CN109667376B - Novel superposed floor system suitable for H-shaped steel beam of steel structure and construction method thereof - Google Patents

Novel superposed floor system suitable for H-shaped steel beam of steel structure and construction method thereof Download PDF

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Publication number
CN109667376B
CN109667376B CN201910083808.3A CN201910083808A CN109667376B CN 109667376 B CN109667376 B CN 109667376B CN 201910083808 A CN201910083808 A CN 201910083808A CN 109667376 B CN109667376 B CN 109667376B
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transverse
prestress
plate
concrete
rib plates
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CN109667376A (en
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杨新磊
张勃
王宇
王海良
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Tianjin Chengjian University
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Tianjin Chengjian University
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/16Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/32Floor structures wholly cast in situ with or without form units or reinforcements
    • E04B5/36Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor
    • E04B5/38Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor with slab-shaped form units acting simultaneously as reinforcement; Form slabs with reinforcements extending laterally outside the element

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Rod-Shaped Construction Members (AREA)

Abstract

The invention relates to a novel superposed floor system suitable for H-shaped steel beams of a steel structure and a construction method thereof, wherein the superposed floor system is formed by superposing H-shaped steel beams, prestress plates, transverse and longitudinal reinforcement steel bars and concrete; the prestress plate consists of a prestress plate body, transverse rib plates with two ends arranged along the width direction of the plate and longitudinal rib plates with two sides arranged along the length direction of the plate; the transverse rib plates at the two ends are arranged in a symmetrical outward inclined manner, are respectively inserted into the inner side space between the upper flange and the lower flange of the H-shaped steel beam at the corresponding end in an inclined manner, and the lower end face is attached and fixed with the inner surface of the lower flange; the longitudinal rib plates on two sides are prefabricated with penetrating holes, transverse steel bars are penetrated in the penetrating holes, the longitudinal steel bars are laid between the longitudinal rib plates on two sides, a concrete pouring groove is formed between the longitudinal rib plates on two sides, concrete is poured and filled in the concrete pouring groove, the diameter of the penetrating holes is larger than that of the transverse steel bars, and concrete is filled in a fit gap between the penetrating holes and the transverse steel bars. The laminated floor system is convenient for construction and can effectively control the prestress anti-arch.

Description

Novel superposed floor system suitable for H-shaped steel beam of steel structure and construction method thereof
Technical Field
The invention relates to the field of assembled building structures, in particular to a building structure floor system and a construction method thereof, and particularly relates to a novel superposed floor system and a construction method thereof, which are suitable for H-shaped steel beams of steel structures.
Background
Fabricated building is a major trend in today's society. The method has the advantages that the discharge of building sewage, harmful gas and dust and the pollution of building noise are effectively reduced in the assembly type building construction process, various adverse effects of building construction on surrounding environment are reduced, the improvement of the labor productivity of the building is facilitated, the design is promoted, the refinement of the building is promoted, the overall quality of the building is promoted, the energy conservation and drainage reduction rate is improved, the healthy sustainable development of the building industry in China is promoted, and the requirements of national economic development are met.
The laminated floor is a component type commonly used in assembled buildings, the laminated floor has good integrity, the upper surface and the lower surface of the plate are smooth, the decoration of the facing layer is facilitated, and the laminated floor is suitable for high-rise buildings and large-bay buildings with high overall rigidity requirements. The prestressed plate part of the laminated floor is not only one of the components of the floor structure, but also a permanent template of the cast-in-situ reinforced concrete laminated layer. The prestressed plate has the functions of bottom mold, floor reinforcing bar and leveling bottom, and has the advantages of saving steel mold, reducing site reinforcing bar operation, no plastering on ceiling, etc. In addition, the steel wire protection layer of the prestress plate part is thicker, so that the fireproof requirement can be better met.
At present, two types of prestress plates are commonly used for laminated floors: a prefabricated laminated slab for steel bar truss features that its prestressed slab has high rigidity under short working condition, high shearing resistance, and no damage to equipment and pipeline. The other is PK prestressed ribbed plate, which has good integrity, crack resistance and shock resistance, is simple to construct, short in construction period, energy-saving and environment-friendly, is convenient for industrialization, overcomes many problems of the existing floor, but the inverted arch value cannot be effectively controlled, so that the flatness of the lower surface of the floor is insufficient and cracks are easy to generate, and the next construction and use are affected.
By searching in the prior art, the technical scheme similar to the patent is not searched.
Disclosure of Invention
One of the purposes of the invention is to overcome the defects of the prior art, and provide a novel superposed floor applicable to H-shaped steel beams with steel structures, which is convenient for construction, can effectively control prestress reverse arches and achieves better flatness; and the device pipeline layout can be conveniently carried out inside, and the thickness of the protective layer of the device pipeline can be effectively increased.
The above object of the present invention is achieved by the following technical solutions:
Novel coincide superstructure suitable for steel construction H shaped steel roof beam, its characterized in that: the novel superposed floor system is formed by superposing H-shaped steel beams, prestress plates supported between the H-shaped steel beams, transverse steel bars and longitudinal steel bars paved on the prestress plates, and concrete poured on the prestress plates;
The prestress plate consists of a prestress plate body, transverse rib plates integrally cast at two ends of the lower part of the prestress plate body along the width direction of the plate and longitudinal rib plates integrally cast at two sides of the upper part of the prestress plate body along the length direction of the plate; the transverse rib plates at the two ends are arranged in a symmetrical outward inclined manner, are respectively inserted into the inner side space between the upper flange and the lower flange of the H-shaped steel beam at the corresponding ends in an inclined manner, and the lower end surfaces of the transverse rib plates are attached and fixed with the inner surfaces of the lower flanges; the longitudinal rib plates on the two sides are prefabricated with penetrating holes which can be used for penetrating and installing the reinforcing steel bars and arranging pipelines, and the penetrating holes are arranged in a one-to-one opposite way; the transverse reinforcing steel bars are arranged in the through holes in a penetrating mode, the longitudinal reinforcing steel bars are paved between the longitudinal rib plates on two sides, a concrete pouring groove is formed between the longitudinal rib plates on two sides, concrete is poured and filled in the concrete pouring groove, the diameter of the through holes is larger than that of the transverse reinforcing steel bars, and concrete is filled in fit gaps between the through holes and the transverse reinforcing steel bars.
And the longitudinal rib plate adopts a trapezoid rib plate structure with the outer side surface being a straight surface.
The second purpose of the invention is to overcome the defects of the prior art and provide a novel construction method of the laminated floor system suitable for the H-shaped steel beam with the steel structure.
The above object of the present invention is achieved by the following technical solutions:
the construction method is characterized by aiming at the construction of the novel superposed floor applicable to the steel structure H-shaped steel beam, and comprises the following construction steps:
s1, prefabricating a prestress plate in a factory;
S2, arranging an H-shaped steel beam for placing a prestress plate on a construction site, and ensuring that the surface of the lower flange of the H-shaped steel beam is clean and free of sundries;
s3, hoisting the prestress plates to a preset position of a construction site, respectively inserting transverse rib plates at two ends of the prestress plates into H-shaped steel beams at corresponding positions at two ends, enabling the lower ends of the transverse rib plates to be attached to the upper surface of a lower flange of the H-shaped steel beam, and after the prestress plates are installed and spliced, keeping smooth connection, no gap and good plate-to-plate contact;
S4, inserting transverse steel bars into the penetrating holes in the longitudinal rib plates, wherein a part of the penetrating holes can be used as wiring holes under the condition that pipelines need to be laid in the transverse direction; arranging longitudinal steel bars between the longitudinal rib plates, fixing the longitudinal steel bars, and arranging equipment pipelines in the space between the longitudinal steel bars under the condition that the pipelines are required to be arranged longitudinally;
S5, after the transverse and longitudinal steel bars are laid and the equipment pipelines are laid, casting concrete in the concrete casting grooves between the longitudinal rib plates at the two sides of the prestress plate, wherein the concrete is required to fill gaps between the transverse steel bars and the penetrating holes in the casting process, so that the concrete in the penetrating holes and the longitudinal rib plates form a bolt effect;
And S6, curing the superposed floor after concrete pouring to form an assembled integral floor structure.
The invention has the advantages and positive effects that:
1. Compared with the existing laminated floor, the laminated floor has the advantages that part of penetrating holes in the prestressed plates can be used for directly laying pipelines or reserving pipelines as the follow-up penetrating pipelines in the construction process of the laminated floor, and enough pipeline laying space is also provided between longitudinal rib plates on two sides of the prestressed plates, so that the problem of inconvenience in laying equipment pipelines is solved, and enough thickness of a protective layer is provided for the pipelines through the concrete pouring layer and the prestressed plate body.
2. The prestress plate of the laminated floor system is provided with the longitudinal rib plates and the transverse rib plates, so that the integral performance is good, the floor slab is not required to be temporarily supported in the construction process, and the convenience of construction is effectively improved.
3. Compared with the existing prefabricated laminated floor, the longitudinal rib plates and the transverse rib plates arranged on the prestress plates effectively control the prestress inverted arch value of the laminated floor, so that the laminated floor achieves better flatness.
4. Compared with the existing laminated floor, the longitudinal rib plates on the prestress plates are reserved with the penetrating holes with the aperture larger than that of the transverse reinforcing steel bars, so that after the transverse reinforcing steel bars are penetrated, the gaps between the longitudinal rib plates and the transverse reinforcing steel bars can still be effectively filled with concrete, the positions of the reinforcing steel bars are guaranteed, the pin effect is formed, and the integrity of the laminated floor is enhanced.
5. Compared with the existing prefabricated floor, the laminated floor has the advantages that the longitudinal rib plates and the transverse rib plates are arranged on the prestressed plates, so that the prestressed plates are prevented from being damaged to a great extent in the transportation process, the integral strength of the prestressed plates is enhanced, and the performance of the prestressed plates is fully exerted in the use process.
6. The construction method of the novel superposed floor system adopts the steps of assembly and pouring, combines the construction advantages of the traditional prefabricated building system and the cast-in-situ integral building system, does not need to set a floor slab temporary support in the construction process, and has the characteristics of fast construction progress, template saving, cost reduction and the like; meanwhile, the dead weight of the floor system is reduced, the cracking resistance of the floor system is increased, and favorable conditions are created for adopting high-strength concrete.
Drawings
FIG. 1 is a schematic view of an H-beam structure;
FIG. 2 is a schematic diagram of a prestress plate structure;
FIG. 3 is a schematic view showing a structure in which a prefabricated slab is placed on an H-shaped steel girder;
fig. 4 is a schematic structural view of a transverse and longitudinal reinforcement laid on a prestressed slab;
fig. 5 is a schematic view of the poured concrete after the reinforcement is laid (only a partial concrete is shown in the drawing).
Detailed Description
The invention will now be described in further detail by way of specific examples, which are given by way of illustration only and not by way of limitation, with reference to the accompanying drawings.
Referring to fig. 1-5, the invention is a novel laminated floor system suitable for steel structure H-shaped steel beams, which comprises:
The novel superposed floor system is formed by superposing an H-shaped steel beam 1, prestressed plates 2 supported between the H-shaped steel beams, transverse steel bars 3 and longitudinal steel bars 4 paved on the prestressed plates and concrete 5 poured on the prestressed plates.
The prestress plate is composed of a prestress plate body 2-1, transverse rib plates 2-2 which are integrally cast at two ends of the lower part of the prestress plate body and are arranged along the width direction of the plate, and longitudinal rib plates 2-3 which are integrally cast at two sides of the upper part of the prestress plate body and are arranged along the length direction of the plate. The transverse rib plates at the two ends are arranged in a symmetrical outward inclined mode, the transverse rib plates at the two ends are respectively inserted into the inner side space between the upper flange 1-1 and the lower flange 1-2 of the H-shaped steel beam at the corresponding ends in an inclined mode, the lower end faces of the transverse rib plates are attached to the inner surfaces of the lower flanges, and the transverse rib plates can be fixed in various modes, such as bolting, bonding and the like. The longitudinal rib plates on two sides are prefabricated with penetrating holes which can be used for penetrating and installing the reinforcing steel bars and arranging the pipelines, the penetrating holes are arranged in a one-to-one opposite mode and are mainly used for penetrating and installing the reinforcing steel bars, and part of the penetrating holes can be used for arranging the pipelines of the equipment. The transverse reinforcing steel bars are arranged in the through holes in a penetrating mode, the longitudinal reinforcing steel bars are paved between the longitudinal rib plates on two sides, concrete pouring grooves 2-4 are formed between the longitudinal rib plates on two sides, concrete is poured and filled in the concrete pouring grooves, the diameter of the through holes is larger than that of the transverse reinforcing steel bars, and concrete is filled in fit gaps between the through holes and the transverse reinforcing steel bars.
The longitudinal rib plate adopts a trapezoid rib plate structure with the outer side surface being a straight surface, so that on one hand, the connection strength of the longitudinal rib plate and the prestress plate body is ensured, and on the other hand, two prestress plates spliced adjacently form surface-to-surface contact at the longitudinal rib plate part along the transverse direction.
This novel coincide superstructure has the following characteristics except having above-mentioned characteristics:
The plane size is flexible, the requirements of building opening, depth changeability, hole opening and the like can be met, the building function is good, and the total height of the superposed cover is smaller than that of the hollow floor slab, so that the total height of a high-rise building can be reduced, and the space utilization rate is improved.
Referring to fig. 1-5, the construction method is performed on the novel laminated floor applicable to the steel structure H-shaped steel beam, and the construction steps are as follows:
S1, prefabricating a prestressed plate in a factory, wherein the aperture of a penetrating hole prefabricated on a longitudinal rib is slightly larger than the diameter of a transverse steel bar paved later, so that when concrete is poured later, the concrete can fill the gap between the penetrating hole and the transverse steel bar, and the construction requirements such as pipeline layout and the like are met.
S2, arranging an H-shaped steel beam for placing the prestress plate on a construction site, and ensuring that the surface of the lower flange of the H-shaped steel beam is clean and free of sundries so as to ensure that the H-shaped steel beam can be tightly combined with a transverse rib plate obliquely downwards.
S3, hoisting the prestress plates to a preset position of a construction site, respectively inserting transverse rib plates at two ends of the prestress plates into H-shaped steel beams at corresponding positions at two ends, enabling the lower ends of the transverse rib plates to be attached to the upper surface of the lower flange of the H-shaped steel beam, and after the prestress plates are installed and spliced, keeping smooth connection, tightness and no gap, and enabling the plates to be in good contact.
S4, inserting transverse steel bars into the penetrating holes in the longitudinal rib plates, wherein a part of the penetrating holes can be used as wiring holes under the condition that pipelines need to be laid in the transverse direction; and the longitudinal steel bars are arranged between the longitudinal rib plates and fixed, and the equipment pipelines are arranged in the space between the longitudinal steel bars under the condition that the pipelines are required to be arranged longitudinally. Pipelines include electrical pipelines, water pipelines, and the like.
S5, after the transverse and longitudinal steel bars are laid and the equipment pipelines are laid, pouring concrete in the concrete pouring grooves between the longitudinal rib plates on two sides of the prestressed plate, wherein the concrete is filled in gaps between the transverse steel bars and the penetrating holes in the pouring process, so that the concrete in the penetrating holes and the longitudinal rib plates form a pin effect, the integrity of the building cover after superposition can be enhanced, the surface of the building cover after pouring is smooth, the building cover is free from holes or dents, and the next-stage construction is not influenced.
And S6, curing the superposed floor after concrete pouring to form an assembled integral floor structure.
The construction method is a construction method of assembling and pouring firstly, and because the prestressed plate has enough supporting strength, the temporary support of the floor slab is not required to be arranged when pouring later, and the pouring is directly carried out in the concrete groove on the prestressed plate, so that the auxiliary labor hour for installing and detaching the temporary support during construction can be greatly saved, the construction template is saved, the construction progress is quickened, and the aim of reducing the construction cost is achieved.
Although the embodiments of the present invention and the accompanying drawings have been disclosed for illustrative purposes, those skilled in the art will appreciate that: various substitutions, changes and modifications are possible without departing from the spirit and scope of the invention and the appended claims, and therefore the scope of the invention is not limited to the embodiments and the disclosure of the drawings.

Claims (2)

1. The utility model provides a construction method suitable for coincide superstructure of steel construction H shaped steel roof beam which characterized in that: the superposed floor system is formed by superposing H-shaped steel beams, prestress plates supported between the H-shaped steel beams, transverse steel bars and longitudinal steel bars paved on the prestress plates and concrete poured on the prestress plates;
The prestress plate is formed by integrally pouring transverse ribs arranged at two ends of the lower part of the prestress plate body along the width direction of the plate
The plate and longitudinal rib plates integrally cast on two sides of the upper part of the prestress plate body are arranged along the length direction of the plate; the transverse rib plates at two ends are in a pair
The transverse rib plates at the two ends are respectively and obliquely inserted into the inner side space between the upper flange and the lower flange of the H-shaped steel beam at the corresponding end,
The lower end surface of the transverse rib plate is adhered and fixed with the inner surface of the lower flange; the longitudinal rib plates on two sides are prefabricated with steel bars for penetrating and installing
The penetrating holes are arranged in a one-to-one opposite manner; the transverse steel bars are arranged in the through holes in a penetrating way, and the longitudinal steel bars are arranged in the through holes in a penetrating way
The ribs are paved between the longitudinal rib plates at two sides, a concrete pouring groove is formed between the longitudinal rib plates at two sides, and the concrete is poured and filled
In the concrete pouring groove, the aperture of the penetrating hole is larger than the diameter of the transverse steel bar, and the matching clearance between the penetrating hole and the transverse steel bar
The interior of the concrete pipe is filled with concrete,
The construction steps are as follows:
S1, prefabricating a prestress plate in a factory;
S2, arranging an H-shaped steel beam for placing a prestress plate on a construction site, and ensuring that the surface of the lower flange of the H-shaped steel beam is clean and free of sundries;
s3, hoisting the prestress plate to a preset position of a construction site, and respectively inserting transverse rib plates at two ends of the prestress plate into corresponding two ends
In the H-shaped steel beam, the lower end of the transverse rib plate is attached to the upper surface of the lower flange of the H-shaped steel beam, and a plurality of prestress plates are installed and spliced
The rear part is kept flat, connected tightly and has no gap, and the contact between the plates is good;
S4, inserting transverse reinforcing steel bars into penetrating holes in the longitudinal rib plates, and under the condition that pipelines are required to be distributed in the transverse direction, a part of the transverse reinforcing steel bars are inserted
The penetrating holes can be used as wiring holes; longitudinal reinforcing steel bars are arranged between the longitudinal rib plates and fixed, and pipelines are required to be arranged in the longitudinal direction
In this case, the equipment lines are arranged in the spaces between the longitudinal bars;
S5, after the transverse and longitudinal steel bars are laid and the equipment pipelines are laid, the concrete is carried out between the longitudinal rib plates at the two sides of the prestress plate
Pouring concrete in the pouring groove, wherein the concrete should be filled in gaps between the transverse steel bars and the penetrating holes in the pouring process, so that
The concrete in the penetrating holes and the longitudinal rib plates form a pin effect;
And S6, curing the superposed floor after concrete pouring to form an assembled integral floor structure.
2. The construction method for the laminated floor system applicable to the H-shaped steel beam with the steel structure according to claim 1, wherein the construction method comprises the following steps: the longitudinal rib plate adopts a trapezoid rib plate structure with the outer side surface being a straight surface.
CN201910083808.3A 2019-01-29 2019-01-29 Novel superposed floor system suitable for H-shaped steel beam of steel structure and construction method thereof Active CN109667376B (en)

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Publication number Priority date Publication date Assignee Title
CN111197371B (en) * 2020-01-10 2021-11-05 山东富海材料科技有限公司 Prefabricated coincide floor of prestressing force sheet metal assembled
CN112554403A (en) * 2020-10-26 2021-03-26 江苏纬信工程咨询有限公司 FRP concrete I-shaped combined member and implementation method thereof
CN113027026A (en) * 2021-04-02 2021-06-25 青岛腾远设计事务所有限公司 Inverted U-shaped prestress laminated floor slab and installation method thereof

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