CN115306153A - High-rise building concrete pouring structure and method - Google Patents
High-rise building concrete pouring structure and method Download PDFInfo
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- CN115306153A CN115306153A CN202110496259.XA CN202110496259A CN115306153A CN 115306153 A CN115306153 A CN 115306153A CN 202110496259 A CN202110496259 A CN 202110496259A CN 115306153 A CN115306153 A CN 115306153A
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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
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Abstract
The invention discloses a concrete pouring structure and a method for a high-rise building, which comprises a main frame, a concrete vertical conveying pump pipe, a connecting pipe, a concrete horizontal conveying pump pipe, a limiting support, a concrete pump and a pipeline pressure pump, wherein the main frame comprises a base, a vertical supporting rod, a horizontal supporting plate and a top beam; through setting up spacing support, and enclose through spacing support and locate the concrete vertical feed pump line, can effectively fix the concrete vertical feed pump line, prevent that the concrete vertical feed pump line from leading to rocking or the condition that drops appearing because of concrete gravity's reason, and simultaneously, through setting up the pipeline force (forcing) pump, and with concrete vertical feed pump line internal connection, when the gas pressure is not enough in the concrete vertical feed pump line, through the pressurization of pipeline force (forcing) pump, can effectively increase the inside gas pressure of concrete vertical feed pump line, thereby effectively prevent the condition of concrete refluence and appear.
Description
Technical Field
The invention relates to the technical field of concrete pouring, in particular to a high-rise building concrete pouring structure and a high-rise building concrete pouring method.
Background
Along with the reduction of land area, current building is toward eminence development, when covering high-rise building, is indispensable link to the concrete placement of floor, and current floor concrete placement generally sets up concrete vertical feed pump pipe and concrete horizontal feed pump pipe on the tower crane, then carries the concrete to setting up the pouring hose on the floor face through concrete pump with concrete process concrete vertical feed pump pipe and concrete horizontal feed pump pipe to realize high-rise floor concrete placement.
However, the existing floor concrete pouring method has the following defects: (1) In the process of conveying concrete, due to the gravity of the concrete, the concrete vertical conveying pump pipe is easy to shake on the tower crane and even fall off from the tower crane, so that the conveying of the concrete is influenced; (2) In the concrete conveying process, the concrete flows backwards due to insufficient pressure in the concrete vertical conveying pump pipe or the concrete horizontal conveying pump pipe, and the concrete pouring effect is affected.
Disclosure of Invention
In view of this, the invention provides a high-rise building concrete pouring structure and a method thereof, which can solve the defects that a concrete vertical conveying pump pipe is easy to fall off and the pressure in the conveying pump pipe is not large in the existing floor concrete pouring mode.
The technical scheme of the invention is realized as follows:
a high-rise building concrete pouring structure comprises a main frame, a concrete vertical conveying pump pipe, a connecting pipe, a concrete horizontal conveying pump pipe, a limiting support, a concrete pump and a pipeline pressure pump, wherein the main frame comprises a base, a vertical supporting rod, a horizontal supporting plate and a top beam, the vertical supporting rod is erected between the base and the top beam, the horizontal supporting plate is installed between the vertical supporting rod, the connecting pipe penetrates through the top beam and is arranged on the top beam, the concrete vertical conveying pump pipe penetrates through the horizontal supporting plate, one end of the concrete vertical conveying pump pipe is connected with the concrete pump, the other end of the concrete vertical conveying pump pipe is connected with one end of the connecting pipe, the other end of the connecting pipe is connected with one end of the concrete horizontal conveying pump pipe, the other end of the concrete horizontal conveying pump pipe is connected with a pouring hose, the limiting support is arranged around the concrete vertical conveying pump pipe and is arranged on the horizontal supporting plate, and the pipeline pressure pump is arranged at the bottom of the horizontal supporting plate and is connected with the interior of the concrete vertical conveying pump pipe.
As a further alternative of the high-rise building concrete pouring structure, the high-rise building concrete pouring structure further comprises pull wires, and the pull wires are used for connecting the vertical supporting rods and the base and preventing the vertical supporting rods from inclining.
As a further alternative of the high-rise concrete pouring structure, the high-rise concrete pouring structure further comprises a clamping piece, and the clamping piece is used for fixing the concrete horizontal conveying pump pipe and is installed on the top beam.
As a further alternative of the high-rise building concrete pouring structure, the bottom end surface of the base is in a rectangular array shape, and triangular prism-shaped bulges are welded on the bottom end surface of the base.
A high-rise building concrete pouring method is based on any one high-rise building concrete pouring structure and specifically comprises the following steps:
step S1, conveying concrete to a pouring hose through a concrete vertical conveying pump pipe, a connecting pipe and a concrete horizontal conveying pump pipe in sequence by a concrete pump in a concrete pouring structure of the high-rise building;
and S2, moving the pouring hose to a preset pouring point, and controlling the pouring thickness of the pouring point, so that the concrete pouring of the high-rise building is realized.
As a further alternative of the high-rise building concrete pouring method, when the concrete is conveyed to the concrete vertical conveying pump pipe, the connecting pipe and the concrete horizontal conveying pump pipe in step S1, the internal air pressure of the concrete conveyed to the concrete vertical conveying pump pipe is detected in real time, if the internal air pressure is less than the external air pressure, the pipeline pressure pump is started, otherwise, no processing is performed.
As a further alternative of the high-rise building concrete pouring method, in the pouring process in step S2, a vibrating operation is performed in each pouring point by a vibrating rod, and the vibrating operation is performed for 10 seconds/time to 15 seconds/time.
As a further alternative of the high-rise building concrete pouring method, the high-rise building concrete pouring method further includes the steps of:
and S3, after the pouring is finished, detecting the surface temperature of the concrete structure, and if the temperature is higher than 70 ℃, cooling the concrete structure to reduce the temperature stress.
The invention has the beneficial effects that: through setting up spacing support, and enclose through spacing support and locate the concrete vertical feed pump line, can effectively fix the concrete vertical feed pump line, prevent that the concrete vertical feed pump line from leading to rocking or the condition that drops appearing because of concrete gravity's reason, and simultaneously, through setting up the pipeline force (forcing) pump, and with concrete vertical feed pump line internal connection, when the gas pressure is not enough in the concrete vertical feed pump line, through the pressurization of pipeline force (forcing) pump, can effectively increase the inside gas pressure of concrete vertical feed pump line, thereby effectively prevent the condition of concrete refluence and appear.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of a concrete cast structure for high-rise buildings according to the present invention;
FIG. 2 is a schematic flow chart of a high-rise concrete casting method according to the present invention;
description of the reference numerals: 1. a main frame; 2. a concrete vertical delivery pump pipe; 3. a connecting pipe; 4. a concrete horizontal delivery pump pipe; 5. a limiting bracket; 6. a concrete pump; 7. a pipeline pressure pump; 8. pulling a wire; 9. a clamping and fixing piece; 10. a triangular prism-shaped protrusion; 101. a base; 102. a vertical support bar; 103. a horizontal support plate; 104. a top beam.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, 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. 1-2, a high-rise building concrete pouring structure includes a main frame 1, a vertical concrete conveying pump pipe 2, a connecting pipe 3, a horizontal concrete conveying pump pipe 4, a limiting support 5, a concrete pump 6 and a pipeline pressure pump 7, wherein the main frame 1 includes a base 101, a vertical support rod 102, a horizontal support plate 103 and a top beam 104, the vertical support rod 102 is erected between the base 101 and the top beam 104, the horizontal support plate 103 is installed between the vertical support rods 102, the connecting pipe 3 penetrates through the top beam 104 and is arranged on the top beam 104, the vertical concrete conveying pump pipe 2 penetrates through the horizontal support plate 103, one end of the vertical concrete conveying pump pipe 2 is connected with the concrete pump 6, the other end of the vertical concrete conveying pump pipe 2 is connected with one end of the connecting pipe 3, the other end of the connecting pipe 3 is connected with one end of the horizontal concrete conveying pump pipe 4, the other end of the horizontal concrete conveying pump pipe 4 is connected with a pouring hose, the limiting support 5 surrounds the vertical concrete conveying pump pipe 2 and is arranged on the horizontal support plate 103, the pipeline pressure pump 7 is arranged at the bottom of the horizontal support plate 103 and is connected with the inside of the vertical concrete conveying pump pipe 2.
In this embodiment, through setting up spacing support 5, and enclose through spacing support 5 and locate concrete vertical feed pump pipe 2, can effectively fix concrete vertical feed pump pipe 2, prevent that concrete vertical feed pump pipe 2 from leading to rocking or the condition that drops appearing because of concrete gravity's reason, and simultaneously, through setting up pipeline force (forcing) pump 7, and with 2 internal connection of concrete vertical feed pump pipe, when gas pressure is not enough in concrete vertical feed pump pipe 2, pressurize through pipeline force (forcing) pump 7, can effectively increase the gas pressure of 2 inside concrete vertical feed pump pipes, thereby the condition that effectively prevents the concrete refluence appears.
Preferably, the high-rise building concrete pouring structure further comprises a stay wire 8, wherein the stay wire 8 is used for connecting the vertical support rod 102 and the base 101 and preventing the vertical support rod 102 from inclining.
In this embodiment, by arranging the stay wires 8 and connecting the vertical support rods 102 and the base 101 through the stay wires 8, the inclination of the vertical support rods 102 can be effectively prevented, the verticality of the vertical support rods 102 is ensured, the balance of the top beam 104 is ensured, and the safety factor of the high-rise building concrete pouring structure is further improved.
Preferably, the high-rise building concrete pouring structure further comprises a clamping member 9, and the clamping member 9 is used for fixing the concrete horizontal conveying pump pipe 4 and is installed on the top beam 104.
In this embodiment, through setting up card firmware 9 to fix concrete horizontal feed pump line 4 through card firmware 9, can prevent at the in-process of carrying the concrete, because concrete horizontal feed pump line 4 removes and the condition that influences the effect of pouring appears, thereby improved high-rise building concrete placement structure's pouring stability.
Preferably, triangular prism-shaped protrusions 10 are welded to the bottom end surface of the base 101 in a rectangular array.
In this embodiment, the triangular prism-shaped protrusions 10 are welded to the bottom end surface of the base 101, so that a certain anti-slip effect can be achieved, and the occurrence of slip of the concrete pouring structure of the high-rise building caused by the pressure of the concrete pump 6, the pressure of the pipeline pressure pump 7 and the gravity of the concrete can be prevented when the concrete is conveyed.
A high-rise building concrete pouring method is based on any one high-rise building concrete pouring structure and specifically comprises the following steps:
step S1, conveying concrete to a pouring hose through a concrete vertical conveying pump pipe 2, a connecting pipe 3 and a concrete horizontal conveying pump pipe 4 in sequence by a concrete pump 6 in a concrete pouring structure of the high-rise building;
and S2, moving the pouring hose to a preset pouring point, and controlling the pouring thickness of the pouring point, so that the concrete pouring of the high-rise building is realized.
Preferably, when the concrete is conveyed to the concrete vertical conveying pump pipe 2, the connecting pipe 3 and the concrete horizontal conveying pump pipe 4 in the step S1, the internal air pressure of the concrete conveyed to the concrete vertical conveying pump pipe 2 is detected in real time, if the internal air pressure is smaller than the external air pressure, the pipeline pressure pump 7 is started, otherwise, no processing is performed.
In this embodiment, through setting up spacing support 5, and enclose through spacing support 5 and locate concrete vertical feed pump pipe 2, can effectively fix concrete vertical feed pump pipe 2, prevent that concrete vertical feed pump pipe 2 from leading to rocking or the condition that drops appearing because of concrete gravity's reason, and simultaneously, through setting up pipeline force (forcing) pump 7, and with 2 internal connection of concrete vertical feed pump pipe, when gas pressure is not enough in concrete vertical feed pump pipe 2, pressurize through pipeline force (forcing) pump 7, can effectively increase the gas pressure of 2 inside concrete vertical feed pump pipes, thereby effectively prevent the condition of concrete refluence from appearing.
Preferably, in the casting process in step S2, a vibrating operation is performed in each casting point by a vibrating rod, and the time of the vibrating operation is 10 seconds/time to 15 seconds/time.
In the embodiment, during the pouring process, the vibrating operation is performed in each pouring point through the vibrating rod, and the vibrating operation time is controlled to be 10 seconds/time to 15 seconds/time, so that the concrete can be effectively prevented from being mixed with air to generate a cavity during the pouring process, and the concrete pouring effect is improved.
Preferably, the high-rise building concrete pouring method further comprises the following steps:
and S3, after the pouring is finished, detecting the surface temperature of the concrete structure, and if the temperature is higher than 70 ℃, cooling the concrete structure to reduce the temperature stress.
In this embodiment, after the concrete pouring is completed, the surface temperature of the concrete structure is detected, and if the surface temperature exceeds 70 ℃, the temperature is lowered, so that cracks in the concrete can be effectively prevented, and the concrete pouring effect can be further improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, which is intended to cover any modifications, equivalents, improvements, etc. within the spirit and scope of the present invention.
Claims (8)
1. The high-rise building concrete pouring structure is characterized by comprising a main frame (1), a concrete vertical conveying pump pipe (2), a connecting pipe (3), a concrete horizontal conveying pump pipe (4), a limiting support (5), a concrete pump (6) and a pipeline pressure pump (7), wherein the main frame (1) comprises a base (101), a vertical supporting rod (102), a horizontal supporting plate (103) and a top beam (104), the vertical supporting rod (102) is erected between the base (101) and the top beam (104), the horizontal supporting plate (103) is installed between the vertical supporting rods (102), the connecting pipe (3) penetrates through the top beam (104) and is arranged on the top beam (104), the concrete vertical conveying pump pipe (2) penetrates through the horizontal supporting plate (103), one end of the concrete vertical conveying pump pipe (2) is connected with the concrete pump (6), the other end of the concrete vertical conveying pump pipe (2) is connected with one end of the connecting pipe (3), the other end of the connecting pipe (3) is connected with one end of the concrete horizontal conveying pump pipe (4), the other end of the concrete vertical conveying pump pipe (4) is connected with the concrete pump pipe (5), and a hose (103) is arranged on the horizontal conveying pump pipe (5), the pipeline pressure pump (7) is arranged at the bottom of the horizontal supporting plate (103) and is connected with the interior of the concrete vertical conveying pump pipe (2).
2. The high-rise concrete cast structure according to claim 1, further comprising a stay wire (8), wherein the stay wire (8) is used for connecting the vertical support bar (102) and the base (101) to prevent the vertical support bar (102) from being inclined.
3. The high-rise concrete casting structure according to claim 1 or 2, further comprising a fastener (9), wherein the fastener (9) is used for fixing the concrete horizontal transfer pump pipe (4) and is mounted on the top beam (104).
4. A high-rise building concrete cast structure according to claim 3, characterized in that the bottom end surface of the base (101) is in a rectangular array shape and welded with triangular prism-shaped bulges (10).
5. A high-rise building concrete pouring method is characterized by being based on any one high-rise building concrete pouring structure and specifically comprising the following steps of:
the method comprises the following steps that S1, concrete is conveyed to a pouring hose through a concrete vertical conveying pump pipe (2), a connecting pipe (3) and a concrete horizontal conveying pump pipe (4) in sequence through a concrete pump (6) in a concrete pouring structure of the high-rise building;
and S2, moving the pouring hose to a preset pouring point, and controlling the pouring thickness of the pouring point, so that the concrete pouring of the high-rise building is realized.
6. The method for pouring concrete into a high-rise building according to claim 5, wherein in the step S1, when the concrete is delivered into the concrete vertical delivery pump pipe (2), the connecting pipe (3) and the concrete horizontal delivery pump pipe (4), the internal air pressure of the concrete delivered into the concrete vertical delivery pump pipe (2) is detected in real time, if the internal air pressure is less than the external air pressure, the pipeline pressure pump (7) is started, otherwise, no processing is performed.
7. The method for pouring concrete for high-rise buildings according to claim 6, wherein in the pouring process in step S2, the vibrating operation is performed in each pouring point by a vibrating rod for a time ranging from 10 seconds/time to 15 seconds/time.
8. The high-rise building concrete pouring method according to claim 5 or 7, characterized by further comprising the steps of:
and S3, after the pouring is finished, detecting the surface temperature of the concrete structure, and if the temperature is higher than 70 ℃, cooling the concrete structure to reduce the temperature stress.
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| CN202110496259.XA CN115306153A (en) | 2021-05-07 | 2021-05-07 | High-rise building concrete pouring structure and method |
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| CN202110496259.XA CN115306153A (en) | 2021-05-07 | 2021-05-07 | High-rise building concrete pouring structure and method |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110009468A (en) * | 2009-07-22 | 2011-01-28 | 현대건설주식회사 | Apparatus for operating concrete supply facility safely and method for operating concrete supply facility safely |
| CN103628685A (en) * | 2013-12-12 | 2014-03-12 | 深圳市鹏城建筑集团有限公司 | Method for preventing concrete lateral displacement of concrete pump pipe and concrete pump pipe strengthening device |
| JP2015101822A (en) * | 2013-11-21 | 2015-06-04 | 大成建設株式会社 | Concrete placing method |
| CN204850474U (en) * | 2015-07-22 | 2015-12-09 | 中铁建工集团有限公司 | Concrete feeding pump line fixing system |
| CN109138431A (en) * | 2018-10-11 | 2019-01-04 | 上海建工建集团有限公司 | A kind of Super High pump line Overbridge device and its construction method |
| CN111042535A (en) * | 2019-12-31 | 2020-04-21 | 吕光华 | Concrete grouting conveying device for high-rise building construction |
| CN211548813U (en) * | 2019-10-12 | 2020-09-22 | 中国建筑第二工程局有限公司 | Conveying and pouring device based on high-rise building concrete construction |
| CN112031426A (en) * | 2020-09-09 | 2020-12-04 | 上海宝冶集团有限公司 | High-strength concrete pouring system for super high-rise building |
| CN212642151U (en) * | 2020-06-12 | 2021-03-02 | 栾海明 | High-rise material conveying device for building construction |
| CN212986262U (en) * | 2020-05-26 | 2021-04-16 | 云南建投第十六建设有限公司 | Improved floor pump pipe bearing and reinforcing device |
-
2021
- 2021-05-07 CN CN202110496259.XA patent/CN115306153A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110009468A (en) * | 2009-07-22 | 2011-01-28 | 현대건설주식회사 | Apparatus for operating concrete supply facility safely and method for operating concrete supply facility safely |
| JP2015101822A (en) * | 2013-11-21 | 2015-06-04 | 大成建設株式会社 | Concrete placing method |
| CN103628685A (en) * | 2013-12-12 | 2014-03-12 | 深圳市鹏城建筑集团有限公司 | Method for preventing concrete lateral displacement of concrete pump pipe and concrete pump pipe strengthening device |
| CN204850474U (en) * | 2015-07-22 | 2015-12-09 | 中铁建工集团有限公司 | Concrete feeding pump line fixing system |
| CN109138431A (en) * | 2018-10-11 | 2019-01-04 | 上海建工建集团有限公司 | A kind of Super High pump line Overbridge device and its construction method |
| CN211548813U (en) * | 2019-10-12 | 2020-09-22 | 中国建筑第二工程局有限公司 | Conveying and pouring device based on high-rise building concrete construction |
| CN111042535A (en) * | 2019-12-31 | 2020-04-21 | 吕光华 | Concrete grouting conveying device for high-rise building construction |
| CN212986262U (en) * | 2020-05-26 | 2021-04-16 | 云南建投第十六建设有限公司 | Improved floor pump pipe bearing and reinforcing device |
| CN212642151U (en) * | 2020-06-12 | 2021-03-02 | 栾海明 | High-rise material conveying device for building construction |
| CN112031426A (en) * | 2020-09-09 | 2020-12-04 | 上海宝冶集团有限公司 | High-strength concrete pouring system for super high-rise building |
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