CN212026574U - Adopt building floor slab rebar structure of encorbelmenting of steel bar truss template - Google Patents
Adopt building floor slab rebar structure of encorbelmenting of steel bar truss template Download PDFInfo
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- CN212026574U CN212026574U CN201922238177.6U CN201922238177U CN212026574U CN 212026574 U CN212026574 U CN 212026574U CN 201922238177 U CN201922238177 U CN 201922238177U CN 212026574 U CN212026574 U CN 212026574U
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Abstract
The invention discloses a steel bar structure of an overhanging floor slab adopting a steel bar truss template, which solves the problems of difficult support of a support template, long construction period and high construction cost of a cast-in-situ overhanging reinforced concrete floor slab of the existing high-altitude overhanging building. Main building structure (8), the girder steel that is constituteed by parallel main building direction girder steel (9) and perpendicular main building direction girder steel (10) is encorbelmented in the outside of main building structure (8), be provided with parallel main building direction girder steel panel (11) on parallel main building direction girder steel (9), be provided with perpendicular main building direction girder steel panel (13) on perpendicular main building direction girder steel, fixed welding has the steel bar truss template on the girder steel cantilever, the steel bar truss template is by rectangle die block steel sheet (1) and along the fixed reinforcing bar framed bent that is provided with of left and right direction interval and constitutes, along the fixed reinforcing bar framed bent that is provided with of left and right direction interval on rectangle die block steel sheet. The work load of steel bar binding on site can be reduced by 60-70%.
Description
Technical Field
The invention relates to a concrete pouring template, in particular to a reinforcing steel bar structure and a reinforcing steel bar distribution method of a cast-in-place concrete floor slab of a high cantilever building.
Background
In the existing tower structure, a high-altitude large-span cantilever building structure is often designed, and the high-altitude large-span cantilever building is generally supported by a steel structure frame, and reinforced concrete beams, plates and outer frame beams are cast in situ; for a cast-in-place overhanging reinforced concrete floor, if the wood formwork construction of the traditional floor is adopted, the supporting strength of the bottom formwork of the cast-in-place reinforced concrete floor at the bottom layer of a high-position overhanging building cannot be met, in the prior art, a profiled steel sheet is adopted as the bottom formwork, but when the floor is encountered, the profiled formwork is difficult to be adopted; in addition, the construction by adopting the traditional template also has the defects of large workload of reinforcing steel bar binding on site, long construction period and high labor cost and material cost.
Disclosure of Invention
The invention provides a steel bar structure of an overhanging floor slab adopting a steel bar truss template and a reinforcement method, which solve the technical problems of difficult support of a support template of a cast-in-situ overhanging reinforced concrete floor slab of the existing high-altitude overhanging building, long construction period and high construction cost.
The invention solves the technical problems by the following technical scheme:
a steel bar structure of a cast-in-situ cantilever floor slab adopting a steel bar truss template comprises a main building structure, wherein a steel beam cantilever frame consisting of a parallel main building direction steel beam and a vertical main building direction steel beam is cantilevered at the outer side of the main building structure, a parallel main building direction steel beam panel is arranged on the parallel main building direction steel beam, a parallel main building direction steel beam steel supporting plate is arranged on an I-shaped steel vertical plate below the parallel main building direction steel beam panel, a vertical main building direction steel beam panel is arranged on the vertical main building direction steel beam, a vertical main building direction steel beam steel supporting plate is arranged on the I-shaped steel vertical plate below the vertical main building direction steel beam panel, the steel bar truss template is fixedly welded on the steel beam cantilever frame, the steel bar truss template consists of a rectangular bottom template steel plate and steel bar bent frames fixedly arranged at intervals along the left-right direction, the steel bar bent frames are fixedly arranged on the rectangular bottom template steel plate at intervals along the left-right, the reinforcing steel bar bent frame comprises two parallel lower chord reinforcing steel bars, two left and right connecting transverse bars, two support vertical bars, an upper chord reinforcing steel bar and a plurality of web member reinforcing steel bars, wherein the two parallel lower chord reinforcing steel bars are fixedly welded on a rectangular bottom die steel plate; the left end and the right end of the rectangular bottom die steel plate are both provided with plate edge hooks in a clip shape.
The steel bar truss formwork comprises a steel bar truss formwork, a rectangular bottom formwork steel plate, a parallel main building direction steel beam steel supporting plate, a vertical main building direction steel beam panel, a parallel main building direction additional upper steel bar, a vertical main building direction additional lower steel bar, a vertical main building direction additional upper steel bar, a vertical main building direction additional lower steel bar and a vertical main building direction additional lower steel bar, wherein support vertical ribs of the steel bar truss formwork are welded with the parallel main building direction steel beam steel supporting plate and the vertical main building direction steel beam steel supporting plate; the additional lower steel bars in the direction parallel to the main building are disconnected at the steel beam panel in the direction vertical to the main building, the disconnected end heads extend into the center line of the steel beam seat, the additional lower steel bars in the direction vertical to the main building are disconnected at the steel beam panel in the direction parallel to the main building, and the disconnected end heads extend into the center line of the steel beam seat.
The steel bar truss template system is a combined template which is formed by processing part of steel bars in a floor slab into a steel bar truss in a factory and welding the steel bar truss and a galvanized profiled steel sheet into a whole; during construction, the steel bar truss template can be directly laid on a steel beam or a reliable support, then, steel bar binding engineering is carried out, concrete can be poured, and the efficiency of floor slab construction is improved; rigidity provided by a traditional wood template or a profiled steel plate in the construction stage is changed into rigidity provided by a steel bar truss, larger and more reliable template bearing capacity can be provided, bottom support of the template is cancelled, the steel bar truss replaces stress steel bars of a part of the floor slab, the floor slab constructed by the steel bar truss template only needs to be provided with a small amount of additional steel bars, the work load of field steel bar binding can be reduced by 60-70%, and the construction period is further shortened.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view (i.e., a sectional view taken along a-a in fig. 1) illustrating the connection between the longitudinal plate edges and the steel beams of the steel-bar truss formwork according to the present invention;
fig. 3 is a schematic structural view (i.e., a sectional view taken along line B-B in fig. 1) illustrating the connection between the transverse plate edges and the steel beams of the steel-bar truss formwork according to the present invention;
fig. 4 is a schematic structural view of a steel bar truss formwork according to the present invention.
Detailed Description
The invention is described in detail below with reference to the accompanying drawings:
a steel bar structure of a cast-in-place cantilever floor slab adopting a steel bar truss template comprises a main building structure 8, a steel beam cantilever frame consisting of a parallel main building direction steel beam 9 and a vertical main building direction steel beam 10 is cantilevered at the outer side of the main building structure 8, a parallel main building direction steel beam panel 11 is arranged on the parallel main building direction steel beam 9, a parallel main building direction steel beam steel supporting plate 12 is arranged on an I-shaped steel vertical plate below the parallel main building direction steel beam panel 11, a vertical main building direction steel beam panel 13 is arranged on the vertical main building direction steel beam 10, a vertical main building direction steel beam steel supporting plate 14 is arranged on the I-shaped steel vertical plate below the vertical main building direction steel beam panel 13, the steel bar truss template is fixedly welded on the steel beam cantilever frame and consists of a rectangular bottom die steel plate 1 and steel bar bent frames fixedly arranged at intervals along the left and right directions, a reinforcing steel bar bent is fixedly arranged on the rectangular bottom die steel plate 1 at intervals along the left-right direction, the reinforcing steel bar bent is composed of two parallel lower chord reinforcing steel bars 2, two left-right connecting transverse bars, two support vertical bars, an upper chord reinforcing steel bar and a plurality of web member reinforcing steel bars, the two parallel lower chord reinforcing steel bars 2 are fixedly welded on the rectangular bottom die steel plate 1, the front transverse bar 3 is welded on the front end heads of the two parallel lower chord steel bars 2, the rear transverse bar is welded on the rear end heads of the two parallel lower chord steel bars 2, the left and right connecting front transverse ribs 3 are welded with front support vertical ribs 4, the left and right connecting rear transverse ribs are welded with rear support vertical ribs, an upper chord steel bar 5 is welded between the top end of the front support vertical bar 4 and the top end of the rear support vertical bar, and web member steel bars 6 are arranged between the two parallel lower chord steel bars 2 and the upper chord steel bars 5 at intervals; the left end and the right end of the rectangular bottom die steel plate 1 are provided with plate edge hooks 7 in a clip shape.
Vertical support ribs of a steel bar truss template are welded with a steel beam panel 11 parallel to the main building direction, a rectangular bottom die steel plate 1 of the steel bar truss template is respectively welded with a steel beam steel supporting plate 12 parallel to the main building direction and a steel beam steel supporting plate 14 vertical to the main building direction, additional upper steel bars 15 parallel to the main building direction are arranged among upper chord steel bars 5, additional lower steel bars 16 parallel to the main building direction are arranged among the lower ends of web member steel bars 6, additional upper steel bars 17 vertical to the main building direction are arranged among the additional upper steel bars 15 parallel to the main building direction, and additional lower steel bars 18 vertical to the main building direction are arranged among the additional lower steel bars 16 parallel to the main building direction; the parallel main-building direction additional lower reinforcement 16 is broken at the perpendicular main-building direction steel beam panel 13 and the broken end is extended beyond the center line of the steel beam seat, and the perpendicular main-building direction additional lower reinforcement 18 is broken at the parallel main-building direction steel beam panel 11 and the broken end is extended beyond the center line of the steel beam seat.
The rectangular bottom die steel plate 1 is a galvanized steel plate with the thickness of 0.5 mm, the square-needle-shaped plate edge hooks 7 arranged at the left end and the right end of the rectangular bottom die steel plate 1 are hand-held type plate edge hooks, the square-needle-shaped plate edge hooks 7 arranged at the left end of the rectangular bottom die steel plate 1 are buckles bent downwards after the plate surface is upwarped, and then folded back, the square-needle-shaped plate edge hooks arranged at the right end of the rectangular bottom die steel plate 1 are buckles bent upwards and then folded back, when the two rectangular bottom die steel plates are lapped, the buckles bent downwards after the left end of the second rectangular bottom die steel plate is upwarped and then folded back are lapped on the buckles bent upwards and then folded back of the first rectangular bottom die steel plate 1, and concrete poured above the buckles cannot leak from seams; the distance between the reinforcing steel bar bent at the left end and the left end side of the rectangular bottom die steel plate 1 is 100 mm, the distance between the reinforcing steel bar bent at the right end and the right end side of the rectangular bottom die steel plate 1 is also 100 mm, and the distance between two adjacent reinforcing steel bar bent is 188 mm.
A reinforcement distribution method for a steel bar structure of an overhanging floor slab adopting a steel bar truss template comprises the following steps:
firstly, before the steel bar trusses are installed, according to a plane layout pattern, a reference line is discharged from a steel supporting plate of a steel beam cantilever frame consisting of a steel beam 9 parallel to the main building direction and a steel beam 10 vertical to the main building direction, which is hung on the outer side of a main building structure 8, the reference line is aligned, a first steel bar truss template is installed, other steel bar truss templates are sequentially installed, the connection among the steel bar truss templates adopts a buckling mode, the plate edge of a clip shape is tightly hooked, and slurry leakage is prevented when concrete is poured;
secondly, aligning upper chord steel bars 5 of the steel bar truss template of the whole floor slab into a row, and preventing the adjacent spans from being staggered; the plate edge of the steel bar truss template is placed on the steel beam steel supporting plate, and the width of the plate edge of the steel bar truss template is not less than 50 mm, which is overlapped with the steel beam steel supporting plate;
thirdly, immediately performing spot welding on the vertical ribs of the end part support and the steel beam firmly after the steel bar truss template is in place, wherein the distance between welding spots is not more than 300 mm, and no gap is formed at the overlapping part of the plate end and the plate edge of the rectangular bottom die steel plate and the steel beam;
fourthly, additional upper steel bars 15 parallel to the main building direction are arranged among the upper chord steel bars 5, additional lower steel bars 16 parallel to the main building direction are arranged among the lower ends of the web member steel bars 6, additional upper steel bars 17 vertical to the main building direction are arranged among the additional upper steel bars 15 parallel to the main building direction, and additional lower steel bars 18 vertical to the main building direction are arranged among the additional lower steel bars 16 parallel to the main building direction; the additional lower steel bars 16 in the direction parallel to the main building are broken at the steel beam panel 13 in the direction vertical to the main building, the broken ends extend into the center line of the steel beam seat, the additional lower steel bars 18 in the direction vertical to the main building are broken at the steel beam panel 11 in the direction parallel to the main building, and the broken ends extend into the center line of the steel beam seat; the end part of the lower iron is as follows: 6 bending;
and fifthly, when the plate bars are bound, adopting splayed buckles or sequential buckles, pressing the screw heads into the plates, binding all the junctions of the additional upper and lower reinforcing steel bars of the floor slab, binding the junctions of the additional upper and lower reinforcing steel bars of the floor slab and the upper and lower chord reinforcing steel bars of the steel bar truss in a staggered way, and binding the junctions of the additional upper and lower reinforcing steel bars of the floor slab at least for 3 buckles.
The strength grades of the floor slab concrete of the cantilever buildings are C35, when the concrete of each cantilever building is poured, the pump pipe is connected out from the main building and poured from far to near, and when the steel bar truss floor slab is poured, the pump pipe support cannot directly fall on the bottom die steel plate of the steel bar truss template and is arranged in the range of the steel beam as much as possible; during pouring, the cloth can not be continuously distributed at the same position, the cloth is horizontally moved within the range of 2-3 meters, the virtual pavement thickness of the concrete is slightly larger than the plate thickness, before the concrete is poured, operation streets are erected, the spacing between the streets is 1.2-1.5 meters, and the hogging moment ribs are strictly controlled to be treaded down; when the concrete of the steel bar truss floor is poured, a flat plate vibrator is used for construction, and floating slurry appears on the surface of the concrete in the vibrating time until the concrete does not sink any more; after the top plate concrete is poured, before the concrete is initially set, a 4-6 m long aluminum alloy bar or a wood bar is used for leveling, a wood trowel is used for leveling, the times of compacting and leveling are not less than two times, and the secondary pressing surface is enhanced during the initial setting.
Claims (2)
1. A steel bar structure of a cantilever building floor slab adopting a steel bar truss template comprises a main building structure (8), a steel beam cantilever frame consisting of a parallel main building direction steel beam (9) and a vertical main building direction steel beam (10) is cantilevered at the outer side of the main building structure (8), a parallel main building direction steel beam panel (11) is arranged on the parallel main building direction steel beam (9), a parallel main building direction steel beam steel supporting plate (12) is arranged on an I-shaped steel vertical plate below the parallel main building direction steel beam panel (11), a vertical main building direction steel beam panel (13) is arranged on the vertical main building direction steel beam (10), a vertical main building direction steel beam steel supporting plate (14) is arranged on the I-shaped steel vertical plate below the vertical main building direction steel beam panel (13), and the steel bar truss template is fixedly welded on the steel beam cantilever frame and consists of a rectangular bottom die steel plate (1) and steel bar bent frames fixedly arranged at intervals along the left and right directions, a reinforcing steel bar bent is fixedly arranged on the rectangular bottom die steel plate (1) at intervals along the left-right direction, the reinforcing steel bar bent is composed of two parallel lower chord reinforcing steel bars (2), two left-right connecting transverse bars, two support vertical bars, an upper chord reinforcing steel bar and a plurality of web member reinforcing steel bars, the two parallel lower chord reinforcing steel bars (2) are fixedly welded on the rectangular bottom die steel plate (1), the front ends of two parallel lower chord steel bars (2) are welded with left and right connecting front transverse bars (3), the rear ends of two parallel lower chord steel bars (2) are welded with left and right connecting rear transverse bars, the left and right connecting front transverse ribs (3) are welded with front support vertical ribs (4), the left and right connecting rear transverse ribs are welded with rear support vertical ribs, upper chord steel bars (5) are welded between the top ends of the front support vertical bars (4) and the rear support vertical bars, web member steel bars (6) are arranged between the two parallel lower chord steel bars (2) and the upper chord steel bars (5) at intervals; both the left end and the right end of the rectangular bottom die steel plate (1) are provided with plate edge hooks (7) in a clip shape.
2. The structure of a steel bar of an overhanging floor slab using a steel bar truss template according to claim 1, it is characterized in that the vertical ribs of the support of the steel bar truss template are welded with a steel beam panel (11) parallel to the main building direction, the rectangular bottom die steel plate (1) of the steel bar truss template is respectively welded with a steel beam supporting plate (12) parallel to the main building direction and a steel beam supporting plate (14) vertical to the main building direction, additional upper steel bars (15) which are parallel to the main building direction are arranged among the upper chord steel bars (5), an additional lower steel bar (16) parallel to the main building direction is arranged between the lower ends of the web member steel bars (6), additional upper steel bars (17) vertical to the main building direction are arranged between the additional upper steel bars (15) parallel to the main building direction, additional lower steel bars (18) vertical to the main building direction are arranged between the additional lower steel bars (16) parallel to the main building direction; the additional lower steel bars (16) in the direction parallel to the main building are disconnected at the steel beam panel (13) in the direction vertical to the main building, the disconnected ends extend to exceed the center line of the steel beam seat, the additional lower steel bars (18) in the direction vertical to the main building are disconnected at the steel beam panel (11) in the direction parallel to the main building, and the disconnected ends extend to exceed the center line of the steel beam seat.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922238177.6U CN212026574U (en) | 2019-12-13 | 2019-12-13 | Adopt building floor slab rebar structure of encorbelmenting of steel bar truss template |
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| CN201922238177.6U CN212026574U (en) | 2019-12-13 | 2019-12-13 | Adopt building floor slab rebar structure of encorbelmenting of steel bar truss template |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110952651A (en) * | 2019-12-13 | 2020-04-03 | 北京建工集团山西建设有限公司 | Cantilever building floor slab steel bar structure adopting steel bar truss template and reinforcement method |
| CN114108915A (en) * | 2021-10-19 | 2022-03-01 | 中国航空规划设计研究总院有限公司 | Steel bar truss floor-bearing hollow composite board and construction method thereof |
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2019
- 2019-12-13 CN CN201922238177.6U patent/CN212026574U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110952651A (en) * | 2019-12-13 | 2020-04-03 | 北京建工集团山西建设有限公司 | Cantilever building floor slab steel bar structure adopting steel bar truss template and reinforcement method |
| CN110952651B (en) * | 2019-12-13 | 2024-05-28 | 北京建工集团山西建设有限公司 | Cantilever building floor slab reinforcing steel structure adopting reinforcing steel truss template and reinforcing steel bar arrangement method |
| CN114108915A (en) * | 2021-10-19 | 2022-03-01 | 中国航空规划设计研究总院有限公司 | Steel bar truss floor-bearing hollow composite board and construction method thereof |
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