CN102776890A - Underwater pushing correcting method of steel cofferdam and pushing device of steel cofferdam - Google Patents
Underwater pushing correcting method of steel cofferdam and pushing device of steel cofferdam Download PDFInfo
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- CN102776890A CN102776890A CN2012102721674A CN201210272167A CN102776890A CN 102776890 A CN102776890 A CN 102776890A CN 2012102721674 A CN2012102721674 A CN 2012102721674A CN 201210272167 A CN201210272167 A CN 201210272167A CN 102776890 A CN102776890 A CN 102776890A
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- steel cofferdam
- pile foundation
- thrustor
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- pushing
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Abstract
The invention discloses an underwater pushing correcting method and a pushing device of a steel cofferdam, belonging to the field of a construction method and a construction device of a foundation of a bridge. The method comprises the steps of connecting the deviated one side of the steel cofferdam with a plurality of formed file foundations to be taken as acting points; arranging a plurality of controllable telescopic pushing devices between the deviated steel cofferdam and the formed pile foundation on the outmost side taken as the acting point; starting the pushing devices, and resetting the steel cofferdam by the jacking force applied by the pushing devices; directly lifting the pushing devices to complete the detaching. The pushing devices comprise front bearing jacking supports, rear bearing bases and controllable telescopic mechanisms for connecting the front bearing jacking supports and the rear bearing bases, the shapes of the cross sections of the front sides of the front bearing jacking supports are identical to the shape of the cross section of the inner side of the steel cofferdam, and the shapes of the cross sections of the rear sides of the rear bearing bases are identical to those of the cross sections of the outer sides of the formed pile foundation. According to a deviation correcting method and a deviation correcting device suitable for large-size structure members such as the steel cofferdam disclosed by the invention, a field device can be utilized directly, so that the deviation correcting can be realized simply and rapidly.
Description
Technical field
The invention belongs to bridge foundation construction method and device field thereof, be applicable to the correction of off normal in heavy steel cofferdam or the open caisson foundation sinking process.
Background technology
Steel cofferdam or open caisson are works important in the bridge foundation.After steel cofferdam adopts on-the-spot spelling to accomplish, adopt locating guide device to transfer.Steel cofferdams etc. mainly rely on guiding device to carry out sinking in place in the sinking process.In the sinking process, in case situation such as steel cofferdam off normal takes place, because steel cofferdam is from great, and entry, the difficulty of correcting off normal is bigger.In at present existing deviation correcting technology, measures such as the outside tractive of the steel cofferdam of employing, uneven prestowage are arranged.In the existing working measure, often need a large amount of temporary measure materials input.The Deviation Correction Construction difficulty is high, operating expenses has high input, the construction period is long.Off normal is corrected very difficulty.
Summary of the invention
The objective of the invention is to: propose the off normal correcting method and the device thereof of large structure such as a kind of suitable steel cofferdam, can directly utilize field device, realize that simply, apace off normal corrects.
The object of the invention realizes through following technical proposals:
A kind of steel cofferdam is the method for correcting error of pushing tow under water, may further comprise the steps successively:
1), select somely to have become pile foundation, and connects, form whole force structure as origin of force in a side of steel cofferdam generation off normal;
2), become to place some controlled flexible thrustors between the pile foundation at steel cofferdam that off normal takes place and aforementioned outermost as origin of force; Concrete laying method is: the position that tilts to the inside to said steel cofferdam is transferred in the suspention of said pushing tow position, and fix at steel cofferdam and become between the pile foundation;
3), start thrustor, load jacking force step by step, the steel cofferdam part of pushing tow generation off normal progressively, the jacking force that applies through thrustor resets steel cofferdam;
4), after the control thrustor retracted for clearance, directly thrustor is promoted and accomplishes dismounting.
As optimal way, in the said step 1), the outside become pile foundation and adjacent inboard to become between pile foundation to form the triangle syndetons through 2 connectors, the pile foundation that becomes in the outside is the summit of triangle syndeton.
A kind of aforementioned steel cofferdam is the special-purpose thrustor of the method for correcting error of pushing tow under water; Pressure-bearing jacking, back pressure-bearing base and the controlled telescoping mechanism that is connected both before comprising; The inboard section configuration of pressure-bearing jacking front side section configuration and steel cofferdam is coincide before said, and back pressure-bearing base rear side section configuration matches with becoming pile foundation outside section configuration.
In the such scheme, preceding pressure-bearing jacking contacts with the steel cofferdam wall body, preceding pressure-bearing jacking front side section configuration should with the inboard crosssection shape design of steel cofferdam, both match.Back pressure-bearing base contacts with becoming pile foundation, and back pressure-bearing base rear side section configuration should match with becoming pile foundation outside section.
As optimal way, said controlled telescoping mechanism comprises the inside and outside conduit of slip socket, and the jack and the length adjustment mechanism that are positioned at inner catheter, and said inner catheter and said preceding pressure-bearing jacking are fixed, and outer catheter and said back pressure-bearing base are fixed.As optimal way, said length adjustment mechanism is some dismountable adjustment cushion blocks being located between jack and the back pressure-bearing base.
As further optimal way, said preceding pressure-bearing jacking front side also is provided with friction pair.
In the such scheme, between steel cofferdam inboard and preceding pressure-bearing jacking front side friction pair is set, prevents slippage.
The course of work is: when steel cofferdam sinks, sink in the outside of pile foundation often.When the off normal of large structures such as steel cofferdam, between the pile foundation and steel cofferdam that the thrustor suspension installation has been become in the cofferdam through the diver.Because this device is telescopic device, starts thrustor and implement pushing tow.During pushing tow, be origin of force to become pile foundation, the steel cofferdam part of pushing tow generation off normal.The jacking force that applies through thrustor resets steel cofferdam.
Beneficial effect of the present invention: the application's method for correcting error directly utilizes and has existingly become pile foundation to carry out the pushing tow steel cofferdam, and to actual stake footpath and steel cofferdam size, between the two not strict demand of spacing.This job practices is simple to operate, and the pushing tow effect is obvious under water.The making of the application's deviation correcting device is simple, can, spacing field fabrication big or small according to actual stake footpath and steel cofferdam.Making, easy to use, the pushing tow effect is obvious.
Description of drawings
Fig. 1 strengthens sketch map local connection of the pile foundation of the one-tenth steel casing of the embodiment of the invention;
Fig. 2 is the steel cofferdam pushing tow position view of the embodiment of the invention;
Fig. 3 is the thrustor mounting plane sketch map of the embodiment of the invention;
Fig. 4 is the thrustor structural representation of the embodiment of the invention;
Wherein 1 for steel cofferdam, 2 for become pile foundation, 3 for the steel casing, 4 for connector, 5 for thrustor, 6 for preceding pressure-bearing jacking, 7 for back pressure-bearing base, 8 for the adjustment cushion block, 9 for inner catheter, 10 for outer catheter, 11 for jack, 12 be friction pair.
The specific embodiment
Following non-limiting examples is used to explain the present invention.
A kind of steel cofferdam is the method for correcting error of pushing tow under water, may further comprise the steps successively:
1) side that, at steel cofferdam 1 off normal takes place is selected somely to have become pile foundation 2 as origin of force; And the steel casing 3 that its outer wall encirclement is fixed couples together through connector 4; Form whole force structure,, do not take place to have become pile foundation 2 impaired to guarantee becoming the stressed reliable of pile foundation 2.According to the size of jacking force, in conjunction with pile base concrete intensity and steel casing wall thickness, material, Modeling Calculation goes out the pile foundation of one-tenth 2 quantity of required connection.As optimal way, become the pile foundation 2 and the adjacent inboard in the outside have become 2 of pile foundations to pass through 2 connectors, 4 formation triangle syndetons, and the pile foundation 2 that becomes in the outside is the summit of triangle syndeton.As shown in Figure 1.
2), become to place some controlled flexible thrustors 5 between the pile foundation 2 at steel cofferdam 1 that off normal takes place and aforementioned outermost as origin of force; Concrete laying method is: the position that tilts to the inside to steel cofferdam 1 is transferred in 5 suspentions of pushing tow position, and fixing is at steel cofferdam 1 with become between the pile foundation 2; Installation can be adopted artificial auxiliary installation of diver under water.Go into the mud degree of depth and the outside, cofferdam soil property situation according to the sword pin, adopt the soil mechanics computational methods, calculate the size of required jacking force, confirm to install the quantity of thrustor 5.Because steel cofferdam 1 pushing tow position 5 is at the position that steel cofferdam 1 tilts to the inside, when thrustor 5 was transferred installation from top to bottom, the inclination screens through steel cofferdam 1 was at steel cofferdam 1 and become between the pile foundation 2 to fix.As shown in Figure 2.
3), start thrustor 5, load jacking force step by step, steel cofferdam 1 part of pushing tow generation off normal progressively, the jacking force that applies through thrustor 5 resets steel cofferdam 1;
4), after control thrustor 5 retracted for clearance, directly thrustor 5 is promoted and accomplishes dismounting.Because thrustor 5 has retractility, after pushing tow resets, directly thrustor 5 is promoted.
Like Fig. 3, shown in 4; A kind of aforementioned steel cofferdam is the special-purpose thrustor of the method for correcting error of pushing tow under water; Pressure-bearing jacking 6, back pressure-bearing base 7 and the controlled telescoping mechanism that is connected both before comprising, preceding pressure-bearing jacking 6 front side section configurations and steel cofferdam 1 inboard section configuration are coincide, and between steel cofferdam 1 inboard and preceding pressure-bearing jacking 6 front sides friction pair 12 are set; Prevent slippage, back pressure-bearing base 7 rear side section configurations match with becoming pile foundation 2 outside section configurations.As optimal way, controlled telescoping mechanism comprises the inside and outside conduit 9,10 of slip socket, and the jack 11 and the length adjustment mechanism that are positioned at inner catheter 9, and inner catheter 9 is fixed with preceding pressure-bearing jacking 6, and outer catheter 10 is fixing with back pressure-bearing base 7.As optimal way, length adjustment mechanism is some dismountable adjustment cushion blocks 8 being located between jack 11 and the back pressure-bearing base 7.Apparatus main body is advisable with structure steel fabrication.Inner catheter 9 and preceding pressure-bearing jacking 6 welding, outer catheter 10 and 7 welding of back pressure-bearing base, outer catheter 10 diameters should be greater than inner catheter 9 diameters, to guarantee that inner catheter 9 is free to slide in outer catheter 10.Whole device is in place through suspention under water under water.
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. the steel cofferdam method for correcting error of pushing tow under water is characterized in that: may further comprise the steps successively:
1), select somely to have become pile foundation, and connects, form whole force structure as origin of force in a side of steel cofferdam generation off normal;
2), become to place some controlled flexible thrustors between the pile foundation at steel cofferdam that off normal takes place and aforementioned outermost as origin of force; Concrete laying method is: the position that tilts to the inside to said steel cofferdam is transferred in the suspention of said pushing tow position, and fix at steel cofferdam and become between the pile foundation;
3), start thrustor, load jacking force step by step, the steel cofferdam part of pushing tow generation off normal progressively, the jacking force that applies through thrustor resets steel cofferdam;
4), after the control thrustor retracted for clearance, directly thrustor is promoted and accomplishes dismounting.
2. steel cofferdam as claimed in claim 1 is the method for correcting error of pushing tow under water; It is characterized in that: in the said step 1); Become pile foundation and the adjacent inboard in the outside have become between pile foundation through 2 connectors formation triangle syndetons, and the pile foundation that becomes in the outside is the summit of triangle syndeton.
3. claim 1 or the 2 described steel cofferdams special-purpose thrustor of the method for correcting error of pushing tow under water; It is characterized in that: pressure-bearing jacking, back pressure-bearing base and the controlled telescoping mechanism that is connected both before comprising; The inboard section configuration of pressure-bearing jacking front side section configuration and steel cofferdam is coincide before said, and back pressure-bearing base rear side section configuration matches with becoming pile foundation outside section configuration.
4. thrustor as claimed in claim 3; It is characterized in that: said controlled telescoping mechanism comprises the inside and outside conduit of slip socket; And the jack and the length adjustment mechanism that are positioned at inner catheter, said inner catheter and said preceding pressure-bearing jacking are fixed, and outer catheter and said back pressure-bearing base are fixed.
5. thrustor as claimed in claim 4 is characterized in that: said length adjustment mechanism is some dismountable adjustment cushion blocks being located between jack and the back pressure-bearing base.
6. like claim 4 or 5 described thrustors, it is characterized in that: pressure-bearing jacking front side also is provided with friction pair before said.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102721674A CN102776890A (en) | 2012-08-02 | 2012-08-02 | Underwater pushing correcting method of steel cofferdam and pushing device of steel cofferdam |
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| CN2012102721674A CN102776890A (en) | 2012-08-02 | 2012-08-02 | Underwater pushing correcting method of steel cofferdam and pushing device of steel cofferdam |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110512522A (en) * | 2019-07-31 | 2019-11-29 | 中铁大桥局集团有限公司 | A kind of compartment method and structure for steel boxed cofferdam large volume back cover |
| CN110761575A (en) * | 2019-10-17 | 2020-02-07 | 上海市基础工程集团有限公司 | Recoverable device for dry operation construction of partial pool wall transformation under full-water operation working condition of pool |
| CN112323831A (en) * | 2020-10-26 | 2021-02-05 | 毛小广 | A double-walled cofferdam structure for hydraulic and hydroelectric engineering |
| CN113202104A (en) * | 2021-05-06 | 2021-08-03 | 中山大学 | Grouting plugging method for offshore wind turbine pile foundation |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002364006A (en) * | 2001-06-06 | 2002-12-18 | Ohbayashi Corp | Construction method for underwater foundation |
| CN101608453A (en) * | 2009-07-06 | 2009-12-23 | 广州市第二市政工程有限公司 | The process of rectifying deviation of open caisson by jacking balance of jack |
| CN202730784U (en) * | 2012-08-02 | 2013-02-13 | 中交二航局第四工程有限公司 | Underwater thrusting device used for deviation correction of steel cofferdam |
-
2012
- 2012-08-02 CN CN2012102721674A patent/CN102776890A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002364006A (en) * | 2001-06-06 | 2002-12-18 | Ohbayashi Corp | Construction method for underwater foundation |
| CN101608453A (en) * | 2009-07-06 | 2009-12-23 | 广州市第二市政工程有限公司 | The process of rectifying deviation of open caisson by jacking balance of jack |
| CN202730784U (en) * | 2012-08-02 | 2013-02-13 | 中交二航局第四工程有限公司 | Underwater thrusting device used for deviation correction of steel cofferdam |
Non-Patent Citations (1)
| Title |
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| 于长海等: "大直径钢围堰纠偏技术研究", 《公路》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110512522A (en) * | 2019-07-31 | 2019-11-29 | 中铁大桥局集团有限公司 | A kind of compartment method and structure for steel boxed cofferdam large volume back cover |
| CN110761575A (en) * | 2019-10-17 | 2020-02-07 | 上海市基础工程集团有限公司 | Recoverable device for dry operation construction of partial pool wall transformation under full-water operation working condition of pool |
| CN110761575B (en) * | 2019-10-17 | 2021-05-28 | 上海市基础工程集团有限公司 | Recoverable device for dry operation construction of partial pool wall transformation under full-water operation working condition of pool |
| CN112323831A (en) * | 2020-10-26 | 2021-02-05 | 毛小广 | A double-walled cofferdam structure for hydraulic and hydroelectric engineering |
| CN113202104A (en) * | 2021-05-06 | 2021-08-03 | 中山大学 | Grouting plugging method for offshore wind turbine pile foundation |
| CN113202104B (en) * | 2021-05-06 | 2022-06-03 | 中山大学 | Grouting plugging method for offshore wind turbine pile foundation |
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Application publication date: 20121114 |