CN110670580A - Construction method of fiber high-toughness cement soil composite pile - Google Patents
Construction method of fiber high-toughness cement soil composite pile Download PDFInfo
- Publication number
- CN110670580A CN110670580A CN201910981313.2A CN201910981313A CN110670580A CN 110670580 A CN110670580 A CN 110670580A CN 201910981313 A CN201910981313 A CN 201910981313A CN 110670580 A CN110670580 A CN 110670580A
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- Prior art keywords
- cement
- pile
- soil
- fiber
- sand
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Classifications
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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
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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
- E02D3/02—Improving by compacting
- E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
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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
Abstract
The invention discloses a construction method of a fiber high-toughness cement soil composite pile, which comprises the following steps of (1) driving a sand-gravel pile, a drainage plate or a drainage belt into soil, wherein a fiber material packaged by a water-soluble packaging bag is mixed in the sand-gravel pile or the drainage plate; (2) after the drainage is finished, stirring construction of a cement soil pile or a cement sand soil pile is carried out at the same position, the water-soluble packaging bag is softened when meeting underground water or cement paste, and the fiber material is stirred into cement soil or cement sand soil; (3) when cement is not hardened, a prefabricated core pile is driven into the same position, the section of the core pile is smaller than that of the cement-soil pile or the cement-sand-soil pile, the driven core pile is compacted and expands peripheral fiber cement soil or cement-sand soil, and the core pile and the peripheral pile jointly form the fiber high-toughness cement-soil composite pile. The invention has the advantages of convenient construction, high toughness, high strength, good bending resistance, breaking resistance and cracking resistance of the peripheral pile of the composite pile and high horizontal resistance of the pile body.
Description
Technical Field
The invention relates to a construction method of a fiber high-toughness cement soil composite pile.
Background
The existing cement-soil composite pile construction is generally carried out by adopting common cement and a stirring method, the constructed cement-soil pile has low tensile strength, small ultimate elongation and brittle property, and the defects are not obvious when the cement-soil composite pile is used as a compression-resistant pile, but the material performance is insufficient when the cement-soil composite pile is used as an uplift pile or a support pile, and further improvement is needed.
Disclosure of Invention
The invention aims to provide a construction method of a fiber high-toughness cement soil composite pile with convenient construction and good bending resistance, fracture resistance and crack resistance.
The technical solution of the invention is as follows:
a construction method of a fiber high-toughness cement soil composite pile is characterized by comprising the following steps: comprises the following steps:
(1) firstly, driving a sand-stone pile, a drainage plate or a drainage belt into soil, and mixing a fiber material packaged by a water-soluble packaging bag into the sand-stone pile or the drainage plate;
(2) the gravel pile, the drainage plate or the drainage belt is used as a drainage channel to drain most of underground water, stirring construction of a cement-soil pile or a cement-sand-soil pile is carried out at the same position after drainage is finished, the water-soluble packaging bag is softened when meeting the underground water or cement paste, and the fiber material is stirred into the cement soil or the cement-sand soil;
(3) when cement is not hardened, a prefabricated core pile is driven into the same position, the section of the core pile is smaller than that of the cement-soil pile or the cement-sand-soil pile, the driven core pile is compacted and expands peripheral fiber cement soil or cement-sand soil, and the core pile and the peripheral pile jointly form the fiber high-toughness cement-soil composite pile.
The sand-stone pile is firstly driven into the soil by a vibrating pipe sinking method or a long spiral soil taking and recharging method, and the drain plate or the drain belt is driven into the soil by a hammering method.
The stirring construction of the cement soil pile or the cement sand soil pile refers to that a cement stirring pile machine is adopted to spray cement powder or cement paste while stirring, and one or more times of drilling and lifting are carried out; when the ground water content is high, the cement powder is sprayed, and when the ground water content is low, the cement slurry is sprayed.
The water-soluble packaging bag is manufactured by adopting a water-soluble high polymer material as a film forming substrate, adding a plasticizer, a softening agent, a surfactant and a dispersant auxiliary material and adopting a film forming process.
The fiber material is one or more of metal fiber, natural mineral fiber, artificial mineral fiber, synthetic fiber and plant fiber.
And (3) spraying air at high pressure to discharge the underground water out of the ground while spraying the cement powder and stirring in the step (2).
The invention has the advantages of convenient construction, high toughness, high strength, good bending resistance, breaking resistance and cracking resistance of the peripheral pile of the composite pile and high horizontal resistance of the pile body.
The present invention will be further described with reference to the following examples.
Detailed Description
A construction method of a fiber high-toughness cement soil composite pile comprises the following steps:
(1) the water-soluble polymer material is used as a film forming substrate, a plasticizer, a softening agent, a surfactant and a dispersing agent auxiliary material are added, a water-soluble packaging bag is manufactured through a film forming process, basalt fiber is filled in the packaging bag, and the basalt fiber is continuous fiber drawn from natural basalt and belongs to natural mineral fiber. Firstly, driving sand, stones and the packaging bags into soil by using a vibrating pipe-sinking pile driver;
(2) discharging most of underground water through a gravel pile drainage channel, spraying cement powder while stirring at the same position by using a cement stirring pile machine after the drainage is finished, drilling down and lifting twice, simultaneously spraying air at high pressure to discharge the underground water out of the ground, softening a water-soluble packaging bag when meeting the underground water, and stirring basalt fibers into cement sandy soil;
(3) when the cement is not hardened, the prefabricated core pile is driven into the same position, the section of the core pile is smaller than that of the cement sand soil pile, the driven core pile is compacted and expands the peripheral fiber cement sand soil, and the core pile and the peripheral pile jointly form the fiber high-toughness cement soil composite pile.
Claims (6)
1. A construction method of a fiber high-toughness cement soil composite pile is characterized by comprising the following steps: comprises the following steps:
(1) firstly, driving a sand-stone pile, a drainage plate or a drainage belt into soil, and mixing a fiber material packaged by a water-soluble packaging bag into the sand-stone pile or the drainage plate;
(2) the gravel pile, the drainage plate or the drainage belt is used as a drainage channel to drain most of underground water, stirring construction of a cement-soil pile or a cement-sand-soil pile is carried out at the same position after drainage is finished, the water-soluble packaging bag is softened when meeting the underground water or cement paste, and the fiber material is stirred into the cement soil or the cement-sand soil;
(3) when cement is not hardened, a prefabricated core pile is driven into the same position, the section of the core pile is smaller than that of the cement-soil pile or the cement-sand-soil pile, the driven core pile is compacted and expands peripheral fiber cement soil or cement-sand soil, and the core pile and the peripheral pile jointly form the fiber high-toughness cement-soil composite pile.
2. The construction method of the fiber high-toughness cement-soil composite pile according to claim 1, characterized in that: the sand-stone pile is firstly driven into the soil by a vibrating pipe sinking method or a long spiral soil taking and recharging method, and the drain plate or the drain belt is driven into the soil by a hammering method.
3. The construction method of the fiber high-toughness cement-soil composite pile according to claim 1, characterized in that: the stirring construction of the cement soil pile or the cement sand soil pile refers to that a cement stirring pile machine is adopted to spray cement powder or cement paste while stirring, and one or more times of drilling and lifting are carried out; when the ground water content is high, the cement powder is sprayed, and when the ground water content is low, the cement slurry is sprayed.
4. The construction method of the fiber high-toughness cement-soil composite pile according to claim 1, characterized in that: the water-soluble packaging bag is manufactured by adopting a water-soluble high polymer material as a film forming substrate, adding a plasticizer, a softening agent, a surfactant and a dispersant auxiliary material and adopting a film forming process.
5. The construction method of the fiber high-toughness cement-soil composite pile according to claim 1, characterized in that: the fiber material is one or more of metal fiber, natural mineral fiber, artificial mineral fiber, synthetic fiber and plant fiber.
6. The method for constructing a fiber high-toughness cement-soil composite pile according to claim 1 or 3, wherein: and (3) spraying air at high pressure to discharge the underground water out of the ground while spraying the cement powder and stirring in the step (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910981313.2A CN110670580B (en) | 2019-10-16 | 2019-10-16 | Construction method of fiber high-toughness cement soil composite pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910981313.2A CN110670580B (en) | 2019-10-16 | 2019-10-16 | Construction method of fiber high-toughness cement soil composite pile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110670580A true CN110670580A (en) | 2020-01-10 |
| CN110670580B CN110670580B (en) | 2021-02-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201910981313.2A Active CN110670580B (en) | 2019-10-16 | 2019-10-16 | Construction method of fiber high-toughness cement soil composite pile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112627162A (en) * | 2020-12-22 | 2021-04-09 | 中建安装集团有限公司 | Drainage stiffening core composite pile based on geopolymer grouting and construction method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06257135A (en) * | 1993-03-08 | 1994-09-13 | Kurimoto Kensetsu Kogyo Kk | Columnar ground improving body and building method thereof and sheathing wall |
| JP2009275379A (en) * | 2008-05-13 | 2009-11-26 | Takenaka Komuten Co Ltd | Fiber-reinforced cement-based soil improvement method |
| CN102650128A (en) * | 2012-04-26 | 2012-08-29 | 浙江大学城市学院 | Cement mixing pile with stiffness core capable of draining and pre-pressing firstly and then grouting as well as construction method thereof |
| JP2012251368A (en) * | 2011-06-03 | 2012-12-20 | Hazama Corp | Method for creating soil improvement body |
| CN106337413A (en) * | 2016-09-07 | 2017-01-18 | 东南大学 | Water-draining stiff geo-textile bag cement-soil composite pile and construction method thereof |
| CN107246000A (en) * | 2017-06-30 | 2017-10-13 | 山东科技大学 | A kind of method that high polymer reinforces reclaimed ground |
-
2019
- 2019-10-16 CN CN201910981313.2A patent/CN110670580B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06257135A (en) * | 1993-03-08 | 1994-09-13 | Kurimoto Kensetsu Kogyo Kk | Columnar ground improving body and building method thereof and sheathing wall |
| JP2009275379A (en) * | 2008-05-13 | 2009-11-26 | Takenaka Komuten Co Ltd | Fiber-reinforced cement-based soil improvement method |
| JP2012251368A (en) * | 2011-06-03 | 2012-12-20 | Hazama Corp | Method for creating soil improvement body |
| CN102650128A (en) * | 2012-04-26 | 2012-08-29 | 浙江大学城市学院 | Cement mixing pile with stiffness core capable of draining and pre-pressing firstly and then grouting as well as construction method thereof |
| CN106337413A (en) * | 2016-09-07 | 2017-01-18 | 东南大学 | Water-draining stiff geo-textile bag cement-soil composite pile and construction method thereof |
| CN107246000A (en) * | 2017-06-30 | 2017-10-13 | 山东科技大学 | A kind of method that high polymer reinforces reclaimed ground |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112627162A (en) * | 2020-12-22 | 2021-04-09 | 中建安装集团有限公司 | Drainage stiffening core composite pile based on geopolymer grouting and construction method thereof |
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| CN110670580B (en) | 2021-02-12 |
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