CN114412172A - Construction method of concrete column - Google Patents
Construction method of concrete column Download PDFInfo
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- CN114412172A CN114412172A CN202210104975.3A CN202210104975A CN114412172A CN 114412172 A CN114412172 A CN 114412172A CN 202210104975 A CN202210104975 A CN 202210104975A CN 114412172 A CN114412172 A CN 114412172A
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- 238000010276 construction Methods 0.000 title claims abstract description 42
- 239000002002 slurry Substances 0.000 claims abstract description 38
- 238000000034 method Methods 0.000 claims abstract description 16
- 238000009415 formwork Methods 0.000 claims description 31
- 229910000831 Steel Inorganic materials 0.000 claims description 22
- 239000010959 steel Substances 0.000 claims description 22
- 239000004570 mortar (masonry) Substances 0.000 claims description 17
- 230000000452 restraining effect Effects 0.000 claims description 15
- 239000004575 stone Substances 0.000 claims description 15
- 239000004576 sand Substances 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 239000004568 cement Substances 0.000 claims description 8
- 230000007704 transition Effects 0.000 claims description 7
- 239000010881 fly ash Substances 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- 239000000654 additive Substances 0.000 claims description 5
- 230000000996 additive effect Effects 0.000 claims description 5
- 230000008569 process Effects 0.000 abstract description 11
- 238000005204 segregation Methods 0.000 abstract description 4
- 239000000178 monomer Substances 0.000 description 36
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- 238000012360 testing method Methods 0.000 description 6
- 238000007667 floating Methods 0.000 description 5
- 239000004034 viscosity adjusting agent Substances 0.000 description 5
- 241000264877 Hippospongia communis Species 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000006259 organic additive Substances 0.000 description 1
- -1 polyoxyethylene Polymers 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229910021487 silica fume Inorganic materials 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
- 229920001285 xanthan gum Polymers 0.000 description 1
- 229940082509 xanthan gum Drugs 0.000 description 1
- 235000010493 xanthan gum Nutrition 0.000 description 1
- 239000000230 xanthan gum Substances 0.000 description 1
Images
Classifications
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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
- E04G13/00—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills
- E04G13/02—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for columns or like pillars; Special tying or clamping means therefor
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
-
- 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
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
-
- 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
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
- E04G17/06—Tying means; Spacers ; Devices for extracting or inserting wall ties
- E04G17/065—Tying means, the tensional elements of which are threaded to enable their fastening or tensioning
- E04G17/0655—Tying means, the tensional elements of which are threaded to enable their fastening or tensioning the element consisting of several parts
-
- 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
Abstract
The invention relates to the technical field of constructional engineering, and provides a construction method of a concrete column. According to the invention, the chute is utilized to convey the corresponding slurry into the template structure of the concrete column for pouring, so that the segregation phenomenon in the pouring process can be effectively avoided, and the construction quality is improved; meanwhile, the construction method can be used for pouring the concrete column at one time, effectively improves the construction efficiency on the basis of ensuring the construction quality and shortens the construction period.
Description
Technical Field
The invention relates to the technical field of constructional engineering, in particular to a construction method of a concrete column.
Background
Concrete column is common concrete bearing structure in the industry factory building, and traditional concrete column often adopts the mode of day pump or tower crane cooperation funnel to carry out the construction at the actual in-process of pouring. The height of the concrete column is matched with the floor height of an industrial factory building, the standard floor height of the industrial factory building is generally higher (generally about 4-5 m), so that the corresponding concrete column is also higher, if the concrete column is constructed in a conventional pouring mode, the concrete slurry is easy to separate in the falling process due to the large free fall of concrete, and the quality problems of honeycombs, pitted surfaces and the like are easy to occur on the surface of the concrete column after the mould is removed.
Therefore, in the prior art, a concrete column is usually poured in a layered pouring mode, and the problems of long construction period and increased construction cost often exist in the mode. In addition, there is a method of placing a soft conduit at a pump port of a ceiling pump, and since the pumping pressure is generally relatively high, the soft conduit is likely to be separated from the pump port, and the soft conduit is also likely to be damaged.
Disclosure of Invention
The invention aims to provide a construction method of a concrete column, which can effectively avoid the segregation phenomenon in the concrete column pouring process and prevent the quality defects of honeycombs, pitted surfaces and the like on the surface of the concrete column after the form removal.
The embodiment of the invention is realized by the following technical scheme:
a construction method of a concrete column comprises the following steps:
s1, constructing a steel bar structure and a template structure of a concrete column;
s2, preparing concrete slurry;
s3, stopping up the funnel filled with the concrete slurry by using a tower crane, connecting a discharge port of the funnel with a chute, extending the discharge port of the chute into a template structure of the concrete column, and immediately starting to pour the concrete column until all parts of the concrete column are poured;
and S4, maintaining the concrete column until the form is removed.
Optionally, in step S2, the concrete slurry includes the following components in parts by weight:
300 parts of cement, 60 parts of stone powder, 70 parts of fly ash, 150 parts of dry sand, 710 parts of washed sand, 600 parts of broken stone, 300 parts of fine stone, 150 parts of water and 8 parts of an additive.
Optionally, in step S3, before the concrete column is poured with the concrete slurry, mortar with the same label as the concrete slurry is prepared, then the funnel filled with the mortar is lifted with a tower crane, and the discharge port of the funnel is connected to a chute, and the discharge port of the chute extends to the inner bottom of the formwork structure of the concrete column, so as to pour the concrete column at the inner bottom of the formwork structure of the concrete column to form a pile bottom.
Further, the mortar comprises the following components in parts by weight:
330 parts of cement, 90 parts of stone powder, 70 parts of fly ash, 250 parts of dry sand, 710 parts of washed sand, 200 parts of fine stone, 150 parts of water and 9 parts of an additive.
Further, the thickness of the pile bottom is 30-50 mm.
Optionally, the formwork structure of the concrete column comprises a plurality of side formworks, a plurality of vertical back ridges and a plurality of transverse restraining units, and the plurality of transverse restraining units are arranged at intervals at certain intervals along the height direction of the side formworks;
the side templates correspond to the side walls of the concrete columns one by one, and the vertical back ridges are arranged on the outer sides of the side templates;
the transverse restraining unit comprises steel pipes and split bolts, the steel pipes are arranged on the outer sides of the vertical back ridges and are abutted against the vertical back ridges, and two adjacent steel pipes are in staggered lap joint and are connected through hoop buckles; the number of the split bolts is at least two, and the two opposite side templates are connected through one split bolt.
Furthermore, the side form plate is provided with a through hole for the screw rod of the split bolt to pass through, a sealing gasket is arranged on the outer side of the side form plate at the through hole, and the screw rod of the split bolt passes through the sealing gasket.
Furthermore, two steel pipes corresponding to each side template in each transverse restraining unit are arranged at intervals along the height direction of the side templates at a certain interval.
Optionally, in step S2, when the concrete column is cast with the concrete slurry, the concrete slurry is vibrated by the vibrating rods, the vibrating positions are four corners and the middle of the concrete column, and the diagonal corners of the concrete column are vibrated first and then the middle of the concrete column is vibrated.
Optionally, the chute is including the slope section, arc changeover portion and the flexible section that connect gradually, the slope section with the discharge gate of funnel corresponds, flexible section is extending structure, the discharge gate of flexible section stretches into to the interior bottom of the template structure of concrete column.
The technical scheme of the embodiment of the invention at least has the following advantages and beneficial effects:
1. according to the invention, the chute is utilized to convey the corresponding slurry into the template structure of the concrete column for pouring, so that the segregation phenomenon in the pouring process can be effectively avoided, and the construction quality is improved; meanwhile, the construction method can be used for pouring the concrete column at one time, effectively improves the construction efficiency on the basis of ensuring the construction quality and shortens the construction period.
2. The concrete provided by the invention has the advantages of high cohesiveness, good fluidity, large slump and the like, the strength of the concrete is superior to that of common concrete, and the quality of the concrete column after the concrete is poured can be effectively improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a part of a formwork structure of a concrete column provided in embodiment 1 of the present invention;
fig. 2 is a top view of a formwork structure of a concrete column provided in embodiment 1 of the present invention;
fig. 3 is a schematic structural diagram of pouring by using a funnel and a chute provided in embodiment 2 of the present invention;
fig. 4 is a schematic structural view of a telescopic section of a chute provided in embodiment 2 of the present invention.
Icon: 1-side template, 2-vertical back edge, 3-transverse restraining unit, 301-steel tube, 302-split bolt, 3021-screw rod, 3022-backing plate, 3023-nut, 303-buckle, 304-sealing gasket, 4-funnel, 5-chute, 501-inclined section, 502-arc transition section, 503-telescopic section, 5031-first chute monomer, 5032-second chute monomer, 5033-third chute monomer, 5034-linear driving device, 6-manual operation platform, 7-connecting bracket, 8-upper floating plate and 10-concrete column.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. 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.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the product of this application is used, the description is merely for convenience and simplicity of description, and it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
The embodiment provides a construction method of a concrete column, which comprises the following steps:
s1, a steel bar structure and a template structure applied to a concrete column 10.
The steel bar structure inside the concrete column 10 can be implemented according to design requirements, and will not be described in detail herein. Referring to fig. 1 and 2, a formwork structure of a concrete column 10 includes a side formwork 1, a vertical back ridge 2, and a horizontal restraining unit 3.
The side templates 1 correspond to the side walls of the concrete column 10 one by one, so that a forming cavity for pouring the concrete column 10 is formed by surrounding a plurality of side templates 1; simultaneously, the stupefied 2 of vertical back of the body locates the side form 1 outside, and the stupefied 2 of vertical back of the body that every side form 1 outside set up is a plurality of, and a plurality of stupefied 2 of vertical back of the body are with certain interval parallel arrangement to through stupefied 2 improvement side form 1's structural strength of a plurality of vertical backs of the body and the stability when pouring.
Meanwhile, the plurality of transverse restraining units 3 are also arranged, and the plurality of transverse restraining units 3 are arranged at intervals along the height direction of the side formwork 1, so that the side formwork 1 is further fixed by means of the transverse restraining units 3.
Specifically, with continued reference to fig. 1 and 2, the transverse restraint unit 3 includes a steel pipe 301 and a split bolt 302, the steel pipe 301 is disposed outside the vertical back ridge 2 and is abutted against the outer side wall of the vertical back ridge 2, and two adjacent steel pipes 301 are overlapped in a staggered manner and connected by a buckle 303; it can be understood that, two steel pipes 301 corresponding to each side formwork 1 in each transverse restraining unit 3 are arranged at intervals along the height direction of the side formwork 1, so that the stability of the side formwork 1 during pouring is improved through the cooperative cooperation of the steel pipes 301, and the construction quality is further improved. Meanwhile, the number of the split bolts 302 is at least two, and the two opposite sideforms 1 are connected through one split bolt 302 to fix the sideform 1 through the split bolt 302.
With reference to fig. 2, the split bolt 302 includes a screw 3021, a backing plate 3022 and a nut 3023 are disposed at both ends of the screw 3021, and the side mold plate 1 is provided with a through hole through which the screw 3021 of the split bolt 302 passes; when the steel pipe formwork is installed, one end of the screw rod 3021 sequentially penetrates through the two side formworks 1, the two ends of the screw rod 3021 are located on the outer sides of the corresponding steel pipes 301, then the base plate 3022 is installed, the base plate 3022 is abutted to the steel pipes 301, and then the nut 3023 is installed to lock the screw rod 3021. It should be noted that the screw rods 3021 of the two split bolts 302 of the same transverse restraining unit 3 should be staggered to avoid interference.
Meanwhile, the side template 1 is provided with a through hole for the screw rod 3021 to pass through, so that slurry leakage is easy to occur at the through hole in the actual pouring process; for this reason, the outer side of the sideform 1 at the through hole in this embodiment is further provided with the sealing gasket 304, the screw 3021 of the counter bolt 302 passes through the sealing gasket 304 and then is locked by the corresponding backing plate 3022 and the nut 3023, and in actual implementation, the vertical back edge 2 arranged on the outer side of the sideform 1 can be used for compressing the sealing gasket 304, so that the stability of the sealing gasket 304 is improved. So set up, can effectively avoid appearing leaking the thick liquid phenomenon at pouring in-process through-hole department through addding sealed pad 304 to guarantee construction quality.
S2, after the reinforcing steel bar structure and the template structure of the concrete column 10 are finished, mortar and concrete slurry are prepared; it should be noted that, in the actual construction process, mortar and concrete slurry may be prepared first and then applied to the reinforcement structure and the formwork structure of the concrete column 10, or mortar and concrete slurry may be prepared and applied to the reinforcement structure and the formwork structure of the concrete column 10, and the success of the construction in steps S1 and S2 is not limited herein.
The mortar has the same label as the concrete slurry to ensure the consistency of the overall structural performance of the poured concrete column 10.
Specifically, the mortar comprises the following components:
330Kg of cement, 90Kg of stone powder, 70Kg of fly ash, 250Kg of dry sand, 710Kg of washed sand, 200Kg of fine stone, 150Kg of water and 9Kg of admixture.
The concrete slurry comprises the following components:
300Kg of cement, 60Kg of stone powder, 70Kg of fly ash, 150Kg of dry sand, 710Kg of washed sand, 600Kg of crushed stone, 300Kg of fine stone, 150Kg of water and 8Kg of admixture.
It should be noted that the concrete slurry prepared by the above mixing ratio has the advantages of high cohesiveness, good fluidity, slump larger than that of common concrete, etc., effectively reduces the usage amount of cement, reduces the construction cost, and improves the quality of the concrete column 10 formed by final pouring.
Wherein, the admixtures in the mortar and the concrete slurry are respectively an organic admixture and an inorganic admixture. The organic additive is a polycarboxylic water reducer and a viscosity modifier, and the viscosity modifier is xanthan gum and polyoxyethylene; the inorganic additive is a water-absorbing swelling agent inorganic material formed by mixing a water reducing agent and a viscosity modifier, and the viscosity modifier comprises bentonite, silica fume and ground asbestos, so that the viscosity modifier has a larger specific surface area to improve the water-retaining capacity of the slurry.
And S3, after the mortar and the concrete slurry are prepared and the reinforcing steel bar structure and the template structure of the concrete column 10 are applied, pouring the concrete column 10.
Firstly, filling prepared mortar into a funnel 4, then hoisting the funnel 4 to the upper part of a template structure of a concrete column 10 by using a tower crane, and connecting a chute 5 made of PVC material at a discharge port of the funnel 4; it should be noted that the discharge opening of the funnel is provided with a plugging valve for plugging the funnel 4. And the discharge hole of the chute 5 extends into the inner bottom of the template structure of the concrete column 10, at the moment, the blocking valve of the funnel 4 is opened, mortar in the funnel 4 flows into the template structure of the concrete column 10 through the chute 5 so as to pour the inner bottom of the template structure of the concrete column 10 to form the pile bottom of the concrete column 10, and the thickness of the pile bottom is preferably 30-50 mm. The bottom of the concrete column 10 is formed by pouring mortar with the same grade as the concrete slurry, so that the slurry leakage phenomenon at the bottom of the concrete column 10 can be effectively avoided when the concrete slurry is poured, and a part of cement at the bottom of the concrete column 10 is supplemented to ensure the construction quality; meanwhile, the mortar can also play a role in wetting the chute 5, so that a large amount of concrete slurry is prevented from remaining in the chute 5 when the concrete slurry is poured.
After the bottom of the concrete column 10 is formed by pouring, the funnel 4 filled with concrete slurry is lifted by using a tower crane, and at the moment, the concrete slurry in the funnel 4 enters the template structure of the concrete column 10 through the chute 5 to begin to pour the rest part of the concrete column 10 until all parts of the concrete column 10 are poured.
In addition, a vibrating rod is properly used for vibrating in the pouring process so as to ensure the construction quality. Wherein, the vibration positions are four corners and the middle part of the concrete column 10, and the diagonal of the concrete column 10 is vibrated firstly and then the middle part of the concrete column 10 is vibrated, so as to further improve the vibration effect.
Therefore, in the embodiment, the chute 5 is used for conveying the corresponding slurry to the interior of the template structure of the concrete column 10 for pouring, so that the segregation phenomenon in the pouring process can be effectively avoided, and the construction quality is improved; meanwhile, the construction method can be used for pouring the concrete column 10 at one time, so that the construction efficiency is effectively improved on the basis of ensuring the construction quality, and the construction period is shortened.
And S4, after the concrete column 10 is poured and initially set, maintaining the concrete column 10 until the form is removed. During maintenance, a small amount of water is poured into the concrete column 10 to keep the concrete column moist, and the form is removed after the concrete column 10 does not fall off corners and adhere to the form.
In order to more visually recognize the use effect of the concrete slurry at the mixing ratio in the step S2, the strength test results of the concrete test block shown in table 1 below were obtained by performing the strength test on the corresponding concrete test block.
TABLE 1 Strength test results of concrete test blocks
| Age/day | 3D | 7D | 28D | 60D |
| strength/Mpa | 27.8 | 32.5 | 40.2 | 43.6 |
As can be seen from table 1, the strength of the concrete at the mixing ratio is higher than that of the common concrete, and the concrete column has the advantages of high cohesiveness, good fluidity, large slump and the like under the condition of meeting the actual construction requirements, and can effectively improve the quality of the concrete column 10 after the concrete column is poured.
Example 2
On the basis of embodiment 1, considering that in the actual pouring process, as the pouring progress is continuously advanced, the concrete surface in the formwork structure of the concrete column 10 is higher and higher, if the conventional chute 5 is arranged, the position of the chute 5 needs to be continuously adjusted and replaced, so that the chute 5 rises along with the rising of the concrete surface in the formwork structure of the concrete column 10, and the whole process is very tedious and time-consuming. For this reason, the present embodiment differs from embodiment 1 only in that the chute 5 used in step S3 is designed to be a telescopic structure to accommodate the height of the concrete face of the formwork structure of the concrete column 10.
Specifically, referring to fig. 3, the chute 5 is composed of an inclined section 501, an arc-shaped transition section 502 and a telescopic section 503 which are connected in sequence. The inclined section 501 corresponds to a discharge hole of the funnel 4, so that slurry can flow into the inclined section 501 when a plugging valve at the bottom of the funnel 4 is opened, and enter the telescopic section 503 after being buffered by the arc transition section 502.
Meanwhile, the telescopic section 503 is a telescopic structure, and a discharge port of the telescopic section 503 extends into the inner bottom of the formwork structure of the concrete column 10. The structure of the telescopic segment 503 is shown in fig. 4, the telescopic segment 503 at least comprises a first chute monomer 5031, a second chute monomer 5032 and a third chute monomer 5033 which are sequentially arranged from top to bottom, a discharge port of the third chute monomer 5033 extends into the interior of the template structure of the concrete column 10, one end of the first chute monomer 5031 is communicated with the arc transition section 502, the other end of the first chute monomer 5031 extends into the interior of the second chute monomer 5032, and the first chute monomer 5031 is in sliding fit with the second chute monomer 5033; preferably, a slide way is arranged on the outer side wall of the first chute monomer 5031, and a slide block adapted to the slide way is arranged on the inner wall of the second chute monomer 5032, so that the slurry in the first chute monomer 5031 can flow into the second chute monomer 5032, and the second chute monomer 5032 can slide along the axial direction of the first chute monomer 5031; next, a linear driving device 5034 is further disposed between the first chute monomer 5031 and the second chute monomer 5032, the linear driving device 5034 is fixed at the bottom of the first chute monomer 5031, and an output end of the linear driving device 5034 is connected to the second chute monomer 5032, so as to drive the second chute monomer 5032 to move along the axial direction of the first chute monomer 5031 through the linear driving device 5034.
By analogy, the connection mode between the second chute monomer 5032 and the third chute monomer 5033 is the same as the connection mode between the first chute monomer 5031 and the second chute monomer 5032, and the third chute monomer 5033 is also driven to move by a linear driving device 5034 independently arranged at the bottom of the second chute monomer 5032. Preferably, the linear driving device 5034 can be a conventional linear driving device 5034 such as an oil cylinder or an air cylinder. In practice, the number of chute units may be increased or decreased as needed, and is not limited herein.
In addition, in practical implementation, the first trough monomer 5031 is located completely above the formwork structure of the concrete column 10, and the length of the first trough monomer 5031 is long enough to allow the lowermost third trough monomer 5033 to completely protrude out of the formwork structure of the concrete column 10 when the telescopic section 503 of the trough 5 is telescopic, so as to complete the casting of the concrete column 10.
It should be noted that, during actual construction, the chute 5 may be fixed according to actual conditions, for example, the chute 5 is fixed by means of another bracket or the manual operation platform 6, and it is required to ensure that the first chute monomer 5031 of the inclined section 501, the arc-shaped transition section 502 and the telescopic section 503 of the chute 5 are all in a fixed state, so as to improve the stability of the chute 5. In this embodiment, a manual operation platform 6 is disposed beside the concrete column 10 as an example, and at this time, the first chute monomer 5031 of the inclined section 501, the arc-shaped transition section 502 and the telescopic section 503 of the chute 5 are all fixed to the manual operation platform 6 through the connecting bracket 7.
In addition, with reference to fig. 3, in practical implementation, the upper floating plate 8 in a horizontal state may be disposed at the discharge port of the third chute monomer 5033 at the lowest position of the telescopic section 503, in a pouring process, the upper floating plate 8 contacts with the uppermost concrete surface in the formwork structure of the concrete column 10, and as the concrete surface in the formwork structure of the concrete column 10 continuously rises, the concrete can provide a buoyancy to the upper floating plate 8, so that the telescopic section 503 of the chute 5 can be more smoothly stretched, and the stability of the telescopic section 503 of the chute 5 during stretching is further improved. Preferably, the upper floating plate 8 extends away from the outlet of the third single chute 5033.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The construction method of the concrete column is characterized by comprising the following steps:
s1, constructing a steel bar structure and a template structure of a concrete column;
s2, preparing concrete slurry;
s3, stopping up the funnel filled with the concrete slurry by using a tower crane, connecting a discharge port of the funnel with a chute, extending the discharge port of the chute into a template structure of the concrete column, and immediately starting to pour the concrete column until all parts of the concrete column are poured;
and S4, maintaining the concrete column until the form is removed.
2. The concrete column construction method according to claim 1, wherein in step S2, the concrete slurry comprises the following components in parts by weight:
300 parts of cement, 60 parts of stone powder, 70 parts of fly ash, 150 parts of dry sand, 710 parts of washed sand, 600 parts of broken stone, 300 parts of fine stone, 150 parts of water and 8 parts of an additive.
3. The method for constructing a concrete column according to claim 1, wherein in step S3, before the concrete column is poured by using the concrete slurry, mortar with the same grade as the concrete slurry is prepared, then a tower crane is used to lift the hopper filled with the mortar, and a discharge port of the hopper is connected with a chute, and the discharge port of the chute extends to the inner bottom of the formwork structure of the concrete column, so as to pour the concrete column to form a bottom of the concrete column.
4. The concrete column construction method according to claim 3, wherein the mortar comprises the following components in parts by weight:
330 parts of cement, 90 parts of stone powder, 70 parts of fly ash, 250 parts of dry sand, 710 parts of washed sand, 200 parts of fine stone, 150 parts of water and 9 parts of an additive.
5. The concrete column construction method according to claim 3, wherein the thickness of the bottom of the column is 30-50 mm.
6. The construction method of the concrete column according to claim 1, wherein the formwork structure of the concrete column comprises a plurality of side formworks, a plurality of vertical back ridges and a plurality of transverse restraining units, and the plurality of transverse restraining units are arranged at intervals along the height direction of the side formworks;
the side templates correspond to the side walls of the concrete columns one by one, and the vertical back ridges are arranged on the outer sides of the side templates;
the transverse restraining unit comprises steel pipes and split bolts, the steel pipes are arranged on the outer sides of the vertical back ridges and are abutted against the vertical back ridges, and two adjacent steel pipes are in staggered lap joint and are connected through hoop buckles; the number of the split bolts is at least two, and the two opposite side templates are connected through one split bolt.
7. The concrete column construction method according to claim 6, wherein the side form plate is provided with a through hole for a screw rod of a split bolt to pass through, a sealing gasket is arranged on the outer side of the side form plate at the through hole, and the screw rod of the split bolt passes through the sealing gasket.
8. The concrete column construction method according to claim 6, wherein two steel pipes are provided in each lateral restraining unit corresponding to each sideform, and the two steel pipes are spaced at a certain interval in a height direction of the sideforms.
9. The method of constructing a concrete column according to claim 1, wherein in step S2, when the concrete column is cast with the concrete slurry, the concrete slurry is vibrated by the vibrating rods at four corners and the middle of the concrete column, and opposite corners of the concrete column are vibrated before the middle of the concrete column.
10. The concrete column construction method according to claim 1 or 3, wherein the chute comprises an inclined section, an arc-shaped transition section and a telescopic section which are sequentially connected, the inclined section corresponds to the discharge port of the funnel, the telescopic section is of a telescopic structure, and the discharge port of the telescopic section extends into the inner bottom of the formwork structure of the concrete column.
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| CN202210104975.3A CN114412172A (en) | 2022-01-28 | 2022-01-28 | Construction method of concrete column |
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| CN204249090U (en) * | 2014-11-06 | 2015-04-08 | 长安大学 | A kind of stepless retractable rotates discharge chute |
| CN205224595U (en) * | 2015-12-25 | 2016-05-11 | 中国化学工程第七建设有限公司 | Reinforced concrete stand structure |
| CN110607905A (en) * | 2019-10-14 | 2019-12-24 | 中建二局第二建筑工程有限公司 | All-steel support reinforced formwork system and construction method |
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| CN204249090U (en) * | 2014-11-06 | 2015-04-08 | 长安大学 | A kind of stepless retractable rotates discharge chute |
| CN205224595U (en) * | 2015-12-25 | 2016-05-11 | 中国化学工程第七建设有限公司 | Reinforced concrete stand structure |
| CN110607905A (en) * | 2019-10-14 | 2019-12-24 | 中建二局第二建筑工程有限公司 | All-steel support reinforced formwork system and construction method |
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