CN115653182A - Secondary beam structure for assembled self-bearing prestressed floor slab - Google Patents
Secondary beam structure for assembled self-bearing prestressed floor slab Download PDFInfo
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- CN115653182A CN115653182A CN202211153685.4A CN202211153685A CN115653182A CN 115653182 A CN115653182 A CN 115653182A CN 202211153685 A CN202211153685 A CN 202211153685A CN 115653182 A CN115653182 A CN 115653182A
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Abstract
The utility model provides a secondary beam structure for assembled self-supporting prestressing force floor, secondary beam structure include that two parallel arrangement are at the tip roof beam at horizontal both ends, two parallel arrangement are at the vertical secondary beam of vertical both sides, the tip roof beam at both ends and the vertical secondary beam of both sides intersect at the extreme point, the lower part of vertical secondary beam in be provided with vertical prestressing steel, vertical prestressing steel passes the tip roof beam, two vertical secondary beam between be provided with at least one with the vertical well rib that vertical secondary beam is parallel, two tip roof beams are connected respectively at vertical well rib both ends, simultaneously two the tip roof beam in the middle of still be provided with at least one with the crossing cross rib of vertical well rib cross, and the cross rib is crossing in vertical secondary beam perpendicularly, tip roof beam, vertical secondary beam, vertical well rib and cross rib constitute bearing frame jointly, bearing frame upper portion be provided with skeleton integrated into one piece's concrete upper plate, concrete upper plate covers whole skeleton, the vertical outside lower part of vertical secondary beam outwards bulges, forms lower outer flange structure's bottom and vertical secondary beam's bottom has the demand of exempting from big span, and flush the high-span of mould etc..
Description
Technical Field
The invention relates to the technical field of building materials, in particular to a secondary beam structure for an assembled self-bearing prestressed floor slab.
Background
At present, the fabricated floor slab is a floor slab which is poured in a factory, transported to the site and assembled by hoisting equipment. The existing fabricated floor is usually a laminated floor, namely prefabricated slabs are prefabricated in a factory to form prefabricated slabs, then the prefabricated slabs are lifted to the site, a concrete layer is cast on the upper surfaces of the prefabricated slabs in situ, and the concrete layer is connected with the prefabricated slabs through steel bar trusses on the prefabricated slabs. The cross section of the steel bar truss is triangular, the bottom end of the steel bar truss is embedded in the precast slab, and the top end of the steel bar truss protrudes out of the precast slab and extends into the concrete layer. However, the construction of the composite floor slab requires the erection of pipes and formworks, which affects the construction speed and does not meet the requirement of large-span buildings. Therefore, it is highly desirable to develop a novel secondary beam structure for fabricated self-supporting prestressed floors.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a secondary beam structure for an assembled self-bearing prestressed floor slab, which has the characteristics of no high formwork, realization of large-span building requirements and the like.
The technical scheme of the invention is as follows:
the utility model provides a secondary beam structure for assembled self-supporting prestressing force floor, its characterized in that secondary beam structure include that two parallel arrangement are at the tip roof beam at horizontal both ends, two parallel arrangement are at the vertical secondary beam of vertical both sides, the tip roof beam at both ends and the vertical secondary beam of both sides intersect at the extreme point, the lower part of vertical secondary beam in be provided with vertical prestressing steel, vertical prestressing steel passes the tip roof beam, two vertical secondary beam between be provided with at least one with the vertical well rib that vertical secondary beam is parallel, two tip roof beams are connected respectively at vertical well rib both ends, simultaneously two the tip roof beam in the middle of still be provided with at least one with the crossing cross rib of vertical well rib cross, and the cross rib is crossing in vertical secondary beam perpendicularly, tip roof beam, vertical secondary beam, vertical well rib and cross rib constitute the load-carrying skeleton jointly, load-carrying skeleton upper portion be provided with skeleton integrated into one piece's concrete upper plate, the concrete upper plate covers whole skeleton, the vertical outside lower part of vertical secondary beam outwards bulges, form the outer wing structure, the bottom and the bottom of lower wing outer flange structure flush.
The invention has the following beneficial effects: when the secondary beam structure for the assembled self-bearing prestressed floor slab is applied, the end part Liang Dajie of the secondary beam structure is on a bearing structure, a plurality of secondary beam structures for the assembled self-bearing prestressed floor slab are arranged on the bearing structure of the same span side by side, the bearing structure can be a bearing beam of a steel structure or a main beam of a frame structure or a bearing wall or a concrete beam, prestressed steel bars are arranged in the longitudinal secondary beam of the secondary beam structure for the assembled self-bearing prestressed floor slab, and the longitudinal secondary beam is a tension area in the whole floor slab.
First, because of having vertical center rib and horizontal rib in this a secondary beam structure for assembled self-supporting prestressing force floor, increased the width of secondary beam structure like this, and reduced the amalgamation seam of secondary beam structure in same horizontal direction, strengthened the antiseep nature of secondary beam structure, improved the wholeness of whole secondary beam structure and post-cast floor.
By adopting the secondary beam structure for the assembled self-bearing prestressed floor slab, the longitudinal secondary beam can be used as a stressed secondary beam which is vertical to a bearing structure, the concrete floor slab can replace a construction template, the construction operation at the upper part can be directly finished on the concrete floor slab, and the floor slab does not need a pipe frame and a template during construction, is free from support and template;
when the floor slab is constructed, a leveling layer can be laid on the spliced secondary beam structure for the fabricated self-bearing prestressed floor slab, or reinforcing steel bars can be laid on the secondary beam structure and cast-in-situ concrete can be poured on the secondary beam structure, and after the secondary beam structure is formed, the composite floor slab is formed together.
A secondary beam structure for assembled self-supporting prestressing force floor can form the common atress of superimposed sheet with the post-cast concrete surface course, also can bear the force alone.
Secondly, prestressed steel bars are applied in the longitudinal secondary beams and are arched in advance, the deflection is small after stress, the comfort is good, and the span of the floor slab is increased, wherein the span can be 1.5-2.5 times of that of the common prestressed steel pipe truss floor slab; traditional floor construction adopts the steel pipe to do the support formwork, not only needs to consume a large amount of manpower and material resources, and its speed after the construction is also very slow, simultaneously, still need consider the produced manpower and materials cost of later stage form removal and time cost, also need consider the produced a large amount of building rubbish of its form removal. The invention directly adopts the secondary beam structure for the assembled self-bearing prestressed floor slab, so that the floor slab has high construction speed, does not need additional formwork support and formwork removal, is clean and tidy in the whole construction site, does not generate excessive building waste, has large floor slab load and strong bearing capacity, and can walk large-scale moving tools such as a forklift and the like on the upper floor (non-ground floor) of an industrial factory building.
Thirdly, because of adopting the prestressed structure, the steel consumption of the whole floor slab is less: the main ribs are provided with prestressed steel strands, the strength design value of the prestressed steel strands can reach 1320MPa, and the strength of the prestressed steel strands is 3.67 times that of the three-level steel.
Fourthly, when the secondary beam structure construction floor slab for the fabricated self-bearing prestressed floor slab is adopted, a plurality of floors can be simultaneously alternated with flow construction, and the working period can be shortened. When the assembled self-bearing prestressed rib type floor slab is installed, a crane is generally adopted to install the floor slab from the first floor and sequentially install the floor slab to the upper floor, the on-site hoisting process is simple and quick, the construction period is short, the uppermost layer adopts a portal steel frame structure, the manufacturing cost is low, and the investment cost is saved; the floor has high strength, strong bearing capacity and high floor rigidity.
Fifthly, as the secondary beam structure for the assembled self-bearing prestressed floor slab is prefabricated in advance in a factory, in the manufacturing process, a steam-curing hand protecting section and the like can be adopted to improve the strength of the product, and meanwhile, a uniform standardized die is adopted in production, the internal structure of the produced product is uniform and isotropic; the size is accurate, simple to operate, easily cooperates with relevant parts, and the actual working property of steel construction accords with the theoretical calculation result that adopts to the degree high, and the reliability is good, and stability is good.
The invention is suitable for various assembled fast-assembling and assembled floor slabs, and can also be used for civil air defense engineering or bridge engineering.
Preferably, the longitudinal middle rib is provided with a longitudinal prestressed steel bar, and the longitudinal prestressed steel bar penetrates through the end beam.
Preferably, the longitudinal middle rib and the transverse rib are both arranged into a single rib, two ends of the longitudinal middle rib are respectively connected with the middle points of the two end beams, and the transverse rib is equally divided and vertically intersected with the longitudinal secondary beam to form a field-shaped bearing framework structure.
Preferably, the number of the longitudinal middle ribs is one, the number of the transverse ribs is more than two, two ends of each longitudinal middle rib are respectively connected with the middle points of the two end beams, and the transverse ribs are perpendicularly intersected with the longitudinal secondary beams to form a latticed bearing framework structure.
Preferably, the upper part of the longitudinal outer side surface of the longitudinal secondary beam is provided with an inclination angle outwards, or the lower part of the longitudinal outer side surface of the longitudinal secondary beam is provided with an inclination angle outwards.
Preferably, the upper part of the longitudinal outer side of the longitudinal secondary beam protrudes outwards to form an upper outer flange structure, and the protruding width of the upper outer flange structure is smaller than that of the lower outer flange structure.
Preferably, the thickness of the lower outer flange structure on the side close to the longitudinal secondary beam is larger than that on the outer side, so that an outer slope surface is formed.
Preferably, upper longitudinal steel bars are arranged at the upper part in the longitudinal secondary beam, and lower longitudinal steel bars are arranged at the lower part in the longitudinal secondary beam.
Preferably, the lower longitudinal reinforcement is arranged below the longitudinal prestressing reinforcement.
Preferably, the lower part of the end beam at two ends is projected with a lower flange edge, and the bottom of the lower flange edge is flush with the bottom of the end beam.
Preferably, the end beam is projected with an upper flange having a projected width smaller than that of the lower outer flange, the upper flange and the lower flange forming a C-shaped configuration.
Preferably, the end beams or longitudinal sub-beams have reinforcing mesh therein.
Preferably, the mesh reinforcement is exposed from the upper part of the end beam or the longitudinal sub-beam.
Preferably, the inner surface of the concrete upper plate is also provided with a reinforcing rib structure.
Drawings
FIG. 1 is a schematic diagram of a first embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is a schematic view of a second embodiment of the present invention;
FIG. 4 is an enlarged view of a portion of FIG. 3;
FIG. 5 is a schematic view of a third embodiment of the present invention;
FIG. 6 is a partial schematic view of the present invention;
FIG. 7 is an enlarged view of a portion of FIG. 6;
FIG. 8 is a diagram illustrating a fourth embodiment of the present invention;
fig. 9 is a partial schematic view of the present invention.
Wherein, 1 is an end beam, 2 is a longitudinal secondary beam, 3 is a longitudinal middle rib, 4 is a transverse rib, 5 is a longitudinal prestressed reinforcement, 6 is a lower outer flange structure, 7 is an inclination angle, 8 is an upper outer flange structure, 9 is an upper longitudinal reinforcement, 10 is a lower longitudinal reinforcement, 11 is a reinforcement mesh, 12 is a concrete upper plate, and 13 is a reinforcement structure.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 and 2, a secondary beam structure for assembled self-supporting prestressed floor slab, secondary beam structure include two parallel arrangement at the tip roof beam 1 at horizontal both ends, two parallel arrangement at the vertical secondary roof beam 2 of vertical both sides, the tip roof beam 1 at both ends intersects at the extreme point with the vertical secondary roof beam 2 of both sides, the lower part of vertical secondary roof beam in be provided with vertical prestressing steel 5, vertical prestressing steel 5 passes tip roof beam 1, two vertical secondary roof beam 2 between be provided with at least one with the parallel vertical middle rib 3 of vertical secondary roof beam, two tip roof beams 1 are connected respectively to vertical middle rib 3 both ends, simultaneously two tip roof beam 1 in the middle still be provided with at least one with the crossing cross rib 4 of vertical middle rib 3 cross, and the cross rib is perpendicularly intersected in vertical secondary roof beam 2, tip roof beam 1, vertical secondary roof beam 2, vertical middle rib 3 and cross rib 4 constitute the skeleton jointly, bearing skeleton upper portion be provided with skeleton frame integrated into one piece with the concrete upper plate 12 of skeleton, concrete upper plate 12 covers whole secondary roof beam, the vertical secondary roof beam 2, the outside of vertical middle rib 3 and the vertical middle rib 3 is connected to the bottom mid-point structure of vertical middle rib, the vertical wing 3, the bottom mid-point structure is connected two vertical secondary roof beam 2, the vertical wing rib 3 is connected the bottom of vertical outer side rib 3, the vertical outer side structure is connected the vertical outer side rib 3 is connected.
As shown in fig. 3-8, a longitudinal prestressed reinforcement 5 is arranged in the longitudinal middle rib 3, the longitudinal prestressed reinforcement 5 penetrates through the end beams 1, one longitudinal middle rib 3 is arranged, three transverse ribs 4 are arranged, two ends of the longitudinal middle rib 3 are respectively connected with the middle points of the two end beams 1, and the transverse ribs 4 are vertically intersected with the longitudinal secondary beams 2 to form a latticed force-bearing framework structure.
As shown in fig. 6 and 7, the upper part of the longitudinal outer side surface of the longitudinal secondary beam 2 is provided with an inclination angle 7 outwards.
As shown in fig. 3 and 8, the upper part of the longitudinal outer side of the longitudinal secondary beam 2 protrudes outwards to form an upper outer flange structure 8, the protruding width of the upper outer flange structure 8 is smaller than that of the lower outer flange structure 6, the thickness of the lower outer flange structure 6 close to the longitudinal secondary beam 2 is larger than that of the outer side to form an outer slope, the upper part in the longitudinal secondary beam 2 is provided with an upper longitudinal steel bar 9, the lower part is provided with a lower longitudinal steel bar 10, and the lower longitudinal steel bar 10 is arranged below the longitudinal prestressed steel bar 5.
As shown in fig. 1 to 8, the lower part of the end beam 1 at both ends is protruded with a lower flange, the bottom of the lower flange is flush with the bottom of the end beam, the end beam is protruded with an upper flange, the protruding width of the upper flange is smaller than that of the lower outer flange, the upper flange and the lower flange form a C-shaped structure, the end beam and the longitudinal secondary beam, the longitudinal middle rib and the transverse rib are provided with a reinforcing mesh 11, and the reinforcing mesh 11 is exposed.
As shown in fig. 3, the inner surface of the concrete upper plate 12 is also provided with a reinforcing rib structure 13.
The foregoing is illustrative of specific embodiments of the present invention and reference should be made to the implementation of apparatus and structures not specifically described herein, which is understood to be a general purpose apparatus and method of operation known in the art.
Meanwhile, the above embodiments of the present invention are only used for illustrating the technical solutions of the present invention, and are only examples of the technical solutions of the present invention, and are not intended to limit the technical solutions of the present invention and the protection scope thereof. Modifications of the technical solutions disclosed in the claims and the specification by equivalent technical means, equivalent devices and the like should be considered as not exceeding the scope of the claims and the specification of the invention.
Claims (10)
1. The utility model provides a secondary beam structure for assembled self-supporting prestressing force floor slab, its characterized in that secondary beam structure include two parallel arrangement at the tip roof beam at horizontal both ends, two parallel arrangement at the vertical secondary beam of vertical both sides, the tip roof beam at both ends and the vertical secondary beam of both sides intersect at the extreme point, the lower part of vertical secondary beam in be provided with vertical prestressing steel, vertical prestressing steel passes the tip roof beam, two vertical secondary beam between be provided with at least one with the vertical well rib that vertical secondary beam is parallel, two tip roof beams are connected respectively at vertical well rib both ends, simultaneously two the tip roof beam in the middle still be provided with at least one with the crossing cross rib of vertical well rib, and the cross rib intersects perpendicularly in vertical secondary beam, tip roof beam, vertical secondary beam, vertical well rib and cross rib constitute the load-bearing skeleton jointly, load-bearing skeleton upper portion be provided with skeleton integrated into one piece's concrete upper plate, the concrete upper plate covers whole skeleton, the vertical outside lower part of vertical secondary beam outwards bulges, forms the outer flange structure of lower wing, the bottom of lower wing outer flange structure flushes bottom.
2. A secondary beam structure for an assembled self-supporting prestressed floor slab, as claimed in claim 1, wherein said longitudinal central rib has longitudinally prestressed reinforcement disposed therein, said longitudinally prestressed reinforcement extending through said end beams.
3. The secondary beam structure for the assembled self-bearing prestressed floor slab as claimed in claim 2, wherein said longitudinal central rib and said transverse rib are both provided in a single piece, both ends of said longitudinal central rib are respectively connected to the middle points of two end beams, and said transverse rib is equally divided and perpendicularly intersected with said longitudinal secondary beam to form a field-shaped load-bearing skeleton structure.
4. The secondary beam structure for the fabricated self-bearing prestressed floor slab as claimed in claim 1, wherein the number of the longitudinal middle ribs is one, the number of the transverse ribs is two or more, two ends of the longitudinal middle rib are respectively connected with the middle points of the two end beams, and the transverse ribs are perpendicularly intersected with the longitudinal secondary beams to form a grid-shaped bearing framework structure.
5. A secondary beam structure for an assembled self-supporting prestressed floor slab, as claimed in claim 1, wherein the upper portion of the longitudinal outer side of said longitudinal secondary beam is outwardly provided with an inclination angle, or the lower portion of the longitudinal outer side of said longitudinal secondary beam is outwardly provided with an inclination angle.
6. A secondary beam structure for an assembled self-supporting prestressed floor slab, as claimed in any one of claims 1 to 5, characterized in that the longitudinally outer upper portions of said longitudinal secondary beams are outwardly convex, forming an upper outer flange formation, and the convex width of the upper outer flange formation is smaller than the convex width of the lower outer flange formation.
7. A secondary beam structure for an assembled self-supporting prestressed floor slab, as claimed in any one of claims 1 to 5, wherein the lower outer flange portion is configured to have a greater thickness on the side adjacent the longitudinal secondary beam than on the outer side, forming an outer slope.
8. A secondary beam structure for assembled self-supporting prestressed floors as claimed in any one of claims 1 to 5, wherein upper longitudinal rebars are provided at upper portions and lower longitudinal rebars are provided at lower portions in said longitudinal secondary beams; or the lower longitudinal steel bar is arranged below the longitudinal prestressed steel bar; or the lower parts of the end beams at the two ends are protruded with lower flange edges, and the bottoms of the lower flange edges are flush with the bottoms of the end beams.
9. A secondary beam structure for assembled self-supporting prestressed floors as claimed in any one of claims 1 to 5, wherein said end beams are bulged with an upper flange, and the bulging width of the upper flange is smaller than the bulging width of the lower outer flange, the upper and lower flanges forming a C-shaped configuration.
10. A secondary beam structure for an assembled self-supporting prestressed floor slab, as claimed in any one of claims 1 to 5, wherein the end beams or longitudinal secondary beams or longitudinal ribs or transverse ribs are provided with reinforcing meshes; or the reinforcing mesh is exposed from the upper part of the end beam or the longitudinal secondary beam; or the inner surface of the concrete upper plate is also provided with a reinforcing rib structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211153685.4A CN115653182A (en) | 2022-09-21 | 2022-09-21 | Secondary beam structure for assembled self-bearing prestressed floor slab |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211153685.4A CN115653182A (en) | 2022-09-21 | 2022-09-21 | Secondary beam structure for assembled self-bearing prestressed floor slab |
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| Publication Number | Publication Date |
|---|---|
| CN115653182A true CN115653182A (en) | 2023-01-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211153685.4A Pending CN115653182A (en) | 2022-09-21 | 2022-09-21 | Secondary beam structure for assembled self-bearing prestressed floor slab |
Country Status (1)
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|---|---|
| CN (1) | CN115653182A (en) |
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- 2022-09-21 CN CN202211153685.4A patent/CN115653182A/en active Pending
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