CN104060781A - Cast-in-situ cranked slab stair without seams at stair sections and construction method - Google Patents
Cast-in-situ cranked slab stair without seams at stair sections and construction method Download PDFInfo
- Publication number
- CN104060781A CN104060781A CN201410300969.0A CN201410300969A CN104060781A CN 104060781 A CN104060781 A CN 104060781A CN 201410300969 A CN201410300969 A CN 201410300969A CN 104060781 A CN104060781 A CN 104060781A
- Authority
- CN
- China
- Prior art keywords
- stair
- slab
- steel plate
- concrete
- cast
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
The invention discloses a cast-in-situ cranked slab stair without seams at stair sections. The cast-in-situ cranked slab stair comprises a stair section plate, a support component and a sliding assembly and is characterized in that a beam plate support component arranged at the upper end of the stair section plate and the stair section plate are integrally cast, the lower end of the stair section plate is provided with the sliding assembly, a sliding end is formed in a mode of adopting separated reinforcing bar installing and casting by the stair section plate and the support component at the lower end through the sliding assembly, the sliding assembly comprises two steel plates, graphite powder and steel bar anchor feet, the steel bar anchor feet are welded on the single side of the steel plates, and the graphite powder is paved between the two steel plates for forming a sliding layer. The cast-in-situ cranked slab stair has the advantages that the appearance quality of the stair construction is ensured, meanwhile, when earthquake occurs, the stair damage time can also be delayed, or the stair damage degree can be reduced, so conditions can be created or precious time can be won for personnel to escape.
Description
Technical field
The present invention relates to the construction field of stair, be specifically widely used in all kinds of areas, be particularly useful for seamless cast-in-place slab type stairway and the construction method of a kind of bench of the civilian public building structural system of earthquake prone areas.
Background technology
Stair are as the important component of floor gap vertical transportation in building.Traditional cast-in-place slab type stairway, considers that two ends are fixed end, need to be that constuction joint is kept somewhere at step plate 1/3 place 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, concrete is loose, new-old 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.
Summary of the invention
The object of this invention is to provide a kind of bench seamless cast-in-place slab type stairway and construction method, when guaranteeing stair construction presentation quality, earthquake also can effectively delay stair the time of destroying occurs while occurring, or alleviate the degree that stair destroy, thereby create conditions or win the quality time for personnel's escape.
Technical scheme of the present invention 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.
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, the steel plate that is equal to the length and width size of marking time is pre-buried after qualified by inspection, checks its horizontal level and absolute altitude, checks after errorless the anchor pin of pre-embedded steel slab and floor structure reinforcing bar are 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, in the surrounding of the upper surface of supporting member steel plate, with white foam bar, make frame; With iron, smear graphite powder is laid on steel plate equably, 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 with interior, covered and water at 12h, irrigation times should be able to keep concrete to have enough wetting states, and curing time is no less than 7 round the clock.
Compared with prior art, useful technique effect of the present invention is as follows:
1, adopt sliding support that integral cast-in-situ stair are divided into two sections of constructions, avoided 1/3 position in the middle of staristep to establish because staying the construction inconvenience that constuction joint brings.
2, avoided that the constuction joint place concrete aggregate that constuction joint occurs is concentrated, concrete is loose because arranging, new-old concrete connects the shortcomings such as stubble is obvious.
3, when earthquake occurs, can effectively delay the time that stair occur to destroy, or alleviate the degree that stair destroy, thereby create conditions or win the quality time for personnel's escape.
In sum, the present invention 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.
Accompanying drawing explanation
Fig. 1 is stair generalized section of the present invention.
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.
The specific embodiment
By reference to the accompanying drawings the present invention is made 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 with steel plate 8 and is welded, 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, the steel plate that is equal to the length and width size of marking time is pre-buried after qualified by inspection, checks its horizontal level and absolute altitude, checks after errorless the anchor pin of pre-embedded steel slab and floor structure reinforcing bar are 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, in the surrounding of the upper surface of supporting member steel plate, with white foam bar, make frame; With iron, smear graphite powder is laid on steel plate equably, 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 with interior, covered and water at 12h, irrigation times should be able to keep concrete to have enough wetting states, and curing time is no less than 7 round the clock.
During 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 (2)
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.
2. the seamless cast-in-place slab type stairway construction method of bench, is characterized in that, 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, the steel plate that is equal to the length and width size of marking time is pre-buried after qualified by inspection, checks its horizontal level and absolute altitude, checks after errorless the anchor pin of pre-embedded steel slab and floor structure reinforcing bar are 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, in the surrounding of the upper surface of supporting member steel plate, with white foam bar, make frame; With iron, smear graphite powder is laid on steel plate equably, 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 with interior, covered and water at 12h, irrigation times should be able to keep concrete to have enough wetting states, and curing time is no less than 7 round the clock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410300969.0A CN104060781A (en) | 2014-06-27 | 2014-06-27 | Cast-in-situ cranked slab stair without seams at stair sections and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410300969.0A CN104060781A (en) | 2014-06-27 | 2014-06-27 | Cast-in-situ cranked slab stair without seams at stair sections and construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104060781A true CN104060781A (en) | 2014-09-24 |
Family
ID=51548694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410300969.0A Pending CN104060781A (en) | 2014-06-27 | 2014-06-27 | Cast-in-situ cranked slab stair without seams at stair sections and construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104060781A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104278803A (en) * | 2014-10-24 | 2015-01-14 | 苏州工业园区设计研究院股份有限公司 | Reinforced concrete stair sliding support |
| 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 |
| CN104533033A (en) * | 2014-12-17 | 2015-04-22 | 苏州工业园区设计研究院股份有限公司 | Ladder adopting sliding ladder beam |
| CN104947865A (en) * | 2015-07-03 | 2015-09-30 | 山东科技大学 | Middle separation type reinforced concrete quake preventing stairway and construction method |
| 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 |
| CN108457433A (en) * | 2018-01-29 | 2018-08-28 | 中国建筑第八工程局有限公司 | The construction method of stair sliding support |
| CN110593501A (en) * | 2019-08-27 | 2019-12-20 | 中建四局第六建筑工程有限公司 | Integral cast-in-place structure of sliding support stair and construction method thereof |
| CN110835989A (en) * | 2019-11-26 | 2020-02-25 | 上海宝冶集团有限公司 | Construction method for stair step and platform cement mortar plastering |
| CN112443083A (en) * | 2020-11-30 | 2021-03-05 | 防城港中一重工有限公司 | Construction method of cast-in-place concrete stair |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001081923A (en) * | 1999-09-09 | 2001-03-27 | Tsuru Gakuen | Stair structure |
| 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 |
| 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 |
| 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 |
| CN203008257U (en) * | 2012-10-23 | 2013-06-19 | 新疆七星建设科技股份有限公司 | Sliding support of stair and concrete precast stair |
| CN203905331U (en) * | 2014-06-27 | 2014-10-29 | 合肥建工集团有限公司 | Cast-in-place plate-type staircase with seamless steps |
-
2014
- 2014-06-27 CN CN201410300969.0A patent/CN104060781A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001081923A (en) * | 1999-09-09 | 2001-03-27 | Tsuru Gakuen | Stair structure |
| 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 |
| 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 |
| 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 |
| CN203008257U (en) * | 2012-10-23 | 2013-06-19 | 新疆七星建设科技股份有限公司 | Sliding support of stair and concrete precast stair |
| CN203905331U (en) * | 2014-06-27 | 2014-10-29 | 合肥建工集团有限公司 | Cast-in-place plate-type staircase with seamless steps |
Non-Patent Citations (2)
| Title |
|---|
| 张华明 杨正凯: "《建筑施工组织》", 31 August 2006, article "单位工程施工组织设计实例", pages: 215-222 * |
| 钱俊: "一端为滑动支座的现浇板式楼梯施工技术", 《建筑》, no. 18, 4 November 2013 (2013-11-04), pages 90 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104278803A (en) * | 2014-10-24 | 2015-01-14 | 苏州工业园区设计研究院股份有限公司 | Reinforced concrete stair sliding support |
| 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 |
| CN104533033A (en) * | 2014-12-17 | 2015-04-22 | 苏州工业园区设计研究院股份有限公司 | Ladder adopting sliding ladder beam |
| CN104947865A (en) * | 2015-07-03 | 2015-09-30 | 山东科技大学 | Middle separation type reinforced concrete quake preventing stairway and construction method |
| 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 |
| CN108457433A (en) * | 2018-01-29 | 2018-08-28 | 中国建筑第八工程局有限公司 | The construction method of stair sliding support |
| CN108457433B (en) * | 2018-01-29 | 2020-08-04 | 中国建筑第八工程局有限公司 | Construction method of stair sliding support |
| CN110593501A (en) * | 2019-08-27 | 2019-12-20 | 中建四局第六建筑工程有限公司 | Integral cast-in-place structure of sliding support stair and construction method thereof |
| CN110835989A (en) * | 2019-11-26 | 2020-02-25 | 上海宝冶集团有限公司 | Construction method for stair step and platform cement mortar plastering |
| CN112443083A (en) * | 2020-11-30 | 2021-03-05 | 防城港中一重工有限公司 | Construction method of cast-in-place concrete stair |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104060781A (en) | Cast-in-situ cranked slab stair without seams at stair sections and construction method | |
| CN101906768B (en) | Panel construction method of concrete faced rock-fill dam | |
| CN207194006U (en) | A kind of prefabricated concrete retaining wall | |
| CN204343339U (en) | A kind of temporary support columns waterproof base plate | |
| CN103469806A (en) | Construction method for replacing brick forming die with prefabricated concrete foundation bearing platform side die | |
| CN109457568B (en) | Construction process for prefabricated post-tensioning prestressed assembly pavement of bilateral superposed beam | |
| CN205576955U (en) | Raft foundation's reinforced structure is displaced into to strip footing | |
| CN103161176B (en) | Tower crane foundation construction method in main building disjunctor garage | |
| CN105275097A (en) | A post-cast strip water-stop steel plate and demolition-free template net installing method | |
| CN204825557U (en) | Job site interim construction road combination ground structure | |
| CN108979132A (en) | Floor post-cast strip template support system | |
| CN105369826A (en) | Basement bearing platform side mold construction method | |
| CN203905331U (en) | Cast-in-place plate-type staircase with seamless steps | |
| CN106639196A (en) | Construction method for cast-in-place slab staircase with the lower end provided with steel plate sliding support | |
| CN206667459U (en) | A kind of pre-splicing Standard formula building of prefabrication type reinforced concrete shear wall | |
| CN205444201U (en) | Reinforced concrete waist rail structure | |
| CN104328790A (en) | Cast-in-situ sprayed concrete hidden bearing platform and hidden ground beam molding bed | |
| CN104088473A (en) | Construction structure and method used for underpinning load-bearing wall | |
| CN107237448B (en) | The prefabricated interior fill concrete wallboard of one kind and its manufacturing method | |
| CN105332386A (en) | Structure construction method for tower crane foundation serving as basement bottom plate | |
| CN206245730U (en) | A kind of cast-in-place pitched roof double template structure | |
| CN204645093U (en) | Poured band of outer wall of basement advanced processing constructs | |
| KR101120588B1 (en) | Vertical joint frame for improving monolithic concrete | |
| CN207376642U (en) | A kind of additional elevator is to a point prefabricated assembled basis | |
| CN205637707U (en) | Swimming pool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140924 |
|
| RJ01 | Rejection of invention patent application after publication |