CN221052968U - Stacked combined truss prestress laminated slab - Google Patents
Stacked combined truss prestress laminated slab Download PDFInfo
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- CN221052968U CN221052968U CN202322785273.9U CN202322785273U CN221052968U CN 221052968 U CN221052968 U CN 221052968U CN 202322785273 U CN202322785273 U CN 202322785273U CN 221052968 U CN221052968 U CN 221052968U
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- truss
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- steel bar
- steel
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 108
- 239000010959 steel Substances 0.000 claims abstract description 108
- 239000002131 composite material Substances 0.000 claims description 31
- 230000003014 reinforcing effect Effects 0.000 claims description 18
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 10
- 239000004567 concrete Substances 0.000 description 6
- 238000005452 bending Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011513 prestressed concrete Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model discloses a stacked combined truss prestress laminated slab, which relates to the field of prestress laminated slabs, and comprises prestress laminated slabs, wherein a plurality of groups of steel bar trusses are distributed on the prestress laminated slab, and adjacent groups of steel bar trusses are connected through at least one auxiliary beam; the steel bar truss comprises a plurality of first steel bars, and each first steel bar is distributed on the prestress superimposed sheet in a stacking mode. The steel bars are stacked, compared with the side-by-side steel bars, the steel bars are more reasonable, and can bear larger pressure without buckling deformation; simultaneously, the stacked steel bars and the auxiliary beams are combined, so that the transverse rigidity of the prestressed laminated slab can be effectively increased, and the crack in the direction is effectively avoided.
Description
Technical Field
The utility model relates to the field of prestressed superimposed sheets, in particular to a stacked combined truss prestressed superimposed sheet.
Background
The reinforced truss superimposed sheet is the form commonly used in assembled concrete building structure, comprises superimposed sheet and reinforced truss. In order to improve the applicability of the steel bar truss superimposed sheet, the prior art generally improves its structure from the viewpoints of the amount of steel bars used, the construction efficiency, etc., for example: CN216276379U discloses a steel bar truss prestressed concrete superimposed sheet, including prefabricated form, prefabricated form upper berth is equipped with concrete layer, and the equal embedding of concrete layer internal corner department is equipped with the concrete piece, and concrete layer left end lower part is connected with the concatenation bottom plate, is linear equidistant a plurality of fixed plates that are equipped with in the concatenation bottom plate, and concrete layer right-hand member upper portion is connected with the concatenation roof. CN218437695U discloses a variable cross-section composite truss prestressed laminated slab, which comprises a prestressed laminated slab, at least two groups of variable cross-section trusses are longitudinally and alternately distributed along the prestressed laminated slab, each variable cross-section truss comprises a plurality of truss reinforcing bars with different lengths, and each truss reinforcing bar is in an axisymmetric structure relative to the longitudinal central line of the prestressed laminated slab.
The prestressed superimposed sheet is generally provided with truss steel bars along the longitudinal direction, and the steel consumption of the common truss steel bars is large, so that certain resource waste is caused. The variable cross-section truss saves the steel consumption, but the upper chord steel bars are connected side by side, so that the manufacturing difficulty is high and the stability is poor. Moreover, adjacent truss steel bars of the prestress laminated slab are not related to each other, so that the prestress laminated slab is easy to bend and deform transversely due to the large-size laminated slab, and transverse cracks are generated when severe, so that the structural safety is affected.
Disclosure of utility model
Aiming at the defects of the prior art, the utility model aims to provide a stacked combined truss prestress laminated slab, and steel bars are more reasonable in a stacked mode compared with a side-by-side mode, and can bear larger pressure without buckling deformation; simultaneously, the stacked steel bars and the auxiliary beams are combined, so that the transverse rigidity of the prestressed laminated slab can be effectively increased, and the crack in the direction is effectively avoided.
In order to achieve the above object, the present utility model is realized by the following technical scheme:
The embodiment of the utility model provides a stacked combined truss prestress laminated slab, which comprises prestress laminated slabs, wherein a plurality of groups of steel bar trusses are distributed on the prestress laminated slabs, and adjacent groups of steel bar trusses are connected through at least one auxiliary beam; the steel bar truss comprises a plurality of first steel bars, and each first steel bar is distributed on the prestress superimposed sheet in a stacking mode.
As a further implementation, the lengths of the first reinforcing bars are the same or different.
As a further implementation manner, when the lengths of the first reinforcing bars are different, the difference between the lengths of the adjacent first reinforcing bars is 300 mm-3000 mm.
As a further implementation, the shortest first rebar is at least 300mm and the longest first rebar is no greater than 12m.
As a further implementation mode, the first steel bar is of an inverted U-shaped structure, and both ends of the first steel bar are provided with bending parts buried in the prestress laminated plates.
As a further implementation manner, when the steel bar truss includes three first steel bars, the cross sections of the first steel bars form triangular stacked distribution.
As a further implementation manner, when the steel bar truss comprises four first steel bars, the cross sections of the first steel bars are distributed in a pairwise side-by-side manner.
As a further implementation manner, the auxiliary Liang Caiyong is a second reinforcing bar, and the second reinforcing bar spans between and is fixed with two adjacent reinforcing bar trusses.
As a further implementation manner, the prestressed laminated slab is internally provided with transverse reinforcing steel bars and longitudinal reinforcing steel bars.
As a further implementation manner, the end part of the transverse reinforcing steel bar is a horizontal section or a bending section.
The beneficial effects of the utility model are as follows:
the steel bars are stacked, compared with the side-by-side type steel bars, the steel bars are more reasonable, and particularly under the working condition that the longitudinal steel bars are pressed, the steel bars can bear larger pressure without buckling deformation; the steel bar trusses are connected and fixed through the auxiliary beams, the integrity of the steel bars at the top of the prestressed laminated slab is improved, the transverse rigidity of the prestressed laminated slab can be effectively improved by combining the stacked steel bars with the auxiliary beams, and the crack generation in the direction is effectively avoided. .
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.
FIG. 1 is a perspective view of the present utility model according to one or more embodiments;
FIG. 2 is a side view of the present utility model according to one or more embodiments;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
Fig. 4 is a schematic diagram of a rebar truss distribution according to one or more embodiments of the utility model;
fig. 5 is a cross-sectional view of four first rebar according to one or more embodiments of the utility model.
The prestressed composite slab comprises a prestressed composite slab, a steel bar truss, an auxiliary beam, longitudinal steel bars, transverse steel bars and first steel bars, wherein the prestressed composite slab comprises a prestressed composite slab, the steel bar truss, the auxiliary beam, the longitudinal steel bars, the transverse steel bars and the first steel bars, and the prestressed composite slab comprises the prestressed composite slab, the steel bar truss, the longitudinal steel bars and the longitudinal steel bars.
Detailed Description
Embodiment one:
in an exemplary embodiment of the present utility model, as shown in fig. 1-3, a stacked composite truss prestressed composite slab is provided.
Because the top of the prestress laminated slab lacks transverse connection, the existing steel bar truss laminated slab is easy to bend under the condition of large span, and the service performance of the prestress laminated slab is affected.
Based on this, this embodiment provides a stacked composite truss prestressing force superimposed sheet, and the reinforcing bar adopts stacked type more reasonable than the side by side, and especially under the operating mode that longitudinal reinforcing bar pressurized, it can bear bigger pressure and not produce buckling deformation, and the cross-sectional area of longitudinal reinforcing bar has also been increased to the side by side arrangement, but the stability when its pressurized operating mode can be worsened. The prestress laminated slab has the two-way action of prestress and truss steel bars in the longitudinal direction, so that the prestress laminated slab has better strength in the direction, no crack can be generated, but only transverse distribution steel bars in the transverse direction act, the strength is lower, the crack is easily generated in the direction, the transverse rigidity of the prestress laminated slab can be effectively increased by combining stacked steel bars with auxiliary beams, and the crack generation in the direction is effectively avoided.
The stacked composite truss prestress laminated slab is described in detail with reference to the accompanying drawings.
In this embodiment, the span direction is taken as the longitudinal direction, and the perpendicular direction is taken as the transverse direction; the side of the prestress laminated slab 1, on which the steel bar truss 2 is arranged, is taken as the upper side.
As shown in fig. 1-3, the stacked combined truss prestress laminated slab comprises a prestress laminated slab 1, a steel bar truss 2 and an auxiliary beam 3, wherein transverse steel bars 5 and longitudinal steel bars 4 are distributed in the prestress laminated slab 1, wherein two ends of the transverse steel bars 5 can be horizontal sections, namely the whole transverse steel bars 5 are straight steel bars; or the two ends of the transverse reinforcing steel bar 5 are provided with bending sections which bend towards the upper side of the prestress laminated slab 1.
The specific form of the transverse bar 5 may be selected according to the actual installation requirements.
The top surface of the prestress laminated slab 1 is provided with a plurality of groups of steel bar trusses 2, and the steel bar trusses 2 are distributed at intervals along the transverse direction. The adjacent groups of steel bar trusses 2 are connected through auxiliary beams 3, and transverse stress is increased through a plurality of auxiliary beams 3. The auxiliary beams 3 can be arranged in one, two or other numbers, in particular according to the span requirement of the whole laminated slab.
Two adjacent groups of steel bar trusses 2 have a certain interval along the transverse direction, and the interval and the number of the steel bar trusses 2 can be set according to actual requirements. Fig. 1 shows a case where two sets of steel bar trusses 2 are provided:
The two groups of steel bar trusses 2 are connected through two auxiliary beams 3 which are arranged at intervals in the longitudinal direction, and the auxiliary beams 3 are arranged at the middle section of the steel bar trusses 2.
In this embodiment, the auxiliary beam 3 adopts a second reinforcing steel bar, and two ends thereof span the reinforcing steel bar truss 2 and are welded and fixed with the same. The second reinforcing bar is the reverse U type, and both ends are towards inboard bending, and in the prestressing force superimposed sheet 1 was buried in the second reinforcing bar both ends, increased joint strength.
As shown in fig. 4, each of the steel bar trusses 2 includes a plurality of first steel bars 6 having the same or different lengths, the first steel bars 6 are distributed in a stacked manner, specifically, the first steel bars 6 have a height which is high or low, and are attached to each other in the same cross section.
When the lengths of the first reinforcing steel bars 6 are different, the difference of the lengths of the adjacent first reinforcing steel bars 6 is 300-3000 mm, wherein the shortest first reinforcing steel bar 6 is at least 300mm, and the longest first reinforcing steel bar 6 is not more than 12m.
The number of the first steel bars 6 included in each group of steel bar trusses 2 can be two, three, four, etc. according to the actual construction scene. In this embodiment, each group of steel bar trusses 2 includes three first steel bars 6, as shown in fig. 3 and 4, one of the first steel bars 6 is located at the uppermost side, and the other two first steel bars 6 are located at the lower sides of the first steel bars 6, so as to form a triangular distribution form, thereby improving the stability of the whole steel bar truss 2.
It will be appreciated that in other embodiments, each set of steel trusses 2 may include four first steel bars 6, as shown in fig. 5, in the same cross section, two of the first steel bars 6 being disposed side by side on the upper side and two other being disposed side by side on the lower side.
The first steel bar 6 is of an inverted U-shaped structure, and the two ends of the first steel bar 6 are provided with bending parts buried in the prestress laminated slab 1.
The first steel bar 6 and the second steel bar in this embodiment are only used to distinguish between the steel bars at different positions, and do not limit the form of the steel bars.
The steel bar truss 2 of this embodiment contains many reinforcing bars that are stacked distribution to connect fixedly through assisting roof beam 3 between the adjacent group steel bar truss 2, increased the wholeness of prestressing force superimposed sheet 1 top reinforcing bar, can also avoid the superimposed sheet to take place to crooked under the large-span condition, simultaneously, owing to assist the existence of roof beam 3, make the longer that steel bar truss 2 can do, increase application scope.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. The stacked combined truss prestress laminated slab is characterized by comprising prestress laminated slabs, wherein a plurality of groups of steel bar trusses are distributed on the prestress laminated slabs, and adjacent groups of steel bar trusses are connected through at least one auxiliary beam; the steel bar truss comprises a plurality of first steel bars, and each first steel bar is distributed on the prestress superimposed sheet in a stacking mode.
2. A stacked composite truss prestressed composite slab as claimed in claim 1, wherein the lengths of the first reinforcing bars are the same or different.
3. The stacked composite truss prestressed composite slab of claim 2, wherein when the lengths of the first reinforcing bars are different, the difference in lengths of adjacent first reinforcing bars is 300mm to 3000mm.
4. A stacked composite truss prestressed composite slab as claimed in claim 3, wherein said shortest first rebar is at least 300mm and said longest first rebar is no more than 12m.
5. A stacked composite truss prestressed composite slab as claimed in claim 1 or claim 2, wherein when said steel truss includes three first steel bars, the cross-section of each first steel bar is formed into a triangular stacked distribution.
6. A stacked composite truss prestressed composite slab as claimed in claim 1 or claim 2, wherein when said steel truss includes four first steel bars, the cross sections of each first steel bar are arranged side by side.
7. A stacked composite truss prestressed composite slab as claimed in claim 1 or claim 2, wherein said first steel bar has an inverted U-shaped structure, and both ends of said first steel bar have bent portions buried in said prestressed composite slab.
8. A stacked composite truss prestressed composite slab as claimed in claim 1 or claim 2, wherein said secondary Liang Caiyong second rebar spans between and is secured to two adjacent rebar trusses.
9. The stacked composite truss prestressed composite slab of claim 1, wherein said prestressed composite slab incorporates transverse and longitudinal rebar.
10. The stacked composite truss prestressed composite slab of claim 9, wherein said transverse rebar ends in horizontal segments or in bent segments.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322785273.9U CN221052968U (en) | 2023-10-16 | 2023-10-16 | Stacked combined truss prestress laminated slab |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322785273.9U CN221052968U (en) | 2023-10-16 | 2023-10-16 | Stacked combined truss prestress laminated slab |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221052968U true CN221052968U (en) | 2024-05-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322785273.9U Active CN221052968U (en) | 2023-10-16 | 2023-10-16 | Stacked combined truss prestress laminated slab |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221052968U (en) |
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2023
- 2023-10-16 CN CN202322785273.9U patent/CN221052968U/en active Active
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