CN1851137A - Gate-type crane semiarch integral-hoisting steel-pipe arch process - Google Patents
Gate-type crane semiarch integral-hoisting steel-pipe arch process Download PDFInfo
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- CN1851137A CN1851137A CN 200610042740 CN200610042740A CN1851137A CN 1851137 A CN1851137 A CN 1851137A CN 200610042740 CN200610042740 CN 200610042740 CN 200610042740 A CN200610042740 A CN 200610042740A CN 1851137 A CN1851137 A CN 1851137A
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Abstract
The invention relates to erecting construction of a steel pipe concrete arch bridge, especially a door crane-used half-arch integral steel pipe arch hoisting process, dividing each arch rib into two hoisted units, where each 1/2 arch is hoisted by two door cranes, where a fixed door crane serves as an arch span hoister and an active door crane serves as an arch foot hoister. And the invention is applied to bottom, middle and top bearing arch bridges constructed by bracket-free process. And the span of the steel pipe arch installed by the invention can reach above 300 meters, and the weight of the installed steel pipe can reach above 2000 tons. And it does not influence navigation, able to applied to single- or multiple- span construction; the hoisting safety is higher; and the shape of the arch axis is good; it needs no huge anchoring system and applied to various arch bridges.
Description
Technical field
The invention belongs to technical field of bridge construction, relate to the erection construction of concrete-filled steel tubes arch bridge, particularly gate-type crane semiarch integral-hoisting steel-pipe arch process.
Background technology
One of topmost operation is exactly that arch rib is installed in the concrete-filled steel tubes arch bridge construction, and the method for installation has: no support cable lifting; The lifting of limited bracket cable; Full wafer arch rib or limited bracket crane barge are installed; The lifting of suspension bridge type cable; Rotator construction; Assemble on the support; Jack tiltedly draws button to hang cantilever etc.
Tiltedly draw button extension cantilever method and rotation swivel construction method to do simple the introduction with jack comparatively commonly used.It is exactly to utilize the Suo Li that is used to detain the suspension cable of hanging steel pipe when lifting to adjust arch rib axis deformation when controlling the lifting absolute altitude and adjusting the cast of pipe inner concrete that jack tiltedly draws button to hang that cantilever installs.Need handling, button to hang two cover systems, equipment has high input; Long construction period; Working security is poor; Lift limited in one's ability; Huge anchor ingot system need be set; Become line of apsides shape error big; Remove difficulty.
Construction by swing generally is applicable to the construction of all kinds of single hole arch bridges, its basic principle is: arch ring or whole superstructure are divided into two and half stride, utilize landform or simple beam to be assembled into semiarch in the two sides, river respectively, utilize dynamical system that its two halves are striden donor then and turn to bridge axial location (or design elevation) and join the two sections of a bridge, etc into arch.The Construction of Swivel of Arch Bridge method according to the difference of its rotational orientation be divided into turning in the plane, two kinds of vertical turns.Turning to be divided in the plane has two kinds of balance weight rotator construction and no balance weight rotator constructions.There is the balance weight rotator construction of turning only to be applicable to the single hole bridge; Balance weight is excessive uneconomical; Construction span less (span is not more than 160m), no balance weight rotator construction only is applicable to the single hole bridge; Only be applicable to geological conditions V-arrangement riverbed construction preferably; The anchoring system complexity; The cable lifting construction is long in time limit; Construction equipment has high input; Huge anchor ingot system need be set; Working security is poor; Lift limited in one's ability; Become line of apsides shape error bigger, the arch internal stress is bigger; Remove difficulty.
Summary of the invention
The present invention proposes a kind of gate-type crane semiarch integral-hoisting steel-pipe arch process, and this is a kind of brand-new arch rib Installation Modes, and its span that steel tube arch is installed can reach more than 300 meters, and its installed steel pipe arch weight can reach more than 2000 tons.
Technical scheme of the present invention is: gate-type crane semiarch integral-hoisting steel-pipe arch process comprises the steps:
1.1 gantry crane setting and steel tube arch transportation by driving are in place
Whenever stride down stride the footpath 1/3 and 2/3 place be provided with a fixedly gantry crane, stride steel tube arch front end lifting appliance as 1/2, two arch springing places respectively establish a movable gantry crane, stride steel tube arch rear end lifting appliance as 1/2, the whole steel tube arch of striding is divided into four sections and processes in factory, after assembly unit welding and the passed examination, with the iron barge ship on the water transportation by driving to bridge location handle affairs establish earlier two fixedly under the gantry crane;
1.2 1/4 vault rises and butt joint
Two 1/4 arch closure end next doors are set up support and are used two table oils top jacking simultaneously steel tube arch on the iron barge ship, and successively increase to prop up and fill up to design height, after 1/4 steel tube arch jacking puts in place two ship tractions are docked, adjust the hull position, two 1/4 arch axis lines are adhered to specification, fixedly truss on two ships is connected, make two ship shape become whole;
1.3 1/4 arch closure is 1/2 arch
By oil top fine setting steel tube arch facade line style, make the accurate contraposition of steel tube arch, its axis and close up an absolute altitude and satisfy code requirement, with the arch abutment outward flange by the aligned in position during pre-assembly the in the factory, junction plate is installed, is carried out repetition measurement once more, after meeting the requirements fully it is welded on request, form 1/2 arch ring, the moulding of half range main arch rib was waited to hang after butt welded seam carried out 100% ultrasonic testing/ ultrasonic examination passed examination after having welded;
1.4 1/2 arch section promotes
After the hull translation puts in place, on steel tube arch, install forward and backward suspender, at first fixedly promote the oil top on gantry crane and the movable gantry crane continuously by 1/2 good steel tube arch of 2 level liftings simultaneously of steel strand welding, after treating that steel tube arch has just broken away from support, only start the fixedly oily continuously top of the preceding suspension centre of gantry crane, slowly promote steel tube arch by steel strand; Treat that 1/2 arches upward and hangs axis when substantially parallel with theoretical axis, suspension centre oil top continuously behind the startup activity gantry crane, the front and back suspension centre promotes steel tube arch synchronously;
1.5 arch springing pin joint
The steel tube arch arch springing cuts with scissors when arriving design height temporarily, adjusts the arch springing position, penetrates interim hinge pin axle, slowly promotes preceding suspension centre and measures absolute altitude at any time, and the arch axis line is overlapped with theoretical axis, finishes semiarch and installs;
1.6 in like manner finish 1/2 arch installation in addition;
1.7 vault closes up
Promote the oil top by fixing gantry crane and accurately adjust vault absolute altitude and linear, survey temperature at that time, add the temperature correction value, according to the vault size, steel pipe is reserved in cutting and installation in position welds, and finishes arch ring and closes up;
1.8 cable wind rope is laid
After arch ring closes up,, 4 road cable wind ropes are set in the every side of arch ring in order to prevent bridge location place wind effect;
1.9 gantry crane and arch ring cable wind rope are removed
In like manner finish other one side steel tube arch and install, and the beam wind support is installed, after the two sides steel tube arch is stable, remove gantry crane and arch ring cable wind rope.
Described gantry crane adopts fixedly gantry crane and movable gantry crane, the gantry crane overall height is meter lifting spaces, spring of arch+10, the gantry crane width be bridge wide+4~6 meters, a gantry crane hoisting weight can reach 600~800 tons, promptly adopts four gantry crane integral lifting of half arch that the steel tube arch that weighs about 2000~3000 tons can be installed; 300~400 tons of movable gantry crane hoisting weights; The gantry crane lifting means uses and promotes jack continuously, and its maximum lift weight can reach more than 1000 tons, during work, moves back and forth drive moveable anchor clamping steel strand by two table oil top oil cylinders and promotes steel tube arch continuously.
The present invention is applicable to lower support type, half-through, the Deck Arch Bridges construction of no rack technique construction.For the bigger arch bridge of span, its superiority is more obvious, and is applicable to highway, municipal bridge construction that the duration is short.Adopt the present invention's construction not influence navigation; Can be used for the construction of single span or multispan; The lifting safety is higher; Lifting is subjected to wind effect little; Field welding is few, and the arch axis line is linear good; Crane capacity hangs much larger than cable; The construction equipment input is hung much smaller than cable; Construction period is short; Huge anchor ingot system need be set; Be applicable to all kinds of arch bridges.
Description of drawings
Accompanying drawing is an installation steps schematic diagram of the present invention.
The specific embodiment
Construction general arrangement and hanging device
1 construction general arrangement
Gate-type crane semiarch integral-hoisting steel-pipe arch is that every arch rib is divided into two lifting elements, and per 1/2 arch adopts two gantry cranes to lift by crane.Fixedly gantry crane is as lifting appliance in 1/2 span of arch, and movable gantry crane is as 1/2 arch arch springing lifting appliance.
2 hanging devices
2.1 fixing gantry crane
Fixedly gantry crane is made up of gantry crane, pile foundation support table basis and cable wind rope three parts.
1., gantry crane
The gantry crane overall height is determined according to steel tube arch spring of arch and lifting space, is generally meter lifting space (comprising spreader height), spring of arch+10.The gantry crane width determines according to bridge width, be generally bridge wide+4~6 meters.
Gantry crane is made up of column, crossbeam two parts.Gantry crane column and crossbeam can be assembled by universal rod body, also can adopt the formingspace trussed construction.Its form of fracture calculates according to hoisting weight to be determined.
A gantry crane hoisting weight can reach 600~800 tons.Promptly adopt four gantry crane integral lifting of half arch that the steel tube arch that weighs about 2000 tons can be installed.
2., gantry crane basis
Open cut foundation or pile foundation support table form of structure can be adopted according to lifting weight and geological condition in the gantry crane basis.For hoisting weight less can adopt open cut foundation, for the bigger then employing pile foundation support table form of structure of hoisting weight.
3., gantry crane cable wind rope
Cable wind rope is arranged on the gantry crane both sides, be divided into along bridge to two kinds of directions of direction across bridge.Be anchored in main pier cushion cap along bridge to cable wind rope.The direction across bridge cable wind rope is anchored in the suitable distance water of door frame both sides on the anchor.
According to the stressed size in the hoisting process, determine the quantity of cable wind rope.
2.2 movable gantry crane
Movable gantry crane except when the lifting steel tube arch arch rib as the back suspension centre, go back double as trigonum goods and materials lifting appliance.
Movable gantry crane hoisting weight is by fixedly gantry crane hoisting weight 1/2 design, and promptly its hoisting weight is by 300~400 tons of designs.
2.3 promote jack continuously
The gantry crane lifting means uses and promotes jack continuously, and its maximum lift weight can reach more than 1000 tons.During work, move back and forth drive moveable anchor clamping steel strand by two table oil top oil cylinders and promote steel tube arch continuously.
The gate-type crane semiarch integral-hoisting steel-pipe arch construction technology process is as follows:
Make in the factory 1/4 steel tube arch arch sections-→ construction arching interim gantry crane-→ 1/4 arch sections transportation-→ 1/4 steel tube arch sections jacking-→ two in place 1/4 an arch sections butt joint form 1/2 arch-→ 1/2 an arch sections promote the interim hinge pin of-→ 1/2 arch sections arch springing connect-→ two 1/2 arch closures-→ half range arch ring closure in addition-→ install wind brace-→ arch springing builds
Steel tube arch is set up concrete construction sequence
1.1 gantry crane setting and steel tube arch transportation by driving are in place
Whenever stride down stride the footpath 1/3 and 2/3 place be provided with a fixedly gantry crane, stride steel tube arch front end lifting appliance as 1/2, two arch springing places respectively establish a movable gantry crane, stride steel tube arch rear end lifting appliance as 1/2, the whole steel tube arch of striding is divided into four sections and processes in factory, after assembly unit welding and the passed examination, with the iron barge ship on the water transportation by driving to bridge location handle affairs establish earlier two fixedly under the gantry crane;
1.2 1/4 vault rises and butt joint
Two 1/4 arch closure end next doors are set up support and are used two table oils top jacking simultaneously steel tube arch on the iron barge ship, and successively increase to prop up and fill up to design height, after 1/4 steel tube arch jacking puts in place two ship tractions are docked, adjust the hull position, two 1/4 arch axis lines are adhered to specification, fixedly truss on two ships is connected, make two ship shape become whole;
1.3 1/4 arch closure is 1/2 arch
By oil top fine setting steel tube arch facade line style, make the accurate contraposition of steel tube arch, its axis and close up an absolute altitude and satisfy code requirement, with the arch abutment outward flange by the aligned in position during pre-assembly the in the factory, junction plate is installed, is carried out repetition measurement once more, after meeting the requirements fully it is welded on request, form 1/2 arch ring, welding comprises web member intersection, main chord tube butt joint circumferential weld, the welding of batten plate embedding benefit section.The moulding of half range main arch rib was waited to hang after butt welded seam carried out 100% ultrasonic testing/ ultrasonic examination passed examination after having welded.
1.4 1/2 arch section promotes
After the hull translation puts in place, on steel tube arch, install forward and backward suspender, at first fixedly promote the oil top on gantry crane and the movable gantry crane continuously by 1/2 good steel tube arch of 2 level liftings simultaneously of steel strand welding, after treating that steel tube arch has just broken away from support, only start the fixedly oily continuously top of the preceding suspension centre of gantry crane, slowly promote steel tube arch by steel strand; Treat that 1/2 arches upward and hangs axis when substantially parallel with theoretical axis, suspension centre oil top continuously behind the startup activity gantry crane, the front and back suspension centre promotes steel tube arch synchronously;
1.5 arch springing pin joint
The steel tube arch arch springing cuts with scissors when arriving design height temporarily, adjusts the arch springing position, penetrates interim hinge pin axle, slowly promotes preceding suspension centre and measures absolute altitude at any time, and the arch axis line is overlapped with theoretical axis, finishes semiarch and installs;
1.6 in like manner finish 1/2 arch installation in addition;
1.7 vault closes up
Promote the oil top by fixing gantry crane and accurately adjust vault absolute altitude and linear, survey temperature at that time, add the temperature correction value, according to the vault size, steel pipe is reserved in cutting and installation in position welds, and finishes arch ring and closes up;
1.8 cable wind rope is laid
After arch ring closes up,, 4 road cable wind ropes are set in the every side of arch ring in order to prevent bridge location place wind effect;
1.9 gantry crane and arch ring cable wind rope are removed
In like manner finish other one side steel tube arch and install, and the beam wind support is installed, after the two sides steel tube arch is stable, remove gantry crane and arch ring cable wind rope.
Claims (2)
1, gate-type crane semiarch integral-hoisting steel-pipe arch process is characterized in that: described technology comprises the steps:
1.1 gantry crane setting and steel tube arch transportation by driving are in place
Whenever stride down stride the footpath 1/3 and 2/3 place be provided with a fixedly gantry crane, stride steel tube arch front end lifting appliance as 1/2, two arch springing places respectively establish a movable gantry crane, stride steel tube arch rear end lifting appliance as 1/2, the whole steel tube arch of striding is divided into four sections and processes in factory, after assembly unit welding and the passed examination, with the iron barge ship on the water transportation by driving to bridge location handle affairs establish earlier two fixedly under the gantry crane;
1.2 1/4 vault rises and butt joint
Two 1/4 arch closure end next doors are set up support and are used two table oils top jacking simultaneously steel tube arch on the iron barge ship, and successively increase to prop up and fill up to design height, after 1/4 steel tube arch jacking puts in place two ship tractions are docked, adjust the hull position, two 1/4 arch axis lines are adhered to specification, fixedly truss on two ships is connected, make two ship shape become whole;
1.3 1/4 arch closure is 1/2 arch
By oil top fine setting steel tube arch facade line style, make the accurate contraposition of steel tube arch, its axis and close up an absolute altitude and satisfy code requirement, with the arch abutment outward flange by the aligned in position during pre-assembly the in the factory, junction plate is installed, is carried out repetition measurement once more, after meeting the requirements fully it is welded on request, form 1/2 arch ring, the moulding of half range main arch rib was waited to hang after butt welded seam carried out 100% ultrasonic testing/ ultrasonic examination passed examination after having welded;
1.4 1/2 arch section promotes
After the hull translation puts in place, on steel tube arch, install forward and backward suspender, at first fixedly promote the oil top on gantry crane and the movable gantry crane continuously by 1/2 good steel tube arch of 2 level liftings simultaneously of steel strand welding, after treating that steel tube arch has just broken away from support, only start the fixedly oily continuously top of the preceding suspension centre of gantry crane, slowly promote steel tube arch by steel strand; Treat that 1/2 arches upward and hangs axis when substantially parallel with theoretical axis, suspension centre oil top continuously behind the startup activity gantry crane, the front and back suspension centre promotes steel tube arch synchronously;
1.5 arch springing pin joint
The steel tube arch arch springing cuts with scissors when arriving design height temporarily, adjusts the arch springing position, penetrates interim hinge pin axle, slowly promotes preceding suspension centre and measures absolute altitude at any time, and the arch axis line is overlapped with theoretical axis, finishes semiarch and installs;
1.6 in like manner finish 1/2 arch installation in addition;
1.7 vault closes up
Promote the oil top by fixing gantry crane and accurately adjust vault absolute altitude and linear, survey temperature at that time, add the temperature correction value, according to the vault size, steel pipe is reserved in cutting and installation in position welds, and finishes arch ring and closes up;
1.8 cable wind rope is laid
After arch ring closes up,, 4 road cable wind ropes are set in the every side of arch ring in order to prevent bridge location place wind effect;
1.9 gantry crane and arch ring cable wind rope are removed
In like manner finish other one side steel tube arch and install, and the beam wind support is installed, after the two sides steel tube arch is stable, remove gantry crane and arch ring cable wind rope.
2, gate-type crane semiarch integral-hoisting steel-pipe arch process as claimed in claim 1, it is characterized in that: described gantry crane adopts fixedly gantry crane and movable gantry crane, the gantry crane overall height is meter lifting spaces, spring of arch+10, the gantry crane width be bridge wide+4~6 meters, a gantry crane hoisting weight can reach 600~800 tons, promptly adopts four gantry crane integral lifting of half arch that the steel tube arch that weighs about 2000~3000 tons can be installed; 300~400 tons of movable gantry crane hoisting weights; The gantry crane lifting means uses and promotes jack continuously, and its maximum lift weight can reach more than 1000 tons, during work, moves back and forth drive moveable anchor clamping steel strand by two table oil top oil cylinders and promotes steel tube arch continuously.
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CN110565527B (en) * | 2019-08-06 | 2021-03-19 | 中交第一航务工程局有限公司 | Method for installing prestressed T-beam on non-rotating synchronous double-lifting-hoisting sea |
CN111636306A (en) * | 2020-06-03 | 2020-09-08 | 中铁上海工程局集团有限公司 | Construction method for sectional assembly and integral lifting of large-span steel box arch rib |
CN111636306B (en) * | 2020-06-03 | 2022-06-03 | 中铁上海工程局集团有限公司 | Construction method for sectional assembly and integral lifting of large-span steel box arch rib |
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