CN202519690U - Releasing device for bottomless dual-wall steel boxed cofferdam - Google Patents
Releasing device for bottomless dual-wall steel boxed cofferdam Download PDFInfo
- Publication number
- CN202519690U CN202519690U CN2012201281422U CN201220128142U CN202519690U CN 202519690 U CN202519690 U CN 202519690U CN 2012201281422 U CN2012201281422 U CN 2012201281422U CN 201220128142 U CN201220128142 U CN 201220128142U CN 202519690 U CN202519690 U CN 202519690U
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- support
- cofferdam
- platform
- continuous jack
- support platform
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Abstract
The utility model discloses a releasing device for a bottomless dual-wall steel boxed cofferdam. The releasing device comprises a support platform, wherein the support platform is formed by horizontally connecting a plurality of support pile casings with steel tubes; an assembling platform is arranged on the outer sides of the support pile casings on the periphery of the support platform; a releasing bracket is arranged at the top of the support pile casings on the periphery of the support platform; and a continuous jack is arranged on the releasing bracket. According to the releasing device disclosed by the utility model, the large-sized steel boxed cofferdam under the conditions of deep water and complex hydrological, geological and meteorological conditions can be accurately positioned and construction procedures can be reduced; in addition, the interference on a navigation channel is less; the construction period is shortened, construction expenses are reduced and the positioning accuracy of the cofferdam and the sinking inclination of the support pile casings are effectively controlled. The problems in the construction of large-sized high-rise pile caps in the deepwater, swift current and busy navigation rivers can be better solved.
Description
Technical field
The utility model relates to a kind of bridge foundation construction technical field, and particularly a kind of no end double-walled steel boxed cofferdam is transferred device.
Background technology
The embedding riverbed of cushion cap is darker, receives the influence of the depth of water and passing ships, has brought many difficult problems to construction.The side form of cofferdam during as the temporary water dash structure of bearing platform construction and cushion cap concreting, it transfers the accuracy of position and transfers the safety of process particularly important.The cofferdam generally promptly earlier on the riverbank processing factory with cofferdam merogenesis, piecemeal processing and fabricating; Then piece spare is transported to place, pier position with vehicle through construction bridge; Utilize crawler crane that cofferdam piece spare is lifted to barge container and carry out spelling, with the large-tonnage crane barge cofferdam integral hoisting is transferred after spelling finishes.This scheme construction equipment needed thereby is more, need rent large-tonnage crane barge waterborne and barge container, and cost is higher, and the cofferdam is in that to transfer the skew of process median-plane location wayward.
The utility model content
The purpose of the utility model is to solve the deficiency of prior art and provide a kind of safe and reliable, and the double-walled steel boxed cofferdam of the no end of good integrity is transferred device.
Double-walled steel boxed cofferdam of a kind of no end is transferred device; Comprise support platform; Said support platform is linked to be integral body by the flat couplet of a plurality of support casings employing steel pipes and constitutes; Said support platform is equipped with platform for lining on the said support casing outside of periphery, said support platform is equipped with at the said support casing top of periphery and transfers support, and said transferring is equipped with continuous jack on the support.
In the utility model, said support casing bottom is squeezed in the riverbed, and the top is provided with as the steel plate capping of transferring the mounting platform of support.
In the utility model, the jacking end of said continuous jack is equipped with clamper, and the bottom of said continuous jack is equipped with lower gripper, and said going up on clamper and the lower gripper is equipped with steel strand.
In the utility model, the said support of transferring is evenly distributed on said support platform symmetrically, and the suspension centre on the said continuous jack on clamper, lower gripper and the cofferdam is on same straight line.
In the utility model, the said support of transferring is provided with a plurality of level gauges.
Adopt such scheme, utilize many continuous jack, transfer the double-walled steel boxed cofferdam synchronously; Remedy large-tonnage crane barge integral body and transferred the defective of method; Utilize this device under deep water, the complicated hydrology, geology, meteorological condition, large-scale steel boxed cofferdam accurately to be located, can reduce working procedure again; And disturb less to the navigation channel; Can also accelerate construction period, reduce operating expenses, effectively control the cofferdam positioning accuracy and support casing sinking gradient, can solve preferably that deep water, stream are anxious, in the busy river of shipping, the problem that exists during large-scale highrise pile cap construction.
Description of drawings
Fig. 1 is the continuous jack fundamental diagram of the utility model.
Fig. 2 transfers the support layout plan for the utility model cofferdam.
Fig. 3 transfers continuous jack for the utility model and arranges elevation.
Fig. 4 is the utility model cofferdam construction diagrams.
In the accompanying drawing 1 to 4,1, continuous jack, 2, go up clamper, 3, steel strand, 4, lower gripper, 5, the cofferdam, 6, support casing, 7, transfer support, 8, platform for lining.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described further.
Double-walled steel boxed cofferdam of a kind of no end is transferred device; Comprise support platform, said support platform is linked to be integral body by the flat couplet of a plurality of support casings 6 employing steel pipes and constitutes, and said support platform is equipped with platform for lining 8 on said support casing 6 outsides of periphery; Said support platform is equipped with at said support casing 6 tops of periphery and transfers support 7; Said transferring is equipped with continuous jack 1 on the support 7, said support casing bottom 6 is installed on the riverbed, and the steel plate capping is used at the top; The jacking end of said continuous jack 1 is equipped with clamper 2; The bottom of said continuous jack 1 is equipped with lower gripper 4, and said going up on clamper 2 and the lower gripper 4 is equipped with steel strand 3, and the said support 7 of transferring is evenly distributed on said support platform symmetrically; Suspension centre on the said continuous jack 1 on clamper 2, lower gripper 4 and the cofferdam 5 is on same straight line, and the said support 7 of transferring is provided with a plurality of level gauges.
It is following to utilize this device to transfer the specific embodiment in cofferdam:
Complete cofferdam construction comprises the first step: drilled pile construction; Second step: design of double-walled steel boxed cofferdam and processing; The 3rd step: the cofferdam assembly unit, connect height, transfer; The 4th step: the clear base in cofferdam, back cover; The 5th step: the back is drawn water by conventional method construction cushion cap and pier shaft in the cofferdam, and the utility model key technology is the cofferdam assembly unit of the 3rd step, connects height, transfers, and particularly uses double-walled steel boxed cofferdam of the no end to transfer device, specifies as follows:
As shown in Figure 2, the cofferdam assembly unit, connect height and the construction worker operation of a kind of embodiment of transferring is: high second and third joint cofferdam → head in assembly unit first segment cofferdam → connect saves the cofferdam and transfers → and the high fourth, fifth joint cofferdam → cofferdam of burying → connect, cofferdam is transferred and is put in place.Concrete technology is following:
1. early-stage preparations: as shown in Figure 4, will support the flat couplet of casing 6 usefulness φ 30cm steel pipes and be linked to be integral body.Support welding cofferdam platform for lining 8 on the casing 6 in the outside, it is material that platform for lining 8 adopts 2H45 shaped steel, and diagonal brace is as main bearing member in the employing, and the cradle top surface absolute altitude is+23m.The guiding device in cofferdam 5 adopts upper and lower double-deck guiding.Last leading truck is a fixed guide, is installed in to support on the casing 6, adopts worker's 28 shaped steel to be welded the long 3m of guide peg; Following guide peg is a mobile guide, is welded on cofferdam 5 inside bottom, and length is 1m.Upper and lower guiding device is in same plan-position, cofferdam.
As shown in Figure 3, install and to transfer support 7: cofferdam 5 is transferred support 7 and is employed in and supports casing 6 tops and go up the weld type steel bracket as main bearing member, supports casing 6 very useful steel plate cappings, as the mounting platform of transferring support 7.
Place system under the cofferdam: place system is made up of continuous jack 1, hydraulic system and steel strand 3 under the cofferdam, and hydraulic system comprises hydraulic oil pump and control system.The characteristics of following place system are the continuity and the synchronism of its work, and many continuous jack 1 realize that each suspension centre promotes synchronous requirement, transfers to the precalculated position reposefully with cofferdam 5 under the control of oil pump.
The cofferdam assembly unit: assembly unit is vertically carried out by every joint in the first segment cofferdam on operating platform, the first segment cofferdam by the 80T crane barge from the bridge axis to the bilateral symmetry assembly unit.Assembly unit is as shown in Figure 5 in proper order, A1, A2, A3 → A6, A7, A8 → A4, A5 → A9, A10.
2. weld suspension centre: first segment cofferdam 5 is provided with the suspension centre corresponding with continuous jack 1; The position of suspension centre is corresponding with the position of continuous jack 1; Hydraulic system can adapt to 6 requirements that the suspension centre lift stroke is synchronous, and the same suspension centre of hydraulic system ability automatic equalization promotes the bearing capacity of continuous jack simultaneously.Every pumping plant gives 6 of 6 suspension centres to promote continuous jack fuel feeding respectively, and regulates fuel feeding by the control signal that the control system sends for respectively the master cylinder of corresponding jack continuously, clamper.The operating pressure of this hydraulic system all is lower than the rated pressure of continuous jack, oil pump and valve member, makes the said equipment have suitable capacity reserve.On all continuous jack, be provided with hydraulic lock, when fortuitous events such as power failure or pipeline rupture take place, can make continuous jack cylinder self-locking, guarantee cofferdam safety.When normally transferring, upper and lower holder is in the state of opening or closing respectively, like special circumstances, can upper and lower clamper all be locked by manual work, makes intermediate plate locking steel strand, guarantees to transfer structural safety.
3. place system down is installed: as shown in Figure 4, support casings at 6 and transfer that 1 specified lifting force respectively is set on the support 7 is 100 tons continuous jack.As shown in Figure 1; 10
intensity of every continuous jack configuration are the steel strand of 1860Mpa level; Steel strand pass clamper successively, continuously jack, lower gripper, the suspension centre of transferring on support and the cofferdam are connected to form load supporting system; For guaranteeing the rationally stressed of steel strand,, continuous jack 1 make suspension centre on continuous jack 1 upper and lower clamper 2,4 and the cofferdam 5 when being installed with suspension centre on same straight line.During installation: after jack 1, oil pump are in place continuously; One of steel strand 3 is passed continuous jack 1, goes up to be installed on the steel strand 3 behind clamper 2 and the lower gripper 4 connector is installed; When upper and lower clamper 2,4 is in open mode; Transfer steel strand 3 then, again connector is connected with cofferdam 5 suspension centres.
4. transfer system debug and first the lifting: before transfer in cofferdam 5, Hoisting System is debugged, in shape with the duty of confirming every continuous jack 1, and whether detect each continuous jack 1 flexible stroke consistent.Load when 5 balances are transferred in the cofferdam according to each continuous jack 1 earlier before beginning to transfer carries out prestretching one by one.After all continuous jack 1 were accomplished prestretching according to the payload values of calculating, locking lower gripper 4 was withdrawn into unified height and position downwards with main top piston, as the starting point of transferring of whole system.Whether then the anchoring and the cofferdam structure of anchor point and continuous jack 1 clamper on the 3～5cm inspection cofferdam mentioned in the cofferdam normal.Check that the platform for lining that the cofferdam is removed in errorless back formally begins to transfer.
5. transfer in the cofferdam: when transferred in the first segment cofferdam, the lower gripper by continuous jack clamped steel strand earlier, and main top piston upwards advances; Clamp after piston puts in place and go up clamper, main top piston continues upwards to advance 3cm, opens lower gripper; Main top piston bounces back downwards, and transfer in the first segment cofferdam, after piston retraction in main top puts in place; Lower gripper clamps steel strand once more, accomplishes and once transfers circulation.Transfer when the first segment cofferdam and to accomplish the back and on the first segment cofferdam, connect high second and third joint cofferdam, continue to transfer the cofferdam, when first, second and third save cofferdam transfer put in place after; Connect high fourth, fifth joint cofferdam again; Continue to transfer the cofferdam, make the cofferdam all transfer and put in place, above-mentioned cofferdam connects high technology and just connects high getting final product according to original technology; Through the action that hydraulic system is gone round and begun again, make the cofferdam transfer to preposition.Hydraulic oil pump is the power source of continuous jack when transferring, and equate because every table oil pump is supplied with the oil mass of each continuous jack, and on the jack travel switch is being housed continuously, thereby each continuous jack has good net synchronization capability.In addition, several level gauges are set on the wall body in cofferdam, observe the synchronism that transfer in the cofferdam at any time, when the absolute altitude of finding certain point surpasses maximum allowable offset, system adjusted with the balance that guarantees the cofferdam and transfer.
Claims (5)
1. the double-walled steel boxed cofferdam of the no end is transferred device; It is characterized in that: comprise support platform; Said support platform is linked to be integral body by the flat couplet of a plurality of support casings employing steel pipes and constitutes; Said support platform is equipped with platform for lining on the said support casing outside of periphery, said support platform is equipped with at the said support casing top of periphery and transfers support, and said transferring is equipped with continuous jack on the support.
2. double-walled steel boxed cofferdam of the no end according to claim 1 is transferred device, it is characterized in that: said support casing bottom is squeezed in the riverbed, and the top is provided with as the steel plate capping of transferring the mounting platform of support.
3. double-walled steel boxed cofferdam of the no end according to claim 1 and 2 is transferred device; It is characterized in that: the jacking end of said continuous jack is equipped with clamper; The bottom of said continuous jack is equipped with lower gripper, and said going up on clamper and the lower gripper is equipped with steel strand.
4. double-walled steel boxed cofferdam of the no end according to claim 3 is transferred device; It is characterized in that: the said support of transferring is evenly distributed on said support platform symmetrically, and the suspension centre on said continuous jack, last clamper, lower gripper and the cofferdam is on same straight line.
5. double-walled steel boxed cofferdam of the no end according to claim 4 is transferred device, it is characterized in that: the said support of transferring is provided with a plurality of level gauges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201281422U CN202519690U (en) | 2012-03-30 | 2012-03-30 | Releasing device for bottomless dual-wall steel boxed cofferdam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201281422U CN202519690U (en) | 2012-03-30 | 2012-03-30 | Releasing device for bottomless dual-wall steel boxed cofferdam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202519690U true CN202519690U (en) | 2012-11-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201281422U Expired - Fee Related CN202519690U (en) | 2012-03-30 | 2012-03-30 | Releasing device for bottomless dual-wall steel boxed cofferdam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202519690U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106677075A (en) * | 2017-03-01 | 2017-05-17 | 中国五冶集团有限公司 | Method for cofferdam pile suspension of pier construction and flood protection |
| CN107288140A (en) * | 2017-08-01 | 2017-10-24 | 中交武汉港湾工程设计研究院有限公司 | The steel cofferdam constructing device that actively sinking is rectified a deviation and construction method |
-
2012
- 2012-03-30 CN CN2012201281422U patent/CN202519690U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106677075A (en) * | 2017-03-01 | 2017-05-17 | 中国五冶集团有限公司 | Method for cofferdam pile suspension of pier construction and flood protection |
| CN106677075B (en) * | 2017-03-01 | 2018-06-29 | 中国五冶集团有限公司 | A kind of cofferdam for Bridge Pier Construction hangs stake and method of passing the flood period |
| CN107288140A (en) * | 2017-08-01 | 2017-10-24 | 中交武汉港湾工程设计研究院有限公司 | The steel cofferdam constructing device that actively sinking is rectified a deviation and construction method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121107 Termination date: 20130330 |