CN102661017A - Quick-mounting type concrete stair and mounting method thereof - Google Patents
Quick-mounting type concrete stair and mounting method thereof Download PDFInfo
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- CN102661017A CN102661017A CN2012101639460A CN201210163946A CN102661017A CN 102661017 A CN102661017 A CN 102661017A CN 2012101639460 A CN2012101639460 A CN 2012101639460A CN 201210163946 A CN201210163946 A CN 201210163946A CN 102661017 A CN102661017 A CN 102661017A
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Abstract
The invention discloses a quick-mounting type concrete stair and a mounting method of the quick-mounting type concrete stair. The quick-mounting type concrete stair comprises a prefabricated flight, a cast-in-place upper layer stair platform, a cast-in-place lower layer stair platform, a cast-in-place upper layer stair beam and a cast-in-place lower layer stair beam, wherein at least two flight pre-buried elements are respectively pre-buried on the vertical surfaces of the connecting ends of the prefabricated flight, the cast-in-place upper layer stair platform and the cast-in-place lower layer stair platform, the flight pre-buried elements are buried in the vertical surfaces on the two ends of the prefabricated flight, a lifting element is pre-buried on the prefabricated flight, L-shaped lapping openings lapped with the prefabricated flight are preserved on the upper corners of the cast-in-place upper layer stair beam and the cast-in-place lower layer stair beam, at least two stair beam pre-buried elements are pre-buried on an upper table top close to the lapping openings, the positions of the stair beam pre-buried elements and the flight pre-buried elements are one-to-one correspondent to each other, and the flight pre-buried elements and the stair beam pre-buried elements are welded and fixed by angle iron. With the adoption of the quick-mounting type concrete stair disclosed by the invention, the technical defects of complex construction technique of firstly binding reinforcing steel bars and pouring concrete and long time of the concrete stair, and the necessity of prefabricating of all flights, platform plates and stair beams in the traditional concrete prefabricated stair are overcome.
Description
Technical field
The present invention relates to a kind of building unit and mounting method thereof, particularly a kind of concrete precast stair and mounting method thereof.
Background technology
Stair are one of very important structural element in the housing construction structure, and generally speaking, stair adopt cast-in-situ concrete to build.Because the Irregular Building Structures member of stair for tilting during cast-in-place construction, brings very big inconvenience for support of stair template and concreting, causes the physical dimension deviation very big, concrete is accomplished effect and also can not get guaranteeing.In addition; Cast-in-place stair adopt the stair reinforcing bar are embedded in the agent structure, and agent structure concreting after accomplishing is picked out embedded bar, carry out the staircase structure construction again; Staircase structure is not to construct simultaneously with agent structure; Stair can not use as occasional passage, must set up the vertical transport passage in addition, cause very big waste.The existing concrete stair generally adopt the way of pouring concrete after the first assembling reinforcement, and this method exists construction technology complicated, the technological deficiency that the engineering time is long.It is prefabricated to also have terraced beam all to carry out bench, landing slab in the conventional concrete precast stair, and process is more loaded down with trivial details and globality is poor.
Summary of the invention
The purpose of this invention is to provide a kind of ready-package concrete staircase and mounting method thereof; Pouring concrete exists construction technology complicated after having solved the first assembling reinforcement of existing concrete stair; The technological deficiency that engineering time is long has solved in the conventional concrete precast stair and also has terraced beam need all carry out technological deficiency prefabricated and that installation process is more loaded down with trivial details bench, landing slab.
For realizing above-mentioned purpose, the present invention adopts following technical scheme:
A kind of ready-package concrete staircase; Comprise prefabricated bench, cast-in-place upper strata landing, cast-in-place lower floor landing, cast-in-place upper strata ladder beam and cast-in-place lower floor ladder beam; Be embedded with at least two bench built-in fittings respectively on the vertical surface of said prefabricated bench and cast-in-place upper strata landing and cast-in-place lower floor landing link; Said bench built-in fitting is embedded in the two ends facade of prefabricated bench, and said prefabricated bench is embedded with lifting part
Beam is cast-in-place is integral for cast-in-place upper strata landing and cast-in-place upper strata ladder; Beam is cast-in-place is integral for cast-in-place lower floor landing and cast-in-place lower floor ladder; The upper corner of cast-in-place upper strata ladder beam and cast-in-place lower floor ladder beam all is reserved with " L " type of the prefabricated bench of overlap joint and takes mouth; Be covered with leveling layer on the horizontal plane in said take mouthful, be perfused with tack coat between the facade of taking mouthful and the prefabricated bench, be embedded with at least two terraced beam built-in fittings near the upper table surface of taking mouth; Said terraced beam built-in fitting is corresponding one by one with the position of bench built-in fitting, and is fixing with the angle steel welding between said bench built-in fitting and the terraced beam built-in fitting.
Said lifting part can be that symmetry is pre-buried in two couples lifting bolt on both sides, prefabricated bench stage casing, on the lifting bolt hoisting ring is arranged.
Be reserved with the stair railing hole on the said prefabricated bench.
The center of the center of said bench built-in fitting and terraced beam built-in fitting all is not less than 200mm from prefabricated bench rear and front end.
Said bench built-in fitting and terraced beam built-in fitting all are to be welded by opposed steel plate in two block gaps and the dowel that is connected between two steel plates.
Said leveling layer can be pea gravel concreten or mortar.
Said tack coat can be flexible grouting material of high-strength nothing or polymer mortar slurry.
A kind of mounting method of ready-package concrete staircase as previously discussed, step is following:
Step 1: prefabricated bench is carried out prefabricated processing by the drawing design size, and imbed at least two bench built-in fittings on the vertical surface of terraced beam link, in prefabricated bench, reserving the stair railing hole simultaneously, pre-buried lifting part in prefabricated bench,
Step 3: existing at the construction field (site) terraced beam is cast-in-place is integral with cast-in-place upper strata landing and cast-in-place upper strata; Beam is cast-in-place is integral with cast-in-place lower floor landing and cast-in-place lower floor ladder; And reserve " L " type at the upper corner of cast-in-place upper strata ladder beam and cast-in-place lower floor ladder beam and take mouth, in advance terraced beam built-in fitting is imbedded the position corresponding with the bench built-in fitting before building;
Step 4: after treating that cast-in-situ concrete reaches predetermined strength, the horizontal plane upper berth leveling layer in two take mouthful, then with prefabricated bench hoisted in position, taking on the mouth of upper and lower layer of terraced beam put at the two ends of prefabricated bench respectively;
Step 5: installation in position is through after comprehensive measurement and meeting design requirement; Use angle steel to use the full weld double welding to be welded as a whole bench built-in fitting and terraced beam built-in fitting, weld again if the built-in fitting outside has unnecessary concrete surface layer will reject unnecessary concrete top layer earlier;
Step 6: prefabricated bench and platform beam slab are being taken vertical slit place's perfusion tack coat of mouth.
The bench built-in fitting in the said step 1 and the pre-buried mode of the terraced beam built-in fitting in the step 3 are dowel perforation plug welding.
The length of said dowel is for being not less than 300mm.
Compared with prior art the present invention has following characteristics and beneficial effect:
The present invention has overcome conventional concrete stair construction technology complicated technology defective; Overcome in the conventional concrete precast stair bench, landing slab have been also had the more loaded down with trivial details defective of the whole prefabricated processes of terraced beam; Only the oblique staristep of more complicated in the staircase structure is taked prefabrication system, construction quality is easy to control, and switching performance is safe and reliable; Good integrity, presentation quality is good.
The present invention has overcome long technological deficiency of engineering time, has improved speed of application, has shortened the construction period, has reduced construction cost.
Description of drawings
Below in conjunction with accompanying drawing the present invention is done further detailed explanation.
Fig. 1 is the side-looking structural representation of ready-package concrete staircase of the present invention.
Fig. 2 is the plan structure sketch map of ready-package concrete staircase of the present invention.
Fig. 3 is the structural representation of A node among Fig. 1.
Fig. 4 is the structural representation of B node among Fig. 1.
Fig. 5 is the side-looking structural representation of bench in the ready-package concrete staircase of the present invention.
Fig. 6 is the plan structure sketch map of bench in the ready-package concrete staircase of the present invention.
Fig. 7 is the structural representation of bench built-in fitting in the ready-package concrete staircase of the present invention.
Fig. 8 is the structural representation of terraced beam built-in fitting in the ready-package concrete staircase of the present invention.
Fig. 9 is the structural representation of ready-package concrete staircase embodiment two of the present invention.
Figure 10 is the structural representation of built-in fitting in the C node of Fig. 9.
Figure 11 is the structural representation of the steel plate of putting more energy into of angle steel in the ready-package concrete staircase of the present invention and angle steel.
Figure 12 is the left TV structure sketch map of Figure 11.
The cast-in-place upper strata of the prefabricated bench of Reference numeral: 1-, the cast-in-place upper strata of 2-landing, the cast-in-place lower floor of 3-landing, 4-ladder beam, the cast-in-place lower floor of 5-ladder beam, 6-bench built-in fitting, 7-stair railing hole, 8-lifting part, 9-ladder beam built-in fitting, 10-leveling layer, 11-tack coat, 12-angle steel, the cast-in-place first layer ground floor of 13-, 14-dowel, the 15-steel plate of putting more energy into.
The specific embodiment
Embodiment one is referring to shown in Fig. 1-4, Fig. 7-8; A kind of ready-package concrete staircase; Comprise prefabricated bench 1, cast-in-place upper strata landing 2, cast-in-place lower floor landing 3, cast-in-place upper strata ladder beam 4 and cast-in-place lower floor ladder beam 5, be embedded with at least two bench built-in fittings 6 respectively on the vertical surface of said prefabricated bench 1 and cast-in-place upper strata landing 2 and cast-in-place lower floor landing 3 links, said bench built-in fitting 6 is embedded in the two ends facade of prefabricated bench 1; Said prefabricated bench 1 is embedded with lifting part 8
Cast-in-place upper strata landing 2 and cast-in-place upper strata ladder beam 4 cast-in-place being integral; Cast-in-place lower floor landing 3 and cast-in-place lower floor ladder beam 5 cast-in-place being integral; The upper corner of cast-in-place upper strata ladder beam 4 and cast-in-place lower floor ladder beam 5 all is reserved with " L " type of the prefabricated bench 1 of overlap joint and takes mouth, is covered with leveling layer 10 on the horizontal plane in said take mouthful, is perfused with tack coat 11 between facade of taking mouthful and the prefabricated bench 1; Upper table surface near taking mouth is embedded with at least two terraced beam built-in fittings 9; Said terraced beam built-in fitting 9 is corresponding one by one with the position of bench built-in fitting 6, and is fixing with angle steel 12 welding between said bench built-in fitting 6 and the terraced beam built-in fitting 9, referring to Figure 11-12; For strength demand, can weld the steel plate 15 of putting more energy in the angle steel 12.
Said lifting part 8 is that symmetry is pre-buried in two couples lifting bolt on both sides, prefabricated bench 1 stage casing, on the lifting bolt hoisting ring is arranged.
Be reserved with stair railing hole 7 on the said prefabricated bench 1.
Shown in Fig. 5-6, the center of the center of said bench built-in fitting 6 and terraced beam built-in fitting 9 all is not less than 200mm from prefabricated bench 1 rear and front end.Said leveling layer 10 can be pea gravel concreten or mortar.Said tack coat 11 can be flexible grouting material of high-strength nothing or polymer mortar slurry.
Embodiment two is referring to shown in Fig. 9-10, and different with embodiment one is that embodiment two is that prefabricated bench is connected with first layer ground, in order to reinforce terraced beam built-in fitting 9, can when processing and fabricating, use dowel 14 to weld an identical terraced beam built-in fitting 9 again.Two terraced beam built-in fittings 9 are opposed steel plate at interval, are connected by dowel 14 perforation plug weldings between two steel plates, and two terraced beam built-in fittings 9 are parallel, and dowel 14 is all vertical with two terraced beam built-in fittings 9.After the prefabricated bench installation, build cast-in-place first layer ground floor 13 and make it become integral body, perfusion leveling layer 10 is fixing between prefabricated bench 1 and the ground floor, and leveling layer 10 can use the C25 pea gravel concreten.
The mounting method of this ready-package concrete staircase, step is following:
Step 1: prefabricated bench 1 is carried out prefabricated processing by the drawing design size; Adopt the C30 concrete; The little 15-20mm in the every limit of length and imbeds at least two bench built-in fittings 6 on the vertical surface of terraced beam link, and the termination before and after the prefabricated bench of the center to center distance of bench built-in fitting 6 is not less than 200mm; The direction setting that the edge is parallel with marking time of prefabricated bench, placed in the middle up and down.
Can use the anchor slab of Q235 steel plate in the present embodiment, be of a size of 150 * 100 * 10mm, in prefabricated bench 1, reserve stair railing hole 7, pre-buried lifting part 8 in prefabricated bench 1 simultaneously as the bench built-in fitting.
Step 3: existing at the construction field (site) with cast-in-place upper strata landing 2 and cast-in-place upper strata ladder beam 4 cast-in-place being integral; With cast-in-place lower floor landing 3 and cast-in-place lower floor ladder beam 5 cast-in-place being integral; And on cast-in-place upper strata the upper corner of ladder beam 4 and cast-in-place lower floor ladder beam 5 is reserved " L " type and is taken mouth; In advance terraced beam built-in fitting 9 is imbedded the position corresponding with bench built-in fitting 6 before building; In the present embodiment, mouthful size of taking of cast-in-place upper strata ladder beam 4 can be wide 120mm * dark 190mm, the taking mouth and can be of a size of wide 120mm * dark 100mm of cast-in-place lower floor ladder beam 5.
Step 4: after treating that cast-in-situ concrete reaches predetermined strength; With the hoisting ring that processes install to the lifting bolt 8 in and tighten; Guarantee that bolt anchors into the degree of depth and is not less than 120mm; Horizontal plane upper berth leveling layer 10 in two take mouthful, then with prefabricated bench 1 hoisted in position, taking on the mouth of upper and lower layer of terraced beam put at the two ends of prefabricated bench 1 respectively; Can use the levelling of C20 pea gravel concreten in the present embodiment, thickness is 20mm.
Step 5: installation in position is through after comprehensive measurement and meeting design requirement; Use angle steel to use the full weld double welding to be welded as a whole bench built-in fitting 6 and terraced beam built-in fitting 9; Weld if the built-in fitting outside has unnecessary concrete surface layer will reject unnecessary concrete top layer earlier, angle steel can be used L80 * 6-120 in the present embodiment again.
Step 6: prefabricated bench 1 is being taken vertical slit place's perfusion tack coat 11 of mouth with the platform beam slab; Can use the flexible grouting material of the high-strength nothing of C35CGM to irritate real as tack coat; Prefabricated bench and platform beam slab are connected into overall structure; Wherein prefabricated bench 1 be connected with the upper platform beam slab accomplish after, the discrepancy in elevation on itself and ground is used the light aggregate levelling.
The bench built-in fitting 6 in the said step 1 and the pre-buried mode of the terraced beam built-in fitting 9 in the step 3 are dowel perforation plug welding, and said perforation plug welding is anchor slab boring, and dowel will pass this hole and carry out full weld.Said dowel is that dowel is 4C10, and length is not less than 300mm.
The above, just one of embodiment of the invention is not to be the restriction of invention being done other form, and any professional and technical personnel of being familiar with possibly utilize above-mentioned technology contents to change or be modified as the equivalent embodiment of equivalent variations.But every the present invention program's content that do not break away to any simple modification, equivalent variations and remodeling that above embodiment did, still belongs to the protection domain of technical scheme of the present invention according to technical spirit of the present invention.
Claims (10)
1. ready-package concrete staircase; Comprise prefabricated bench (1); Cast-in-place upper strata landing (2); Cast-in-place lower floor landing (3); Cast-in-place upper strata ladder beam (4) and cast-in-place lower floor ladder beam (5); It is characterized in that: be embedded with at least two bench built-in fittings (6) respectively on the vertical surface of said prefabricated bench (1) and cast-in-place upper strata landing (2) and cast-in-place lower floor landing (3) link; Said bench built-in fitting (6) is embedded in the two ends facade of prefabricated bench (1); Said prefabricated bench (1) is embedded with lifting part (8)
Cast-in-place upper strata landing (2) and cast-in-place being integral of cast-in-place upper strata ladder beam (4); Cast-in-place lower floor landing (3) and cast-in-place being integral of cast-in-place lower floor's ladder beam (5); The upper corner of cast-in-place upper strata ladder beam (4) and cast-in-place lower floor ladder beam (5) all is reserved with " L " type of the prefabricated bench of overlap joint (1) and takes mouth; Said taking on mouthful interior horizontal plane is covered with leveling layer (10); Be perfused with tack coat (11) between facade of taking mouthful and the prefabricated bench (1); Upper table surface near taking mouth is embedded with at least two terraced beam built-in fittings (9), and said terraced beam built-in fitting (9) is corresponding one by one with the position of bench built-in fitting (6), and is fixing with angle steel (12) welding between said bench built-in fitting (6) and the terraced beam built-in fitting (9).
2. ready-package concrete staircase as claimed in claim 1 is characterized in that, said lifting part (8) is that symmetry is pre-buried in two couples lifting bolt on prefabricated bench (1) both sides, stage casing, on the lifting bolt hoisting ring is arranged.
3. ready-package concrete staircase as claimed in claim 1 is characterized in that, is reserved with stair railing hole (7) on the said prefabricated bench (1).
4. ready-package concrete staircase as claimed in claim 1 is characterized in that, the center of the center of said bench built-in fitting (6) and terraced beam built-in fitting (9) all is not less than 200mm from prefabricated bench (1) rear and front end.
5. ready-package concrete staircase as claimed in claim 1 is characterized in that, said bench built-in fitting (6) and terraced beam built-in fitting (9) all are to be welded by opposed steel plate in two block gaps and the dowel (14) that is connected between two steel plates.
6. ready-package concrete staircase as claimed in claim 1 is characterized in that, said leveling layer (10) is pea gravel concreten or mortar.
7. ready-package concrete staircase as claimed in claim 1 is characterized in that, said tack coat (11) is flexible grouting material of high-strength nothing or polymer mortar slurry.
8. mounting method like the described ready-package concrete staircase of claim 1-7, it is characterized in that: step is following:
Step 1: prefabricated bench (1) is carried out prefabricated processing by the drawing design size; With imbed at least two bench built-in fittings (6) on the vertical surface of terraced beam link; In prefabricated bench (1), reserving stair railing hole (7), pre-buried lifting part (8) in prefabricated bench (1) simultaneously;
Step 2, with prefabricated bench (1) handling to the job site;
Step 3: existing at the construction field (site) with cast-in-place upper strata landing (2) and cast-in-place being integral of cast-in-place upper strata ladder beam (4); With cast-in-place lower floor landing (3) and cast-in-place being integral of cast-in-place lower floor's ladder beam (5); And reserve " L " type at the upper corner of cast-in-place upper strata ladder beam (4) and cast-in-place lower floor ladder beam (5) and take mouth, in advance terraced beam built-in fitting (9) is imbedded and the corresponding position of bench built-in fitting (6) before building;
Step 4: after treating that cast-in-situ concrete reaches predetermined strength, the horizontal plane upper berth leveling layer (10) in two take mouthful, then with prefabricated bench (1) hoisted in position, taking on the mouth of upper and lower layer of terraced beam put at the two ends of prefabricated bench (1) respectively;
Step 5: installation in position is through after comprehensive measurement and meeting design requirement; Use angle steel to use the full weld double welding to be welded as a whole bench built-in fitting (6) and terraced beam built-in fitting (9), weld again if the built-in fitting outside has unnecessary concrete surface layer will reject unnecessary concrete top layer earlier;
Step 6: prefabricated bench (1) is being taken vertical slit place's perfusion tack coat (11) of mouth with the platform beam slab.
9. the mounting method of precast concrete stair as claimed in claim 8 is characterized in that: the bench built-in fitting (6) in the said step 1 and the pre-buried mode of the terraced beam built-in fitting (9) in the step 3 are dowel perforation plug welding.
10. the mounting method of precast concrete stair as claimed in claim 9, it is characterized in that: the length of said dowel is for being not less than 300mm.
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| CN2012101639460A CN102661017A (en) | 2012-05-24 | 2012-05-24 | Quick-mounting type concrete stair and mounting method thereof |
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| CN103132660A (en) * | 2013-03-11 | 2013-06-05 | 新疆七星建设科技股份有限公司 | Concrete precast stairway fixed end 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 |
| CN104727469A (en) * | 2015-02-16 | 2015-06-24 | 中国建筑股份有限公司 | Staircase prefabricated reinforced concrete fireproof bulkhead structure and construction method thereof |
| CN106284878A (en) * | 2016-08-05 | 2017-01-04 | 成都市第四建筑工程公司 | Assembled stair waist slab and cast-in-place structural plate built-in pipe box connection construction method |
| CN107119865A (en) * | 2017-05-26 | 2017-09-01 | 江苏中城工业化住宅制造有限公司 | A kind of assembled steel skeleton lightweight concrete composition stair |
| CN108867850A (en) * | 2018-06-27 | 2018-11-23 | 华恒建设集团有限公司 | A kind of prefabricated building and its construction method |
| CN109614749A (en) * | 2018-12-28 | 2019-04-12 | 中民筑友科技投资有限公司 | Stair built-in fitting automatic generation method and device based on assembled architecture |
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| CN113026959A (en) * | 2019-12-24 | 2021-06-25 | 成都建工第二建筑工程有限公司 | Installation method of prefabricated staircase |
| CN113152808A (en) * | 2020-12-30 | 2021-07-23 | 浙江三一筑工科技有限公司 | Ready-package prefabricated staircase |
| CN113152810A (en) * | 2021-05-10 | 2021-07-23 | 江苏科技大学 | Light steel building bearing type superposed stair and construction method |
| CN113404322A (en) * | 2021-06-15 | 2021-09-17 | 中国电建集团贵阳勘测设计研究院有限公司 | Method for transforming steel ladder into concrete ladder in high-rise concrete structure |
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| CN103132660A (en) * | 2013-03-11 | 2013-06-05 | 新疆七星建设科技股份有限公司 | Concrete precast stairway fixed end 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 |
| CN104727469A (en) * | 2015-02-16 | 2015-06-24 | 中国建筑股份有限公司 | Staircase prefabricated reinforced concrete fireproof bulkhead structure and construction method thereof |
| CN104727469B (en) * | 2015-02-16 | 2017-01-04 | 中国建筑股份有限公司 | A kind of staircase prefabricated reinforced concrete fire barrier structure and construction thereof |
| CN106284878A (en) * | 2016-08-05 | 2017-01-04 | 成都市第四建筑工程公司 | Assembled stair waist slab and cast-in-place structural plate built-in pipe box connection construction method |
| CN107119865A (en) * | 2017-05-26 | 2017-09-01 | 江苏中城工业化住宅制造有限公司 | A kind of assembled steel skeleton lightweight concrete composition stair |
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| CN108867850A (en) * | 2018-06-27 | 2018-11-23 | 华恒建设集团有限公司 | A kind of prefabricated building and its construction method |
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| CN109614749A (en) * | 2018-12-28 | 2019-04-12 | 中民筑友科技投资有限公司 | Stair built-in fitting automatic generation method and device based on assembled architecture |
| CN109895239A (en) * | 2019-04-10 | 2019-06-18 | 孟凡林 | A kind of assembly concrete stair delay platform beam slab and its method of construction |
| CN113026959B (en) * | 2019-12-24 | 2022-11-04 | 成都建工第二建筑工程有限公司 | Installation method of prefabricated staircase |
| CN113026959A (en) * | 2019-12-24 | 2021-06-25 | 成都建工第二建筑工程有限公司 | Installation method of prefabricated staircase |
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Application publication date: 20120912 |