CN112323784A - Pile construction method - Google Patents
Pile construction method Download PDFInfo
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- CN112323784A CN112323784A CN202011317325.4A CN202011317325A CN112323784A CN 112323784 A CN112323784 A CN 112323784A CN 202011317325 A CN202011317325 A CN 202011317325A CN 112323784 A CN112323784 A CN 112323784A
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- pipe
- pile
- outer pipe
- feeding
- filling material
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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
- E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
- E02D5/44—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds with enlarged footing or enlargements at the bottom of the pile
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a construction method of a pile, which comprises the steps of positioning, pipe sinking, bottom expanding and the like; in the bottom expanding construction, the feeding process is an outer pipe outer feeding process: an inclined feeding hopper is annularly arranged at the upper part of the outer immersed tube, a plurality of feeding ports are annularly arranged at the bottom of the feeding hopper along the horizontal direction of the outer tube, a feeding channel is vertically and uniformly distributed along the outer tube under each feeding port, and the joint of the lower port of each feeding channel and the outer tube is bent into the outer tube to be used as a discharge port; or the lower port of the feeding channel is directly provided with a flap type discharge port. The invention has convenient construction and good construction quality; the method can be applied to the traditional rammed pile, full rammed pile, carrier pile, internal rammed pile, stiffness composite pile and stiffness composite club-footed pile.
Description
Technical Field
The invention relates to a construction method of a pile.
Background
In the construction of the existing pipe sinking cast-in-place pile, expanded-base cast-in-place pile, composite pile, stiff composite pile and stiff composite expanded-base pile, the pipe sinking process, the feeding process and the bottom expanding process have certain defects in the aspects of construction convenience, construction quality and the like, and further improvement is needed.
Disclosure of Invention
The invention aims to provide a construction method of a pile, which is convenient to construct and has a good effect.
The technical solution of the invention is as follows:
a pile construction method is characterized in that: comprises the following steps:
in-position: positioning the equipment pipe sinking system on a set pile position or on the near side of a constructed pile position or in the center of a constructed cement soil pile position;
(II) sinking the tube: sinking the equipment immersed tube system to a set depth;
(III) bottom expanding: and carrying out bottom expanding construction according to set requirements, wherein the bottom expanding construction is carried out according to one or more of the following methods:
(a) the method comprises the following steps of (1) putting a filling material under an outer pipe, repeatedly applying potential energy to the filling material in the outer pipe through an inner tamping pipe, an inner tamping pipe hammer and/or a mother-son pipe hammer arranged in the inner tamping pipe, performing inner tamping, inner pressure, inner tamping pressure, inner impact, inner tamping and inner tamping pressure or a combination of a plurality of the inner tamping pipe hammers, and adjusting the compaction degree of a soil body by adjusting a compaction coefficient M epsilon (D, Y, Z, V), wherein D is the sinking amount under impact energy, which is called penetration for short, and Y is the pile pressing force which does not sink under static pressure energy, which is called for short as final pressure; z is the vibration energy value which basically does not sink under the vibration energy, called the final vibration value for short, and V is the feeding volume added by multiple times of feeding, called the feeding amount for short; compacting the soil body below the outer pipe, and compacting the deep soil body below the outer pipe to form a cushion layer of an expanded foundation;
(b) the filling material is thrown under the outer pipe, potential energy repeatedly acts on the filling material under the outer pipe through one or a combination of internal ramming, internal pressure, internal ramming pressure, internal impact, internal ramming and internal ramming pressure by the internal ramming pipe, the internal ramming pipe hammer and/or the internal mother-child pipe hammer in the internal ramming pipe, so as to form a bottom step of the expanded foundation;
(c) adding a filling material to the lower part of the outer pipe, and adjusting the size and the shape of the expansion head by adjusting the form coefficient alpha epsilon (c, E, D and V); c is the distance between the bottom of the outer pipe and the bottom of the pile when the tamping and expanding is finished, E is the distance between the bottom of the inner tamping system and the bottom of the outer pipe when the tamping and expanding is finished, D is the penetration degree under the set impact energy when the filling material is tamped, and V is the volume of the filling material; obtaining an expanded head high order of an expanded foundation;
after the high-order formation of the expansion head, one of the following methods is further adopted for construction: (a) the inner rammer hammer freely falls to repeatedly punch and shear the high-order of the expansion head below the outer pipe to form a concave body in the expansion head; (b) the length of the inner ramming pipe is less than that of the outer pipe, and the high-order of the expansion head below the outer pipe is synchronously sheared under the action of the potential energy of the ramming pipe hammer double-immersed pipe system in the outer immersed pipe to form a concave body in the expansion head; (c) the length of the inner pipe rammer is greater than that of the outer pipe, and the high-order expanded head under the outer pipe is repeatedly sheared by the inner pipe rammer main and sub hammer double-immersed pipe built-in hammer system to form a concave body in the expanded head;
then, pouring a pile body to form a pointed and bullet type expanded head anchor pile anchored into the expanded head at a set depth; or firstly placing deformable and compressible materials into the concave body of the enlarged head, and then pouring the pile body to form a deformable controllable-settlement controlled pile;
in the step (III), in the bottom expanding construction, the feeding process is an outer pipe outer feeding process: a feeding hopper is annularly arranged at the upper part of the outer pipe, a plurality of feeding ports are annularly arranged at the bottom of the feeding hopper along the horizontal direction of the outer pipe, a feeding channel is vertically and uniformly distributed along the outer pipe under each feeding port, and the joint of the lower port of each feeding channel and the outer pipe is bent into the outer pipe to be used as a discharge port; or the lower port of the feeding channel is directly provided with a flap type discharge port;
the filling material is fed into a feeding hopper outside the outer pipe, and the filling material is discharged from a discharge port along a feeding channel and enters below the outer pipe; or the filling material rushes open the flap type discharge hole and enters the lower part of the outer pipe.
In the step (one), pile shoes are pre-embedded on the pile positions.
The filler is one or a combination of a plurality of granular substances, a curing agent and a cementing body.
The invention has convenient construction and good construction quality; the method can be applied to the traditional rammed pile, full rammed pile, carrier pile, internal rammed pile, stiffness composite pile and stiffness composite club-footed pile.
The outer tube feeding process can be used in combination with the inner cavity feeding process of the inner tamping tube and the cavity feeding process between the inner tube and the outer tube.
The bottom expanding process can form a water stop cushion layer, a high-ductility bottom step and a durable expanded head high-order, and can form an expanded foundation, a compression-resistant and anti-pulling expanded head and a controllable-deformation sinking-control pile.
Drawings
The invention is further illustrated by the following figures and examples.
Fig. 1 is a schematic structural view of a feeding hopper of the invention.
Fig. 2 is a schematic view of another feeding hopper structure of the invention.
Detailed Description
A construction method of a pile comprises the following steps:
in-position: positioning the equipment pipe sinking system on a set pile position or on the near side of a constructed pile position or in the center of a constructed cement soil pile position;
(II) sinking the tube: sinking the equipment immersed tube system to a set depth;
(III) bottom expanding: and carrying out bottom expanding construction according to set requirements, wherein the bottom expanding construction is carried out according to one or more of the following methods:
(a) the method comprises the following steps of (1) putting a filling material under an outer pipe, repeatedly applying potential energy to the filling material in the outer pipe through an inner tamping pipe, an inner tamping pipe hammer and/or a mother-son pipe hammer arranged in the inner tamping pipe, performing inner tamping, inner pressure, inner tamping pressure, inner impact, inner tamping and inner tamping pressure or a combination of a plurality of the inner tamping pipe hammers, and adjusting the compaction degree of a soil body by adjusting a compaction coefficient M epsilon (D, Y, Z, V), wherein D is the sinking amount under impact energy, which is called penetration for short, and Y is the pile pressing force which does not sink under static pressure energy, which is called for short as final pressure; z is the vibration energy value which basically does not sink under the vibration energy, called the final vibration value for short, and V is the feeding volume added by multiple times of feeding, called the feeding amount for short; compacting the soil body below the outer pipe, and compacting the deep soil body below the outer pipe to form a cushion layer of an expanded foundation;
(b) the filling material is thrown under the outer pipe, potential energy repeatedly acts on the filling material under the outer pipe through one or a combination of internal ramming, internal pressure, internal ramming pressure, internal impact, internal ramming and internal ramming pressure by the internal ramming pipe, the internal ramming pipe hammer and/or the internal mother-child pipe hammer in the internal ramming pipe, so as to form a bottom step of the expanded foundation;
(c) adding a filling material to the lower part of the outer pipe, and adjusting the size and the shape of the expansion head by adjusting the form coefficient alpha epsilon (c, E, D and V); c is the distance between the bottom of the outer pipe and the bottom of the pile when the tamping and expanding is finished, E is the distance between the bottom of the inner tamping system and the bottom of the outer pipe when the tamping and expanding is finished, D is the penetration degree under the set impact energy when the filling material is tamped, and V is the volume of the filling material; obtaining an expanded head high order of an expanded foundation;
after the high-order formation of the expansion head, one of the following methods is further adopted for construction: (a) the inner rammer hammer freely falls to repeatedly punch and shear the high-order of the expansion head below the outer pipe to form a concave body in the expansion head; (b) the length of the inner ramming pipe is less than that of the outer pipe, and the high-order of the expansion head below the outer pipe is synchronously sheared under the action of the potential energy of the ramming pipe hammer double-immersed pipe system in the outer immersed pipe to form a concave body in the expansion head; (c) the length of the inner pipe rammer is greater than that of the outer pipe, and the high-order expanded head under the outer pipe is repeatedly sheared by the inner pipe rammer main and sub hammer double-immersed pipe built-in hammer system to form a concave body in the expanded head;
then, pouring a pile body to form a pointed and bullet type expanded head anchor pile anchored into the expanded head at a set depth; or firstly placing deformable and compressible materials into the concave body of the enlarged head, and then pouring the pile body to form a deformable controllable-settlement controlled pile;
in the step (III), in the bottom expanding construction, the feeding process is an outer pipe outer feeding process: a feeding hopper 2 is annularly arranged at the upper part of the outer pipe 1, a plurality of feeding ports 3 are annularly arranged at the bottom of the feeding hopper along the horizontal direction of the outer pipe, a feeding channel 4 is vertically and uniformly distributed along the outer pipe under each feeding port, and the joint of the lower port of each feeding channel and the outer pipe is bent into the outer pipe to be used as a discharge port 5; or the lower port of the feeding channel is directly provided with a flap type discharge port 6 (a hinge type flap);
the filling material is fed into a feeding hopper outside the outer pipe, and the filling material is discharged from a discharge port along a feeding channel and enters below the outer pipe; or the filling material rushes open the flap type discharge hole and enters the lower part of the outer pipe.
In the step (one), pile shoes are pre-embedded on the pile positions.
The filling material is one or more of loose granules, a curing agent and a cementing body, such as sand, broken bricks, broken concrete, recycled aggregate, cement soil, cement mortar, cement mixture and dry and wet concrete.
Claims (3)
1. A pile construction method is characterized in that: comprises the following steps:
in-position: positioning the equipment pipe sinking system on a set pile position or on the near side of a constructed pile position or in the center of a constructed cement soil pile position;
(II) sinking the tube: sinking the equipment immersed tube system to a set depth;
(III) bottom expanding: and carrying out bottom expanding construction according to set requirements, wherein the bottom expanding construction is carried out according to one or more of the following methods:
(a) the method comprises the following steps of (1) putting a filling material under an outer pipe, repeatedly applying potential energy to the filling material in the outer pipe through an inner tamping pipe, an inner tamping pipe hammer and/or a mother-son pipe hammer arranged in the inner tamping pipe, performing inner tamping, inner pressure, inner tamping pressure, inner impact, inner tamping and inner tamping pressure or a combination of a plurality of the inner tamping pipe hammers, and adjusting the compaction degree of a soil body by adjusting a compaction coefficient M epsilon (D, Y, Z, V), wherein D is the sinking amount under impact energy, which is called penetration for short, and Y is the pile pressing force which does not sink under static pressure energy, which is called for short as final pressure; z is the vibration energy value which basically does not sink under the vibration energy, called the final vibration value for short, and V is the feeding volume added by multiple times of feeding, called the feeding amount for short; compacting the soil body below the outer pipe, and compacting the deep soil body below the outer pipe to form a cushion layer of an expanded foundation;
(b) the filling material is thrown under the outer pipe, potential energy repeatedly acts on the filling material under the outer pipe through one or a combination of internal ramming, internal pressure, internal ramming pressure, internal impact, internal ramming and internal ramming pressure by the internal ramming pipe, the internal ramming pipe hammer and/or the internal mother-child pipe hammer in the internal ramming pipe, so as to form a bottom step of the expanded foundation;
(c) adding a filling material to the lower part of the outer pipe, and adjusting the size and the shape of the expansion head by adjusting the form coefficient alpha epsilon (c, E, D and V); c is the distance between the bottom of the outer pipe and the bottom of the pile when the tamping and expanding is finished, E is the distance between the bottom of the inner tamping system and the bottom of the outer pipe when the tamping and expanding is finished, D is the penetration degree under the set impact energy when the filling material is tamped, and V is the volume of the filling material; obtaining an expanded head high order of an expanded foundation;
after the high-order formation of the expansion head, one of the following methods is further adopted for construction: (a) the inner rammer hammer freely falls to repeatedly punch and shear the high-order of the expansion head below the outer pipe to form a concave body in the expansion head; (b) the length of the inner ramming pipe is less than that of the outer pipe, and the high-order of the expansion head below the outer pipe is synchronously sheared under the action of the potential energy of the ramming pipe hammer double-immersed pipe system in the outer immersed pipe to form a concave body in the expansion head; (c) the length of the inner pipe rammer is greater than that of the outer pipe, and the high-order expanded head under the outer pipe is repeatedly sheared by the inner pipe rammer main and sub hammer double-immersed pipe built-in hammer system to form a concave body in the expanded head;
then, pouring a pile body to form a pointed and bullet type expanded head anchor pile anchored into the expanded head at a set depth; or firstly placing deformable and compressible materials into the concave body of the enlarged head, and then pouring the pile body to form a deformable controllable-settlement controlled pile;
in the step (III), in the bottom expanding construction, the feeding process is an outer pipe outer feeding process: a feeding hopper is annularly arranged at the upper part of the outer pipe, a plurality of feeding ports are annularly arranged at the bottom of the feeding hopper along the horizontal direction of the outer pipe, a feeding channel is vertically and uniformly distributed along the outer pipe under each feeding port, and the joint of the lower port of each feeding channel and the outer pipe is bent into the outer pipe to be used as a discharge port; or the lower port of the feeding channel is directly provided with a flap type discharge port;
the filling material is fed into a feeding hopper outside the outer pipe, and the filling material is discharged from a discharge port along a feeding channel and enters below the outer pipe; or the filling material rushes open the flap type discharge hole and enters the lower part of the outer pipe.
2. The pile construction method according to claim 1, wherein: in the step (one), pile shoes are pre-embedded on the pile positions.
3. The pile construction method according to claim 1, wherein: the filler is one or a combination of a plurality of granular substances, a curing agent and a cementing body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011317325.4A CN112323784A (en) | 2020-11-23 | 2020-11-23 | Pile construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011317325.4A CN112323784A (en) | 2020-11-23 | 2020-11-23 | Pile construction method |
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| CN112323784A true CN112323784A (en) | 2021-02-05 |
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| CN202011317325.4A Pending CN112323784A (en) | 2020-11-23 | 2020-11-23 | Pile construction method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102226341A (en) * | 2011-04-25 | 2011-10-26 | 朱建新 | Construction method for piles |
| CN105350525A (en) * | 2015-11-09 | 2016-02-24 | 朱建新 | Construction method for piles |
| CN105926594A (en) * | 2016-04-29 | 2016-09-07 | 朱龙 | Double-pipe construction method for static pressure pipe-sinking carrier cast-in-place pile |
| CN106049464A (en) * | 2016-06-06 | 2016-10-26 | 朱建新 | Construction method for pile |
| CN106759332A (en) * | 2016-12-06 | 2017-05-31 | 朱建新 | The construction method and construction equipment of stake |
| CN109853564A (en) * | 2019-04-08 | 2019-06-07 | 王磊 | A kind of construction method and dedicated inner tamping tube hammer of compaction pile |
-
2020
- 2020-11-23 CN CN202011317325.4A patent/CN112323784A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102226341A (en) * | 2011-04-25 | 2011-10-26 | 朱建新 | Construction method for piles |
| CN105350525A (en) * | 2015-11-09 | 2016-02-24 | 朱建新 | Construction method for piles |
| CN105926594A (en) * | 2016-04-29 | 2016-09-07 | 朱龙 | Double-pipe construction method for static pressure pipe-sinking carrier cast-in-place pile |
| CN106049464A (en) * | 2016-06-06 | 2016-10-26 | 朱建新 | Construction method for pile |
| CN106759332A (en) * | 2016-12-06 | 2017-05-31 | 朱建新 | The construction method and construction equipment of stake |
| CN109853564A (en) * | 2019-04-08 | 2019-06-07 | 王磊 | A kind of construction method and dedicated inner tamping tube hammer of compaction pile |
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Application publication date: 20210205 |
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