CN105239575B - One kind drilling base expanding and base expanding grouting Static Pipe Pile Construction device and construction method - Google Patents

One kind drilling base expanding and base expanding grouting Static Pipe Pile Construction device and construction method Download PDF

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CN105239575B
CN105239575B CN201510752619.2A CN201510752619A CN105239575B CN 105239575 B CN105239575 B CN 105239575B CN 201510752619 A CN201510752619 A CN 201510752619A CN 105239575 B CN105239575 B CN 105239575B
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pile tube
drilling
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drilling equipment
base expanding
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李全民
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Abstract

One kind drilling base expanding and base expanding grouting Static Pipe Pile Construction device, including static pressure machine, the clamper for clamping pile tube is provided with static pressure machine, rotary crane and revolution truss are respectively equipped with the static pressure machine of clamper both sides, the rig that an output shaft is set down is provided with the top of revolution truss, the output shaft of rig is connected with the drilling equipment being vertically arranged, the drilling equipment includes a screw shell with helical blade, a drill core pipe is provided with screw shell, screw shell and drill core pipe are connected by latch, tangential air outlet is provided with the bottom side of screw shell, a telescopic drill rod mechanism is provided with the inside of drill core bottom of the tube.The present invention uses such scheme, and reasonable in design, construction technology is simple, low cost, steady quality, injects concrete soon after pile sinking is finished, and removes sinking apparatus fast, short time limit, efficiency high is equally applicable to the pile foundation constructions such as precast square pile, prefabricated bamboo joint pile, prefabricated polygonal pile.

Description

One kind drilling base expanding and base expanding grouting Static Pipe Pile Construction device and construction method
Technical field:
The present invention relates to one kind drilling base expanding and base expanding grouting Static Pipe Pile Construction device and construction method.
Background technology:
Existing building pile foundation (except harbour, harbour) construction pile tube mostly using diameter below 600, during tube pile construction such as When fruit runs into the stratum that soil density is big, geology is harder and is difficult to insertion, to avoid the damage of pile tube, it is general use bored concrete pile, Or using the larger diesel hammer stamping machine construction of environmental pollution, and because soil compaction effect can be to neighbouring structure foundation Secondary injury is carried out, has limited to the use scope of pile tube.A large amount of high-rise buildings are all very high due to the bearing capacity to stake, conventional Land stake machine pile foundation construction process cannot solve the construction of large-diameter tubular pile again, therefore the pile tube of major diameter cannot also be promoted on land Use, and have been used up the construction process of bored concrete pile of cast in situs.The drilling of live large area during filling pile construction, fetch earth, arrange Dirt, live banding steel cage, cast-in-place concrete, consume concrete and reinforcing bar is more, and recruitment is more, and labour intensity is big, construction effect Rate is low, high cost, long in time limit, and quality is unstable, and concrete strength only has the half of pile tube, and delivery receiving acceptance is also difficult to detect, holds Platform connection is also complicated, need broken pile head damage pile crown concrete structure, and concrete is also poor without prestressing force durability.Also have in recent years The first drilling of just exploitation, bottom reaming cast concrete in static are bored and take root in the engineering method of pile tube, due to being to want shadoof after drilling and use mud Slurry retaining wall, in shadoof and plant pile tube, bore diameter is slightly larger than pile tube diameter, and only tube stake deadweight is sunk to when planting stake, hole inwall Easily waved by pile tube itself (pile tube is several to more than ten tons from the deadweight of a great, root canal pile), collide cause inwall soil, rubble, The slump of ovum sand and cause to have poured into a mould concrete delamination with bottom enlarged and isolate, pile tube does not rub substantially with soil hole wall Power, easily receives vehicle and equipment self-weight and moving influence, pile tube to be squeezed and easily offset, can be produced when the earth's crust, formation displacement during construction Raw dislocation sliding, causes this position to produce sedimentation.And its each position long construction period, it is necessary to wait casting concrete 2 hours Pile tube can be just inserted after pre-hardening state consolidation, also sinking apparatus need to can be just removed after pile tube outer wall injection concrete consolidation, it is no Then pile tube understands off normal, and construction is complicated, quality is also unstable.The engineering method less adapts to the construction of precast square pile, there is very big office It is sex-limited.
The content of the invention:
The present invention in order to make up the deficiencies in the prior art, there is provided one kind drilling base expanding and base expanding grouting Static Pipe Pile Construction device and Construction method, its reasonable in design, construction technology is simple, and low cost, steady quality injects concrete after pile sinking is finished Hurry up, remove sinking apparatus soon, short time limit, efficiency high solves problems of the prior art.
The present invention is for the solution technical scheme that is used of above-mentioned technical problem:
One kind drilling base expanding and base expanding grouting Static Pipe Pile Construction device, including static pressure machine, are provided with static pressure machine for clamping pipe The clamper of stake, is respectively equipped with rotary crane and revolution truss, at the top of revolution truss on the static pressure machine of clamper both sides The rig that an output shaft is set down is provided with, the output shaft of rig is connected with the drilling equipment being vertically arranged, the drilling equipment Including a screw shell with helical blade, a drill core pipe is provided with screw shell, screw shell and drill core pipe are by inserting Pin is connected, and tangential air outlet is provided with the bottom side of screw shell, and a telescopic drilling rod is provided with the inside of drill core bottom of the tube Mechanism.
The drill rod mechanism is located at the oil cylinder that the piston rod on the inside of drill core bottom of the tube is set down, the piston of oil cylinder including one The one end of bar respectively with two connecting rods is hinged and connected, and the other end of two connecting rods is hinged and connected with the middle part of a drilling rod respectively, two drilling rods The inner be hinged and connected.
Chamfering steel ring is installed in pile tube bottom.
Some buckle anchor bars are installed in pile tube bottom.
One kind drilling base expanding and base expanding grouting Static Pipe Pile Construction method, comprises the following steps:
(1) static pressure machine is first moved to the pre- construction location of pile tube;
(2) the first pile tube is lifted by rotary crane and is moved to the gripper position of static pressure machine, by clamper by first Pile tube clamping is followed by near surface and is pressed into several meters, and then the rig for turning round truss is connected with the first drilling equipment, by revolution Truss drives the first drilling equipment movement the first pile tube of alignment, and the first drilling equipment is inserted in the first pile tube;
(3) cylinder action of the first drilling equipment is controlled, the piston rod of oil cylinder is extended, drives drilling rod to move by connecting rod Make, make the bore diameter of drilling rod than the smaller 2-3cm of pile tube diameter of required construction;
(4) startup rig drives the first drilling equipment to work and is drilled to underground, the helical blade row that hack is rotated Go out to surface collection apparatus, stop rig when the hole bored is to than slightly short 1 meter of the first pile tube length, and by rig and first Drilling equipment is separated, and the first pile tube is pressed into in drilling by static pressure machine;
(5) the second pile tube to the first pile tube over top is hung in by rotary crane and keeps 40cm gaps, in the second pile tube Installed between the first pile tube and isolate stool, then the rig for turning round truss is connected with the second drilling equipment, by turning round truss Drive the second drilling equipment to move the second pile tube of alignment, and the second drilling equipment is inserted in the second pile tube, in isolation stool side Face osseotomy site docking the second drilling equipment and the first drilling equipment, then remove isolation stool, by the second pile tube and the first pile tube Welding is mechanically connected;
(6) start rig the second drilling equipment of drive and the first drilling equipment works and drilled to underground simultaneously, hack The helical blade for being rotated is expelled in surface collection apparatus, when the hole bored is to than the second pile tube and the first pile tube length sum Stop rig at slightly short 1 meter, and rig is separated with the second drilling equipment, by static pressure machine by the second pile tube and the first pile tube pressure Enter in drilling;
(7) the n-th pile tube to the (n-1)th pile tube over top is hung in by rotary crane and keeps 40cm gaps, repeat step (5) (6) after, reaching design requirement, then the cylinder action of the first drilling equipment is controlled, makes the piston rod of oil cylinder continue to extend, passed through Connecting rod drives drilling rod to stretch out, and expands the drilling scope of drilling rod, starts rig, drives each drilling equipment to work simultaneously, makes the The diameter that the drilling rod of one drilling equipment bores enlarged cavity is 2 times of the first pile tube diameter, and depth is 2-3 times of pile tube diameter;
(8) compressed air is pressed into from drill core pipe, compressed air is tangentially blown into enlarged cavity, will be enlarged by chamber from tangential air outlet Interior hack is blown on the helical blade of rotation and is expelled in surface collection apparatus;
(9) cylinder action of the first drilling equipment is controlled, the piston rod of oil cylinder is shunk, drives drilling rod to shrink by connecting rod To drill core pipe, all drill core pipes and drilling equipment are separated from screw shell and ground is suggested by turning round truss;
(10) by compression pump by fast solidifying expansive concrete through being pumped into screw shell and full of whole enlarged cavity;
(11) all screw shells are proposed into ground from pile tube by turning round truss;
(12) being pressed by static pressure machine makes pile tube bottom enter the 1/2 of enlarged cavity depth, then withdraws static pressure machine, revolution and hangs Car and revolution truss;
(13) the hack re-injection in collection device is entered in pile tube, construction is completed.
Chamfering steel ring is installed in the first pile tube bottom.
Some buckle anchor bars are installed in the first pile tube bottom.
The present invention uses such scheme, and reasonable in design, construction technology is simple, and low cost, steady quality is complete in pile sinking Concrete is injected after finishing fast, it is fast to remove sinking apparatus, short time limit, efficiency high, be equally applicable to precast square pile, prefabricated bamboo joint pile, The pile foundation constructions such as prefabricated polygonal pile.
Brief description of the drawings:
Fig. 1 is structural representation of the invention.
Fig. 2 is the cross section structure diagram of drilling equipment of the present invention.
In figure, 1, static pressure machine, 2, pile tube, 3, clamper, 4, rotary crane, 5, revolution truss, 6, rig, 7, screw-casing Pipe, 8, helical blade, 9, drill core pipe, 10, latch, 11, tangential air outlet, 12, oil cylinder, 13, connecting rod, 14, drilling rod, 15, expand Chamber, 16, buckle anchor bar, 17, chamfering steel ring.
Specific embodiment:
For the technical characterstic for illustrating this programme can be understood, below by specific embodiment, and its accompanying drawing is combined, to this hair It is bright to be described in detail.
As shown in Figure 1-2, a kind of drilling base expanding and base expanding grouting Static Pipe Pile Construction device, including static pressure machine 1, on static pressure machine 1 The clamper 3 for clamping pile tube 2 is provided with, rotary crane 4 and revolution purlin are respectively equipped with the static pressure machine 1 of the both sides of clamper 3 Frame 5, the rig 6 that an output shaft is set down, the output shaft of rig 6 and the brill being vertically arranged are provided with the top of revolution truss 5 Aperture apparatus are connected, and the drilling equipment includes a screw shell 7 with helical blade 8, and a drill core is provided with screw shell 7 Pipe 9, screw shell 7 and drill core pipe 9 are connected by latch 10, and tangential air outlet 11 is provided with the bottom side of screw shell 7, The bottom inside of drill core pipe 9 is provided with a telescopic drill rod mechanism.
The drill rod mechanism includes the oil cylinder 12 that a piston rod for being located at the bottom inside of drill core pipe 9 is set down, oil cylinder 12 One end respectively with two connecting rods 13 of piston rod be hinged and connected, the middle part of the other end of two connecting rods 13 respectively with a drilling rod 14 is hinged It is connected, the inner of two drilling rods 14 is hinged and connected.
Chamfering steel ring 17 is installed in the bottom of pile tube 2, can when pile tube is pressed into from be oriented to and the closely knit increase side wall of soil compaction rub Wiping is acted on.
Some buckle anchor bars 16 are installed in the bottom of pile tube 2, to increase pile tube bottom and enlarged cavity inner concrete Fusion state of cure.
One kind drilling base expanding and base expanding grouting Static Pipe Pile Construction method, comprises the following steps:
(1) static pressure machine is first moved to the pre- construction location of pile tube;
(2) the first pile tube is lifted by rotary crane and is moved to the gripper position of static pressure machine, by clamper by first Pile tube clamping is followed by near surface and is pressed into several meters, and then the rig for turning round truss is connected with the first drilling equipment, by revolution Truss drives the first drilling equipment movement the first pile tube of alignment, and the first drilling equipment is inserted in the first pile tube;
(3) cylinder action of the first drilling equipment is controlled, the piston rod of oil cylinder is extended, drives drilling rod to move by connecting rod Make, make the bore diameter of drilling rod than the smaller 2-3cm of pile tube diameter of required construction;
(4) startup rig drives the first drilling equipment to work and is drilled to underground, the helical blade row that hack is rotated Go out to surface collection apparatus, stop rig when the hole bored is to than slightly short 1 meter of the first pile tube length, and by rig and first Drilling equipment is separated, and the first pile tube is pressed into in drilling by static pressure machine, and now the first pile tube top is above the ground level 1 meter;
(5) the second pile tube to the first pile tube over top is hung in by rotary crane and keeps 40cm gaps, in the second pile tube Installed between the first pile tube and isolate stool, not allowing the second pile tube to rock ensures lower section safety operation, then will turn round the brill of truss Machine is connected with the second drilling equipment, drives the second drilling equipment to move the second pile tube of alignment by turning round truss, and second is bored Aperture apparatus are inserted in the second pile tube, dock the second drilling equipment and the first drilling equipment at isolation stool lateral opening hole position, so Second pile tube and the first pile tube are welded or mechanically connected by recession except isolation stool;
(6) start rig the second drilling equipment of drive and the first drilling equipment works and drilled to underground simultaneously, hack The helical blade for being rotated is expelled in surface collection apparatus, when the hole bored is to than the second pile tube and the first pile tube length sum Stop rig at slightly short 1 meter, and rig is separated with the second drilling equipment, by static pressure machine by the second pile tube and the first pile tube pressure Enter in drilling, now the second pile tube top is above the ground level 1 meter;
(7) the n-th pile tube to the (n-1)th pile tube over top is hung in by rotary crane and keeps 40cm gaps, repeat step (5) (6) after, reaching design requirement, then the cylinder action of the first drilling equipment is controlled, makes the piston rod of oil cylinder continue to extend, passed through Connecting rod drives drilling rod to stretch out, and expands the drilling scope of drilling rod, starts rig, drives each drilling equipment to work simultaneously, makes the The diameter that the drilling rod of one drilling equipment bores enlarged cavity is 2 times of the first pile tube diameter, and depth is 2-3 times of pile tube diameter;
(8) compressed air is pressed into from drill core pipe, compressed air is tangentially blown into enlarged cavity, will be enlarged by chamber from tangential air outlet Interior hack is blown on the helical blade of rotation and is expelled in surface collection apparatus;
(9) cylinder action of the first drilling equipment is controlled, the piston rod of oil cylinder is shunk, drives drilling rod to shrink by connecting rod To drill core pipe, all drill core pipes and drilling equipment are separated from screw shell and ground is suggested by turning round truss;
(10) by compression pump by fast solidifying expansive concrete through being pumped into screw shell and full of whole enlarged cavity;
(11) all screw shells are proposed into ground from pile tube by turning round truss;
(12) being pressed by static pressure machine makes pile tube bottom enter the 1/2 of enlarged cavity depth, then withdraws static pressure machine, revolution and hangs Car and revolution truss;
(13) the hack re-injection in collection device is entered in pile tube, environmental protection disposal, construction is completed.
Chamfering steel ring is installed in the first pile tube bottom, can when pile tube is pressed into from be oriented to and the closely knit increase side wall of soil compaction rub Wiping is acted on.
Some buckle anchor bars are installed in the first pile tube bottom.If as uplift pile occasion, lowermost pipe The bottom of stake can install several buckle anchor bars, and state of cure is merged with increase pile tube bottom and enlarged cavity inner concrete.
Drilling base expanding and base expanding grouting Static Pipe Pile Construction device and construction method of the invention, can pressure pipe stake, pile tube in drilling Factorial praluction, production process controllability is high, steady quality, and tubular pile concrete intensity reaches more than C80, static pressure machine field operation Simple and safe, pile driving pressure is small, and the injury to pile tube is also small, and the fast efficiency high of speed of application, soil compaction effect is small, and a clump of piles will not be produced Pile tube floats, the phenomenon such as done over again with driving piles, exposing stake because pile tube density is high-leveled and difficult, to neighbouring structure foundation also basic non-hazardous, Engineering detecting is convenient and reliable.Due to bottom enlarged cavity many bigger than former pile tube, and using solidifying expansive concrete filling soon, make pile tube End bearing ability greatly reinforce, be especially suitable for the hardpan such as hard layer of sand, gravel layer and the static pressure construction technology of routine is difficult With the occasion for penetrating, the invention can solve at one stroke land be difficult with bigbore tube pile construction (because pile tube it is bigger, pressure Stake power is bigger, more than 1000 tons of large-tonnage static pressure machines almost do not have and too big live place of conducting oneself with dignity also does not possess), can wash in a pan The bored concrete pile that relatively costly, quality is unstable, influence environment, the duration is more long is eliminated, the scope of application of pile tube has been widened significantly.With most The quiet brill of pile tube of nearly in the market exploitation is taken root in engineering method and is compared, and the present invention does not need mud off, and in drilling, piling is synchronously carried out, The carrying that pile tube can improve pile tube with institute's some frictional force of the wall of a borehole reduces horizontal shift, and efficiency of construction is high, drill core pipe It is interior that the alloy cutter head drilling rod with two-stage Telescopic is installed, there is screw shell to be used to discharge mud outside drill core pipe, during drilling Drill core pipe rotates simultaneously with screw shell, and drilling finishes screw shell end and is provided with a tangential air outlet, to be blown into compression Soil in air cleaning enlarged cavity, then proposes drill core pipe and drilling rod, with compression pump from screw shell from screw shell Concrete is injected in endoporus and expands cavity segment full of bottom, combined together so as to reach pile crown and bottom expansion cavity segment, mutually Between will not produce dislocation, construction quality stabilization, it is ensured that the load-carrying properties of end-bearing pile.Using the device, can make on land Pile foundation construction is carried out with the pile tube of the 700-1000mm of larger diameter seem more easy, and static pressure machine uses conventional products 600- 800 tons of models meet and use enough, and have noise and the diesel hammer Driven Piles machine of air pollution can be completely of the invention Substituted, be conducive to environmental protection.Pile driving pressure is small during due to construction, and pile crown stress is small, and pile end board can be cancelled completely, has saved big Dimension material, greatly reduces material cost.Pile tube bottom termination install chamfering steel ring can when pile tube be pressed into from guiding and soil compaction Closely knit increase sidewall friction effect, termination is installed several buckle anchor bars, is easy to when the concreting of cavity segment is expanded By buckle anchor bar also pre-buried fusion together, the resistance to plucking effect of the pile tube is greatly improved.The present invention be also suitable precast square pile, The pile foundation constructions such as prefabricated bamboo joint pile, prefabricated polygonal pile.
Above-mentioned specific embodiment cannot function as limiting the scope of the invention, for the technology people of the art For member, any alternate modification or conversion made to embodiment of the present invention are all fallen within protection scope of the present invention.
The present invention does not describe part in detail, is the known technology of those skilled in the art of the present technique.

Claims (6)

1. a kind of drilling base expanding and base expanding grouting Static Pipe Pile Construction device, it is characterised in that:Including static pressure machine, use is provided with static pressure machine To clamp the clamper of pile tube, rotary crane and revolution truss are respectively equipped with the static pressure machine of clamper both sides, in revolution purlin The rig that an output shaft is set down is provided with the top of frame, the output shaft of rig is connected with the drilling equipment being vertically arranged, described Drilling equipment includes a screw shell with helical blade, and a drill core pipe, screw shell and drill core are provided with screw shell Pipe is connected by latch, and tangential air outlet is provided with the bottom side of screw shell, and one is provided with the inside of drill core bottom of the tube can stretch The drill rod mechanism of contracting;The drill rod mechanism is located at the oil cylinder that the piston rod on the inside of drill core bottom of the tube is set down, oil cylinder including one One end respectively with two connecting rods of piston rod be hinged and connected, the other end of two connecting rods is hinged and connected with the middle part of a drilling rod respectively, The inner of two drilling rods is hinged and connected.
2. a kind of drilling base expanding and base expanding grouting Static Pipe Pile Construction device according to claim 1, it is characterised in that:At pile tube bottom Portion is provided with chamfering steel ring.
3. a kind of drilling base expanding and base expanding grouting Static Pipe Pile Construction device according to claim 1, it is characterised in that:At pile tube bottom Portion is provided with some buckle anchor bars.
4. it is a kind of it is as claimed in claim 1 drilling base expanding and base expanding be in the milk Static Pipe Pile Construction device construction method, it is characterised in that: Comprise the following steps:
(1) static pressure machine is first moved to the pre- construction location of pile tube;
(2) the first pile tube is lifted by rotary crane and is moved to the gripper position of static pressure machine, by clamper by the first pile tube Clamping is followed by near surface and is pressed into several meters, then the rig for turning round truss is connected with the first drilling equipment, by turning round truss Drive the first drilling equipment to move the first pile tube of alignment, and the first drilling equipment is inserted in the first pile tube;
(3) cylinder action of the first drilling equipment is controlled, the piston rod of oil cylinder is extended, drives drilling rod to act by connecting rod, made Pile tube diameter smaller 2-3cm of the bore diameter of drilling rod than required construction;
(4) startup rig drives the first drilling equipment to work and is drilled to underground, and the helical blade that hack is rotated is expelled to In surface collection apparatus, stop rig when the hole bored is to than slightly short 1 meter of the first pile tube length, and by rig and the first drilling Device is separated, and the first pile tube is pressed into in drilling by static pressure machine;
(5) the second pile tube to the first pile tube over top is hung in by rotary crane and keeps 40cm gaps, in the second pile tube and the Isolation stool is installed between one pile tube, then the rig for turning round truss is connected with the second drilling equipment, driven by turning round truss Second drilling equipment movement the second pile tube of alignment, and the second drilling equipment is inserted in the second pile tube, opened in isolation stool side The docking of hole portion position the second drilling equipment and the first drilling equipment, then remove isolation stool, and the second pile tube and the first pile tube are welded Or mechanically connect;
(6) start rig the second drilling equipment of drive and the first drilling equipment works and drilled to underground simultaneously, hack is revolved The helical blade for turning is expelled in surface collection apparatus, when the hole bored is extremely slightly shorter with the first pile tube length sum than the second pile tube Stop rig at 1 meter, and rig separated with the second drilling equipment, by static pressure machine by the second pile tube and the first pile tube be pressed into In drilling;
(7) the n-th pile tube to the (n-1)th pile tube over top is hung in by rotary crane and keeps 40cm gaps, repeat step (5) and (6) after, reaching design requirement, then the cylinder action of the first drilling equipment is controlled, makes the piston rod of oil cylinder continue to extend, by even Bar drives drilling rod to stretch out, and expands the drilling scope of drilling rod, starts rig, drives each drilling equipment to work simultaneously, makes first The diameter that the drilling rod of drilling equipment bores enlarged cavity is 2 times of the first pile tube diameter, and depth is 2-3 times of pile tube diameter;
(8) compressed air is pressed into from drill core pipe, compressed air is tangentially blown into enlarged cavity, will be enlarged by chamber from tangential air outlet Hack is blown on the helical blade of rotation and is expelled in surface collection apparatus;
(9) cylinder action of the first drilling equipment is controlled, the piston rod of oil cylinder is shunk, drives drilling rod to be contracted to brill by connecting rod In core pipe, all drill core pipes and drill rod mechanism are separated from screw shell and ground is suggested by turning round truss;
(10) by compression pump by fast solidifying expansive concrete through being pumped into screw shell and full of whole enlarged cavity;
(11) all screw shells are proposed into ground from pile tube by turning round truss;
(12) by static pressure machine press make pile tube bottom enter enlarged cavity depth 1/2, then withdraw static pressure machine, rotary crane and Revolution truss;
(13) the hack re-injection in collection device is entered in pile tube, construction is completed.
5. it is according to claim 4 drilling base expanding and base expanding be in the milk Static Pipe Pile Construction device construction method, it is characterised in that: First pile tube bottom is provided with chamfering steel ring.
6. it is according to claim 4 drilling base expanding and base expanding be in the milk Static Pipe Pile Construction device construction method, it is characterised in that: First pile tube bottom is provided with some buckle anchor bars.
CN201510752619.2A 2015-11-06 2015-11-06 One kind drilling base expanding and base expanding grouting Static Pipe Pile Construction device and construction method Active CN105239575B (en)

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CN109853533A (en) * 2019-04-08 2019-06-07 王磊 The construction method of static-pressure expanding bottom pile
CN112096281B (en) * 2020-09-16 2022-05-17 尚俏佳 Drilling, pile splicing and pile planting all-in-one machine and construction method thereof

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FR2575776B1 (en) * 1985-01-04 1987-07-31 Juei Jse Lin METHOD FOR CONSTRUCTING MIXED CONCRETE PILES ON SITE
CN2501913Y (en) * 2001-10-11 2002-07-24 浙江大学 Umbrella shape pile bottom, pile body enlarger
CN2503116Y (en) * 2001-10-18 2002-07-31 赵书平 Variable club-footed support forming machine
CN1168877C (en) * 2002-12-30 2004-09-29 蔡崇晓 Multi-beam static pressure pile-pressing machine
CN201162217Y (en) * 2007-12-26 2008-12-10 高世科 Construction equipment for concrete pedestal pile
CN104763328B (en) * 2015-04-02 2017-03-08 宁波易和桩基工程技术开发有限公司 A kind of hydraulic pressure reaming circulation drilling machine and its reaming pile constructing process
CN205116168U (en) * 2015-11-06 2016-03-30 李全民 End grout static pressure tubular pile construction equipment is expanded in drilling

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