CN203905331U - Cast-in-place plate-type staircase with seamless steps - Google Patents

Cast-in-place plate-type staircase with seamless steps Download PDF

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Publication number
CN203905331U
CN203905331U CN201420352909.9U CN201420352909U CN203905331U CN 203905331 U CN203905331 U CN 203905331U CN 201420352909 U CN201420352909 U CN 201420352909U CN 203905331 U CN203905331 U CN 203905331U
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China
Prior art keywords
slab
cast
plate
seamless
slide
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CN201420352909.9U
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Chinese (zh)
Inventor
常登荣
涂刚要
李新
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HEFEI CONSTRUCTION ENGINEERING GROUP Co Ltd
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HEFEI CONSTRUCTION ENGINEERING GROUP Co Ltd
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Abstract

The utility model discloses a cast-in-place plate-type staircase with seamless steps. The cast-in-place plate-type staircase comprises step plates, supporting members and slide components, and is characterized in that a beam-slab supporting member on the upper end of each step plate and the step plate are integrally cast, the slide components are arranged on the lower ends of the step plates, each step plate is separated from a lower end supporting member through the corresponding slide component for reinforcement and pouring to form a slide end, and each slide component comprises two steel plates, graphite powder and reinforcing steel bar anchor bolts, wherein the reinforcing steel bar anchor bolts are welded on a single surface of the steel plate, and the graphite powder is laid between the two steel plates to form a slide layer. According to the cast-in-place plate-type staircase with seamless steps, while the construction appearance quality of the staircase is guaranteed, the damage to the staircase can be effectively delayed or alleviated in an earthquake, so that conditions can be created for escaping of people or precious time can be won for people to escape.

Description

The cast-in-place slab type stairway that a kind of bench is seamless
Technical field
The utility model relates to the construction field of stair, is specifically widely used in all kinds of areas, is particularly useful for the seamless cast-in-place slab type stairway of a kind of bench of the civilian public building structural system of earthquake prone areas.
Background technology
Stair are important components as floor gap vertical transportation in building.Traditional cast-in-place slab type stairway, considers that two ends are fixed end, need to be step plate 1/3 place's indwelling constuction joint at smallest shearing force place.The indwelling of constuction joint has increased difficulty to the construction of stair, and often occur that constuction joint place concrete aggregate is concentrated, loose, the new-old concrete of concrete connects the shortcomings such as stubble is obvious, in addition,, in all previous earthquake, it is all more serious that traditional method stair are subject to the destruction of earthquake horizontal force.Therefore, take certain measure to improve stair presentation quality, to reduce stair earthquake very important.
Utility model content
The purpose of this utility model is to provide the seamless cast-in-place slab type stairway of a kind of bench, in ensureing stair construction presentation quality, earthquake also can effectively delay stair the time of destroying occurs while generation, or alleviate the degree that stair destroy, thereby create conditions or win the quality time for personnel's escape.
The technical solution of the utility model is as follows:
Bench is seamless cast-in-place slab type stairway, comprise waist slab, supporting member, slide assemblies, the beam-slab bracing system member of waist slab upper end and the cast of waist slab one, between the terraced beam bridging piece of waist slab lower surface and landing slab, slide assemblies is set, landing slab below is provided with terraced beam, described slide assemblies comprises the steel plate that is embedded in respectively terraced beam bridging piece upper surface, waist slab soffit, reinforcing bar anchor pin bury underground in concrete and and Plate Welding, graphite powder is laid between two block plates and forms sliding layer.
In sum, the utility model is for the stair in building, a kind of effective technology measure that its presentation quality is good, anti-seismic performance is excellent that makes is provided, easy and simple to handle, cost is reasonable, be widely used in all kinds of areas, be specially adapted to the frame construction of Seismic Design Requirements, there is good popularizing application prospect.
Brief description of the drawings
Fig. 1 is the utility model stair generalized sections.
Fig. 2 is the A-A generalized section of Fig. 1.
Fig. 3 is the schematic diagram of slide assemblies.
Fig. 4 is that steel plate anchor pin is arranged schematic diagram.
In figure: 1, reinforced concrete beam, 2, waist slab, 3, terraced beam, 4, landing slab, 5, graphite bisque, 6, terraced beam bridging piece, 7, reinforcing bar anchor pin, 8, steel plate.
Detailed description of the invention
By reference to the accompanying drawings the utility model is done to following further description:
Bench is seamless cast-in-place slab type stairway, comprise waist slab 2, supporting member, slide assemblies, the beam-slab bracing system member of waist slab 2 upper ends and waist slab 2 one cast, between the terraced beam bridging piece 6 of waist slab 2 lower surfaces and landing slab 4, slide assemblies is set, landing slab 4 belows are provided with terraced beam 3, slide assemblies comprises the steel plate 8 that is embedded in respectively terraced beam bridging piece 6 upper surfaces, waist slab 2 soffits, reinforcing bar anchor pin 7 is buried underground in concrete and is welded with steel plate 8, and graphite powder 5 is laid between two block plates 8 and forms sliding layer.
The cast-in-place slab type stairway construction method that bench is seamless, comprises following construction sequence:
A, template are installed, stair adopt Φ 48 × 3.5 mm steel pipe scaffolds, vertical pole ' s span 1200mm*1200mm, apart from the ground, 200mm establishes in length and breadth to the bar of sweeping the floor, middle by step pitch 1500mm, horizon bar is set, U-shaped holder is installed at top, by stair slope in length and breadth to the wooden a tree, used in making timber for boats of 50mm × 100mm of setting space 250mm, on wood a tree, used in making timber for boats, lay the thick veneer of 18mm, simultaneously vertical good staristep side form;
Pre-embedded steel slab on b, supporting member
Supporting member reinforcing bar binding is complete, qualified by inspection after by pre-buried the steel plate that is equal to the length and width size of marking time, check its horizontal level and absolute altitude, check after errorless the anchor pin of pre-embedded steel slab and floor structure reinforcing bar carried out to spot welding;
C, laying graphite powder
First clean out the upper surface of supporting member steel plate, remove the mud foreign material such as concrete, and rinse well, dry with clear water, make frame in the surrounding of the upper surface of supporting member steel plate with white foam bar; Smear graphite powder is laid on steel plate equably with iron, laying depth is 3mm;
D, pre-buried bench lower end steel plate
The steel plate of staristep lower end is placed on graphite powder by design size requirement, detects its horizontal level and absolute altitude, and compacting steel plate;
E, staristep reinforcing bar binding, on staristep bed die, draw the position line of main muscle and distribution bar, according to the direction of the main muscle of design drawing, distribution bar, colligation distribution bar after the main muscle of first colligation, each intersection point all should colligation, plate muscle upper end will anchor in beam, bottom plate muscle stretches into top surface of steel plate, after base plate muscle has been tied up, and colligation plate top reinforcement, the template of marking time is installed again and hangs mould, main muscle joint quantity and position all will meet construction and standards of acceptance requirement;
F, build bench lower end concrete
After colligation staristep reinforcing bar, before concreting, again check position and the absolute altitude of steel plate, guarantee errorless after-pouring concrete;
G, staristep concreting
Staristep concrete is built from bottom to top, and first jolt ramming underplate concrete, reaches while marking time position and vibrate together with the concrete of marking time, constantly boost continuously, and floating with wood float or the plastics trowel upper surface of marking time at any time;
H, concrete curing
After concreting, should in 12h, be covered and water, irrigation times should be able to keep concrete to have enough wetting states, and curing time is no less than 7 round the clock.
When construction, the length that stair bridging piece 6 is chosen is equal to the bottom width of marking time of waist slab 2, thickness is more than or equal to the thickness of waist slab 2, before concreting, steel plate 8 is positioned over above stair bridging piece 6 arrangements of reinforcement and reinforcing bar anchor pin 7 down, reinforcing bar anchor pin 7 is fixed with the 6 arrangement of reinforcement colligations of stair bridging piece, and then graphite powder 5 is paved on steel plate 8 surfaces, graphite powder 5 is placed above steel plate 8 and reinforcing bar anchor pin 7 upward after paving evenly, the longitudinal reinforcement colligation that extends to steel plate 8 surfaces with the interior arrangement of reinforcement of waist slab 2 is fixed, finally complete successively landing slab 4, reinforced concrete beam 1, ladder beam 3, the concreting of stair bridging piece 6 and waist slab 2, thereby form the seamless cast-in-place slab type stairway of a kind of bench.

Claims (1)

1. the seamless cast-in-place slab type stairway of bench, comprise waist slab, supporting member, slide assemblies, it is characterized in that, the beam-slab bracing system member of waist slab upper end and the cast of waist slab one, between the terraced beam bridging piece of waist slab lower surface and landing slab, slide assemblies is set, landing slab below is provided with terraced beam, described slide assemblies comprises the steel plate that is embedded in respectively terraced beam bridging piece upper surface, waist slab soffit, reinforcing bar anchor pin bury underground in concrete and and Plate Welding, graphite powder is laid between two block plates and forms sliding layer.
CN201420352909.9U 2014-06-27 2014-06-27 Cast-in-place plate-type staircase with seamless steps Active CN203905331U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420352909.9U CN203905331U (en) 2014-06-27 2014-06-27 Cast-in-place plate-type staircase with seamless steps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420352909.9U CN203905331U (en) 2014-06-27 2014-06-27 Cast-in-place plate-type staircase with seamless steps

Publications (1)

Publication Number Publication Date
CN203905331U true CN203905331U (en) 2014-10-29

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Application Number Title Priority Date Filing Date
CN201420352909.9U Active CN203905331U (en) 2014-06-27 2014-06-27 Cast-in-place plate-type staircase with seamless steps

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

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