CN210658877U - Distributed post-cast assembled integral prestressed concrete hollow slab rib beam floor - Google Patents
Distributed post-cast assembled integral prestressed concrete hollow slab rib beam floor Download PDFInfo
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- CN210658877U CN210658877U CN201921366133.5U CN201921366133U CN210658877U CN 210658877 U CN210658877 U CN 210658877U CN 201921366133 U CN201921366133 U CN 201921366133U CN 210658877 U CN210658877 U CN 210658877U
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Abstract
The utility model belongs to the technical field of building engineering, concretely relates to distributing type post-cast assembly integral prestressed concrete hollow slab girt floor, the floor system comprises ear picking beams, common precast beams and precast prestressed concrete hollow slabs, the precast prestressed concrete hollow slabs are interlocking type keyway slabs with a post-cast area, and the post-cast area is reserved in the distributing type at the two ends of the upper surface and the middle positions of the two sides of the slab; the precast beam comprises a lug-picking beam and a common precast beam, shear-resistant studs are arranged at the top of the beam, two ends of the precast prestressed concrete hollow slab are respectively placed on the lug-picking beam and the common precast beam, and the connection between the slab and the connection between the beam and the slab are realized by local post-pouring. The utility model discloses a hollow slab girt superstructure of precast prestressed concrete is one-way atress, and the atress is clear and definite, belongs to the full assembled system, has that the site operation is fast, simple process, need not vertical support, the wet operation is few, the assembly rate is high, anti-seismic performance is good characteristics.
Description
Technical Field
The utility model belongs to the technical field of building engineering, concretely relates to integral prestressed concrete hollow slab girt superstructure of distributing type post-cast assembly.
Background
The existing assembled floor system is mainly divided into a 'wet' floor system and a 'dry' floor system. The 'wet' floor system comprises an assembled integral floor system and a superposed floor system, the two floor systems need a large amount of concrete wet operation, the number of required templates and supports is large, the operation is complex, and the construction period is long; the assembled 'dry' floor system is mainly a fully prefabricated reinforced concrete floor system, the plate-plate and the beam-plate are connected by welding a large number of on-site embedded parts and cover plates, the system needs more embedded parts, is complex in construction and slow in speed, the welding quality is not easy to guarantee, and the construction cost is high.
The plate-plate connection in the assembled floor system is mainly two. The first connection is a method of directly pouring fine stone concrete or arranging reinforcing steel bars in reserved seams of prefabricated parts after the prefabricated parts are assembled, and pouring a superposed surface layer, the connection method has low industrialization degree and large self weight of the floor slab, the transmission path of the stress of the floor slab and the plane internal and plane external force of the floor slab is not clear after the cast-in-place layer is superposed, and meanwhile, the connection needs more wet operation and needs a large amount of support; the other method is to arrange embedded parts in the prefabricated slab and then connect the embedded parts through the cover plate in a welding manner, the cover plate in the dry-type connection is not firmly connected with the prefabricated slab in an anchoring manner and is easily influenced by the welding quality and temperature stress, and the construction period is longer and the construction cost is higher due to the fact that the number of the welded cover plates is larger, the number of the required embedded parts is larger and the welding difficulty is high in the construction process.
For beam-slab connection, the stirrups of the precast beams are extended out of the surface of precast concrete to form exposed stirrup rings, then the precast slabs are supported on the top surfaces of the beams, the reinforcing steel bars are lapped with each other and then are configured to cross the longitudinal steel bars, and finally, the concrete is integrally poured. The connection has small rotation restriction on the floor slab, the floor system has poor integrity and poor anti-seismic performance, and is difficult to prefabricate, the template is difficult to manufacture, assemble and disassemble, the engineering construction cost is high, and the construction space is narrow and the construction difficulty is high when the reinforcing steel bars at the joints are bound in the later period.
In summary, the existing prefabricated slab for floor slab has many defects, and how to provide a rib beam floor slab with simpler structure, small construction difficulty, high assembly rate and good earthquake resistance becomes one of the problems to be solved in the field.
Disclosure of Invention
The utility model provides a distributed post-cast assembled integral prestressed concrete hollow slab ribbed beam floor system aiming at the defects in the prior art, the floor system consists of an ear picking beam, a common precast beam and a precast prestressed concrete hollow slab I, the precast prestressed concrete hollow slab I is an interlocking type keyway slab with a post-cast area, and the post-cast area is reserved in the distributed mode at the two ends of the upper surface and the middle positions of the two sides of the slab; the precast beam comprises a lug picking beam and a common precast beam, shear-resistant studs are arranged at the top of the beam, two ends of the precast prestressed concrete hollow slab I are respectively placed on the lug picking beam and the common precast beam, and the slab-slab and beam-slab connection is realized by local post-pouring. The utility model discloses a hollow slab girt superstructure of precast prestressed concrete is one-way atress, and the atress is clear and definite, belongs to the full assembled system, has that the site operation is fast, simple process, need not vertical support, the wet operation is few, the assembly rate is high, anti-seismic performance is good characteristics.
The utility model discloses an innovation point lies in setting up a plurality of back pouring district on prefabricated prestressed concrete hollow slab I, after polylith prefabricated prestressed concrete hollow slab I connects each other, corresponding back pouring district connects as an organic whole each other, can pass at this moment and lay concrete to wait to pour thickness half at the back pouring district earlier, then after thick leveling again full lay the reinforcing bar net piece that the net size is 100mm, pour concrete and the board upper surface parallel and level at last, thereby form holistic superstructure, this kind of prefabricated prestressed concrete hollow slab I has realized the effective transmission of in-plane internal force between board and roof beam-board, both avoided a large amount of concrete post-pouring operation in the present "wet" superstructure system, prevented the obscure shortcoming of prefabricated slab coincide atress, avoided needing a large amount of built-in fitting and weldment work in the present "dry floor system simultaneously, and the construction degree of difficulty is big, engineering cost is higher not enough, and in order to be suitable for with prefabricated prestressed concrete hollow slab I, the inventor has provided ear-picking beam and ordinary precast beam that the top has shear bolt nail simultaneously to can be with the better connection of prefabricated prestressed concrete hollow slab I and pour as an organic whole through the back.
The utility model discloses a concrete technical scheme is:
a distributed post-cast assembled integral prestressed concrete hollow slab rib beam floor system is composed of an ear picking beam II, a common precast beam III and a precast prestressed concrete hollow slab I, wherein two ends of the precast prestressed concrete hollow slab I are respectively placed on the ear picking beam II and the common precast beam III, and shear resistant studs are arranged at the tops of the ear picking beam II and the common precast beam III;
the prefabricated prestressed concrete hollow slab I comprises a slab main body, rear pouring areas are reserved in the two ends of the upper surface of the slab main body and the middle positions of the two sides of the upper surface of the slab main body in a distributed mode, and vertical pore channels with the diameter of 100mm are reserved in the rear pouring areas at the ends of the slab main body; a plurality of through holes penetrating through the plate main body are formed in the plate main body, and reinforcing steel bars penetrating through the plate main body and penetrating through the plate main body from two ends are arranged in the plate main body below the through holes; two sides of a plate main body of the precast prestressed concrete hollow plate I are provided with embedded lock type key groove structures;
the floor main body of the utility model is formed by combining the precast prestressed concrete hollow slab I with the structure, the post-pouring area parts at the two ends of the precast prestressed concrete hollow slab I are placed on the ear picking beam and the common precast beam, and the beam-to-plate integral assembly is realized through the shear resistant stud and the post-pouring concrete; the rear pouring areas in the middle parts of the two sides and the rear pouring areas in the middle parts of the two sides of the adjacent precast prestressed concrete hollow slab I are correspondingly connected with each other, then the slab-to-slab integral assembly is realized through the leveling of the poured concrete and the upper surface of the slab, and the integral floor system structure is obtained by matching the poured concrete and the slab, so that compared with the existing precast slab and the corresponding construction method, the precast slab has the characteristics of simple construction process, high assembly speed, less wet operation, high building assembly rate, no need of vertical support, low engineering cost and the like; the obtained floor system has the advantages of reducing the dead weight of the structure, having better integrity, having the characteristics of large rigidity, good sound and heat insulation effect, convenient transportation and installation and the like, being flexible in combination, and being capable of meeting various requirements of punching, opening, cantilever at the plate end or having larger concentrated load and the like in the engineering; in order to conveniently and laterally connect the prefabricated prestressed concrete hollow slabs I, two sides of a slab main body of the prefabricated prestressed concrete hollow slab I are provided with embedded lock type key groove structures.
The method is characterized in that a vertical pore channel with the diameter of 100mm is reserved in a rear pouring area at the end part of the prefabricated prestressed concrete hollow slab I, the vertical pore channel is arranged in a horizontal through hole, and a shear-resistant stud on a beam is prevented from colliding with a steel bar below the two horizontal through holes on a slab body during assembly, so that the prefabricated prestressed concrete hollow slab I can be conveniently connected with the upper surface of the beam in a stud and concrete pouring mode in the pore channel, the connection structural strength of the stud and the beam is enhanced, meanwhile, a steel bar mesh with the mesh size of 100mm is fully paved in the rear pouring area, and the strength of a cover plate can be further improved;
furthermore, the depth of the rear pouring area is generally controlled to be not more than the horizontal diameter of the through hole, so that the strength of the whole plate body is ensured.
The outer side of the ear picking beam II is provided with an ear plate, and the upper surface of the ear plate is flush with the upper surface of the prefabricated prestressed concrete hollow slab I, so that after the pouring of a later pouring area is completed, the upper surfaces of the ear picking beam II, the common prefabricated beam III and the prefabricated prestressed concrete hollow slab I are completely flush, and a complete floor system is formed; wherein the overlap joint length of the precast prestressed concrete hollow slab I, the ear picking beam II and the common precast beam III is respectively 50-60 mm and 80-100 mm, and the upper surfaces of the precast concrete hollow slab I rear pouring area, the ear picking beam II and the common precast beam III are all subjected to roughening treatment, namely, an artificial rough surface with the concave-convex difference not less than 4mm is required to be reserved to ensure the effective bonding of the rear pouring area.
By adopting the prefabricated prestressed concrete hollow slab rib beam floor provided by the utility model, all components can be produced in factory due to the adoption of a post-pouring mode in the whole construction process, thereby being beneficial to realizing standardized operation and ensuring the construction quality; and the construction process is simple, the assembly speed is fast, the wet operation is less, the building assembly rate is high, the vertical support is not needed, the engineering cost is low, and the construction method has obvious progress compared with the prior art.
To sum up, compare earlier with prior art, the utility model discloses following technological effect has been obtained:
1. the utility model discloses it is good that the distributing type post-cast assembles integral prestressed concrete hollow slab rib roof system has simple structure, in-plane atress performance, can realize the characteristics of each prefabricated component's effective connection betterly. The precast prestressed concrete hollow slab I is lapped on the lug-raising beam to provide a hoop effect for the precast concrete hollow slab I, firm in-plane constraint is provided for the precast floor system, integrity is improved, and the floor system has strong plane rigidity. The prefabricated prestressed concrete hollow slab rib beam floor system is stressed in a single direction, is stressed clearly, and avoids the defect that the stress is not clear after the single-direction slabs are poured and superposed in a post-pouring manner in the existing prefabricated assembly type floor system; the horizontal shearing force can be effectively transmitted between the plates through the embedded self-compacting concrete crack pouring, when the floor bears non-uniform load, the load born by a single plate transmits the force to the adjacent plate through a plate crack force transmission mechanism, and the force is jointly born by the surrounding plates. The distributed local post-pouring fully ensures the effective connection of the plate-plate and the beam-plate, avoids the occurrence of the crack along the plate and ensures that the plate-plate and the beam-plate form a homogeneous whole.
2. The utility model discloses water the hollow slab rib roof of the integral prestressed concrete of assembly after distributing type, according to the hogging moment effect district section of floor structure atress and floor, pour the intussuseption in the back of position of board-board crossing and exempt from the high performance toughened concrete that vibrates, pour the district after the position of board-board long limit direction crossing and adopt than the hollow slab I at least high strength level's of precast prestressed concrete self-compaction ordinary concrete (like ECC high performance concrete and fibre reinforced concrete), realized floor structure's self-stabilization, the plane internal rigidity and the wholeness ability of superstructure have been improved.
3. The utility model discloses water after the distributing type and assemble integral prestressed concrete hollow slab rib roof, have that the work progress is simple, the assembly rate is fast, the wet work is few, the building assembly rate is high, need not vertical support, characteristics such as engineering cost hangs down.
4. The utility model discloses the whole batch production of component can be realized to the distributing type after-pouring assembly integral prestressed concrete hollow slab rib roof, is favorable to realizing standardized operation, and construction quality is guaranteed.
5. The utility model discloses water after the distributing type and assemble the empty core plate girt superstructure of integral prestressed concrete, prefabricated hollow core plate I of prestressed concrete is favorable to practicing thrift building material, has alleviateed the superstructure structure dead weight, and the wholeness is better, has characteristics such as rigidity is big, the thermal-insulated effectual, transportation simple to operate that gives sound insulation simultaneously, and the combination is nimble, can satisfy in the engineering to open a hole, opening, board end cantilever or have multiple requirements such as great concentrated load.
Drawings
Fig. 1 is a schematic structural view of the distributed post-cast assembled integral prestressed concrete hollow slab rib beam floor of the present invention when post-casting is not performed;
FIG. 2 is a schematic structural view of a middle prefabricated prestressed concrete hollow slab I of the present invention;
FIG. 3 is a schematic structural view of a middle ear picking beam II of the present invention;
fig. 4 is a schematic structural view of a common precast beam iii according to the present invention;
FIG. 5 is a schematic structural view of the floor after post-casting;
FIG. 6 is a sectional view of the structure at the part A in FIG. 5;
FIG. 7 is a schematic structural view of a connecting part of a precast prestressed concrete hollow slab I and an ear picking beam II;
FIG. 8 is a schematic structural view of a connecting portion between a precast prestressed concrete hollow slab I and a common precast beam III;
in the figure, 1 is a plate main body, 2 is a post-pouring area, 3 is a reinforcing steel bar, 4 is a vertical hole channel, 5 is a through hole, 6 is a main body II of a cantilever ear beam, 7 is a shear-resistant stud, 8 is a main body III of a common precast beam, and 9 is a reinforcing steel bar net piece.
Detailed Description
A distributed post-cast assembled integral prestressed concrete hollow slab rib beam floor system comprises an ear picking beam II, a common precast beam III and a precast prestressed concrete hollow slab I, wherein two ends of the precast prestressed concrete hollow slab I are respectively placed on the ear picking beam II and the common precast beam III, and shear resistant studs 7 are arranged at the tops of the ear picking beam II and the common precast beam III;
the prefabricated prestressed concrete hollow slab I comprises a slab main body 1, rear pouring areas 2 are reserved in the two ends and the middle positions of the two sides of the upper surface of the slab main body 1 in a distributed mode, and a plurality of vertical pore channels 4 with the diameter of 100mm are reserved in the rear pouring areas at the ends; a plurality of through holes 5 penetrating through the plate main body are formed in the plate main body 1, and reinforcing steel bars 3 penetrating through the plate main body and penetrating through the plate main body at two ends are arranged in the plate main body 1 below the through holes 5; two sides of a plate main body of the precast prestressed concrete hollow plate I are provided with embedded lock type key groove structures;
the method is characterized in that a vertical pore channel with the diameter of 100mm is reserved in a rear pouring area of the end part of the prefabricated prestressed concrete hollow slab I, the vertical pore channel is arranged in a horizontal through hole, and a shear-resistant stud on a beam is prevented from colliding with a steel bar below the two horizontal through holes on a slab body during assembly, so that the prefabricated prestressed concrete hollow slab I can be conveniently connected with the upper surface of the beam in a stud and concrete pouring mode in the pore channel, the connection structural strength of the prefabricated prestressed concrete hollow slab I and the beam is enhanced, meanwhile, a steel bar mesh 9 with the mesh size of 100mm is fully paved in the rear pouring area, and the strength of a cover plate can be further improved;
choose II outsides of ear roof beam be provided with the otic placode, the upper surface of otic placode flushes with the upper surface of prefabricated prestressed concrete hollow slab I, pours the district after like this and pours the back and accomplish the back, chooses ear roof beam II, ordinary precast beam III and prefabricated prestressed concrete hollow slab I's upper surface and flushes completely, forms a complete superstructure.
Claims (6)
1. The utility model provides a distributing type post-cast assembly integral prestressed concrete hollow slab rib beam superstructure which characterized in that: the prefabricated prestressed concrete hollow slab comprises an ear picking beam II, a common prefabricated beam III and a prefabricated prestressed concrete hollow slab I, wherein two ends of the prefabricated prestressed concrete hollow slab I are respectively placed on the ear picking beam II and the common prefabricated beam III, and shear-resistant studs (7) are arranged at the tops of the ear picking beam II and the common prefabricated beam III;
the prefabricated prestressed concrete hollow slab I comprises a slab main body (1), rear pouring areas (2) are reserved in the two ends and the middle positions of the two sides of the upper surface of the slab main body (1) in a distributed mode, and a plurality of vertical pore channels (4) with the diameter of 100mm are reserved in the rear pouring areas at the ends; a plurality of through holes (5) penetrating through the plate main body are arranged in the plate main body (1).
2. The distributed post-cast assembled integral prestressed concrete hollow slab rib beam floor system according to claim 1, characterized in that: and reinforcing steel bars (3) penetrating through the plate main body and penetrating out of the plate main body (1) from two ends are arranged in the plate main body (1) below the through hole (5).
3. The distributed post-cast assembled integral prestressed concrete hollow slab rib beam floor system according to claim 1, characterized in that: the I board main part (1) both sides of precast prestressed concrete hollow slab be provided with interlocking formula keyway structure.
4. The distributed post-cast assembled integral prestressed concrete hollow slab rib beam floor system according to claim 1, characterized in that: the lap joint lengths of the precast prestressed concrete hollow slab I, the ear picking beam II and the common precast beam III are respectively 50-60 mm and 80-100 mm.
5. The distributed post-cast assembled integral prestressed concrete hollow slab rib beam floor system according to claim 1, characterized in that: and ear plates are arranged on the outer sides of the ear picking beams II, and the upper surfaces of the ear plates are flush with the upper surface of the precast prestressed concrete hollow slab I.
6. The distributed post-cast assembled integral prestressed concrete hollow slab rib beam floor system according to claim 1, characterized in that: the vertical pore canal (4) is arranged in the horizontal through hole (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921366133.5U CN210658877U (en) | 2019-08-21 | 2019-08-21 | Distributed post-cast assembled integral prestressed concrete hollow slab rib beam floor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921366133.5U CN210658877U (en) | 2019-08-21 | 2019-08-21 | Distributed post-cast assembled integral prestressed concrete hollow slab rib beam floor |
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| CN210658877U true CN210658877U (en) | 2020-06-02 |
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| CN201921366133.5U Active CN210658877U (en) | 2019-08-21 | 2019-08-21 | Distributed post-cast assembled integral prestressed concrete hollow slab rib beam floor |
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| CN (1) | CN210658877U (en) |
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