CN111305224A - Boot-penetrating construction method for miniature steel pipe support pile - Google Patents
Boot-penetrating construction method for miniature steel pipe support pile Download PDFInfo
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- CN111305224A CN111305224A CN202010149871.5A CN202010149871A CN111305224A CN 111305224 A CN111305224 A CN 111305224A CN 202010149871 A CN202010149871 A CN 202010149871A CN 111305224 A CN111305224 A CN 111305224A
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- steel pipe
- pipe support
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- support pile
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
- E02D17/207—Securing of slopes or inclines with means incorporating sheet piles or piles
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a method for shoe penetrating construction of a miniature steel pipe support pile, and relates to the technical field of slope anti-sliding support construction of deep foundation pit excavation in roadbed engineering. The method for shoe penetrating construction of the miniature steel pipe support pile comprises a high-power generator set, a formed hole, a first section of miniature steel pipe support pile, a special pipe shoe and a hammering device rod piece, and efficient construction of the miniature steel pipe anti-sliding support pile of the deep foundation pit is achieved by using a special pipe shoe device. Firstly, machining and manufacturing a miniature steel pipe support pile according to a design drawing; meanwhile, processing and manufacturing special pipe boots; then, after the miniature steel pipe support piles and the special pipe shoes enter the field, a high-power generator set and a dry-type down-the-hole drill are immediately entered into the field to perform drilling construction, and holes are formed; then connecting the special pipe shoe to the bottom of the first section of pile, and using a rod frame hammering device to carry out hammering construction; finally hammering and sinking the second section of pile; and (4) repeatedly operating the subsequently connected micro steel pipe support piles to the designed length according to the method.
Description
Technical Field
The invention relates to the technical field of roadbed engineering deep foundation pit excavation slope anti-slip support construction, in particular to a method for shoe penetrating construction of a miniature steel pipe support pile.
Background
In modern highway construction engineering, deep foundation pit engineering which needs construction due to limited construction site caused by difficulty in land acquisition and removal is often encountered. Because the deep foundation pit support design scheme has more forms, most of the deep foundation pits need certain operation working surface fields, and particularly, the top opening of the slope is wider during excavation. Therefore, in recent years, more micro steel pipe support piles are designed before deep foundation pit excavation. The hammer of the rod piece of the pile driver cannot be well completed due to the fact that the design unit design aperture and the aperture and wall thickness (industrial standard) of the micro steel pipe support pile are often in conflict.
In order to overcome the problems, the boot penetrating construction method of the miniature steel pipe support pile is designed, a special pipe boot is manufactured in advance, the special pipe boot is connected to the bottom of the first section of miniature steel pipe support pile through a threading, and then a rod piece of a drilling pile machine effectively hammers the top of the connected pipe boot. The method is simple to manufacture, low in cost and strong in supporting effect, and can effectively solve the problems that the difficulty of hammering a finished steel pipe supporting pile is increased due to poor drilling and hole forming effects, and hammering of a rod piece of the pile driver cannot be well completed due to the fact that the design unit aperture and the aperture and wall thickness (industrial standard) of the miniature steel pipe supporting pile often conflict.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a boot penetrating construction method for a micro steel pipe support pile, which solves the problem that hammering of a rod piece of a pile driver cannot be well completed due to the fact that design unit design aperture and wall thickness (industrial standard) of the micro steel pipe support pile often conflict.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: a method for shoe penetrating construction of a miniature steel pipe support pile comprises a high-power generator set and a dry-type down-the-hole drill, and can also be used for hammering pile construction, formed holes, a first section of miniature steel pipe support pile, a special pipe shoe and a hammering device rod piece, wherein the formed holes are formed in the ground, the first section of miniature steel pipe support pile is arranged in the formed holes, the bottom of the first section of miniature steel pipe support pile is connected with the special pipe shoe, the first section of miniature steel pipe support pile is in a hollow cylindrical shape, the hammering device rod piece can penetrate through the first section of miniature steel pipe support pile so as to act on the special pipe shoe, and the high-power generator set can meet the electric energy requirements of drilling, hammering pile construction and pile hammering construction for the dry-type down-the-hole drill, and comprises the following steps:
the method comprises the following steps: processing and manufacturing a micro steel pipe support pile according to a design drawing, wherein the length of a first section of the micro steel pipe support pile is controlled to be 1-1.5 meters, a bottom opening of a pipe section adopts an inner sleeve threaded opening, and a top opening adopts an outer sleeve threaded opening; meanwhile, a special pipe boot is processed and manufactured, the length of an external screw opening of an upper opening mantle fiber of the special pipe boot is controlled to be 10-15cm, a bottom opening of the special pipe boot is processed and manufactured into a cutting edge shape, and the pipe wall thickness of the special pipe boot is 10-15mm larger than that of the micro steel pipe support pile;
step two: after a first section of miniature steel pipe support piles and special pipe shoes enter the field, a high-power generator set and a hammering pile are immediately entered into the field for construction, drilling is carried out, and holes are formed; paying attention to the protection of the formed hole, and immediately carrying out construction of the hammering micro steel pipe support pile after the hole is inspected to be qualified; then connecting the special pipe shoe to the bottom of the first section of the miniature steel pipe support pile, and performing hammering construction by using a hammering device rod piece;
step three: and (3) continuing hammering the rod piece of the lengthened hammering device to sink the second section of the miniature steel pipe support pile, repeatedly operating the subsequently connected miniature steel pipe support pile to the designed length according to the method, and after the first group of roots are tested to be qualified after construction, starting to perform positioning steel bar installation and cement injection construction in the pile.
Preferably, the pore diameter of the formed pore is larger than that of the first section of the micro steel pipe support pile.
Preferably, the drilled hole is a drilled hole.
Preferably, the material of the special pipe boot is high-carbon steel and is subjected to heat treatment.
(III) advantageous effects
The invention provides a boot penetrating construction method for a miniature steel pipe support pile. The method has the following beneficial effects:
according to the boot penetrating construction method for the micro steel pipe support pile, the machined pipe boot mantle fiber is connected to the bottom of the first section of finished steel pipe pile, so that the problem that the hammering of a rod piece of a pile driver cannot be well completed due to the fact that the design unit design aperture, the aperture of the micro steel pipe support pile and the wall thickness (industrial standard) often conflict is solved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged partial view of structure A-A of the present invention.
In the figure: 1. a high-power generator set; 2. the dry down-the-hole drill can also be used for hammering the pile construction 3 and forming a hole; 4. a first section of miniature steel pipe support piles; 5. a specialty pipe boot; 6. a hammer stem.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, 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, the present invention provides a technical solution: a method for shoe penetrating construction of a micro steel pipe support pile comprises a high-power generator set 1, a dry type down-the-hole drilling machine can also be used for hammering pile construction 2, a formed hole 3, a first section of micro steel pipe support pile 4, a special pipe shoe 5 and a hammering device rod piece 6, the formed hole 3 is arranged on the ground, the first section of micro steel pipe support pile 4 is arranged in the formed hole 3, the bottom of the first section of micro steel pipe support pile 4 is connected with the special pipe shoe 5, the first section of micro steel pipe support pile 4 is in a hollow cylindrical shape, the hammering device rod piece 6 can penetrate through the first section of micro steel pipe support pile 4 and can act on the special pipe shoe 5, the high-power generator set 1 can meet the requirements of drilling, hammering pile construction 2 and electric energy for hammering pile construction of the dry type down-the hole drilling machine, the aperture of the formed hole 3 is larger than that of the first section of micro steel pipe support pile 4, the formed hole 3 is drilled, the material of the special, the method comprises the following steps:
the method comprises the following steps: manufacturing a miniature steel pipe support pile according to the processing of a design drawing, wherein the length of a first section of miniature steel pipe support pile 4 is controlled to be 1-1.5 meters, the bottom opening of a pipe section adopts an inner sleeve threaded opening, and the top opening adopts an outer sleeve threaded opening; meanwhile, the special pipe boot 5 is processed and manufactured, the length of an external screw opening of a mantle fiber of the upper opening of the special pipe boot 5 is controlled to be 10-15cm, the bottom opening of the special pipe boot 5 is processed and manufactured into a cutting edge shape, and the pipe wall thickness of the special pipe boot 5 is 10-15mm larger than that of the micro steel pipe support pile;
step two: after a first section of miniature steel pipe support piles 4 and special pipe shoes 5 enter the field, a high-power generator set 1 and a hammering pile construction 2 enter the field immediately to perform drilling construction, and holes 3 are formed; paying attention to the protection of the formed hole 3, and immediately carrying out construction of the hammering micro steel pipe support pile after the hole is inspected to be qualified; then connecting the special pipe shoe 5 to the bottom of the first section of the miniature steel pipe support pile 4, and performing hammering construction by using a hammering device rod piece 6;
step three: and (3) continuing hammering the sinking second section of the miniature steel pipe support pile by lengthening the rod piece of the hammering device, repeatedly operating the subsequent connected miniature steel pipe support pile to the designed length according to the method, and after the first group of 10 reports are qualified after construction, starting to perform positioning steel bar installation and cement injection construction in the pile.
The working principle is as follows: firstly, purchasing the micro steel pipe support piles with corresponding specifications according to a design construction drawing, and paying attention to the fact that the length of each pipe joint is controlled to be (1-1.5) meters as long as possible, so that manual threading is facilitated to connect subsequent pipe joints. The number of the pipe boots needing to be processed simultaneously is calculated, particularly the length of an external screw opening of an upper opening mantle fiber of the pipe boots is controlled to be 10-15cm, the bottom opening of the pipe boots is processed into a cutting edge shape, and the pipe boots are particularly required to be made of high-carbon steel and subjected to heat treatment; and the thickness of the pipe wall of the pipe shoe is larger than that of the micro steel pipe support pile, and is generally 10-15 mm. When the miniature steel pipe support piles and the special pipe shoes enter the field, dry down-the-hole drill is adopted for drilling holes, and the diameter of the drilled holes is required to be larger than the outer diameter of the steel pipe support piles. And after the hole depth reaches the design and specification, hammering to sink the pile, connecting the mantle fiber of the special pipe shoe 5 to the bottom of the first section of the miniature steel pipe supporting pile, hammering the top of the first section of the miniature steel pipe supporting pile by the pile driver through the hammer and the rod piece, stopping hammering when the distance between the top of the first section of the miniature steel pipe supporting pile 4 and the ground line is 30-50cm, connecting the mantle fiber of the second section of the miniature steel pipe supporting pile to the top of the first section of the pile by constructors, and then continuously hammering the rod piece of the hammer to sink the second section of the miniature steel pipe supporting pile by lengthening the rod piece of the hammer. And (4) repeatedly operating the subsequently connected micro steel pipe support piles to the designed length according to the method. And after the first group of 10 reports are qualified after the construction, the installation of the positioning reinforcing steel bars in the pile and the construction of cement slurry injection are started. Special attention is paid to protecting the top of each pile position pipe before grouting, and a wood board or other materials are adopted to cover the top opening of each pile position to prevent soil or sundries from blocking the pipe hole in the later period. In summary, the boot-penetrating construction method of the micro steel pipe support pile can realize the boot-penetrating construction of the micro steel pipe support pile of the deep foundation pit only by connecting the special pipe boot 5 with the bottom of the first section of the micro steel pipe support pile 4 through the mantle fiber. The special pipe shoe plays a role in guiding and improving the strength of materials at a hammering position, the method is simple, low in cost and strong in supporting effect, and the problems that the difficulty of hammering a finished steel pipe supporting pile is increased and the construction speed is low due to poor hole drilling and forming effect can be effectively solved.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. A method for shoe penetrating construction of a miniature steel pipe support pile comprises a high-power generator set (1) and a dry type down-the-hole drill, wherein the dry type down-the-hole drill can also be used for hammering pile construction (2), a formed hole (3), a first section of miniature steel pipe support pile (4), a special pipe shoe (5) and a hammering device rod piece (6), the formed hole (3) is arranged on the ground, a first section of miniature steel pipe support pile (4) is arranged in the formed hole (3), the bottom of the first section of miniature steel pipe support pile (4) is connected with the special pipe shoe (5), the first section of miniature steel pipe support pile (4) is in a hollow cylinder shape, the hammering device rod piece (6) can penetrate through the first section of miniature steel pipe support pile (4) so as to act on the special pipe shoe (5), and the high-power generator set (1) can meet the electric energy of drilling, hammering pile construction (2) and the electric energy for hammering pile construction for the dry type down, the method is characterized in that: the method comprises the following steps:
the method comprises the following steps: processing and manufacturing the miniature steel pipe support piles according to a design drawing, wherein the length of a first section of miniature steel pipe support pile (4) is controlled to be 1-1.5 meters, the bottom opening of a pipe section adopts an inner sleeve threaded opening, and the top opening adopts an outer sleeve threaded opening; meanwhile, the special pipe boot (5) is processed and manufactured, the length of an external screw opening of an upper opening mantle fiber of the special pipe boot (5) is controlled to be 10-15cm, the bottom opening of the special pipe boot (5) is processed and manufactured into a cutting edge shape, and the pipe wall thickness of the special pipe boot (5) is 10-15mm larger than the thickness of the micro steel pipe support pile;
step two: after a first section of miniature steel pipe support piles (4) and special pipe shoes (5) enter the field, a high-power generator set (1) and a hammering pile construction (2) are immediately entered into the field to perform drilling construction, and holes (3) are formed; paying attention to the protection of the formed hole (3), and immediately checking and accepting to be qualified, and then constructing and hammering the miniature steel pipe support pile; then connecting the special pipe shoe (5) to the bottom of the first section of the miniature steel pipe support pile (4), and performing hammering construction by using a hammering device rod piece (6);
step three: and (3) continuing hammering the sinking second section of the miniature steel pipe support pile by lengthening the rod piece of the hammering device, repeatedly operating the subsequent connected miniature steel pipe support pile to the designed length according to the method, and after the first group of 10 reports are qualified after construction, starting to perform positioning steel bar installation and cement injection construction in the pile.
2. The method for the shoe penetrating construction of the micro steel pipe support pile according to claim 1, wherein the method comprises the following steps: the aperture of the formed hole (3) is larger than that of the first section of the miniature steel pipe support pile (4).
3. The method for the shoe penetrating construction of the micro steel pipe support pile according to claim 1, wherein the method comprises the following steps: the drilled hole (3) is a drilled hole.
4. The method for the shoe penetrating construction of the micro steel pipe support pile according to claim 1, wherein the method comprises the following steps: the material of the special pipe boot (5) is high-carbon steel and is subjected to heat treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010149871.5A CN111305224A (en) | 2020-03-06 | 2020-03-06 | Boot-penetrating construction method for miniature steel pipe support pile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010149871.5A CN111305224A (en) | 2020-03-06 | 2020-03-06 | Boot-penetrating construction method for miniature steel pipe support pile |
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| CN111305224A true CN111305224A (en) | 2020-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010149871.5A Pending CN111305224A (en) | 2020-03-06 | 2020-03-06 | Boot-penetrating construction method for miniature steel pipe support pile |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100999900A (en) * | 2006-01-09 | 2007-07-18 | 立基工程有限公司 | Bottom impacting type steel pipe concrete pole and construction method thereof |
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2020
- 2020-03-06 CN CN202010149871.5A patent/CN111305224A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100999900A (en) * | 2006-01-09 | 2007-07-18 | 立基工程有限公司 | Bottom impacting type steel pipe concrete pole and construction method thereof |
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Application publication date: 20200619 |