CN101434344B - Self-floating transportation method of bridge box girder - Google Patents
Self-floating transportation method of bridge box girder Download PDFInfo
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- CN101434344B CN101434344B CN2008101546506A CN200810154650A CN101434344B CN 101434344 B CN101434344 B CN 101434344B CN 2008101546506 A CN2008101546506 A CN 2008101546506A CN 200810154650 A CN200810154650 A CN 200810154650A CN 101434344 B CN101434344 B CN 101434344B
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Abstract
The invention relates to a self-floating transportation method of a bridge box girder, belonging to the field of bridge manufacturing technology. The transportation method comprises the steps of launching and riverway transportation, and is characterized in that the self-floating transportation of the box girder adopts box girder sealing, ramp launching and a method for transporting the self-floating box girder by a power boat; the box girder sealing adopts a steel plate for hole-sealing welding, the steel plate is used for seal-welding a hole and an opening on a diaphragm plate of the box girder; air pockets are distributed at the bottom of the box girder, air charging leads the air pockets to upbear the box girder; the ramp launching adopts a windlass for tightening steel wire ropes so as to control the glissade of the box girder, the air pockets are charged with air alternately, the box girder is moved and launching is carried out along the ramp; and after connection with a self-floating steel box, the power boat carries out transportation in riverways. The method has the advantages of being simple, convenient and practicable, saving time and labor, having low cost and being applicable to the self-floating transportation of steel box girder with large size and weight and the like.
Description
Technical field
The invention belongs to bridge manufacturing technology field, particularly relate to a kind of self-floating transportation method of bridge box girder.
Background technology
At present, Longspan Bridge adopts the steel-structure box girder form more.The processing and fabricating of steel-structure box girder is higher to site requirements, and often spendable steel-structure box girder processing place is all far away apart from the camp site.Because the processing place is taken up an area of huge, bustling urban district, cities and towns does not have available place, even bridge is in not bustling area newly developed, the restriction of also excessive because of the place and each side complementary conditions causes most bridge steel box girders can't carry out the processing of case beam at the bridge location place.And steel-structure box girder all has the characteristics that the scale of construction is big, weight is big, and the transportation of steel-structure box girder becomes one of key factor of restriction steel box girder bridge beam construction.The land transport difficulty: could vehicular transport under with the prerequisite of beam segmentation, even require also very high to the car beam after the segmentation; To the rto request height, ordinary road reaches and is difficult to satisfy transportation request with one voice; It is unsuitable long-distance to need traffic control to cooperate; Also be a difficult problem even how the scene of transporting to gets off to install.No matter water route transportation is to use large ship or barge all higher to the requirement in navigation channel.
Summary of the invention
The technical matters of the present invention for existing in the solution known technology, and a kind of self-floating transportation method of bridge box girder is provided.
The purpose of this invention is to provide a kind of simple and easy to do, cost is low, be applicable to that the scale of construction is big, the self-floating transportation method of the big steel-structure box girder of weight.
The technical scheme that the present invention takes is:
A kind of self-floating transportation method of bridge box girder comprises water and river course transportation down, is characterized in: the case beam transports the method from the buoyancy tank beam from the defeated sealing of case beam, ramp Xia Shui, the power boat of adopting of transportation by driving; The welding of steel plate sealing of hole is adopted in the sealing of case beam, and hole and opening on the case beam cross wall are carried out soldering and sealing with steel plate; Air bag is distributed in case beam bottom, and qi of chong channel ascending adversely makes air bag hold up the case beam, and hydromining tightens up steel rope with winch under the ramp, and control steel case beam glides, and air bag replaces qi of chong channel ascending adversely movable case beam along ramp Xia Shui; The power boat is connected the back in transportation in riverways with self-floating steel box.
The present invention can also adopt following technical measures:
Described self-floating transportation method of bridge box girder is characterized in: the case beam carries out counterweight or binding air bag before the water under the ramp, keeps the case beam from floating balance.
Described self-floating transportation method of bridge box girder is characterized in: after the welding of steel plate sealing of hole, the small leakage of soaking is filled in the galvanized wire hammer, and the mending-leakage sealing is carried out with hardwood mallet plug mode in big hole.
Described self-floating transportation method of bridge box girder is characterized in: leg single-sided welding mode is adopted in welding.
Described self-floating transportation method of bridge box girder is characterized in: the kerosene inspection method is adopted in steel plate sealing of hole welding back, is coated with one deck with lime soil in welded joints, and weld seam reverse side brush kerosene carries out leak tightness and detects.
Described self-floating transportation method of bridge box girder is characterized in: the air bag direction across bridge was distributed in case beam bottom when air bag replaced qi of chong channel ascending adversely movable case beam.
Described self-floating transportation method of bridge box girder is characterized in: in the water process, the hanger that welds on the web of rope traction steel case beam limit is regulated beam section gliding direction with air bag under the ramp.
Described self-floating transportation method of bridge box girder is characterized in: winch and earth anchor are connected firmly, and steel rope is worn assembly pulley, are connected with steel case beam, with winch surge tank beam slip velocity.
Described self-floating transportation method of bridge box girder is characterized in: the power boat is connected anchor stud and the case beam section wing plate beam colligation mode that adopts power boat front end with self-floating steel box.
Described self-floating transportation method of bridge box girder is characterized in: power boat and self-floating steel box are in the transportation in riverways process, and beam section the inside is placed with draft engine.
Advantage that the present invention has and good effect:
Self-floating transportation method of bridge box girder is to utilize steel-structure box girder self buoyancy owing to adopted the technical program, adopts the mode of water transport, with the processing and fabricating of case beam, and the up-to-date technology that transportation and installation collection in place are one.Longspan Bridge is on-water bridge, for water transport provides precondition; From transportation by driving is defeated can be from directly undercarriage entry on the processing moulding bed, save and get on the bus or go on board link; From the defeated barge that saves of transportation by driving; Fail owing to shallow draft from transportation by driving, it is little to expose water surface elevation, and width is little, requires the very end for the navigation channel of transporting, and satisfies in the river course that does not possess the shipping condition and transports.The present invention has simple and easy to do, time saving and energy saving, low cost and other advantages are applicable to that the scale of construction is big, the big steel-structure box girder of weight is defeated from transportation by driving.
Description of drawings
Fig. 1 is a water-bound scheme drawing under the ramp of the present invention;
Fig. 2 is that the transportation of power boat is from buoyancy tank beam scheme drawing;
Fig. 3 is the plan structure scheme drawing of Fig. 2.
Among the figure, 1, steel rope, 2, the case beam, 3, air bag, 4, the ramp, 5, water line, 6, gentle rope, 7, channel-section steel pushing tow reaction frame, 8, the power boat, 9, the water surface.
The specific embodiment
For further understanding summary of the invention of the present invention, characteristics and effect, exemplify following examples now also in conjunction with the accompanying drawings, be described in detail as follows:
Consult accompanying drawing 1, Fig. 2 and Fig. 3.
Embodiment
A kind of self-floating transportation method of bridge box girder comprises water and river course transportation down, and its case beam transports the method from the buoyancy tank beam from the defeated sealing of case beam, ramp Xia Shui, the power boat of adopting of transportation by driving.
The welding of steel plate sealing of hole is adopted in the sealing of case beam, and hole and opening on the case beam cross wall are carried out soldering and sealing with steel plate, and leg single-sided welding mode is adopted in welding.After the welding of steel plate sealing of hole, the small leakage of soaking is filled in the galvanized wire hammer, and the mending-leakage sealing is carried out with hardwood mallet plug mode in big hole.The kerosene inspection method is adopted in steel plate sealing of hole welding back, is coated with one deck with lime soil in welded joints, and weld seam reverse side brush kerosene carries out leak tightness and detects.
The case beam carries out counterweight or binding air bag before the water under the ramp, keep the case beam from floating balance.Air bag 3 direction across bridge are distributed in case beam bottom, and qi of chong channel ascending adversely makes air bag 3 hold up case beams 2, and hydromining tightens up steel rope 1 with winch under the ramp, and control steel case beam glides, air bag replace qi of chong channel ascending adversely movable case beam 2 along the ramp 4 times water, to water line 5,9 positions of bubbling through the water column; Winch and earth anchor are connected firmly, and steel rope is worn assembly pulley, are connected with steel case beam.In the water process, the hanger that welds on the web of rope traction steel case beam limit is regulated beam section gliding direction with air bag under the ramp.
The anchor stud of power boat front end is connected with case beam section wing plate beam colligation mode, channel-section steel pushing tow reaction frame 7 is housed between power boat 8 and case beam, is connected with gentle rope 6.The power boat is connected the back in transportation in riverways with self-floating steel box.In the river course transportation, beam section the inside is placed with draft engine to meet emergencies.
Bridge box and beam is failed specific implementation process from transportation by driving:
1, sealing and ramp Xia Shui
With the sealing of beam section, ramp Xia Shui allowed among the beam Duan Zaishui from floating after steel case beam was made and to be finished.
1) steel case beam sealing
I. the welding of steel plate sealing of hole is adopted in the sealing of case beam.Steel plate excision forming with 8mm and 10mm carries out soldering and sealing than the big 30mm of foramen primum, and postwelding kerosene is checked, opens interim manhole on steel case back plate, is convenient to enter the casing inspection.Steel case beam is made the completion inspection declaration and is finished, and utilizes two outside cross walls, earlier on the cross wall all is crossed the welding hole opening and carries out soldering and sealing with steel plate, guarantees airtight water-tightly, and the leg welding by one side of 7mm is adopted in welding.Steel case sealing back is checked with kerosene, is coated with one deck with lime soil in welded joints, weld seam reverse side brush kerosene, and whether the lime coating macula lutea occurs on the weld seam later, if any being exactly the kerosene infiltration.That just digs out repair welding.Till meeting airtight requirement.
Ii. tire under the girder steel is treated ends of applying for checking and examination of case beam paint, two outside cross wall people holes is guaranteed water-tight with the steel plate sealing, and the same leg that adopts single face 7mm of welding carries out airtight test after welding, till meeting the requirements, and water under wait all working is finished after.On casing, make anchor point, be convenient to transport the laggard capable working fastening that puts in place.
Iii. dress welds water traction member and transportation colligation part down, and these members require solid and reliable, and scrutiny after welding must meet force request.
2) water under the steel case beam
I. anchor point was arranged on 55 meters of steel case beam moulding bed after steel case beam glided, and No. 28 channel-section steels of weldering are strengthened on Φ 500mm steel pipe, and with No. 50 anchor chains, Φ 24 steel ropes add assembly pulley can draw 500 tons-800 tons.With earth anchor steel pipe component buried underground 5 meters dark, make anchor chain along being subjected to force direction, so that the winch bolt is solid tiltedly for ground surface.
Ii. build one long 70 meters, wide 20 meters, slope than 1: 9 ramp, should harden in the ramp, require surface smoothing, and tamp with pebbles the both sides, ramp, and entry place should be deep-cut, guarantee draft reach three meters dark.
Iii. under the casing in the neatly process rear haulage point be arranged on the web of steel case beam limit and weld hanger.Regulating beam section gliding direction with air bag in the water process down.
Iv. one 5 tons winch and earth anchor is connected firmly, wear 8 assembly pulleys with the steel rope of Φ 24, contact with steel case beam, two fastener requirement is firmly solid, and (according to steel case beam deadweight force analysis, 140 tons steel case beam is not considering on 1: 9 the ramp under the situation of friction force that downward power is about 18 tons, and 5 tons winch can bear 40 tons pulling force through 8 times of assembly pulleys, being far longer than the downward power of beam section, is safe and reliable), start winch and steel rope is tightened got final product.
V. descend 1.5 meters of the air bag diameters that water uses, long 13 meters can be born 1 air pressure, and casing is placed 5 air bags down, can bear the 40-50 ton in the air bag operation process, and maximum is born 80 tons under the quiescence, maximum height 800MM after the pressure-bearing, height 450MM in the operation process.14 meters air bag direction across bridge with 1.5 meters long of 5 Φ is distributed in case beam bottom, and qi of chong channel ascending adversely allows air bag slowly hold up the case beam, makes the case beam break away from the steel pier, tightens up steel rope simultaneously, makes steel case beam be fixed in the original place, does not glide.With other 4 air bags gas of substituting the bad for the good.When air bag raises above buttress, stop to observe no abnormal back and remove buttress.
Vi. because steel case beam sealing centre-of gravity shift is carried out counterweight with briquetting.Keep balance all around after making the entry of steel case beam.Concrete measure is as follows: 1.Add sandbag in case beam one side, keep balance.2。As absorb water and to place air bag deeply in casing front end qi of chong channel ascending adversely increase buoyancy adjustment balance.Take out all steel piers of former support steel case beam, start winch steel case beam is slowly down slided, simultaneously other 5 air bags are distributed on the descending ramp in advance, be used alternatingly, until the entry of steel case beam.With 6 airbag aerations, winch is adorned assembly pulley before the following water.Following water process central sill section is slided slowly, speed 0.4M/MIN-0.5M/MIN.Under casing, intake as if the discovery casing behind the water, the anti-bank of pulling on of casing can be treated to descend water again after rest and reorganization finish.
Vii. prepare two battery lights and mending-leakage material.As: galvanized wire, timber and special tool, whether warehouse entry inspection immediately leaks after the entry of steel case beam, if having, should take emergent mending-leakage measure.Small soak leakage with galvanized wire hammer plug, if big hole is arranged with hardwood mallet plug, can not a little soak in a word leakage can, if it is relatively more serious incessantly stifled to leak, the disembarkation of pulling back of steel case beam is handled.For prevent that the beam section from leaking in transportation, the beam section is placed a period of time after entry, and draw with winch the back, observes to have after the abnormal condition toward on-the-spot haul.Placing 1 of draft engine in beam section the inside in the haul process meets emergencies.
Viii. after confirming that steel case beam is water-tight, more all pores are removed the disembarkation of pulling back, make steel case beam floating voluntarily,, wait ready for delivery with the colligation of power boat.
2, power boat transportation
The beam section swims in the river.Adopt power boat pushing steel box girder that the beam section is transported to the bridge bridge site.The draft of beam section is 1.3 meters as calculated, and the height of beam section edge on the water surface approximately is 1.5 meters.Adopt the anchor stud of power boat front end to be connected with beam section wing plate.Survey the depth of water situation in river course before the transportation of beam section.Situation during with long-term lowest water level is considered, makes navigation mark and avoids stranded among the beam Duan Zaishui.
Adopt power boat pushing steel box girder, steel case beam direction across bridge moves ahead, and is before the pushing tow that steel case beam and the colligation of power boat is firm, and welding two hangers under the steel box beam flange are with bundled steel wires and the tension of power boat.Welding two emissions groove steel increase area of thrust surface before power boat two anchor stud, in order to avoid stressed concentrated destruction steel case beam.The rubber guard timber is installed in power boat pushing tow and steel case beam contact site, and abundant, the roomy contact surface that as far as possible makes of guard timber maximizes, and flexible, installation is firm, allows anything but to come off.So just can not damage steel case beam, can not cause the case beam to be out of shape because of pushing tow.Transport the pier location of noting two bridges in the process and guarantee that the steel box girder integral passes through smoothly, avoid friction, more can not collide.
Claims (7)
1. a self-floating transportation method of bridge box girder comprises water and river course transportation down, it is characterized in that: steel case beam transports the method from floating steel case beam from the defeated sealing of steel case beam, ramp Xia Shui, the power boat of adopting of transportation by driving; The welding of steel plate sealing of hole is adopted in the sealing of steel case beam, and hole and opening on the steel case beam cross wall are carried out soldering and sealing with steel plate; Air bag is distributed in steel case beam bottom, and inflation makes air bag hold up steel case beam, and hydromining tightens up steel rope with winch under the ramp, and control steel case beam glides, and air bag is alternately inflated mobile steel case beam along ramp Xia Shui; The power boat is connected the back in transportation in riverways with the self-floating steel box beam.
2. self-floating transportation method of bridge box girder according to claim 1 is characterized in that: steel case beam carries out counterweight or binding air bag before the water under the ramp, keeps steel case beam from floating balance.
3. self-floating transportation method of bridge box girder according to claim 1 is characterized in that: after the welding of steel plate sealing of hole, the small leakage of soaking is filled in the galvanized wire hammer, and the mending-leakage sealing is carried out with hardwood mallet plug mode in big hole.
4. self-floating transportation method of bridge box girder according to claim 1 is characterized in that: in the water process, the hanger that welds on the web of rope traction steel case beam limit charges and discharge controlled atmosphere joint steel case beam beam section gliding direction with air bag under the ramp.
5. self-floating transportation method of bridge box girder according to claim 1 is characterized in that: winch and earth anchor are connected firmly, and steel rope is worn assembly pulley, are connected with steel case beam, with winch control steel case beam beam section slip velocity.
6. self-floating transportation method of bridge box girder according to claim 1 is characterized in that: the power boat is connected anchor stud and the steel case beam beam section wing plate beam colligation mode that adopts power boat front end with the self-floating steel box beam.
7. self-floating transportation method of bridge box girder according to claim 1 is characterized in that: power boat and self-floating steel box beam are in the transportation in riverways process, and steel case beam beam section the inside is placed with draft engine.
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| CN2008101546506A CN101434344B (en) | 2008-12-30 | 2008-12-30 | Self-floating transportation method of bridge box girder |
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| CN2008101546506A CN101434344B (en) | 2008-12-30 | 2008-12-30 | Self-floating transportation method of bridge box girder |
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| CN101434344B true CN101434344B (en) | 2011-07-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106395409A (en) * | 2016-11-28 | 2017-02-15 | 山东莱钢建设有限公司 | Container loading device and method |
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| CN102602712B (en) * | 2012-03-29 | 2013-12-18 | 武船重型工程股份有限公司 | Method for shipping of segments of steel box girders by rolling |
| CN105908628A (en) * | 2016-04-22 | 2016-08-31 | 上海市机械施工集团有限公司 | Wholly roll-roll landing device for steel truss bridge and construction method of wholly roll-roll landing device |
| CN105908627B (en) * | 2016-04-22 | 2018-01-19 | 上海市机械施工集团有限公司 | Steel girder bridge, which integrally rolls, loads water installations and its construction method |
| CN107090774A (en) * | 2017-05-23 | 2017-08-25 | 中建钢构有限公司 | It is easy to the bicycle high speed steel box-girder of welding |
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| CN1472400A (en) * | 2003-06-26 | 2004-02-04 | 中铁大桥局集团有限公司 | Method for positioning whole floatation transported steel caisson by pre-exerting tension at anchor pier and being drilling platform |
| CN2793147Y (en) * | 2005-06-10 | 2006-07-05 | 路桥集团第二公路工程局 | Steel box suspension beam for multi-span suspension bridge |
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| CN106395409A (en) * | 2016-11-28 | 2017-02-15 | 山东莱钢建设有限公司 | Container loading device and method |
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| CN101434344A (en) | 2009-05-20 |
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Owner name: TIANJIN URBAN CONSTRUCTION GROUP CO., LTD. |
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Effective date of registration: 20110801 Address after: 300074 No. 3 Zijin Road, Tianjin, Hexi District Co-patentee after: Tianjin Urban Construction Group Co., Ltd. Patentee after: Tianjin No. 3 Nunicipal Highway Engineering Co., Ltd. Address before: 300074 No. 3 Zijin Road, Tianjin, Hexi District Patentee before: Tianjin No. 3 Nunicipal Highway Engineering Co., Ltd. |
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Assignee: Tianjin Urban Construction Group Co., Ltd. Assignor: Tianjin No. 3 Nunicipal Highway Engineering Co., Ltd. Contract record no.: 2011120000196 Denomination of invention: Self-floating transportation method of bridge box girder Granted publication date: 20110720 License type: Exclusive License Open date: 20090520 Record date: 20111014 |