CN114150805B - Cast-in-situ hollow floor slab inner mold box and construction method thereof - Google Patents
Cast-in-situ hollow floor slab inner mold box and construction method thereof Download PDFInfo
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- CN114150805B CN114150805B CN202111336228.4A CN202111336228A CN114150805B CN 114150805 B CN114150805 B CN 114150805B CN 202111336228 A CN202111336228 A CN 202111336228A CN 114150805 B CN114150805 B CN 114150805B
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- 238000011065 in-situ storage Methods 0.000 title claims abstract description 18
- 238000010276 construction Methods 0.000 title abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 63
- 239000010959 steel Substances 0.000 claims abstract description 63
- 238000007667 floating Methods 0.000 claims abstract description 16
- 239000004567 concrete Substances 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 8
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 7
- 238000009415 formwork Methods 0.000 claims description 4
- 238000005266 casting Methods 0.000 claims description 2
- 230000003014 reinforcing effect Effects 0.000 abstract description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 18
- 229910052742 iron Inorganic materials 0.000 description 9
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
Classifications
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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
- E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
- E04B5/326—Floor structures wholly cast in situ with or without form units or reinforcements with hollow filling 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
- 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
- E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
- E04B5/36—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/162—Connectors or means for connecting parts for reinforcements
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/12—Mounting of reinforcing inserts; Prestressing
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
The invention relates to the technical field of floor construction and discloses an inner die box of a cast-in-situ hollow floor, which comprises an upper die box and a lower die box which are arranged in a covering manner, wherein through holes which penetrate up and down are correspondingly formed in the middle of the upper die box and the middle of the lower die box, and the edge of the upper die box is detachably connected with the edge of the lower die box; the surface of the upper die box is provided with a first positioning component protruding upwards, and the first positioning component is correspondingly arranged with the steel bars of the upper flange plate of the floor slab and is used for positioning and supporting the steel bars of the upper flange plate; the surface of lower die box is provided with the bellied second locating component downwards, the second locating component corresponds with the reinforcing bar of the lower flange plate of floor and arranges, is used for with the lower die box location is fixed on the reinforcing bar of lower flange plate. The invention can improve the positioning accuracy of the inner mold box, avoid the occurrence of a floating box, reduce the labor capacity of workers and reduce the template loss.
Description
Technical Field
The invention relates to the technical field of floor construction, in particular to an inner mould box of a cast-in-situ hollow floor and a construction method thereof.
Background
The cast-in-situ hollow floor slab is a reinforced concrete hollow floor slab with cellular hole structure, which is formed by filling prefabricated permanent internal mold boxes in the slab according to a certain rule. The hollow floor slab not only can adapt to the building requirements of the current large column net and large space, but also can provide flexible application space, has the comprehensive advantages of small floor system occupation space, short construction period, good sound insulation effect, low structural cost and the like, and has wide application prospect.
The cast-in-situ hollow floor slab requires the inner mould box to have light weight, so that the inner mould box is easy to generate a floating box problem in the concrete pouring process, and the displacement of the inner mould box can cause the thickness change of the upper and lower flange plates of the floor slab and the dislocation of the steel bars, thereby bringing about engineering quality problems. The positioning of the inner box mould is a technical difficulty in the construction of the hollow floor slab, and the box mould is suspended between the upper flange plate and the lower flange plate of the hollow floor slab. At present, in the prior art, an inner die box is generally directly arranged above a steel bar of a bottom plate, then the inner die box is buckled by two thin iron wires in a well shape, and the end parts of the iron wires are locked with a wood template at the bottom by screws, so that the inner die box is positioned in a floor slab. However, the mode is labor-consuming, the length and binding force of the iron wires are required to be controlled by the experience of workers in construction, the inner box die is not uniform in floating degree or is completely detached and floating due to improper control, and potential safety hazards are caused.
Disclosure of Invention
In view of the above problems, the invention aims to provide an inner mould box of a cast-in-situ hollow floor slab and a construction method thereof, so as to solve the problems that in the prior art, the length and binding force of iron wires are required to be controlled by the experience of workers in positioning the inner mould box, the inner mould box is easy to float to uneven degree or completely take off wires and float up due to improper control, and potential safety hazards are caused.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the invention provides an inner die box of a cast-in-situ hollow floor slab, which comprises an upper die box and a lower die box which are arranged in a covering manner, wherein through holes which penetrate up and down are correspondingly formed in the middle of the upper die box and the middle of the lower die box, and the edge of the upper die box is detachably connected with the edge of the lower die box; the surface of the upper die box is provided with a first positioning component protruding upwards, and the first positioning component is correspondingly arranged with the steel bars of the upper flange plate of the floor slab and is used for positioning and supporting the steel bars of the upper flange plate; the surface of lower die box is provided with the bellied second locating component downwards, the second locating component corresponds with the reinforcing bar of the lower flange plate of floor and arranges, is used for with the lower die box location is fixed on the reinforcing bar of lower flange plate.
Preferably, the first positioning assembly and the second positioning assembly each comprise a plurality of positioning ribs which are arranged at intervals, and each positioning rib is provided with at least one tooth slot for clamping the reinforcing steel bar.
Preferably, the first positioning component comprises two first positioning units which are arranged at intervals along the length direction of the upper die box, each first positioning unit comprises a plurality of positioning ribs which are arranged in a staggered manner in sequence along the width direction of the upper die box, and each positioning rib is provided with at least one tooth slot for clamping reinforcing steel bars.
Preferably, the first positioning unit comprises a first positioning rib and two second positioning ribs, the two second positioning ribs are respectively located at two sides of the length direction of the first positioning rib, one second positioning rib is attached to one side of the upper die box, the other second positioning rib is attached to the other side of the upper die box, the two second positioning ribs are located on the same straight line, and the first positioning ribs are located at the outer sides of the two second positioning ribs.
Preferably, the length of the first positioning rib is greater than that of the second positioning rib, a plurality of tooth grooves are formed in the first positioning rib at intervals, and one tooth groove is formed in the middle of the second positioning rib.
Preferably, the second positioning assembly comprises two second positioning units which are arranged at intervals along the length direction of the lower die box, each second positioning unit comprises a plurality of positioning ribs which are staggered and arranged at intervals along the width direction of the lower die box, and each positioning rib is provided with at least one tooth slot for clamping reinforcing steel bars.
Preferably, the second positioning unit includes a third positioning rib and two fourth positioning ribs, the two fourth positioning ribs are respectively located at two sides of the length direction of the third positioning rib, each fourth positioning rib is spaced from the side edge of the lower die box, the two fourth positioning ribs are located on the same straight line, and the third positioning rib is located at the inner side of the two fourth positioning ribs.
Preferably, the length of the third positioning rib is greater than the length of the fourth positioning rib.
The invention also provides a construction method of the cast-in-situ hollow floor slab inner mould box, which comprises the following steps:
step S1, carrying out formwork supporting and positioning on a lower flange plate of a floor slab, and binding bottom plate steel bars and dense rib beam ribs to form a grid shape;
s2, arranging a plurality of anti-floating points at intervals along the length direction of the floor slab;
s3, installing an embedded part pipeline;
s4, placing the inner mould box in a grid formed by the bottom plate steel bars and the multi-ribbed beam steel bars, fixing the lower mould box on the bottom plate steel bars through the correspondence between the second positioning components and the bottom plate steel bars, and binding the inner mould box and the bottom plate steel bars;
s5, binding the roof steel bars of the floor slab, and adjusting the position of the inner die box through the correspondence between the first positioning component and the roof steel bars so that the first positioning component positions and supports the roof steel bars;
and S6, casting concrete.
Compared with the prior art, the cast-in-situ hollow floor internal mold box and the construction method thereof have the beneficial effects that:
the cast-in-situ hollow floor slab inner mould box is characterized in that a first positioning component protruding upwards is arranged on the surface of an upper mould box, a second positioning component protruding downwards is arranged on the surface of a lower mould box, and the first positioning component is correspondingly arranged with the steel bars of the upper flange plate of the floor slab to position and support the steel bars of the upper flange plate; the second positioning assembly is correspondingly arranged with the steel bars of the lower flange plate of the floor slab, and positions the relative positions of the lower die box and the steel bars of the lower flange plate, so that the inner die box is positioned. The first positioning component and the second positioning component which are arranged on the inner mould box are used for positioning the relative position of the inner mould box in the hollow floor slab, so that the inner mould box is positioned more accurately. And when the interior mould case is anti-floating in the concrete pouring process, only the interior mould case and the bottom plate steel bar need to be bound and fixed, and the template below the bottom plate steel bar does not need to be directly bound, so that the labor capacity of workers is reduced, the template loss is reduced, the length and binding force of iron wires do not need to be controlled by relying on the experience of the workers, and uneven floating degree of the interior mould or complete wire-stripping floating is avoided.
Drawings
FIG. 1 is a schematic front view of an inner mold box of a cast-in-situ hollow floor slab according to an embodiment of the invention;
FIG. 2 is a schematic top view of the cast-in-place hollow floor inner mold box of FIG. 1;
FIG. 3 is a schematic bottom view of the mold box in the cast-in-place hollow floor slab of FIG. 1;
in the figure, 1, an upper die box; 11. a first positioning unit; 111. a first positioning rib; 112. a second positioning rib; 1121. tooth slots; 2. a lower die box; 21. a second positioning unit; 211. a third positioning rib; 212. fourth positioning ribs; 3. a through hole; 4. a groove; 41. a straight groove; 42. an arc-shaped groove.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
As shown in fig. 1 to 3, an inner mold box of a cast-in-situ hollow floor slab according to an embodiment of the present invention includes an upper mold box 1 and a lower mold box 2 which are arranged in a vertically covering manner, and the upper mold box 1 and the lower mold box 2 are covered to form a hollow box structure. The middle part of the upper die box 1 and the middle part of the lower die box 2 are correspondingly provided with through holes 3 which penetrate up and down and are used for observing and pouring concrete; the edge of the upper die box 1 is detachably connected with the edge of the lower die box 2; the surface of the upper die box 1 is provided with a first positioning component protruding upwards, and the first positioning component is correspondingly arranged with the steel bars of the upper flange plate of the floor slab and is used for positioning and supporting the steel bars of the upper flange plate; the surface of lower die box 2 is provided with the bellied second locating component downwards, the second locating component corresponds with the reinforcing bar of the lower flange plate of floor and arranges, is used for with lower die box 2 location is fixed on the reinforcing bar of lower flange plate.
The surface of the upper die box 1 is provided with a first positioning component protruding upwards, the surface of the lower die box 2 is provided with a second positioning component protruding downwards, and the first positioning component is correspondingly arranged with the steel bars of the upper flange plate of the floor slab to position and support the steel bars of the upper flange plate; the second positioning assembly is correspondingly arranged with the steel bars of the lower flange plate of the floor slab, and the relative positions of the lower die box 2 and the steel bars of the lower flange plate are positioned, so that the inner die box is positioned. The first positioning component and the second positioning component which are arranged on the inner mould box are used for positioning the relative position of the inner mould box in the hollow floor slab, so that the inner mould box is positioned more accurately. And when the interior mould case is anti-floating in the concrete pouring process, only the interior mould case and the bottom plate steel bar need to be bound and fixed, and the template below the bottom plate steel bar does not need to be directly bound, so that the labor capacity of workers is reduced, the template loss is reduced, the length and binding force of iron wires do not need to be controlled by relying on the experience of the workers, and uneven floating degree of the interior mould or complete wire-stripping floating is avoided.
Optionally, the first positioning component and the second positioning component each comprise a plurality of positioning ribs which are arranged at intervals, each positioning rib is provided with at least one tooth slot 1121 for clamping reinforcing steel bars, the first positioning component, the second positioning component and the corresponding reinforcing steel bars are clamped and fixed through the tooth slots 1121 to realize positioning of the inner mold box, and displacement of the inner mold box in the concrete pouring process is avoided. The plurality of tooth slots 1121 are spaced apart along the length of the positioning rib. The plurality of positioning ribs are arranged in parallel and are parallel to one side edge of the inner mold box.
Optionally, the first positioning component includes two first positioning units 11 that are arranged at intervals along the length direction of the upper die case 1, the setting forms of the two first positioning units 11 are the same, each first positioning unit 11 includes a plurality of positioning ribs that are staggered in sequence along the width direction of the upper die case 1, the staggered arrangement refers to that the plurality of positioning ribs are not on the same straight line in the width direction of the upper die case 1, the plurality of positioning ribs are sequentially arranged, and the sum of the lengths of the plurality of positioning ribs is equal to the width of the upper die case 1. Each positioning rib is provided with at least one tooth slot 1121 for clamping the corresponding steel bar, and the corresponding steel bar is clamped and fixed through the tooth slot 1121.
In this embodiment, the two first positioning units 11 are symmetrically arranged along a central vertical plane of the inner mold box, and the central vertical plane is perpendicular to the length direction of the inner mold box. As shown in fig. 2, the first positioning unit 11 includes a first positioning rib 111 and two second positioning ribs 112, the two second positioning ribs 112 are respectively located at two sides of the length direction of the first positioning rib 111, one of the second positioning ribs 112 is attached to one side of the upper die box 1, the other second positioning rib 112 is attached to the other side of the upper die box 1, the two second positioning ribs 112 are located on the same straight line, the first positioning rib 111 is located at the outer sides of the two second positioning ribs 112, the outer sides refer to one side far away from the center of the upper die box 1, and the perpendicular bisector of the first positioning rib 112 coincides with the perpendicular bisector of the side of the upper die box 1. The length of the first positioning rib 111 is greater than that of the second positioning rib 112, a plurality of tooth grooves 1121 are formed in the first positioning rib 111 at intervals, one tooth groove 1121 is formed in the middle of the second positioning rib 112, and the sum of the length of the first positioning rib 111 and the length of the two second positioning ribs 112 is equal to the width of the upper die box 1. The first positioning rib 111 and the second positioning rib 112 are arranged in parallel.
Optionally, the second positioning assembly includes two second positioning units 21 that are arranged at intervals along the length direction of the lower die box 2, the structures of the two second positioning units 21 are the same, each second positioning unit 21 includes a plurality of positioning ribs that are staggered and arranged at intervals along the width direction of the lower die box 2, the staggered and arranged at intervals means that the plurality of positioning ribs are not on the same straight line in the width direction of the lower die box 2, the plurality of positioning ribs are arranged at intervals, and the sum of the lengths of the plurality of positioning ribs is smaller than the width of the lower die box 2. Each positioning rib is provided with at least one tooth slot 1121 for clamping the corresponding steel bar, and the corresponding steel bar is clamped and fixed through the tooth slot 1121.
In this embodiment, the two second positioning units 21 are symmetrically arranged along a central vertical plane of the inner mold box, and the central vertical plane is perpendicular to the length direction of the inner mold box. As shown in fig. 3, the second positioning unit 21 includes a third positioning rib 211 and two fourth positioning ribs 212, the two fourth positioning ribs 212 are respectively located at two sides of the third positioning rib 211 in the length direction, each fourth positioning rib 212 is spaced from the side edge of the lower mold box 2, the two fourth positioning ribs 212 are located on the same straight line, the third positioning rib 211 is located at the inner sides of the two fourth positioning ribs 212, and the inner side is the side close to the center of the inner mold box. Further, the length of the third positioning rib 211 is greater than the length of the fourth positioning rib 212. The sum of the lengths of the third positioning rib 211 and the two fourth positioning ribs 212 is smaller than the width of the lower die case 2. The third positioning rib 211 and the fourth positioning rib 212 are arranged in parallel.
The height of each positioning rib is determined according to the thickness of the upper flange plate, the thickness of the lower flange plate and the positions of the designed bottom plate steel bars and the designed top plate steel bars. According to the invention, through each positioning rib fixed on the inner mold box, the positioning of the inner mold box can be realized, the inner mold box can be fixed with the bottom plate steel bar or the top plate steel bar can be supported, the inner mold box floating box is avoided, the construction process can be simplified, and the construction efficiency is improved.
In this embodiment, the upper die case 1 and the lower die case 2 are square, the length and the width are 580mm, the sum of the heights of the upper die case 1 and the lower die case 2 is 220mm, the heights of the first positioning rib 111 and the second positioning rib 112 are 15mm, and the heights of the third positioning rib 211 and the fourth positioning rib 212 are 30mm.
The surfaces of the upper die box 1 and the lower die box 2 are provided with grooves 4, and the grooves 4 comprise straight grooves 41 extending radially outwards from the center of the through hole 3 and arc grooves 42 taking four corners as circle centers. Wherein, the arrangement of the straight groove 41 and the arc groove 42 is determined according to surface mechanics and a processing technology, so as to strengthen the compressive strength of the inner die box and meet the requirement of construction load.
The embodiment of the invention also provides a construction method of the cast-in-situ hollow floor slab inner mould box, which comprises the following steps:
step S1, carrying out formwork supporting and positioning on a lower flange plate of a floor slab, and binding bottom plate steel bars and dense rib beam ribs to form a grid shape;
s2, arranging a plurality of anti-floating points at intervals along the length direction of the floor slab; specifically, the adjacent anti-floating point distance is 1.5m to 2m, holes are drilled in the bottom templates of the bottom plate steel bars at the anti-floating point, the bottom plate steel bars are fixed by utilizing iron wires, and the iron wires penetrate through the drilled holes of the bottom templates to fix the bottom steel bars and the bottom templates;
s3, installing an embedded part pipeline;
s4, placing the inner mould box in a grid formed by the bottom plate steel bars and the multi-ribbed beam steel bars, fixing the lower mould box 2 on the bottom plate steel bars through the correspondence between the second positioning components and the bottom plate steel bars, and binding the inner mould box and the bottom plate steel bars, so that the work of screwing the box mould on the wood template is reduced; specifically, two thin iron wires in two directions are used for binding an inner die box in a well shape, the inner die box is tied on a bottom plate steel bar in a bolt mode, binding of the inner die box and a bottom template is not needed, labor capacity is reduced, and template loss is reduced;
s5, binding the roof steel bars of the floor slab, and adjusting the position of the inner die box through the correspondence between the first positioning component and the roof steel bars so that the first positioning component positions and supports the roof steel bars; the position of the inner die box is checked, and the position of the inner die box with loosening phenomenon or position deviation is adjusted so as to facilitate the follow-up concrete pouring work;
and S6, concrete is poured, specifically, before the concrete is poured, the inner mold box is watered and wetted, after the concrete is poured, the concrete is poured into the bottom of the inner mold box from the through hole 3 in the center of the inner mold box, and after the concrete at the bottom is determined to be compact, the concrete at other positions is poured. And, when pouring concrete, avoid vibrating rod direct contact box as far as possible, adopt small-size vibrating rod to vibrate as far as possible. If the concrete is carelessly damaged in the vibrating process, the light filler is immediately used for filling the crack, so that the concrete is prevented from being poured into the box body.
Further, after the concrete is poured, the poured concrete is maintained, and after the strength of the concrete reaches the design strength, the formwork of the lower flange plate of the floor slab is removed.
In step S4, the inner mold box may be assembled at the construction site. Because the inner die box is composed of the upper die box 1 and the lower die box 2, the upper die box 1 and the lower die box 2 can be produced separately and transported separately, and the occupied volume in the transportation process is reduced.
It should be noted that, other specific embodiments of the construction method of the cast-in-situ hollow floor inner mold box of the present invention are substantially the same as the specific embodiments of the cast-in-situ hollow floor inner mold box described above, and the present invention is not repeated in detail.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present invention, and these modifications and substitutions should also be considered as being within the scope of the present invention.
Claims (4)
1. The cast-in-situ hollow floor slab inner die box is characterized by comprising an upper die box and a lower die box which are arranged in a vertically covering manner, wherein through holes which penetrate up and down are correspondingly formed in the middle of the upper die box and the middle of the lower die box, and the edge of the upper die box is detachably connected with the edge of the lower die box; the surface of the upper die box is provided with a first positioning component protruding upwards, and the first positioning component is correspondingly arranged with the steel bars of the upper flange plate of the floor slab and is used for positioning and supporting the steel bars of the upper flange plate; the surface of the lower die box is provided with a second positioning component protruding downwards, and the second positioning component is correspondingly arranged with the steel bars of the lower flange plate of the floor slab and is used for positioning and fixing the lower die box on the steel bars of the lower flange plate;
the first positioning assembly comprises two first positioning units which are arranged at intervals along the length direction of the upper die box, each first positioning unit comprises a plurality of positioning ribs which are sequentially staggered along the width direction of the upper die box, each positioning rib is provided with at least one tooth slot for clamping reinforcing steel bars, the plurality of positioning ribs of the first positioning unit are not on the same straight line, the plurality of positioning ribs of the first positioning unit are sequentially arranged along the width direction of the upper die box, and the sum of the lengths of the plurality of positioning ribs of the first positioning unit is equal to the width of the upper die box; the first positioning unit comprises a first positioning rib and two second positioning ribs, the two second positioning ribs are respectively positioned at two sides of the length direction of the first positioning rib, one second positioning rib is attached to one side of the upper die box, the other second positioning rib is attached to the other side of the upper die box, the two second positioning ribs are positioned on the same straight line, and the first positioning rib is positioned at the outer sides of the two second positioning ribs;
the second positioning assembly comprises two second positioning units which are arranged at intervals along the length direction of the lower die box, each second positioning unit comprises a plurality of positioning ribs which are staggered and arranged at intervals along the width direction of the lower die box, and each positioning rib is provided with at least one tooth slot for clamping reinforcing steel bars; the plurality of positioning ribs of the second positioning unit are not on the same straight line, and the sum of the lengths of the plurality of positioning ribs of the second positioning unit is smaller than the width of the lower die box; the second positioning unit comprises a third positioning rib and two fourth positioning ribs, the two fourth positioning ribs are respectively positioned at two sides of the length direction of the third positioning rib, each fourth positioning rib is spaced from the side edge of the lower die box, the two fourth positioning ribs are positioned on the same straight line, and the third positioning rib is positioned at the inner sides of the two fourth positioning ribs;
grooves are formed in the surfaces of the upper die box and the lower die box, and each groove comprises a straight groove and an arc groove, wherein the straight groove extends outwards from the center of the through hole in the radial direction, and the arc groove takes four corners as circle centers.
2. The cast-in-situ hollow floor inner mould box according to claim 1, wherein the length of the first positioning rib is greater than that of the second positioning rib, a plurality of tooth grooves are arranged on the first positioning rib at intervals, and one tooth groove is arranged in the middle of the second positioning rib.
3. The cast-in-place hollow floor inner mold box of claim 1, wherein the length of the third positioning rib is greater than the length of the fourth positioning rib.
4. A method of constructing an internal mold box for a cast-in-place hollow floor as claimed in any one of claims 1 to 3, comprising the steps of:
step S1, carrying out formwork supporting and positioning on a lower flange plate of a floor slab, and binding bottom plate steel bars and dense rib beam ribs to form a grid shape;
s2, arranging a plurality of anti-floating points at intervals along the length direction of the floor slab;
s3, installing an embedded part pipeline;
s4, placing the inner mould box in a grid formed by the bottom plate steel bars and the multi-ribbed beam steel bars, fixing the lower mould box on the bottom plate steel bars through the correspondence between the second positioning components and the bottom plate steel bars, and binding the inner mould box and the bottom plate steel bars;
s5, binding the roof steel bars of the floor slab, and adjusting the position of the inner die box through the correspondence between the first positioning component and the roof steel bars so that the first positioning component positions and supports the roof steel bars;
and S6, casting concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111336228.4A CN114150805B (en) | 2021-11-11 | 2021-11-11 | Cast-in-situ hollow floor slab inner mold box and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111336228.4A CN114150805B (en) | 2021-11-11 | 2021-11-11 | Cast-in-situ hollow floor slab inner mold box and construction method thereof |
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| CN114150805A CN114150805A (en) | 2022-03-08 |
| CN114150805B true CN114150805B (en) | 2024-01-12 |
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| CN109577647A (en) * | 2018-12-11 | 2019-04-05 | 山东建筑大学 | One kind is from anti-floating plastics diaphragm capsule and construction method |
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2021
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204266440U (en) * | 2014-10-23 | 2015-04-15 | 禹社文 | A kind of two-way cylinder tube filler inner mold |
| KR101726779B1 (en) * | 2015-12-17 | 2017-04-26 | 한국건설기술연구원 | Fastening Device for Preventing the Buoyancy of Hollow Body for Hollow Slab |
| CN109577647A (en) * | 2018-12-11 | 2019-04-05 | 山东建筑大学 | One kind is from anti-floating plastics diaphragm capsule and construction method |
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| CN114150805A (en) | 2022-03-08 |
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