CN115949132A - Prestress rib beam plate composite structure system - Google Patents
Prestress rib beam plate composite structure system Download PDFInfo
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- CN115949132A CN115949132A CN202310134501.8A CN202310134501A CN115949132A CN 115949132 A CN115949132 A CN 115949132A CN 202310134501 A CN202310134501 A CN 202310134501A CN 115949132 A CN115949132 A CN 115949132A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
A prestressed ribbed beam plate composite structure system comprises a steel pipe concrete column, a U-shaped combined steel main beam, a secondary steel frame beam and a double-beam plate composite floor slab, wherein the steel pipe concrete column consists of an outer steel pipe and an inner poured concrete, the U-shaped steel main beam comprises double webs, an upper flange, a bottom plate and concrete, the U-shaped steel main beam is welded and connected with the steel pipe concrete column, the double-beam plate composite floor slab comprises a double-beam precast slab and a post-poured steel bar concrete, two ends of the double-beam precast slab are fixedly connected with the U-shaped steel main beam respectively, the secondary steel frame beam is welded and connected with the steel pipe concrete column and is arranged in a direction parallel to the span direction of the double-beam precast slab, and the double-beam precast slab, the U-shaped steel main beam and the secondary steel beam are cast with the concrete in the U-shaped steel main beam into a whole through the post-poured steel bar concrete. The double-beam plate is used in the large span direction, the secondary frame beam is a variable cross-section beam, the height of the large span direction beam is small, the reduction of the floor height is facilitated, the main body of the double-beam plate combined structure system is mainly made of a steel structure, the allowable deformation is large, and the cross section of the column can be reduced.
Description
Technical Field
The invention relates to the field of building structures, in particular to a prestressed rib beam plate combined structure system.
Background
A concrete frame structure system is usually adopted for a multi-story or low-rise large-span building, and under the condition of the same seismic intensity and load working condition, compared with a steel structure system, the problems of small allowable displacement, large column section, large reinforcing bar and the like exist. The pure steel structure mainly adopts a steel secondary beam to combine the floor, namely, the vertical load is transmitted to the steel main beam through the steel secondary beam, and then the steel main beam is transmitted to the column, so that the problems of large steel consumption, high manufacturing cost and the like exist. A low-cost structural system for bearing vertical force by prestressed concrete floor and horizontal force by steel frame is not disclosed.
Disclosure of Invention
The present invention is to overcome the above-mentioned deficiencies of the prior art and to provide a prestressed rib plate composite structure system.
The invention provides a prestressed ribbed beam plate composite structure system, which comprises a steel pipe concrete column, a U-shaped steel and concrete composite main beam, a steel secondary frame beam and a reinforced concrete double-beam plate laminated floor slab, wherein the steel pipe concrete column consists of an outer steel pipe and an inner poured concrete, the outer steel pipe is circular or rectangular, the U-shaped steel and concrete composite main beam comprises double webs, upper flanges, a bottom plate and concrete, the double webs consist of two vertical steel plates, the lower ends of the two vertical steel plates are welded with the bottom plate to form a U-shaped cavity, a plurality of U-shaped steel brackets are welded on the outer side surfaces of the double webs, the upper ends of the double webs are respectively welded with the upper flanges, a tie piece is welded between the two upper flanges at a certain distance in the longitudinal direction, and the U-shaped steel and concrete main beam are combined with the steel pipe concrete column in a welding way, the reinforced concrete double-beam slab superposed floor comprises a plurality of double-beam precast slabs and post-cast reinforced concrete, each double-beam precast slab comprises a flat plate and two rib beams, the two rib beams are arranged on the lower side of the flat plate in the length direction in parallel, prestressed steel strands and mesh stirrups are embedded in the rib beams, two ends of each double-beam precast slab are respectively arranged on the U-shaped steel bracket of the U-shaped steel and concrete combined main beam, each steel secondary frame beam is H-shaped steel, the end part of each steel secondary frame beam is connected with the steel pipe concrete column and is arranged in parallel to the span direction of the double-beam precast slabs, and the double-beam precast slabs, the U-shaped steel and concrete combined main beam and the steel secondary beams are integrally cast through the post-cast reinforced concrete and the concrete in the U-shaped steel main beam.
The double webs at the inner lower part of the U-shaped steel bracket are provided with concrete overflow holes, and concrete is filled between the end part of the double-beam precast slab and the double webs.
And a curve prestressed steel strand is embedded in the inner side of the U-shaped combined steel main beam, and the curve is in a parabolic shape with an upward opening.
The prestressed steel strand consists of an upper row of steel strands and a lower row of steel strands, and the upper row of prestressed steel strands and the lower row of prestressed steel strands are respectively embedded at the upper part and the lower part of the rib beam.
And at least one group of transverse trusses is arranged between the two rib beams of the double-beam precast slab.
The post-cast reinforced concrete comprises cast-in-situ concrete, mesh ribs and negative-moment reinforcing steel bars, wherein the mesh ribs are embedded in the cast-in-situ concrete.
The H-shaped steel section of the steel secondary frame beam is a variable section.
The steel subframe beams are arranged at least in compartments.
And an inter-column support is arranged at a proper position of the frame parallel to the span direction of the steel secondary frame beam, and the inter-column support can adopt an X-shaped support, a door-shaped support or an anti-buckling support.
Compared with the prior art, the combined structure system of the prestressed rib beam plate provided by the invention has the following advantages:
1. the main body of the double-beam plate combined structure system mainly adopts a steel structure, the allowable deformation is large, and the section of the column can be reduced;
2. the double-beam plate is used in the large span direction, the secondary frame beam is a variable cross-section beam, and the height of the large span direction beam is small, so that the layer height is reduced.
3. The characteristics of large bearing capacity of the steel pipe concrete, large allowable deformation of the steel frame, large span of the prestressed laminated floor system, low cost and convenient hoisting are fully exerted, and the performance-price ratio of the structure system is high.
Drawings
FIG. 1 is a schematic diagram of the combined architecture of the present invention.
Fig. 2 is a plan view of a steel main beam of the composite structural system of the present invention.
Fig. 3 is a schematic view of a double beam plate of the composite structural system of the present invention.
FIG. 4 is a node diagram of the composite architecture of the present invention.
FIG. 5 is a schematic view of a dual beam panel support of the composite structural system of the present invention.
FIG. 6 is a plan view of the composite structural architecture of the present invention.
FIG. 7 is a schematic view of a diagonal brace of the composite structural system of the present invention.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully hereinafter with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention 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.
Referring to fig. 1 to 7, in an embodiment of a prestressed rib beam slab composite structure system according to the present invention, the prestressed rib beam slab composite structure system includes a steel pipe concrete column 1, a U-shaped steel-concrete composite main beam 2, a steel sub-frame beam 3, and a reinforced concrete double-beam slab composite floor slab 4, the steel pipe concrete column 1 is composed of an outer steel pipe 11 and an inner concrete poured slab 12, the outer steel pipe 11 is circular or rectangular, the U-shaped steel-concrete composite main beam 2 includes a double web 21, an upper flange 22, a bottom plate 23, and concrete 24, the double web 21 is composed of two vertical steel plates, lower ends of the two vertical steel plates are welded to the bottom plate 23 to form a U-shaped cavity, a plurality of U-shaped steel corbels 26 are welded to an outer side surface of the double web 21, the upper ends of the double web 21 are respectively welded to the upper flange 22, tie members 25 are welded between the two upper flanges 22 at a certain distance in a longitudinal direction, the U-shaped concrete composite main beam 2 is welded to the steel pipe concrete column 1, the reinforced concrete double-beam-slab composite floor slab 4 comprises a plurality of double-beam precast slabs 41 and post-cast reinforced concrete 42, each double-beam precast slab 41 comprises a flat slab 411 and two rib beams 412, the two rib beams 412 are arranged on the lower side of the flat slab 411 in the longitudinal direction in parallel, prestressed steel strands 413 and mesh stirrups 414 are embedded in the rib beams 412, two ends of each double-beam precast slab 41 are respectively placed on the U-shaped steel bracket 26 of the U-shaped steel and concrete combined main beam 2, the secondary steel frame beam 3 is H-shaped steel, the end part of each secondary steel frame beam is connected with the steel pipe concrete column 1 and is arranged in parallel to the span direction of the double-beam precast slab 41, the double-beam precast slabs 41, the U-shaped steel and concrete combined main beam 2 and the secondary steel beam 3 are cast into a whole through the post-cast reinforced concrete 42 and the concrete 24 in the U-shaped steel and concrete combined main beam 2. The structure system adopts the double-beam precast slab embedded with the prestressed steel strands as a beam slab member, thereby not only reducing the number of secondary beams, but also reducing the beam height, and the U-shaped steel and concrete combined main beam is used as a mold and a structural stress member, thereby greatly reducing the comprehensive cost of the system.
Referring to fig. 1 to 5, in an embodiment of a prestressed rib beam slab composite structure system provided by the invention, concrete overflow holes 27 are formed in the double webs 21 at the inner lower part of the U-shaped steel corbel 26, and concrete is filled between the end of the double beam precast slab 41 and the double webs 21. The concrete overflow hole 27 can enable concrete to flow to the steel corbels from the interior of the main beam when the main beam is poured, and therefore the integrity of the node is improved.
Referring to fig. 1 to 5, in an embodiment of a prestressed rib beam-slab combined structural system provided by the present invention, a curved prestressed steel strand 211 is embedded inside the U-shaped combined steel and concrete combined main beam 2, and the curve is in a parabolic shape with an upward opening. And steel strands are laid in a post-tensioned prestressing mode, so that the structural bearing capacity is improved.
Referring to fig. 1 to 5, in an embodiment of the prestressed rib beam plate combined structure system according to the present invention, the prestressed steel strands are composed of an upper row of steel strands 4132 and a lower row of steel strands 4131, and the upper row of prestressed steel strands 4132 and the lower row of prestressed steel strands 4131 are embedded in the upper portion and the lower portion of the rib beam 412, respectively. The upper prestress steel strands 4132 are balance steel bars, the placing plate arches upwards, and the lower prestress steel strands 4131 are beneficial to improving the bearing capacity of the plate.
Referring to fig. 1 to 5, in an embodiment of the present invention, in which a prestressed ribbed beam slab composite structural system is provided, at least one set of transverse girders 415 are disposed between two ribbed beams 412 of the double-beam precast slab 41. The cross girders 415 solve both the planar stability problem and the deformation coordination problem of the rib beams 412.
Referring to fig. 1 to 5, in an embodiment of a prestressed rib beam slab composite structure system according to the present invention, the post-cast reinforced concrete 42 includes a cast-in-place concrete 421, a mesh reinforcement 422, and a negative moment reinforcement 423, and the mesh reinforcement 422 is embedded in the cast-in-place concrete 421. The post-cast reinforced concrete 42 effectively improves structural integrity.
Referring to fig. 1 to 5, in an embodiment of a prestressed rib plate combined structural system according to the present invention, the H-shaped steel section of the steel sub-frame beam 3 is a variable section. The cross-sectional dimension is optimized.
Referring to fig. 1 to 5, in an embodiment of the present invention, which provides a prestressed rib plate composite structural system, the steel sub-frame beams 3 are arranged at least in compartments. The number of the steel secondary beams 3 is reduced.
Referring to fig. 1 to 5, in an embodiment of a prestressed rib beam plate composite structural system provided by the invention, an inter-column support 5 is arranged at a proper position of a frame parallel to the span direction of the steel secondary frame beam 3, and the inter-column support can adopt an X-shaped support, a door-shaped support or an anti-buckling support. And the rigidity and the strength of the structure in the horizontal direction are ensured.
In the present invention, all of the "certain height and certain distance" means the length necessary to meet the design requirements, that is, the length required to adapt to the connection and strength requirements, and the length is clear to those skilled in the art and can be set as required.
Claims (9)
1. A prestressed ribbed beam slab composite structure system comprises a steel pipe concrete column, a U-shaped steel and concrete composite main beam, a steel secondary frame beam and a reinforced concrete double-beam slab laminated floor slab, and is characterized in that the prestressed ribbed beam slab composite structure system comprises a steel pipe concrete column, a U-shaped steel and concrete composite main beam, a steel secondary frame beam and a reinforced concrete double-beam slab laminated floor slab
The steel tube concrete column consists of an outer steel tube and an inner concrete pouring tube, the shape of the outer steel tube is round or rectangular,
the U-shaped steel and concrete combined main beam comprises a double web plate, upper flanges, a bottom plate and concrete, the double web plate is composed of two vertical steel plates, the lower ends of the two vertical steel plates are welded with the bottom plate to form a U-shaped cavity, a plurality of U-shaped steel brackets are welded on the outer side surface of the double web plate, the upper flanges are respectively welded on the upper ends of the double web plate, tie pieces are welded between the two upper flanges at a certain distance longitudinally, the U-shaped steel and concrete combined main beam is welded on the steel pipe concrete column,
the reinforced concrete double-beam plate superposed floor slab comprises a plurality of double-beam precast slabs and post-cast reinforced concrete, the double-beam precast slabs comprise flat plates and two rib beams, the two rib beams are arranged at the lower side of the flat plates in the length direction in parallel, prestressed steel strands and mesh stirrups are embedded in the rib beams, two ends of each double-beam precast slab are respectively placed on the U-shaped steel brackets of the U-shaped steel and concrete combined main beam,
the steel secondary frame beam is H-shaped steel, the end part of the steel secondary frame beam is connected with the steel pipe concrete column and is arranged in parallel to the span direction of the double-beam precast slab,
the double-beam precast slab, the U-shaped steel and concrete combined main beam and the steel secondary beam are cast into a whole through the post-cast reinforced concrete and the concrete in the U-shaped steel main beam.
2. The prestressed ribbed beam slab composite structure system of claim 1, wherein the double webs of the inner lower part of the U-shaped steel corbel are provided with concrete overflow holes, and concrete is filled between the end parts of the double-beam precast slabs and the double webs.
3. The system of claim 1, wherein the U-shaped steel main beams are embedded with curved prestressed steel strands, and the curve is in the shape of a parabola with an upward opening.
4. The prestressed rib beam slab composite structural system of claim 1, wherein said prestressed steel strands are composed of an upper row of steel strands and a lower row of steel strands, and said upper row of prestressed steel strands and said lower row of prestressed steel strands are embedded in the upper portion and the lower portion of said rib beam, respectively.
5. A prestressed ribbed panel composite construction system as claimed in claim 1 wherein at least one set of transverse trusses is disposed between two of said ribs of said double-beam precast panel.
6. The prestressed rib beam slab composite structure system of claim 1, wherein said post-cast reinforced concrete includes cast-in-situ concrete, mesh reinforcement and hogging moment reinforcement, said mesh reinforcement being embedded in said cast-in-situ concrete.
7. A prestressed rib beam panel composite structural system according to claim 1, wherein said steel secondary frame beam has a variable cross-section in its H-shaped steel cross-section.
8. A prestressed rib plate composite structural system according to claim 1, wherein said steel secondary frame beams are arranged at least in compartments.
9. The prestressed rib beam slab composite structural system as claimed in claim 1, wherein said framework parallel to the span direction of said steel secondary frame beam is provided with inter-column supports at proper positions, and said inter-column supports can adopt X-shaped, door-shaped or anti-buckling supports.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310134501.8A CN115949132A (en) | 2023-02-08 | 2023-02-08 | Prestress rib beam plate composite structure system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310134501.8A CN115949132A (en) | 2023-02-08 | 2023-02-08 | Prestress rib beam plate composite structure system |
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| Publication Number | Publication Date |
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| CN115949132A true CN115949132A (en) | 2023-04-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310134501.8A Pending CN115949132A (en) | 2023-02-08 | 2023-02-08 | Prestress rib beam plate composite structure system |
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| CN (1) | CN115949132A (en) |
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- 2023-02-08 CN CN202310134501.8A patent/CN115949132A/en active Pending
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