CN209555994U - Orientation isolation soil mass displacement at the deep layer high pressure gas stanchion - Google Patents
Orientation isolation soil mass displacement at the deep layer high pressure gas stanchion Download PDFInfo
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- CN209555994U CN209555994U CN201822082760.8U CN201822082760U CN209555994U CN 209555994 U CN209555994 U CN 209555994U CN 201822082760 U CN201822082760 U CN 201822082760U CN 209555994 U CN209555994 U CN 209555994U
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Abstract
The utility model relates to orient isolation soil mass displacement at the deep layer high pressure gas stanchion, including High pressure air pole, system operatio box and air compressor machine；High pressure air pole includes the side A high-pressure gasbag, the side B high-pressure gasbag, intermediate bulkhead and terminal pad；High pressure air pole upper and lower side is equipped with terminal pad, and every section High pressure air pole is connected by terminal pad；The side A high-pressure gasbag is identical as the side B high-pressure gasbag structure, and the two is separated by intermediate bulkhead；Soil pressure sensor is housed on the outside of high-pressure gasbag, displacement meter is housed inside the high-pressure gasbag of the side A；Pipe passage is equipped in intermediate bulkhead, the gas tube in high-pressure gasbag enters pipe passage by gas tube orifice, is equipped with gas-tpe fitting at the top of the terminal pad of upper end.The beneficial effects of the utility model are: the utility model, which is used, provides pressure and displacement in high-pressure gasbag, soil mass displacement at the deep layer caused by excavation of foundation pit can be eliminated in real time by automated system；Utility model device may be reused, and relatively economical and environmentally friendly, while will not influence foundation pit normal construction.
Description
Technical field
The utility model relates to a kind of orientations, and soil mass displacement at the deep layer high pressure gas stanchion is isolated, and belong to the protection of foundation pit peripheral environment
Field.
Background technique
With the process of urbanization, city underground engineering is also more and more, and urban land is nervous in addition, the ring on foundation pit periphery
Border condition becomes to become increasingly complex, and foundation pit is also increasingly strict on the deformation controlling standards of influence produced by surrounding enviroment.It is existing
Control technology in used passive area generally comprises soil stabilization in foundation pit, foundation pit sectional is excavated, increases building enclosure
The measures such as rigidity.However these measures can dramatically increase cost, extend the duration, while lacking flexibility, to Deformation control requirement
High situation is difficult to meet, and not deformation caused by dynamic control excavation of foundation pit.Active region setting isolation pile also can be
Reduce to a certain extent and cheat outer land movement, but is not able to satisfy the control requirement of micro-strain.
The theory that domestic and foreign scholars design from isolation pile proposes the design of isolation pile according to the principle of conceptual design
Practical calculation method, effective control measure and construction in it should be noted that the problem of, it is believed that isolation pile it is correct be arranged can reduce
The generation of qualitative problems of construction, and think that isolation pile should not be extricated oneself from a predicament and brace oneself up to action a form using immersed tube.Isolation pile is in subway engineering, foundation pit
It is widely applied in engineering and foundation treatment engineering, some of them engineering is more successful, some engineerings do not obtain ideal effect then
Fruit.Isolation pile, which as one kind is effectively protected measure and obtains comparing in Metro Deep Excavation engineering, to be widely applied, still
Still lack the theoretical research of system and the understanding of regularity to its action principle at present.When isolation pile plays buffer action, though
Say soil body movement be because of, but its but restriction by the shape of stake, quantity and arrangement, thus must by one scholar's system of stake as
Entirety considers.So the interaction between research stake, soil just seems increasingly important for isolation pile.It is existing to grind
The deformation in the mechanical characteristic or concern isolation pile engineering of digging process stake is studied carefully or pays close attention to, without simultaneously to its stress
Mechanism of action system research.In fact, Deformation control should place above the other things for isolation pile engineering, and the mechanics of stake is special
Property is also extremely important, can provide judging basis for the optimization design of pile body.
Although traditional isolation pile is a kind of can will to close on the foundation stress that engineering activity respectively generates and keep apart
Pile foundation component makes its non-overlapping and to influence each other, oneself, which turns out to be, in practice a kind of effective has deformation controlling method.In
Under the conditions of soft viscous foundation, in order to eliminate influence of the new building to adjacent old building uneven settlement of foundation, using isolation
Stake technology is a kind of reliable technical measures.But to the soil body within the scope of certain depth, horizontal displacement is having isolation pile feelings
Increase instead under condition, for isolation pile, to this part soil body, there are horizontal direction " draws " for this.If outside foundation pit, there are existing undergrounds
Just within the scope of this, tunnel horizontal displacement can instead may be than no isolation because of " draw " of isolation pile for tunnel and tunnel
Stake Shi Zeng great, isolation pile are unfavorable instead to control tunnel deformation.For the deficiency of traditional isolation pile method, propose a kind of orientation every
From soil mass displacement at the deep layer high pressure gas stanchion.
Utility model content
The purpose of the utility model is to overcome deficiencies in the prior art, and it is high to provide a kind of orientation isolation soil mass displacement at the deep layer
It calms the anger stanchion.
Soil mass displacement at the deep layer high pressure gas stanchion, including High pressure air pole, system operatio box and air compressor machine is isolated in this orientation.It is high
Column of calming the anger includes the side A high-pressure gasbag, the side B high-pressure gasbag, intermediate bulkhead and terminal pad.High pressure air pole upper and lower side is equipped with terminal pad,
Every section High pressure air pole is connected by terminal pad.The side A high-pressure gasbag is identical as the side B high-pressure gasbag structure, the two by intermediate bulkhead every
It opens.Soil pressure sensor is housed on the outside of high-pressure gasbag, displacement meter is housed inside the high-pressure gasbag of the side A.Pipeline is equipped in intermediate bulkhead
Channel, the gas tube in high-pressure gasbag enter pipe passage by gas tube orifice, are equipped with gas-tpe fitting at the top of the terminal pad of upper end.
Every section High pressure air pole connects automated system by escape pipe, and automated system is placed in system operatio box.Automated system packet
Include pressure valve, pressure gauge, multi-tiled display instrument, pressure regulator, displacement receiving instrument and soil pressure receiving instrument.Pressure valve connection is empty
Press, multi-tiled display instrument connect pressure gauge, displacement receiving instrument and soil pressure receiving instrument.Pressure regulator includes transmitter, straight
Galvanic electricity source, load and ammeter, pressure regulator are powered by DC power supply, and value can be shown by ammeter, by transmitter reality
The control of existing different loads.
The diameter of the High pressure air pole is 100~400mm, and every segmental height is 2~3m.Since excavation of foundation pit is for difference
The size of depth land movement influences difference, accurately to control the length that soil mass displacement at the deep layer just needs to minimize high-pressure gasbag
Degree, but in order to reduce the connection work in work progress, thus it is possible to vary the length of High pressure air pole.
The length of the side A high-pressure gasbag and the side B high-pressure gasbag should be slightly smaller than the length of every section High pressure air pole, the side A high pressure
The length of air bag and the side B high-pressure gasbag is preferably 1.8~2.8m.Air bag uses synthetic rubber, natural rubber and fabric reinforcement sulphur
It is made after change, existing good resisting expansion strength, and flexible, flexibility, 0~800kPa of operating pressure.Reach high pressure in inflation
Afterwards, air bag volume expansion is to obstruct the displacement for making up deep soil.High-pressure gasbag two sides are respectively arranged with soil pressure sensor, measure
Range is 0~2000kPa, and the measuring range of displacement meter is 0~100mm, and the lateral pressure that can be used to observe deep soil becomes
Change the change in displacement with deep soil, by automated system feedback to multi-tiled display instrument.
The intermediate bulkhead separates two air bags, it is therefore an objective to orientation barrier soil mass displacement at the deep layer.Intermediate bulkhead uses PVC
Plate, 5~10mm of thickness, 90~380mm of width, while the pipe passage inside intermediate bulkhead be High pressure air pole in signal wire and
Gas tube provides channel.
There are bolt hole and lute in the terminal pad, every section High pressure air pole is bolted.Terminal pad is straight
Diameter is 100~400mm, and the pore size of bolt hole meets the bolt requirement of M8~M16.Lute prevents underground water from entering
In pipe passage, the transmission of signal is influenced.
The escape pipe is connected to the gas-tpe fitting on High pressure air pole, and escape pipe is high pressure PU tracheae, 8~12mm of aperture,
5~12mm of wall thickness, 10~12kg of operating pressure.
The pressure valve is diaphragm type or inner spring piston-type pressure valve, nominal pressure: 1.0MPa~2.0MPa, shell examination
Test pressure: P=1.5PN, seal test pressure: P=1.1PN, 0.10~1.2MPa of regulating valve.
The multi-tiled display instrument is equipped with 16~32 Measurement channels, independent to show, elementary error is better than ± 0.2%
FS, 16 A/D converters, measuring speed 0.2 second/every channel.
The pressure regulator adjustable pressure range is -0.1MPa~10MPa, environment temperature -30~80 DEG C, contact capacity
24VDC/220VAC, accuracy class 0.1%, long-time stability≤± 0.2%FS/, degree of protection IP65.
The power of the air compressor machine: 75~185kw, discharge capacity: 10~34m3/ min, pressure at expulsion: 0.8~1.25MPa.
The beneficial effects of the utility model are:
(1) the utility model, which is used, provides pressure and displacement in high-pressure gasbag, can eliminate in real time base by automated system
Soil mass displacement at the deep layer caused by hole is excavated.Utility model device may be reused, relatively economical and environmentally friendly, while not
It will affect foundation pit normal construction.
(2) the utility model is real-time to adjust high-pressure gasbag pressure by acquiring various data, can more accurate reasonable resistance
Every the unfavorable displacement that excavation of foundation pit generates, the deformation for cheating outer structures, which can be played, timely and effectively to be protected.
Detailed description of the invention
Fig. 1 is the schematic diagram of the High pressure air pole of orientation isolation soil mass displacement at the deep layer；
Fig. 2 is the schematic diagram of system operatio box；
Fig. 3 is pressure regulator schematic diagram.
Description of symbols: 1 --- High pressure air pole；2 --- the side A high-pressure gasbag；3 --- the side B high-pressure gasbag；4 --- in
Spacing board；5 --- pipe passage；6 --- gas tube orifice；7 --- displacement meter；8 --- soil pressure sensor；9 --- bolt hole；
10 --- bolt；11 --- lute；12 --- terminal pad；13 --- gas-tpe fitting；14 --- automated system；
15 --- pressure valve；16 --- escape pipe；17 --- pressure gauge；18 --- air compressor machine；19 --- multi-tiled display instrument；
20 --- pressure regulator；21 --- displacement receiving instrument；22 --- soil pressure receiving instrument；23 --- system operatio box；24 --- become
Send device；25 --- DC power supply；26 --- load；27 --- ammeter.
Specific embodiment
The utility model is described further below with reference to embodiment.The explanation of following embodiments is only intended to help to manage
Solve the utility model.It should be pointed out that for those skilled in the art, not departing from the utility model principle
Under the premise of, several improvements and modifications can be made to this utility model, these improvement and modification also fall into the utility model
In scope of protection of the claims.
Embodiment 1
It is the design of High pressure air pole 1 first, High pressure air pole 1 is mainly comprising the side A high-pressure gasbag 2, the side B high-pressure gasbag 3, centre
Partition 4 and it is vertically connected with disk 12.Soil pressure sensor 8 is housed on the outside of high-pressure gasbag, displacement meter is housed inside the side A high-pressure gasbag 2
7.High-pressure gasbag 3 structure in the side B is identical as the side A high-pressure gasbag 2, is separated by intermediate bulkhead 4.Pipe passage is equipped in intermediate bulkhead 4
5, the gas tube in high-pressure gasbag enters pipe passage 5 by gas tube orifice 6, and gas-tpe fitting is equipped at the top of terminal pad 12
13.There are bolts hole 9 and lute 11 in terminal pad 12, every section High pressure air pole 1 can be linked together by bolt 10.
Lute 11 can obstruct underground water and enter inside pipe passage 5.
System operatio box 23 is made of the automated system 14 of every section High pressure air pole 1.Automated system 14 includes pressure
Table 17, pressure regulator 20, pressure valve 15, displacement receiving instrument 21, soil pressure receiving instrument 22 and multi-tiled display instrument 19, wherein pressing
Power modulator 20 is powered by DC power supply 25, and value can be shown by ammeter 27, realizes different loads 26 by transmitter 24
Control.Escape pipe 16 is connected to the gas-tpe fitting 13 on High pressure air pole 1, and pressure valve 15 links together with air compressor machine 18.Automatically
Change system 14 is and initial by monitoring soil lateral pressure, the variation of soil body direction finding displacement and the pressure in the high-pressure gasbag of two sides
After collection value comparison, the pressure in two high-pressure gasbags is automatically adjusted, to realize deep soil position caused by isolation excavation of foundation pit
It moves.This set system can guarantee that High pressure air pole 1 realizes automatic Regulation, and realize that the data of monitoring are equal with initial set value maintenance
's.The utility model can timely and effectively cut off excavation of foundation pit and cause the displacement for cheating the outer different depth soil body, reach protection foundation pit
The effect of ambient enviroment.
In this embodiment, the escape pipe 16 is high pressure PU tracheae, 8~12mm of aperture, 5~12mm of wall thickness, work pressure
10~12kg of power.The pressure valve 15 be diaphragm type or inner spring piston-type pressure valve, nominal pressure: 1.0MPa~2.0MPa,
Seal test pressure: P=1.5PN, seal test pressure: P=1.1PN, 0.10~1.2MPa of regulating valve.The multi-tiled display
Instrument 19 is equipped with 16~32 Measurement channels, independent to show, elementary error is better than ± 0.2%FS, and 16 A/D converters are surveyed
Measure speed 0.2 second/every channel.The 20 adjustable pressure range of pressure regulator be -0.1MPa~10MPa, environment temperature -30~
80 DEG C, contact capacity 24VDC/220VAC, accuracy class 0.1%, long-time stability≤± 0.2%FS/, degree of protection
IP65.The power of the air compressor machine 18: 75~185kw, discharge capacity: 10~34m3/ min, pressure at expulsion: 0.8~1.25MPa.
In this embodiment, the diameter of High pressure air pole 1 is 100~400mm, and every segmental height is 2~3m, and every segment can be with
It is connected by terminal pad 12.Since size of the excavation of foundation pit for different depth land movement influences difference, accurately to control
Soil mass displacement at the deep layer just needs to minimize the length of high-pressure gasbag, but in order to reduce the connection work in work progress, can be with
Change the length of High pressure air pole 1.
In this embodiment, the length of the side A high-pressure gasbag 2 and the side B high-pressure gasbag 3 should be slightly smaller than every segment High pressure air pole 1
Length, preferably 1.8~2.8m, air bag using synthetic rubber, natural rubber and fabric reinforcement vulcanization after be made, it is existing very well
Resisting expansion strength, and flexible, flexibility, 0~800kPa of operating pressure.After inflation reaches high pressure, air bag volume expansion resistance
Every the displacement for making up deep soil.Soil pressure sensor 8 is equipped on the outside of high-pressure gasbag, measuring range is 0~2000kPa,
7 measurement range of displacement meter is 0~100mm, can be used to observe the displacement of the lateral pressure variation and deep soil of deep soil
Variation, by the feedback to multi-tiled display instrument 19 of automated system 14.
In this embodiment, intermediate bulkhead 4 plays the role of separating two air columns, it is therefore an objective to orientation barrier deep soil
Displacement.Intermediate bulkhead 4 uses PVC board, 5~10mm of thickness, 90~380mm of width, while by pipe passage inside intermediate bulkhead 4
5 in High pressure air pole 1 signal wire and gas tube channel is provided.
In this embodiment, 12 diameter of terminal pad is 100~400mm, has reserved bolt hole 9 thereon, and pore size meets
The bolt requirement of M8~M16, is linked together every section High pressure air pole 1 by bolt.Terminal pad 12 is equipped with lute 11
Can play prevents underground water from entering in pipe passage 5, influences the transmission of signal.
Embodiment 2
The construction method of the orientation isolation soil mass displacement at the deep layer high pressure gas stanchion, comprising the following steps:
1, the underground structure protected as needed determines the position for needing to set up high pressure gas stanchion with a distance from foundation pit periphery
Double dislocation arrangement or quincuncial arrangement can be used in son and the corresponding distribution method of high pressure gas stanchion.
2, before excavation of foundation pit, needs are determined according to the depth of ground-connecting-wall or the depth of protected underground structure
The depth of drilling, then drilling machine is in place, starts to drill.
3, after the completion of drilling, start to transfer High pressure air pole 1 at once, after transferring a section, pass through bolt in aperture and next section
Connection, until meeting the requirements.After the completion of High pressure air pole 1 is transferred, by every section of initial soil body soil lateral pressure of calculating to every
Section High pressure air pole 1 is inflated, and guarantee is not in collapse hole.
4, the variation of the pressure change in 1 outside of observation High pressure air pole and internal displacement, passes through 18 appropriate adjustment gas of air compressor machine
Intracapsular pressure size is recorded at this time so that the displacement in the high-pressure gasbag of two sides is identical, and no longer occurs big variation
Pressure size, outside soil body measuring pressure in air bag and the shift value on displacement meter.
5, after excavation of foundation pit, due to passive area off-load, cause the soil body of active region on the outside of foundation pit that can generate and answer accordingly
The field of force and displacement field the phenomenon that pressure reduction, displacement increases can then occur now close to the side the A high-pressure gasbag 2 of foundation pit side first,
And then cause the pressure and change in displacement of the side B high-pressure gasbag 3, at this moment pressure regulator 20 can be automatic according to the numerical value of initial acquisition
Carry out air pressure adjustment, displacement and air bag until the pressure recovery in the air bag of two sides to initial value, and in the side B high-pressure gasbag 3
The lateral soil pressure value in outside is close with initial value.The pressure size in the high-pressure gasbag of two sides by adjusting different depth repeatedly, makes
The displacement obtained in the side the B high-pressure gasbag 3 far from foundation pit maintains initial value, and the lateral soil pressure on the outside of air bag also connects with initial value
Closely.The variation that the soil body of the High pressure air pole pile group in 3 outside of the side B high-pressure gasbag is not subjected to displacement is ensured that in this way.
6, excavation of foundation pit terminates, and after the completion of underground structure, the air being vented in high-pressure gasbag takes out High pressure air pole 1, so as to
Recycling.The hole left is filled in time with biliquid cement slurry.
Claims (8)
1. soil mass displacement at the deep layer high pressure gas stanchion is isolated in a kind of orientation, which is characterized in that including High pressure air pole (1), system operatio
Box (23) and air compressor machine (18)；High pressure air pole (1) include the side A high-pressure gasbag (2), the side B high-pressure gasbag (3), intermediate bulkhead (4) and
Terminal pad (12)；High pressure air pole (1) upper and lower side is equipped with terminal pad (12), and every section High pressure air pole (1) is connected by terminal pad (12)；
The side A high-pressure gasbag (2) is identical as the side B high-pressure gasbag (3) structure, and the two is separated by intermediate bulkhead (4)；It is equipped on the outside of high-pressure gasbag
Soil pressure sensor (8), the side A high-pressure gasbag (2) is internal to be equipped with displacement meter (7)；Pipe passage (5) are equipped in intermediate bulkhead (4),
Gas tube in high-pressure gasbag is entered pipe passage (5) by gas tube orifice (6), and tracheae is equipped at the top of the terminal pad (12) of upper end
Connector (13)；By escape pipe (16) connection automated system (14), automated system (14) is placed in is every section High pressure air pole (1)
In system operating case (23)；Automated system (14) includes pressure valve (15), pressure gauge (17), multi-tiled display instrument (19), pressure
Power modulator (20), displacement receiving instrument (21) and soil pressure receiving instrument (22)；Pressure valve (15) connects air compressor machine (18), and multichannel is aobvious
Show instrument (19) connection pressure gauge (17), displacement receiving instrument (21) and soil pressure receiving instrument (22)；Pressure regulator (20) includes becoming
Send device (24), DC power supply (25), load (26) and ammeter (27).
2. soil mass displacement at the deep layer high pressure gas stanchion is isolated in orientation according to claim 1, which is characterized in that the high pressure gas
The diameter of column (1) is 100~400mm, and every section height is 2~3m.
3. soil mass displacement at the deep layer high pressure gas stanchion is isolated in orientation according to claim 1, which is characterized in that the side A is high
The length of pressuring gasbag (2) and the side B high-pressure gasbag (3) is less than the length of every section High pressure air pole (1), the side A high-pressure gasbag (2) and the side B
The length of high-pressure gasbag (3) is 1.8~2.8m；Air bag is made after being vulcanized using synthetic rubber, natural rubber and fabric reinforcement
At.
4. soil mass displacement at the deep layer high pressure gas stanchion is isolated in orientation according to claim 1, which is characterized in that the middle interval
Plate (4) uses PVC board, 5~10mm of thickness, 90~380mm of width.
5. soil mass displacement at the deep layer high pressure gas stanchion is isolated in orientation according to claim 1, which is characterized in that the terminal pad
(12) there are bolt hole (9) and lute (11) on, every section High pressure air pole (1) is connected by bolt (10)；Terminal pad
(12) diameter is 100~400mm, and bolt hole (9) is suitable for the bolt of pore size M8~M16.
6. soil mass displacement at the deep layer high pressure gas stanchion is isolated in orientation according to claim 1, which is characterized in that the escape pipe
(16) gas-tpe fitting (13) on High pressure air pole (1) is connected, escape pipe (16) is high pressure PU tracheae, 8~12mm of aperture, wall thickness 5
~12mm.
7. soil mass displacement at the deep layer high pressure gas stanchion is isolated in orientation according to claim 1, which is characterized in that the pressure valve
It (15) is diaphragm type or inner spring piston-type pressure valve.
8. soil mass displacement at the deep layer high pressure gas stanchion is isolated in orientation according to claim 1, which is characterized in that the multichannel
Display instrument (19) is equipped with 16~32 Measurement channels.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822082760.8U CN209555994U (en) | 2018-12-12 | 2018-12-12 | Orientation isolation soil mass displacement at the deep layer high pressure gas stanchion |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822082760.8U CN209555994U (en) | 2018-12-12 | 2018-12-12 | Orientation isolation soil mass displacement at the deep layer high pressure gas stanchion |
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|---|---|
| CN209555994U true CN209555994U (en) | 2019-10-29 |
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ID=68303089
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822082760.8U Active CN209555994U (en) | 2018-12-12 | 2018-12-12 | Orientation isolation soil mass displacement at the deep layer high pressure gas stanchion |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109457737A (en) * | 2018-12-12 | 2019-03-12 | 宁波大学 | A kind of orientation isolation soil mass displacement at the deep layer high pressure gas stanchion and construction method |
| CN116298211A (en) * | 2023-05-15 | 2023-06-23 | 西南石油大学 | Test device and method for simulating excavation erosion of water-bearing stratum in near tunnel |
-
2018
- 2018-12-12 CN CN201822082760.8U patent/CN209555994U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109457737A (en) * | 2018-12-12 | 2019-03-12 | 宁波大学 | A kind of orientation isolation soil mass displacement at the deep layer high pressure gas stanchion and construction method |
| CN109457737B (en) * | 2018-12-12 | 2023-08-29 | 宁波大学 | Directional isolation deep soil displacement high-pressure air column pile and construction method |
| CN116298211A (en) * | 2023-05-15 | 2023-06-23 | 西南石油大学 | Test device and method for simulating excavation erosion of water-bearing stratum in near tunnel |
| CN116298211B (en) * | 2023-05-15 | 2023-08-11 | 西南石油大学 | Test device and method for simulating excavation erosion of water-bearing stratum in near tunnel |
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