CN111519840A - Pouring method for high and large concrete frame column - Google Patents
Pouring method for high and large concrete frame column Download PDFInfo
- Publication number
- CN111519840A CN111519840A CN202010381815.4A CN202010381815A CN111519840A CN 111519840 A CN111519840 A CN 111519840A CN 202010381815 A CN202010381815 A CN 202010381815A CN 111519840 A CN111519840 A CN 111519840A
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- pouring
- concrete
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- template
- vibrating
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/34—Columns; Pillars; Struts of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
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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
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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
- 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 provides a pouring method of a tall concrete frame column, which comprises the following steps: binding column reinforcing steel bars to form a reinforcing cage, reserving a plurality of vibrating holes at the edge of the reinforcing cage, and reserving a pouring hole at the center of the reinforcing cage; erecting a template around the reinforcement cage, and reserving a drainage port at the bottom of the template; watering the template and the reinforcement cage to moisten the template and the reinforcement cage, and discharging redundant water to the bottom of the pouring cavity from a water outlet; plugging the water outlet; pouring a layer of mortar at the bottom of the pouring cavity by the pipe; utilizing a blanking guide pipe to inject concrete into the pouring cavity one by one to obtain a concrete column; and vibrating the concrete column. Through reserving the outlet, unnecessary water can discharge through the outlet fast to prevent to pour the chamber bottom and appear ponding and cause the mashed root of concrete frame post, guarantee concrete frame post's intensity and bearing capacity. In addition, through improving the technique of vibrating, can be fast with the concrete tap, and prevent that the inside hole from appearing of concrete frame post, guarantee construction quality.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a pouring method for a tall concrete frame column.
Background
The high and large reinforced concrete frame column is a reinforced concrete frame column with the height larger than 8 meters, is a commonly used support column for a factory building, plays a role in bearing, has higher strength, has quality meeting requirements, and cannot have the defects of root rot, honeycombs, pitted surfaces, holes and the like. The existing concrete frame column pouring process comprises the following steps: the concrete frame column manufactured by the conventional method often has root rot, the qualification rate is only about 50%, unqualified concrete frame columns are required to be poured again, and the construction efficiency and the cost are seriously influenced.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a concrete frame column pouring method, which can prevent the bottom root rot of the concrete frame column and improve the construction efficiency.
The technical scheme adopted by the invention for solving the technical problems is as follows: the pouring method of the tall concrete frame column comprises the following steps:
A. binding column reinforcing steel bars to form a reinforcing cage, reserving a plurality of vibrating holes at the edge of the reinforcing cage, and reserving a pouring hole at the center of the reinforcing cage;
B. erecting a template around the reinforcement cage, wherein the template encloses a pouring cavity, and a drainage port is reserved at the bottom of the template;
C. watering the template and the reinforcement cage to moisten the template and the reinforcement cage, and discharging redundant water to the bottom of the pouring cavity from a water outlet;
D. plugging the water outlet;
E. a blanking guide pipe extends into the pouring hole from the top of the pouring hole, and a layer of mortar is poured at the bottom of the pouring cavity by the blanking guide pipe;
F. utilizing a blanking guide pipe to inject concrete into the pouring cavity one by one to obtain a concrete column;
G. inserting a vibrating rod into the concrete column from the middle position of the concrete column, and vibrating the concrete column for the first time; then inserting even number of vibrating rods into the concrete column from vibrating holes at four corners of the concrete column, and carrying out secondary vibration on the concrete column; and then inserting even number of vibrating rods into the concrete column from vibrating holes at the edge of the concrete column to symmetrically vibrate the concrete column.
Further, in step G, the outer surface of the template is tapped with a carpenter hammer to listen to the sound produced by the tapping, and if echo occurs in the air area, the tapping is performed again.
Further, in the step D, the blocking plate made of the same material as the template is placed into the water outlet, and the edge of the blocking plate is connected with the template in a welding mode.
Furthermore, in the step E, the distance from the lower end of the blanking guide pipe to the pouring surface is less than or equal to 1m, and the thickness of the mortar is 50-100 mm.
Further, in the step F, in each blanking, the distance from the blanking guide pipe to the pouring surface is less than or equal to 1m, the blanking height is less than or equal to 1.5m, and the time interval between two adjacent blanking is 30-60 min.
Further, the drain port is a rectangular port having a length of 100mm and a width of 500 mm.
Further, in the step G, two vibrating rods are adopted for secondary vibration and symmetric vibration.
Further, the outer diameter of the blanking conduit is 200 mm.
The invention has the beneficial effects that: the water outlet is reserved at the bottom of the template, and redundant water can be quickly discharged to the outside of the pouring cavity through the water outlet, so that accumulated water at the bottom of the pouring cavity is prevented from causing the root rot of the concrete frame column, and the strength and the supporting capacity of the concrete frame column are guaranteed. In addition, through improving the technique of vibrating, can be fast with the concrete tap, and prevent that the inside hole from appearing of concrete frame post, guarantee construction quality.
Drawings
FIG. 1 is a schematic top view of a reinforcement cage;
FIG. 2 is a schematic front view of a setting template;
FIG. 3 is a schematic illustration of a casting mortar;
FIG. 4 is a schematic illustration of poured concrete;
FIG. 5 is a schematic view of primary vibration;
FIG. 6 is a schematic illustration of secondary vibration;
FIG. 7 is a schematic illustration of symmetric vibration;
reference numerals: 1-column reinforcing steel bar; 2-vibrating holes; 3, pouring holes; 4, template; 5, a water outlet; 6, a blanking conduit; 7-mortar; 8-a concrete column; and 9, vibrating a rod.
Detailed Description
When the conventional construction process is adopted, a large number of concrete frame columns with root rot phenomena exist, the applicant researches the reasons of the root rot phenomena carefully, and finds that a small amount of accumulated water exists in a pouring cavity before most of the concrete frame columns with root rot are poured, the accumulated water is generated in the wetting process, the wetting process is to water the inner side of a template and a reinforcing steel bar so that the inner side of the template and the reinforcing steel bar are kept in a wetting state, so that the local hardening of concrete caused by water absorption of the template and the reinforcing steel bar during the concrete pouring is prevented, but because the existing template encloses a sealed pouring cavity, excessive water flows to the bottom of the pouring cavity and generates accumulated water, and the accumulated water causes the root rot of the poured concrete frame columns and influences the bearing capacity. In response to this phenomenon, the applicant has made improvements to the prior art.
The invention is further illustrated with reference to the following figures and examples.
The pouring method of the tall concrete frame column comprises the following steps:
A. as shown in fig. 1, a reinforcement cage is formed by binding column reinforcements 1, a plurality of vibrating holes 2 are reserved at the edge of the reinforcement cage, and a pouring hole 3 is reserved at the center of the reinforcement cage. The steel reinforcement cage plays the effect of reinforcing frame post intensity, and the steel reinforcement cage is formed by many vertical post reinforcing bars 1 and many horizontally post reinforcing bars 1 ligature each other. The vibrating hole 2 is used for vibrating the concrete after pouring to ensure that the concrete is compact, the pouring hole 3 is used for pouring the concrete to the bottom of the pouring cavity, and the size of the pouring hole 3 meets the requirement that the blanking guide pipe 6 with the outer diameter of 200mm can stretch into the pouring cavity.
B. A formwork 4 is erected around the reinforcement cage, the formwork 4 encloses a pouring cavity, and a drainage port 5 is reserved at the bottom of the formwork 4, as shown in fig. 2. The water outlet 5 is used for discharging excessive accumulated water for wetting, the water outlet 5 can be in a semicircular shape, a trapezoidal shape and the like and is positioned at the lowest end of the template 4, and preferably, the water outlet 5 is a rectangular opening with the length of 100mm and the width of 500 mm.
C. And watering the template 4 and the reinforcement cage to moisten the template 4 and the reinforcement cage, and enabling the redundant water to flow to the bottom of the pouring cavity and be discharged from the water outlet 5. Due to the arrangement of the water outlet 5, sufficient water can be poured into the template 4 and the reinforcement cage, the template 4 and the reinforcement cage are fully wet, and accumulated water cannot be generated.
D. After all the excess water is discharged from the water discharge port 5, the water discharge port 5 is closed. In order to ensure that the inner side of the water outlet 5 after being blocked is smooth, the water outlet 5 is blocked by adopting a blocking plate made of the same material as the template 4, specifically, the blocking plate made of the same material as the template 4 is placed into the water outlet 5, and the edge of the blocking plate is welded with the template 4, so that good sealing performance can be ensured.
E. A blanking conduit 6 extends into the pouring hole 3 from the top of the pouring hole 3, the outer diameter of the blanking conduit 6 is 200mm, and a layer of mortar 7 is poured at the bottom of the pouring cavity by using the blanking conduit 6, as shown in fig. 3. The mortar 7 can play a role in buffering, so that concrete poured at the back is prevented from directly colliding with the ground, and the probability of segregation phenomenon can be reduced. The grade of the mortar 7 is consistent with that of the concrete to be poured so as to ensure that the concrete and the mortar are fully combined and prevent the defects of cracks and the like. The distance from the lower end of the blanking guide pipe 6 to a pouring surface (namely the ground) is less than or equal to 1m, and the thickness of the mortar 7 is 50mm to 100 mm.
F. Concrete is injected into the casting cavity one by using the blanking guide pipe 6 to obtain a concrete column 8, as shown in fig. 4. During each blanking, the distance from the blanking guide pipe 6 to a pouring surface (namely the top surface of the poured concrete column) is less than or equal to 1m, the blanking height (namely the height of the concrete column poured each time) is less than or equal to 1.5m, the time interval between two adjacent blanking is 30-60 min, and the time interval between the blanking is less than the initial setting time of the concrete, so that the strength of the whole concrete column is ensured.
G. Inserting a vibrating rod 9 into the concrete column 8 from the middle position of the concrete column 8, and vibrating the concrete column 8 for the first time, as shown in fig. 5; then, inserting even number of vibrating rods 9 into the concrete column 8 from the vibrating holes 2 at four corners of the concrete column 8, and carrying out secondary vibration on the concrete column 8, as shown in fig. 6; then, an even number of vibrating rods 9 are inserted into the concrete column 8 from the vibrating holes 2 at the edge of the concrete column 8, and the concrete column 8 is vibrated symmetrically, as shown in fig. 7. The adoption of the vibrating mode can effectively improve the uniformity of the vibrated concrete and simultaneously avoid the phenomena of leakage vibration, which cause common quality problems of honeycombs, pitted surfaces, holes and the like.
When vibrating, the outer surface of the template 4 is knocked by a carpenter hammer to listen to the sound generated by knocking, and if the sound in the air holes appears, the sound indicates that holes possibly exist in the concrete column, and the vibration is carried out again to eliminate the defects of the holes and the like.
Two vibrating rods 9 are adopted during secondary vibration and symmetrical vibration.
According to the invention, the water outlet 5 is reserved at the bottom of the template 4, and redundant water can be quickly discharged out of the pouring cavity through the water outlet 5, so that the root rot of the concrete frame column caused by water accumulation at the bottom of the pouring cavity is prevented, and the strength and the supporting capacity of the concrete frame column are ensured. In addition, by improving the vibrating process, the concrete can be quickly vibrated to compact, the common quality problems of honeycombs, pitted surfaces, holes, exposed ribs and the like of the concrete of the high and large concrete frame column can be effectively reduced and eliminated, and the uniform color and luster of the concrete can be effectively ensured and the overall impression quality can be improved.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by 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 (8)
1. The pouring method of the tall concrete frame column is characterized by comprising the following steps:
A. binding column reinforcements (1) to form a reinforcement cage, reserving a plurality of vibrating holes (2) at the edge of the reinforcement cage, and reserving a pouring hole (3) at the center of the reinforcement cage;
B. erecting a template (4) around the reinforcement cage, wherein the template (4) encloses a pouring cavity, and a drainage port (5) is reserved at the bottom of the template (4);
C. watering the template (4) and the reinforcement cage to moisten the template (4) and the reinforcement cage, and discharging redundant water from the water outlet (5) after flowing to the bottom of the pouring cavity;
D. the water outlet (5) is sealed;
E. a blanking guide pipe (6) extends into the pouring hole (3) from the top of the pouring hole (3), and a layer of mortar (7) is poured at the bottom of the pouring cavity by the blanking guide pipe (6);
F. utilizing a blanking guide pipe (6) to inject concrete into the pouring cavity one by one to obtain a concrete column (8);
G. inserting a vibrating rod into the concrete column (8) from the middle position of the concrete column (8), and vibrating the concrete column (8) for the first time; then, inserting even number of vibrating rods into the concrete column (8) from vibrating holes (2) at four corners of the concrete column (8), and vibrating the concrete column (8) for the second time; and then, inserting even number of vibrating rods into the concrete column (8) from the vibrating holes (2) at the edge of the concrete column (8) to symmetrically vibrate the concrete column (8).
2. The method of pouring a tall concrete frame column of claim 1, wherein: in step G, the outer surface of the template (4) is knocked by a carpenter hammer, the sound generated by knocking is listened to, and if echo occurs in the air area, vibration is carried out again.
3. The method of pouring a tall concrete frame column of claim 1, wherein: and D, placing the plugging plate made of the same material as the template (4) into the water outlet (5), and welding and connecting the edge of the plugging plate with the template (4).
4. The method of pouring a tall concrete frame column of claim 1, wherein: in the step E, the distance from the lower end of the blanking guide pipe (6) to the pouring surface is less than or equal to 1m, and the thickness of the mortar (7) is 50-100 mm.
5. The method of pouring a tall concrete frame column of claim 1, wherein: in the step F, during each blanking, the distance from the blanking guide pipe (6) to the pouring surface is less than or equal to 1m, the blanking height is less than or equal to 1.5m, and the time interval between two adjacent blanking is 30-60 min.
6. The method of pouring a tall concrete frame column of claim 1, wherein: the water outlet (5) is a rectangular opening with the length of 100mm and the width of 500 mm.
7. The method of pouring a tall concrete frame column of claim 1, wherein: and G, adopting two vibrating rods for secondary vibration and symmetric vibration.
8. The method of pouring a tall concrete frame column of claim 1, wherein: the outer diameter of the blanking conduit (6) is 200 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010381815.4A CN111519840A (en) | 2020-05-08 | 2020-05-08 | Pouring method for high and large concrete frame column |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010381815.4A CN111519840A (en) | 2020-05-08 | 2020-05-08 | Pouring method for high and large concrete frame column |
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| Publication Number | Publication Date |
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| CN111519840A true CN111519840A (en) | 2020-08-11 |
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| CN202010381815.4A Pending CN111519840A (en) | 2020-05-08 | 2020-05-08 | Pouring method for high and large concrete frame column |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113250462A (en) * | 2021-06-09 | 2021-08-13 | 中国电建集团四川工程有限公司 | Construction method of self-compacting concrete |
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2020
- 2020-05-08 CN CN202010381815.4A patent/CN111519840A/en active Pending
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| ES410995A1 (en) * | 1972-01-27 | 1975-12-01 | Entreprises Soc Gle | Vertical, multistage-flash, falling film column for distilling brine |
| CN201714081U (en) * | 2010-05-25 | 2011-01-19 | 中建三局建设工程股份有限公司 | Cylindrical steel template with cleaning hole device |
| CN105201204A (en) * | 2014-09-23 | 2015-12-30 | 中建四局第三建筑工程有限公司 | Method and structure for preventing root rotting in pouring process of column legs of reinforced concrete columns |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113250462A (en) * | 2021-06-09 | 2021-08-13 | 中国电建集团四川工程有限公司 | Construction method of self-compacting concrete |
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Application publication date: 20200811 |