CN103195215A - Reinforced concrete stringer stairway with slidable end structures and method for constructing reinforced concrete stringer stairway - Google Patents
Reinforced concrete stringer stairway with slidable end structures and method for constructing reinforced concrete stringer stairway Download PDFInfo
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- CN103195215A CN103195215A CN201310125730XA CN201310125730A CN103195215A CN 103195215 A CN103195215 A CN 103195215A CN 201310125730X A CN201310125730X A CN 201310125730XA CN 201310125730 A CN201310125730 A CN 201310125730A CN 103195215 A CN103195215 A CN 103195215A
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Abstract
The invention discloses a reinforced concrete stringer stairway with slidable end structures and a method for constructing the reinforced concrete stringer stairway, and belongs to the field of civil engineering. The reinforced concrete stringer stairway and the method are mainly used for building engineering. The reinforced concrete stringer stairway comprises a stairway oblique beam, a stairway tread and a stairway bottom beam which are cast in a site to form a bench. The upper end of the bench and an upper-end supporting beam are subjected to one-piece casting, and a slidable support is arranged at the lower end of the bench. The method includes shelving the lower end of the bench on a lower-end supporting beam in a supported manner, separately reinforcing the bench and the lower-end supporting beam and respectively casting and manufacturing the bench and the lower-end supporting beam; manufacturing a concrete surface, which is used for supporting the bench, of the lower-end supporting beam into a smooth and flat horizontal plane, and vertically separating the lower-end supporting beam from the bench by an isolation layer; and arranging gaps or isolation strips among the lower end of the bench, the lower-end supporting beam and other adjacent components except for supports which are in contact with each other. Isolation materials are fully laid to form the isolation layer, and the lower-end supporting beam and the bench can horizontally slide relatively after being separated from each other. The reinforced concrete stringer stairway and the method have the advantages that the stringer stairway is provided with the slidable end structures, so that destruction to the stringer stairway can be postponed when in an earthquake, adverse effects on a main structure are reduced, and the reinforced concrete stringer stairway is simple in structure and convenient to construct.
Description
Technical field
The present invention is a kind of steel concrete beam type stair and job practices of slidably constructing the end that be provided with, and belongs to field of civil engineering, is mainly used in construction work.
Background technology
Steel concrete beam type stair are to use one of stair structural form comparatively widely in the building.Be applicable to the staircase that span is bigger and crowded, school for example, buildings such as market.And the stringer of the cast-in-situ steel reinforced concrete stringer of building in a traditional way and tread are as bench, be cast in supporting member up and down, bench 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 a very large impact; And this way often causes stair to become the first road anti-vibration defense lines of structure, destroys earlier under macroseism, 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 staircase component to the influence of 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, 2010 editions seismic design provision in building codes of China propose the structure theory of " the gangboard sliding bearing is in landing slab ".But how steel concrete beam type stair are realized this sliding bearing textural, then need to provide specific practice, make it in actual engineering, to adopt.
Summary of the invention
The objective of the invention is at above-mentioned actual needs, a kind of steel concrete beam type stair and job practices of slidably constructing the end that be provided with proposed, by changing the connected mode of stair end, make it when earthquake, postpone destruction, and reduce the adverse effect to agent structure.
The present invention adopts following technical scheme:
The present invention proposes is provided with the steel concrete beam type stair of slidably constructing the end, comprise bench cant beam, bench step plate, bench bottom girder, the upper end supporting beam at bench upper end floor or half space place, the lower end supporting beam at bench lower end floor or half space place and be arranged at the bench lower end and the lower end supporting beam between separation layer; Described bench cant beam, bench step plate and bench bottom girder monobloc cast become bench, and the bench step plate is supported on the bench cant beam, and the bench bottom girder is to be positioned at bench horizontal beam bottom, and next stage that can the double as bench is marked time; Bench upper end and upper end supporting beam monobloc cast, the bench lower end is shelved and is supported on the supporting beam of lower end; The lower end supporting beam is to separate arrangement of reinforcement fully, build the member of making respectively with bench, can be square-section, L shaped cross section or T section; The concrete surface that the lower end supporting beam is used for the supporting bench is made into smooth smooth horizontal supporting face, and completely spreads isolated material to form separation layer, and lower end supporting beam and bench are separated up and down, forms the structure that relative horizontal slip can take place for the two; Described isolated material can adopt materials such as polyethylene plastic film, malthoid; The bench lower end is except the supporting between described and the lower end supporting beam contacts; remainder and lower end supporting beam and this place comprise between other all adjacent components of main part of architectural construction layer and all keep the space; the isolation strip of perhaps establishing the filling flexible material separates; to avoid rigid collision, guarantee to slide.Described filling flexible material can adopt polystyrene board etc.
Construction sequence of the present invention is:
A, build the lower end supporting beam that is positioned at the bench lower end earlier, and the concrete surface of using it for direct supporting bench lower end all is made into smooth smooth horizontal supporting face;
B, isolated material is covered on the above-mentioned horizontal supporting face of lower end supporting beam, forms separation layer;
The bottom template of the separation layer double as bench lower end on c, the above-mentioned horizontal supporting face of following end bearing beam, the concrete of itself and lower end supporting beam is separated up and down, then the monobloc cast reinforced concrete construction of finishing the bench be made up of bench cant beam, bench step plate and bench bottom girder and upper end supporting beam is made, and bench bottom girder wherein can double as bench step plate, and next stage is marked time;
D, make and during the follow-up constructions such as architectural construction layer making of adjacent regions at the reinforced concrete construction that carries out bench, lower end supporting beam, should guarantee the bench lower end except with the lower end supporting beam between have above-mentioned supporting contacts, remainder and lower end supporting beam and this place comprise between other all adjacent components of main part of architectural construction layer and all keep a fixed gap that the isolation strip of perhaps establishing flexible materials such as filled polystyrene plate separates.
Operating principle of the present invention is: steel concrete beam type stair arrange sliding support in each bench lower end in above-mentioned easy mode, make overall structure when the occurred level sidesway, the horizontal supporting face place between bench lower end and the lower end supporting beam can produce certain frictional resistance.When no geological process or geological process hour, the frictional resistance that produces can make herein and not slide, and is conducive to normal use.In case geological process is bigger, then can slide by occurred level herein, the destruction of avoiding stair as oblique support agent structure to be had considerable influence, increases the weight of agent structure also can avoid stair to destroy more in advance because self is stressed.
Simultaneously, this steel concrete beam type stair of slidably constructing the end that are provided with are convenient to construction, simple structure; Isolated material is selected cheap materials such as plastic foil, malthoid for use, can reduce cost, compares with the steel concrete beam type stair that slidably construct no end, and expense is close.
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 schematic diagram when being provided with the steel concrete beam type stair of slidably constructing the end end bearing beam being the square-section instantly;
Fig. 2 is the A-A sectional drawing of Fig. 1;
Fig. 3 is the vertical section schematic diagram when being provided with the steel concrete beam type stair of slidably constructing the end end bearing beam being L shaped cross section instantly;
Fig. 4 is the B-B sectional drawing of Fig. 3;
Among the figure: 1, lower end supporting beam, 2, the upper end supporting beam, 3, separation layer, 4, the isolation strip of flexible material, 5, the architectural construction layer, 6, the bench cant beam, 7, the bench step plate, 8, the bench bottom girder.
The specific embodiment
The present invention is described further below in conjunction with the drawings and specific embodiments:
Embodiment 1:
Fig. 1～Fig. 2 is the application when being provided with the steel concrete beam type stair of slidably constructing the end end bearing beam being the square-section instantly.During construction, with lower end supporting beam 1 build finish after, the entire area scope that supporting beam 1 concrete upper surface in lower end is used for supporting bench lower end is made into smooth smooth horizontal supporting face, and polyethylene plastic film is covered on the above-mentioned horizontal supporting face of lower end supporting beam 1, forms separation layer 3; When building the bench of being formed by bench cant beam 6, bench step plate 7 and bench bottom girder 8, bench step plate 7 is supported on the below of bench cant beam 6, the next stage of bench bottom girder 8 double as bench is marked time, and with the bottom template of the separation layer 3 double as bench lower ends that are positioned at lower end supporting beam 1 concrete upper surface, finish the reinforced concrete construction of bench and upper end supporting beam 2 by the monobloc cast mode and make, be provided with the steel concrete beam type stair of slidably constructing the end thereby constitute; The bench lower end except with lower end supporting beam 1 between supporting contact, all keep a fixed gap between itself and architectural construction layer 5 and other adjacent components, the isolation strip 4 of perhaps establishing flexible materials such as filled polystyrene plate separates.
Embodiment 2:
Fig. 3～Fig. 4 is the application when being provided with the steel concrete beam type stair of slidably constructing the end end bearing beam being L shaped cross section instantly.During construction, with lower end supporting beam 1 build finish after, whole bearing area scopes of using it for the concrete surface of direct supporting bench lower end are made into smooth smooth horizontal supporting face, and polyethylene plastic film are covered on the above-mentioned horizontal supporting face of lower end supporting beam 1, form separation layer 3; When building the bench of being formed by bench cant beam 6, bench step plate 7 and bench bottom girder 8, bench step plate 7 is supported on the top of bench cant beam 6, the next stage of bench bottom girder 8 double as bench is marked time, and to be positioned at the bottom template of the separation layer 3 double as bench lower ends on the lower end supporting beam 1 above-mentioned horizontal supporting face, finish the reinforced concrete construction of bench and upper end supporting beam 2 by the monobloc cast mode and make, be provided with the steel concrete beam type stair of slidably constructing the end thereby constitute; The bench lower end except with lower end supporting beam 1 between supporting contact, remainder and lower end supporting beam 1 and architectural construction layer 5 wait between other all adjacent components and all keep a fixed gap, the isolation strip 4 of perhaps establishing flexible materials such as filled polystyrene plate separates.
It should be noted that at last: above embodiment is only in order to illustrate the present invention and unrestricted technical scheme described in the invention; Therefore, although this manual has been described in detail with reference to above-mentioned the present invention of each 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 technical scheme and the improvement thereof of the spirit and scope of invention, and it all should be encompassed in the middle of the claim scope of the present invention.
Claims (5)
1. one kind is provided with the steel concrete beam type stair of slidably constructing the end, it is characterized in that: comprise bench cant beam (6), bench step plate (7), bench bottom girder (8), be positioned at bench upper end floor or half space place upper end supporting beam (2), be positioned at the lower end supporting beam (1) at bench lower end floor or half space place and be arranged at the bench lower end and lower end supporting beam (1) between separation layer (3); Described bench cant beam (6), bench step plate (7) and bench bottom girder (8) monobloc cast become bench, and bench step plate (7) is supported on bench cant beam (6), and bench bottom girder (8) is to be positioned at bench horizontal beam bottom; The upper end of bench and upper end supporting beam (2) monobloc cast, bench lower end are shelved and are supported on the lower end supporting beam (1); Lower end supporting beam (1) is the member that separates arrangement of reinforcement fully, builds respectively with bench, the concrete surface that lower end supporting beam (1) is used for the supporting bench is made into smooth smooth horizontal supporting face, and completely spread isolated material to form separation layer (3), lower end supporting beam (1) and bench are separated up and down, form the structure that relative horizontal slip can take place for the two.The bench lower end is except the supporting between described and the lower end supporting beam (1) contacts; remainder and lower end supporting beam (1) and this place comprise between all adjacent components of main part of architectural construction layer (5) and all keep the space; the isolation strip (4) of perhaps establishing the filling flexible material separates; to avoid rigid collision, guarantee to slide.
2. a kind of steel concrete beam type stair of slidably constructing the end that are provided with according to claim 1, it is characterized in that: lower end supporting beam (1) can be square-section, L shaped cross section or T section.
3. a kind of steel concrete beam type stair of slidably constructing the end that are provided with according to claim 1 is characterized in that: described isolated material employing polyethylene plastic film or malthoid.
4. a kind of steel concrete beam type stair of slidably constructing the end that are provided with according to claim 1 is characterized in that: described filling flexible material employing polystyrene board.
5. claim 1,2,3, the described a kind of job practices that is provided with the steel concrete beam type stair of slidably constructing the end of 4 arbitrary claims is characterized in that: the steps include:
A, build the lower end supporting beam (1) that is positioned at the bench lower end earlier, and the concrete surface of using it for direct supporting bench lower end all is made into smooth smooth horizontal supporting face;
B, isolated material is covered on the above-mentioned horizontal supporting face of lower end supporting beam (1), forms separation layer (3);
The bottom template of separation layer (3) the double as bench lower end on c, the above-mentioned horizontal supporting face of following end bearing beam (1), the concrete of itself and lower end supporting beam (1) is separated up and down, and then monobloc cast is finished the bench be made up of bench cant beam (6), bench step plate (7) and bench bottom girder (8) and the reinforced concrete construction of upper end supporting beam (2) is made;
D, make and during the follow-up constructions such as architectural construction layer (5) making of adjacent regions at the reinforced concrete construction that carries out bench, lower end supporting beam (1), guarantee the bench lower end except with lower end supporting beam (1) between have above-mentioned supporting contacts, remainder and lower end supporting beam (1) and this place comprise between all adjacent components of main part of architectural construction layer (5) and all keep the space that the isolation strip (4) of perhaps establishing the filling flexible material separates.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310125730XA CN103195215A (en) | 2013-04-11 | 2013-04-11 | Reinforced concrete stringer stairway with slidable end structures and method for constructing reinforced concrete stringer stairway |
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| CN201310125730XA CN103195215A (en) | 2013-04-11 | 2013-04-11 | Reinforced concrete stringer stairway with slidable end structures and method for constructing reinforced concrete stringer stairway |
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| CN103195215A true CN103195215A (en) | 2013-07-10 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103758299A (en) * | 2014-02-08 | 2014-04-30 | 江苏中南建筑产业集团有限责任公司 | Anti-seismic stairs with sliding support and construction method thereof |
| 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 |
| CN104818809A (en) * | 2015-04-15 | 2015-08-05 | 天津大学 | Construction method for combined plate staircase |
| 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 |
| CN105401701A (en) * | 2015-12-10 | 2016-03-16 | 广州大学 | Reinforced concrete stairs shock isolating mode and construction method |
| CN112127557A (en) * | 2020-10-20 | 2020-12-25 | 上海泰大建筑科技有限公司 | Fully-assembled prefabricated staircase |
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| 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 |
| CN102383552A (en) * | 2011-08-31 | 2012-03-21 | 中国建筑西南设计研究院有限公司 | Separation type damping stair |
| CN102605909A (en) * | 2012-04-06 | 2012-07-25 | 北京工业大学 | Reinforced concrete platy stair with simple sliding support and construction method |
| CN102619308A (en) * | 2012-03-06 | 2012-08-01 | 北京工业大学 | Reinforced concrete stair with local steel plate type sliding device on support |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| CN103758299A (en) * | 2014-02-08 | 2014-04-30 | 江苏中南建筑产业集团有限责任公司 | Anti-seismic stairs with sliding support and construction method thereof |
| CN103758299B (en) * | 2014-02-08 | 2016-08-17 | 江苏中南建筑产业集团有限责任公司 | The antidetonation stair of tool sliding support and construction method thereof |
| 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 |
| CN104818809A (en) * | 2015-04-15 | 2015-08-05 | 天津大学 | Construction method for combined plate staircase |
| CN104818809B (en) * | 2015-04-15 | 2017-04-19 | 天津大学 | Construction method for combined plate staircase |
| 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 |
| CN105401701A (en) * | 2015-12-10 | 2016-03-16 | 广州大学 | Reinforced concrete stairs shock isolating mode and construction method |
| CN112127557A (en) * | 2020-10-20 | 2020-12-25 | 上海泰大建筑科技有限公司 | Fully-assembled prefabricated staircase |
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Application publication date: 20130710 |