CN214461611U - Hollow core slab - Google Patents
Hollow core slab Download PDFInfo
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- CN214461611U CN214461611U CN202023012132.6U CN202023012132U CN214461611U CN 214461611 U CN214461611 U CN 214461611U CN 202023012132 U CN202023012132 U CN 202023012132U CN 214461611 U CN214461611 U CN 214461611U
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Abstract
The utility model provides a hollow core slab belongs to the assembly type building element field. The prefabricated hollow slab comprises a slab top longitudinal prestressed steel strand rib, a slab top transverse rib, a slab bottom longitudinal prestressed steel strand rib, a slab bottom transverse rib, prefabricated concrete and a core mould; further comprising: steel connecting pieces are welded at the splicing edge positions of the two sides of the plate bottom and the plate top and on the inner sides of the plate top transverse rib and the plate bottom transverse rib respectively; the steel connecting piece comprises a transverse rib connecting end and a reserved welding end, the transverse rib connecting end is welded on the inner sides of the plate top transverse rib and the plate bottom transverse rib respectively, and the reserved welding end extends and is exposed out of the splicing edge or is attached to the splicing edge; after the construction is finished, the prefabricated hollow slabs which are mutually spliced are welded and connected at the steel connecting piece at the splicing position. The utility model discloses not only realize the connection of the hollow slab of concatenation department, realize the connection of the horizontal muscle in the hollow slab simultaneously for horizontal muscle after the connection together undertakes the load that concatenation department bore with indulging the muscle, reach two-way biography power, improve the wholeness of hollow slab and improve mechanical properties simultaneously.
Description
Technical Field
The utility model belongs to the assembled building element field, concretely relates to hollow core slab.
Background
The prefabricated building component is used for directly assembling the prefabricated components during building construction by prefabricating partial components, completes the construction of a building by matching with site construction, and can be applied to various construction modes such as houses, bridges, tunnels, underground engineering and the like. At present, most of fabricated components are precast concrete components, including beams, columns, tunnel supporting pieces, laminated slab bottom plates of floor slabs, hollow slabs and the like. The hollow slab is commonly used for building the floor slab, the dead weight of the floor slab can be effectively reduced, building materials are saved, and meanwhile, the sound insulation and heat insulation performance of a house is improved.
In the prior art, the precast hollow slab with the cast-in-place surface is cast in place after being lapped on a column or a beam, and the precast hollow slab without the cast-in-place surface is directly lapped on the column or the beam and then is subjected to subsequent construction. For precast hollow panels without cast-in-place surfaces, the connections between the panels are typically made by bolting the ends to increase the integrity of the floor. However, the connection mode of the bolts is not only that holes are needed to be punched at the end parts, the construction is complex, and the bolts only can play a role in connecting the two plates, so that the bending moment applied to the hollow plate cannot be evenly distributed, and the mechanical property of the prefabricated hollow plate cannot be improved.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned defect among the prior art or not enough, the utility model aims at providing a hollow core slab, through welding the steel connecting piece on the horizontal muscle of the board end and the board top both sides concatenation limit position department at hollow core slab, when carrying out the construction, weld the steel connecting piece on the corresponding position department of two hollow core slabs that will splice together, make the horizontal muscle of two hollow core slabs realize connecting, thereby make the atress of hollow core slab tip share between with indulging muscle and horizontal muscle simultaneously, improve hollow core slab's wholeness, improve mechanical properties simultaneously.
In order to achieve the above object, the embodiment of the present invention adopts the following technical solutions:
the embodiment of the utility model provides a precast hollow slab, which comprises a slab top longitudinal prestressed steel strand bar, a slab top transverse bar, a slab bottom longitudinal prestressed steel strand bar, a slab bottom transverse bar, precast concrete and a core mould; its characterized in that, the hollow core slab structure still includes: steel connecting pieces are welded at the splicing edge positions of the two sides of the plate bottom and the plate top and on the inner sides of the plate top transverse rib and the plate bottom transverse rib respectively;
the steel connecting piece comprises a transverse rib connecting end and a reserved welding end, wherein the transverse rib connecting end is welded on the inner sides of the plate top transverse rib and the plate bottom transverse rib respectively, and the reserved welding end extends and is exposed out of the splicing edge or attached to the splicing edge;
after the construction is finished, the prefabricated hollow slabs which are mutually spliced are welded and connected at the steel connecting pieces corresponding to the splicing positions.
As a preferred embodiment of the utility model, the length of steel connecting piece is isometric with the concatenation limit, or evenly divide into a plurality of sections, and the segment number is the same with horizontal muscle quantity, and each section steel connecting piece corresponds to a horizontal muscle.
As a preferred embodiment of the present invention, the steel connecting member is a T-shaped steel, wherein a longitudinal portion of the T-shaped steel is the transverse bar connecting end; the transverse part of the T-shaped steel is the reserved welding end.
As a preferred embodiment of the present invention, the steel connecting member is a bevel steel connecting member; the long limb of the oblique angle steel connecting piece connected to the plate top is used as a transverse rib connecting end and is welded with the end parts of all the transverse ribs on the plate top, which are positioned on the splicing edges, at the same time, the short limb is used as a reserved welding end and is attached to the splicing edges and extends out of the central axis of the hollow plate, and the oblique edge of the short limb and the non-splicing edge of the prefabricated hollow plate are cut into a groove; the long limb of connecting the oblique corner steel connecting piece at the bottom of the board is located the tip welded connection on concatenation limit as horizontal muscle link with horizontal muscle at the bottom of all boards simultaneously, short limb as reserve the welding end, laminate in the concatenation limit extends to hollow slab center pin is outer, and the bevel edge of short limb and the non-concatenation limit of prefabricated hollow slab cut out the groove.
As a preferred embodiment of the utility model, the length of hypotenuse angle steel connecting piece is isometric with the concatenation limit, or evenly divide into a plurality of sections, and the segment number is the same with horizontal muscle quantity, and each section steel connecting piece corresponds to a horizontal muscle.
As a preferred embodiment of the present invention, the steel connecting member is a straight-side angle steel connecting member; the long limb of the straight-side angle steel connecting piece connected to the plate top is used as a transverse rib connecting end and is welded with the end parts of all the transverse ribs on the plate top, which are positioned on the splicing edges, and the short limb is used as a reserved welding end, extends towards the central axis direction of the hollow plate and is attached to the splicing edges, and a groove is formed from the short limb to the outside and from the non-splicing edges; the long limb of the straight flange angle steel connecting piece connected at the bottom of the plate is connected as a transverse rib connecting end, and is simultaneously connected with the end part of all plate bottom transverse ribs positioned on the splicing edge in a welding mode, the short limb extends and is attached to the splicing edge in the central shaft direction of the hollow plate as a reserved welding end, and a groove is formed by the short limb outwards and the non-splicing edge.
As a preferred embodiment of the utility model, the steel connecting piece is a steel plate, and comprises a transverse bar connecting end and a reserved welding end; the transverse rib connecting end is welded and connected with the end parts of all the plate top transverse ribs on the splicing edges, and the reserved welding end extends to the edges of the splicing edges; the welding connection ends at the top and the bottom of the plate, and the middle parts of the two connection ends are flush with the edges of the splicing edges, and the outward parts of the connection ends are exposed out of the hollow precast slab.
The utility model discloses following beneficial effect has:
through the welding that corresponds steel connecting piece 6 to different hollow core slab concatenation departments, not only realize the connection of the hollow slab of concatenation department, realize the connection of horizontal muscle in the hollow slab simultaneously for horizontal muscle after the connection together undertakes the load that concatenation department bore with indulging the muscle, reaches two-way biography power, improves the wholeness of hollow slab and improves mechanical properties simultaneously, guarantees the security of building.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural view of the hollow core slab of the present invention;
FIG. 2 is a schematic view of the steel connection of FIG. 1;
FIG. 3 is a cross-sectional view of a prefabricated hollow core slab according to a first embodiment of the present invention;
FIG. 4 is a cross-sectional view of a prefabricated hollow core slab according to a second embodiment of the present invention;
fig. 5 is a sectional view of a prefabricated hollow slab according to a third embodiment of the present invention.
Description of reference numerals:
1-prestressed longitudinal steel strands on the plate top; 2-transverse ribs on the plate top; 3-prestressed steel strands longitudinally at the bottom of the plate; 4-transverse ribs at the bottom of the plate; 5-precast concrete; 6-plate top steel connecting piece; 7-steel connecting piece at the bottom of the plate; 61-a transverse rib connecting end of the steel connecting piece on the plate top; 62-reserved welding ends of the steel connecting pieces on the plate top; 71-a transverse rib connecting end of the steel connecting piece at the bottom of the plate; 72-reserved welding ends of the steel connecting pieces at the bottoms of the plates; 8-splicing edges.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The utility model discloses embodiment provides a hollow core slab, hollow core slab among the prior art includes that vertical prestressing force strand reinforcing 3 at the bottom of the vertical prestressing force strand reinforcing 1 of board top, the horizontal muscle 2 of board top, the board, horizontal muscle 4 at the bottom of the board, precast concrete 5 and mandrel 9. Based on the prefabricated hollow slab structure, as shown in fig. 1, the utility model respectively welds the slab top steel connecting piece 6 and the slab bottom steel connecting piece 7 at the splicing edge positions of the slab bottom and both sides of the slab top, and at the inner sides of the slab top transverse rib 2 and the slab bottom transverse rib 4; during the construction, through corresponding board top steel connecting piece 6 to different hollow core slab concatenation departments, the welding of steel connecting piece 7 at the bottom of the board, not only realize the connection of the hollow slab of concatenation department, realize the connection of horizontal muscle 2 in hollow slab inner panel top and the horizontal muscle 4 at the bottom of the board simultaneously, make the horizontal muscle 4 and the vertical prestressing force strand bar 1 in board top at the bottom of the board top after connecting, the vertical prestressing force strand bar 3 together undertakes the load that concatenation department bore at the bottom of the board, reach two-way biography power, improve the wholeness of hollow slab and improve mechanical properties simultaneously, guarantee the security of building.
As shown in fig. 2, the steel connecting member 6(7) includes a transverse rib connecting end 61(71) and a reserved welding end 62(72), wherein the transverse rib connecting end 61(71) is welded to the inner sides of the plate top transverse rib 2 and the plate bottom transverse rib 4, respectively, and the reserved welding end extends 62(72) and is exposed out of the splicing edge 8 or attached to the splicing edge 8. In terms of length, the steel connecting piece 6 is equal to the splicing edge 8 in length, or is evenly divided into a plurality of sections, the number of the sections is the same as that of the transverse ribs, and each section of the steel connecting piece 6(7) corresponds to one transverse rib 2 (4). The steel connecting piece 6(7) can adopt various different cross-sectional shapes according to actual conditions. Such as straight angle steel, T-section steel, or steel plate. FIG. 2 is a T-shaped steel as an example.
The following provides a detailed description of the hollow core slab according to the present invention by way of several specific examples.
First embodiment
As shown in fig. 3, the hollow core slab provided in this embodiment includes a slab top longitudinal prestressed twisted steel bar 1, a slab top transverse bar 2, a slab bottom longitudinal prestressed twisted steel bar 3, a slab bottom transverse bar 4, precast concrete 5, and a core mold 9, and further includes a bevel angle steel connecting piece 6 for the slab top transverse bar 2, and a bevel angle steel connecting piece 7 for the slab bottom transverse bar 4, where the slab top bevel angle steel connecting piece 6, the slab bottom bevel angle steel connecting piece 7 are equal in length to a splicing edge 8. The long limb of the oblique corner steel connecting piece 6 serves as a transverse rib connecting end 61 and is welded and connected with the end parts, located on the splicing edges 8, of all the plate top transverse ribs 2, the short limb serves as a reserved welding end 62 and is attached to the splicing edges 8 and extends out of the central axis of the hollow plate, and a bevel edge of the short limb and the non-splicing edge of the prefabricated hollow plate are provided with a groove; the long limb of hypotenuse angle steel connecting piece 7 is as horizontal muscle link 71, lies in the tip welded connection on concatenation limit 8 with horizontal muscle 4 at the bottom of all boards simultaneously, and the short limb is as reserving weld end 72, laminate in concatenation limit 8 extends to hollow slab center axle is outer, and the bevel edge of short limb and the non-concatenation limit of prefabricated hollow slab cut out the groove.
When the prefabricated hollow slab is constructed, the two hollow slabs are spliced, after splicing edges are aligned, short limbs of the corresponding slab top oblique angle steel connecting piece 6 are butted, and the short limbs on two sides are welded from an upper slope; the short limbs of the corresponding plate bottom bevel edge angle steel connecting piece 7 are butted, and the short limbs on the two sides are welded from the lower slope.
Through board top bevel angle steel connecting piece 6, board bottom bevel angle steel connecting piece 7, realize being connected of board and board, realize the connection of the horizontal muscle in the inboard simultaneously, bear the shear force between the plate, the reinforcing wholeness makes the plate atress jointly.
The prefabrication process of the prefabricated hollow slab comprises the following steps:
s11, installing and cleaning a template and brushing an isolating agent;
s12, manufacturing a steel bar, namely welding an angle steel with an oblique side and a transverse steel bar;
s13, tensioning the bottom prestressed steel strand;
s14, arranging bottom transverse steel bars with oblique angle steel;
s15, mounting a hollow core mold;
s16, arranging top transverse steel bars with angle steel with oblique edges;
s17, tensioning the top prestressed steel strand;
s18, pouring and maintaining concrete;
s19, loosening the steel strand.
The process of on-site construction of the prefabricated hollow slab after prefabrication is as follows:
s21, hoisting and placing the prefabricated hollow slab on a beam;
s22, welding short limbs of the angle steel of the inclined edges of the two hollow core slabs to enable the hollow core slabs to be spliced.
Second embodiment
As shown in fig. 4, the hollow slab provided in this embodiment includes a slab top longitudinal prestressed twisted steel bar 1, a slab top transverse bar 2, a slab bottom longitudinal prestressed twisted steel bar 3, a slab bottom transverse bar 4, precast concrete 5, and a core mold 9, and further includes a straight-side angle steel connector 6 for the slab top transverse bar 2, and a straight-side angle steel connector 7 for the slab bottom transverse bar 4, where the slab top straight-side angle steel connector 6 and the slab bottom straight-side angle steel connector 7 include a plurality of sections, the length of each section of connector is greater than the diameter of a transverse bar, and the number of the sections is the same as the number of the transverse bars. The long limb of the straight-side angle steel connecting piece 6 serves as a transverse rib connecting end 61 and is welded with the end parts of all the plate top transverse ribs 2 positioned on the splicing edges 8, the short limb serves as a reserved welding end 62, extends towards the central axis direction of the hollow plate and is attached to the splicing edges 8, and a groove is formed from the short limb to the outside and from the non-splicing edges; the long limb of the straight-side angle steel connecting piece 7 serves as a transverse rib connecting end 71 and is welded and connected with the end parts, located on the splicing edges 8, of all the plate bottom transverse ribs 4, the short limb serves as a reserved welding end 72 and extends towards the central axis direction of the hollow plate and is attached to the splicing edges 8, and a groove is formed from the short limb outwards and the non-splicing edges.
When the prefabricated hollow slab is constructed, the two hollow slabs are spliced, after splicing edges are aligned, short limbs of the corresponding slab top straight-edge angle steel connecting piece 6 are butted, and the short limbs on two sides are welded from an upper slope; the short limbs of the corresponding straight-edge angle steel connecting pieces 7 at the plate bottom are butted, and the short limbs at the two sides are welded from the lower slope.
The plate top straight-edge angle steel connecting piece 6 and the plate bottom straight-edge angle steel connecting piece 7 are used for realizing the connection of the plates, meanwhile, the connection of the transverse ribs in the plates is realized, the shearing force between the plates is borne, the integrity is enhanced, and the plates are stressed together.
The prefabrication process of the prefabricated hollow slab is basically the same as that of the prefabrication process of the prefabricated hollow slab in the first embodiment, and the prefabrication process of the prefabricated hollow slab is different in the welding mode of straight-edge angle steel and transverse steel bars, wherein the right angle of the angle steel in the first embodiment is outward, and the right angle of the angle steel in the first embodiment is inward. And in the field construction process, welding the short limb at the groove.
Third embodiment
As shown in fig. 5, the hollow core slab provided by this embodiment includes a slab top longitudinal prestressed twisted steel bar 1, a slab top transverse bar 2, a slab bottom longitudinal prestressed twisted steel bar 3, a slab bottom transverse bar 4, precast concrete 5 and a core mold 9, and further includes a steel plate connecting piece 6 for the slab top transverse bar 2 and a steel plate connecting piece 7 for the slab bottom transverse bar 4, the slab top steel plate connecting piece 6 and the slab bottom steel plate connecting piece 7 include a plurality of sections, and the length of each section of connecting piece is greater than the sum of 2 times of the diameter of the transverse bar and the distance, and two identical transverse bars are welded on each section of steel bar, and the transverse bars are not repeatedly welded on different steel plate sections. The steel plate connecting piece 6 is divided into two parts, and comprises a transverse rib connecting end 61 and a reserved welding end 62, wherein the transverse rib connecting end 61 is simultaneously welded with the end parts of all plate top transverse ribs 2 positioned on the splicing edges 8, and the reserved welding end 62 extends to the edges of the splicing edges; the steel plate connecting piece 7 comprises a transverse rib connecting end 71 and a reserved welding end 72, and is welded and connected with the end parts of all the plate bottom transverse ribs 4 positioned on the splicing edges 8; the plate top welding connecting end 62 and the plate bottom welding connecting end 72, the middle part of the two connecting ends is flush with the edge of the splicing edge, and the outward parts of the plate top welding connecting end 62 and the plate bottom welding connecting end 72 are exposed out of the hollow precast slab.
When right during the hollow core slab construction, splice two hollow core slabs, the concatenation limit aligns the back, and the butt joint is reserved to the steel sheet that corresponds, welds the butt joint in the part that exposes respectively to the butt joint weld end.
The prefabrication process of the hollow precast slab is basically the same as that of the prefabrication process of the first embodiment, the difference is that the welding modes of the steel plate and the transverse steel bar are different, the transverse steel bar is welded with the transverse bar connecting end of the steel plate during welding, and the remaining part is a reserved welding end. And in the field construction process, welding the butted reserved welding ends at the exposed openings.
The above description is only a preferred embodiment of the invention and is intended to illustrate the technical principles applied. It will be understood by those skilled in the art that the scope of the present invention is not limited to the specific combination of the above-mentioned features, but also covers other embodiments formed by any combination of the above-mentioned features or their equivalents without departing from the spirit of the present invention. For example, the above features and (but not limited to) technical features having similar functions disclosed in the present invention are mutually replaced to form the technical solution.
Claims (7)
1. A precast hollow slab comprises a slab top longitudinal prestressed steel strand, a slab top transverse bar, a slab bottom longitudinal prestressed steel strand, a slab bottom transverse bar, precast concrete and a core mold; its characterized in that, the hollow core slab structure still includes: steel connecting pieces are welded at the splicing edge positions of the two sides of the plate bottom and the plate top and on the inner sides of the plate top transverse rib and the plate bottom transverse rib respectively;
the steel connecting piece comprises a transverse rib connecting end and a reserved welding end, wherein the transverse rib connecting end is welded on the inner sides of the plate top transverse rib and the plate bottom transverse rib respectively, and the reserved welding end extends and is exposed out of the splicing edge or attached to the splicing edge;
after the construction is finished, the prefabricated hollow slabs which are mutually spliced are welded and connected at the steel connecting pieces corresponding to the splicing positions.
2. The hollow slab as claimed in claim 1, wherein the steel connecting member has a length equal to the length of the splicing edge or is divided into a plurality of segments, the number of the segments is the same as the number of the transverse ribs, and each segment of the steel connecting member corresponds to one transverse rib.
3. The hollow core slab as claimed in claim 1, wherein the steel connecting member is a T-section steel, wherein a longitudinal portion of the T-section steel is the transverse rib connecting end; the transverse part of the T-shaped steel is the reserved welding end.
4. The hollow core slab of claim 1 wherein the steel connectors are mitre steel connectors; the long limb of the oblique angle steel connecting piece connected to the plate top is used as a transverse rib connecting end and is welded with the end parts of all the transverse ribs on the plate top, which are positioned on the splicing edges, at the same time, the short limb is used as a reserved welding end and is attached to the splicing edges and extends out of the central axis of the hollow plate, and the oblique edge of the short limb and the non-splicing edge of the prefabricated hollow plate are cut into a groove; the long limb of connecting the oblique corner steel connecting piece at the bottom of the board is located the tip welded connection on concatenation limit as horizontal muscle link with horizontal muscle at the bottom of all boards simultaneously, short limb as reserve the welding end, laminate in the concatenation limit extends to hollow slab center pin is outer, and the bevel edge of short limb and the non-concatenation limit of prefabricated hollow slab cut out the groove.
5. The hollow slab as claimed in claim 4, wherein the length of the angle steel connecting member is equal to the length of the splicing edge, or is divided into a plurality of sections, the number of the sections is the same as the number of the transverse ribs, and each section of the steel connecting member corresponds to one transverse rib.
6. The hollow core slab of claim 1, wherein the steel connectors are straight angle steel connectors; the long limb of the straight-side angle steel connecting piece connected to the plate top is used as a transverse rib connecting end and is welded with the end parts of all the transverse ribs on the plate top, which are positioned on the splicing edges, and the short limb is used as a reserved welding end, extends towards the central axis direction of the hollow plate and is attached to the splicing edges, and a groove is formed from the short limb to the outside and from the non-splicing edges; the long limb of the straight flange angle steel connecting piece connected at the bottom of the plate is connected as a transverse rib connecting end, and is simultaneously connected with the end part of all plate bottom transverse ribs positioned on the splicing edge in a welding mode, the short limb extends and is attached to the splicing edge in the central shaft direction of the hollow plate as a reserved welding end, and a groove is formed by the short limb outwards and the non-splicing edge.
7. The hollow core slab as claimed in claim 1, wherein the steel connecting member is a steel plate, the connecting end of the transverse bar is welded to the end of the transverse bar on the top of the slab at the splicing edge, and the welding end is extended to the edge of the splicing edge; the welding connection ends at the top and the bottom of the plate, and the middle parts of the two connection ends are flush with the edges of the splicing edges, and the outward parts of the connection ends are exposed out of the hollow precast slab.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202023012132.6U CN214461611U (en) | 2020-12-15 | 2020-12-15 | Hollow core slab |
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| CN202023012132.6U CN214461611U (en) | 2020-12-15 | 2020-12-15 | Hollow core slab |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117386061A (en) * | 2023-12-11 | 2024-01-12 | 山东汇通建设集团有限公司 | Large-span concrete roof for basement |
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2020
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117386061A (en) * | 2023-12-11 | 2024-01-12 | 山东汇通建设集团有限公司 | Large-span concrete roof for basement |
| CN117386061B (en) * | 2023-12-11 | 2024-03-19 | 山东汇通建设集团有限公司 | Method for assembling large-span concrete roof for basement |
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