CN115217336B - Large-volume concrete pouring method - Google Patents
Large-volume concrete pouring method Download PDFInfo
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- CN115217336B CN115217336B CN202210930873.7A CN202210930873A CN115217336B CN 115217336 B CN115217336 B CN 115217336B CN 202210930873 A CN202210930873 A CN 202210930873A CN 115217336 B CN115217336 B CN 115217336B
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- concrete
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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
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/16—Structures made from masses, e.g. of concrete, cast or similarly formed in situ with or without making use of additional elements, such as permanent forms, substructures to be coated with load-bearing material
- E04B1/166—Structures made from masses, e.g. of concrete, cast or similarly formed in situ with or without making use of additional elements, such as permanent forms, substructures to be coated with load-bearing material with curved surfaces, at least partially cast in situ in order to make a continuous concrete shell structure
-
- 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
- E04G21/0418—Devices for both conveying and distributing with distribution hose
Abstract
The invention relates to the technical field of mass concrete, and discloses a mass concrete pouring method, which comprises the following construction steps: 1) Dividing the pouring area into a plurality of fan-shaped areas, and dividing the fan-shaped areas into a plurality of arc-shaped areas which are sequentially and adjacently arranged; 2) Sequentially pouring concrete layers with set heights in each arc-shaped area; 3) Repeating the construction step 2) until the concrete layer of each arc-shaped area reaches a set height; 4) Repeating the construction steps 2) and 3) until the concrete layers of the fan-shaped areas are arranged at equal heights; through splitting the pouring area into a plurality of fan-shaped areas, carrying out regional pouring on the fan-shaped areas from the inner end to the outer end, enabling concrete to form a fan shape to flow forwards, then continuing pouring until the concrete layer of each arc-shaped area reaches the design elevation, sequentially gradually advancing, pouring the concrete layer with the set height on each fan-shaped area in sequence, and finally arranging the concrete layers at the same height, so that the construction pouring process is simple and easy to understand.
Description
Technical Field
The invention relates to the technical field of mass concrete, in particular to a mass concrete pouring method.
Background
The concrete is artificial stone which is prepared by mixing cementing materials, water, coarse aggregate and fine aggregate according to a certain proportion, then stirring, transporting, pumping, distributing and pouring the concrete compactly, and curing and hardening the concrete under a certain temperature and proper weather conditions, wherein the concrete structure is a mass concrete with the minimum geometric dimension of not less than 1m or a concrete with harmful cracks caused by temperature change and shrinkage expected to be caused by hydration of the cementing materials in the concrete, and is called as mass concrete;
the pouring of concrete is a very important process in concrete construction, in addition, in the pouring process, the whole continuous pouring difficulty is too large due to the fact that the area is too large or the length is too long, when a plurality of fixed points are poured in the process of pouring large-volume concrete, the pouring building structure is unstable due to the fact that the distance is too far, and in addition, the existing large-volume concrete pouring process is complex in pouring.
Disclosure of Invention
The invention aims to provide a large-volume concrete pouring method, and aims to solve the problem that pouring is complicated when large-volume concrete is poured in the prior art.
The invention discloses a mass concrete pouring method, which comprises the following construction steps:
1) Dividing a pouring area into a plurality of fan-shaped areas, wherein the fan-shaped areas are divided into a plurality of arc-shaped areas which are arranged adjacently in sequence from the inner end to the outer end of the fan-shaped areas;
2) Pouring concrete in the fan-shaped areas by using pumping pipes, wherein the pumping pipes sequentially and outwards pour concrete from the inner ends of the fan-shaped areas, and sequentially pour concrete layers with set heights in each arc-shaped area;
3) Repeating the construction step 2) until the concrete layer of each arc-shaped area of the fan-shaped area reaches a set height;
4) Repeating the construction steps 2) and 3) until the concrete layers of the arc-shaped areas of the fan-shaped areas reach the set height, wherein the concrete layers of the fan-shaped areas are arranged at equal heights.
Further, in the process of pouring concrete, the continuous pouring time of the pumping pipe is longer than the set time period.
Further, the intermittent time for stopping pouring concrete of the pumping pipe in the process of pouring concrete is smaller than the intermittent time period.
Further, the intermittent period of time is 3.5 hours.
Further, in the process of pouring concrete, the concrete layer is provided with an inclined surface; and when the intermittent time of stopping pouring concrete by the pumping pipe is longer than the intermittent time period, a plurality of short steel bars arranged at intervals are inserted into the inclined surface in the intermittent time period.
Further, the length of the short steel bars is between 1m and 1.5 m.
Further, the lower part of the short steel bar is embedded in the concrete layer, the upper part of the short steel bar is exposed on the inclined surface, and the short steel bar is vertically arranged with the inclined surface.
Further, a plurality of short steel bars form a reinforcing group, a plurality of reinforcing groups which are arranged at intervals are arranged on the inclined surface, and in the reinforcing group, a plurality of short steel bars are arranged in a plum blossom shape.
Further, the pumping pipe is provided with a pumping head, a through cavity is arranged in the pumping head, the front end of the pumping head is provided with a pouring opening, the pouring opening is communicated with the through cavity, and the pouring opening is flat;
the concrete enters the through cavity of the pumping head through the pumping pipe, and is poured outwards through the pouring opening from the through cavity.
Further, the height of the through cavity is gradually increased along the direction from outside to inside of the pouring opening; the inner side wall of the through cavity is covered with an elastic layer, the elastic layer is cone-shaped, the top of the elastic layer is provided with a plurality of elastic rubberized walls, and the bottom of the elastic layer is provided with a plurality of elastic lower rubberized walls;
along the direction from outside to inside of the pouring opening, a plurality of rubberizing walls are sequentially arranged at intervals, a plurality of lower rubberizing walls are sequentially arranged at intervals, the rubberizing walls and the lower rubberizing walls are oppositely arranged up and down, and the bottoms of the rubberizing walls are in up-down contact with the tops of the lower rubberizing walls;
when concrete is poured, after the pumping pressure in the pumping pipe is greater than a set value, the concrete impacts and enters the through cavity to mutually separate the upper rubber wall from the lower rubber wall, and the concrete is poured outwards through the pouring opening.
Compared with the prior art, the large-volume concrete pouring method provided by the invention has the advantages that the pouring area is divided into the plurality of fan-shaped areas, the fan-shaped areas are cast in a partition mode from the inner end to the outer end, the concrete forms a fan shape to flow forwards, then the pouring is continued until the concrete layer of each arc-shaped area reaches the design elevation, the concrete layer of each fan-shaped area is sequentially poured to the set height, and finally the concrete layer is arranged at the same height, so that the construction pouring process is simple and easy to understand.
Drawings
FIG. 1 is a schematic construction flow diagram of a method for pouring mass concrete according to the present invention;
FIG. 2 is a plan view of the push-type continuous casting construction provided by the invention;
FIG. 3 is a schematic side sectional rest state configuration of a pumping head provided by the present invention;
fig. 4 is a schematic diagram of a side view cross-section working state structure of a pumping head provided by the invention.
In the figure: fan-shaped region 100, arc-shaped region 200, pumping tube 300, pumping head 400, pouring port 500, elastic layer 600, rubberized wall 700, and rubberized wall 800.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The implementation of the present invention will be described in detail below with reference to specific embodiments.
The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that, if there is an azimuth or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc., based on the azimuth or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus terms describing the positional relationship in the drawings are merely illustrative and should not be construed as limitations of the present patent, and specific meanings of the terms described above may be understood by those skilled in the art according to specific circumstances.
Referring to fig. 1-4, a preferred embodiment of the present invention is provided.
The method for pouring the mass concrete comprises the following construction steps:
1) Dividing the casting area into a plurality of fan-shaped areas 100, and dividing the fan-shaped areas 100 into a plurality of arc-shaped areas 200 which are arranged adjacently in sequence from the inner end to the outer end of the fan-shaped areas 100;
2) Pouring concrete in the fan-shaped areas 100 by using the pumping pipes 300, sequentially pouring concrete outwards from the inner ends of the fan-shaped areas 100 by using the pumping pipes 300, and sequentially pouring concrete layers with set heights in the arc-shaped areas 200;
3) Repeating the construction step 2) until the concrete layer of each arc-shaped area 200 of the fan-shaped area 100 reaches a set height;
4) Repeating the construction steps 2) and 3) until the concrete layer of the arc-shaped areas 200 of the plurality of fan-shaped areas 100 reaches a set height, and the concrete layers of the plurality of fan-shaped areas 100 are arranged at the same height.
According to the large-volume concrete pouring method, the pouring area is divided into the plurality of fan-shaped areas 100, the fan-shaped areas 100 are poured in a zoning mode from the inner end to the outer end, concrete forms a fan shape to flow forwards, then pouring is continued until the concrete layer of each arc-shaped area 200 reaches the design elevation, the concrete layer of each fan-shaped area 100 is poured to a set height in sequence, finally the concrete layers are arranged at the same height, and the construction pouring process is simple and easy to understand.
The pumping pipe 300 is continuously poured for a longer period of time than a set period of time during the process of pouring concrete. In this way, the initial setting time of the concrete can be prolonged.
The intermittent time for stopping the casting of the concrete during the casting of the pumping pipe 300 is less than the intermittent time period of 3.5 hours. In this way, the initial setting of the concrete when the pouring is not finished due to overlong intermittent time is avoided.
In the process of pouring concrete, the concrete layer is provided with an inclined surface; when the intermittent time in which the pumping pipe 300 stops pouring concrete is longer than the intermittent time period, a plurality of short reinforcing bars arranged at intervals are inserted at the inclined surface in the intermittent time.
In this embodiment, when concrete is continuously poured, vibration is required, and after the short steel bars in the concrete are vibrated by the vibrating rod, the short steel bars can secondarily vibrate the surrounding concrete, so that the vibration speed is increased.
The length of the short steel bar is between 1m and 1.5 m; the lower part of the short steel bar is embedded in the concrete layer, the upper part of the short steel bar is exposed on the inclined surface, and the short steel bar is vertically arranged with the inclined surface; the plurality of short steel bars form a reinforcing group, a plurality of reinforcing groups which are arranged at intervals are arranged on the inclined surface, and in the reinforcing group, the plurality of short steel bars are arranged in a plum blossom shape. Thus, the bending resistance and toughness between the concrete layers are improved, and the bearing capacity of the concrete layers is increased.
The pumping pipe 300 is provided with a pumping head 400, a through cavity is arranged in the pumping head 400, the front end of the pumping head 400 is provided with a pouring opening 500, the pouring opening 500 is communicated with the through cavity, and the pouring opening 500 is flat; concrete enters the through cavity of the pumping head 400 through the pumping pipe 300, and is poured outwards from the through cavity through the pouring opening 500.
The height of the through cavity gradually increases along the direction from the outside to the inside of the pouring opening 500; the inner side wall of the through cavity is covered with an elastic layer 600, the elastic layer 600 is cone-shaped, the top of the elastic layer 600 is provided with a plurality of elastic rubberized walls 700, and the bottom of the elastic layer 600 is provided with a plurality of elastic lower rubberized walls 800;
along the direction from outside to inside of the pouring opening 500, a plurality of rubberized walls 700 are sequentially arranged at intervals, a plurality of rubberized walls 800 are sequentially arranged at intervals, the rubberized walls 700 and the rubberized walls 800 are oppositely arranged up and down, and the bottoms of the rubberized walls 700 are in up-down contact with the tops of the rubberized walls 800;
when concrete is poured, after the pumping pressure in the pumping pipe 300 is greater than a set value, the concrete impacts into the through cavity, the upper rubber wall 700 and the lower rubber wall 800 are separated from each other by impact, and the concrete is poured outwards through the pouring opening 500.
In this embodiment, the pouring opening 500 of the pumping head 400 is reduced from inside to outside, so that the air pressure in the pumping process can be increased, when the pumping head 400 is poured by concrete, the structure among the elastic layer 600, the rubber wall 700 and the lower rubber wall 800 is utilized to play a role in buffering the pumped concrete, so that the pumping head 400 is prevented from being intermittently poured by the concrete, and the concrete is prevented from being pothole when being poured, and the concrete is in a straight-down state when being poured from the through cavity to outside.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (5)
1. The method for pouring the mass concrete is characterized by comprising the following construction steps of:
1) Dividing a pouring area into a plurality of fan-shaped areas, wherein the fan-shaped areas are divided into a plurality of arc-shaped areas which are arranged adjacently in sequence from the inner end to the outer end of the fan-shaped areas;
2) Pouring concrete in the fan-shaped areas by using pumping pipes, wherein the pumping pipes sequentially and outwards pour concrete from the inner ends of the fan-shaped areas, and sequentially pour concrete layers with set heights in each arc-shaped area;
3) Repeating the construction step 2) until the concrete layer of each arc-shaped area of the fan-shaped area reaches a set height;
4) Repeating the construction steps 2) and 3) until the concrete layers of the arc-shaped areas of the fan-shaped areas reach the set height, wherein the concrete layers of the fan-shaped areas are arranged at equal heights;
in the process of pouring concrete, the concrete layer is provided with an inclined surface; when the intermittent time of stopping pouring concrete by the pumping pipe is longer than the intermittent time period, inserting a plurality of short steel bars arranged at intervals on the inclined surface in the intermittent time;
the lower parts of the short steel bars are embedded in the concrete layer, the upper parts of the short steel bars are exposed on the inclined plane, and the short steel bars are vertically arranged with the inclined plane;
the plurality of short steel bars form a reinforcing group, a plurality of reinforcing groups which are arranged at intervals are arranged on the inclined surface, and in the reinforcing group, the plurality of short steel bars are arranged in a plum blossom shape;
the pumping pipe is provided with a pumping head, a through cavity is arranged in the pumping head, the front end of the pumping head is provided with a pouring opening, the pouring opening is communicated with the through cavity, and the pouring opening is flat;
the concrete enters a through cavity of the pumping head through the pumping pipe, and is poured outwards through a pouring port from the through cavity;
the height of the through cavity is gradually increased along the direction from outside to inside of the pouring opening; the inner side wall of the through cavity is covered with an elastic layer, the elastic layer is cone-shaped, the top of the elastic layer is provided with a plurality of elastic rubberized walls, and the bottom of the elastic layer is provided with a plurality of elastic lower rubberized walls;
along the direction from outside to inside of the pouring opening, a plurality of rubberizing walls are sequentially arranged at intervals, a plurality of lower rubberizing walls are sequentially arranged at intervals, the rubberizing walls and the lower rubberizing walls are oppositely arranged up and down, and the bottoms of the rubberizing walls are in up-down contact with the tops of the lower rubberizing walls;
when concrete is poured, after the pumping pressure in the pumping pipe is greater than a set value, the concrete impacts and enters the through cavity to mutually separate the upper rubber wall from the lower rubber wall, and the concrete is poured outwards through the pouring opening.
2. A method of high volume concrete placement according to claim 1, wherein said pumping tube is placed for a period of time greater than a set period of time during the placement of concrete.
3. A method of high volume concrete placement according to any one of claims 1 to 2, wherein said pumping pipe is stopped for a period of time less than the period of time between placing concrete.
4. A method of high volume concrete placement according to claim 3, wherein said intermittent time period is 3.5 hours.
5. A method of high volume concrete placement according to claim 1, wherein said short bars have a length of between 1m and 1.5 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210930873.7A CN115217336B (en) | 2022-08-04 | 2022-08-04 | Large-volume concrete pouring method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210930873.7A CN115217336B (en) | 2022-08-04 | 2022-08-04 | Large-volume concrete pouring method |
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| CN115217336A CN115217336A (en) | 2022-10-21 |
| CN115217336B true CN115217336B (en) | 2023-08-18 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106284355A (en) * | 2016-08-03 | 2017-01-04 | 中国航天建设集团有限公司 | The mass concrete technological facilities construction method that steel plate built-in fitting binds |
| CN106968453A (en) * | 2017-04-24 | 2017-07-21 | 华南理工大学 | A kind of reinforced column welding ring muscle ruggedized construction and its construction method |
| CN107448022A (en) * | 2017-08-29 | 2017-12-08 | 中国三冶集团有限公司 | A kind of food stuff refrigerated storage large area overlength method for constructing terrace based on BIM |
| JP2020020192A (en) * | 2018-08-02 | 2020-02-06 | 大成建設株式会社 | Construction method of concrete structure |
| CN113668928A (en) * | 2021-06-18 | 2021-11-19 | 中国化学工程第十四建设有限公司 | Method for controlling construction cracks of ultra-large-volume concrete water pool |
| CN114277840A (en) * | 2021-12-22 | 2022-04-05 | 珠海华发人居生活研究院有限公司 | Construction method for reducing post-cast strip setting and controlling harmful cracks of concrete |
-
2022
- 2022-08-04 CN CN202210930873.7A patent/CN115217336B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106284355A (en) * | 2016-08-03 | 2017-01-04 | 中国航天建设集团有限公司 | The mass concrete technological facilities construction method that steel plate built-in fitting binds |
| CN106968453A (en) * | 2017-04-24 | 2017-07-21 | 华南理工大学 | A kind of reinforced column welding ring muscle ruggedized construction and its construction method |
| CN107448022A (en) * | 2017-08-29 | 2017-12-08 | 中国三冶集团有限公司 | A kind of food stuff refrigerated storage large area overlength method for constructing terrace based on BIM |
| JP2020020192A (en) * | 2018-08-02 | 2020-02-06 | 大成建設株式会社 | Construction method of concrete structure |
| CN113668928A (en) * | 2021-06-18 | 2021-11-19 | 中国化学工程第十四建设有限公司 | Method for controlling construction cracks of ultra-large-volume concrete water pool |
| CN114277840A (en) * | 2021-12-22 | 2022-04-05 | 珠海华发人居生活研究院有限公司 | Construction method for reducing post-cast strip setting and controlling harmful cracks of concrete |
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| CN115217336A (en) | 2022-10-21 |
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