CN111877626A - Overhead laminated slab construction structure and construction method - Google Patents
Overhead laminated slab construction structure and construction method Download PDFInfo
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- CN111877626A CN111877626A CN202010886084.9A CN202010886084A CN111877626A CN 111877626 A CN111877626 A CN 111877626A CN 202010886084 A CN202010886084 A CN 202010886084A CN 111877626 A CN111877626 A CN 111877626A
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- 238000010276 construction Methods 0.000 title claims abstract description 38
- 239000010410 layer Substances 0.000 claims abstract description 102
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 81
- 239000010959 steel Substances 0.000 claims abstract description 81
- 238000000034 method Methods 0.000 claims abstract description 13
- 239000002344 surface layer Substances 0.000 claims abstract description 9
- 239000004567 concrete Substances 0.000 claims description 31
- 239000011449 brick Substances 0.000 claims description 26
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 25
- 238000013461 design Methods 0.000 claims description 15
- 238000004873 anchoring Methods 0.000 claims description 9
- 230000010485 coping Effects 0.000 claims description 9
- 239000011083 cement mortar Substances 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 2
- 238000004904 shortening Methods 0.000 abstract description 2
- 230000003014 reinforcing effect Effects 0.000 description 11
- 238000010586 diagram Methods 0.000 description 7
- 238000009415 formwork Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- -1 formwork battens Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000009436 residential construction Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
- E04B5/17—Floor structures partly formed in situ
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/02—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls built-up from layers of building elements
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/56—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/84—Walls made by casting, pouring, or tamping in situ
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
- E04C5/02—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2103/00—Material constitution of slabs, sheets or the like
- E04B2103/02—Material constitution of slabs, sheets or the like of ceramics, concrete or other stone-like material
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2103/00—Material constitution of slabs, sheets or the like
- E04B2103/06—Material constitution of slabs, sheets or the like of metal
Abstract
The invention discloses an overhead laminated slab construction structure and a construction method, wherein the structure comprises the following steps: the shear wall or the frame column and the ridge wall are arranged above the top plate of the underground garage, and the shear wall or the frame column and the ridge wall can be used as inner walls or outer walls; the laminated plate frame is arranged above the shear wall or the frame column and the ridge wall; wall support steel bars and laminated slab upper layer steel bars are reserved in the middle of the shear wall or the frame column, and a wall support is arranged on the wall support steel bars; the top of the ridge wall is as high as the top of the wall support, and the superposed plate is erected on the ridge wall and the wall support; the cast-in-place layer through long steel bars are laid above the laminated slab, the upper layer steel bars of the laminated slab are connected with the cast-in-place layer through long steel bars, and the cast-in-place laminated slab surface layer is poured on the laminated slab, the upper layer steel bars of the laminated slab and the cast-in-place layer through long steel bars. The invention achieves the effects of saving materials, simplifying the working procedures and shortening the construction period, and is matched with the use of the laminated slab, so that the assembled building is better popularized.
Description
Technical Field
The invention relates to the field of assembly type building engineering construction, in particular to an overhead laminated slab construction structure and a construction method.
Background
In recent years, in building construction, particularly in residential construction, it is generally necessary to provide an overhead layer (interlayer) between one floor of a building and an underground garage, in order to prevent moisture, avoid backfilling, reduce the self weight of the building, and the like. The main technical difficulty of the overhead layer construction lies in the construction of an overhead layer top plate (overhead plate), and because the overhead layer usually has a layer height of only about 1m, the formwork of the overhead layer is very inconvenient to erect and dismantle. At present, the construction of the overhead plate is generally provided with the following steps:
(1) and (5) casting the overhead plate in situ. A formwork support frame is erected on the top plate of the basement, and the overhead beam or the brick masonry is used as an overhead plate end or a plate middle support in cooperation with a shear wall and the top plate of the basement, so that the overhead plate cast-in-place construction is realized. The method has the defects that after the overhead plate is poured, the plate bottom support system is difficult to remove, even cannot be removed, and a large amount of turnover materials such as formwork battens, steel pipe fasteners and the like are wasted.
(2) And a prefabricated overhead plate is arranged at the rear. The brick masonry is used as an overhead layer ridge wall, and a prefabricated plate is directly installed on the upper portion of the ridge wall to serve as an overhead layer top plate. The disadvantage of this approach is that the slab ends cannot withstand the bending moment after the construction of the precast slabs is completed and the slab joints between the precast slabs need to be additionally treated.
(3) And backfilling the top plate of the basement to the height position of the ground of the first floor, and then directly constructing the first floor on the backfilled soil. The dead weight of the building can be increased by the aid of the design, and the design of the top plate of the basement is combined with the weight of the backfill soil to increase bearing capacity and cost.
Disclosure of Invention
The invention aims to solve the technical problem of providing an overhead laminated slab construction structure and an overhead laminated slab construction method aiming at the defects in the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the invention provides an overhead laminated slab construction structure, which comprises: a top plate of the ground reservoir, a shear wall or a frame column, a ridge wall, a laminated slab and an overhead layer; wherein:
the shear wall or the frame column and the ridge wall are arranged above the top plate of the underground garage, and the shear wall or the frame column and the ridge wall can be used as inner walls or outer walls; the laminated plate frame is arranged above the shear wall or the frame column and the ridge wall, and an overhead layer is formed between the laminated plate and the top plate of the ground warehouse;
wall support steel bars and laminated slab upper layer steel bars are reserved in the middle of the shear wall or the frame column, and a wall support is arranged on the wall support steel bars; the top of the ridge wall is as high as the top of the wall support, the laminated plate frame is arranged on the ridge wall and the wall support, and the laminated plate is positioned between the wall support and the upper-layer steel bars of the laminated plate;
the cast-in-place layer through long steel bars are laid above the laminated slab, the upper layer steel bars of the laminated slab are connected with the cast-in-place layer through long steel bars, and the cast-in-place laminated slab surface layer is poured on the laminated slab, the upper layer steel bars of the laminated slab and the cast-in-place layer through long steel bars.
Furthermore, when the ridge wall is used as an inner wall, the ridge wall is a brick masonry ridge wall, a concrete coping is arranged at the top of the brick masonry ridge wall, and the superposed plate frame is arranged above the concrete coping at the top of the ridge wall; both sides of the ridge wall are the overhead layers.
Furthermore, when the ridge wall is used as an outer wall, the ridge wall is a cast-in-place ridge wall, the cast-in-place ridge wall steel bars are arranged in the ridge wall, the upper layer steel bars of the laminated slab are reserved at the top of the ridge wall, the laminated slab is erected above the cast-in-place ridge wall, and the laminated slab is located between the ridge wall and the upper layer steel bars of the laminated slab; the outer side of the ridge wall is provided with backfill, and the inner side is an overhead layer.
Furthermore, when the shear wall or the frame column is used as an inner wall, wall support reinforcing steel bars and laminated slab upper layer reinforcing steel bars are reserved on two sides of the middle part of the shear wall or the frame column, and wall supports are arranged on the wall support reinforcing steel bars on the two sides; and both sides of the shear wall or the frame column are the overhead layers.
Furthermore, when the shear wall or the frame column is used as an outer wall, only the middle part of the inner side of the shear wall or the frame column is reserved with wall support reinforcing steel bars and laminated slab upper layer reinforcing steel bars, and the wall support is arranged on the wall support reinforcing steel bars on the inner side; and backfill is arranged on the outer side of the shear wall or the frame column, and an overhead layer is arranged on the inner side of the shear wall or the frame column.
Furthermore, when the brick masonry ridge wall is adopted as the ridge wall, a reserved hole is also formed in the middle of the brick masonry ridge wall.
The invention provides a construction method of an overhead laminated slab construction structure, which comprises the following steps:
firstly, carrying out a deepened design of an overhead layer according to a floor plan of a building, wherein the inner wall of a ridge wall adopts a brick masonry ridge wall and a concrete coping structure, the outer wall of the ridge wall adopts a cast-in-place concrete structure with steel bars reserved inside, and the steel bars on the upper layer of a laminated slab are reserved at the top of the cast-in-place ridge wall; the method comprises the following steps that the size span of a laminated slab is divided according to actual engineering conditions by means of the division of the laminated slab, and meanwhile reserved holes and pre-buried pipelines of the laminated slab are considered;
secondly, pouring a first-layer structure, namely a shear wall or a frame column, wherein when the shear wall or the frame column is used as an outer wall, only the inner side is reserved with wall body support steel bars and laminated slab upper-layer steel bars, and when the shear wall or the frame column is used as an inner wall, the two sides are both reserved with wall body support steel bars and laminated slab upper-layer steel bars;
step three, building an internal brick masonry ridge wall, and pouring a ridge wall at the outer wall part and a wall body support of the shear wall; positioning and paying off are carried out according to a deepened design drawing before the ridge wall is built or poured, the elevation of the top finished surface of the ridge wall is the elevation of the bottom of the laminated slab, and correspondingly, the elevation of the top finished surface of the wall body support is also the elevation of the bottom of the laminated slab; removing the wall body support and the cast-in-place ridge wall template after the wall body support and the cast-in-place ridge wall concrete reach certain strength; reserving a hole at the position of the overhaul channel according to the overhaul requirements of the hydroelectric installation pipeline when the brick masonry ridge wall is built;
step four, mounting the laminated slab, and plugging a gap between the laminated slab and the wall body support by using cement mortar; reserving anchoring steel bars with hooks at the joint of the laminated slab at the top of the brick masonry ridge wall, wherein when the laminated slab is installed, the reserved steel bars of the laminated slab are crossed and anchored, and the horizontal direction of the laminated slab is not less than 100mm deep into the top of the ridge wall; a straight anchoring steel bar is reserved in the laminated slab at the wall body support, and the laminated slab horizontally penetrates into the wall body support for at least 100mm when being installed; determining the reserved length of the anchoring steel bar of the laminated slab according to a design drawing of the laminated slab; checking whether gaps exist between the laminated slab and the connecting part or not after the laminated slab is installed, and plugging the gap-containing part by using a proper amount of cement mortar;
binding upper-layer steel bars of the laminated slab; connecting the upper-layer steel bars of the reserved laminated slab at the support with the through long steel bars of the cast-in-place layer, wherein the steel bars are connected by lap welding or binding and lap joint according to the actual engineering condition;
sixthly, pouring upper-layer concrete of the laminated slab; before concrete pouring, checking the pre-buried pipelines and the reserved holes on the laminated slab, and pouring concrete on the surface layer of the cast-in-place laminated slab after confirming that the pre-buried pipelines and the reserved holes are correct;
and seventhly, periodically maintaining the newly poured concrete after pouring is finished.
The invention has the following beneficial effects: according to the construction structure and the construction method of the overhead laminated slab, the erection of the overhead layer template and the support is cancelled, the problem that the overhead layer template is not easy to dismantle in the traditional process is avoided, the effects of saving materials, simplifying the process and shortening the construction period are achieved, meanwhile, the engineering quality of the overhead slab can be guaranteed by integrally pouring the upper concrete of the laminated slab, and the assembled building can be better popularized by matching with the use of the laminated slab.
1. The overhead layer is constructed by combining the laminated slab and the ridge wall, the erection of an overhead layer template and a support can be cancelled, the problem that the overhead layer template is difficult to dismantle in the traditional process is avoided, the material is saved, the working procedure is simplified, and the construction period is shortened;
2. the characteristics of the laminated slab in the fabricated building are reasonably utilized, and the laminated slab surface layer is integrally cast, so that the problem of seam remaining by a rear prefabricated slab is avoided;
3. the joint treatment that this scheme provided is adopted to superimposed sheet and shear force wall or frame post handing-over department, is connected with superimposed sheet upper reinforcing bar with the reservation reinforcing bar, has solved the problem that rearmounted prefabricated plate board end can not bear the moment of flexure.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic view of an interior wall structure of a brick masonry ridge wall according to an embodiment of the present invention;
FIG. 2a is a schematic structural diagram of a shear wall or frame column outer wall node according to an embodiment of the present invention;
FIG. 2b is a schematic structural diagram of a shear wall or frame column outer wall node according to an embodiment of the present invention;
FIG. 3a is a schematic view of a shear wall or frame column inner wall node structure according to an embodiment of the present invention;
FIG. 3b is a schematic view of a shear wall or frame column inner wall node structure according to an embodiment of the present invention;
FIG. 4a is a schematic structural diagram of a ridge wall outer wall node according to an embodiment of the present invention;
FIG. 4b is a schematic structural diagram of a ridge wall outer wall node according to an embodiment of the present invention;
FIG. 5 is a schematic view of a cast-in-place layer steel bar binding structure according to an embodiment of the invention;
FIG. 6 is a schematic structural diagram of the cast-in-place composite slab surface layer pouring according to the embodiment of the invention;
FIG. 7 is a schematic diagram of a structure of a reserved hole of a ridge wall according to an embodiment of the present invention;
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The overhead laminated slab construction structure of the embodiment of the invention comprises: the system comprises a ground storehouse top plate 1, shear walls or frame columns 2, ridge walls 3, laminated slabs 4 and an overhead layer; wherein:
the shear wall or the frame column 2 and the ridge wall 3 are arranged above the top plate 1 of the basement, and both the shear wall or the frame column 2 and the ridge wall 3 can be used as inner walls or outer walls; the laminated slab 4 is erected above the shear wall or the frame column 2 and the ridge wall 3, and an overhead layer is formed between the laminated slab 4 and the top plate 1 of the ground warehouse;
wall support reinforcing steel bars 6 and laminated slab upper layer reinforcing steel bars 8 are reserved in the middle of the shear wall or the frame column 2, and wall supports 7 are arranged on the wall support reinforcing steel bars 6; the top of the ridge wall 3 is as high as the top of the wall support 7, the laminated slab 4 is erected on the ridge wall 3 and the wall support 7, and the laminated slab 4 is positioned between the wall support 7 and the upper-layer steel bars 8 of the laminated slab;
cast-in-place layer leads to long reinforcing bar 9 has been laid to superimposed sheet 4 top, and superimposed sheet upper strata reinforcing bar 8 leads to long reinforcing bar 9 with cast-in-place layer to be connected to pour cast-in-place superimposed sheet surface course 10 on superimposed sheet 4, superimposed sheet upper strata reinforcing bar 8 and cast-in-place layer lead to long reinforcing bar 9.
When the ridge wall 3 is used as an inner wall, the ridge wall 3 is a brick masonry ridge wall, a concrete coping 5 is arranged at the top of the brick masonry ridge wall, and a laminated slab 4 is erected above the concrete coping 5 at the top of the ridge wall 3; both sides of the ridge wall 3 are both the overhead layers.
When the ridge wall 3 is used as an outer wall, the ridge wall 3 is a cast-in-place ridge wall, cast-in-place ridge wall reinforcing steel bars 11 are arranged in the ridge wall 3, laminated slab upper layer reinforcing steel bars 8 are reserved at the top of the ridge wall, the laminated slab 4 is erected above the cast-in-place ridge wall 3, and the laminated slab 4 is located between the ridge wall 3 and the laminated slab upper layer reinforcing steel bars 8; the outer side of the ridge wall 3 is provided with backfill, and the inner side is an overhead layer.
When the shear wall or the frame column 2 is used as an inner wall, wall support reinforcing steel bars 6 and laminated slab upper layer reinforcing steel bars 8 are reserved on two sides of the middle part of the shear wall or the frame column 2, and wall supports 7 are arranged on the wall support reinforcing steel bars 6 on the two sides; the two sides of the shear wall or the frame column 2 are both provided with an overhead layer.
When the shear wall or the frame column 2 is used as an outer wall, only the middle part of the inner side of the shear wall or the frame column 2 is reserved with a wall support reinforcing steel bar 6 and a laminated slab upper layer reinforcing steel bar 8, and a wall support 7 is arranged on the wall support reinforcing steel bar 6 at the inner side; the outer side of the shear wall or the frame column 2 is provided with backfill, and the inner side is an overhead layer.
The construction method of the overhead laminated slab construction structure provided by the embodiment of the invention comprises the following steps of:
firstly, carrying out a deepened design of an overhead layer according to a floor plan of a building, wherein the inner wall of a ridge wall adopts a brick masonry ridge wall and a concrete coping structure, the outer wall of the ridge wall adopts a cast-in-place concrete structure with steel bars reserved inside, and the steel bars on the upper layer of a laminated slab are reserved at the top of the cast-in-place ridge wall;
the method comprises the following steps of carrying out deepening design of an overhead layer according to a floor plan of a building, wherein the design comprises the treatment of an overhead plate end support and a support in a plate and the segmentation of an overhead laminated slab. The method for processing the support can adopt several node methods illustrated in the description of the attached drawings, the inner wall of the ridge wall can be pressed by adopting brick masonry and concrete, the outer wall of the ridge wall is of a cast-in-place reinforced concrete structure, and reinforcing bars and reserved reinforcing bars in the concrete member illustrated in the drawings are determined by corresponding design units; the size span of the superimposed sheet should be rationally divided according to the actual engineering condition in the segmentation of superimposed sheet, and the reservation entrance to a cave and the pre-buried pipeline etc. of superimposed sheet should be considered simultaneously.
Secondly, pouring a first-layer structure, namely a shear wall or a frame column, wherein when the shear wall or the frame column is used as an outer wall, only the inner side is reserved with wall body support steel bars and laminated slab upper-layer steel bars, and when the shear wall or the frame column is used as an inner wall, the two sides are both reserved with wall body support steel bars and laminated slab upper-layer steel bars;
and pouring a first-layer structure (namely a shear wall or a frame column), reserving wall body support steel bars and laminated slab upper-layer steel bars at the frame column or the shear wall according to the drawing 2b and the drawing 3b, reserving the steel bars in advance in the construction of the top plate of the basement in the drawing 4b, and planting the steel bars after the construction of the top plate of the basement is finished. The arrangement condition and specification model of the reinforcing steel bars are determined by the original design unit of the engineering.
Step three, building an internal brick masonry ridge wall, and pouring a ridge wall at the outer wall part and a wall body support of the shear wall; positioning and paying off are carried out according to a deepened design drawing before the ridge wall is built or poured, the elevation of the top finished surface of the ridge wall is the elevation of the bottom of the laminated slab, and correspondingly, the elevation of the top finished surface of the wall body support is also the elevation of the bottom of the laminated slab;
the widths of the wall body support and the ridge wall are determined according to the support requirements of the laminated slab and generally are not less than 200 mm. And (3) after the wall support and the cast-in-place ridge wall concrete reach certain strength, the wall support and the cast-in-place ridge wall template need to be dismantled. Particularly, when the brick masonry ridge wall is built, a hole is reserved in the position of the overhaul channel according to the overhaul requirements of the hydroelectric installation pipeline, the overhaul channel is guaranteed to be smooth, and the reserved hole is shown in figure 7.
Step four, mounting the laminated slab, and plugging a gap between the laminated slab and the wall body support by using cement mortar; the outline diagrams after the installation of the node superimposed sheets are shown in fig. 1, fig. 2a, fig. 3a, and fig. 4 a. Reserving anchoring steel bars with hooks at the joint of the laminated slab at the top of the brick masonry ridge wall, wherein when the laminated slab is installed, the reserved steel bars of the laminated slab are crossed and anchored, and the horizontal direction of the laminated slab is not less than 100mm deep into the top of the ridge wall, as shown in figure 1; reserving a straight anchoring steel bar in the laminated slab at the wall body support, and leading the laminated slab to penetrate into the wall body support in the horizontal direction for not less than 100mm when the laminated slab is installed, as shown in fig. 2a, 3a and 4 a; determining the reserved length of the anchoring steel bar of the laminated slab according to a design drawing of the laminated slab; checking whether gaps exist between the laminated slab and the connecting part or not after the laminated slab is installed, and plugging the gap-containing part by using a proper amount of cement mortar;
binding upper-layer steel bars of the laminated slab; connecting the upper-layer steel bars of the reserved laminated slab at the support with the through long steel bars of the cast-in-place layer, wherein the steel bars are connected by lap welding or binding and lap joint according to the actual engineering condition; as shown in FIG. 2-a, FIG. 3-a, FIG. 4-a
Sixthly, pouring upper-layer concrete of the laminated slab; before concrete pouring, checking the pre-buried pipelines and the reserved holes on the laminated slab, and pouring concrete on the surface layer of the cast-in-place laminated slab after confirming that the pre-buried pipelines and the reserved holes are correct;
and seventhly, periodically maintaining the newly poured concrete after pouring is finished. The technical solution is completed, and fig. 6 shows that the concrete is poured.
The beneficial effects of the invention include: 1. the overhead layer is constructed by combining the laminated slab and the ridge wall, the erection of an overhead layer template and a support can be cancelled, the problem that the overhead layer template is difficult to dismantle in the traditional process is avoided, the material is saved, the working procedure is simplified, and the construction period is shortened; 2. the characteristics of the laminated slab in the fabricated building are reasonably utilized, and the laminated slab surface layer is integrally cast, so that the problem of seam remaining by a rear prefabricated slab is avoided; 3. the joint treatment that this scheme provided is adopted to superimposed sheet and shear force wall or frame post handing-over department, is connected with superimposed sheet upper reinforcing bar with the reservation reinforcing bar, has solved the problem that rearmounted prefabricated plate board end can not bear the moment of flexure.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (7)
1. The utility model provides an overhead laminated slab construction structure which characterized in that, this structure includes: the system comprises a ground storehouse top plate (1), shear walls or frame columns (2), ridge walls (3), laminated slabs (4) and an overhead layer; wherein:
the shear wall or the frame column (2) and the ridge wall (3) are arranged above the top plate (1) of the basement, and both the shear wall or the frame column (2) and the ridge wall (3) can be used as an inner wall or an outer wall; the laminated slab (4) is erected above the shear wall or the frame column (2) and the ridge wall (3), and an overhead layer is formed between the laminated slab (4) and the top plate (1) of the ground warehouse;
wall support reinforcing steel bars (6) and laminated slab upper layer reinforcing steel bars (8) are reserved in the middle of the shear wall or the frame column (2), and wall supports (7) are arranged on the wall support reinforcing steel bars (6); the top of the ridge wall (3) is as high as the top of the wall support (7), the laminated slab (4) is erected on the ridge wall (3) and the wall support (7), and the laminated slab (4) is positioned between the wall support (7) and the upper-layer steel bars (8) of the laminated slab;
cast-in-place layer through long steel bars (9) are laid above the laminated slab (4), the upper layer steel bars (8) of the laminated slab are connected with the cast-in-place layer through long steel bars (9), and a cast-in-place laminated slab surface layer (10) is poured on the laminated slab (4), the upper layer steel bars (8) of the laminated slab and the cast-in-place layer through long steel bars (9).
2. The overhead laminated slab construction structure according to claim 1, wherein when the ridge wall (3) is used as an inner wall, the ridge wall (3) is a brick masonry ridge wall, a concrete coping (5) is arranged at the top of the brick masonry ridge wall, and the laminated slab (4) is erected above the concrete coping (5) at the top of the ridge wall (3); both sides of the ridge wall (3) are both the overhead layers.
3. The overhead laminated slab construction structure according to claim 1, wherein when the ridge wall (3) is used as an outer wall, the ridge wall (3) is a cast-in-place ridge wall, cast-in-place ridge wall steel bars (11) are arranged in the ridge wall, laminated slab upper layer steel bars (8) are reserved at the top of the ridge wall, the laminated slab (4) is erected above the cast-in-place ridge wall (3), and the laminated slab (4) is positioned between the ridge wall (3) and the laminated slab upper layer steel bars (8); the outer side of the ridge wall (3) is provided with backfill, and the inner side is an overhead layer.
4. The overhead laminated slab construction structure according to claim 1, wherein when the shear wall or the frame column (2) is used as an inner wall, wall support reinforcing steel bars (6) and laminated slab upper layer reinforcing steel bars (8) are reserved on both sides of the middle part of the shear wall or the frame column (2), and wall supports (7) are arranged on the wall support reinforcing steel bars (6) on both sides; both sides of the shear wall or the frame column (2) are both overhead layers.
5. The overhead laminated slab construction structure according to claim 1, wherein when the shear wall or the frame column (2) is used as an outer wall, only a wall support steel bar (6) and a laminated slab upper layer steel bar (8) are reserved in the middle of the inner side of the shear wall or the frame column (2), and a wall support (7) is arranged on the wall support steel bar (6) at the inner side; backfill is arranged on the outer side of the shear wall or the frame column (2), and an overhead layer is arranged on the inner side.
6. The overhead laminated slab construction structure according to claim 2, wherein when the ridge wall (3) is a brick masonry ridge wall, a reserved hole is further formed in the middle of the brick masonry ridge wall.
7. A construction method of an overhead laminated slab construction structure is characterized by comprising the following steps:
firstly, carrying out a deepened design of an overhead layer according to a floor plan of a building, wherein the inner wall of a ridge wall adopts a brick masonry ridge wall and a concrete coping structure, the outer wall of the ridge wall adopts a cast-in-place concrete structure with steel bars reserved inside, and the steel bars on the upper layer of a laminated slab are reserved at the top of the cast-in-place ridge wall; the method comprises the following steps that the size span of a laminated slab is divided according to actual engineering conditions by means of the division of the laminated slab, and meanwhile reserved holes and pre-buried pipelines of the laminated slab are considered;
secondly, pouring a first-layer structure, namely a shear wall or a frame column, wherein when the shear wall or the frame column is used as an outer wall, only the inner side is reserved with wall body support steel bars and laminated slab upper-layer steel bars, and when the shear wall or the frame column is used as an inner wall, the two sides are both reserved with wall body support steel bars and laminated slab upper-layer steel bars;
step three, building an internal brick masonry ridge wall, and pouring a ridge wall at the outer wall part and a wall body support of the shear wall; positioning and paying off are carried out according to a deepened design drawing before the ridge wall is built or poured, the elevation of the top finished surface of the ridge wall is the elevation of the bottom of the laminated slab, and correspondingly, the elevation of the top finished surface of the wall body support is also the elevation of the bottom of the laminated slab; removing the wall body support and the cast-in-place ridge wall template after the wall body support and the cast-in-place ridge wall concrete reach certain strength; reserving a hole at the position of the overhaul channel according to the overhaul requirements of the hydroelectric installation pipeline when the brick masonry ridge wall is built;
step four, mounting the laminated slab, and plugging a gap between the laminated slab and the wall body support by using cement mortar; reserving anchoring steel bars with hooks at the joint of the laminated slab at the top of the brick masonry ridge wall, wherein when the laminated slab is installed, the reserved steel bars of the laminated slab are crossed and anchored, and the horizontal direction of the laminated slab is not less than 100mm deep into the top of the ridge wall; a straight anchoring steel bar is reserved in the laminated slab at the wall body support, and the laminated slab horizontally penetrates into the wall body support for at least 100mm when being installed; determining the reserved length of the anchoring steel bar of the laminated slab according to a design drawing of the laminated slab; checking whether gaps exist between the laminated slab and the connecting part or not after the laminated slab is installed, and plugging the gap-containing part by using a proper amount of cement mortar;
binding upper-layer steel bars of the laminated slab; connecting the upper-layer steel bars of the reserved laminated slab at the support with the through long steel bars of the cast-in-place layer, wherein the steel bars are connected by lap welding or binding and lap joint according to the actual engineering condition;
sixthly, pouring upper-layer concrete of the laminated slab; before concrete pouring, checking the pre-buried pipelines and the reserved holes on the laminated slab, and pouring concrete on the surface layer of the cast-in-place laminated slab after confirming that the pre-buried pipelines and the reserved holes are correct;
and seventhly, periodically maintaining the newly poured concrete after pouring is finished.
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| CN202010886084.9A CN111877626A (en) | 2020-08-28 | 2020-08-28 | Overhead laminated slab construction structure and construction method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116397885A (en) * | 2023-04-03 | 2023-07-07 | 中建三局第三建设工程有限责任公司 | Low space material transferring method |
| CN116657910A (en) * | 2023-06-16 | 2023-08-29 | 中国建筑第四工程局有限公司 | Formwork-free construction method for flat space structure top plate |
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| JP2018145674A (en) * | 2017-03-06 | 2018-09-20 | 大成ユーレック株式会社 | Wall beam joint structure |
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| CN116657910A (en) * | 2023-06-16 | 2023-08-29 | 中国建筑第四工程局有限公司 | Formwork-free construction method for flat space structure top plate |
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