CN207987921U - A kind of spiral spray expansion extruding drilling machine - Google Patents
A kind of spiral spray expansion extruding drilling machine Download PDFInfo
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- CN207987921U CN207987921U CN201820154266.5U CN201820154266U CN207987921U CN 207987921 U CN207987921 U CN 207987921U CN 201820154266 U CN201820154266 U CN 201820154266U CN 207987921 U CN207987921 U CN 207987921U
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Abstract
It sprays to expand the utility model discloses a kind of spiral and squeezes drilling machine, including spiral hollow drilling rod, power head, spiral hollow drilling rod core tube wall or inner wall side are from top to bottom equipped with high-pressure slip-casting pipe, wherein, the spiral hollow drilling rod includes epimere drilling rod and hypomere drilling rod, wherein, epimere drilling rod and hypomere drilling rod are integral by flanged joint, the radius of the helical blade of epimere drilling rod is more than the radius of the helical blade of hypomere drilling rod, the lower end of the high-pressure slip-casting pipe is provided with multilayer slip casting nozzle, every layer of slip casting nozzle is respectively positioned on the outer peripheral lower section of helical blade of epimere drilling rod bottom.The drilling machine and the combination of bikini pile-driver tower, both can drill, guncreting, multilayer nozzle can the double expanding bodies of taper type of churning, and spray pile body wing plate can be determined, with this drilling machine pile, simple for process, low cost is suitable for a variety of geological conditions, the special pile-type of the expanding body of double taper types can be made in pile body different location, simple in structure, bearing capacity of single pile is high, and speed of application is fast, high-quality.
Description
Technical field
The utility model relates generally to concrete-pile drilling machine, concretely relates to a kind of concrete-pile spiral
Drilling machine.
Background technology
Currently, the adjustment with construction industry develops, architectural engineering requires higher and higher, therefore coagulation to ground design and construction
Native stake obtains more and more extensive application in the architectural engineerings such as skyscraper, bridge, high ferro, harbour.
In order to make pile foundation disclosure satisfy that resistance to deformation, antidetonation and bearing capacity Architectural Design Requirements, frequently with stake is lengthened, stake is increased
The modes such as body diameter improve bearing capacity.But the dosage for increasing concrete can all be led to by lengthening or increase pile body, especially be worked as
When the ratio between pile body length and diameter is excessive, the bearing capacity of pile body can be remarkably decreased, and be carried by lengthening or increasing pile body diameter
Height, the bearing capacity of pile body are often futile.A large amount of wastes of concrete, some mechanical equipments can certainly will be also caused simultaneously
Compaction pile periphery soil layer pile, consumption energy is larger, and speed of application is slow.
Application for a patent for invention CN201710434805.0 and utility model patent the ZL 201720669956.X of the applicant
Propose a kind of spiral sprinkling irrigation extruding combination unit, including hollow drill, power head and Multifunctional fluid director, hollow drill upper end
Power head is installed, power head is installed above to have straight connector, straight connector side to be connected with defeated concrete bend pipe, straight connector upper end
Multifunctional fluid director is installed, the side of Multifunctional fluid director is provided with logical slurry connector, ventilating joint and water flowing connector, core drill
Bar is from top to bottom equipped with high-pressure slip-casting (slurry, gas or slurry, gas and water) pipe, the lower end of high-pressure slip-casting (slurry, gas or slurry, gas and water) pipe
It is provided with multilayer slip casting (slurry, gas or slurry, gas and water) nozzle, the bottom of hollow drill is equipped with drill bit, in the drilling rod of drill bit lower end
Hinge type valve is installed, the back side of hinge type valve is provided with postive stop baffle, the open side of hinge type valve in heart pipe plane
It is provided with bolt-type lock, the lower surface of hinge type valve is provided with apex point.It can be used for making sprinkling irrigation using the device to squeeze
Press built pile.
The application for a patent for invention CN201710183031.9 and utility model patent ZL201720295981.6 of the applicant
It proposing a kind of sprinkling irrigation and squeezes built pile, a combination thereof stake main body includes pile cover, pile body and expanding body successively from top to bottom, pile cover,
Pile body and expanding body are integral type.Its pile cover is to be filled into superfluidity coagulation at pore pressure with the outer tube of pressure filling back taper stepped ramp type drilling rod
Native pile cover.Pile body is the polygon sprayed surely with high pressure water mud, by drilling rod vibration-extrusion at polygon Superfluid state concrete stake
Body.Expanding body is to squeeze Superfluid state concrete by drill vibration, forms concrete enlarged footing, and one layer of compacted cement of outsourcing
The rigid expanding body of soil and the high-pressure rotary-spray inversed taper platform shape of concrete.It the advantage is that：Larger concrete cone is squeezed at stake end
There is one layer of soil cement mixed with concrete outside platform shape major part, then outside is compacted soil layer, pile body is sprayed into polygonal, increase stake
Side frictional resistance area, the descending reinforcing cage in Superfluid state concrete in stake holes form " Superfluid state concrete " compacted stake holes inner periphery
Soil layer, as sprinkling irrigation squeeze built pile, which can improve bearing capacity of single pile.
But since expanding body is located at the least significant end of pile body, i.e. stake end position so that the scope of application of the built pile is significantly
It is limited.In complicated geological conditions, for example, it is shallower with layer bit depth where the higher supporting course of shearing strength when, and
The built pile causes bearing capacity of single pile to cannot be satisfied design requirement because expanding body is located at stake end.Therefore, to solve the above problems,
There is an urgent need for be improved to the drilling machine used in above-mentioned patent.
Utility model content
The purpose of this utility model is to provide a kind of spiral spray expansion extruding drilling machine.
The technical solution of use is specific as follows：
A kind of spiral spray expansion extruding drilling machine, including spiral hollow drilling rod, power head, spiral hollow drilling rod core tube wall or interior
Wall side is from top to bottom equipped with high-pressure slip-casting pipe, wherein and the spiral hollow drilling rod includes epimere drilling rod and hypomere drilling rod,
In, epimere drilling rod and hypomere drilling rod are integral by flanged joint, and the radius of the helical blade of epimere drilling rod is more than hypomere drilling rod
Helical blade radius, the lower end of the high-pressure slip-casting pipe is provided with multilayer slip casting nozzle, and every layer of slip casting nozzle is respectively positioned on
The outer peripheral lower section of helical blade of section drilling rod bottom.
Spiral spray described in the utility model, which is expanded, squeezes drilling machine, wherein epimere run of steel l1>5m, hypomere run of steel l2
>6m, epimere drill pipe diameter d=700mm~800mm, hypomere drill pipe diameter d1=500mm~600mm, d=d1+0.2m。
Spiral spray described in the utility model, which is expanded, squeezes drilling machine, wherein the number of plies of the slip casting nozzle is 2-10 layers.
Spiral spray described in the utility model, which is expanded, squeezes drilling machine, wherein every layer of slip casting nozzle is equipped with 1-6 nozzle, often
The pressure-bearing of a nozzle is 2-40MPa, wherein the preferably 25MPa in soil layer, the preferably 20MPa in layer of sand.
Spiral spray described in the utility model, which is expanded, squeezes drilling machine, wherein the spacing between adjacent upper layer and lower layer slip casting nozzle
For 5~30cm, wherein the preferably 15cm in soil layer, preferably 20cm when layer of sand, the two neighboring spray in every layer of slip casting nozzle
Level interval between mouth is 1~6cm, wherein preferably 2~4cm in soil layer, preferably 4~6cm when layer of sand, nozzle
A diameter of 2-10mm.
Spiral spray described in the utility model, which is expanded, squeezes drilling machine, wherein the number of plies of the slip casting nozzle is 3 layers, every layer of note
Spray nozzle for slurry is equipped with 2 nozzles, a diameter of 2mm of nozzle.
The pile-type of the built pile has concentrated rotary churning pile, guncreting pile, the stake of back taper step, pouring mortar pile, a variety of elder generations such as spray wing plate stake
The advantages of into pile-type；Special drilling machine has been innovated again, can repeatedly spray sub-surface again with multilayer nozzle plenum, makes bipyramid platform wedge
The expanding body of subtype and with the compacted soil layer of drilling rod vibration-extrusion Superfluid state concrete, simple process is technologically advanced, low cost, quality
It is good.Wherein, " spray with high-bearing capacity, which is expanded, squeezes built pile " expanding body of inverted cone-shaped is preferably on geologic report pile body soil layer
Selection is suitble to be made with the high soil layer of relatively high deformation modulus and shearing strength.
The analysis for the built pile stress deformation situation that the utility model makes：
(1) after stake top loading carries, pile body superstructure load passes to guncreting core stake first, and core stake passes through cement
Cohesive force between soil and core stake is transmitted to soil cement, and then soil cement is bonded by the high pressure water mud between compacted soil layer
Power, be transmitted to by compacted soil layer or permeable formation (in this way from core stake to the soil body by the transition of soil cement formed it is strong, in, it is weak gradually
Change process constitutes a kind of low rational Load transmission body structure of high, the peripheral intensity of intermediate intensity) so that a lateral area is increased, by
The frictional resistance between stake soil originally is converted by the shearing force of soil layer other than compacted soil layer, stake surrounding soil one is pulled to remove
It is heavy.
(2) use the high-speed jet of high-pressure rotary-spray cement mortar, impact, cutting, the broken formation soil body, and with grout filling,
Blending, stirring, infiltration solidify out into a reverse taper hard shell with the surface relief injustice of special construction in soil.Outside hard shell
Compacted soil layer bearing capacity is sprayed close to passive earth pressure by high.After stake top loading carries, by frictional resistance, absorption on inversed taper platform inclined-plane
The entity core of power and support force (stress of tangential force and normal force), frustum Wedge-shaped is symmetrical outer crowded around.Due to soil
With the frictional resistance on the inclined-plane of substrate, to the effect of contraction of grogs lateral displacement under substrate, when stake end is embedding deeper, Wedge-shaped
Restraining force in substrate is bigger, and below frustum and surrounding has the prodigious passive earth pressure by densification reality to support again, so spray
Expand and squeeze the expanding body of built pile, there is prodigious support force, if the expanding body bearing capacity of double taper types is carried more than pile damage
Power, and Light deformation, bearing capacity of single pile are exactly the destruction load of pile body, and sedimentation and deformation is exactly the flexible deformation of pile body.
(3) according to the Deformation Theory of above " spray, which is expanded, squeezes built pile ", after stake top loading carries, pile body pulls surrounding soil
Sink together, while soil layer connects together again and around frustum, the bearing capacity (d on the expanding body inclined-plane of joint of churning and drilling
=700mm, d1The wing drilling rods of=500mm, in layer of sand) in 10000KN or more (the only flexible deformation of pile body), the destruction of stake is
The destruction of pile body, but pile crown is the weakest link of pile body again, so pile crown 1.5m length will reinforce in design.
Compared with the existing technology, the protrusion effect of the utility model is：
(1) the utility model uses the special drilling machine of multilayer nozzle on concrete pile body or stake end, makes concrete and water
The expanding body of double taper types of soil composition, stake diameter above expanding body more than or equal to the stake diameter below expanding body, expanding body
Be sprayed on upper square pile diameter soil cement and coagulation local soil type at wing plate, not merely increase frictional resistance area, depending on spray wing plate cement
Slurry after drilling rod squeezes, plays the role of post jacking full of around entire pile body.
(2) the spiral hollow drilling rod of the utility model drilling machine is divided into two sections, and the diameter of epimere is more than hypomere diameter, can
In order to make expanding body in any desired position.When expanding body is located at the top or middle part of built pile, such as expanding body
The stake diameter of top is more than the stake diameter below expanding body, and concrete amount is greatly saved.
(3) it can both be drilled using the special drilling machine of the utility model, guncreting, the double taper types of multilayer nozzle churning
Expanding body, and can determine spray pile body wing plate, with this drilling machine pile, simple for process, low cost is suitable for a variety of geological conditions, can be
Pile body different location makes the special pile-type of double expanding bodies of taper type, and simple in structure, bearing capacity of single pile is high, and speed of application is fast, matter
It measures.
Explanation and specific embodiment expand extruding drilling machine to the spiral spray of the utility model and make furtherly below in conjunction with the accompanying drawings
It is bright.
Description of the drawings
Fig. 1 is that the structural schematic diagram for squeezing drilling machine is expanded in spiral spray；
In Fig. 2, (a) is the partial enlarged view of the link position of epimere drilling rod and hypomere drilling rod；(b) it is 3 layers of slip casting nozzle
Birds-eye perspective；
In Fig. 3, (a) is the sectional view of 1-1 sections in Fig. 3 d, is (b) sectional view of 2-2 sections in Fig. 3 d, (c) is Fig. 3 d
The sectional view of middle 3-3 sections (d) is located at the section of built pile structural schematic diagram and each position in the middle part of built pile for expanding body
Figure；
In Fig. 4, (a)~(d) is the construction procedure schematic diagram of built pile in Fig. 3；
In Fig. 5, (a) is the sectional view of 1-1 sections in Fig. 5 d, is (b) sectional view of 2-2 sections in Fig. 5 d, (c) is Fig. 5 d
The sectional view of middle 3-3 sections (d) is located at the section of built pile structural schematic diagram and each position in the middle part of built pile for expanding body
Figure.
Specific implementation mode
Embodiment 1
In conjunction with shown in Fig. 1-2, a kind of spiral spray expansion extruding drilling machine, including spiral hollow drilling rod 1, power head 2, spiral hollow
1 core tube wall side of drilling rod is from top to bottom equipped with high-pressure slip-casting pipe 5, and spiral hollow drilling rod 1 includes that epimere drilling rod 3 and hypomere bore
Bar 4, wherein epimere drilling rod 3 and hypomere drilling rod 4 are integral by flanged joint, and the radius of the helical blade of epimere drilling rod 3 is more than
The lower end of the radius of the helical blade of hypomere drilling rod 4, the high-pressure slip-casting pipe 5 is provided with multilayer slip casting nozzle 6, every layer of slip casting spray
First 6 are respectively positioned on the outer peripheral lower section of helical blade of 3 bottom of epimere drilling rod.
3 length l of epimere drilling rod1For 6m, 4 length l of hypomere drilling rod2For 8m, 3 diameter d=700mm of epimere drilling rod, hypomere drilling rod
4 diameter d1=500mm, d=d1+0.2m。
It in other variant embodiments, is required according to practice of construction, as long as epimere drilling rod 3 ensures length l1>5m, under
4 length l of section drilling rod2>6m, 3 diameter of epimere drilling rod can be 700mm~800mm, and 4 diameter of hypomere drilling rod can be 500mm
~600mm, d=d1+ 0.2m.
The number of plies of slip casting nozzle 6 is 3 layers, is welded on the last 3 helical layer blade of 3 bottom of epimere drilling rod.Every layer of slip casting
Nozzle 6 is equipped with 2 nozzles；The pressure-bearing of each nozzle is 2-40MPa.Spacing between adjacent upper layer and lower layer slip casting nozzle 6 is
20cm；The level interval between two neighboring nozzle in every layer of slip casting nozzle 6 is 4cm, a diameter of 2mm of nozzle.
It in other variant embodiments, is required according to practice of construction, the number of plies of slip casting nozzle 6 can be 2-10 layers.Every layer
1-6 nozzle can be equipped on slip casting nozzle 6, the pressure-bearing of each nozzle is set as 2-40MPa.Adjacent upper layer and lower layer slip casting nozzle 6 it
Between spacing can be 5~30cm, the level interval between two neighboring nozzle in every layer of slip casting nozzle 6 can be 1~
The diameter of 6cm, nozzle can be 2-10mm.
Embodiment 2
As shown in figure 3, a kind of spray with high-bearing capacity, which is expanded, squeezes built pile, pile body is by pile body 101, expanding body 103
It is formed with stake end 106, sets that there are one the expanding bodies 103 with the integrally formed double taper types of pile body on pile body 101.It is equipped in pile body
Steel reinforcement cage.Double taper types are broad in the middle, upper and lower gradually smaller structure.
Expanding body 103 is located at the sandy soils of 101 position of pile body, and pile body 101 is basic with pile body axis equipped with one layer
Vertical wing plate 102, every layer of wing plate 102 is 3 pieces, and is evenly distributed.The width of wing plate 102 be 5~25cm, thickness be 2~
12cm。
The pile body diameter of 103 top of expanding body is more than the pile body diameter of 103 lower section of expanding body.
The lower bevel of expanding body 103 and the angle α of pile body central axis be >=10 °~≤80 °.
Expanding body 103 is to squeeze Superfluid state concrete by bit vibration, forms concrete enlarged footing 105, and outsourcing one
The rigid expanding body of the double taper types of high-pressure rotary-spray of the compacted soil cement 104 of layer and concrete.
Its construction method the specific steps are：
(1) design depth is bored into such as Fig. 4 a by the drilling that combines of the drilling machine of embodiment 1 and bikini pile-driver tower
Degree, stop operating drilling rod；
(2) nozzle exit pressure for adjusting the slip casting nozzle on drilling rod is 20MPa, and the promotion speed for adjusting drilling rod is 20cm/
min；While promoting spiral hollow drilling rod, projected depth on slip casting nozzle nozzle churning cement mortar, shaken with drilling rod
Dynamic pressure fills Superfluid state concrete and makes double expanding bodies of taper type to setting absolute altitude, is highly 2.0m, such as Fig. 4 b；
(3) it is 1.5m/min that adjustment drilling rod, which promotes speed, and nozzle exit pressure remains unchanged, and the fixed spray pile body wing is changed to by churning
Plate, while pressing and filling Superfluid state concrete to designed elevation；In fixed spray pile body wing plate, sprayed in 3 directions, such as Fig. 4 c,
Form plain concrete pile；
(4) steel reinforcement cage is inserted into the Superfluid state concrete in stake holes and arrives projected depth, form reinforced concrete foundation stake,
Such as Fig. 4 d.
It in other variant embodiments, is required according to practice of construction, wherein the nozzle exit pressure of slip casting nozzle in step (2)
Can be 2~40MPa, the promotion speed of drilling rod can be 6~60cm/min；Double expanding body height of taper type can be 0.5~
3.0m.It can be 0.5~2m/min that drilling rod, which promotes speed, in step (3).
Embodiment 3
As shown in figure 5, a kind of spray with high-bearing capacity, which is expanded, squeezes built pile, pile body by pile body 201, expanding body 203,
Pile body 206, expanding body 208 and stake end 211 form, and expanding body 203 and expanding body 208 are double taper types, are one with pile body
It is body formed.Steel reinforcement cage is equipped in pile body.Double taper types are broad in the middle, upper and lower gradually smaller structure.
Expanding body 203 and expanding body 208, which are located at pile body, vertically has the higher supporting course position of shearing strength.Pile body 201
With one layer of wing plate substantially vertical with pile body axis (202,207) is respectively provided on pile body 206, every layer of wing plate is 3 pieces, and along week
To uniformly.The width of wing plate is 5~25cm, and thickness is 2~12cm.
The pile body maximum gauge of 203 top of expanding body is more than the pile body maximum gauge of 203 lower section of expanding body.Expanding body 208
The pile body maximum gauge of top is equal to the pile body maximum gauge of 208 lower section of expanding body.
The angle α of the lower bevel of expanding body 203 and expanding body 208 and pile body central axis is >=10 °~≤80 °.
Expanding body 203 is to squeeze Superfluid state concrete by drill vibration, forms concrete enlarged footing 205, and outsourcing one
The rigid expanding body of the double taper types of high-pressure rotary-spray of the compacted soil cement 204 of layer and concrete.
Expanding body 208 is to squeeze Superfluid state concrete by drill vibration, forms concrete enlarged footing 210, and outsourcing one
The rigid expanding body of the double taper types of high-pressure rotary-spray of the compacted soil cement 209 of layer and concrete.
Embodiment described above is only that preferred embodiments of the present invention are described, not to this practicality
Novel range is defined, and under the premise of not departing from the spirit of the design of the utility model, those of ordinary skill in the art are to this
The various modifications and improvement that the technical solution of utility model is made should all fall into the protection of the utility model claims book determination
In range.
Claims (6)
1. a kind of spiral spray, which is expanded, squeezes drilling machine, including spiral hollow drilling rod (1), power head (2), spiral hollow drilling rod (1) core pipe
Outer wall or inner wall side are from top to bottom equipped with high-pressure slip-casting pipe (5), it is characterised in that：The spiral hollow drilling rod (1) includes
Epimere drilling rod (3) and hypomere drilling rod (4), wherein epimere drilling rod (3) and hypomere drilling rod (4) are integral by flanged joint, epimere
The radius of the helical blade of drilling rod (3) is more than the radius of the helical blade of hypomere drilling rod (4), under the high-pressure slip-casting pipe (5)
End is provided with multilayer slip casting nozzle (6), and every layer of slip casting nozzle (6) is respectively positioned on the helical blade outer edge of epimere drilling rod (3) bottom
Lower section.
2. spiral spray according to claim 1, which is expanded, squeezes drilling machine, it is characterised in that：Epimere drilling rod (3) length l1>5m, hypomere
Drilling rod (4) length l2>6m, epimere drilling rod (3) diameter d=700mm~800mm, hypomere drilling rod (4) diameter d1=500mm~
600mm, d=d1+0.2m。
3. spiral spray according to claim 2, which is expanded, squeezes drilling machine, it is characterised in that：The number of plies of the slip casting nozzle (6) is
2-10 layers.
4. spiral spray according to claim 3, which is expanded, squeezes drilling machine, it is characterised in that：Every layer of slip casting nozzle (6) is equipped with 1-6
The pressure-bearing of a nozzle, each nozzle is 2-40MPa.
5. spiral spray according to claim 4, which is expanded, squeezes drilling machine, it is characterised in that：Adjacent upper layer and lower layer slip casting nozzle (6)
Between spacing be 5~30cm, the level interval between two neighboring nozzle in every layer of slip casting nozzle (6) is 1~6cm, spray
A diameter of 2-10mm of mouth.
6. spiral spray according to claim 5, which is expanded, squeezes drilling machine, it is characterised in that：The number of plies of the slip casting nozzle (6) is 3
Layer, every layer of slip casting nozzle (6) are equipped with 2 nozzles, a diameter of 2mm of nozzle.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820154266.5U CN207987921U (en) | 2018-01-30 | 2018-01-30 | A kind of spiral spray expansion extruding drilling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820154266.5U CN207987921U (en) | 2018-01-30 | 2018-01-30 | A kind of spiral spray expansion extruding drilling machine |
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| Publication Number | Publication Date |
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| CN207987921U true CN207987921U (en) | 2018-10-19 |
Family
ID=63821400
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| CN201820154266.5U Active CN207987921U (en) | 2018-01-30 | 2018-01-30 | A kind of spiral spray expansion extruding drilling machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115928740A (en) * | 2023-03-10 | 2023-04-07 | 中建八局第二建设有限公司 | Method and device for reaming long spiral bored pile by grouting and spraying first |
-
2018
- 2018-01-30 CN CN201820154266.5U patent/CN207987921U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115928740A (en) * | 2023-03-10 | 2023-04-07 | 中建八局第二建设有限公司 | Method and device for reaming long spiral bored pile by grouting and spraying first |
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