CN106759416A - Pneumatic caisson sinking stage adjustable airbag apparatus and construction method - Google Patents
Pneumatic caisson sinking stage adjustable airbag apparatus and construction method Download PDFInfo
- Publication number
- CN106759416A CN106759416A CN201710153962.4A CN201710153962A CN106759416A CN 106759416 A CN106759416 A CN 106759416A CN 201710153962 A CN201710153962 A CN 201710153962A CN 106759416 A CN106759416 A CN 106759416A
- Authority
- CN
- China
- Prior art keywords
- air bag
- sinkbox
- bottom plate
- air
- caisson
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D23/00—Caissons; Construction or placing of caissons
- E02D23/04—Pneumatic caissons
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D23/00—Caissons; Construction or placing of caissons
- E02D23/08—Lowering or sinking caissons
- E02D23/10—Caissons filled with compressed air
Abstract
The present invention relates to a kind of pneumatic caisson sinking stage adjustable airbag apparatus and construction method, pre-buried several sleeve pipes in Bottom plate of sinkbox, each sleeve pipe insert air-filled pore, base plate lower section by air-filled pore with can inflation/deflation airbags, air-filled pore top connection inflation system and control valve.Air bag top jacking Bottom plate of sinkbox, bottom is by substrate support.By adjusting air bag pressure autonomous control caisson sinking speed, the operating modes such as protrusion-dispelling is heavy are adapted to, and caisson can independently be rectified a deviation in real time, accurate adjustment control caisson sinking attitude.During sinking construction, surrounding soil is disturbed small.With reference to actual conditions, bladder support can be taken and couch and erect two kinds of different supporting way.When caisson connects making high, adjustable air bag pressure plays certain supporting role；During correction, uniform counter-force under Bottom plate of sinkbox can be formed by adjusting air bag pressure, from main regulation, high accuracy is rectified a deviation；When caisset sinks, releasable the inside gas, air bag can with and shrink, be not take up studio space.
Description
Technical field
Sink the present invention relates to the pneumatic caisson device that a kind of underground structure is built, especially a kind of controllable pneumatic caisson
The device and construction method of stage attitude.
Background technology
Pneumatic caisson technology is the engineering method for building underground structure and deep foundation, is sunk by air pressure balance Water And Earth Pressures
Surrounding enviroment compared with conventional construction method, are influenceed small by construction.France applies gas in coal mine shaft first within 1841
Air pressure caisson working, China introduced the technology in 1894 in bridge foundation construction.In 50 ~ sixties of 20th century, Shanghai City
Foundation engineering company is applied in science of bridge building, water supply and sewage work, Tunnel Engineering.With the proposition of 12 planning
With the rapid emergence of Urban Underground Space Excavation, urban architecture is more and more intensive, and surrounding environment also becomes increasingly complex, while city
Beneath spatial development increasingly becomes the trend of urban development.Foundation ditch technology constantly to " depth is deeper ", face " environment is more multiple
It is miscellaneous " direction develops.
Excavated in down town building compact district and build deep underground space, often face that construction site is narrow and small, week
Enclose the numerous situation of critical facility；Meanwhile, underground construction often causes the reduction of level of ground water when excavating, and then causes week
The depression of exclosure base, may cause collapsing for around ground when serious, to neighbouring buildings or structures and underground urban operating mechanism band
Carry out serious influence；In addition, the construction of urban district subway tunnel, underground super expressway, common trench and vertical shaft ventilating shaft system engineering
Suffer from the limitation of each side.By contrast, pneumatic caisson engineering method adapts to above-mentioned specific demand in many cases, because
And there is irreplaceable competitiveness in engineer applied and prospect is widely applied.
During Pneumatic Caisson Construction, control of sinking is the main points of pneumatic caisson control.In caisson sinking mining process often
It is unstable, it is susceptible to Lack of support, prominent heavy, inclination, slides excessive deformation etc..With the increase of depth, control of sinking is difficult
Degree is also bigger.How the stabilization of caisson sinking construction stage to be ensured, protrusion-dispelling is heavy with to incline be a disaster in Pneumatic Caisson Construction
Topic.
The content of the invention
The present invention is to solve unstable in pneumatic caisson sinking mining process, Lack of support be susceptible to, dashed forward and is sunk, inclines
Tiltedly, the technical problems such as excessive deformation are slided, and a kind of pneumatic caisson sinking stage adjustable air bag corollary apparatus and construction is provided
Method.
To solve above-mentioned purpose, the technical scheme is that：A kind of pneumatic caisson sinking stage adjustable air bag is supporting
Device, including air bag, air-filled pore, sleeve pipe, pneumatic control valve, ventilating control system, pre-buried several sleeve pipes in Bottom plate of sinkbox, often
Individual sleeve pipe inserts air-filled pore, and air bag is provided between Bottom plate of sinkbox bottom and substrate, and air bag is connected with Bottom plate of sinkbox lower section air-filled pore,
Air-filled pore above Bottom plate of sinkbox is connected by pneumatic control valve with inflation system, by inflation system and pneumatic control valve to air bag
Inflation, makes air bag top jacking Bottom plate of sinkbox, bottom by substrate support, boost in pressure by air bag with reduce Bottom plate of sinkbox mark
Height, autonomous control Bottom plate of sinkbox subsidence velocity, it is ensured that Bottom plate of sinkbox sinking working condition safety.
Described sleeve pipe sets sealing ring with Bottom plate of sinkbox upper and lower interface junction；Periphery of spigot welds seal ring.
The air bag uses and couches or erect supporting way, for different scales and the caisson of operating room's requirement for height.
A kind of construction method of use pneumatic caisson sinking stage adjustable air bag corollary apparatus, it is characterised in that its step
Suddenly it is：
1）Calculate the number of air bag arrangement
Single bladder support power T=air pressure p × contact area S；
Then need the number N=of air bag（G-f）÷ T, wherein：G conducts oneself with dignity for caisson, and f is side friction；
2）Caisset service sleeve on demand is combined when Bottom plate of sinkbox is constructed, sleeve pipe is installed and notes periphery welding seal ring；
3）Be inserted into air-filled pore in sleeve pipe, to ensure air-tightness, with Bottom plate of sinkbox upper and lower interface at set sealing ring；
4）Air-filled pore base plate lower section by air-filled pore with can inflation/deflation airbags, upper end is connected with inflation system, and centre sets
Put pneumatic control valve, air bag top jacking Bottom plate of sinkbox, bottom is by substrate support；
5）Air bag can combine different caisset space requirements, can take and couch or erect two kinds of different supporting way；
6）When caisson is increased and the sinking stage can carry out inflation/deflation to air bag by inflation system, pneumatic control valve, air bag is adjusted
Interior pressure and height, the prominent heavy, tilt phenomenon of caisson is prevented to provide counter-force.
When without using air bag, releasable the inside gas, air bag can with and shrink, be not take up studio space, operate
Flexibly.
The gas is high-pressure inert gas.
The beneficial effects of the invention are as follows：
（1）By adjusting air bag pressure autonomous control caisson sinking speed, the operating modes such as protrusion-dispelling is heavy are adapted to, and can be real-time to caisson
Independently rectified a deviation, accurate adjustment control caisson sinking attitude.It is small to surrounding soil disturbance during sinking construction, favorably
In the construction of closely environmental condition.Using the adjustable caisson attitude of airbag apparatus, unnecessary correction detour, short time limit are not walked
Short time limit；Caisson tank wall can do thin simultaneously, be not required to consider to increase deadweight overcome sinking difficult.
（2）It is autonomous that air bag size and location, flexible arrangement are set with reference to caisset size.
（3）Air bag and substrate contact area are big, low to ground requirement for bearing capacity, and air bag is effective to solve from main regulation control
The problems such as soft soil foundation bearing capacity of having determined is not enough.
（4）When caisset sinks, releasable the inside gas, air bag can with and shrink, be not take up studio space.
Brief description of the drawings
Fig. 1 is that the pneumatic caisson of the invention stage adjustable air bag corollary apparatus that sink couch structure sectional view；
Fig. 2 is that pneumatic caisson sinking stage adjustable air bag corollary apparatus of the invention erect structure sectional view；
Fig. 3 is that the pneumatic caisson of the invention stage adjustable air bag corollary apparatus that sink couch use state sectional view；
Fig. 4 is that pneumatic caisson sinking stage adjustable air bag corollary apparatus of the invention erect use state sectional view.
Specific embodiment
Below in conjunction with the accompanying drawings with specific implementation, the present invention is expanded on further.
Such as Fig. 1, shown in 2, a kind of pneumatic caisson sinking stage can adjust airbag apparatus, including air bag 1, air-filled pore 2, sleeve pipe
3rd, sealing ring 4, seal ring 5, pneumatic control valve 6, ventilating control system 7.
When Bottom plate of sinkbox 8 is constructed, with reference to the structure size of Bottom plate of sinkbox 8 and the sleeve pipe 3 of the pre-buried in good time quantity of calculating, each
Sleeve pipe 3 is inserted into air-filled pore 2, and air bag 1, air bag 1 and Bottom plate of sinkbox lower section air-filled pore are set between the bottom of Bottom plate of sinkbox 8 and substrate
2 are connected, and the air-filled pore 2 of the top of Bottom plate of sinkbox 8 is connected by pneumatic control valve 6 with inflation system 7, by inflation system 7 and air pressure
Control valve 6 is inflated to air bag 1, makes the top jacking Bottom plate of sinkbox 8 of air bag 1, and bottom is carried by substrate support by the pressure of air bag 1
Rise and reduce the absolute altitude of Bottom plate of sinkbox 8, the subsidence velocity of autonomous control Bottom plate of sinkbox 8, it is ensured that the sinking working condition safety of Bottom plate of sinkbox 8.Set
Pipe 3 sets sealing ring 4 with the upper and lower interface junction of Bottom plate of sinkbox 8；Weld seal ring 5 in the periphery of sleeve pipe 3.
Air bag 1 arrange and number computational methods：
The support force T=air pressure p of single air bag 1 × contact area S；
The number N=G-f ÷ T of air bag 1 are then needed, wherein：G conducts oneself with dignity for caisson, and f is side friction；
Simultaneously for the caisson of different scales and operating room's requirement for height, with reference to actual conditions, the support of air bag 1 can take couch and
Erect two kinds of different supporting way.
It is specific to install and implementation：
1. caisset service sleeve 3 on demand are combined when, Bottom plate of sinkbox 8 is constructed, sleeve pipe 3 is installed and notes periphery welding seal ring 5；
2., be inserted into air-filled pore 2 in sleeve pipe 3, to ensure air-tightness, with the upper and lower interface of Bottom plate of sinkbox 8 at set sealing ring 4.
3. the lower section of air-filled pore 3 and Bottom plate of sinkbox 8 by air-filled pore 2 with can the air bag 1 of inflation/deflation be connected.Upper end and inflation are
System 7 is connected, middle setting pneumatic control valve 6, the top jacking Bottom plate of sinkbox 8 of air bag 1, and bottom is by substrate support.
4. air bag 1 can require with reference to the structure space of different Bottom plate of sinkbox 8, can take and couch（Fig. 3）And setting（Fig. 4）Two kinds
Different supporting way.
5. when Bottom plate of sinkbox 8 is increased and the sinking stage can carry out charge and discharge by inflation system 7, pneumatic control valve 6 to air bag 1
Gas, pressure and height in regulation air bag 1 prevent the phenomenons such as the prominent heavy, inclination of Bottom plate of sinkbox 8 to provide counter-force.
6. when without using air bag 1, releasable the inside gas, air bag can with and shrink, be not take up studio space,
Operation is flexible.
7. enough counter-force supports can be provided to ensure air bag 1, the optional ductility of its material is small, and intensity material high fills
Dress gas generally uses high-pressure inert gas.
Claims (6)
1. a kind of pneumatic caisson sinking stage adjustable air bag corollary apparatus, including air bag（1）, air-filled pore（2）, sleeve pipe（3）, gas
Pressure control valve（6）, ventilating control system（7）, it is characterised in that：Bottom plate of sinkbox（8）Interior pre-buried several sleeve pipes（3）, each set
Pipe（3）Insertion air-filled pore（2）, under Bottom plate of sinkbox（8）Air bag is provided between portion and substrate（1）, air bag（1）With Bottom plate of sinkbox（8）
Lower section air-filled pore（2）It is connected, Bottom plate of sinkbox（8）The air-filled pore of top（2）By pneumatic control valve（6）With inflation system（7）Phase
Even, by inflation system（7）And pneumatic control valve（6）To air bag（1）Inflation, makes air bag（1）Top jacking Bottom plate of sinkbox（8）, under
Portion by substrate support, by air bag（1）Boost in pressure with reduce Bottom plate of sinkbox（8）Absolute altitude, autonomous control Bottom plate of sinkbox（8）Under
Heavy speed, it is ensured that Bottom plate of sinkbox（8）Sinking working condition safety.
2. pneumatic caisson according to claim 1 sinks stage adjustable air bag corollary apparatus, it is characterised in that：The set
Pipe（3）Sealing ring is set with Bottom plate of sinkbox upper and lower interface junction（4）；Sleeve pipe（3）Weld seal ring in periphery（5）.
3. pneumatic caisson according to claim 1 sinks stage adjustable air bag corollary apparatus, it is characterised in that：The gas
Capsule（1）Using couching or erectting supporting way, for different scales and the caisson of operating room's requirement for height.
4. a kind of any described pneumatic caissons of use claim 1-3 sink the construction party of stage adjustable air bag corollary apparatus
Method, it is characterised in that its step is：
1）Calculate the number of air bag arrangement
Single bladder support power T=air pressure p × contact area S；
Then need the number N=of air bag（G-f）÷ T, wherein：G conducts oneself with dignity for caisson, and f is side friction；
2）Bottom plate of sinkbox（8）Caisset service sleeve on demand is combined during construction（3）, sleeve pipe（3）Install and notice that periphery welding stops
Water ring（5）；
3）In sleeve pipe（3）It is inserted into air-filled pore（2）, to ensure air-tightness, with Bottom plate of sinkbox（8）Sealing is set at upper and lower interface
Circle（4）；
4）Air-filled pore（3）Base plate lower section passes through air-filled pore（2）With can inflation/deflation air bag（1）It is connected, upper end and inflation system（7）
It is connected, middle setting pneumatic control valve（6）, air bag（1）Top jacking Bottom plate of sinkbox（8）, bottom is by substrate support；
5）Air bag（1）Different caisset space requirements can be combined, can be taken and be couched or erect two kinds of different supporting way；
6）Work as Bottom plate of sinkbox（8）Increase and the sinking stage can be by inflation system（7）, pneumatic control valve（6）To air bag（1）Carry out
Inflation/deflation, adjusts air bag（1）Interior pressure and height, Bottom plate of sinkbox is prevented to provide counter-force（8）Prominent heavy, tilt phenomenon.
5. construction method according to claim 4, it is characterised in that：When without using air bag（1）When, releasable the inside gas
Body, air bag can with and shrink, be not take up studio space, operation is flexible.
6. construction method according to claim 4, it is characterised in that：The gas is high-pressure inert gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710153962.4A CN106759416B (en) | 2017-03-15 | 2017-03-15 | Airbag apparatus and construction method is adjusted in the pneumatic caisson sinking stage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710153962.4A CN106759416B (en) | 2017-03-15 | 2017-03-15 | Airbag apparatus and construction method is adjusted in the pneumatic caisson sinking stage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106759416A true CN106759416A (en) | 2017-05-31 |
| CN106759416B CN106759416B (en) | 2019-02-19 |
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ID=58962810
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710153962.4A Active CN106759416B (en) | 2017-03-15 | 2017-03-15 | Airbag apparatus and construction method is adjusted in the pneumatic caisson sinking stage |
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| CN (1) | CN106759416B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109056772A (en) * | 2018-08-29 | 2018-12-21 | 中国铁建港航局集团有限公司 | One kind being applied to Large Precast Members quick-jacking device and method |
| CN110080599A (en) * | 2019-04-24 | 2019-08-02 | 四川南充电力设计有限公司 | The electric power pylon used based on power Transmission |
| CN110453734A (en) * | 2019-08-29 | 2019-11-15 | 山东建筑大学 | A kind of air bag jacking building inclination rectification method |
| CN113266030A (en) * | 2021-05-13 | 2021-08-17 | 武汉市市政建设集团有限公司 | Underwater bottom sealing construction method for deep well |
| CN113550343A (en) * | 2021-07-20 | 2021-10-26 | 江苏筑港建设集团有限公司 | Energy-saving caisson shipment gasbag atmospheric pressure wireless monitoring system |
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| CN103114603A (en) * | 2013-02-27 | 2013-05-22 | 上海市基础工程有限公司 | Air curtain resistance reducing and sinking assisting device utilized during sinking construction for sinking well |
| CN103243729A (en) * | 2013-05-10 | 2013-08-14 | 王炳贞 | Lifting method of large-scale caisson |
| CN104088289A (en) * | 2014-07-22 | 2014-10-08 | 上海市基础工程集团有限公司 | Pneumatic caisson lifting and sinking temporary buttress and construction method |
| CN104088290A (en) * | 2014-07-22 | 2014-10-08 | 上海市基础工程集团有限公司 | Pneumatic caisson adjustable lifting type hydraulic support platform in sinking process |
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| CN101508410A (en) * | 2009-03-09 | 2009-08-19 | 钟爱民 | Large-scale component jacking method |
| JP2012046902A (en) * | 2010-08-25 | 2012-03-08 | Daiho Constr Co Ltd | Pneumatic caisson and settling method of pneumatic caisson |
| CN103114603A (en) * | 2013-02-27 | 2013-05-22 | 上海市基础工程有限公司 | Air curtain resistance reducing and sinking assisting device utilized during sinking construction for sinking well |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109056772A (en) * | 2018-08-29 | 2018-12-21 | 中国铁建港航局集团有限公司 | One kind being applied to Large Precast Members quick-jacking device and method |
| CN110080599A (en) * | 2019-04-24 | 2019-08-02 | 四川南充电力设计有限公司 | The electric power pylon used based on power Transmission |
| CN110453734A (en) * | 2019-08-29 | 2019-11-15 | 山东建筑大学 | A kind of air bag jacking building inclination rectification method |
| CN113266030A (en) * | 2021-05-13 | 2021-08-17 | 武汉市市政建设集团有限公司 | Underwater bottom sealing construction method for deep well |
| CN113550343A (en) * | 2021-07-20 | 2021-10-26 | 江苏筑港建设集团有限公司 | Energy-saving caisson shipment gasbag atmospheric pressure wireless monitoring system |
| CN113550343B (en) * | 2021-07-20 | 2022-06-21 | 江苏筑港建设集团有限公司 | Energy-saving caisson shipment gasbag atmospheric pressure wireless monitoring system |
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| Publication number | Publication date |
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| CN106759416B (en) | 2019-02-19 |
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