CN109208587A - The construction method and device of caisson and application - Google Patents
The construction method and device of caisson and application Download PDFInfo
- Publication number
- CN109208587A CN109208587A CN201710520053.XA CN201710520053A CN109208587A CN 109208587 A CN109208587 A CN 109208587A CN 201710520053 A CN201710520053 A CN 201710520053A CN 109208587 A CN109208587 A CN 109208587A
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- pipe
- retaining wall
- diameter
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- slurry
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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
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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
Abstract
The present invention provides eight kinds of construction methods of the caisson for forming the permanent retaining wall of monoblock type in conjunction with prefabricated pipe with slurry or prefabricated pipe or slurry and device and applications, the excavation pile construction that can solve the problems, such as the permanent retaining wall of existing non-integral type or the interim retaining wall of monoblock type achievees the purpose that safe, economic, high-quality, efficient construction caisson.
Description
Technical field
The present invention relates to the construction method of engineering pile and device and applications, belong to technical field of construction.
Background technique
Excavation pile construction is usually that a section cast-in-place concrete retaining wall is done in every one meter or so of digging, and retaining wall is merogenesis, does not take out,
Belong to the permanent retaining wall of non-integral type, the caisson of this retaining wall is easy to happen leak, retaining wall falls off, and even collapse hole causes personnel to hurt
The problems such as dying.
The permanent retaining wall of non-integral type relative to caisson, the steel sleeve of immersed tube class stake belong to the interim retaining wall of monoblock type.
Application No. is the methods that 97103220.3 " pile making method of tube immersing and drilling bored concrete pile " patent provides, it is intended to will be whole
The interim retaining wall of body formula is used for caisson, solves the problems, such as that the permanent retaining wall of non-integral type exists, but bring steel sleeve and be difficult to sink, pull out
The problems such as.
Due to the above problems, especially human safety issues, the caisson for causing sheet to have good competitiveness are existing
It almost withdraws from the market.
Summary of the invention
To solve the above problems, the present invention provides the construction method of the caisson of the permanent retaining wall of monoblock type and device and applications.
Device, including three kinds of casings, two kinds of backing plates, a kind of drilling tool are introduced first.
Casing one can be steel, referring to attached drawing 1, constitute as follows:
1. there is ring 12 under pipe 11, there is quantity to be generally no less than 2 intrusion pipes 13 outside；
2. 13 internal diameter of intrusion pipe is typically no less than 10mm；
3. ring 12 is the annulus for having lug 14, concentric with pipe 11, internal diameter is not more than 11 internal diameter of pipe, and outer diameter is not less than 11 outer diameter of pipe；
4. lug 14 and intrusion pipe 13 align, outer profile is not less than intrusion pipe 13, has and intrusion pipe 13 is concentric, circular hole 15 of uniform internal diameter；
5. pipe 11, ring 12, intrusion pipe 13 mutually weld.
Casing two can be steel, referring to attached drawing 2, constitute as follows:
1. outer tube 21, inner tube 24 are with one heart, between accompany quantity and be generally no less than 2 intrusion pipes 23, under have ring 22；
2. 23 internal diameter of intrusion pipe is typically no less than 10mm；
3. ring 22 and outer tube 21, inner tube 24 are concentric, internal diameter is not more than 24 internal diameter of inner tube, and outer diameter is not less than 21 outer diameter of outer tube, have with
Intrusion pipe 23 with one heart, the circular hole 25 of uniform internal diameter；
4. outer tube 21, inner tube 24 and intrusion pipe 23 weld, outer tube 21, inner tube 24, intrusion pipe 23 and ring 22 are welded.
Casing three, can be it is steel or concrete or plastics or combined material, referring to attached drawing 3, constitute as follows:
1. there is ring 32 under pipe 31, there is quantity to be generally no less than 2 intrusion pipes 33 outside；
2. 33 internal diameter of intrusion pipe is typically no less than 10mm；
3. ring 32 is the annulus for having lug 34, concentric with pipe 31, internal diameter is not more than 31 internal diameter of pipe, and outer diameter is not less than 31 outer diameter of pipe；
4. lug 34 and intrusion pipe 33 align, outer profile is not less than intrusion pipe 33；
5. arc plate 35 and intrusion pipe 33 are concentric, internal diameter is greater than 33 outer diameter of intrusion pipe；Arc plate 35 is welded or is sticked on 34 outer of lug；
6. the lower mouth of intrusion pipe 33 is higher than the lower mouth of pipe 31, suitable for reading lower than arc plate 35；
7. pipe 31 welds or sticks together with ring 32, intrusion pipe 33.
Intrusion pipe 13,23,33 can also use plastic tube, and ring 12,22,32 may be alternatively configured wide at the top and narrow at the bottom.
Backing plate one is the matched attachment of casing one, referring to attached drawing 1,5, is constituted as follows:
1. the sheet metal 51 of thickness about 1~2mm is the circular ring shape for having lug 53, shape is with the ring 12 of casing one, and internal diameter is less than ring
12 internal diameters, outer profile are greater than 12 outer profile of ring；
2. 52 thickness about 5~10mm of circular steel plate is aligned with intrusion pipe 13, diameter is greater than 13 internal diameter of intrusion pipe, is welded under sheet metal 51.
Backing plate two is the matched attachment of casing two, referring to attached drawing 2,6, is constituted as follows:
1. circular ring shape sheet metal 61 thickness about 1~2mm, internal diameter is less than 22 internal diameter of ring of casing two, and outer diameter is greater than 22 outer diameter of ring；
2. 62 thickness about 5~20mm of circular steel plate is aligned with intrusion pipe 23, diameter is greater than 23 internal diameter of intrusion pipe, is welded under sheet metal 61.
Annular drilling tool, for Grouting Pipe, circularize the long spire drilling tool in hole, referring to attached drawing 4, constitute as follows:
1. elongated in or beyond under shed steel pipe 41 be welded with internal helical blades 42 or external spiral blade 43；
2. spiral 44 side of Grouting Pipe and steel pipe 41 weld, above and below and the weldering of internal helical blades 42 or external spiral blade 43 are welded.
The construction method of the caisson of the permanent retaining wall of monoblock type is described below.
Method one does the construction method of the caisson of permanent retaining wall for pipe sinking pressure grouting slurry, and steps are as follows:
1. can be as needed, loosen the soil pilot hole or slip casting pilot hole be carried out on stake position, or are carried out near retaining wall position or retaining wall small
Diameter loosens the soil pilot hole or slip casting pilot hole；
2. casing one or the contraposition of casing two are pressed on the backing plate one or backing plate two of retaining wall position；
3. after immersed tube to predetermined depth, by intrusion pipe 13 or intrusion pipe 23, slurry is pumped when pulling out casing one or casing two, directly
To predetermined altitude；
4. prefabricated pipe can be inserted into the slurry as needed；
5. slurry hardens to form retaining wall after, manually or mechanically cut the earth, including base expanding and base expanding；
6. manually or mechanically clearing up retaining wall inner face, bottom hole；
7. steel reinforcement cage can be put as needed, concrete perfusion terminates.
It is the circular ring shape for having lug with the retaining wall that casing one is formed.
Pilot hole of loosening the soil is to be rotated forward to creep into long screw auger, and reversion is exited afterwards in place, and soil is returned when moving back.
Slip casting pilot hole is with long screw auger into back, which mentions, in place bores marginal not slurry, can fill always, can also only infuse lower section
Slurry, upper section loosen the soil pilot hole.
Prefabricated pipe can be steel pipe, pipe of concrete, including steel reinforcement cage, be also possible to the pipe of other materials, such as plastic tube.
When prefabricated pipe is steel pipe, concrete filled steel tube pile body can be formed, steel reinforcement cage can not be put；When for pipe of concrete, steel reinforcement cage
It can be placed in concrete tube wall.
The diameter of pilot hole on stake position, generally lies on the same order of magnitude with pile body diameter.
The minor diameter, be for pile body diameter, it is more much smaller than pile body diameter, such as it is three~five times small.
Method two does the construction method of the caisson of permanent retaining wall for long spire bit pressure grouting material, and steps are as follows:
1. back, which mentions, in place bores marginal not slurry, until predetermined altitude with cartridge type long spire drilling tool or annular drilling tool drilling；
2. step 4~7 of other same methods one.
Cartridge type long spire drilling tool is the elongated drilling tool for having triangle helical blade in or beyond existing under shed steel pipe.
Method three sinks prefabricated pipe for loosen the soil pilot hole or slip casting pilot hole and does the dug pile construction method of permanent retaining wall, and steps are as follows:
1. carrying out loosen the soil pilot hole or lower section slip casting pilot hole on stake position, or minor diameter is carried out near retaining wall position or retaining wall and is loosened the soil
Pilot hole or lower section slip casting pilot hole；
2. heavy diameter is not less than the prefabricated pipe in aperture, or diameter is less than mouth under the prefabricated pipe in aperture and sinks to the soil below bottom hole
In or hole lower section injection certain altitude slurry, by diameter be less than aperture prefabricated pipe under mouth sink in slurry；
3. the outer slip casting of pipe can be carried out as needed；
4. manually or mechanically cutting the earth, including base expanding and base expanding after slurry (if any) hardening forms retaining wall；
5. manually or mechanically clearing up retaining wall inner face, bottom hole；
6. steel reinforcement cage can be put as needed, concrete perfusion terminates.
Method four does the dug pile construction method of permanent retaining wall for slip casting sinking sleeve three, and steps are as follows:
1. minor diameter can be carried out near retaining wall position or retaining wall as needed to loosen the soil pilot hole；
2. slip casting or casing three manage outer disposable slip casting after sinking to position outside pipe in sinking sleeve three；
3. slurry hardens to form retaining wall after, manually or mechanically cut the earth, including base expanding and base expanding；
4. manually or mechanically clearing up retaining wall inner face, bottom hole；
5. steel reinforcement cage can be put as needed, concrete perfusion terminates.
Method five, for the middle dug pile construction method dug heavy prefabricated pipe and do permanent retaining wall, steps are as follows:
1. pick takes soil, prefabricated pipe follow-up in；
2. manually or mechanically base expanding and base expanding, cleaning retaining wall inner face and bottom hole can be carried out as needed；
3. steel reinforcement cage can be put as needed, concrete perfusion terminates.
It can do as needed and take soil in advance, or even advanced expanding take soil.
Method six does the dug pile construction method of permanent retaining wall for the middle heavy prefabricated pipe of pick slip casting, and steps are as follows:
Pick manages outer disposable slip casting after taking soil, prefabricated pipe follow-up, while the outer slip casting of pipe or prefabricated pipe to sink to position in 1.；
2. slurry hardens to form retaining wall after, manually or mechanically base expanding and base expanding, cleaning retaining wall inner face and bottom hole can be carried out as needed；
3. steel reinforcement cage can be put as needed, concrete perfusion terminates.
Method seven does the dug pile construction method of permanent retaining wall for the heavy prefabricated pipe of mud off pore-forming, and steps are as follows:
1. mud off pore-forming；
2. heavy diameter is not less than the prefabricated pipe in aperture, or diameter is less than mouth under the prefabricated pipe in aperture and sinks to the soil below bottom hole
In or hole lower section injection certain altitude slurry, by diameter be less than aperture prefabricated pipe under mouth sink in slurry；
3. the outer slip casting of pipe can be carried out as needed；
After 4. slurry (if any) hardening forms retaining wall, mud in discharge pipe；
5. manually or mechanically base expanding and base expanding, cleaning retaining wall and bottom hole can be carried out as needed；
6. steel reinforcement cage can be put as needed, concrete perfusion terminates.
Method eight does the dug pile construction method of permanent retaining wall for the heavy prefabricated pipe of open-hole, and steps are as follows:
1. open-hole pore-forming；
2. heavy diameter is not less than the prefabricated pipe in aperture, or diameter is less than mouth under the prefabricated pipe in aperture and sinks to the soil below bottom hole
In or hole lower section injection certain altitude slurry, by diameter be less than aperture prefabricated pipe under mouth sink in slurry；
3. the outer slip casting of pipe can be carried out as needed；
4. slurry (if any) hardening form retaining wall after, can carry out as needed manually or mechanically base expanding and base expanding, cleaning retaining wall and
Bottom hole；
5. steel reinforcement cage can be put as needed, concrete perfusion terminates.
The prefabricated pipe that method three, six~eight uses can be casing three, can also be the existing prefabricated pipe with or without Grouting Pipe.
Above-mentioned immersed tube can with pressure, hammer, vibration or twist etc. modes complete.
One basic premise of these methods is that base expanding and base expanding part does not have water or water very little, to guarantee the safety of base expanding and base expanding construction.
Thinking according to the above method can derive a variety of other similar approach, and essence is identical as the present invention, at this
In invention protection scope.
Finally introduce the application of the above method or device.
Using one: the above method can be applied to the auxiliary construction of existing machinery pore-creating filling pile, with solve collapse hole, necking down,
Broken pile, folder mud and other issues.
Using two: pilot hole of loosening the soil or slip casting pilot hole can be used for the auxiliary construction of Squeezing Soil Pile or major diameter prefabricated pile, to solve
The soil compaction effect problem or major diameter prefabricated pile of Squeezing Soil Pile are difficult to pile sinking problem.
Using three: casing two can be used for pouring pipe pile of constructing.
Using four: annular drilling tool can be used for pouring pipe pile of constructing.
This four applications are it will be apparent that without repeating.
Detailed description of the invention
Attached drawing 1~3 is the composition schematic diagram of casing one~tri-, wherein (a) is profilograph, it (b) is drawing in side sectional elevation；
Attached drawing 4 is annular drilling tool composition schematic diagram, wherein (a) is profilograph, it (b) is drawing in side sectional elevation；
Attached drawing 5,6 is that backing plate one, two constitutes floor map.
Beneficial effect
The present invention provides the caissons for forming the permanent retaining wall of monoblock type in conjunction with prefabricated pipe with slurry or prefabricated pipe or slurry
Eight kinds of construction methods and device and application can solve the caisson of the permanent retaining wall of existing non-integral type or the interim retaining wall of monoblock type
The problem of construction, achievees the purpose that safe, economic, high-quality, efficient construction caisson.
Specific embodiment
Using the construction permanent retaining wall caisson of monoblock type of method two.
The top-down soil layer situation of Site Soil: the silty of the miscellaneous fill of about 1m thickness, the thick soft modeling-plastic state of about 5m is viscous
Soil, about 2m thickness is slightly close, in close state fine sand, middle sand, the completely decomposed mud stone of about 1m thickness, each strong, the middle weathered mudstone of about 2m thickness,
The following are micro- weathered mudstones；It is therein it is strong, in, micro- weathered mudstone it is waterproof.
Design uses the club-footed pile of concrete filled steel tube pile body.Outer diameter of steel pipes 1m, wall thickness 10mm, Q345 material, long 12m；Expand
Diameter 1.5m, lower diameter 3m, high 3m on major part, into micro- weathered mudstone 2m；Stake long 15m, ultimate bearing capacity 50000kN, use
C40 concrete.
Use annular drilling tool: 41 outer diameter 1.12m of steel pipe, wall thickness 20mm, long 20m；42 width 30mm of internal helical blades, external spiral
Blade 43 width 60mm, blade root thickness 10mm, screw pitch 500mm；44 outer diameter 20mm of Grouting Pipe, wall thickness 2.5mm.
Slurry is M2.5 cement mortar.
Construction procedure is as follows:
1. then annular drilling tool drilling depth 12m pumps slurry to ground in Ti Zuan into looping pit；
2. steel pipe is inserted into slurry；
3. cutting the earth after slurry hardening using churning driven, deep about 14.5m is dug；
4. manually the slurry in steel pipe is handled clean；
5. artificial base expanding and base expanding；
6. concrete perfusion.
The permanent retaining wall of monoblock type that construction stage, slurry and steel pipe are formed acts the effects of blocking water, is anti-collapse, it is ensured that construction peace
Entirely, economical, high-quality, efficient.Service stage, retaining wall steel pipe form concrete filled steel tube pile body with wherein concrete, and section is small, carries
Power is high, performance is good；The protective layer of the outer slurry of steel pipe or steel pipe.
The embodiment of another seven kinds of methods is similar with this, repeats no more.
Claims (3)
1. the device of the construction usage of caisson, including following casing one~tri-, backing plate one or two, annular drilling tool:
1.1 casings one can be steel, constitute as follows:
1.1.1 managing under (11) has ring (12), has quantity to be generally no less than 2 intrusion pipes (13) outside；
1.1.2 intrusion pipe (13) internal diameter is typically no less than 10mm；
1.1.3 ring (12) is the annulus for having lug (14), concentric with pipe (11), and for internal diameter no more than pipe (11) internal diameter, outer diameter is not small
In pipe (11) outer diameter；
1.1.4 lug (14) and intrusion pipe (13) align, and outer profile is not less than intrusion pipe (13), have with intrusion pipe (13) it is concentric,
The circular hole (15) of uniform internal diameter；
1.1.5 the mutually weldering of (11), ring (12), intrusion pipe (13) is managed；
1.2 casings two can be steel, constitute as follows:
1.2.1 outer tube (21), inner tube (24) with one heart, between accompany quantity and be generally no less than 2 intrusion pipes (23), under have ring (22)；
1.2.2 intrusion pipe (23) internal diameter is typically no less than 10mm；
1.2.3 ring (22) and outer tube (21), inner tube (24) are concentric, and internal diameter is not more than inner tube (24) internal diameter, and outer diameter is not less than outer tube
(21) outer diameter, has and intrusion pipe (23) is concentric, circular hole (25) of uniform internal diameter；
1.2.4 outer tube (21), inner tube (24) and intrusion pipe (23) are welded, and outer tube (21), inner tube (24), intrusion pipe (23) and ring (22) are welded；
1.3 casings three, can be it is steel or concrete or plastics or combined material, constitute as follows:
1.3.1 managing under (31) has ring (32), has quantity to be generally no less than 2 intrusion pipes (33) outside；
1.3.2 intrusion pipe (33) internal diameter is typically no less than 10mm；
1.3.3 ring (32) is the annulus for having lug (34), concentric with pipe (31), and for internal diameter no more than pipe (31) internal diameter, outer diameter is not small
In pipe (31) outer diameter；
1.3.4 lug (34) and intrusion pipe (33) align, and outer profile is not less than intrusion pipe (33)；
1.3.5 arc plate (35) and intrusion pipe (33) are concentric, and internal diameter is greater than intrusion pipe (33) outer diameter；Arc plate (35) welds or is sticked to lug
(34) on outer；
1.3.6 under intrusion pipe (33) mouth be higher than pipe (31) under mouth, lower than arc plate (35) it is suitable for reading；
1.3.7 pipe (31) welds or sticks together with ring (32), intrusion pipe (33)；
1.4 backing plates one are the matched attachment of casing one, constitute as follows:
1.4.1 the sheet metal (51) of thickness about 1~2mm is the circular ring shape for having lug (53), shape with casing one ring (12), it is interior
Diameter is less than ring (12) internal diameter, and outer profile is greater than ring (12) outer profile；
1.4.2 circular steel plate (52) thickness about 5~10mm is aligned with intrusion pipe (13), and diameter is greater than intrusion pipe (13) internal diameter, is welded in
Under sheet metal (51)；
1.5 backing plates two are the matched attachment of casing two, constitute as follows:
1.5.1 circular ring shape sheet metal (61) thickness about 1~2mm, internal diameter are less than ring (22) internal diameter of casing two, and outer diameter is greater than ring
(22) outer diameter；
1.5.2 circular steel plate (62) thickness about 5~20mm is aligned with intrusion pipe (23), and diameter is greater than intrusion pipe (23) internal diameter, is welded in
Under sheet metal (61)；
1.6 annular drilling tools, for Grouting Pipe, circularize the long spire drilling tool in hole, constitute as follows:
1.6.1 elongated in or beyond under shed steel pipe (41) to be welded with internal helical blades (42) or external spiral blade (43)；
1.6.2 spiral Grouting Pipe (44) side and steel pipe (41) are welded, above and below and internal helical blades (42) weldering or outer
Helical blade (43) weldering.
2. the construction method of caisson, be the construction method of the caisson of the permanent retaining wall of monoblock type, including following eight kinds of methods with
And its
Other similar methods that middle different step is composed:
2.1 methods one do the construction method of the caisson of permanent retaining wall for pipe sinking pressure grouting slurry, and steps are as follows:
2.1.1 can be as needed, loosen the soil pilot hole or slip casting pilot hole are carried out on stake position, or carry out near retaining wall position or retaining wall
Minor diameter loosens the soil pilot hole or slip casting pilot hole；
2.1.2 casing one or the contraposition of casing two are pressed on the backing plate one or backing plate two of retaining wall position；
2.1.3 it after immersed tube to predetermined depth, by intrusion pipe (13) or intrusion pipe (23), is pumped when pulling out casing one or casing two
Slurry, until predetermined altitude；
2.1.4 prefabricated pipe can be inserted into the slurry as needed；
2.1.5 slurry hardens to form retaining wall after, manually or mechanically cut the earth, including base expanding and base expanding；
2.1.6 retaining wall inner face, bottom hole are manually or mechanically cleared up；
2.1.7 steel reinforcement cage can be put as needed, and concrete perfusion terminates；
2.2 methods two do the construction method of the caisson of permanent retaining wall for long spire bit pressure grouting material, and steps are as follows:
2.2.1 with cartridge type long spire drilling tool or annular drilling tool drilling, back, which mentions, in place bores marginal not slurry, until predetermined altitude；
2.2.2 step 2.1.4~2.1.7 of other same methods one；
2.3 methods three sink prefabricated pipe for loosen the soil pilot hole or slip casting pilot hole and do the dug pile construction method of permanent retaining wall, and steps are as follows:
2.3.1 loosen the soil pilot hole or lower section slip casting pilot hole are carried out on stake position, or minor diameter is carried out near retaining wall position or retaining wall
Pilot hole of loosening the soil or lower section slip casting pilot hole；
2.3.2 the diameter that sinks is not less than the prefabricated pipe in aperture, or diameter is less than mouth under the prefabricated pipe in aperture and is sunk to below bottom hole
In soil or hole lower section injects the slurry of certain altitude, and diameter is less than to mouth under the prefabricated pipe in aperture and is sunk in slurry；
2.3.3 the outer slip casting of pipe can be carried out as needed；
2.3.4 it after slurry (if any) hardening forms retaining wall, manually or mechanically cuts the earth, including base expanding and base expanding；
2.3.5 retaining wall inner face, bottom hole are manually or mechanically cleared up；
2.3.6 steel reinforcement cage can be put as needed, and concrete perfusion terminates；
2.4 methods four do the dug pile construction method of permanent retaining wall for slip casting sinking sleeve three, and steps are as follows:
2.4.1 minor diameter can be carried out near retaining wall position or retaining wall as needed to loosen the soil pilot hole；
2.4.2 in sinking sleeve three, slip casting or casing three manage outer disposable slip casting after sinking to position outside pipe；
2.4.3 slurry hardens to form retaining wall after, manually or mechanically cut the earth, including base expanding and base expanding；
2.4.4 retaining wall inner face, bottom hole are manually or mechanically cleared up；
2.4.5 steel reinforcement cage can be put as needed, and concrete perfusion terminates；
2.5 methods five, for the middle dug pile construction method dug heavy prefabricated pipe and do permanent retaining wall, steps are as follows:
2.5.1 pick takes soil, prefabricated pipe follow-up in；
2.5.2 manually or mechanically base expanding and base expanding, cleaning retaining wall inner face and bottom hole can be carried out as needed；
2.5.3 steel reinforcement cage can be put as needed, and concrete perfusion terminates；
2.6 methods six do the dug pile construction method of permanent retaining wall for the middle heavy prefabricated pipe of pick slip casting, and steps are as follows:
2.6.1 pick manages outer disposable slip casting after taking soil, prefabricated pipe follow-up, while the outer slip casting of pipe or prefabricated pipe to sink to position in；
2.6.2 slurry hardens to form retaining wall after, manually or mechanically base expanding and base expanding, cleaning retaining wall inner face and bottom hole can be carried out as needed；
2.6.3 steel reinforcement cage can be put as needed, and concrete perfusion terminates；
2.7 methods seven do the dug pile construction method of permanent retaining wall for the heavy prefabricated pipe of mud off pore-forming, and steps are as follows:
2.7.1 mud off pore-forming；
2.7.2 the diameter that sinks is not less than the prefabricated pipe in aperture, or diameter is less than mouth under the prefabricated pipe in aperture and is sunk to below bottom hole
In soil or hole lower section injects the slurry of certain altitude, and diameter is less than to mouth under the prefabricated pipe in aperture and is sunk in slurry；
2.7.3 the outer slip casting of pipe can be carried out as needed；
2.7.4 after slurry (if any) hardening forms retaining wall, mud in discharge pipe；
2.7.5 manually or mechanically base expanding and base expanding, cleaning retaining wall and bottom hole can be carried out as needed；
2.7.6 steel reinforcement cage can be put as needed, and concrete perfusion terminates；
2.8 methods eight do the dug pile construction method of permanent retaining wall for the heavy prefabricated pipe of open-hole, and steps are as follows:
2.8.1 open-hole pore-forming；
2.8.2 the diameter that sinks is not less than the prefabricated pipe in aperture, or diameter is less than mouth under the prefabricated pipe in aperture and is sunk to below bottom hole
In soil or hole lower section injects the slurry of certain altitude, and diameter is less than to mouth under the prefabricated pipe in aperture and is sunk in slurry；
2.8.3 the outer slip casting of pipe can be carried out as needed；
2.8.4 after slurry (if any) hardening forms retaining wall, manually or mechanically base expanding and base expanding, cleaning retaining wall can be carried out as needed
And bottom hole；
2.8.5 steel reinforcement cage can be put as needed, and concrete perfusion terminates.
3. the application of claim one or two:
Casing two in 3.1 claims one can be used for pouring pipe pile of constructing；
Annular drilling tool in 3.2 claims one can be used for pouring pipe pile of constructing；
The construction method of 3.3 claims two can be applied to the auxiliary construction of existing machinery pore-creating filling pile；
In 3.4 claims two loosen the soil pilot hole or slip casting pilot hole can be used for the auxiliary construction of Squeezing Soil Pile or major diameter prefabricated pile.
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| CN112323792A (en) * | 2020-11-03 | 2021-02-05 | 北京顺义建筑企业集团公司 | Internal-driving hammer pile pipe for holding-pressing type hammering pressure-grouting pile |
| CN113802547A (en) * | 2021-10-29 | 2021-12-17 | 中国电建集团福建工程有限公司 | Construction method of bored pile based on inclined pile in wind power weathered soil layer |
| WO2022160379A1 (en) * | 2021-01-28 | 2022-08-04 | 江苏东合南岩土科技股份有限公司 | Large-diameter cast-in-situ thin-walled prestressed concrete steel pipe pile and construction method therefor |
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2017
- 2017-06-30 CN CN201710520053.XA patent/CN109208587A/en active Pending
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| CN111851479A (en) * | 2020-07-30 | 2020-10-30 | 陕西龙海新创基础工程有限公司 | Method for constructing immersed tube rammed cast-in-place pile in sand layer or gravel layer |
| CN112323792A (en) * | 2020-11-03 | 2021-02-05 | 北京顺义建筑企业集团公司 | Internal-driving hammer pile pipe for holding-pressing type hammering pressure-grouting pile |
| WO2022160379A1 (en) * | 2021-01-28 | 2022-08-04 | 江苏东合南岩土科技股份有限公司 | Large-diameter cast-in-situ thin-walled prestressed concrete steel pipe pile and construction method therefor |
| CN113802547A (en) * | 2021-10-29 | 2021-12-17 | 中国电建集团福建工程有限公司 | Construction method of bored pile based on inclined pile in wind power weathered soil layer |
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