CN218346525U - Prestressed large-span concrete floor - Google Patents
Prestressed large-span concrete floor Download PDFInfo
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- CN218346525U CN218346525U CN202222318290.7U CN202222318290U CN218346525U CN 218346525 U CN218346525 U CN 218346525U CN 202222318290 U CN202222318290 U CN 202222318290U CN 218346525 U CN218346525 U CN 218346525U
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Abstract
The utility model provides a prestressing force large-span concrete floor, includes lower floor's reinforcing bar net (1), its characterized in that: the upper portion of lower floor's reinforcing bar net (1) is provided with upper reinforcing bar net (2), vertically on one side of lower floor's reinforcing bar net (1) fixed be provided with two-layer or multilayer left anchor seat (3), the opposite side of lower floor's reinforcing bar net (1) corresponds fixed be provided with two-layer or multilayer right anchor seat (4), be located in the coplanar left anchor seat (3) and be fixed with arc prestressing tendons (5) that upwards arch up between right anchor seat (4), perhaps the both ends of arc prestressing tendons (5) are fixed mutually through connecting piece and left anchor seat (3) and right anchor seat (4) respectively, it is parallel or perpendicular between upper and lower adjacent two-layer arc prestressing tendons (5), this application is rational in infrastructure, construction convenience, the reinforcing bar intensity in the reinforced concrete component has obtained make full use, bearing capacity and crack resistance can all be improved, it is good to use the security.
Description
Technical Field
The utility model relates to a concrete floor especially relates to a prestressing force large-span concrete floor, belongs to building element technical field.
Background
The floor slab has certain technical advantages in the building process, has good integrity and continuity, is suitable for large-scale use in large bays and large areas, and is convenient to construct. In the structure of common reinforced concrete, because the concrete ultimate tensile strain becomes low, the strain of the steel bar in the concrete member greatly exceeds the ultimate tensile strain of the concrete, especially in a plate-shaped structure with a large area and a large bay, the plate-shaped structure needs to bear changeable external load besides the load of the self weight, and when the concrete member bears a large load, the concrete is easily pulled to generate cracks, and the safety of the concrete plate structure is influenced seriously. It is not reasonable to adopt high strength steel bar to large area concrete slab or floor slab one side, and the reinforcing bar strength in the reinforced concrete member is not fully utilized. The current situation is changed by a novel large-area floor slab structure which is convenient to construct, economical, applicable and strong in bearing capacity.
Disclosure of Invention
The utility model provides an aim at to current concrete floor simple structure, bearing capacity is limited, be used for the area great, there is the technical bottleneck in the great building structure between the break, make the concrete to be drawn easily and the crack appears when bearing great load, the not good defect of anti-cracking property is not enough, provide a rational in infrastructure, construction convenience, reinforcing bar intensity in the reinforced concrete component has obtained make full use of, bearing capacity and anti-cracking property all can obtain improving, even also can not make the concrete draw and the cracked prestressing force large-span concrete floor appears when bearing great load.
In order to achieve the purpose, the technical solution of the application is as follows: the utility model provides a prestressing force large-span concrete floor, includes lower floor's reinforcing bar net, its characterized in that: the upper part of lower floor's reinforcing bar net is provided with upper strata reinforcing bar net, vertically on one side of lower floor's reinforcing bar net the fixed two-layer or multilayer left anchor seat that is provided with, the opposite side of lower floor's reinforcing bar net corresponds the fixed two-layer or multilayer right anchor seat that is provided with, be located in the coplanar left anchor seat and be fixed with the arc prestressing tendons of ascending arch between the right anchor seat, perhaps the both ends of arc prestressing tendons are fixed mutually through connecting piece and left anchor seat and right anchor seat respectively, it is parallel or perpendicular between the two-layer arc prestressing tendons of upper and lower adjacent.
Furthermore, lower floor's reinforcing bar net and upper strata reinforcing bar net adopt vertically and horizontally staggered reinforcing bar fixed respectively to form, connect fixedly between lower floor's reinforcing bar net and the upper strata reinforcing bar net through many vertical reinforcing bars.
Furthermore, the left anchoring seat and the right anchoring seat are steel structural members with steel bar fixing slotted holes or notches, and the left anchoring seat and the right anchoring seat are in single shapes or long strips and are welded or anchored on the lower layer steel bar net.
Furthermore, the connecting piece includes connecting block, first dead lever and second dead lever, and the both ends of arc prestressing tendons are fixed with the connecting block respectively, are fixed mutually with the one end of first dead lever and second dead lever on the connecting block respectively, and first dead lever and second dead lever are the V type and distribute, and the other end of first dead lever and second dead lever is fixed respectively on left anchor seat or right anchor seat.
Furthermore, the connecting piece includes connecting block and arc dead lever, and the both ends of arc prestressing tendons are fixed with the connecting block respectively to the connecting block is fixed at the middle part of arc dead lever, and the both ends of arc dead lever are fixed respectively on left anchor seat or right anchor seat.
Furthermore, the length of the arc-shaped prestressed tendon is greater than the linear distance between the installation parts of the left anchoring seat and the right anchoring seat, and the height of the arc surface of the arc-shaped prestressed tendon is less than or equal to the distance between the lower layer reinforcing mesh and the upper layer reinforcing mesh.
Furthermore, the arc-shaped prestressed tendons adopt twisted steel bars, indented steel wires or steel strands.
Furthermore, the concrete pouring area is arranged between the lower layer reinforcing mesh and the upper layer reinforcing mesh and the surrounding area.
Compared with the prior art, the beneficial effects of this application are:
1. the application adopts the multilayer arc prestressed tendons on the basis of the steel bar framework structure, applies certain prestress to the prestressed tendons before use to form an upward arched arc structure, when a floor slab structure bears larger load, the pre-pressure of the arc prestressed tendons is offset at first, and the strength of steel bars in the reinforced concrete member is fully utilized.
2. This application adopts the fixed arc prestressing tendons of anchor seat, can adopt multiple connection fixed mode between anchor seat and the arc prestressing tendons, and the installation anchor is very convenient, has guaranteed the reliability of connecting to can adapt to the installation needs of different thickness floors.
3. This application is rational in infrastructure, and construction convenience, bearing capacity and anti cracking performance all can obtain improving, even can not make the concrete to be drawn and the crack appears when bearing great load yet, can the wide application in the great, the great building structure of division of area.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of the present application.
Fig. 2 is a top view of the interior of fig. 1.
Fig. 3 is a schematic structural diagram of a second embodiment of the present application.
Fig. 4 is an internal plan view of fig. 3.
Fig. 5 is a schematic structural diagram of a second embodiment of the present application.
Fig. 6 is an interior top view of fig. 5.
In the figure: lower floor's reinforcing bar net 1, upper reinforcing bar net 2, left anchor seat 3, right anchor seat 4, arc prestressing tendons 5, connecting block 6, first dead lever 7, second dead lever 8, arc dead lever 9, concrete placement region 10.
Detailed Description
The present application is described in further detail below with reference to the following description of the figures and the detailed description.
Referring to fig. 1 to 6, the prestressed large-span concrete floor slab of the present application includes a lower layer reinforcing mesh 1, and is characterized in that: the upper portion of lower floor's reinforcing bar net 1 is provided with upper reinforcing bar net 2, vertically on the one side of lower floor's reinforcing bar net 1 fixedly be provided with two-layer or multilayer left anchor seat 3, the opposite side of lower floor's reinforcing bar net 1 corresponds fixedly and is provided with two-layer or multilayer right anchor seat 4, be located and be fixed with the arc prestressing tendons 5 that upwards arch up between left anchor seat 3 and the right anchor seat 4 in the coplanar, perhaps the both ends of arc prestressing tendons 5 are fixed mutually with left anchor seat 3 and right anchor seat 4 through the connecting piece respectively, it is parallel or perpendicular between the adjacent two-layer arc prestressing tendons 5 from top to bottom.
Lower floor's reinforcing bar net 1 and upper reinforcing bar net 2 adopt vertically and horizontally staggered's reinforcing bar to fix respectively and form, connect fixedly through many vertical reinforcing bars between lower floor's reinforcing bar net 1 and the upper reinforcing bar net 2.
The left anchoring seat 3 and the right anchoring seat 4 are steel structural members with steel bar fixing slotted holes or notches, and the left anchoring seat 3 and the right anchoring seat 4 are in a single shape or a strip shape and are welded or anchored on the lower layer reinforcing mesh 1.
The connecting piece includes connecting block 6, first dead lever 7 and second dead lever 8, and the both ends of arc prestressing tendons 5 are fixed with connecting block 6 respectively, are fixed mutually with the one end of first dead lever 7 and second dead lever 8 on the connecting block 6 respectively, and first dead lever 7 and second dead lever 8 are the V type and distribute, and the other end of first dead lever 7 and second dead lever 8 is fixed respectively on left anchor seat 3 or right anchor seat 4.
The connecting piece includes connecting block 6 and arc dead lever 9, and the both ends of arc prestressing tendons 5 are fixed with connecting block 6 respectively to connecting block 6 is fixed at the middle part of arc dead lever 9, and the both ends of arc dead lever 9 are fixed respectively on left anchor seat 3 or right anchor seat 4.
The length of the arc-shaped prestressed tendons 5 is larger than the linear distance between the installation parts of the left anchoring seat 3 and the right anchoring seat 4, and the height of the arc surfaces of the arc-shaped prestressed tendons 5 is smaller than or equal to the distance between the lower layer reinforcing mesh 1 and the upper layer reinforcing mesh 2.
The arc-shaped prestressed tendons 5 are made of twisted steel bars, indented steel wires or steel strands.
The concrete pouring area 10 is formed between the lower layer reinforcing mesh 1 and the upper layer reinforcing mesh 2 and in the surrounding area.
Referring to the attached drawing 1 in particular, in order to solve the problem that the bearing capacity of a single concrete floor with a large area is limited, the strength of steel bars in a reinforced concrete member is fully utilized, and meanwhile, the condition that cracks are easy to appear after a large-area floor bears load is avoided. The floor is characterized in that an upper layer reinforcing mesh 2 and a lower layer reinforcing mesh 1 are arranged in the floor body, the lower layer reinforcing mesh 1 and the upper layer reinforcing mesh 2 are formed by fixing criss-cross reinforcing steel bars respectively, the lower layer reinforcing mesh 1 and the upper layer reinforcing mesh 2 are connected and fixed through a plurality of longitudinal vertical reinforcing steel bars, and a reinforcing steel bar framework structure can be arranged in a welding or binding fixing mode and is formed by casting on site integrally.
In order to realize the anchoring of the arc-shaped prestressed tendons 5, a left anchoring seat 3 is fixedly arranged on one side of the lower-layer reinforcing mesh 1, a right anchoring seat 4 is fixedly arranged on the other side of the lower-layer reinforcing mesh 1, and the left anchoring seat 3 and the right anchoring seat 4 can be symmetrically arranged or asymmetrically arranged. The left anchoring seat 3 and the right anchoring seat 4 are steel structural members with steel bar fixing slotted holes or notches, and the left anchoring seat 3 and the right anchoring seat 4 are single block-shaped or strip-shaped and are welded or anchored on the lower layer steel bar mesh 1. An arc-shaped prestressed tendon 5 which is arched upwards is fixed between the left anchoring seat 3 and the right anchoring seat 4, one end of the arc-shaped prestressed tendon 5 is fixed on the left anchoring seat 3, and the other end of the arc-shaped prestressed tendon 5 is fixed on the right anchoring seat 4.
Can also realize being connected fixedly between arc prestressing tendons 5's tip and left anchor seat 3 or the right anchor seat 4 through the connecting piece, the connecting piece includes connecting block 6, first dead lever 7 and second dead lever 8, arc prestressing tendons 5's both ends are fixed with connecting block 6 respectively, it is fixed mutually with the one end of first dead lever 7 and second dead lever 8 respectively on the connecting block 6, first dead lever 7 and second dead lever 8 are the V type and distribute, the other end of first dead lever 7 and second dead lever 8 is fixed respectively on left anchor seat 3 or right anchor seat 4.
The other fixing mode is that the connecting piece adopts a connecting block 6 and an arc-shaped fixing rod 9, the two ends of the arc-shaped prestressed tendon 5 are respectively fixed with the connecting block 6, the connecting block 6 is fixed in the middle of the arc-shaped fixing rod 9, and the two ends of the arc-shaped fixing rod 9 are respectively fixed on the left anchoring seat 3 or the right anchoring seat 4. The arc-shaped fixing rod 9 only plays a role in fixed connection, is convenient to install and weld, reduces welding joints, can also provide certain elastic support, and can adapt to the thicknesses of different floor slabs.
The utility model provides an arc prestressing tendons 5's length is greater than the straight line interval of installation position between left anchor seat 3 and the right anchor seat 4, and the arc surface height less than or equal to of arc prestressing tendons 5 is the interval between lower floor's reinforcing bar net 1 and the upper reinforcing bar net 2, and the arc prestressing tendons 5 of being convenient for like this install between lower floor's reinforcing bar net 1 and upper reinforcing bar net 2. After concrete is poured, accessories such as a lower-layer reinforcing mesh 1, an upper-layer reinforcing mesh 2, arc-shaped prestressed tendons 5 and connectors are poured into the concrete, and finally a large-area prestressed floor structure is formed.
The above is a detailed description of the present application with reference to specific embodiments, and the specific embodiments of the present application should not be considered limited to the description, and simple substitutions made by those skilled in the art without departing from the spirit of the present application should be considered as falling within the protection scope of the present application.
Claims (8)
1. The utility model provides a prestressing force large-span concrete floor, includes lower floor's reinforcing bar net (1), its characterized in that: the upper portion of lower floor's reinforcing bar net (1) is provided with upper reinforcing bar net (2), vertically on one side of lower floor's reinforcing bar net (1) fixed be provided with two-layer or multilayer left anchor seat (3), the opposite side of lower floor's reinforcing bar net (1) corresponds fixed be provided with two-layer or multilayer right anchor seat (4), be located the coplanar left anchor seat (3) and be fixed with arc prestressing tendons (5) that upwards arch up between right anchor seat (4), perhaps the both ends of arc prestressing tendons (5) are fixed mutually through connecting piece and left anchor seat (3) and right anchor seat (4) respectively, it is parallel or perpendicular between upper and lower adjacent two-layer arc prestressing tendons (5).
2. A prestressed large-span concrete floor according to claim 1, characterized in that: the lower layer reinforcing mesh (1) and the upper layer reinforcing mesh (2) are respectively formed by fixing criss-cross reinforcing steel bars, and the lower layer reinforcing mesh (1) and the upper layer reinforcing mesh (2) are fixedly connected through a plurality of vertical reinforcing steel bars.
3. A prestressed large-span concrete floor according to claim 1, characterized in that: the left anchoring seat (3) and the right anchoring seat (4) are steel structural members with steel bar fixing slotted holes or notches, and the left anchoring seat (3) and the right anchoring seat (4) are in a single shape or a long strip shape and are welded or anchored on the lower layer of steel bar mesh (1).
4. A prestressed large-span concrete floor according to claim 1, characterized in that: the connecting piece includes connecting block (6), first dead lever (7) and second dead lever (8), and the both ends of arc prestressing tendons (5) are fixed with connecting block (6) respectively, are fixed mutually with the one end of first dead lever (7) and second dead lever (8) on connecting block (6) respectively, and first dead lever (7) and second dead lever (8) are the V type and distribute, and the other end of first dead lever (7) and second dead lever (8) is fixed respectively on left anchor seat (3) or right anchor seat (4).
5. A prestressed large-span concrete floor according to claim 1, characterized in that: the connecting piece includes connecting block (6) and arc dead lever (9), and the both ends of arc prestressing tendons (5) are fixed with connecting block (6) respectively to connecting block (6) are fixed at the middle part of arc dead lever (9), and the both ends of arc dead lever (9) are fixed respectively on left anchor seat (3) or right anchor seat (4).
6. A prestressed large-span concrete floor according to claim 1, characterized in that: the length of the arc-shaped prestressed tendons (5) is larger than the linear distance between the installation parts of the left anchoring seat (3) and the right anchoring seat (4), and the height of the arc surfaces of the arc-shaped prestressed tendons (5) is smaller than or equal to the distance between the lower layer reinforcing mesh (1) and the upper layer reinforcing mesh (2).
7. A prestressed large-span concrete floor according to claim 1, characterized in that: the arc-shaped prestressed tendons (5) adopt twisted steel bars, indented steel wires or steel strands.
8. A prestressed large-span concrete floor according to claim 1, characterized in that: and a concrete pouring area (11) is arranged between the lower layer reinforcing mesh (1) and the upper layer reinforcing mesh (2) and in the surrounding area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222318290.7U CN218346525U (en) | 2022-09-01 | 2022-09-01 | Prestressed large-span concrete floor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222318290.7U CN218346525U (en) | 2022-09-01 | 2022-09-01 | Prestressed large-span concrete floor |
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| Publication Number | Publication Date |
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| CN218346525U true CN218346525U (en) | 2023-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222318290.7U Active CN218346525U (en) | 2022-09-01 | 2022-09-01 | Prestressed large-span concrete floor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117005679A (en) * | 2023-08-04 | 2023-11-07 | 泰昌建设有限公司 | Broad-width special-shaped beam structure and combined template thereof |
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2022
- 2022-09-01 CN CN202222318290.7U patent/CN218346525U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117005679A (en) * | 2023-08-04 | 2023-11-07 | 泰昌建设有限公司 | Broad-width special-shaped beam structure and combined template thereof |
| CN117005679B (en) * | 2023-08-04 | 2024-06-18 | 泰昌建设有限公司 | Broad-width special-shaped beam structure and combined template thereof |
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