CN113802745B - Construction method of thin-wall concrete hollow floor - Google Patents
Construction method of thin-wall concrete hollow floor Download PDFInfo
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- CN113802745B CN113802745B CN202110976387.4A CN202110976387A CN113802745B CN 113802745 B CN113802745 B CN 113802745B CN 202110976387 A CN202110976387 A CN 202110976387A CN 113802745 B CN113802745 B CN 113802745B
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F1/00—Bending wire other than coiling; Straightening wire
- B21F1/004—Bending wire other than coiling; Straightening wire by means of press-type tooling
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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
- 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
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
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- 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
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
- E04G11/48—Supporting structures for shutterings or frames for floors or roofs
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Moulds, Cores, Or Mandrels (AREA)
Abstract
The invention discloses a construction method of a thin-wall concrete hollow floor, which comprises the following steps: s1, erecting a scaffold as a formwork support, and paving a bottom formwork, wherein the outer edge distance of the bottom formwork is 18-25 cm; s2, binding bottom steel bars of the floor slab, binding a plurality of vertical bars on the upper surface of the bottom steel bars according to design requirements when the bottom steel bars are bound, enabling 1-2 vertical bars to be arranged between every two core molds, enabling 1-2 vertical bars to be arranged between the core molds and the templates, and supporting the bottom steel bars on the bottom template through cushion blocks. The invention can effectively prevent the core mould from floating upwards.
Description
Technical Field
The invention relates to the field of floor construction. More specifically, the invention relates to a construction method of a thin-wall concrete hollow floor.
Background
The construction technology of the thin-wall concrete hollow floor adopts a thin-wall core mould component, and the component is placed in a floor slab, so that the cast-in-place concrete hollow floor formed by non-coring hole forming is effectively solved.
The thin-wall core mold provides an internal mold form with reliable performance and stable quality for the cast-in-place concrete hollow floor structure. The cast-in-place concrete hollow floor adopting the thin-wall core mold component to realize non-core-pulling pore-forming can save the concrete consumption, reduce the dead weight of the building structure, reduce the construction cost and reduce the earthquake action; the humanized partition can be conveniently realized, and the use area is increased; under the condition of ensuring the use clearance height, the structure layer height can be reduced, and the floor number of a floor can be increased by 10% for a section with height limitation. The quality problem of the hollow floor caused by the floating of the thin-wall box body in the construction process is very necessary for deeply researching the anti-floating control measure of the thin-wall box body.
Disclosure of Invention
To achieve these objects and other advantages and in accordance with the purpose of the invention, as embodied and broadly described, there is provided a method for constructing a thin-walled concrete hollow floor, comprising the steps of:
s1, erecting a scaffold as a formwork support, and paving a bottom formwork, wherein the outer edge distance of the bottom formwork is 18-25 cm;
s2, binding bottom steel bars of a floor slab, binding a plurality of vertical bars on the upper surface of the bottom steel bars according to design requirements when the bottom steel bars are bound, enabling 1-2 vertical bars to be arranged between every two core molds, enabling 1-2 vertical bars to be arranged between the core molds and the templates, and supporting the bottom steel bars on the bottom templates through cushion blocks;
s3, core mold construction:
the structure of the prefabricated core mould is as follows: the bottom of the core mold is provided with a cushion block, a track is fixed on the periphery of the lower portion of the core mold, the upper edge and the lower edge of the track extend outwards horizontally to form a brim, snap rings are slidably arranged in the track, the number of the snap rings is set to enable each side face of the core mold to be provided with 1-2 snap rings, and the number of the snap rings on the side face of the core mold is the same as that of the vertical ribs corresponding to the side face of the core mold;
the prefabricated core mold is positioned and installed, a cushion block at the bottom of the core mold is arranged on a bottom layer steel bar, the adjacent core molds are inserted into two clamping rings opposite to the core molds through a first clamping buckle in an inverted U shape, the adjacent core molds are connected into a whole, the side surfaces of the core molds opposite to the mold plates are connected through second clamping buckles, the second clamping buckles are in the inverted U shape, one ends of the second clamping buckles are inserted into the clamping rings of the core molds, the other ends of the second clamping buckles extend downwards to be connected with the cushion block, and the cushion block is arranged on the bottom layer steel bar;
moving the first buckle and the second buckle to respectively enable the first buckle to be attached to the vertical ribs, fixing the position of the snap ring in the track after the second buckle is attached to the vertical ribs, and bending the vertical ribs between the core molds and the mold plates into a certain angle by taking the vertical ribs and the first buckle/the second buckle as datum points to limit the first buckle/the second buckle to move upwards;
and S4, binding steel bars on the top layer of the floor slab, and pouring concrete.
Preferably, the vertical bar is constructed by a bending mechanism, and the bending mechanism includes:
the base is of a square structure, the bottom surface of the base is connected with telescopic legs, and the bottom surfaces of the telescopic legs are connected with a platform;
the pair of third buckles are of inverted U-shaped structures and are arranged on one side face of the base at intervals, and the top faces of the third buckles are higher than the top face of the base;
the pushing piece comprises a pushing rod and a chuck, the pushing rod is arranged above the base and fixed on the base, the chuck is located between the pair of third buckles, the bottom surface of the chuck and the top surfaces of the third buckles are located on the same horizontal plane, the pushing rod can push the chuck to move horizontally, and the moving direction of the chuck is parallel to the extending direction of the third buckles; and one outward side of the chuck is provided with an inward concave arc bayonet.
Preferably, the method for bending the vertical ribs by using the bending mechanism comprises the following steps: the bending mechanism is arranged behind the vertical rib, the third buckle is clamped on the cross rod of the first buckle or the second buckle, the vertical rib is located between the bending mechanism and the first buckle/the second buckle, the chuck is pushed by the pushing rod, and the chuck pushes the vertical rib to realize bending of the vertical rib.
Preferably, the concrete is cured after the concrete is poured in the step S4; and carrying out layered pouring and vibrating when pouring the concrete.
Preferably, the vertical ribs are arranged as follows: two vertical ribs are arranged between the two adjacent core moulds in the length direction and respectively close to the two ends of the core mould; a vertical rib is arranged between the two adjacent core molds in the width direction and is positioned in the middle of the core molds.
Preferably, the method for fixing the snap ring on the track comprises the following steps: holes are drilled in the rail brim, and clamping pins are inserted to limit the movement of the clamping rings.
The invention at least comprises the following beneficial effects:
two mandrel length direction's head end is fixed through same root perpendicular muscle, two mandrel length direction's tail end is fixed through same root reinforcing bar, the width direction of two mandrels is fixed through a perpendicular muscle, all fixed all around to the mandrel in other words, and a reinforcing bar can fix two mandrels, the construction volume that has significantly reduced, and the fixed anti superficial of the completion mandrel that can stabilize through perpendicular muscle, and the technical scheme of this application, because there is a certain interval between the mandrel, therefore, when erecting the muscle construction, to its positioning accuracy requirement, can in the interval within range between the mandrel, the operation degree of difficulty has been reduced.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic structural view of a thin-walled concrete hollow floor according to the present invention;
fig. 2 is a schematic view of the arrangement of the lower rail of the core mold of the present invention;
FIG. 3 is a schematic view of the bending mechanism of the present invention;
fig. 4 is a schematic view of the chuck of the present invention.
Description of reference numerals: 1 bottom formwork, 2 outer stupefied, 3 bottom reinforcing bars, 4 perpendicular muscle, 5 mandrel, 6 cushion, 7 tracks, 8 brim of a hat, 9 snap rings, 10 first buckles, 11 second buckles, 12 bases, 13 flexible legs, 14 platforms, 15 third buckles, 16 ejector pin, 17 chucks, 18 bayonet locks.
Detailed Description
The invention will be described more fully hereinafter with reference to the accompanying drawings. Those skilled in the art will be able to implement the invention based on these teachings. Before the present invention is described in detail with reference to the accompanying drawings, it is to be noted that: the technical solutions and features provided in the present invention in the respective sections including the following description may be combined with each other without conflict.
Moreover, the embodiments of the present invention described in the following description are generally only some embodiments of the present invention, and not all embodiments. Therefore, all other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative effort shall fall within the protection scope of the present invention.
The invention is further described in detail with reference to the accompanying drawings and implementation, and the specific implementation process is as follows:
as shown in fig. 1 to 4, the invention provides a construction method of a thin-wall concrete hollow floor, which comprises the following steps:
s1, erecting a scaffold as a formwork support, laying a bottom formwork 1, wherein the distance between outer ridges 2 of the bottom formwork 1 is 18-25 cm;
s2, binding bottom steel bars 3 of a floor slab, binding a plurality of vertical bars 4 on the upper surfaces of the bottom steel bars 3 according to design requirements when the bottom steel bars 3 are bound, enabling 1-2 vertical bars 4 to be arranged between every two core molds 5, enabling 1-2 vertical bars 4 to be arranged between the core molds 5 and the templates, and supporting the bottom steel bars 3 on the bottom templates 1 through cushion blocks 6;
s3, core mold 5 construction:
the structure of the precast core mold 5 is: the bottom of the core mold 5 is provided with a cushion block 6, a rail 7 is fixed on the periphery of the lower part of the core mold 5, the upper edge and the lower edge of the rail 7 extend outwards horizontally to form a brim 8, snap rings 9 are slidably mounted in the rail 7, the number of the snap rings 9 is set to enable each side surface of the core mold 5 to be provided with 1-2 snap rings 9, and the number of the snap rings 9 on the side surface of the core mold 5 is the same as the number of the vertical ribs 4 corresponding to the side surface of the core mold 5;
positioning and mounting a prefabricated core mold 5, arranging a cushion block 6 at the bottom of the core mold 5 on a bottom layer steel bar 3, inserting the adjacent core molds 5 into two corresponding clamp rings 9 of the core molds 5 through an inverted U-shaped first buckle 10, connecting the adjacent core molds 5 into a whole, connecting the side surfaces of the core molds 5 opposite to a template through a second buckle 11, wherein the second buckle 11 is inverted U-shaped, one end of the second buckle 11 is inserted into the clamp ring 9 of the core mold 5, the other end of the second buckle 11 extends downwards to be connected with the cushion block 6, and the cushion block 6 is arranged on the bottom layer steel bar 3;
moving the first buckle 10 and the second buckle 11 to respectively enable the first buckle 10 to be attached to the vertical ribs 4, fixing the position of the snap ring 9 in the track 7 after the second buckle 11 is attached to the vertical ribs 4, and bending the vertical ribs 4 between the core dies 5 and the die plates into a certain angle by taking the vertical ribs 4 and the first buckle 10/the second buckle 11 as datum points to limit the first buckle 10/the second buckle 11 to move upwards;
and S4, binding steel bars on the top layer of the floor slab, and pouring concrete.
The technical scheme can also comprise the following technical details so as to better realize the technical effects: erect muscle 4 through bending into the mechanism construction, it includes to bend into the mechanism:
the base 12 is of a square structure, the bottom surface of the base 12 is connected with telescopic legs 13, the bottom surface of the telescopic legs 13 is connected with a platform 14, and the platform 14 can be stably placed on the bottom-layer steel bars 3;
a pair of third fasteners 15, each of which has an inverted U-shaped structure, wherein the pair of third fasteners 15 are disposed at an interval on one side surface of the base 12, and a top surface of the third fasteners 15 is higher than a top surface of the base 12;
the pushing piece comprises a pushing rod 16 and a chuck 17 which are arranged above the base 12, the pushing rod 16 is fixed on the base 12, the chuck 17 is positioned between the pair of third buckles 15, the bottom surfaces of the chuck 17 and the top surfaces of the third buckles 15 are positioned on the same horizontal plane, the pushing rod 16 can push the chuck 17 to move horizontally, and the moving direction of the chuck 17 is parallel to the extending direction of the third buckles 15; the outward side of the chuck 17 is provided with an inward concave arc bayonet.
The technical scheme can also comprise the following technical details so as to better realize the technical effects: the method for bending the vertical ribs 4 by using the bending mechanism comprises the following steps: the bending mechanism is arranged behind the vertical rib 4, the third buckle 15 is clamped on the cross rod of the first buckle 10 or the second buckle 11, the vertical rib 4 is positioned between the bending mechanism and the first buckle 10/the second buckle 11, the pushing rod 16 pushes the chuck 17, the chuck 17 pushes the vertical rib 4, and the bending of the vertical rib 4 is realized.
The technical scheme can also comprise the following technical details so as to better realize the technical effects: performing concrete curing after the concrete is poured in the S4; and carrying out layered pouring and vibrating when pouring the concrete.
The technical scheme can also comprise the following technical details so as to better realize the technical effects: the vertical ribs 4 are arranged as follows: two vertical ribs 4 are arranged between the two adjacent core molds 5 in the length direction, and the two vertical ribs 4 are respectively close to the two ends of the core mold 5; a vertical rib 4 is arranged between the two adjacent core molds 5 in the width direction, and the vertical rib 4 is positioned in the middle of the core mold 5.
In this technical scheme, 5 length direction's of two mandrels head end is fixed through same root perpendicular muscle 4, 5 length direction's of two mandrels tail end is fixed through same root reinforcing bar, two mandrels 5's width direction is fixed through a perpendicular muscle 4, all fixed around being equivalent to mandrel 5, and two mandrels 5 can be fixed to a reinforcing bar, the construction volume that has significantly reduced, and the completion mandrel 5 that can stabilize through perpendicular muscle 4 is anti superficial, and the technical scheme of this application, because there is a determining deviation between the mandrel 5, therefore, when erecting muscle 4 construction, it is not high to its positioning accuracy requirement, can in the interval within range between mandrel 5, the operation degree of difficulty has been reduced.
The technical scheme can also comprise the following technical details so as to better realize the technical effects: the method for fixing the clamp ring 9 on the track 7 comprises the following steps: holes are drilled in the rail 7 visor 8 and bayonet pins 18 are inserted to limit the movement of the snap ring 9.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable to various fields of endeavor for which the invention may be embodied with additional modifications as would be readily apparent to those skilled in the art, and the invention is therefore not limited to the details given herein and to the embodiments shown and described without departing from the generic concept as defined by the claims and their equivalents.
Claims (4)
1. A construction method of a thin-wall concrete hollow floor is characterized by comprising the following steps:
s1, erecting a scaffold as a formwork support, and paving a bottom formwork, wherein the outer edge distance of the bottom formwork is 18-25 cm;
s2, binding bottom steel bars of a floor slab, binding a plurality of vertical bars on the upper surface of the bottom steel bars according to design requirements when the bottom steel bars are bound, enabling 1-2 vertical bars to be arranged between every two core molds, enabling 1-2 vertical bars to be arranged between the core molds and the templates, and supporting the bottom steel bars on the bottom templates through cushion blocks;
s3, core mold construction:
the structure of the prefabricated core mould is as follows: the bottom of the core mold is provided with a cushion block, a track is fixed on the periphery of the lower part of the core mold, the upper edge and the lower edge of the track extend outwards horizontally to form a brim, snap rings are slidably arranged in the track, the number of the snap rings is set to enable each side surface of the core mold to be provided with 1-2 snap rings, and the number of the snap rings on the side surface of the core mold is the same as the number of the vertical ribs corresponding to the side surface of the core mold;
positioning and mounting a prefabricated core mold, arranging a cushion block at the bottom of the core mold on a bottom layer steel bar, inserting the adjacent core molds into the clamping rings opposite to the two core molds through a first clamping buckle in the shape of an inverted U, connecting the adjacent core molds into a whole, connecting the side surfaces of the core molds opposite to a template through a second clamping buckle in the shape of an inverted U, inserting one end of the second clamping buckle into the clamping ring of the core mold, extending downwards the other end of the second clamping buckle to be connected with the cushion block, and arranging the cushion block on the bottom layer steel bar;
moving the first buckle and the second buckle to respectively enable the first buckle to be attached to the vertical ribs, fixing the position of the snap ring in the track after the second buckle is attached to the vertical ribs, and bending the vertical ribs between the core molds and the mold plates into a certain angle by taking the vertical ribs and the first buckle/the second buckle as datum points to limit the first buckle/the second buckle to move upwards;
s4, binding steel bars on the top layer of the floor slab, and pouring concrete;
the construction of perpendicular muscle through bending into mechanism, it includes to bend into the mechanism:
the base is of a square structure, the bottom surface of the base is connected with telescopic legs, and the bottom surfaces of the telescopic legs are connected with a platform;
the pair of third buckles are of inverted U-shaped structures and are arranged on one side face of the base at intervals, and the top faces of the third buckles are higher than the top face of the base;
the pushing piece comprises a pushing rod and a chuck, the pushing rod is arranged above the base and fixed on the base, the chuck is located between the pair of third buckles, the bottom surface of the chuck and the top surfaces of the third buckles are located on the same horizontal plane, the pushing rod can push the chuck to move horizontally, and the moving direction of the chuck is parallel to the extending direction of the third buckles; one outward side of the chuck is provided with an inward concave arc bayonet;
the method for bending the vertical ribs by using the bending mechanism comprises the following steps: the bending mechanism is arranged behind the vertical rib, the third buckle is clamped on the cross rod of the first buckle or the second buckle, the vertical rib is located between the bending mechanism and the first buckle/the second buckle, the chuck is pushed by the pushing rod, and the chuck pushes the vertical rib to realize bending of the vertical rib.
2. The construction method of the thin-wall concrete hollow floor system according to claim 1, wherein concrete curing is performed after concrete is poured in the step S4; and carrying out layered pouring and vibrating when pouring the concrete.
3. The construction method of the thin-walled concrete hollow floor according to claim 1, wherein the vertical ribs are arranged as follows: two vertical ribs are arranged between the two adjacent core moulds in the length direction and respectively close to the two ends of the core mould; a vertical rib is arranged between the two adjacent core molds in the width direction and is positioned in the middle of the core molds.
4. The construction method of the thin-wall concrete hollow floor system as claimed in claim 1, wherein the method for fixing the snap ring on the rail comprises the following steps: holes are drilled in the rail brim, and clamping pins are inserted to limit the movement of the clamping rings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110976387.4A CN113802745B (en) | 2021-08-24 | 2021-08-24 | Construction method of thin-wall concrete hollow floor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110976387.4A CN113802745B (en) | 2021-08-24 | 2021-08-24 | Construction method of thin-wall concrete hollow floor |
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| Publication Number | Publication Date |
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| CN113802745A CN113802745A (en) | 2021-12-17 |
| CN113802745B true CN113802745B (en) | 2023-03-24 |
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Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3400980B2 (en) * | 2000-09-11 | 2003-04-28 | 株式会社高橋製作所 | Tool for tying the cross section between the reinforcing bar and the flat bar |
| CN203343330U (en) * | 2013-06-19 | 2013-12-18 | 叶集试验区红太阳动力机械有限公司 | Rebar bending device |
| CN104499624B (en) * | 2014-12-05 | 2017-06-23 | 徐焱 | The cored slab that a kind of filling box is applied in combination |
| CN105587060B (en) * | 2015-12-23 | 2018-09-14 | 江苏华江建设集团有限公司 | The construction method of the retarded adhesive prestressed cassette ceiling of the cast-in-place post stretching of large span super thick |
| CN106703271A (en) * | 2016-12-28 | 2017-05-24 | 中国冶集团有限公司 | Anti-floating construction method for hollow floor core molds |
| CN206917031U (en) * | 2017-06-20 | 2018-01-23 | 中国华西企业有限公司 | A kind of cast-in-place concrete bamboo core floor construction |
| CN107724583B (en) * | 2017-10-12 | 2020-03-06 | 江苏双楼建设集团有限公司 | Hollow floor system and construction method |
| CN209867200U (en) * | 2019-03-29 | 2019-12-31 | 遵义师范学院 | Steel bar bending device for hollow floor system |
| CN211915313U (en) * | 2020-01-15 | 2020-11-13 | 金中天建设集团有限公司 | Portable reinforcing bar equipment of bending of building site |
| CN112942657B (en) * | 2021-01-18 | 2022-07-26 | 浙江恒昌建设有限公司 | Anti-floating structure of cast-in-place concrete hollow floor and construction method thereof |
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