CN113152810A - Light steel building bearing type superposed stair and construction method - Google Patents
Light steel building bearing type superposed stair and construction method Download PDFInfo
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- CN113152810A CN113152810A CN202110507460.3A CN202110507460A CN113152810A CN 113152810 A CN113152810 A CN 113152810A CN 202110507460 A CN202110507460 A CN 202110507460A CN 113152810 A CN113152810 A CN 113152810A
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- steel
- bench
- light steel
- stair
- platform beam
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
- E04F11/02—Stairways; Layouts thereof
Abstract
The invention discloses a light steel stair-type superposed stair and a construction method thereof. The construction method comprises the steps of hoisting the light steel composite floor bearing plate on site during construction, placing the light steel composite floor bearing plate between the platform beam at the upper part of the bench section and the platform beam at the lower part of the bench section, fixing the light steel composite floor bearing plate through the upper fixing mechanism and the lower fixing mechanism, installing the tool type side mold and the step tread formwork, pouring concrete, and maintaining and removing the side mold and the step tread formwork. The light steel building bearing type composite slab, the bench upper platform beam, the bench lower platform beam and the cast-in-place concrete are physically laminated into a whole to form the integrally stressed light steel concrete combined stair.
Description
Technical Field
The invention relates to the field of civil construction, in particular to a light steel building bearing type superposed stair and a construction method.
Background
At present, with the rapid development of economy in China, the novel urbanization construction level is higher and higher, the prefabricated building enters a rapid development period, and various prefabricated building structures rapidly appear, such as prefabricated concrete structures, prefabricated light steel structures, non-dismantling formwork structural systems and the like. However, various systems have many problems in practical application, such as the problems of the standard design degree and the prefabrication rate of the fabricated concrete structure in the application process, generally low construction cost and the like.
In the assembly type building, attention is not paid to the design of the stairs, the stair type is single, innovation is lacked, but the local structure is random, and the standardized design cannot be realized. The traditional prefabricated reinforced concrete stair mold is complex, the mold is modified due to non-standard design, the prefabrication process is complex, and the production cost is greatly increased; the prefabricated staircase is heavy and has high transportation, construction and installation difficulty.
Application number CN109025103A discloses a light steel grid concrete coincide stair specifically includes cement fiberboard stair die block, cement fiberboard stair side mould and light steel grid stair swash plate skeleton, and light steel grid stair swash plate skeleton texture is complicated, and the volume is great, is unfavorable for transportation and site operation.
Disclosure of Invention
In order to solve the problems, the invention provides a light steel building-supported type overlapped stair which is convenient to transport and construct.
In order to achieve the purpose, the invention is realized by the following technical scheme:
the invention relates to a light steel building-bearing type superposed stair which comprises a light steel building-bearing type superposed slab, a bench upper platform beam and a bench lower platform beam, wherein the light steel building-bearing type superposed slab is arranged between the bench upper platform beam and the bench lower platform beam, a concrete superposed part is poured on the upper surface of the light steel building-bearing type superposed slab, an upper fixing mechanism is arranged between the upper end of the light steel building-bearing type superposed slab and the bench upper platform beam, a lower fixing mechanism for fixing the lower end of the light steel building-bearing type superposed slab is arranged on the bench lower platform beam, the light steel building-bearing type superposed slab comprises a plurality of groups of C-shaped steel, profiled steel plates and flat steel, the C-shaped steel is distributed on the upper surface of the light steel building-bearing type superposed slab along the length direction of the profiled steel plates, and two ends of the flat steel are riveted on the side surfaces of two adjacent groups of the C-shaped steel.
The invention is further improved in that: go up fixed establishment including setting up two dowel bars on the inclined plane of bench upper portion platform roof beam and be provided with profiled sheet upper end and two preformed holes of two dowel bar cooperations.
The invention is further improved in that: the lower fixing mechanism comprises two angle steels which are arranged on the inclined plane of the platform beam at the lower part of the ladder section and used for supporting the lower end of the profiled steel sheet, anchor bars are arranged on the surfaces of the angle steels, which are attached to the inclined plane of the platform beam at the lower part of the ladder section, and the anchor bars stretch into the platform beam at the lower part of the ladder section.
The invention is further improved in that: the distance between the two angle steels is twice as long as the distance between each angle steel and the side surface of the platform beam at the lower part of the ladder section close to the angle steel.
The invention is further improved in that: each group of C-shaped steel comprises two C-shaped steel which are tightly attached to each other and have the same length as the profiled steel sheet, the side faces, attached to each other, of the two C-shaped steel in each group are connected through rivets, and each C-shaped steel is riveted with the edge of the profiled steel sheet.
The invention relates to a construction method of a light steel building-type superposed stair, which comprises the following steps:
first step, preparation: manufacturing a light steel building-bearing laminated slab in a factory, reserving two reserved holes on one short side of a profiled steel sheet, connecting two C-shaped steels into a group by using rivets, connecting each group of C-shaped steels and the profiled steel sheet edge by using the rivets, connecting the C-shaped steels and the profiled steel sheet edge by using self-tapping screws in the middle, bending two ends of a flat steel into a groove shape at 90 degrees, abutting against the C-shaped steels, and connecting the flat steel and the C-shaped steels by using the rivets;
secondly, during site construction, two dowel bars are embedded in the inclined plane of the platform beam at the upper part of the ladder section, and two angle steels are embedded in the inclined plane of the platform beam at the lower part of the ladder section;
thirdly, hoisting the light steel laminated floor bearing plate on site: aligning and fixing a preformed hole of a light steel building type composite slab processed in a factory to two dowel bars on a platform beam at the upper part of the bench, and lapping the other end of the light steel building type composite slab on angle steel of the platform beam at the lower part of the bench;
step four, step four: arranging negative bending moment reinforcing steel bars on the platform beam according to design requirements, installing tool type side molds and step skirting templates, pouring concrete in the combined stair template, and curing after pouring is finished;
the fifth step: after the maintenance is finished, tool type side molds and step skirting templates are removed, and the light steel building bearing type laminated slab, the bench upper portion platform beam, the bench lower portion platform beam and the cast-in-place concrete are physically laminated into a whole to form the integrally stressed laminated stair.
The invention has the beneficial effects that: the light steel building bearing type composite slab adopts the C-shaped steel group riveted on the profiled steel sheet, and then the flat steel is bent, riveted and fixed between the C-shaped steel group, the installation is simple, the C-shaped steel group is adopted to replace a steel bar truss in a steel bar truss floor bearing plate, the troubles of processing, welding and binding of steel bars are avoided, and the flat steel is connected with the C-shaped steel through the rivet to serve as a transverse support, so that the structural stability is enhanced. The light steel building-bearing composite slab provided by the invention avoids a precast concrete process, has light weight, greatly reduces the hoisting weight of a precast stair on a construction site, reduces the difficulty of a construction and installation process, and has good integrity by combining profiled steel plates, C-shaped steel and concrete to replace reinforcing steel bars to finally form a light steel-concrete combined structure stair. The prefabricated concrete stair mould overcomes the production problems of complex prefabrication process and the like of the traditional prefabricated concrete stair mould and the construction problems of great self weight, transportation, hoisting and the like, can effectively reduce the cost, and has good practical value for popularization and application of the prefabricated concrete stair.
Drawings
FIG. 1 is a schematic diagram of the present invention.
Fig. 2 is a view showing an installation state of the light steel floor slab of the present invention.
FIG. 3 is a plan view of the light steel floor slab in an installed state.
Fig. 4 is a schematic diagram of a light steel floor-type laminated slab structure.
Fig. 5 is a schematic structural view of the upper deck beam of the bench.
Fig. 6 is a schematic structural view of a platform beam at the lower part of the bench.
Wherein: 1-light steel building bearing type laminated slab, 2-bench upper platform beam, 3-bench lower platform beam, 4-C-shaped steel, 5-profiled steel plate, 6-flat steel, 7-preformed hole, 8-rivet, 9-dowel bar and 10-angle steel.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. In the following description, numerous specific details are provided to provide a thorough understanding of embodiments of the invention. One skilled in the relevant art will recognize, however, that the invention may be practiced without one or more of the specific details, or with other methods, components, devices, steps, and so forth. In other instances, well-known methods, devices, implementations or operations have not been shown or described in detail to avoid obscuring aspects of the invention.
The present invention will be described in detail with reference to the accompanying drawings.
As shown in figures 1-6, the invention is a light steel building-type laminated stair, which comprises a light steel building-type laminated slab 1, a bench upper platform beam 2 and a bench lower platform beam 3, wherein the light steel building-type laminated slab 1 is arranged between the bench upper platform beam 2 and the bench lower platform beam 3, a concrete laminated part is poured on the upper surface of the light steel building-type laminated slab, an upper fixing mechanism is arranged between the upper end of the light steel building-type laminated slab and the bench upper platform beam 2, a lower fixing mechanism for fixing the lower end of the light steel building-type laminated slab is arranged on the bench lower platform beam 3, the light steel building-type laminated slab 1 comprises a plurality of groups of C-shaped steel 4, profiled steel plates 5 and flat steel 6, the C-shaped steel 4 is distributed on the upper surface along the length direction of the profiled steel plates 5, the notch of the C-shaped steel 4 is upward and vertical to the profiled steel plates 5, the two ends of the flat steel 6 are bent by 90 degrees to form a groove shape, is abutted against the C-shaped steel 4 and is connected by a rivet.
Go up fixed establishment including setting up two dowel bars 9 on the inclined plane of bench upper portion platform roof beam 2 and be provided with profiled sheet 5 upper end and two preformed holes 7 of two dowel bar 9 cooperations, two dowel bars 9 are located the central line position on 2 inclined planes of bench upper portion platform roof beam, and the distance between two dowel bars 9 is the twice of every dowel bar 9 to the distance of 2 tip of bench upper portion platform roof beams respectively, and sufficient length is stretched out outward to dowel bar 9. The lower fixing mechanism comprises two angle steels 10 which are arranged on the inclined plane of the bench lower platform beam 3 and used for supporting the lower end of the profiled steel sheet 5, anchor bars are arranged on the surfaces, attached to the inclined plane of the bench lower platform beam 3, of the angle steels 10, the anchor bars extend into the bench lower platform beam 3, and the distance between the two angle steels 10 is twice as long as the distance from each angle steel 10 to the end part of the respective adjacent bench lower platform beam 3.
Every group C shaped steel 4 all includes two close looks pastes, and length and profiled sheet 5C shaped steel 4 that length equals, and the face that two C shaped steel 4 were laminated mutually in every group is connected through array rivet 8, the distance equals between every group rivet 8, around two sets of rivets 8 and the close C shaped steel 4 tip distance of it equals, every C shaped steel 4 and profiled sheet 5's limit portion riveting, the middle part passes through self-tapping screwed connection with profiled sheet 5, firm in connection nature is high.
The invention relates to a construction method of a light steel building-type superposed stair, which comprises the following steps:
first step, preparation: manufacturing a light steel building bearing type laminated slab in a factory, reserving two reserved holes on one short side of a profiled steel plate 5, connecting two C-shaped steels 4 into a group by using rivets, connecting the edges of each group of C-shaped steels 4 and the profiled steel plate 5 by using the rivets, connecting the middle by using self-tapping screws, bending two ends of a flat steel 6 into a groove shape at 90 degrees, abutting against the C-shaped steels 4, and connecting by using the rivets;
secondly, during site construction, two dowel bars 9 are embedded in the inclined plane of the platform beam 2 at the upper part of the ladder section, two angle steels 10 are embedded in the inclined plane of the platform beam 3 at the lower part of the ladder section, construction is carried out according to a set distance when the dowel bars 9 and the angle steels 10 are embedded, and the distance between the two dowel bars 9 or the two angle steels 10 is required to be two times of the distance between each dowel bar 9 or each angle steel 10 and the side surface of the platform beam close to the dowel bar 9 or each angle steel 10;
thirdly, hoisting the light steel laminated floor bearing plate on site: aligning and fixing a preformed hole of a light steel building type composite slab processed in a factory to two dowel bars 9 on a platform beam 2 at the upper part of a bench, and lapping the other end of the light steel building type composite slab on an angle steel 10 of a platform beam 3 at the lower part of the bench;
step four, step four: arranging negative bending moment reinforcing steel bars on the platform beam according to design requirements, installing tool type side molds and step skirting templates, pouring concrete in the combined stair template from top to bottom, and curing after pouring is finished;
the fifth step: after the maintenance is finished, tool type side molds and step skirting templates are removed, and the light steel building bearing type laminated slab, the bench upper portion platform beam 2, the bench lower portion platform beam 3 and the cast-in-place concrete entity are overlapped into a whole to form the integrally stressed laminated stair.
The light steel building bearing type composite slab 1, the bench upper platform beam 2, the bench lower platform beam 3 and the cast-in-place concrete are physically laminated into a whole to form the integrally stressed light steel concrete combined stair. In the construction stage, the light steel floor-bearing type laminated slab 1 has light self weight, so that the hoisting weight of the prefabricated staircase on the construction site is greatly reduced, and the construction process is more economic and safer; the light steel building type laminated slab 1 bears the dead weight of the precast slab, the weight of cast-in-place concrete and construction load, and the cost and time for installing a bottom template and a full scaffold are saved; c shaped steel has replaced the steel bar truss in the steel bar truss building carrier plate, has avoided the trouble of reinforcing bar processing, welding and ligature, and the preparation is simple and convenient.
The above disclosure is only one preferred embodiment of the present invention, and certainly should not be construed as limiting the scope of the invention, which is defined by the claims and their equivalents.
Claims (7)
1. The utility model provides a light steel building holds formula coincide stair, includes light steel building holds formula superimposed sheet (1), bench upper portion platform roof beam (2) and bench lower part platform roof beam (3), light steel building holds formula superimposed sheet (1) and sets up between bench upper portion platform roof beam (2) and bench lower part platform roof beam (3) concrete coincide portion, its characterized in that have been pour on light steel building holds formula superimposed sheet (1) upper surface: the light steel building bearing type composite slab is characterized in that an upper fixing mechanism is arranged between the upper end of the light steel building bearing type composite slab (1) and a platform beam (2) on the upper portion of a bench, a lower fixing mechanism for fixing the lower end of the light steel building bearing type composite slab (1) is arranged on a platform beam (3) on the lower portion of the bench, the light steel building bearing type composite slab (1) comprises a plurality of groups of C-shaped steel (4), profiled steel plates (5) and flat steel (6), the C-shaped steel (4) is distributed on the upper surface of the profiled steel (5) in the length direction, notches of the C-shaped steel (4) are upward and perpendicular to the profiled steel plates (5), and two ends of the flat steel (6) are riveted to the side faces of the adjacent two groups of C-shaped steel (4).
2. A lightweight steel stair-type laminated staircase according to claim 1, wherein: go up fixed establishment including setting up two dowel bars (9) on the inclined plane of bench upper portion platform roof beam (2) and be provided with profiled sheet (5) upper end and two dowel bar (9) complex two preformed holes (7).
3. A lightweight steel stair-type laminated staircase according to claim 2, wherein: the lower fixing mechanism comprises two angle steels (10) which are arranged on the inclined plane of the platform beam (3) at the lower part of the bench section and used for supporting the lower end of the profiled steel sheet (5), anchor bars are arranged on the surfaces, attached to the inclined plane of the platform beam (3) at the lower part of the bench section, of the angle steels (10), and the anchor bars stretch into the platform beam (3) at the lower part of the bench section.
4. A lightweight steel stair-type laminated staircase according to claim 3, wherein: the distance between the two angle steels (10) is twice as long as the distance between each angle steel (10) and the side face of the lower platform beam (3) of the ladder section close to the angle steel.
5. A lightweight steel stair-type laminated staircase according to claim 1, wherein: each group of C-shaped steel (4) comprises two C-shaped steel (4) which are tightly adhered to each other and have the same length as that of the profiled steel sheet (5), the side faces, attached to each other, of the C-shaped steel (4) are connected through rivets (8), and each C-shaped steel (4) is riveted with the edge of the profiled steel sheet (5).
6. A construction method of a light steel building bearing type overlapped stair is characterized in that: the method comprises the following steps:
first step, preparation: manufacturing a light steel building bearing type laminated slab in a factory, reserving two reserved holes on one short side of a profiled steel plate (5), connecting two C-shaped steels (4) by using rivets to form a group, connecting each group of C-shaped steel (4) and the profiled steel plate (5) by using the rivets, connecting the middle by using self-tapping screws, bending two ends of a flat steel (6) into a groove shape at 90 degrees, abutting against the C-shaped steel (4), and connecting by using the rivets;
secondly, during site construction, two dowel bars (9) are embedded in the inclined plane of the platform beam (2) at the upper part of the ladder section, and two angle steels (10) are embedded in the inclined plane of the platform beam (3) at the lower part of the ladder section;
thirdly, hoisting the light steel laminated floor bearing plate on site: aligning and fixing a preformed hole of a light steel building bearing type composite slab processed in a factory to two dowel bars (9) on a platform beam (2) at the upper part of a bench, and lapping the other end of the light steel building bearing type composite slab on an angle steel (10) of a platform beam (3) at the lower part of the bench;
step four, step four: arranging negative bending moment reinforcing steel bars on the platform beam according to design requirements, installing tool type side molds and step skirting templates, pouring concrete in the combined stair template, and curing after pouring is finished;
the fifth step: after the maintenance is finished, tool type side molds and step skirting templates are removed, and the light steel building bearing type laminated slab, the bench upper portion platform beam (2), the bench lower portion platform beam (3) and the cast-in-place concrete entity are laminated into a whole to form the integrally stressed laminated stair.
7. The construction method of the light steel building-type laminated stair according to claim 6, wherein the construction method comprises the following steps: in the second step, the distance between two embedded dowel bars (9) is twice the distance between each dowel bar (9) and the side face of the ladder section upper platform beam (2) close to the dowel bar, and the distance between two angle steels (10) is twice the distance between each angle steel (10) and the side face of the ladder section lower platform beam (3) close to the angle steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110507460.3A CN113152810A (en) | 2021-05-10 | 2021-05-10 | Light steel building bearing type superposed stair and construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110507460.3A CN113152810A (en) | 2021-05-10 | 2021-05-10 | Light steel building bearing type superposed stair and construction method |
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| CN110468955A (en) * | 2019-08-19 | 2019-11-19 | 山东建科信息技术有限公司 | A kind of prefabricated concrete structure shear wall connect steel node and construction method with superimposed sheet |
| CN212866536U (en) * | 2020-04-08 | 2021-04-02 | 菏泽城建工程发展集团有限公司 | Concrete wall department steel bar truss floor carrier plate side supporting device |
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| CN102864925A (en) * | 2012-09-29 | 2013-01-09 | 朱宏宇 | Stair mould base, stair and method for building stair mould base and stair |
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