CN112323788B - Anti-seismic cement mixing pile and construction method - Google Patents
Anti-seismic cement mixing pile and construction method Download PDFInfo
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- CN112323788B CN112323788B CN202011501451.5A CN202011501451A CN112323788B CN 112323788 B CN112323788 B CN 112323788B CN 202011501451 A CN202011501451 A CN 202011501451A CN 112323788 B CN112323788 B CN 112323788B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/46—Concrete or concrete-like piles cast in position ; Apparatus for making same making in situ by forcing bonding agents into gravel fillings or the soil
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/08—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against transmission of vibrations or movements in the foundation soil
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/10—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0018—Cement used as binder
Abstract
The invention discloses an anti-seismic cement mixing pile and a construction method. The bottom of first baffle is equipped with down the fixed column, first cement post, second cement post on the first baffle, and first cement post, second cement post all run through first baffle, install second baffle, third baffle on first cement post, the second cement post, and the third baffle is located the top of first cement post, second cement post, and first cement post, second cement post all are located the underground, and first cement post, second cement post all adopt soil cement stirring stake to make, are equipped with integrated into one piece's down tube on first cement post, the second cement post. The construction method has the advantages of reasonable reinforcement, reliable technology, vibration in the construction process, low noise and no pollution to the environment. The reinforcement effect is good, the anti-seismic performance is improved, and the cost is low.
Description
Technical Field
The invention relates to an anti-seismic cement mixing pile and a construction method, and belongs to the technical field of building construction.
Background
The cement mixing pile is one of the soft soil roadbed processing methods which are widely applied in recent years, is a new soft soil reinforcing technology, and is preferably used for foundation processing when the burial depth of the soft soil is not more than 8 m. According to the chemical mechanism of cement hydration, the soft soil and cement are mixed forcibly in situ in the deep part of the stratum by a special deep mixing machine, so that the soft soil is hardened to improve the strength of the foundation and improve the anti-seismic stability.
Disclosure of Invention
The invention aims to provide an anti-seismic cement mixing pile and a construction method, which aim to solve the problems in the background technology.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides an antidetonation type cement mixing pile, includes first baffle, second baffle, third baffle, first cement post, second cement post, lower fixed column, the bottom of first baffle is equipped with lower fixed column, first cement post, second cement post on the first baffle, and first cement post, second cement post all run through first baffle, install second baffle, third baffle on first cement post, the second cement post, and the third baffle is located the top of first cement post, second cement post, and first cement post, second cement post all are located the underground, and first cement post, second cement post all adopt soil cement mixing pile-forming to make, are equipped with integrated into one piece's down tube on first cement post, the second cement post.
Preferably, the first baffle, second baffle, third baffle are the same in structure, have seted up two on the first baffle and have led to the groove, and first cement post, second cement post are all connected with first baffle through leading to the groove, lead to the inslot wall both sides and are equipped with the integrated into one piece fixed block, and the spout has been seted up to the both sides that lead to the groove, and the fixed plate is connected with first baffle, installs first cement post, second cement post on the fixed plate, set up the round hole that supplies first cement post, second cement post to pass through on the fixed plate, the bottom both sides of fixed plate are equipped with integrated into one piece's slider, and the slider is connected with the spout, set up jaggedly on the fixed block that leads to the inslot, be equipped with the fashioned bulge in one side on first cement post, the second cement post, bulge and breach phase-match.
The construction method of the anti-seismic cement mixing pile comprises the following steps:
(1) construction preparation: leveling a field, constructing and paying off, and removing all barriers influencing construction in an operation area; installing and debugging construction machinery to ensure the normal operation of the rotating speed, air pressure and metering facilities of the pile driver;
(2) pile machine positioning: setting the driving position of the cement mixing pile, marking, positioning a pile driver, using a theodolite or a plumb bob to hang and cross to measure the perpendicularity of the pile frame by a measurer, and using a steel wire rope pulled by a hinge to adjust the angle of the pile frame by a pile driver operator to ensure that the perpendicularity of the pile frame meets the standard requirement;
(3) stirring and sinking: aligning a stirring head to a designed pile position, starting the stirring machine after cooling water circulation of a deep layer stirring machine is normal, loosening a steel wire rope of the crane, enabling two groups of blades to rotate forward and backward simultaneously, and enabling the stirring machine to rotate downwards along a guide frame while cutting soil and sink until a reinforcing depth is reached after the rotating speed of the stirring head is normal;
(4) stirring, guniting and lifting: after the cement deep-layer stirrer sinks to the designed depth, starting a mortar pump to press cement paste into a foundation, rotating while spraying the cement paste, rotating while lifting a stirring drill bit, and lifting the stirrer and spraying the rest cement paste strictly according to the lifting speed determined by the design during lifting;
(5) secondary slurry spraying and sinking: two sets of blades rotate forward and backward simultaneously, soil is cut downwards along the guide frame, and a slurry feeding pump is started simultaneously to rotate while cutting the soil and sink.
(6) Stopping drilling and spraying cement for more than 1 minute: stopping drilling after sinking to the bottom of the pile to achieve the reinforcement depth, continuously spraying and stirring for more than 1 minute at the bottom of the pile, and controlling the sinking speed by a current monitoring meter to ensure that the working current is not more than 70A;
(7) stirring and lifting to form a pile: closing the mortar pump, rotating the two groups of blades forward and backward simultaneously, stirring cement soil and lifting to the ground surface to complete single-pile construction;
(8) and (4) shifting, repeating the steps (2) to (7), and after the design requirement is met, closing the stirring machine, and shifting to enter the construction of the next pile.
Compared with the prior art, the invention has the beneficial effects that: the invention has reasonable design; the inclined rod improves the anti-buoyancy of the first cement column and the second cement column; the design of the first partition plate, the second partition plate and the third partition plate improves the overall stability of the first cement column and the second cement column, and the lower fixing column below the first partition plate can buffer vertical seismic waves during an earthquake; first cement post, second cement post pass through the fixed plate and install at logical inslot, and when the earthquake wave was the transverse wave, the fixed plate can control the small region removal under the effect of slider, spout, thereby the bulge piece on first cement post, the second cement post is avoided the moving range great with the breach phase-match. The construction method has the advantages of reasonable reinforcement, reliable technology, vibration in the construction process, low noise and no pollution to the environment.
Because the cement mixing pile is used for reinforcing the foundation, the soft soil is not extruded laterally, the influence on adjacent buildings is small, the reinforcing effect is good, and the cost is low. Compared with normal foundation treatment, the automatic construction does not need to invest a large amount of replacement and filling machines and does not need waste gas replacement and filling treatment, and waste accumulation links are reduced.
Drawings
FIG. 1 is a schematic view of an anti-seismic cement mixing pile according to the present invention.
Fig. 2 is a schematic view of a first partition plate of the anti-seismic cement mixing pile according to the invention.
Fig. 3 is a schematic view of a fixing plate of the anti-seismic cement mixing pile of the present invention.
Fig. 4 is a schematic view of a through groove of the anti-seismic cement mixing pile of the invention.
Fig. 5 is a partial schematic view of a first cement column of the seismic-resistant cement mixing pile according to the present invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely explained below with reference to the drawings in the embodiments of the present invention.
An anti-seismic cement mixing pile comprises a first partition plate (1), a second partition plate (2), a third partition plate (3), a first cement column (4), a second cement column (6) and a lower fixing column (7), wherein the lower fixing column (7) is arranged at the bottom of the first partition plate (1), the first cement column (4) and the second cement column (6) are arranged on the first partition plate (1), the first cement column (4) and the second cement column (6) penetrate through the first partition plate (1), the second partition plate (2) and the third partition plate (3) are arranged on the first cement column (4) and the second cement column (6), the third partition plate (3) is arranged above the first cement column (4) and the second cement column (6), the first cement column (4) and the second cement column (6) are arranged underground, and the first cement column (4) and the second cement column (6) are formed by mixing cement soil, the first cement column (4) and the second cement column (6) are provided with integrally formed inclined rods (5).
Preferably, the first partition board (1), the second partition board (2) and the third partition board (3) have the same structure, the first partition board (1) is provided with two through grooves (8), the first cement column (4) and the second cement column (6) are connected with the first partition board (1) through the through grooves (8), the two sides of the inner wall of each through groove (8) are provided with integrally-formed fixing blocks (9), the two sides of each through groove (8) are provided with sliding grooves (10), the fixing plate (11) is connected with the first partition board (1), the fixing plate (11) is provided with the first cement column (4) and the second cement column (6), the fixing plate (11) is provided with round holes (12) for the first cement column (4) and the second cement column (6) to pass through, the two sides of the bottom of the fixing plate (11) are provided with integrally-formed sliders (13), the sliders (13) are connected with the sliding grooves (10), the fixing blocks (9) in the through grooves (8) are provided with notches (14), the first cement column (4) and the second cement column (6) are provided with protruding blocks (15) with one sides formed, and the protruding blocks (15) are matched with the notches (14).
The construction method of the anti-seismic cement mixing pile specifically comprises the following steps of constructing a first cement column, a second cement column and a lower fixing column:
(1) construction preparation: leveling a field, constructing and paying off, and removing all barriers influencing construction in an operation area; installing and debugging construction machinery to ensure the normal operation of the rotating speed, air pressure and metering facilities of the pile driver;
(2) pile machine positioning: setting the driving position of the cement mixing pile, marking, positioning a pile driver, using a theodolite or a plumb bob to hang and cross to measure the perpendicularity of the pile frame by a measurer, and using a steel wire rope pulled by a hinge to adjust the angle of the pile frame by a pile driver operator to ensure that the perpendicularity of the pile frame meets the standard requirement;
(3) stirring and sinking: aligning a stirring head to a designed pile position, starting the stirring machine after cooling water circulation of a deep layer stirring machine is normal, loosening a steel wire rope of the crane, enabling two groups of blades to rotate forward and backward simultaneously, and enabling the stirring machine to rotate downwards along a guide frame while cutting soil and sink until a reinforcing depth is reached after the rotating speed of the stirring head is normal;
(4) stirring, guniting and lifting: after the cement deep-layer stirrer sinks to the designed depth, starting a mortar pump to press cement paste into a foundation, rotating while spraying the cement paste, rotating while lifting a stirring drill bit, and lifting the stirrer and spraying the rest cement paste strictly according to the lifting speed determined by the design during lifting;
(5) secondary slurry spraying and sinking: two sets of blades rotate forward and backward simultaneously, soil is cut downwards along the guide frame, and a slurry feeding pump is started simultaneously to rotate while cutting the soil and sink.
(6) Stopping drilling and spraying cement for more than 1 minute: stopping drilling after sinking to the bottom of the pile to achieve the reinforcement depth, continuously spraying and stirring for more than 1 minute at the bottom of the pile, and controlling the sinking speed by a current monitoring meter to ensure that the working current is not more than 70A;
(7) stirring and lifting to form a pile: closing the mortar pump, rotating the two groups of blades forward and backward simultaneously, stirring cement soil and lifting to the ground surface to complete single-pile construction;
(8) and (4) shifting, repeating the steps (2) to (7), and after the design requirement is met, closing the stirring machine, and shifting to enter the construction of the next pile.
The cement soil mixing pile is suitable for treating normally consolidated silt and foundations such as mucky soil, silt soil, saturated loess, plain filling soil, cohesive soil, saturated loose sandy soil without underground water and the like. The cement mixing pile construction principle is that cement series is used for manufacturing cement paste, the cement paste and a soil body are uniformly mixed through mechanical deep mixing, cement particles are dispersed in soil particles, a series of chemical and physical processes such as cement decomposition, hydration ion exchange and the like are generated, hydrate is cemented and exchanged with the soil particles, granulation and hard setting are performed, cement reinforced soil with certain strength and stability is formed, the bearing capacity of a foundation is improved, the physical and mechanical properties of the foundation soil are changed, and the purpose of reinforcing the foundation is achieved.
The foregoing is a preferred embodiment of the present invention, and it will be apparent to those skilled in the art that variations, modifications, substitutions and alterations can be made in the embodiment without departing from the principles and spirit of the invention.
Claims (2)
1. An anti-seismic cement mixing pile comprises a first partition plate (1), a second partition plate (2), a third partition plate (3), a first cement column (4), a second cement column (6) and a lower fixing column (7), and is characterized in that the lower fixing column (7) is arranged at the bottom of the first partition plate (1), the first cement column (4) and the second cement column (6) are respectively installed at two ends of the first partition plate (1), the first cement column (4) and the second cement column (6) penetrate through the first partition plate (1), the second partition plate (2) and the third partition plate (3) are installed on the first cement column (4) and the second cement column (6), the second partition plate (2) is located in the middle of the first cement column (4) and the second cement column (6), the first cement column (4) is located at the lower part of the second partition plate (2), and the second cement column (6) is located at the upper part of the second partition plate (2), the third partition plate (3) is positioned above the first cement column (4) and the second cement column (6), the first partition plate (1), the second partition plate (2) and the third partition plate (3) are parallel to each other, the first cement column (4) and the second cement column (6) are both positioned underground, the first cement column (4) and the second cement column (6) are both formed by cement-soil stirring piles, and the first cement column (4) and the second cement column (6) are provided with integrally formed inclined rods (5);
the structure of the first partition board (1), the second partition board (2) and the third partition board (3) is the same, two through grooves (8) are formed in the first partition board (1), the first cement column (4) and the second cement column (6) are connected with the first partition board (1) through the through grooves (8), integrally-formed fixed blocks (9) are arranged on two sides of the inner wall of each through groove (8), sliding grooves (10) are formed in two sides of each through groove (8), a fixed plate (11) is connected with the first partition board (1), the fixed plate (11) is installed on the first cement column (4) and the second cement column (6), round holes (12) for the first cement column (4) and the second cement column (6) to pass through are formed in the fixed plate (11), integrally-formed sliders (13) are arranged on two sides of the bottom of the fixed plate (11), the sliders (13) are connected with the sliding grooves (10), notches (14) are formed in the fixed blocks (9) in the through grooves (8), the first cement column (4) and the second cement column (6) are provided with protruding blocks (15) with one sides formed, and the protruding blocks (15) are matched with the notches (14).
2. A construction method of an anti-seismic cement mixing pile according to claim 1, characterized by comprising the steps of:
(1) construction preparation: leveling a field, constructing and paying off, and removing all barriers influencing construction in an operation area; installing and debugging construction machinery to ensure the normal operation of the rotating speed, air pressure and metering facilities of the pile driver;
(2) pile machine positioning: setting the driving position of the cement mixing pile, marking, positioning a pile driver, using a theodolite or a plumb bob to hang and cross to measure the perpendicularity of the pile frame by a measurer, and using a steel wire rope pulled by a hinge to adjust the angle of the pile frame by a pile driver operator to ensure that the perpendicularity of the pile frame meets the standard requirement;
(3) stirring and sinking: aligning a stirring head to a designed pile position, starting the stirring machine after cooling water circulation of a deep layer stirring machine is normal, loosening a steel wire rope of the crane, enabling two groups of blades to rotate forward and backward simultaneously, and enabling the stirring machine to rotate downwards along a guide frame while cutting soil and sink until a reinforcing depth is reached after the rotating speed of the stirring head is normal;
(4) stirring, guniting and lifting: after the cement deep-layer stirrer sinks to the designed depth, starting a mortar pump to press cement paste into a foundation, rotating while spraying the cement paste, rotating while lifting a stirring drill bit, and lifting the stirrer and spraying the rest cement paste strictly according to the lifting speed determined by the design during lifting;
(5) secondary slurry spraying and sinking: the two groups of blades rotate forward and backward simultaneously, cut soil downwards along the guide frame, and simultaneously start a slurry pump to rotate and cut soil while sinking;
(6) stopping drilling and spraying cement for more than 1 minute: stopping drilling after sinking to the bottom of the pile to achieve the reinforcement depth, continuously spraying and stirring for more than 1 minute at the bottom of the pile, and controlling the sinking speed by a current monitoring meter to ensure that the working current is not more than 70A;
(7) stirring and lifting to form a pile: closing the mortar pump, rotating the two groups of blades forward and backward simultaneously, stirring cement soil and lifting to the ground surface to complete single-pile construction;
(8) and (4) shifting, repeating the steps (2) to (7), and after the design requirement is met, closing the stirring machine, and shifting to enter the construction of the next pile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011501451.5A CN112323788B (en) | 2020-12-18 | 2020-12-18 | Anti-seismic cement mixing pile and construction method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011501451.5A CN112323788B (en) | 2020-12-18 | 2020-12-18 | Anti-seismic cement mixing pile and construction method |
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| CN112323788A CN112323788A (en) | 2021-02-05 |
| CN112323788B true CN112323788B (en) | 2022-04-19 |
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| CN209260745U (en) * | 2018-06-27 | 2019-08-16 | 江苏二八建设有限公司 | A kind of premixing high strength cement soil foundation |
| CN209816840U (en) * | 2019-03-04 | 2019-12-20 | 宿迁学院 | Stirring pile for geotechnical engineering |
| CN210216441U (en) * | 2019-02-01 | 2020-03-31 | 百盛联合集团有限公司 | Deep foundation pit supporting structure for cast-in-situ bored pile |
| CN210658472U (en) * | 2019-08-20 | 2020-06-02 | 青岛建设集团有限公司 | Anti-seismic building pile foundation structure |
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2020
- 2020-12-18 CN CN202011501451.5A patent/CN112323788B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204199334U (en) * | 2014-09-19 | 2015-03-11 | 江西省辉煌建设集团有限公司 | A kind of shock insulating foundation |
| CN205617407U (en) * | 2016-05-09 | 2016-10-05 | 杭州绿城都会建筑设计有限公司 | Strenghthened type pile foundation |
| CN209260745U (en) * | 2018-06-27 | 2019-08-16 | 江苏二八建设有限公司 | A kind of premixing high strength cement soil foundation |
| CN108914929A (en) * | 2018-07-06 | 2018-11-30 | 山西科汇创佳科技有限公司 | A kind of cement mixing pile construction method |
| CN109610447A (en) * | 2018-12-24 | 2019-04-12 | 中冶天工集团有限公司 | A kind of coupling beam structure of double row type steel cement mixing method stake top |
| CN210216441U (en) * | 2019-02-01 | 2020-03-31 | 百盛联合集团有限公司 | Deep foundation pit supporting structure for cast-in-situ bored pile |
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