CN110528516A - For reinforcing the device and method of steel pile casting stability when drilling construction - Google Patents
For reinforcing the device and method of steel pile casting stability when drilling construction Download PDFInfo
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- CN110528516A CN110528516A CN201910827613.5A CN201910827613A CN110528516A CN 110528516 A CN110528516 A CN 110528516A CN 201910827613 A CN201910827613 A CN 201910827613A CN 110528516 A CN110528516 A CN 110528516A
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- grouting pipe
- steel pile
- pile casting
- reinforcing
- pressure sensor
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
-
- 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
- E02D5/66—Mould-pipes or other moulds
-
- 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
- E02D5/66—Mould-pipes or other moulds
- E02D5/68—Mould-pipes or other moulds for making bulkheads or elements thereof
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Agronomy & Crop Science (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses when a kind of drilling construction for reinforcing the device and method of steel pile casting stability, the device includes steel pile casting, the lateral wall of steel pile casting is welded with more for the grouting pipe to soil body grout injection, and every grouting pipe is equipped with the defeated slurry hole of multiple and different height；The device further includes more and is in charge of for being connected to the defeated slurry of grouting pipe upper opening；Every grouting pipe is equipped with the pressure sensor for measuring the grouting pipe bottom stress；The device further includes that the length-adjustable rope sheave of multiple unwrapping wire, each rope sheave draw steel cable correspondingly with grouting pipe, which is equipped with one for crashing into corresponding grouting pipe to control the plug of the grouting pipe slip casting height；The key of this method is the reading of the pressure sensor according to each grouting pipe, the unwrapping wire length of the compensation each rope sheave of setting, and then obtains different reinforcing height.The device and method are avoided that horizontal vertical displacement occurs for steel pile casting.
Description
Technical field
The present invention relates to pile foundation drilling construction technical fields, steady for reinforcing steel pile casting when being especially a kind of drilling construction
Qualitative device and method.
Background technique
With China's expanding economy, large bridge, large-scale wind electricity, large size are across the public work of the heavy civils such as river tunnel over strait
The quantity of journey is increasing.Above-mentioned project can be related to the drilling construction of engineering pile foundation, and when engineering pile foundation drilling construction, often
Default steel pile casting is needed, i.e., the main body of steel pile casting is placed in the soil body by Static pressure pile driver or vibration hammer etc. and 30cm is left at the top of steel pile casting
The right side is basseted, and to play positioning pile foundation center, retaining wall prevents collapse hole, stablize mud liquid level in hole, prevents ground foreign matter
The effects of falling into aperture.
And steel pile casting retaining wall has the following deficiencies: since steel pile casting is from great when prior art drilling construction, therefore steel pile casting
It is very big to the stability dependency of its bottom end holding force soil body, and inevitably there is heterogeneity, i.e. steel pile casting difference circumferential position in the soil body
Soil strength, bearing capacity it is different, moreover drill bit creep into when vibration also relatively acutely, above-mentioned vibration will lead to the casing base opening soil body
When bad stability, especially drill bit pass through steel pile casting base opening, exists to the base opening periphery soil body and strong wash away and disturb；It is above-mentioned
Factor will lead to steel pile casting while lateral and vertical displacement occur, and bore so that drilling machine stake position misalignment, under drill bit and steel pile casting
Interfering both causes impaired, or even can not continue to creep into, even if drill out steel pile casting base opening down, also due to steel
The horizontal vertical displacement of casing causes drill bit that can not extract.Once above-mentioned accident occurs, a large amount of manpower, material resources and financial resources will be wasted and gone
Processing.
Summary of the invention
The invention solves a technical problem be to provide a kind of pore-forming for being avoided that steel pile casting and horizontal vertical displacement occurring
For reinforcing the device of steel pile casting stability when construction.
For reinforcing the dress of steel pile casting stability when a kind of technical solution of the invention is to provide a kind of drilling construction
It sets, it includes steel pile casting, and the lateral wall of steel pile casting is welded with more for the grouting pipe to soil body grout injection, every note
Starch the defeated slurry hole that conduit is equipped with multiple and different height；The device further includes more for being connected to the defeated slurry of grouting pipe upper opening
It is in charge of；Every grouting pipe is equipped with the pressure sensor for measuring the grouting pipe bottom stress；The device further includes and infuses
The conduit length-adjustable rope sheave of multiple unwrapping wire correspondingly is starched, each rope sheave draws steel cable, which sets
There is one to be used to crash into corresponding grouting pipe to control the plug of the grouting pipe slip casting height.
Device when drilling construction of the present invention for reinforcing steel pile casting stability has following excellent compared with prior art
Point.
Firstly, after steel pile casting main part sinks to the soil body, it is in charge of through each defeated slurry, grouting pipe and defeated slurry hole, by water
Mud injects in the soil body of steel pile casting periphery, to its bonding initial set, reinforces its periphery soil body, makes steel pile casting and the common shape of the periphery soil body
At flood soil reinforcing body, the holding forces performances such as periphery soil strength bearing capacity are improved, transverse direction is reduced and vertical displacement occurs
Probability；Avoiding the occurrence of stake position misalignment, drill bit and steel pile casting interferes impaired, drill bit that can not descend brill or rise the drawbacks of pulling out；Moreover, by
In being provided with pressure sensor in each grouting pipe, the soil body of steel pile casting difference circumferential position can be judged according to its reading
Holding force performance, and targetedly compensate, by controlling unwrapping wire length, under limiting plug in each grouting pipe
Extreme position blocks and slurries is prevented to continue to decline, and adds so that each different circumferential position is obtained with what unwrapping wire length was coincide
Gu height, so that it is uniform along the circumferentially each ultimate bearing capacity of joints of steel pile casting, it is rich in and targetedly further decreases horizontal displacement or perpendicular
The probability occurred to differential settlement.Substantially the generation for preventing above-mentioned accident, is greatly saved manpower, material resources and financial resources.
Preferably, being equipped with the solid hopkinson bar for preventing the soil body from entering for filling lumen in each grouting pipe；In this way,
When effectively avoiding sinking steel pile casting, the soil body simultaneously blocks each grouting pipe, guarantees that grouting is smooth.
As further preferred, grouting pipe bottom is sharp portion, and low outer height in the sharp portion, in this way, can be reduced note
The penetration resistance for starching conduit bottom end, improves its sinking efficiency.
As the end still more preferably, at the top of every solid hopkinson bar being equipped with for being stuck in outside corresponding grouting pipe upper opening
Head, every grouting pipe upper end are equipped with external screw thread, are combined with inner thread sleeve on the external screw thread, end is accommodated in inner thread sleeve
It is interior, and the pressure ring of radial convex is equipped at the top of inner thread sleeve, pressure sensor is between pressure ring and end；Above-mentioned design is deposited
It is easy to assembly quick, it is only necessary to be inserted into solid hopkinson bar, block end, shelve pressure sensor, then screw in interior spiral shell in several advantages
Line sleeve；And pressure sensor is protected in inside grouting pipe, the not direct soil body sandstone with bottom is ground, and is protected
Hinder its service life；Also, during inner thread sleeve and pressure ring integrally sink with steel pile casting, end can be pushed, makes to press
Force snesor can really reflect the stress of grouting pipe bottom i.e. solid hopkinson bar bottom, reasonably reflect the circumferential direction node
Lower section soil layer holding force performance, the foundation to adjust different circumferential joint reinforcing height as the later period；Finally, the device disassembly process
Also very convenient, it is only necessary to unscrew inner thread sleeve, taking-up pressure sensor, convenient reading can be facilitated, and take solid hopkinson bar away
Process it is also convenient and efficient.
Preferably, each rope sheave may be rotatably mounted on a wheel carrier one kind as rope sheave actinobacillus device, wheel carrier and rope sheave
On be equipped with jack, be equipped between rope sheave and wheel carrier and lock the bolt of rope sheave corner across two through-holes；In this way, worker is manual
Unwrapping wire takes bolt away, and rope sheave is rotated different circle numbers, so that it may according to the bottom holding force situation of each circumferential node, freely adjust
Its unwrapping wire length.
As still further preferably, which is additionally provided with master controller, and each rope sheave is equipped with a motor, this is electronic
Machine output shaft is connect with rope sheave, which connect with master controller signal, whole pressure sensors also with master controller signal
Connection；In this way, realizing full-automatic regulation, i.e., pressure value is automatically delivered to master controller by each pressure sensor, by leading
Controller converses the holding force performance of each circumferential node, and specific aim compensates, and it is corresponding to converse each circumferential node
Height and unwrapping wire length are reinforced, to control the rotating cycle of the corresponding motor of each circumferential node, final realization is full-automatic
It adjusts.
As another preferred embodiment, grouting pipe bottom end is concordant with steel pile casting bottom end, grouting pipe bottom end is equipped under shed；By
It is very big in stability dependency of the steel pile casting to its bottom end holding force soil body, and drill bit pass through steel pile casting base opening when, to base opening periphery soil
Body wash away with disturb it is also particularly strong, in this way, can directly against the soil body of steel pile casting bottom carry out slip casting, directly improvement bottom
The holding force performance of the soil body, differential settlement caused by the solution to get instant result the node location strength bearing capacity is insufficient and displacement are asked
Topic.
The invention solves another technical problem be to provide it is a kind of be avoided that steel pile casting occur horizontal vertical displacement at
For reinforcing the method for steel pile casting stability when hole is constructed.
For reinforcing the side of steel pile casting stability when a kind of technical solution of the invention is to provide a kind of drilling construction
Method, step include:
A, each grouting pipe is welded on to the lateral wall of steel pile casting, a solid hopkinson bar is put into every grouting pipe,
So that the end of the solid hopkinson bar is stuck in the upper opening of corresponding grouting pipe, places a pressure sensor in each end top surface, and
An inner thread sleeve is screwed on the external screw thread of every grouting pipe upper end；
B, steel pile casting main part is sunk into the soil body with vibration hammer or Static pressure pile driver；During this, the pressure of inner thread sleeve
Ring, which pushes end and solid hopkinson bar, each pressure sensor through pressure sensor, can measure the soil body that every grouting pipe bottom end is subject to
Resistance；
C, each inner thread sleeve is unscrewed, takes pressure sensor away, and extract solid hopkinson bar out from grouting pipe；It is artificial at this time
The reading or each pressure sensor for acquiring each pressure sensor report reading to master controller；
D, according to the reading of the pressure sensor of each grouting pipe, the unwrapping wire length of the compensation each rope sheave of setting is read
Number is bigger, and unwrapping wire length is shorter, and it is bigger to read smaller unwrapping wire length；And the corresponding plug of each rope sheave is put into corresponding slip casting
In conduit；
E, every grouting pipe upper opening is in charge of with a defeated slurry and docks, synchronize to each grouting pipe cement injection
Slurry；Cement slurry impacts downwards plug, and corresponding wirerope is exceptionally straight, and cement slurry is overflowed from each defeated slurry hole for being higher than plug, with
Surrounding soil bonding and reinforcement forms different reinforcing height, and the reinforcing of each circumferential node along the circumferentially each node of steel pile casting
Height and the unwrapping wire length of each plug are coincide one by one.
The advantages of reinforcement means, is: cement slurry being injected in the soil body of steel pile casting periphery, its periphery soil body is reinforced, is improved
Its holding force performance reduces the probability of transverse direction and vertical displacement generation；Moreover, according to the reading of each grouting pipe pressure sensor
Judge the holding force performance of the different circumferential node of steel pile casting, and targetedly compensate, by controlling unwrapping wire length, is formed each
The different reinforcing height of a node keeps circumferential each node holding force uniform, further decreases horizontal or vertical differential settlement hair
Raw probability；And pressure sensor is easy to assembly quick, and keeps it not direct and grind with the soil body sandstone of bottom, ensures it
Service life；Furthermore when sinking steel protecting canister, pressure ring can push end, and pressure sensor is enable really precisely to reflect solid hopkinson bar
The stress of bottom reasonably reflects soil layer holding force performance below the circumferential direction node；Finally, the under shed of grouting pipe bottom end,
Slip casting can be carried out directly against the soil body of steel pile casting bottom, directly improve the holding force performance of bottom soil body, significant effect.
Detailed description of the invention
For reinforcing the knot of the measuring device slip casting state of the device of steel pile casting stability when Fig. 1 is drilling construction of the present invention
Structure schematic diagram.
The structural representation in device sinking watching when Fig. 2 is drilling construction of the present invention for reinforcing steel pile casting stability
Figure.
For reinforcing the partial enlargement knot of the grouting pipe of the device of steel pile casting stability when Fig. 3 is drilling construction of the present invention
Structure schematic diagram.
It is preferred for reinforcing the pressure sensor installation of the device of steel pile casting stability when Fig. 4 is drilling construction of the present invention
Side schematic cross-sectional view.
For reinforcing the enlarged structure signal of the rope sheave of the device of steel pile casting stability when Fig. 5 is drilling construction of the present invention
Figure.
As shown in the figure 1, steel pile casting, 2, grouting pipe, 3, defeated slurry hole, 4, defeated slurry be in charge of, 5, pressure sensor, 6, rope sheave,
7, wirerope, 8, plug, 9, solid hopkinson bar, 10, end, 11, inner thread sleeve, 12, pressure ring, 13, wheel carrier, 14, bolt, 15, connect
Head, 16, defeated slurry general pipeline, 17, slurries pump, 18, stirring pool, 19, wire casing.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples.
As shown in figure 1, figure 2, figure 3, figure 4 and figure 5, for reinforcing the device of steel pile casting stability when drilling construction of the present invention,
It includes steel pile casting 1, and the lateral wall of steel pile casting 1 is welded with more for the grouting pipe 2 to soil body grout injection.Every note
The defeated slurry hole 3 that conduit 2 is equipped with multiple and different height is starched, the defeated slurry hole 3 in every grouting pipe 2 is that helically line wriggles downwards
Distribution, the circumferential spacing in the defeated slurry hole 3 of each adjacent two is 120 degree.
The device further includes more and is in charge of 4 for being connected to the defeated slurry of 2 upper opening of grouting pipe；Specifically, when slip casting, often
The defeated slurry of root is in charge of 4 outlets and is connect through connector 15 with 2 upper opening of grouting pipe, and all it is total with defeated slurry to be in charge of 4 entrances for defeated slurry
Pipe 16 is connected to, and defeated slurry general pipeline 16 is equipped with slurries pump 17, and slurries pump 17 is connected to the stirring pool 18 of storage cement slurry.
Every 2 bottom end of grouting pipe is concordant with 1 bottom end of steel pile casting, and 2 bottom end of grouting pipe is equipped under shed.Every slip casting is led
2 bottom of pipe is sharp portion, and the sharp portion is along the inside low outer height of 1 diameter of steel pile casting.One is equipped in each grouting pipe 2 for filling out
Fill the solid hopkinson bar 9 that lumen prevents the soil body from entering.
Every grouting pipe 2 is equipped with the pressure sensor 5 for measuring the 2 bottom stress of grouting pipe.In the present embodiment,
The mounting structure of pressure sensor 5 is preferably to be equipped at the top of every solid hopkinson bar 9 for being stuck in outside corresponding 2 upper opening of grouting pipe
End 10, every 2 upper end of grouting pipe is equipped with external screw thread, and the external thread section outer diameter of 2 upper end of grouting pipe is less than grouting pipe 2
The outer diameter of middle and lower part normal reach；Inner thread sleeve 11 is combined on the external thread section, end 10 is accommodated in inner thread sleeve 11,
And the pressure ring 12 of radial convex is equipped at the top of inner thread sleeve 11, pressure sensor 5 is between pressure ring 12 and end 10.
The device further includes drawing with the one-to-one multiple length-adjustable rope sheaves 6 of unwrapping wire of grouting pipe 2, each rope sheave 6
Steel cable 7 out, 7 end of wirerope are equipped with one for crashing into corresponding grouting pipe 2 to control 2 slip casting of grouting pipe
The plug 8 of height.It is reserved with wire casing 19 at the top of every grouting pipe 2 tube wall, when slip casting, defeated slurry is in charge of 4 connector 15 and slip casting
When the internal screw thread of 2 upper opening of conduit screws, the tube wall that wirerope 7 passes through grouting pipe 2 through wire casing 19 enters lumen.Certainly, it infuses
After starching 2 upper opening of conduit screw-in connector 15, wire casing 19 becomes string holes, at this point it is possible to a resilient sleeve is covered on wirerope 7,
Above-mentioned string holes is blocked, realizes sealing.
In the present embodiment, the actinobacillus device preferred manual formula of rope sheave 6, structure are as follows: each rope sheave 6 may be rotatably mounted at one
On a wheel carrier 13, it is equipped with jack on wheel carrier 13 and rope sheave 6, is equipped with across two through-holes between rope sheave 6 and wheel carrier 13 to lock
The bolt 14 of 6 corner of rope sheave.
Certainly, the actinobacillus device of the rope sheave 6 of the application is also an option that automatically, i.e., each rope sheave 6 is equipped with an electricity
Motivation, the motor output shaft are connect with rope sheave 6.
The device for being used to reinforce steel pile casting stability is additionally provided with master controller such as PLC control chip, the motor and master
Controller signals connection, whole pressure sensors 5 are also connect with master controller signal.
As shown in figure 1, figure 2, figure 3, figure 4 and figure 5, for reinforcing the method for steel pile casting stability when drilling construction of the present invention,
Its step are as follows.
A, by each grouting pipe 2, circumferentially uniform welding is put in the lateral wall of steel pile casting 1 into every grouting pipe 2
Enter a solid hopkinson bar 9, the end 10 of the solid hopkinson bar 9 is made to be stuck in the upper opening of corresponding grouting pipe 2, is put in each 10 top surface of end
A pressure sensor 5 is set, and screws an inner thread sleeve 11 on the external screw thread of every 2 upper end of grouting pipe；Make pressure
Sensor 5 is limited between the pressure ring 12 of inner thread sleeve 11 and the end 10 of solid hopkinson bar 9.
B, 1 main part of steel pile casting is sunk into the soil body with vibration hammer or Static pressure pile driver；During this, inner thread sleeve 11
Pressure ring 12, which pushes end 10 and solid hopkinson bar 9, each pressure sensor 5 through pressure sensor 5, can measure 2 bottom end of every grouting pipe
It more precisely is the soil body resistance that 9 bottom end of solid hopkinson bar is subject to.
C, each inner thread sleeve 11 is unscrewed, takes pressure sensor 5 away, and extracts solid hopkinson bar 9 out from grouting pipe 2；This
Shi Rengong acquires the reading of each pressure sensor 5 or each pressure sensor 5 automatically reports reading to master controller.
D, according to the reading of the pressure sensor 5 of each grouting pipe 2, the unwrapping wire length of the compensation each rope sheave 6 of setting,
It is shorter to read bigger unwrapping wire length, it is bigger to read smaller unwrapping wire length；And the corresponding plug 8 of each rope sheave 6 is put into corresponding
In grouting pipe 2.
Compensation setting unwrapping wire length in the step is a kind of roadmap, the reading of pressure sensor 5 and unwrapping wire length
Between specific conversion relation, voluntarily can debug and be summarized by experience by site operation personnel, as long as meeting holding force by force
Reinforce this big entire compensation thinking of strengthening length that height is small, holding force is weak.
E, every 2 upper opening of grouting pipe is in charge of 4 with a defeated slurry to dock, is synchronized to each 2 priming petock of grouting pipe
Mud；Cement slurry impacts downwards plug 8, and corresponding wirerope 7 is exceptionally straight, and cement slurry overflows from each defeated slurry hole 3 for being higher than plug 8
Out, with surrounding soil bonding and reinforcement, different reinforcing height, and each circumferential node are formed along the circumferential each node of steel pile casting 1
Height of reinforcing coincide one by one with the unwrapping wire length of each plug 8.
Claims (8)
1. it includes steel pile casting (1), it is characterised in that: steel for reinforcing the device of steel pile casting stability when a kind of drilling construction
The lateral wall of casing (1) is welded with more for the grouting pipes (2) of soil body grout injection, on every grouting pipe (2)
Defeated slurry hole (3) equipped with multiple and different height；The device further includes the more defeated slurries for being connected to grouting pipe (2) upper opening point
It manages (4)；Every grouting pipe (2) is equipped with the pressure sensor (5) for measuring grouting pipe (2) bottom stress；The device
It further include drawing a steel with grouting pipe (2) one-to-one multiple length-adjustable rope sheaves of unwrapping wire (6), each rope sheave (6)
Cord (7), wirerope (7) end are equipped with one for crashing into corresponding grouting pipe (2) to control grouting pipe (2) slip casting
The plug (8) of height.
2. for reinforcing the device of steel pile casting stability when drilling construction according to claim 1, it is characterised in that: each
The solid hopkinson bar (9) for preventing the soil body from entering for filling lumen is equipped in grouting pipe (2).
3. for reinforcing the device of steel pile casting stability when drilling construction according to claim 1, it is characterised in that: slip casting
Conduit (2) bottom is sharp portion, and low outer height in the sharp portion.
4. for reinforcing the device of steel pile casting stability when drilling construction according to claim 2, it is characterised in that: every
The end (10) for being stuck in outside corresponding grouting pipe (2) upper opening is equipped at the top of solid hopkinson bar (9), on every grouting pipe (2)
End is equipped with external screw thread, is combined with inner thread sleeve (11) on the external screw thread, and end (10) are accommodated in inner thread sleeve (11), and
The pressure ring (12) of radial convex is equipped at the top of inner thread sleeve (11), pressure sensor (5) is located at pressure ring (12) and end (10)
Between.
5. for reinforcing the device of steel pile casting stability when drilling construction according to claim 1, it is characterised in that: each
Rope sheave (6) may be rotatably mounted on a wheel carrier (13), and jack, rope sheave (6) and wheel carrier are equipped on wheel carrier (13) and rope sheave (6)
(13) bolt (14) that rope sheave (6) corner is locked across two through-holes is equipped between.
6. for reinforcing the device of steel pile casting stability when drilling construction according to claim 1, it is characterised in that: the dress
It sets and is additionally provided with master controller, each rope sheave (6) is equipped with a motor, which connect with rope sheave (6), the electricity
Motivation is connect with master controller signal, and whole pressure sensors (5) also connect with master controller signal.
7. for reinforcing the device of steel pile casting stability when drilling construction according to claim 1, it is characterised in that: slip casting
Conduit (2) bottom end is concordant with steel pile casting (1) bottom end, and grouting pipe (2) bottom end is equipped under shed.
8. for reinforcing the method for steel pile casting stability when a kind of drilling construction, it is characterised in that: its step includes:
A, each grouting pipe (2) is welded on to the lateral wall of steel pile casting (1), is put into a reality into every grouting pipe (2)
Core bar (9) makes the end (10) of the solid hopkinson bar (9) be stuck in the upper opening of corresponding grouting pipe (2), in each end (10) top surface
A pressure sensor (5) is placed, and screws an inner thread sleeve on the external screw thread of every grouting pipe (2) upper end
(11)；
B, steel pile casting (1) main part is sunk into the soil body with vibration hammer or Static pressure pile driver；During this, inner thread sleeve (11)
Pressure ring (12), which pushes end (10) and solid hopkinson bar (9), each pressure sensor (5) through pressure sensor (5), can measure every note
The soil body resistance that slurry conduit (2) bottom end is subject to；
C, each inner thread sleeve (11) are unscrewed, are taken away pressure sensor (5), and extract solid hopkinson bar out from grouting pipe (2)
(9)；The reading or each pressure sensor (5) for manually acquiring each pressure sensor (5) at this time report reading to main control
Device；
D, according to the reading of the pressure sensor (5) of each grouting pipe (2), the unwrapping wire of the compensation each rope sheave (6) of setting is long
Degree, reading is bigger, and unwrapping wire length is shorter, and it is bigger to read smaller unwrapping wire length；And the corresponding plug (8) of each rope sheave (6) is put into
In corresponding grouting pipe (2)；
E, every grouting pipe (2) upper opening is in charge of (4) with a defeated slurry to dock, synchronizes and each grouting pipe (2) is perfused
Cement slurry；Cement slurry impacts downwards plug (8), and corresponding wirerope (7) are exceptionally straight, and cement slurry is from being higher than each of plug (8)
Defeated slurry hole (3) is overflowed, and with surrounding soil bonding and reinforcement, forms different reinforcing height along the circumferential each node of steel pile casting (1), and
The reinforcing height of each circumferential direction node and the unwrapping wire length of each plug (8) are coincide one by one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910827613.5A CN110528516B (en) | 2019-09-03 | 2019-09-03 | Device and method for enhancing stability of steel casing during hole forming construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910827613.5A CN110528516B (en) | 2019-09-03 | 2019-09-03 | Device and method for enhancing stability of steel casing during hole forming construction |
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| Publication Number | Publication Date |
|---|---|
| CN110528516A true CN110528516A (en) | 2019-12-03 |
| CN110528516B CN110528516B (en) | 2021-01-15 |
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| CN208830315U (en) * | 2018-06-11 | 2019-05-07 | 中铁开发投资集团有限公司 | A kind of subway tunnel soil layer construction grouting pipe |
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| CN110528516B (en) | 2021-01-15 |
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Address after: 315800 Xingnong building, Ningbo Free Trade Zone, Zhejiang Province Applicant after: Zhejiang Yitong Special Foundation Engineering Co.,Ltd. Address before: 315800 Xingnong building, Ningbo Free Trade Zone, Zhejiang Province Applicant before: ZHEJIANG YITONG FOUNDATION ENGINEERING Co.,Ltd. |
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