CN110644475A - Method for filling pile by inserting steel bars after long spiral drilling and concrete pressure pouring - Google Patents
Method for filling pile by inserting steel bars after long spiral drilling and concrete pressure pouring Download PDFInfo
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- CN110644475A CN110644475A CN201910910181.4A CN201910910181A CN110644475A CN 110644475 A CN110644475 A CN 110644475A CN 201910910181 A CN201910910181 A CN 201910910181A CN 110644475 A CN110644475 A CN 110644475A
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- concrete
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- long spiral
- reinforcement cage
- pouring
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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
Abstract
The invention discloses a method for filling a pile with inserted bars after long spiral drilling holes are filled with concrete by pressure, which comprises the following steps of (1) drilling holes by a long spiral drilling machine to a designed depth; (2) when the long spiral drill is lifted, a high-pressure concrete pump is used for pressing and pouring concrete into the hole at a certain pressure through a central channel of the drill rod, and the concrete is poured to a set elevation; (3) and inserting the reinforcement cage into the concrete to a designed elevation by means of the self weight of the reinforcement cage and/or special vibration equipment to form the reinforced concrete cast-in-place pile. The invention has the beneficial effects that: the pile body quality is easy to guarantee, the concrete compactness is good, the strength is high, the soil is closely contacted with the surrounding soil body, and the friction force of the pile body is increased; the pile tip has no deficient soil, so that common quality problems such as pile breakage, diameter shrinkage, hole collapse and the like are prevented.
Description
Technical Field
The invention belongs to the field of building construction, and particularly relates to a method for filling a pile by inserting bars after long spiral drilling and concrete pressure pouring
Background
At present, the construction of the pile foundation with the diameter of more than medium diameter in China is developed into the hole forming of a rotary drilling rig, the work efficiency is greatly improved, but the small-diameter pile is not greatly improved in China, the hole forming of the traditional diving drilling rig is relatively quick, the adaptation to the stratum is limited, and meanwhile, the problem of a conduit pouring process exists.
Disclosure of Invention
The invention aims to solve the technical problem of providing a method for constructing a pile foundation with a medium and small diameter, and solving the two technical problems of pressure irrigation and steel bar insertion in construction.
In order to solve the problems, the technical scheme of the invention is that the method for filling the pile by inserting the steel bars after the concrete is grouted by the long spiral drill hole pressure comprises the following steps
(1) Drilling by a long spiral drilling machine to a designed depth;
(2) when the long spiral drill is lifted, a high-pressure concrete pump is used for pressing and pouring concrete into the hole at a certain pressure through a central channel of the drill rod, and the concrete is poured to a set elevation;
(3) and inserting the reinforcement cage into the concrete to a designed elevation by means of the self weight of the reinforcement cage and/or special vibration equipment to form the reinforced concrete cast-in-place pile.
Further, the construction method also comprises a physical component which displays the post-press-cast steel bar filling pile predictably through digital utilization of building elements by using the BIM technology and the technical and management problems which can occur in the construction process.
Further, the software utilized by the BIM technology comprises Mingshi 58, digital project management and a BIMone software platform.
Furthermore, the bottom of the reinforcement cage is a cone with a height H, and H is 300mm-700 mm.
Furthermore, a reinforcing ring is arranged at the position, close to the tip of the cone, of the reinforcement cage.
Furthermore, a stiffening hoop is arranged at the position where the reinforcement cage is connected with the cone.
The invention has the beneficial effects that:
1. the pile body quality is easy to guarantee, the concrete compactness is good, the strength is high, the soil is closely contacted with the surrounding soil body, and the friction force of the pile body is increased; the pile tip has no deficient soil, so that common quality problems such as pile breakage, diameter shrinkage, hole collapse and the like are prevented;
2. the construction efficiency is high, the continuity of hole forming, pouring and bar inserting is finished, and the pile forming speed is high;
3. the environment-friendly wall-protecting wall is green, mud is not needed for protecting the wall, the noise is low, the soil drilled by a civil drilling machine in a rotating mode can be directly loaded and cleaned after being aired, and the environment is green and environment-friendly;
4. the method has the advantages of good economic benefit, saving of mud preparation and clearing cost, high construction efficiency, reasonable manufacturing cost, more superiority in northwest collapsible loess areas and wide application prospect;
5. the BIM technology improves the management efficiency of construction organization, the technology of the technology is mature, but the requirement on construction organization is high, continuous construction of pore forming, concrete pressure pouring and post-inserting of a reinforcement cage is carried out, the interval time is too long, and the problems of hole collapse, pile breakage, improper insertion of the reinforcement cage and the like are easily formed. And (4) improving the construction organization by means of the BIM technology.
Drawings
FIG. 1 is a flow chart of an embodiment of the present invention;
fig. 2 is a bottom structure view of the reinforcement cage according to the embodiment of the present invention.
Wherein, 1, the hoop of putting more energy into, 2, steel reinforcement cage owner muscle, 3, the beaded finish, 4, the stirrup, H, for the circular cone height.
Detailed Description
In order to make the technical solutions of the present invention better understood, 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.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
As shown in fig. 1
A method for filling pile with steel bars after long spiral drilling and concrete pressure filling includes the following steps
(1) Leveling field
According to the natural terrace condition, the pile head concrete protection height is not less than 50cm, and the excess earthwork is dug out properly, so that the waste of the pile concrete and the increase of the loss amount are reduced. According to multiple construction site investigation and analysis, because the pile body is longer, the mud output amount is large during pile forming, a small-sized excavator is needed to search the pile position, and the reserved soil at least reaches the elevation of the top of the crown beam, so that the disturbance of the pile head, the deviation of the pile position, the slag addition of the pile head concrete, the distortion and the deformation of the part of the pile body steel bar anchored into the bearing platform beam and the like are avoided.
(2) Pile location rechecking
And (4) carrying out pile position measurement and elevation measurement by using a coordinate reference point provided by a construction unit according to a design drawing by using a GPS measuring instrument, and simultaneously carrying out reference point rechecking by using a total station. The paying-off result is rechecked through the technology, and the report supervision company checks, accepts and signs. And (5) making permanent and temporary reference pile positions.
(3) Drill in place
The concrete pump is connected with a drill rod of the pile machine before the drilling machine is in place, and the drilling machine is required to be stable and not to incline or displace after being in place, so that a control scale is made on the rack for accurately controlling the drilling depth, and observation and recording can be conveniently carried out in the construction process.
(4) Drill hole forming
The reverse method is adopted, and the quality problems of pile fleeing, pile leakage and the like caused by dense pile positions are avoided. Before drilling, a concrete pump and a pumping pipeline are lubricated and communicated by clear water, and then a certain amount of mortar is pumped. And (4) sealing a valve of the drill bit, moving the drill bit down to the ground, and beginning to drill, wherein the deviation between the center of the drilling tool and the pile position is not more than 20 mm. When drilling, after a drill bit is aligned with a pile position point, the drilling machine is required to be started to drill, the drilling speed is stable, and the drilling machine is prevented from being inclined and dislocated during drilling; in the drilling process, when an unfavorable geological condition or an underground obstacle is found, the drilling is stopped immediately, and a construction unit and a design unit are informed to determine a processing method, modify process parameters or other reliable measures; and meanwhile, the drill rod is required to be rotated while hole-side muck is removed, so that the condition that the concrete of the pile body is added with slag when the drill rod is lifted is avoided. And when the hole is drilled to the designed elevation, stopping drilling, and cleaning and lifting the hole in several minutes after the hole is drilled in an empty mode.
(5) Acceptance of final hole
According to the designed pile length, a striking mark is made on the drilling tower in advance to serve as a basis for determining the pile length in construction, the requirement of the pile length is met when a drill bit of a drilling machine reaches the mark position, the drilling machine drills to the depth and the soil layer required by the design, and the cast-in-place concrete construction can be carried out after the site supervisor checks and accepts the mark.
(6) Concrete is poured while carrying brill
(6.1) after the hole forming of the drilling machine reaches the designed depth, stopping drilling of the drill rod, conveying concrete to the bottom end of the drill rod, after the drill rod core tube reaches a certain height, slowly lifting the drilling tool by 0.1-0.3 m, observing whether the pressure of the concrete conveying pump changes or not, judging whether valves on two sides of the drill bit are opened or not, after confirming that the valves on two sides of the drill bit are opened and conveying the concrete smoothly, starting concrete pressure pouring work, and strictly prohibiting concrete pumping after the drill bit is lifted first.
(6.2) the drilling machine pumps concrete while lifting the drill, the drill lifting speed cannot be too high, the speed is controlled to be 1.2-1.5 m/min, and the lifting height of the drilling tool is flexibly controlled on site according to a certain lifting amount every time the conveying pump pumps the concrete. The discharge hole at the bottom end of the drilling tool is not higher than the liquid level of the concrete in the hole, so that the drill bit is always buried below the concrete surface of the pile body by not less than 1m, the pile body concrete pressure filling is continuously completed at one time, and no intermittent operation is required in midway.
(6.3) the filling coefficient of the pressure filling pile is preferably 1.0-1.2, and the height of the pile top excess filling is not less than 300 mm.
(6.4) in the construction process, constructors should fill various record forms carefully, timely, reliably and accurately, and relevant personnel sign the forms timely.
(7) Cleaning drilling mud
In the drilling rod lifting process, 2 workers are equipped to clean soil on the spiral drilling rod, the pile driver is moved away after concrete pressure filling is completed, a small excavator is used for cleaning redundant soil at a pile opening, and the clay on concrete of a pile body is cleaned secondarily in a manner of matching with manpower until a fresh concrete surface is cleaned, so that an operation surface is created for inserting a reinforcement cage.
(8) Hoisting reinforcement cage and vibrating rod
(8.1) transporting the reinforcement cage to a position near a drilling machine in advance, hoisting the vibrator and the vibration guide pipe by using a crane, drawing by using a small excavator, and inserting the vibrator and the vibration guide pipe into the reinforcement cage.
And (8.2) hoisting the steel reinforcement cage integrally by using a crane. The crane simultaneously hoists the vibrator and the top of the reinforcement cage, the top of the vibrator is higher than the top of the reinforcement cage, two steel wire ropes are hung on a second reinforcing hoop of the reinforcement cage, the bottom of the vibration pipe presses the conical head of the reinforcement cage, and the small excavator is matched with the lifting conical head of the reinforcement cage. With the hoisting of the crane, the mini excavator moves horizontally. The steel reinforcement cage can not be dragged to the ground in the hoisting process, so that the steel reinforcement cage is prevented from bending and deforming. Before the steel reinforcement cage is inserted downwards, an iron sheet hoop with the diameter of 1200mm and the height of 600mm is additionally arranged at the position of a pile body, so that concrete overflow when the steel reinforcement cage is inserted downwards is prevented, and the concrete loss of a pile head is avoided.
(9) Down-inserted reinforcement cage and starting vibrating rod
After the steel reinforcement cage is lifted vertically, the center of the pile body is aligned when the steel reinforcement cage enters the hole, the steel reinforcement cage is inserted to a certain depth by the dead weight of the vibrator, and then the vibrator is started. The vibrator drives the guide pipe and the reinforcement cage to be inserted to the designed elevation together
(10) Measuring the elevation of the cage top
Survey personnel execute in advance on the vibration pipe and survey the elevation mark, and the steel reinforcement cage is with level appearance control elevation when inserting down, ensures that the whole steel reinforcement cage is inserted down to the design elevation.
(11) Lifting vibration rod
After the steel bar cage is tested again and the standard height is correct, the vibrator and the guide pipe are pulled out, and the pipe should be pulled out and vibrated at the same time, so that the compactness of concrete is ensured.
As shown in figure 2, the bottom of the reinforcement cage is in the shape of a cone 300mm-700mm high. And a reinforcing ring is arranged at the position of the reinforcement cage close to the tip of the cone. And a stiffening hoop is arranged at the position where the reinforcement cage is connected with the cone.
BIM (building information modeling, BIM for short) is a process of unified coordination from planning, designing and constructing to managing stages, and is operating software for converting concepts using standards into corresponding data.
Ideally, the BIM process utilizes centralized digital three-dimensional modeling as a core resource. Each building participant plans the data model while also allowing other people's rights and data modifications. At this stage, the BIM model consists of detailed BIM units, such as doors, walls, equipment, etc.
BIM images look like simple 3D CAD files, and in fact BIM components are more complex in application programs and provide better operational flexibility. When creating a single component, each BIM component acts as a single unique element within the architectural form, when loaded into the project model, allows the user to see the relationship build between the component and other elements; for example, a multi-ma turnstile is loaded into a single measurement model.
If the modeled object is more open than the original structure, exceeding or violating its constraints, the system will jump out of the associated prompt message.
BIM modeling will greatly improve work efficiency, that is, it can prevent potential conflicts that may occur to a building project during the planning phase. BIM systems allow architects and designers to more quickly and easily understand and implement the features of gating, automation, and other multi-product products.
After modeling is completed, information needed by owners or maintenance personnel can be provided finally, because all products have clear identification and service requirement description
It will be appreciated by those of ordinary skill in the art that the embodiments described herein are intended to assist the reader in understanding the principles of the invention and are to be construed as being without limitation to such specifically recited embodiments and examples. Those skilled in the art can make various other specific changes and combinations based on the teachings of the present invention without departing from the spirit of the invention, and these changes and combinations are within the scope of the invention.
Claims (6)
1. A method for filling pile with steel bars after long spiral drilling and concrete pressure filling comprises the following steps
(1) Drilling by a long spiral drilling machine to a designed depth;
(2) when the long spiral drill is lifted, a high-pressure concrete pump is used for pressing and pouring concrete into the hole at a certain pressure through a central channel of the drill rod, and the concrete is poured to a set elevation;
(3) and inserting the reinforcement cage into the concrete to a designed elevation by means of the self weight of the reinforcement cage and/or special vibration equipment to form the reinforced concrete cast-in-place pile.
2. The method for pouring the pile with the inserted bars after the long spiral drill hole is grouted with the concrete, which is obtained according to the claim 1, is characterized in that: also included are physical elements that exhibit post-grouted concrete dowel piles predictably through the use of building elements, together with technical and management issues that may arise during this construction process, using BIM technology simultaneously.
3. The method for pouring the pile with the inserted bars after the long spiral drill hole is grouted with the concrete, which is obtained according to the claim 2, is characterized in that: the software utilized by the BIM technology comprises Mingshi 58, digital project management and a BIMone software platform.
4. The method for pouring the pile with the inserted bars after the long spiral drill hole is grouted with the concrete, which is obtained according to the claim 1, is characterized in that: the bottom of the steel reinforcement cage is a cone with the height of 300mm-700 mm.
5. The method for pouring the pile with the inserted bars after the long spiral drill hole is grouted with the concrete, which is obtained according to the claim 4, is characterized in that: and a reinforcing ring is arranged at the position of the reinforcement cage close to the tip of the cone.
6. The method for pouring the pile with the inserted bars after the long spiral drill hole is grouted with the concrete, which is obtained according to the claim 4, is characterized in that: and a stiffening hoop is arranged at the position where the reinforcement cage is connected with the cone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910910181.4A CN110644475A (en) | 2019-09-25 | 2019-09-25 | Method for filling pile by inserting steel bars after long spiral drilling and concrete pressure pouring |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910910181.4A CN110644475A (en) | 2019-09-25 | 2019-09-25 | Method for filling pile by inserting steel bars after long spiral drilling and concrete pressure pouring |
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| CN110644475A true CN110644475A (en) | 2020-01-03 |
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| CN201910910181.4A Pending CN110644475A (en) | 2019-09-25 | 2019-09-25 | Method for filling pile by inserting steel bars after long spiral drilling and concrete pressure pouring |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113699995A (en) * | 2021-07-26 | 2021-11-26 | 甘肃旭盛显示科技有限公司 | Construction method for matching and hoisting vibrating rod and reinforcement cage |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1676761A (en) * | 2005-04-18 | 2005-10-05 | 祁春伟 | Long-spiral post-joint-bar bored concrete pile construction method |
| CN102628266A (en) * | 2011-12-30 | 2012-08-08 | 中铁二局股份有限公司 | Construction method of long spiral cast-in-situ bored pile |
| WO2017110314A1 (en) * | 2015-12-25 | 2017-06-29 | 株式会社オーク | Piling construction management method |
| CN206721870U (en) * | 2017-04-18 | 2017-12-08 | 中冶建工集团有限公司 | A kind of long auger guncreting pile steel reinforcement cage |
| CN108104115A (en) * | 2017-12-26 | 2018-06-01 | 北京市第五建筑工程集团有限公司 | Cast-in-place pile construction method |
-
2019
- 2019-09-25 CN CN201910910181.4A patent/CN110644475A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1676761A (en) * | 2005-04-18 | 2005-10-05 | 祁春伟 | Long-spiral post-joint-bar bored concrete pile construction method |
| CN102628266A (en) * | 2011-12-30 | 2012-08-08 | 中铁二局股份有限公司 | Construction method of long spiral cast-in-situ bored pile |
| WO2017110314A1 (en) * | 2015-12-25 | 2017-06-29 | 株式会社オーク | Piling construction management method |
| CN206721870U (en) * | 2017-04-18 | 2017-12-08 | 中冶建工集团有限公司 | A kind of long auger guncreting pile steel reinforcement cage |
| CN108104115A (en) * | 2017-12-26 | 2018-06-01 | 北京市第五建筑工程集团有限公司 | Cast-in-place pile construction method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113699995A (en) * | 2021-07-26 | 2021-11-26 | 甘肃旭盛显示科技有限公司 | Construction method for matching and hoisting vibrating rod and reinforcement cage |
| CN113699995B (en) * | 2021-07-26 | 2022-07-22 | 甘肃旭盛显示科技有限公司 | Construction method for matching and hoisting vibrating rod and reinforcement cage |
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