film separation layer 6 of four corner corresponding to supporting bench plate 5 lower ends; When building the concrete of bench plate 5, with the bottom template of terraced beam 1 upper surface of expiring paving plastic film separation layer 6 as bench plate 5 lower end soffits; Accomplish bench plate 5 and the making of the whole upper end beam slab supporting member 3 that waters with it then, thereby constitute the Reinforced Concrete Plate Stairs that simple and easy sliding support is set; Bench plate 5 lower ends last mark time the place each vertically surface and landing slab 4 and terraced beam 1 building coats 8 with it between the adjacent regions all filled polystyrene cystosepiment 7 as the isolation strip, to guarantee slip.
Embodiment 2:
The application that Fig. 4～Fig. 6 is a Reinforced Concrete Plate Stairs that simple and easy sliding support is set when bench plate lower end is supported on terraced beam bridging piece.Build landing slab 4, terraced beam 1 and the terraced beam bridging piece 2 of bottom during construction earlier, the length of choosing of terraced beam bridging piece 2 is got bench plate 5 bottom tread runs, and its thickness is not less than the thickness of bench plate 5; The upper surface concrete of terraced beam bridging piece 2 is smeared into the horizontal plane of smooth; And be not less than the terraced beam 1 concrete upper surface of adjacent with it; And, make with the soffit of bench plate 5 lower ends of after-pouring and the upper surface of terraced beam bridging piece 2 to separate at its full paving plastic film separation layer 6 of four corner corresponding to supporting bench plate 5 lower ends; When building the concrete of bench plate 5, with the bottom template of terraced beam bridging piece 2 upper surfaces of expiring paving plastic film separation layer 6 as bench plate 5 lower end soffits; Accomplish follow-up all production process identical then with embodiment 1.
What should explain at last is: above embodiment only in order to the explanation the present invention and and unrestricted technical scheme described in the invention; Therefore, although this manual has carried out detailed explanation to the present invention with reference to each above-mentioned embodiment,, those of ordinary skill in the art should be appreciated that still and can make amendment or be equal to replacement the present invention; And all do not break away from the technical scheme and the improvement thereof of the spirit and the scope of invention, and it all should be encompassed in the middle of the claim scope of the present invention.
Claims (4)
1. the Reinforced Concrete Plate Stairs that simple and easy sliding support is set is characterized in that: comprise bench plate (5), put in order upper end beam slab supporting member (3), the lower end supporting member that is arranged at bench plate (5) lower end and the plastic sheeting separation layer (6) that waters with bench plate (5) upper end; Bench plate (5) and lower end supporting member member for separating arrangement of reinforcement, separately building, bench plate (5) lower end is shelved and is supported on the supporting member of lower end; The concrete upper surface of lower end supporting member is built the horizontal plane that is made into smooth; And the full paving plastic film separation layer (6) of the four corner in its supporting bench plate (5) lower end; The soffit of bench plate (5) lower end and the upper surface of lower end supporting member are separated, form the bearing that relative horizontal slip can take place.
2. a kind of Reinforced Concrete Plate Stairs that simple and easy sliding support is set according to claim 1; It is characterized in that: the flexible isolating band by filled polystyrene cystosepiment (7) between building coats (8) adjacent regions of bottom each vertical surface of marking time, bench plate (5) lower end and lower end supporting member and landing slab (4) separates, to guarantee slip.
3. according to claim 1, the described a kind of Reinforced Concrete Plate Stairs that simple and easy sliding support is set of 2 arbitrary claims, it is characterized in that: the terraced beam bridging piece (2) that the lower end supporting member of bench plate (5) lower end adopts terraced beam (1) or extended out by terraced beam (1).
4. claim 1,2, the described a kind of job practices that the Reinforced Concrete Plate Stairs of simple and easy sliding support is set of 3 arbitrary claims is characterized in that: the steps include:
A, build the lower end supporting member that is positioned at below the bench plate (5) earlier, and lower end supporting member upper surface is smeared into the horizontal plane of smooth within the specific limits.This scope comprises the entire area of direct supporting bench plate (5) lower end, and on fore-and-aft direction, outwards enlarges the scope that to be not less than building floor height 1/50;
B, plastic sheeting separation layer (6) completely is laid on the horizontal plane of above-mentioned smooth;
When c, bench plate (5) making; With the upper surface of the lower end supporting member of full paving plastic film separation layer (6) bottom template as bench plate (5) lower end, the steel concrete pouring construction of accomplishing this bench plate (5) by conventional method with and the making of upper end supporting member (3);
When d, the building coats (8) that carries out lower end supporting member and landing slab (4) such as make at follow-up construction, with filled polystyrene cystosepiment (7) between building coats (8) adjacent regions of bottom each vertically surperficial and a lower end supporting member and the landing slab (4) of marking time in bench plate (5) lower end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012101002062A CN102605909A (en) | 2012-04-06 | 2012-04-06 | Reinforced concrete platy stair with simple sliding support and construction method |
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| CN2012101002062A CN102605909A (en) | 2012-04-06 | 2012-04-06 | Reinforced concrete platy stair with simple sliding support and construction method |
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| CN102605909A true CN102605909A (en) | 2012-07-25 |
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Cited By (14)
| 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 |
| 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 |
| CN103790295A (en) * | 2014-02-26 | 2014-05-14 | 中国建筑第八工程局有限公司 | Reinforced concrete stair structure and construction method thereof |
| CN103821289A (en) * | 2014-03-20 | 2014-05-28 | 天津住宅集团建设工程总承包有限公司 | Connection and installation construction method for earthquake collision and damage preventing on support of prefabricated stair |
| CN104179306A (en) * | 2014-09-03 | 2014-12-03 | 四川华构住宅工业有限公司 | Assembly type beam type sliding support hollow stairway |
| 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 |
| CN104929363A (en) * | 2015-07-07 | 2015-09-23 | 上海天华建筑设计有限公司 | Cast-in-place concrete slab-type stairway sliding support and formwork thereof |
| CN105672591A (en) * | 2016-04-12 | 2016-06-15 | 福州大学 | Existing reinforced concrete plate type stair aseismatic reconstruction structure and construction technology |
| CN109386096A (en) * | 2018-11-19 | 2019-02-26 | 中建八局第二建设有限公司 | A kind of slideable Reinforced Concrete Plate Stairs and Reinforced Concrete Plate Stairs construction method |
| CN109629714A (en) * | 2017-10-08 | 2019-04-16 | 李聪 | A kind of prefabricated partition wall of the staircase with installation base and its installation method |
| CN109853880A (en) * | 2019-03-20 | 2019-06-07 | 上海众鑫建筑设计研究院有限公司 | The cast-in-place cranked slab stairs and its construction technology of sliding support are set at high-end ladder beam support |
| CN112031299A (en) * | 2020-09-01 | 2020-12-04 | 湖北工业大学 | Anti-seismic assembled stair with upper end and lower end connected and supported in sliding mode |
| CN112112374A (en) * | 2020-09-13 | 2020-12-22 | 朱辉祖 | Novel reinforced concrete prefabricated stair end connecting method |
| 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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| 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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| 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 |
Cited By (18)
| 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 |
| 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 |
| CN103790295B (en) * | 2014-02-26 | 2016-08-17 | 中国建筑第八工程局有限公司 | Reinforced concrete stairs structure and construction method thereof |
| CN103790295A (en) * | 2014-02-26 | 2014-05-14 | 中国建筑第八工程局有限公司 | Reinforced concrete stair structure and construction method thereof |
| CN103821289A (en) * | 2014-03-20 | 2014-05-28 | 天津住宅集团建设工程总承包有限公司 | Connection and installation construction method for earthquake collision and damage preventing on support of prefabricated stair |
| CN104179306A (en) * | 2014-09-03 | 2014-12-03 | 四川华构住宅工业有限公司 | Assembly type beam type sliding support hollow stairway |
| 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 |
| CN104929363A (en) * | 2015-07-07 | 2015-09-23 | 上海天华建筑设计有限公司 | Cast-in-place concrete slab-type stairway sliding support and formwork thereof |
| CN105672591A (en) * | 2016-04-12 | 2016-06-15 | 福州大学 | Existing reinforced concrete plate type stair aseismatic reconstruction structure and construction technology |
| CN109629714A (en) * | 2017-10-08 | 2019-04-16 | 李聪 | A kind of prefabricated partition wall of the staircase with installation base and its installation method |
| CN109386096A (en) * | 2018-11-19 | 2019-02-26 | 中建八局第二建设有限公司 | A kind of slideable Reinforced Concrete Plate Stairs and Reinforced Concrete Plate Stairs construction method |
| CN109853880A (en) * | 2019-03-20 | 2019-06-07 | 上海众鑫建筑设计研究院有限公司 | The cast-in-place cranked slab stairs and its construction technology of sliding support are set at high-end ladder beam support |
| CN112031299A (en) * | 2020-09-01 | 2020-12-04 | 湖北工业大学 | Anti-seismic assembled stair with upper end and lower end connected and supported in sliding mode |
| CN112031299B (en) * | 2020-09-01 | 2021-10-26 | 湖北工业大学 | Anti-seismic assembled stair with upper end and lower end connected and supported in sliding mode |
| CN112112374A (en) * | 2020-09-13 | 2020-12-22 | 朱辉祖 | Novel reinforced concrete prefabricated stair end connecting method |
| 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: 20120725 |