CN109322318A - The hydraulic sink deviation-rectifying system of open caisson combined type adjustable counter balance - Google Patents
The hydraulic sink deviation-rectifying system of open caisson combined type adjustable counter balance Download PDFInfo
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- CN109322318A CN109322318A CN201811241711.2A CN201811241711A CN109322318A CN 109322318 A CN109322318 A CN 109322318A CN 201811241711 A CN201811241711 A CN 201811241711A CN 109322318 A CN109322318 A CN 109322318A
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- China
- Prior art keywords
- open caisson
- jack
- hydraulic
- counter balance
- deviation
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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
- E02D23/08—Lowering or sinking caissons
Abstract
The present invention relates to a kind of hydraulic sink deviation-rectifying systems of open caisson combined type adjustable counter balance, adjustable counter balance is evenly distributed with along open caisson outer wall surrounding on cushion cap, it is formed and a set of provides gravity open caisson mechanism vertically downwards by cushion cap self weight and adjustable counter balance, multiple bracket reaction frames are arranged in open caisson outer wall, the hydraulic punching jack of unidirectional self-lock is arranged in bracket reaction frame top, self-locking hydraulic punching jack connects cushion cap by steel strand wires, formed a set of open caisson surrounding respectively to classification partial pressure, open caisson height difference is adjusted, open caisson deviation rectification mechanism is assisted.The present invention is able to solve in well sinking difficulty, can be as needed using the sink system when subsidence factor is too small, on the basis of not increasing open caisson self weight, is increased the vertical down force of open caisson, is improved subsidence coefficient of sinking well.When height variation occurs in open caisson, pressure auxiliary correction can be applied to open caisson different zones by adjusting the hydraulic oil pressure of different zones jack.Adjustable balance can be applied to a variety of same type projects repeatedly.
Description
Technical field
The present invention relates to a kind of open caisson deviation rectification system, especially one kind to be mentioned according to subsidence coefficient of sinking well and deviation situation
For avale pressure and assist correction deviation-rectifying system.
Background technique
Open caisson is to make pit shaft on a kind of ground, is tied by the underground for taking soil to be allowed to sink down into underground predetermined depth in well
Structure, well sinking rely primarily on open caisson own wt, blade foot front bearing capacity, side friction power and the water encountered during overcoming
Buoyancy sinks.When well sinking depth is too deep, side friction power is larger or open caisson passes through hard soil layer, and front bearing capacity is larger,
Or open caisson uses non-drainage subsidence, when open caisson is larger by buoyancy, will all reduce subsidence coefficient of sinking well, causes well sinking difficult,
It breaks ground dependent on open caisson self weight merely more difficult.
All directions depth displacement will necessarily be generated during well sinking, except targetedly increasing or decreasing specific region
Open caisson is unearthed except amount, lacks effective control of the effective means realization to open caisson surrounding all directions height difference, and targetedly change
It is apt to each region subsidence velocity.
Summary of the invention
The present invention is to provide for a kind of hydraulic sink deviation-rectifying system of open caisson combined type adjustable counter balance, which can be according to open caisson
Subsidence factor and deviation situation provide pressure under sink and assist rectifying a deviation.
To solve the above problems, the technical scheme is that a kind of hydraulic sink correction of open caisson combined type adjustable counter balance
System, including open caisson base foundation, bracket reaction frame, it is uniformly distributed adjustable along open caisson outer wall surrounding on the cushion cap of open caisson base foundation
Weight, formation is a set of to provide gravity open caisson mechanism vertically downwards by cushion cap self weight and adjustable counter balance, and multiple brackets are arranged in open caisson outer wall
The hydraulic punching jack of unidirectional self-lock is arranged in reaction frame, bracket reaction frame top, and self-locking hydraulic punching jack passes through steel strand wires
Connect cushion cap, formed a set of open caisson surrounding respectively to classification partial pressure, adjust open caisson height difference, assist open caisson deviation rectification mechanism.
Further, the steel strand wires lower end passes through anchoring means and cushion cap anchor connection.
Further, the hydraulic punching jack of the unidirectional self-lock is made of main jack, secondary jack, in main very heavy apical pore
Equipped with intermediate plate, pass through intermediate plate automatically lock steel strand wires during main jack pushing tow, gives counterweight weight transfer to main jack, it is main
General pair jack promotes in jack retraction process, and the very heavy apical pore inner clamp piece of master is flicked, steel strand wires are unclamped.
Further, the hydraulic punching jack of the unidirectional self-lock can be uniformly and symmetrically distributed according to caisson structure form heavy
Well surrounding, each hydraulic punching jack jack oil pressure of unidirectional self-lock individually controls, it can be achieved that synchronous jacking or independent jacking, real
Existing open caisson integrally pushes sink or open caisson individual region pushes correction.
The beneficial effects of the present invention are: side friction power is larger or open caisson passes through hard soil when well sinking depth is too deep
Layer, front bearing capacity is larger or open caisson uses non-drainage subsidence, and when open caisson is larger by buoyancy, subsidence coefficient of sinking well is too small, open caisson
Self weight is not enough to overcome external drag to break ground sinkings, and the present invention can be adjusted with weight size, effectively in conjunction with on-site actual situations
Pressure straight down is provided to open caisson, increases subsidence coefficient of sinking well, auxiliary open caisson breaks ground sinking.Four during well sinking
When height variation occurs in week, it can be formed in conjunction with height variation data to open caisson four by adjusting the jack oil pressure of different zones
Week respectively to classification partial pressure, adjust open caisson height difference, assist open caisson deviation rectification.The hydraulic punching jack energy of unidirectional self-lock in use process
Intermediate plate automatically lock steel strand wires are utilized during main jack pushing tow, by counterweight weight transfer to jack, and are being used
Cheng Hou is promoted using secondary jack, the very heavy apical pore inner clamp piece of master is flicked, and steel strand wires are unclamped, and completes a stroke, is realized each
The automation of stroke.
Detailed description of the invention
Fig. 1 is the hydraulic sink deviation-rectifying system structural schematic diagram of open caisson combined type adjustable counter balance of the invention；
Fig. 2 is the hydraulic sink deviation-rectifying system structure sectional view of open caisson combined type adjustable counter balance of the invention；
Fig. 3 is the hydraulic punching jack structure schematic diagram of unidirectional self-lock of the invention.
Specific embodiment
The present invention is further illustrated with embodiment with reference to the accompanying drawing.
As shown in Figure 1 to Figure 3, the hydraulic sink deviation-rectifying system of a kind of open caisson combined type adjustable counter balance, bottom in Fig. 2 by anchoring
Facility 4, cushion cap 5, adjustable counter balance 6 form, and top is made of the hydraulic punching jack 1 of unidirectional self-lock in Fig. 1, bracket reaction frame 2,
Cushion cap 5 is used as open caisson base foundation, be evenly distributed with adjustable counter balance 6 along 7 surrounding of open caisson outer wall on cushion cap 5, and formation is a set of to be self-possessed by cushion cap
Gravity open caisson mechanism vertically downwards is provided with adjustable counter balance, and open caisson outer wall 7 is arranged multiple bracket reaction frames 2, on bracket reaction frame 2
The hydraulic punching jack 1 of unidirectional self-lock is arranged in portion, and self-locking hydraulic punching jack 1 passes through steel strand wires and anchoring means 4 and cushion cap
Anchor connection, formed a set of open caisson surrounding respectively to classification partial pressure, adjust open caisson height difference, assist open caisson deviation rectification mechanism.
Anchoring means 4 is connect using steel strand wires 3 by the present invention with self-locking hydraulic punching jack 1, by the self weight of cushion cap 5 with
Adjustable counter balance 6 provides vertical gravity, is passed to vertical force using the anchoring means 4 and steel strand wires 3 being embedded in cushion cap self-locking
Hydraulic punching jack 1, the self-locking hydraulic punching jack 1 arranged using multiple spot, each point as needed apply equal or different
Pressure passes to caisson wall by bracket reaction frame 2, realizes the correction of open caisson sink or different directions.
As shown in figure 3, the hydraulic punching jack of unidirectional self-lock is made of main jack, secondary jack, in main very heavy apical pore
Equipped with intermediate plate.The hydraulic punching jack 1 of unidirectional self-lock can utilize hole with the pushing tow of main jack after steel strand wires 3 penetrate
Inner clamp piece, Monodirectional auto-locking steel strand wires, and in main jack retraction process, it is promoted using secondary jack, by main jack
Hole inner clamp piece flicks, and unclamps steel strand wires.
The hydraulic punching jack (1) of unidirectional self-lock is uniformly and symmetrically distributed in open caisson surrounding, each thousand according to caisson structure form
Jin top oil pressure individually controls, it can be achieved that synchronous jacking or independent jacking, realize that open caisson integrally pushes sink or open caisson single area
Domain pushes correction.
When subsidence coefficient of sinking well be unsatisfactory for breaking ground sinking require when, according to balance weight on adjustment cushion cap is calculated, anchoring is set
It applies and is embedded in cushion cap, vertical force is passed into the hydraulic punching jack of unidirectional self-lock by steel strand wires, when needing whole sink,
The upward pushing tow of all jack is opened, main very heavy apical pore inner clamp piece slides self-locking clamping steel strand wires with steel strand wires, so that very heavy
Steel strand wires are kept fixed tensioned state between top and cushion cap, and counterweight gravity is transmitted by steel strand wires completely, and jack lower part passes through
Bracket reaction frame applies pressure straight down to caisson wall, and lower pressure is by adjusting hydraulic jack adjustment of oil pressure, Suo Youqian
Jin top keeps uniform pressure same displacement, and synchronous push realizes whole sink.
When height variation, which occurs, in open caisson surrounding is rectified a deviation, can be adjusted respectively according to height variation data cases
The jack oil pressure of different zones, elevation higher position increase oil pressure, and elevation lower reduces oil pressure, by adjusting different directions
Lower pressure, realizes the correction of open caisson elevation, and specific jack stroke operation mode is same as above.
Application implementation example of the present invention
Engineering is Zhengjiang City huge port water factory one phase water intake engineering, and water-fetching head engineering east, west line open caisson are round reinforced concrete
Structure, two caisson structures are identical, open caisson outer diameter 17.6m, blade foot bottom absolute altitude -33.0m, submergence depth 41.2m, sink eventually
The heavy stage meets with 5. silty clay, characteristic load bearing capacity and reaches 260KPa, and 2m below blade foot absolute altitude is horizon d, open caisson periphery
Have it is important build, structures, open caisson whole process use non-drainage subsidence technique, well sinking simultaneously by larger front bearing capacity, side wall
Frictional resistance and water buoyancy influence, and open caisson self weight is lighter, and subsidence coefficient of sinking well is too small.By using the present invention, effective provide is sunk
Down-hole pressure assists well sinking, and by the correction mode of different zones classification partial pressure, the good control in sinking watching
The height variation situation of open caisson surrounding, realizes smooth sinking.
Claims (4)
1. a kind of hydraulic sink deviation-rectifying system of open caisson combined type adjustable counter balance, including open caisson base foundation, bracket reaction frame, open caisson
It is evenly distributed with adjustable counter balance along open caisson outer wall surrounding on the cushion cap of base foundation, a set of provided by cushion cap self weight and adjustable counter balance is provided and is erected
To downward gravity open caisson mechanism, multiple bracket reaction frames are arranged in open caisson outer wall, and it is hydraulic that unidirectional self-lock is arranged in bracket reaction frame top
Punching jack, self-locking hydraulic punching jack connect cushion cap by steel strand wires, formed a set of open caisson surrounding respectively to classification point
Pressure adjusts open caisson height difference, assists open caisson deviation rectification mechanism.
2. the hydraulic sink deviation-rectifying system of open caisson combined type adjustable counter balance according to claim 1, it is characterised in that: the steel
Twisted wire lower end passes through anchoring means and cushion cap anchor connection.
3. the hydraulic sink deviation-rectifying system of open caisson combined type adjustable counter balance according to claim 1, it is characterised in that: the list
It is made of to self-locking hydraulic punching jack main jack, secondary jack, is equipped with intermediate plate, main jack pushing tow in main very heavy apical pore
In the process by intermediate plate automatically lock steel strand wires, counterweight weight transfer is given to main jack, it is general in main jack retraction process
Secondary jack promotes, and the very heavy apical pore inner clamp piece of master is flicked, and unclamps steel strand wires.
4. the hydraulic sink deviation-rectifying system of open caisson combined type adjustable counter balance according to claim 1, it is characterised in that: the list
It can be uniformly and symmetrically distributed to self-locking hydraulic punching jack in open caisson surrounding, each unidirectional self-lock is hydraulic according to caisson structure form
Punching jack jack oil pressure individually controls, it can be achieved that synchronous jacking or independent jacking, realize open caisson integrally push sink or
Person's open caisson individual region pushes correction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811241711.2A CN109322318A (en) | 2018-10-24 | 2018-10-24 | The hydraulic sink deviation-rectifying system of open caisson combined type adjustable counter balance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811241711.2A CN109322318A (en) | 2018-10-24 | 2018-10-24 | The hydraulic sink deviation-rectifying system of open caisson combined type adjustable counter balance |
Publications (1)
| Publication Number | Publication Date |
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| CN109322318A true CN109322318A (en) | 2019-02-12 |
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| CN201811241711.2A Pending CN109322318A (en) | 2018-10-24 | 2018-10-24 | The hydraulic sink deviation-rectifying system of open caisson combined type adjustable counter balance |
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| CN (1) | CN109322318A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109972644A (en) * | 2019-03-12 | 2019-07-05 | 杭州市市政工程集团有限公司 | Pushing tow open caisson device and its construction method |
| CN110541427A (en) * | 2019-09-05 | 2019-12-06 | 中交第二公路工程局有限公司 | Open caisson shaft deviation rectifying device and deviation rectifying method |
| CN112177039A (en) * | 2019-07-03 | 2021-01-05 | 中天建设集团有限公司 | Top-down construction method one-pile one-column high-precision auxiliary verticality adjusting construction method |
| CN113668587A (en) * | 2021-09-03 | 2021-11-19 | 中建安装集团南京建设有限公司 | Construction method suitable for excavation and pressure sinking of deep and large open caisson of water-rich stratum |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109972644A (en) * | 2019-03-12 | 2019-07-05 | 杭州市市政工程集团有限公司 | Pushing tow open caisson device and its construction method |
| CN109972644B (en) * | 2019-03-12 | 2024-02-23 | 杭州市市政工程集团有限公司 | Open caisson device for pushing and construction method thereof |
| CN112177039A (en) * | 2019-07-03 | 2021-01-05 | 中天建设集团有限公司 | Top-down construction method one-pile one-column high-precision auxiliary verticality adjusting construction method |
| CN110541427A (en) * | 2019-09-05 | 2019-12-06 | 中交第二公路工程局有限公司 | Open caisson shaft deviation rectifying device and deviation rectifying method |
| CN110541427B (en) * | 2019-09-05 | 2024-04-30 | 中交第二公路工程局有限公司 | Deviation correcting device and deviation correcting method for open caisson shaft |
| CN113668587A (en) * | 2021-09-03 | 2021-11-19 | 中建安装集团南京建设有限公司 | Construction method suitable for excavation and pressure sinking of deep and large open caisson of water-rich stratum |
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Application publication date: 20190212 |