CN113897957A - Construction method of rock-entering cast-in-place pile - Google Patents
Construction method of rock-entering cast-in-place pile Download PDFInfo
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- CN113897957A CN113897957A CN202111347623.2A CN202111347623A CN113897957A CN 113897957 A CN113897957 A CN 113897957A CN 202111347623 A CN202111347623 A CN 202111347623A CN 113897957 A CN113897957 A CN 113897957A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
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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
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B3/00—Rotary drilling
- E21B3/02—Surface drives for rotary drilling
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B3/00—Rotary drilling
- E21B3/02—Surface drives for rotary drilling
- E21B3/022—Top drives
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/06—Down-hole impacting means, e.g. hammers
- E21B4/14—Fluid operated hammers
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Abstract
A construction method of a rock-entering cast-in-place pile comprises the following steps: 1) preparation before construction; 2) installing and debugging a pile frame and a double-power-head drilling machine; 3) drilling a long spiral drilling tool and cutting a sleeve in a follow-up manner; 4) lifting the long spiral drill rod, and replacing the drilling tool with a down-the-hole hammer; 5) impacting a down-the-hole hammer into rock and reversely rotating a sleeve to follow up cutting; 6) impacting a down-the-hole hammer into rock, and reversely rotating a sleeve to follow up cutting to reach the hole forming depth; 7) the down-the-hole hammer is lifted out of the ground and the casing pipe is kept in the stratum; 8) the reinforcement cage is inserted into the inner wall of the sleeve; 9) pumping concrete to the inner wall of the sleeve; 10) and rotationally pulling out the sleeve, and forming a pile and maintaining. The construction method of the rock-entering cast-in-place pile has the characteristics of convenience in construction, full-course wall protection of the sleeve, strong penetrating power, stable construction quality and the like, effectively prevents the collapse or water inflow of the hole wall, improves the operation efficiency of rock-entering construction and cast-in-place pile formation of the long spiral drilling machine, effectively controls the hole-forming quality of a complex stratum, and reduces the waste of concrete.
Description
Technical Field
The invention relates to a construction method of a building pile foundation, in particular to a construction method of a rock-entering cast-in-place pile.
Background
In recent years, cast-in-situ bored piles are widely applied to construction projects such as high-rise buildings, railways, roads, bridges and the like, and various rock-entering piles can effectively improve the bearing capacity of the piles and prolong the service life of the buildings. The pile holes are often constructed under complex geological conditions such as an ovum, a gravel layer, a boulder layer, a hard rock layer and the like, and the conventional rotary drilling rig and the conventional long spiral drilling rig are difficult to deal with. Therefore, a construction method capable of solving rock drilling and digging and pouring pile forming needs to be developed and explored, so that efficient drilling and pouring pile forming can be completed under the geological conditions, mud is not needed in the construction process, pile forming quality is high, and the requirement of environmental protection is met.
Disclosure of Invention
The invention aims to provide a construction method of a rock-entering cast-in-place pile, which has convenient construction, full-course wall protection of a sleeve, strong penetrating power and stable construction quality, effectively prevents the collapse or water inflow of a hole wall, improves the operation efficiency of rock-entering construction and cast-in-place pile formation of a long spiral drilling machine, effectively controls the hole-forming quality of a complex stratum and reduces the waste of concrete.
In order to achieve the above purpose, the solution adopted by the invention is as follows:
a construction method of a rock-entering cast-in-place pile comprises the following steps:
1) preparation before construction
a) Cleaning a construction site, keeping a road surface smooth and ensuring the safety of a construction area; b) adjusting and determining the longitudinal direction and the transverse direction of a pile position by using a theodolite, and using the two directions as pile frame displacement references; c) the operation pile frame moves to the position near the drilling station;
2) pile frame and double-power-head drilling machine installation and debugging
a) Installing an upper power head of the double-power-head drilling machine on an inner guide rail of an upright post of a pile frame in place, properly connecting the upper power head with a hoisting mechanism of the pile frame through a steel wire rope, and operating the upper power head to lift to a certain height along the inner guide rail of the upright post; b) installing a lower power head of the double-power-head drilling machine on an outer guide rail of an upright post of a pile frame in place, properly connecting the lower power head with a hoisting mechanism of the pile frame through a steel wire rope, and operating the outer guide rail of the lower power head to lift and run; c) a long spiral drill rod penetrates through a cavity of the lower power head to be fixedly connected with the output end of the upper power head, a hoisting mechanism of the pile frame is started to enable the upper power head and the long spiral drill rod to reach a certain height, and a drilling tool is fixedly installed below the long spiral drill rod; driving the upper power head to operate, and checking the running state of the long spiral drill rod and the drilling tool connected with the long spiral drill rod; d) starting a hoisting mechanism of the pile frame to continuously lift the upper power head, a long spiral drill rod and a drilling tool which are connected with the upper power head, hoisting a sleeve to the lower power head of the double-power-head drilling machine, and properly connecting the sleeve with the output end of the lower power head; starting a hoisting mechanism of the pile frame to lift the lower power head and the sleeve pipe thereof away from the ground, driving the lower power head to operate, and checking the running state of the sleeve pipe;
3) forward drilling and reverse casing following cutting for long spiral drilling tool
a) Driving the upper power head to rotate forwards, operating a hoisting mechanism of the pile frame to discharge a steel wire rope to enable the steel wire rope to move downwards along a guide rail in an upright post of the pile frame, and drilling the long spiral drill rod and a drilling tool thereof into a soil layer to cut in a forward rotating mode; b) when the upper power head rotates forwards, the lower power head is started to rotate reversely, a hoisting mechanism of the pile frame is operated to discharge a steel wire rope to enable the steel wire rope to go downwards along an outer guide rail of the upright post of the pile frame, the sleeve pipe performs follow-up cutting with the long spiral drill rod and the drilling tool thereof in reverse rotation, a smooth and compact hole wall is formed, and a spiral slag discharge channel is formed between the sleeve pipe and the long spiral drill rod and the drilling tool thereof; c) when the long spiral drill rod, the drilling tool and the casing thereof complete the drilling of the soil layer to the rock stratum, the downward drilling is stopped;
4) lifting the long spiral drill rod and replacing the drilling tool with a down-the-hole hammer
A hoisting mechanism of the pile frame is operated to lift the upper power head, the long spiral drill rod and the drilling tool which are connected with the upper power head, the drilling tool which is positioned below the long spiral drill rod is dismounted when the power head is completely exposed out of the sleeve, the down-the-hole hammer is hoisted to the position below the long spiral drill rod and is properly installed with the long spiral drill rod, and the down-the-hole hammer is debugged to reach a working state;
5) down-the-hole hammer impact rock-entering and casing pipe reverse follow-up cutting
a) A hoisting mechanism for operating the pile frame enables the upper power head, the long spiral drill rod connected with the upper power head and the down-the-hole hammer to go down along a guide rail in the upright post of the pile frame and to pass through the lower power head again, the down-the-hole hammer continuously enters an external air pumping system on the inner wall of the sleeve pipe, high-pressure air is injected into the down-the-hole hammer through a rotary joint at the upper part of the upper power head and the long spiral drill rod, rock is efficiently broken through impact when the down-the-hole hammer rotates along with the long spiral drill rod in a forward direction, and broken stones at the bottom of a hole are discharged out of the hole along with the rotation of the long spiral drill rod; b) the sleeve pipe is driven by the lower power head to rotate reversely and continue to follow the drilled stratum;
6) the down-the-hole hammer impacts into rock and the sleeve pipe is reversely cut to reach the depth of formed hole
Operating the long auger stem and the down-the-hole hammer thereof to impact and break rock on the inner wall of the casing pipe to reach the required hole forming depth; the sleeve pipe is simultaneously reversed and followed to reach the hole forming depth; the crushed stone at the bottom of the hole is discharged out of the hole along with the rotation of the long spiral drill rod;
7) the down-the-hole hammer is lifted out of the ground and the casing pipe is kept in the stratum
a) A hoisting mechanism of the long auger stem and a down-the-hole hammer operating pile frame thereof lifts the power head and the long auger stem and the down-the-hole hammer connected with the power head; b) after the output end of the lower power head and the sleeve are loosened, a hoisting mechanism for operating the pile frame lifts the lower power head up to a certain height along an outer guide rail of the upright post of the pile frame; c) the travelling mechanism of the pile frame is controlled to move backwards to leave the finished hole-forming pile position;
8) inner wall of steel reinforcement cage insertion sleeve
Placing the processed reinforcement cage into a finished hole along the inner wall of the sleeve by using a crane, and keeping the reinforcement cage vertically centered;
9) pumping concrete to the inner wall of casing
Starting a concrete pumping system, and pouring concrete to the inner wall of the casing;
10) casing pipe rotary pulling out, pile forming maintenance
a) The traveling mechanism of the pile frame is controlled to move to the pile position, the lower power head is controlled to travel downwards to the position of the sleeve along the outer guide rail of the upright post of the pile frame, and the output end of the lower power head is properly connected with the sleeve; b) starting the lower power head to drive the sleeve to rotate, lifting the lower power head at the same time, rotating the sleeve while lifting the sleeve, and pulling the sleeve out to form a hole; c) and curing the concrete in the formed hole, and curing according to requirements to form the rock-entering cast-in-place pile.
In the step 3), the external gas injection system injects high-pressure air into the long auger stem and the drilling tool thereof through the rotary joint arranged at the upper part of the output shaft penetrating out of the upper power head, so that the dregs at the bottom of the hole can be conveniently discharged outwards.
Drawings
FIG. 1 is a schematic structural view of a rock-entering cast-in-place pile system according to the present invention;
FIG. 2 is a left side view of FIG. 1;
fig. 3 is a flow chart of the construction method of the rock-entering cast-in-place pile.
Detailed Description
Referring to fig. 1 to 3, the construction method provided by the present invention includes the following steps:
step 1: preparation before construction
a) Cleaning a construction site, keeping a road surface smooth and ensuring the safety of a construction area; b) the theodolite is used for adjusting and determining the longitudinal direction and the transverse direction of the pile position to be used as the displacement reference of the pile frame 5; c) the handling pile 5 is displaced away to the vicinity of the drilling station.
Step 2: pile frame and double-power-head drilling machine installation and debugging
a) Installing an upper power head 41 of the double-power-head drilling machine 4 on a column inner guide rail 51 of the pile frame 5 in place, properly connecting the upper power head 41 with a hoisting mechanism of the pile frame 5 through a steel wire rope, and operating the upper power head 41 to lift to a certain height along the column inner guide rail 51; b) installing the lower power head 42 of the double-power-head drilling machine 4 on the upright post outer guide rail 52 of the pile frame 5 in place, properly connecting the lower power head with a hoisting mechanism of the pile frame 5 through a steel wire rope, and operating the outer guide rail 52 of the lower power head 42 to lift; c) a long auger stem 411 passes through a cavity of a lower power head 42 and is fixedly connected with the output end of an upper power head 41, a hoisting mechanism of a pile frame 5 is started to enable the upper power head 41 and the long auger stem 411 to reach a certain height, and a drilling tool 412 is fixedly installed below the long auger stem 411; driving the upper power head 41 to operate, and checking the running state of the long auger stem 411 and the drilling tool 412 connected with the long auger stem; d) starting the hoisting mechanism of the pile frame 5 to continuously lift the upper power head 41, the long auger stem 411 and the drilling tool 412 which are connected with the upper power head 41, hoisting the sleeve 421 to the lower power head 42 of the double-power-head drilling machine 4, and properly connecting the sleeve 421 with the output end of the lower power head 42; and starting a hoisting mechanism of the pile frame 5 to lift the lower power head 42 and the sleeve 421 thereof away from the ground, driving the lower power head 42 to operate, and checking the operating state of the sleeve 421.
And step 3: forward drilling and reverse casing following cutting for long spiral drilling tool
a) Driving the upper power head 41 to rotate forward, operating the hoisting mechanism of the pile frame 5 to release the steel wire rope to enable the steel wire rope to move down along the column inner guide rail 51 of the pile frame 5, and rotating the long auger stem 411 and the drilling tool 412 thereof forward to drill into the soil layer for cutting; b) when the upper power head 41 rotates forward, the lower power head 42 is started to rotate reversely, a hoisting mechanism of the pile frame 5 is operated to discharge a steel wire rope to enable the steel wire rope to descend along an outer upright guide rail 52 of the pile frame 5, the sleeve 421 performs follow-up cutting with the long spiral drill rod 411 and the drilling tool 412 rotating reversely to form a smooth and compact hole wall, and a spiral slag discharge channel is formed between the sleeve and the long spiral drill rod 411 and the drilling tool 412; c) when the long auger stem 411, the drilling tool 412 thereof and the casing 421 complete the soil layer drilling and reach the rock layer, the downward drilling is stopped. The external gas injection system injects high-pressure air into the long auger stem 411 and the drilling tool 412 thereof through a swivel joint mounted on the upper portion of the output shaft penetrating out of the upper power head 42, so that the hole bottom muck is conveniently discharged outwards.
And 4, step 4: lifting the long spiral drill rod and replacing the drilling tool with a down-the-hole hammer
The hoisting mechanism of the pile frame 5 is operated to lift the upper power head 41 and the long auger stem 411 and the drilling tool 412 connected with the upper power head, when the upper power head is completely exposed out of the casing 421, the drilling tool 412 below the long auger stem 411 is detached, the down-the-hole hammer 413 is hoisted to the position below the long auger stem 411 and is properly installed with the long auger stem 411, and the drilling tool is debugged to reach the working state.
5) Down-the-hole hammer impact rock-entering and casing pipe reverse follow-up cutting
a) Operating a hoisting mechanism of the pile frame 5 to enable the upper power head 41, the long auger stem 411 connected with the upper power head 41 and the down-the-hole hammer 413 of the long auger stem to descend along an inner guide rail 51 of a vertical column of the pile frame 5 and to penetrate through the lower power head 42 again, continuing to descend into an external air pumping system on the inner wall of the sleeve 421, injecting high-pressure air into the down-the-hole hammer 413 through a rotary joint at the upper part of the upper power head 41 and the long auger stem 411, efficiently impacting and breaking rock when the down-the-hole hammer 413 rotates along with the long auger stem 411, and discharging broken stones at the bottom of a hole outside the hole along with the long auger stem 411; b) the casing 421 is driven by the lower power head 42 to reverse direction and continue to follow the drilled formation.
Step 6: the down-the-hole hammer impacts into rock and the sleeve pipe is reversely cut to reach the depth of formed hole
Operating the long auger stem 411 and the down-the-hole hammer 413 thereof to impact and break rock on the inner wall of the sleeve 421 to reach the required hole forming depth; the sleeve 421 is simultaneously reversed and followed to reach the hole-forming depth; the crushed stone at the bottom of the hole is rotated to the outside of the hole along with the long auger stem 411 and is discharged.
Step 7, lifting the down-the-hole hammer out of the ground and casing to keep in the stratum
a) The long auger stem 411 and the down-the-hole hammer 413 thereof operate a hoisting mechanism of the pile frame 5 to lift the upper power head 41 and the long auger stem 411 and the down-the-hole hammer 413 connected with the upper power head; b) after the output end of the lower power head 42 is loosened from the sleeve 421, a hoisting mechanism of the pile frame 5 is operated to lift the lower power head 42 up to a certain height along the outer column guide rail 52 of the pile frame 5; c) the running gear of the pile frame 5 is operated to move backwards to leave the finished hole-forming pile position.
And 8: inner wall of steel reinforcement cage insertion sleeve
The finished reinforcement cage 66 is placed into the bore along the inner wall of the sleeve 421 using a crane, taking care to keep it vertically centered.
And step 9: pumping concrete to the inner wall of casing
The concrete pumping system is started and concrete is poured into the inner wall of the casing 421.
Step 10: casing pipe rotary pulling out, pile forming maintenance
a) Operating the travelling mechanism of the pile frame 5 to move to the pile position, operating the lower power head 42 to descend to the sleeve 421 along the outer column guide rail 52 of the pile frame 5, and properly connecting the output end of the lower power head with the sleeve 421; b) starting the lower power head 42 to drive the sleeve 21 to rotate, lifting the lower power head 42 at the same time, and pulling the sleeve 421 out to form a hole while rotating and lifting; c) and curing the concrete in the formed hole, and curing according to requirements to form the rock-entering cast-in-place pile.
The construction method of the rock-entering cast-in-place pile has the characteristics of convenience in construction, full-course wall protection of the sleeve, strong penetrating power, stable construction quality and the like, prevents the collapse or water inflow of the hole wall, improves the operation efficiency of the long-spiral drilling machine in-rock construction and the cast-in-place pile formation, effectively controls the hole forming quality of a complex stratum, and reduces the waste of concrete.
Claims (2)
1. A construction method of a rock-entering cast-in-place pile comprises the following steps:
1) preparation before construction
a) Cleaning a construction site, keeping a road surface smooth and ensuring the safety of a construction area;
b) the theodolite is used for adjusting and determining the longitudinal direction and the transverse direction of the pile position to be used as the displacement reference of the pile frame (5);
c) the operation pile frame (5) is moved to the position near the drilling station;
2) pile frame and double-power-head drilling machine installation and debugging
a) An upper power head (41) of the double-power-head drilling machine (4) is arranged on a column inner guide rail (51) of a pile frame (5) in place, and is properly connected with a hoisting mechanism of the pile frame (5) through a steel wire rope, and the upper power head (41) is operated to be lifted to a certain height along the column inner guide rail (51);
b) a lower power head (42) of the double-power-head drilling machine (4) is arranged on an upright post outer guide rail (52) of a pile frame (5) in place, and is properly connected with a hoisting mechanism of the pile frame (5) through a steel wire rope, and the outer guide rail (52) of the lower power head (42) is operated to lift;
c) a long auger stem (411) penetrates through a cavity of a lower power head (42) to be fixedly connected with the output end of an upper power head (41), a hoisting mechanism of a pile frame (5) is started to enable the upper power head (41) and the long auger stem (411) to reach a certain height, and a drilling tool (412) is fixedly installed below the long auger stem (411); driving the upper power head (41) to operate, and checking the running state of the long auger stem (411) and a drilling tool (412) connected with the long auger stem;
d) starting a hoisting mechanism of the pile frame (5) to continuously lift the upper power head (41) and a long auger stem (411) and a drilling tool (412) connected with the upper power head, hoisting the sleeve (421) to the lower power head (42) of the double-power-head drilling machine (4) and properly connecting the lower power head (42) with the output end of the lower power head (42); starting a hoisting mechanism of the pile frame (5) to lift the lower power head (42) and the sleeve (421) thereof away from the ground, driving the lower power head (42) to operate, and checking the running state of the sleeve (421);
3) forward drilling and reverse casing following cutting for long spiral drilling tool
a) The upper power head (41) is driven to rotate forwards, a hoisting mechanism of the pile frame (5) is controlled to release a steel wire rope to enable the steel wire rope to move downwards along an inner upright guide rail (51) of the pile frame (5), and the long spiral drill rod (411) and a drilling tool (412) thereof rotate forwards to drill into a soil layer for cutting;
b) when the upper power head (41) rotates forwards, the lower power head (42) is started to rotate reversely, a hoisting mechanism of the pile frame (5) is operated to release a steel wire rope to enable the steel wire rope to move downwards along an outer upright guide rail (52) of the pile frame (5), a sleeve (421) performs follow-up cutting in a mode of rotating reversely with the long spiral drill rod (411) and the drilling tool (412) thereof to form a smooth and compact hole wall, and a spiral slag discharge channel is formed between the sleeve and the long spiral drill rod (411) and the drilling tool (412) thereof;
c) when the long spiral drill rod (411), the drilling tool (412) and the casing (421) thereof finish the soil layer drilling to the rock stratum, stopping drilling downwards;
4) lifting the long spiral drill rod and replacing the drilling tool with a down-the-hole hammer
A hoisting mechanism of the pile frame (5) is operated to lift the upper power head (41) and the long spiral drill pipe (411) and the drilling tool (412) connected with the upper power head, the drilling tool (412) positioned below the long spiral drill pipe (411) is detached when the whole power head is exposed out of the casing pipe (421), the down-the-hole hammer (413) is hoisted to the position below the long spiral drill pipe (411) and is properly installed with the long spiral drill pipe, and the down-the-hole hammer is debugged to reach a working state;
5) down-the-hole hammer impact rock-entering and casing pipe reverse follow-up cutting
a) Operating a hoisting mechanism of the pile frame (5) to enable an upper power head (41), a long spiral drill rod (411) connected with the upper power head and a down-the-hole hammer (413) of the upper power head to descend along an inner upright guide rail (51) of the pile frame (5) and to pass through a lower power head (42) again, continuing to descend into an external air pumping system on the inner wall of a sleeve (421), injecting high-pressure air into the down-the-hole hammer (413) through a rotary joint at the upper part of the upper power head (41) and the long spiral drill rod (411), efficiently impacting and breaking rock when the down-the-hole hammer (413) rotates along with the long spiral drill rod (411) in the forward direction, and discharging broken stone at the bottom of a hole outside the rotary hole along with the long spiral drill rod (411);
b) the sleeve (421) is driven by the lower power head (42) to reversely rotate and continue to follow the drilled stratum;
6) the down-the-hole hammer impacts into rock and the sleeve pipe is reversely cut to reach the depth of formed hole
Operating the long auger stem (411) and the down-the-hole hammer (413) thereof to impact and break rock on the inner wall of the casing (421) to reach the required hole forming depth; the sleeve (421) rotates reversely to follow up to the depth of the formed hole; the crushed stone at the bottom of the hole is rotated to the outside of the hole along with the long auger stem (411) and is discharged;
7) the down-the-hole hammer is lifted out of the ground and the casing pipe is kept in the stratum
a) A long auger stem (411) and a down-the-hole hammer (413) thereof operate a hoisting mechanism of the pile frame (5) to lift the power head (41) and the long auger stem (411) and the down-the-hole hammer (413) connected with the power head;
b) after the output end of the lower power head (42) is loosened from the sleeve (421), a hoisting mechanism of the pile frame (5) is operated to lift the lower power head (42) to ascend for a certain height along an upright post outer guide rail (52) of the pile frame (5);
c) the travelling mechanism of the pile frame (5) is operated to move backwards to leave the finished hole-forming pile position;
8) inner wall of steel reinforcement cage insertion sleeve
Placing the processed reinforcement cage (66) into the forming hole along the inner wall of the sleeve (421) by using a crane, and keeping the reinforcement cage vertically centered;
9) pumping concrete to the inner wall of casing
Starting a concrete pumping system, and pouring concrete to the inner wall of the casing (421);
10) casing pipe rotary pulling out, pile forming maintenance
a) Operating a travelling mechanism of the pile frame (5) to move to a pile position, operating a lower power head (42) to descend to a sleeve (421) along an outer upright guide rail (52) of the pile frame (5), and properly connecting the output end of the lower power head with the sleeve (421);
b) starting the lower power head (42) to drive the sleeve (421) to rotate, lifting the lower power head (42) at the same time, rotating the sleeve (421) while lifting, and pulling out the sleeve to form a hole;
c) and curing the concrete in the formed hole, and curing according to requirements to form the rock-entering cast-in-place pile.
2. The construction method according to claim 1, wherein in step 3), an external gas injection system injects high-pressure air into the long auger stem (411) and the drilling tool (412) thereof through a rotary joint arranged at the upper part of an output shaft penetrating out of the upper power head (42) so as to facilitate the discharge of the dregs at the bottom of the hole.
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| CN202111347623.2A CN113897957A (en) | 2021-11-15 | 2021-11-15 | Construction method of rock-entering cast-in-place pile |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000291002A (en) * | 1999-04-12 | 2000-10-17 | Tenox Corp | Construction method for composite pile, steel pipe pile used for the method, and composite pile |
| CN105003199A (en) * | 2015-05-28 | 2015-10-28 | 山东中瑞工程机械有限公司 | Large-diameter pile hole operation construction method and special clustered DTH hammer |
| CN106194030A (en) * | 2016-08-30 | 2016-12-07 | 昆明良工桩机制造有限公司 | A kind of double power head long spire rotation drill machine with casing and the method using its bored pile |
| CN109113566A (en) * | 2017-06-23 | 2019-01-01 | 刘淼 | The structure-improved and full-sleeve screw cast-in-place pile construction method of full-sleeve twist bit |
| CN110144886A (en) * | 2019-05-16 | 2019-08-20 | 深圳市工勘岩土集团有限公司 | Deep soft stratum long spire is with pipe, churning driven pore-creating filling pile construction method |
| CN111335306A (en) * | 2020-03-19 | 2020-06-26 | 中铁六局集团有限公司 | Rapid construction method for deep and thick hard rock section drilled pile |
-
2021
- 2021-11-15 CN CN202111347623.2A patent/CN113897957A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000291002A (en) * | 1999-04-12 | 2000-10-17 | Tenox Corp | Construction method for composite pile, steel pipe pile used for the method, and composite pile |
| CN105003199A (en) * | 2015-05-28 | 2015-10-28 | 山东中瑞工程机械有限公司 | Large-diameter pile hole operation construction method and special clustered DTH hammer |
| CN106194030A (en) * | 2016-08-30 | 2016-12-07 | 昆明良工桩机制造有限公司 | A kind of double power head long spire rotation drill machine with casing and the method using its bored pile |
| CN109113566A (en) * | 2017-06-23 | 2019-01-01 | 刘淼 | The structure-improved and full-sleeve screw cast-in-place pile construction method of full-sleeve twist bit |
| CN110144886A (en) * | 2019-05-16 | 2019-08-20 | 深圳市工勘岩土集团有限公司 | Deep soft stratum long spire is with pipe, churning driven pore-creating filling pile construction method |
| CN111335306A (en) * | 2020-03-19 | 2020-06-26 | 中铁六局集团有限公司 | Rapid construction method for deep and thick hard rock section drilled pile |
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Application publication date: 20220107 |