CN114645595A - Concrete pouring method for hollow floor system - Google Patents
Concrete pouring method for hollow floor system Download PDFInfo
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- CN114645595A CN114645595A CN202210453619.2A CN202210453619A CN114645595A CN 114645595 A CN114645595 A CN 114645595A CN 202210453619 A CN202210453619 A CN 202210453619A CN 114645595 A CN114645595 A CN 114645595A
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- 239000004567 concrete Substances 0.000 title claims abstract description 119
- 238000000034 method Methods 0.000 title claims abstract description 35
- 230000007246 mechanism Effects 0.000 claims abstract description 56
- 238000003756 stirring Methods 0.000 claims abstract description 44
- 239000002994 raw material Substances 0.000 claims abstract description 14
- 210000001503 joint Anatomy 0.000 claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 claims abstract description 8
- 238000007599 discharging Methods 0.000 claims abstract description 5
- 238000005266 casting Methods 0.000 claims abstract description 4
- 229910052602 gypsum Inorganic materials 0.000 claims description 27
- 239000010440 gypsum Substances 0.000 claims description 27
- 238000009434 installation Methods 0.000 claims description 16
- 239000010410 layer Substances 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000005192 partition Methods 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 8
- 238000010276 construction Methods 0.000 claims description 6
- 238000005336 cracking Methods 0.000 claims description 6
- 238000009415 formwork Methods 0.000 claims description 6
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- -1 generally Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 239000002893 slag Substances 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 239000004575 stone Substances 0.000 claims description 3
- 239000002344 surface layer Substances 0.000 claims description 3
- 239000002699 waste material Substances 0.000 claims description 3
- 244000309464 bull Species 0.000 description 7
- 230000000694 effects Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/003—Methods for mixing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/003—Methods for mixing
- B28C5/006—Methods for mixing involving mechanical aspects
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
- B28C5/10—Mixing in containers not actuated to effect the mixing
- B28C5/12—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers
- B28C5/16—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers the stirrers having motion about a vertical or steeply inclined axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/16—Discharge means, e.g. with intermediate storage of fresh concrete
-
- 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
-
- 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
- E04G21/04—Devices for both conveying and distributing
-
- 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
- E04G21/06—Solidifying concrete, e.g. by application of vacuum before hardening
- E04G21/08—Internal vibrators, e.g. needle vibrators
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention discloses a hollow floor concrete casting method, which comprises the following steps: s1: adding a proper amount of concrete raw materials into the box body through the feeding seat, and enabling the driving mechanism to be connected with the stirring mechanism by controlling the butting mechanism; the stirring and vibrating device consists of a box body, a feeding seat, a feeding pipe, a discharging port, a switching mechanism, a stirring mechanism, a driving mechanism, a butt joint mechanism and a vibrating mechanism. Has the advantages that: the hollow floor concrete is poured in a rib-jumping pouring mode, and is poured twice and formed once, so that the anti-floating treatment and air removal of the concrete are facilitated, and the compactness of the floor concrete can be ensured; meanwhile, only one device is needed for stirring and vibrating the concrete, different devices do not need to be replaced, and the space occupation and the production cost of a pouring site are reduced.
Description
Technical Field
The invention relates to the technical field of hollow floor concrete pouring, in particular to a hollow floor concrete pouring method.
Background
The hollow floor is a cast-in-place reinforced concrete hollow floor, also called a cast-in-place girderless hollow floor, and the cast-in-place hollow floor is formed after a core mould product is installed; meanwhile, in the pouring process, different devices are required for stirring and vibrating the concrete, so that the space occupancy rate of a pouring site is increased, and the production cost is increased due to the use of various devices.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a hollow floor concrete pouring method.
In order to achieve the purpose, the invention adopts the following technical scheme:
the hollow floor concrete pouring method comprises the following steps:
s1: adding a proper amount of concrete raw materials into the box body through the feeding seat, enabling the driving mechanism to be connected with the stirring mechanism by controlling the butting mechanism, and then enabling the driving mechanism to start to operate to stir the concrete raw materials in the box body;
s2: after the concrete raw materials are stirred, the discharge hole is opened through the switch mechanism, the concrete is taken out and injected into a gypsum mold box for casting the hollow floor, the slump of the concrete bottom layer in the gypsum mold box to the port is kept between 200 and 220mm, a cavity is easily formed at the bottom when the slump is too small, and the slump of the concrete cast on the surface layer can be 180 and 200 mm;
s3: when the bottom layer poured concrete is within 60mm in thickness, fine stone (within 16mm in particle size) concrete is adopted, and when the bottom layer poured concrete is greater than or equal to 70mm in thickness, common concrete can be adopted;
s4: the thickness of the first pouring of the slab surface is about 2/5 which is not more than the thickness of the whole hollow floor slab;
s5: after the first concrete pouring is finished, moving the stirring and vibrating device, and vibrating a concrete layer in the gypsum mold box by using a vibrating mechanism on the stirring and vibrating device, wherein during vibrating, the concrete layer is vertically inserted, quickly inserted, slowly pulled, does not depend on the gypsum mold box, does not depend on a reinforcing steel bar, does not depend on other embedded parts, does not have vibration leakage, is easy to form a hole due to vibration leakage, has the same vibrating time as that of a common concrete plate, does not generate bubbles, does not remarkably sink, and starts to be subjected to slurry flooding;
s6: finishing the second concrete pouring treatment before the first pouring initial setting (taking C30 concrete as an example, the initial setting time is generally 2 hours in spring and autumn, 1 hour in summer and 3-4 hours in winter), and because the field adopted modes are different (such as a natural pump, a tower crane and the like), the concrete cannot be poured according to the rib jump completely due to overlarge inertia in the pouring process; the phenomenon of cracking, water seepage and the like caused by cold joints can be formed when the interval time between the first pouring and the second pouring is too long, and construction, supervision, design, technical personnel of the company and the like are informed in time when the cold joints do not meet the standard requirements due to various reasons in the pouring process, so that the quality problems of water seepage, cracking and the like in the later period are reduced;
s7: curing the poured concrete, generally, film covering and watering curing is performed, because the gypsum mold box is a water-absorbing product, after demolding, when the temperature exceeds 30 ℃, watermarks can be formed at the upper part and the lower part, and water drops can be formed in the area of the bottom part, the phenomenon is a normal phenomenon that the gypsum mold box performs built-in curing on the concrete, the curing time can be 3-6 months or even longer, and no phenomenon occurs after the water is completely dissipated;
s8: the method comprises the following steps of (1) carrying out formwork removal treatment on the formed hollow floor concrete, wherein the formwork removal time is that the strength of the concrete reaches 100%, sundries, waste slag and the like cannot be accumulated on a plate surface in a centralized manner, manufacturing rooms for steel bar carpenters and the like cannot be arranged on the plate surface, and the construction machines exceeding the designed load are strictly prohibited from entering the plate surface;
the stirring and vibrating device consists of a box body, a feeding seat, a feeding pipe, a discharging port, a switching mechanism, a stirring mechanism, a driving mechanism, a butt joint mechanism and a vibrating mechanism.
In the concrete pouring method for the hollow floor, the feeding seat is communicated with the box body through the feeding pipe, the lower end of the box body is fixedly provided with the plurality of supporting rods, the lower end of each supporting rod is provided with the universal wheel, and the lower end of the box body is obliquely arranged.
In the concrete pouring method for the hollow floor system, the switch mechanism comprises a through groove, a partition plate, a clamping groove, a pull plate and a plurality of fixing bolts, the through groove is formed in the side wall of the box body, the partition plate is connected to the through groove in a sliding mode, the clamping groove is formed in the inner wall of the box body and matched with the partition plate, the pull plate is fixedly installed at one end, located outside the box body, of the partition plate, and the fixing bolts are all connected between the pull plate and the box body in a threaded mode.
In the concrete pouring method for the hollow floor, the stirring mechanism is composed of a through hole, a rotating rod and a plurality of stirring blades, the through hole is fixedly installed on the box body, the rotating rod is rotatably connected to the through hole, the stirring blades are sequentially and fixedly installed on the side wall of the rotating rod from top to bottom, and the rotating rod is located at the upper end of the partition plate.
In the concrete pouring method for the hollow floor system, the driving mechanism comprises a motor, two driving rods, a cross clamping rod, a cross clamping groove and two mounting seats, wherein the two mounting seats are connected to the box body in a sliding mode, the motor is fixedly mounted between the two mounting seats, the driving rods are fixedly connected to the output end of the motor, the cross clamping rod is fixedly mounted at the lower end of the driving rods, the cross clamping groove is formed in the rotating rod, and the cross clamping groove corresponds to the cross clamping rod in position.
In the concrete pouring method for the hollow floor system, the butt joint mechanism is composed of a rotary groove, a screw rod, a positioning rod and two positioning blocks, the rotary groove is formed in the box body, the screw rod is connected to the rotary groove in a rotating mode and is in threaded connection with the corresponding mounting seat, the positioning rod is fixedly mounted on the box body and is in sliding connection with the other mounting seat, the two positioning blocks are fixedly mounted on the screw rod and the positioning rod respectively, and the length of the screw rod is larger than the depth of the cross-shaped clamping groove.
In the concrete pouring method for the hollow floor system, the vibrating mechanism comprises a support rod, a worm, a flexible shaft, a vibrating rod and a worm wheel, the support rod is fixedly installed on the box body, the worm is rotatably connected to the support rod, the flexible shaft is fixedly installed on the left side of the worm, the vibrating rod is fixedly installed on the flexible shaft, the worm wheel is fixedly installed on the drive rod, and the worm wheel is matched with the worm.
In the concrete pouring method for the hollow floor, a sliding groove is formed in the side wall of the box body, a sliding block is connected to the sliding groove in a sliding mode, an installation rod is fixedly installed on the sliding block, a supporting sleeve is fixedly installed on the installation rod, a round hole is formed in the supporting sleeve, a bearing is installed between the round hole and the vibrating rod, two installation blocks are fixedly installed on the side wall of the box body, a screw rod is connected between the two installation blocks in a rotating mode, and the screw rod is in threaded connection with the installation rod.
Compared with the prior art, the invention has the advantages that:
1: the concrete of the hollow floor system is poured in a rib-jumping pouring mode, and the concrete is poured twice and formed once, so that the anti-floating treatment and air removal of the concrete are facilitated, and the compactness of the concrete of the bottom layer can be ensured.
2: the stirring and vibrating device can complete stirring of concrete raw materials and vibration treatment of concrete in the gypsum mold box, different devices do not need to be replaced, and occupation of space of a pouring site when a plurality of devices are used is reduced.
3: only one power assembly is needed for stirring the concrete raw materials and vibrating the concrete in the gypsum mold box, so that the production cost is reduced.
4: the use function (to the stirring of concrete raw materials or to the vibration of concrete in the gypsum die box) of the device is convenient for adjust, and the use method is comparatively simple and convenient.
5: when the concrete vibrates in the gypsum mould box, the depth of the vibrating rod in the gypsum mould box can be adjusted according to needs, so that the vibrating effect can be effectively ensured.
In conclusion, the hollow floor concrete disclosed by the invention is poured in a rib-jumping pouring mode, and is poured twice and formed once, so that the anti-floating treatment and air removal of the concrete are facilitated, and the compactness of the bottom concrete can be ensured; meanwhile, only one device is needed for stirring and vibrating the concrete, different devices do not need to be replaced, and the space occupation and the production cost of a pouring site are reduced.
Drawings
FIG. 1 is a schematic structural diagram of a stirring and vibrating device in a hollow floor concrete pouring method provided by the invention;
FIG. 2 is a front view of FIG. 1;
FIG. 3 is an enlarged view of the structure of portion A in FIG. 1;
fig. 4 is an enlarged schematic view of the structure of part B in fig. 1.
In the figure: the device comprises a box body 1, a feeding seat 2, a feeding pipe 3, a discharging port 4, a supporting rod 5, a universal wheel 6, a partition plate 7, a pulling plate 8, a fixing bolt 9, a through hole 10, a rotating rod 11, a stirring blade 12, a mounting seat 13, a motor 14, a driving rod 15, a cross clamping rod 16, a cross clamping groove 17, a supporting rod 18, a worm 19, a flexible shaft 20, a vibrating rod 21, a rotating groove 22, a screw rod 23, a positioning rod 24, a positioning block 25, a worm wheel 26, a sliding groove 27, a sliding block 28, a mounting rod 29, a supporting sleeve 30, a round hole 31, a mounting block 32 and a screw rod 33.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, the hollow floor concrete pouring method comprises the following steps:
s1: adding a proper amount of concrete raw materials into the box body 1 through the feeding seat 2, controlling the butting mechanism to enable the driving mechanism to be connected with the stirring mechanism, and then enabling the driving mechanism to start to operate to stir the concrete raw materials in the box body 1;
s2: after the concrete raw materials are stirred, the discharge port 4 is opened through the switch mechanism, the concrete is taken out and injected into a gypsum mold box for casting the hollow floor, the port-to-port slump of the concrete bottom layer in the gypsum mold box is kept between 200 and 220mm, a cavity is easily formed at the bottom when the slump is too small, and the slump of the concrete cast on the surface layer can be 180 and 200 mm;
s3: when the bottom layer poured concrete is within 60mm in thickness, fine stone (within 16mm in particle size) concrete is adopted, and when the bottom layer poured concrete is greater than or equal to 70mm in thickness, common concrete can be adopted;
s4: the thickness of the first pouring of the slab surface is about 2/5 which is not more than the thickness of the whole hollow floor slab;
s5: after the first concrete pouring is finished, moving the stirring and vibrating device, and vibrating a concrete layer in the gypsum mold box by using a vibrating mechanism on the stirring and vibrating device, wherein during vibrating, the concrete layer is vertically inserted, quickly inserted, slowly pulled, does not depend on the gypsum mold box, does not depend on a reinforcing steel bar, does not depend on other embedded parts, does not have vibration leakage, is easy to form a hole due to vibration leakage, has the same vibrating time as that of a common concrete plate, does not generate bubbles, does not remarkably sink, and starts to be subjected to slurry flooding;
s6: finishing the second concrete pouring treatment before the first pouring initial setting (taking C30 concrete as an example, the initial setting time is generally 2 hours in spring and autumn, 1 hour in summer and 3-4 hours in winter), and because the field adopted modes are different (such as a natural pump, a tower crane and the like), the concrete cannot be poured according to the rib jump completely due to overlarge inertia in the pouring process; the phenomenon of cracking, water seepage and the like caused by cold joints can be formed when the interval time between the first pouring and the second pouring is too long, and construction, supervision, design, technical personnel of the company and the like are informed in time when the cold joints do not meet the standard requirements due to various reasons in the pouring process, so that the quality problems of water seepage, cracking and the like in the later period are reduced;
s7: curing the poured concrete, generally, film covering and watering curing is performed, because the gypsum mold box is a water-absorbing product, after demolding, when the temperature exceeds 30 ℃, watermarks can be formed at the upper part and the lower part, and water drops can be formed in the area of the bottom part, the phenomenon is a normal phenomenon that the gypsum mold box performs built-in curing on the concrete, the curing time can be 3-6 months or even longer, and no phenomenon occurs after the water is completely dissipated;
s8: the method comprises the following steps of (1) carrying out formwork removal treatment on the formed hollow floor concrete, wherein the formwork removal time is that the strength of the concrete reaches 100%, sundries, waste slag and the like cannot be accumulated on a plate surface in a centralized manner, manufacturing rooms for steel bar carpenters and the like cannot be arranged on the plate surface, and the construction machines exceeding the designed load are strictly prohibited from entering the plate surface;
the stirring and vibrating device consists of a box body 1, a feeding seat 2, a feeding pipe 3, a discharging port 4, a switching mechanism, a stirring mechanism, a driving mechanism, a butt joint mechanism and a vibrating mechanism.
The above is noteworthy:
1. the feeding seat 2 is communicated with the box body 1 through the feeding pipe 3, a plurality of supporting rods 5 are fixedly mounted at the lower end of the box body 1, universal wheels 6 are mounted at the lower ends of the supporting rods 5, the lower end of the box body 1 is inclined, the concrete stirred in the box body 1 is discharged better, and the universal wheels 6 are convenient to move due to the fact that the concrete is arranged in the box body 1 conveniently.
2. The on-off mechanism is by leading to the groove, baffle 7, the draw-in groove, arm-tie 8 and a plurality of fixing bolt 9 are constituteed, it sets up on the lateral wall of box 1 to lead to the groove, 7 sliding connection of baffle are on leading to the groove, the draw-in groove sets up on the inner wall of box 1, and the draw-in groove cooperatees with baffle 7, arm-tie 8 fixed mounting is served at baffle 7 outside being located box 1, the equal threaded connection of a plurality of fixing bolt 9 is between arm-tie 8 and box 1, through the regulation to baffle 7 at box 1 internal position, can control lining up between 1 lower extreme of box and discharge gate 4.
3. Rabbling mechanism comprises through-hole 10, bull stick 11 and a plurality of stirring leaf 12, and through-hole 10 fixed mounting is on box 1, and bull stick 11 rotates to be connected on through-hole 10, and a plurality of stirring leaf 12 are from last to down fixed mounting in proper order on the lateral wall of bull stick 11, and bull stick 11 is located the upper end of baffle 7, and when bull stick 11 rotated, a plurality of stirring leaf 12 of accessible were to the concrete stirring that is located box 1 and are handled.
4. Actuating mechanism is by motor 14, two actuating levers 15, cross kelly 16, cross draw-in groove 17 and two mount pads 13 are constituteed, two equal sliding connection of mount pad 13 are on box 1, 14 fixed mounting of motor is between two mount pads 13, 15 fixed connection of actuating lever are on the output of motor 14, 16 fixed mounting of cross kelly are at 15 lower extremes of actuating lever, cross draw-in groove 17 is seted up on bull stick 11, and cross draw-in groove 17 is corresponding with the 16 positions of cross kelly, when the mutual joint of cross kelly 16 and cross draw-in groove 17, open motor 14, usable actuating lever 15 drives bull stick 11 and rotates, thereby can make the concrete stirring processing of a plurality of stirring leaf 12 counterpointing in box 1.
5. The mechanism of vibrating is by bracing piece 18, worm 19, flexible axle 20, the stick of vibrating 21 and worm wheel 26 are constituteed, bracing piece 18 fixed mounting is on box 1, worm 19 rotates to be connected on bracing piece 18, flexible axle 20 fixed mounting is on the left of worm 19, the stick of vibrating 21 fixed mounting is on flexible axle 20, worm wheel 26 fixed mounting is on actuating lever 15, and worm wheel 26 and worm 19 to the cooperation, when the concrete that needs to be in the gypsum mold box is vibrated and is handled, insert the stick of vibrating 21 wherein, rotate worm 19 afterwards and can make flexible axle 20 drive the stick of vibrating 21 completion and process the vibration of concrete.
6. The butt joint mechanism is composed of a rotary groove 22, a screw rod 23, a positioning rod 24 and two positioning blocks 25, the rotary groove 22 is arranged on the box body 1, the screw rod 23 is rotatably connected on the rotary groove 22, the screw rod 23 is in threaded connection with the corresponding mounting seat 13, the positioning rod 24 is fixedly arranged on the box body 1, the positioning rod 24 is in sliding connection with the other mounting seat 13, the two positioning blocks 25 are respectively and fixedly arranged on the screw rod 23 and the positioning rod 24, the length of the screw rod 23 is greater than the depth of the cross clamping groove 17, the mounting height of the motor 14 relative to the box body 1 can be controlled by rotating the screw rod 23, when the stirring of the concrete in the box body 1 is completed and the concrete in a gypsum mold box needs to be stirred, the motor 14 is enabled to move upwards to separate from the cross clamping rod 16 and the cross clamping groove 17, at the moment, a worm wheel 26 on the driving rod 15 is meshed with the worm 19, and then the motor 14 is started, so that the motor can provide power for the work of the vibrating rod 21, need not to change different devices, occupied the space of pouring the scene when having reduced to use a plurality of devices, only need use a power component to the stirring of concrete raw materials and to the operation of vibrating of concrete in the gypsum mold box simultaneously, consequently reduction in production cost.
7. The spout 27 has been seted up on the lateral wall of box 1, and sliding connection has slider 28 on the spout 27, fixed mounting has installation pole 29 on the slider 28, and fixed mounting has support cover 30 on the installation pole 29, round hole 31 has been seted up on the support cover 30, and install the bearing between round hole 31 and the vibrating rod 21, fixed mounting has two installation pieces 32 on the lateral wall of box 1, and rotate between two installation pieces 32 and be connected with screw rod 33, screw rod 33 and installation pole 29 threaded connection, the cooperation of installation pole 29 and support cover 30, can ensure the stability of vibrating rod 21 installation, cooperation through screw rod 33 and installation pole 29, can adjust the mounting height of vibrating rod 21, be convenient for make it carry out the vibration treatment to the concrete of the different degree of depth in the gypsum mold box, ensure the effect of vibrating.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. The hollow floor concrete pouring method is characterized by comprising the following steps of:
s1: adding a proper amount of concrete raw materials into the box body (1) through the feeding seat (2), enabling the driving mechanism to be connected with the stirring mechanism by controlling the butt joint mechanism, and then enabling the driving mechanism to start to operate to stir the concrete raw materials in the box body (1);
s2: after the concrete raw materials are stirred, the discharge hole (4) is opened through the switch mechanism, the concrete is taken out and injected into a gypsum mold box for casting the hollow floor, the slump of the concrete bottom layer in the gypsum mold box from the harbor is kept between 200 and 220mm, a cavity is easily formed at the bottom when the slump is too small, and the slump of the concrete cast on the surface layer can be 180 and 200 mm;
s3: when the bottom layer poured concrete is within 60mm in thickness, fine stone (within 16mm in particle size) concrete is adopted, and when the bottom layer poured concrete is greater than or equal to 70mm in thickness, common concrete can be adopted;
s4: the thickness of the first pouring of the slab surface is about 2/5 which is not more than the thickness of the whole hollow floor slab;
s5: after the first concrete pouring is finished, moving the stirring and vibrating device, and vibrating a concrete layer in the gypsum mold box by using a vibrating mechanism on the stirring and vibrating device, wherein during vibrating, the concrete layer is vertically inserted, quickly inserted, slowly pulled, does not depend on the gypsum mold box, does not depend on a reinforcing steel bar, does not depend on other embedded parts, does not have vibration leakage, is easy to form a hole due to vibration leakage, has the same vibrating time as that of a common concrete plate, does not generate bubbles, does not remarkably sink, and starts to be subjected to slurry flooding;
s6: finishing the second concrete pouring treatment before the first pouring initial setting (taking C30 concrete as an example, the initial setting time is generally 2 hours in spring and autumn, 1 hour in summer and 3-4 hours in winter), and because the field adopted modes are different (such as a natural pump, a tower crane and the like), the concrete cannot be poured according to the rib jump completely due to overlarge inertia in the pouring process; the phenomenon of cracking, water seepage and the like caused by cold joints can be formed when the interval time between the first pouring and the second pouring is too long, and construction, supervision, design, technical personnel of the company and the like are informed in time when the cold joints do not meet the standard requirements due to various reasons in the pouring process, so that the quality problems of water seepage, cracking and the like in the later period are reduced;
s7: curing the poured concrete, generally, film covering and watering curing is performed, because the gypsum mold box is a water-absorbing product, after demolding, when the temperature exceeds 30 ℃, watermarks can be formed at the upper part and the lower part, and water drops can be formed in the area of the bottom part, the phenomenon is a normal phenomenon that the gypsum mold box performs built-in curing on the concrete, the curing time can be 3-6 months or even longer, and no phenomenon occurs after the water is completely dissipated;
s8: the method comprises the following steps of (1) carrying out formwork removal treatment on the formed hollow floor concrete, wherein the formwork removal time is that the strength of the concrete reaches 100%, sundries, waste slag and the like cannot be accumulated on a plate surface in a centralized manner, manufacturing rooms for steel bar carpenters and the like cannot be arranged on the plate surface, and the construction machines exceeding the designed load are strictly prohibited from entering the plate surface;
the stirring and vibrating device consists of a box body (1), a feeding seat (2), a feeding pipe (3), a discharging hole (4), a switching mechanism, a stirring mechanism, a driving mechanism, a butt joint mechanism and a vibrating mechanism.
2. The concrete pouring method for the hollow floor slab as claimed in claim 1, wherein the feeding base (2) is communicated with the box body (1) through a feeding pipe (3), a plurality of supporting rods (5) are fixedly mounted at the lower end of the box body (1), a universal wheel (6) is mounted at the lower end of each supporting rod (5), and the lower end of the box body (1) is arranged in an inclined mode.
3. The concrete pouring method for the hollow floor slab as claimed in claim 1, wherein the switch mechanism is composed of a through groove, a partition plate (7), a clamping groove, a pulling plate (8) and a plurality of fixing bolts (9), the through groove is formed in the side wall of the box body (1), the partition plate (7) is connected to the through groove in a sliding mode, the clamping groove is formed in the inner wall of the box body (1) and is matched with the partition plate (7), the pulling plate (8) is fixedly installed on one end, located outside the box body (1), of the partition plate (7), and the fixing bolts (9) are connected between the pulling plate (8) and the box body (1) in a threaded mode.
4. The concrete pouring method for the hollow floor slab as claimed in claim 3, wherein the stirring mechanism is composed of a through hole (10), a rotating rod (11) and a plurality of stirring blades (12), the through hole (10) is fixedly installed on the box body (1), the rotating rod (11) is rotatably connected to the through hole (10), the plurality of stirring blades (12) are sequentially and fixedly installed on the side wall of the rotating rod (11) from top to bottom, and the rotating rod (11) is located at the upper end of the partition plate (7).
5. The hollow floor concrete pouring method according to claim 4, characterized in that the driving mechanism is composed of a motor (14), two driving rods (15), a cross clamping rod (16), a cross clamping groove (17) and two installation seats (13), wherein the two installation seats (13) are slidably connected to the box body (1), the motor (14) is fixedly installed between the two installation seats (13), the driving rod (15) is fixedly connected to the output end of the motor (14), the cross clamping rod (16) is fixedly installed at the lower end of the driving rod (15), the cross clamping groove (17) is formed in the rotating rod (11), and the cross clamping groove (17) corresponds to the cross clamping rod (16).
6. The hollow floor concrete pouring method according to claim 5, characterized in that the abutting mechanism is composed of a rotary groove (22), a screw rod (23), a positioning rod (24) and two positioning blocks (25), the rotary groove (22) is formed in the box body (1), the screw rod (23) is rotatably connected to the rotary groove (22), the screw rod (23) is in threaded connection with the corresponding mounting seat (13), the positioning rod (24) is fixedly mounted on the box body (1), the positioning rod (24) is in sliding connection with the other mounting seat (13), the two positioning blocks (25) are respectively and fixedly mounted on the screw rod (23) and the positioning rod (24), and the length of the screw rod (23) is greater than the depth of the cross-shaped clamping groove (17).
7. The concrete pouring method for the hollow floor system as claimed in claim 5, wherein the vibrating mechanism is composed of a support rod (18), a worm (19), a flexible shaft (20), a vibrating rod (21) and a worm wheel (26), the support rod (18) is fixedly installed on the box body (1), the worm (19) is rotatably connected to the support rod (18), the flexible shaft (20) is fixedly installed on the left side of the worm (19), the vibrating rod (21) is fixedly installed on the flexible shaft (20), the worm wheel (26) is fixedly installed on the drive rod (15), and the worm wheel (26) is matched with the worm (19).
8. The hollow floor concrete pouring method according to claim 7, characterized in that a sliding groove (27) is formed in the side wall of the box body (1), a sliding block (28) is connected to the sliding groove (27) in a sliding manner, a mounting rod (29) is fixedly mounted on the sliding block (28), a supporting sleeve (30) is fixedly mounted on the mounting rod (29), a round hole (31) is formed in the supporting sleeve (30), a bearing is mounted between the round hole (31) and the vibrating rod (21), two mounting blocks (32) are fixedly mounted on the side wall of the box body (1), a screw rod (33) is rotatably connected between the two mounting blocks (32), and the screw rod (33) is in threaded connection with the mounting rod (29).
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| CN202210453619.2A CN114645595A (en) | 2022-04-27 | 2022-04-27 | Concrete pouring method for hollow floor system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2379362A1 (en) * | 1977-02-07 | 1978-09-01 | Cab Centrales A Beton | Series produced large concrete components - uses semi-gantries for pouring unit and crane pivoting on supply tower |
| CN105133768A (en) * | 2015-08-21 | 2015-12-09 | 上海宝冶集团有限公司 | Cast-in-place hollow floor provided with large-section BDF box bodies and construction method of cast-in-place hollow floor |
| CN110173119A (en) * | 2019-06-27 | 2019-08-27 | 中核华辰建筑工程有限公司 | A kind of pumping of concrete construction is vibrated integrated equipment |
| CN111379366A (en) * | 2020-03-19 | 2020-07-07 | 中国建筑一局(集团)有限公司 | Hollow floor construction method adopting gypsum mold box and hollow floor structure |
| CN112324143A (en) * | 2020-11-14 | 2021-02-05 | 深圳市罗湖建筑安装工程有限公司 | Concrete pouring construction equipment and method |
-
2022
- 2022-04-27 CN CN202210453619.2A patent/CN114645595A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2379362A1 (en) * | 1977-02-07 | 1978-09-01 | Cab Centrales A Beton | Series produced large concrete components - uses semi-gantries for pouring unit and crane pivoting on supply tower |
| CN105133768A (en) * | 2015-08-21 | 2015-12-09 | 上海宝冶集团有限公司 | Cast-in-place hollow floor provided with large-section BDF box bodies and construction method of cast-in-place hollow floor |
| CN110173119A (en) * | 2019-06-27 | 2019-08-27 | 中核华辰建筑工程有限公司 | A kind of pumping of concrete construction is vibrated integrated equipment |
| CN111379366A (en) * | 2020-03-19 | 2020-07-07 | 中国建筑一局(集团)有限公司 | Hollow floor construction method adopting gypsum mold box and hollow floor structure |
| CN112324143A (en) * | 2020-11-14 | 2021-02-05 | 深圳市罗湖建筑安装工程有限公司 | Concrete pouring construction equipment and method |
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