CN104532748B - The floating jacking of a kind of super kiloton steel truss girder pushes away erection construction method - Google Patents
The floating jacking of a kind of super kiloton steel truss girder pushes away erection construction method Download PDFInfo
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- CN104532748B CN104532748B CN201410777870.XA CN201410777870A CN104532748B CN 104532748 B CN104532748 B CN 104532748B CN 201410777870 A CN201410777870 A CN 201410777870A CN 104532748 B CN104532748 B CN 104532748B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 179
- 239000010959 steel Substances 0.000 title claims abstract description 179
- 238000010276 construction Methods 0.000 title claims abstract description 37
- 238000007667 floating Methods 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000006243 chemical reaction Methods 0.000 claims abstract description 6
- 238000007689 inspection Methods 0.000 claims description 12
- 230000009471 action Effects 0.000 claims description 9
- 238000005086 pumping Methods 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 6
- 238000005260 corrosion Methods 0.000 claims description 5
- 230000007797 corrosion Effects 0.000 claims description 5
- 230000002159 abnormal effect Effects 0.000 claims description 3
- 230000002547 anomalous effect Effects 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 claims description 3
- 230000000916 dilatatory effect Effects 0.000 claims description 2
- 230000036244 malformation Effects 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 4
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- 230000008901 benefit Effects 0.000 abstract description 2
- 230000009467 reduction Effects 0.000 abstract description 2
- 238000013461 design Methods 0.000 description 9
- 238000012937 correction Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000011217 control strategy Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
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- 230000000052 comparative effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000009659 non-destructive testing Methods 0.000 description 1
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- 230000002393 scratching effect Effects 0.000 description 1
- 238000012916 structural analysis Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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Abstract
The present invention relates to technical field of construction, that the floating jacking of a kind of super kiloton steel truss girder pushes away erection construction method specifically, it is characterized in that the method is by complete spelling in first steel truss girder spelling place on the coast, utilize hydraulic jack successively incremeantal launching method vertical shift steel truss girder, make its cantilever appropriate, again steel truss girder one end is placed in the bolster bracket support system being formed by barge, barge draining rising, joist, continuing pushing tow steel truss girder advances, adjust in real time direction until put in place, barge water filling, conversion supporting, Dun Dingluoliang, erection support. The present invention compared with the existing technology, its advantage is: equipment is simple, easy to operate, and labour intensity is low, cost drops into low, efficiency of construction is high, is easy to promote, and does not damage river levee, iceound time of constructing is short, shipping is disturbed little, master operation can parallel operations as steel truss girder spelling, barge bracket, are conducive to the reduction of erection time.
Description
[technical field]
The present invention relates to technical field of construction, is that one is applicable to fast slow, the water of the navigable river depth of water specificallyThe floating jacking of super kiloton steel truss girder of constructing under the condition of the stable or complex geologic conditions in position pushes away erection construction sideMethod.
[background technology]
In steel truss girder installation process, construction method, crane barge construction method, outstanding are hung in domestic general employing gantry crane, travelingThe construction methods such as arm construction method, erection by longitudinal pulling method, traversing construction method, cable crane method, for span large andWhile crossing over the steel truss girder installation of navigable river, if adopt said method, the one, navigable river is busy, noAllow ship to take for a long time and do not allow temporary rest pier is set in river course, therefore said method is not suitable for suchThe construction of bridge environment of living in.
Danyang City's main bridge of people's bridge is designed to across footpath 104m steel truss girder, and the wide 32.9m of bridge floor adopts with montantHua Lunshi triangular web member System Design, main bridge is divided into left and right two width, and single width weight reaches 1300t, bridge site placeSunan Canal is one of national water transport main channel, is the important component part in canal, Hangzhoupro, capital, waterway planning gradeBe three grades, construction period will ensure Navigation in Navigable, and main bridge construction technical difficulty is large, and risk is high.
[summary of the invention]
The object of the invention is in order to ensure construction period Navigation in Navigable, adopt floating holder Incremental Launching Construction Technology, separateUnder this condition of having determined, large span is got over the construction difficult problem of kiloton steel truss girder installation in position, effectively shortened the duration,Reduce the impact of bridge construction on navigation, guaranteed bridge construction safety.
To achieve these goals, the floating jacking of a kind of super kiloton steel truss girder of design pushes away erection construction method, its spyLevy and be that the method is by complete spelling in first steel truss girder spelling place on the coast, utilizes hydraulic jack continuousPushing tow vertical shift steel truss girder, makes its cantilever appropriate, then steel truss girder one end is placed in to the bolster bracket being made up of bargeOn support system, barge draining rising, joist, continue pushing tow steel truss girder and advance, adjust direction in real time untilPut in place, barge water filling, conversion supporting, Dun Dingluoliang, erection support, described method comprises the following steps:
1). falsework putting up platform, described falsework putting up platform comprises that slideway is laid, steel truss girder spelling inspection,Slide block is installed, incremental launching device is installed, and steel truss girder spelling platform is divided into two limit rack platforms and a medium-height trestlePlatform, limit rack platform and medium-height trestle platform adopt steel-pipe pile and steel pipe post, steel-pipe pile and steel pipe post itBetween establish armored concrete expand basis, between steel pipe post, adopt equal leg angle to be welded into scissors diagonal brace and horizontal-associateSystem, steel pipe post top cross and H shaped steel is longitudinally set respectively as distributing crossbeam and end slipway beam;
2). barge is marched into the arena and is checked and accepted, and described barge is marched into the arena and checked and accepted and comprises the construction of direction positioning anchor, bargeWhole water ballasts, the dilatory inspection of barge are set up, injected to bolster bracket, sets up barge bolster bracket steel pipe support,At the hull of the barge panel keel place of putting more energy into, steel pipe falsework column is set, direction across bridge steel pipe falsework is establishedPut many steel pipe posts, vertical bridge is to adopting 3 row's steel pipe posts, and spacing is 360cm, between steel pipe post, establishesPut waling stripe and the bridging of single limb equal leg angle; Steel pipe post end adopts 16b channel-section steel horizon bar,Steel pipe post end face direction across bridge arranges longitudinal Two bors d's oeuveres HN700 × 300 shaped steel and distributes crossbeam, settles vertical slideway on itBeam, steel pipe post periphery arranges steel pipe diagonal brace;
3). after completing steps 1 and 2, pushing tow is set sliding on bolster bracket at steel truss girder spelling platform and as refutingRoad, by steel truss girder pushing tow cantilever, stressed slideway when pushing slide is steel truss girder pushing tow, is arranged on steel truss girder twoSide main truss center line bottom, pushing slide mechanism by the H shaped steel at steel truss girder spelling Platform pipe column top,Longitudinally vertical slipway beam, corrosion resistant plate, MGE self-lubricating plate, the pushing tow thousand of Two bors d's oeuveres HN700 × 300 type steel supportJin top, steel strand wires and rear anchor beam form;
4). equipment installation and adjustment a: top is respectively installed on bolster bracket at steel truss girder spelling platform and as refutingPush away jack, synchronism master station is placed on steel truss girder spelling vacant lot, connects oil circuit and the circuit of systemAfter, debug, jack is working properly when ensureing formal pushing tow; Start pumping plant, select manually operationPattern is controlled executive component and is stretched cylinder or the action of contracting cylinder on master station guidance panel, checks the action that it carries outWhether correct, the detecting element of adjustment stroke checkout gear, makes the contact of checkout gear and detects normal;
5). adjust barge and put in place and bracket absolute altitude;
6). barge draining joist;
7). pushing tow steel truss girder advances, and starts the vertical shift of pushing tow steel truss girder, adjusts direction in good time, continues pushing tow steelTrusses advances; Pushing tow steel truss girder puts in place, and now steel trussed beam cantilever is suitable, and barge sails precalculated position into, drainingRise, bolster bracket joist;
8). the barge water filling beam that falls, pier top steel buttress bolster;
9). withdraw from incremental launching device and barge, open navigation channel;
10). remove falsework and slideway, Dun Dingluoliang, erection support.
Pushing tow steel truss girder advances and specifically comprises:
1). before oil circuit is connected, move back anchor top simultaneously and retreat anchor top, start pumping plant, by front tool clamping piece and afterTool clamping piece backs down, pressurize simultaneously, and by oil circuit off-load, top anchor slab is return under spring action, and intermediate plate is pressedTightly, on the anchor slab of inspection top, whether each steel strand wires and anchor slab hole align, and ensure that steel strand wires do not intersect and turn round simultaneouslyTurn, finally use the each steel strand wires of manual strainer pretension, make each steel strand wires tightness basically identical, operationEach pumping plant, the each lifting jack steel twisted wire of pretension, makes each lifting jack steel twisted wire tightness basically identical;
2). steel strand wires pretension, first motionless to drawing with manually pulling steel strand wires, then use pushing tow jack manualOr automatic band is tightened to and only stays some radians, then make each pulling force basic with the single jack pretension of sinciput formula steel strand wiresConsistent;
3). pushing tow operation, first select manual mode, one by one by the piston on the forward and backward main top of pushing tow jackGet back to behind travel switch SQ1, SQ4 position, start manual pushing tow, master station operating personnel press " sinciputEnter " button, oil pump operating personnel adjust the work pressure limiting of overflow valve, note observing STRESS VARIATION, check eachForce structure deformation, if any report extremely immediately, also checks oil pump, pushing tow jack, front and back simultaneouslyWhether clamper, Pressure gauge, steel strand wires be abnormal;
4). after the slippage of manual operation pushing tow system traction steel truss girder starts, on inspection without ANOMALOUS VARIATIONS, withBe converted to automatic operational mode, carry out the automatic continuous jacking of steel truss girder.
Compared with the existing technology, its advantage is in the present invention:
1. equipment is simple, easy to operate, and labour intensity is low, and cost drops into low, and efficiency of construction is high, be easy to promote,Do not damage river levee, the iceound time of constructing is short, disturbs little to shipping;
2. master operation can parallel operations as steel truss girder spelling, barge bracket, are conducive to the reduction of erection time;
3. girder steel is in pushing tow process, and front end is subject to the bolster bearing bracket on barge, and rear end is supported by falsework,Take necessary technical measures to control the top to bottom, left and right, front and rear three-dimensional of barge bolster bracket fulcrum simultaneously,Ensure safety and the quality of construction operation;
4. buttress top arranges MGE self-lubricating plate slideway, and pushing tow horizontal force is less, adopts hydraulic jack topPush away equipment successively incremeantal launching method, equipment is light-duty easy, pushing tow starts and stop to control steadily, ensures interim falseworkStable, construction safety coefficient is high;
5. adopt structural analysis and computation software to set up performance analysis model, set early warning value, in pushing tow processReal-Time Monitoring steel truss girder line style, falsework displacement, according to software for calculation analysis result, adjust pushing tow state in time,Ensure that steel truss girder attitude meets the requirements.
[brief description of the drawings]
Fig. 1 is flow chart of steps of the present invention;
Fig. 2 is the front view of pushing slide in the present invention;
Fig. 3 is the side view of pushing slide in the present invention;
In figure: 1. slipway beam 2.MGE self-lubricating plate+corrosion resistant plate 3. steel pipe column top crossbeams 4.Steel pipe post;
[detailed description of the invention]
Below in conjunction with accompanying drawing, the invention will be further described, and the structure of this device and principle are to this specialtyPeople is very clearly. Should be appreciated that specific embodiment described herein is only in order to explain thisBright, be not intended to limit the present invention.
As shown in Figure 1, the present invention is transported to job site by steel girder member bar unit after factory process is good,Then on the falsework platform on riverbank, carry out spelling, assembled after also acceptance(check), adopt jack continuousThrustor carries out pushing tow, by MGE self-lubricating plate and the special carriage of corrosion resistant plate, by steel truss girderTo opposite bank jacking, reach after default cantilever amount, then steel truss girder one end is placed in to the bolster bracket being formed by bargeOn support system, barge draining rising, joist, continue pushing tow steel truss girder and advance, adjust direction in real time untilPut in place, barge water filling, conversion supporting, Dun Dingluoliang, erection support.
Concrete steps comprise:
1). steel truss girder spelling platform construction
Spelling platform divides two limit supports and a medium-height trestle, and limit rack platform adopts φ 600 × 10mm steel-pipe pileWith φ 478 × 8mm steel pipe post, medium-height trestle platform adopts φ 600 × 10mm steel-pipe pile and φ 478 × 8mm steelTube column. Between steel-pipe pile and column, establish 400 × 200 × 100cm armored concrete and expand basis, steel pipe is verticalBetween post, adopt ∠ 100 × 10mm equal leg angle to be welded into scissors diagonal brace and horizontal-associate system. Steel-pipe pile column top horizontal strokeTo and H shaped steel is longitudinally set respectively as distributing crossbeam and end slipway beam.
2). the construction of barge bolster bracket
Bolster bracket steel pipe support, arranges steel pipe falsework column at the hull of the barge panel keel place of putting more energy into,Direction across bridge steel pipe support arranges φ 478 × 8mm steel pipe post+2 φ 600 × 10mm steel pipe post+3 φ478 × 8mm steel pipe post+2 φ 600 × 10mm steel pipe post+φ 478 × 8mm steel pipe post, its spacingBe respectively 200cm and 342.5cm. Vertical bridge is to adopting 3 row's steel pipe posts, and spacing is 360cm. Between steel pipeWaling stripe and the bridging of single limb ∠ 100 × 10mm equal leg angle are set; Steel pipe post end adopts [16bChannel-section steel horizon bar. Steel pipe end face direction across bridge arranges shaped steel and distributes crossbeam, settles vertical slipway beam on it. Steel pipe is verticalPost periphery arranges φ 273 × 6mm steel pipe diagonal brace.
3). steel girder member bar unit factory inspection and acceptance and on-the-spot spelling
Steel girder member bar unit is transported to job site in factory's pretreatment and after processing, and carries out at the sceneSpelling, then completes the work such as spelling, Non-Destructive Testing and application of steel truss girder, finally according to design drawing andCarry out an acceptance inspection, steel truss girder spelling mainly adopts 250t crawler crane to lift spelling on spelling platform, strictUndertaken by design and code requirement, guarantee that spelling quality meets the demands.
4). pushing slide structure
On bolster bracket, pushing slide is set at steel truss girder spelling platform and as refuting, when slideway is steel truss girder pushing towStressed slideway, is arranged on main truss center line bottom, steel truss girder both sides, and pushing slide mechanism is put down by steel truss girder spellingPlatform buttress top H shaped steel, longitudinal Two bors d's oeuveres HN700 × 300 type steel support slipway beam, corrosion resistant plate, MGE are from profitSlide plate, pushing tow jack, steel strand wires and rear anchor beam form, and pushing slide structure is shown in Fig. 2.
Falsework and bolster bracket welding position, jack etc. are endured strict scrutiny before pushing tow, to important structureThe weld seam at position adopts method of detection to detect, and incremental launching device, except carrying out no-load running inspection, is also wantedSynchronism to each pushing tow facility is debugged.
5). equipment installation and debugging
A). a pushing tow jack of each installation on two platforms of design, synchronism master station is placed in steel purlinOn beam spelling vacant lot;
B). connect after the oil circuit and circuit of system, debug, jack work when ensureing formal pushing towNormally, start pumping plant, select manual mode of operation, on master station guidance panel, control executive component and stretch cylinderOr the action of contracting cylinder, checking that whether its action of carrying out is correct, the detecting element of adjustment stroke checkout gear, makesThe contact of checkout gear and detection are normal, after the manual test-run a machine of system completes, select automatic mode system, checkThe coordination of the each jack of system and synchronism, if do not met design requirement, should conscientiously search reason,Fix a breakdown, the action for the treatment of system is coordinated rear completely and is shown that system debug is normally qualified;
C). before pushing tow, also should check startup hydraulic power unit, regulate certain pressure, the flexible main oil of hydraulic jackCylinder, checks whether the oil pipe connection in A chamber, B chamber is correct, checks that can stop valve end corresponding oil cylinder;
D). after the detection of hydraulic pushing system equipment is errorless, start to try pushing tow. While starting to try pushing tow, hydraulic jackTop is stretched cylinder pressure and is raised gradually, is followed successively by 20%, 40% of required pressure, in the situation that Everything is fine,Can continue to be loaded into 60%, 80%, 90%, 95%, 100%, steel truss girder has just started to have and has suspended pushing tow when mobile and doIndustry, keeps hydraulic pushing device systems pressure, and hydraulic jack and device systems, structural system are carried out entirelyFace checks, in the situation that confirming that integrally-built stability and security are no problem definitely, could start formalPushing tow.
6). start pushing tow
Finish at slippage erection of equipment, truss member links fastening and falls frame after slide device, can carry outThe thrusting slip construction of truss-type bridges.
A). before oil circuit is connected, move back anchor top simultaneously and retreat anchor top, starting pumping plant, by front tool clamping piece and rear workTool intermediate plate backs down, pressurize simultaneously, and by oil circuit off-load, top anchor slab is return under spring action, intermediate plate is compressed,On the anchor slab of inspection top, whether each steel strand wires and anchor slab hole align, and ensure that steel strand wires do not intersect and reverse simultaneously,Finally use manual strainer or the each steel strand wires of miscellaneous equipment pretension, make each steel strand wires tightness basically identical,Operate each pumping plant, the each lifting jack steel twisted wire of pretension, makes each lifting jack steel twisted wire tightness basically identical;
B). steel strand wires pretension, first use artificial (approximately 3～5 people) to pull steel strand wires motionless to drawing, then with topPush away jack and be with to be manually or automatically tightened to and only stay some radians, then use the single jack pretension of sinciput formula steel strand wiresMake each basically identical get final product (the single pulling force of general control be at 30KN) of pulling force;
C). pushing tow operation, first select manual mode, one by one the piston on the forward and backward main top of pushing tow jack is returnedBehind travel switch SQ1, SQ4 position, start manual pushing tow, master station operating personnel press " front jacking "Button, oil pump operating personnel adjust the work pressure limiting of overflow valve, note observing STRESS VARIATION, check each stressedMalformation situation, if any report extremely immediately, also checks oil pump simultaneously, pushing tow top, and front and back clamper,Pressure gauge, whether steel strand wires are abnormal;
D). after the slippage of manual operation pushing tow system traction truss starts, on inspection without ANOMALOUS VARIATIONS, turn immediatelyChange to automatic operational mode, carry out the automatic continuous jacking of girder.
Because practice of construction operating mode structure stress when the pushing tow is complicated and changeable, for reducing to greatest extent imbalanceHorizontal pull, the harm that interim counter-force support is brought is larger, must take appropriate control strategy for this reason,For this engineering take " jacking force control be main, speed control be auxiliary, load is followed the trail of, balanced controlled "Control strategy, props up top of the trellis total pulling force as control taking interim counter-force, and the jacking force of pushing tow jack and speed are doneFor controlled quatity, the dual control of realizable force and speed, falsework pushes up uneven horizontal force and is controlled at 150kN, master controlThe tension of platform is 2MPa.
7). the satisfactory after correcting in pushing tow process
Design axis slip in order to ensure that beam is pressed, correction and guiding work are absolutely necessary, and are veryImportant work, just must adopt lateral deviation-correcting device to apply for effectively solving deflection problem in pushing tow processCross force is rectified a deviation, and this bridge adopts roller devices to rectify a deviation, and correction stress point is located at steel truss girder two ends.
In pushing tow, the off normal of elevation exists too, i.e. truss-type bridges bottom flexibility also must enter for this reasonRow correction, the method that mainly adopts the floating jacking of ship displacement to rise, general control entangles in downwarp 5cm left and rightPartially, forbidding scratching floating jacking pushes away.
8). support is removed and the high position beam that falls
Steel truss girder pushing tow, to design attitude and after being supported on temporary rest pier, starts to remove pushing slide and bottomSupport, starts to carry out the system conversion beam that falls after having removed, for ensure beam construction smoothly safety carry out,This bridge is selected the fall beam construction of the hydraulic synchronous control system of technique comparative maturity.
Embodiment 1
Danyang people's bridge, longspan steel truss girder incremental launching construction, the people of Danyang City bridge bridge site is positioned at Danyang CityZhongshan Road, crosses over Sunan Canal, the important component part in Shi Jinghang canal, this canal, and waterway planning grade isThree grades, because can not meeting this navigation class requirement, old bridge removes reconstruction, enter by city II level major trunk roads standardRow transformation. Danyang City's main bridge of people's bridge is across footpath 104m steel truss girder, and the wide 32.9m of bridge floor adopts with montantHua Lunshi triangular web member System Design, main bridge divides left and right two width, the high 10～15m of main truss, main truss centre-to-centre spacing15.7m, upper and lower string and end brace adopt box section, the wide 500mm in cross section, high 720mm, maximum thickness of slab50mm, factory's welding, splice at Nodes by high-strength bolt in building site, and all the other diagonal web members adopt H type cross section,Maximum thickness of slab 40mm, bridge floor is composite beam, is become bridge by the girder steel of bottom with bridge hundred plate superposed surfaces abovePanel is connected with longitudinal and transverse beam below by WELDING STUDS, the heavily about 1300t of single width steel truss girder.
Danyang people's bridge adopts the floating jacking method of taking off to construct, and spelling moulding bed and slippage slideway, water are established in bankIn establish barge bolster bracket one place, pushing tow order successively by west bank eastwards bank carry out. Steel truss girder is in factory processAfter completing, on the spelling moulding bed of west bank, carry out spelling to on-the-spot by Automobile Transportation. After completing, spelling starts to push upPush away construction, all pushing tow is withdrawn from barge bolster bracket after putting in place, removes tipping moulding bed and slideway system, thenAdjust linearly, through system conversion, erection support, construction completes.
Claims (2)
1. the floating jacking of super kiloton steel truss girder pushes away an erection construction method, it is characterized in that the method is by steel truss girder firstIn spelling place, spelling is complete on the coast, utilizes hydraulic jack successively incremeantal launching method vertical shift steel truss girder, makes it outstandingArm is appropriate, then steel truss girder one end is placed in barge bolster bracket support system, and barge draining is risen, holderBeam, continues pushing tow steel truss girder and advances, and adjusts direction in real time until put in place, barge water filling, conversion supporting,Dun Dingluoliang, erection support, described method comprises the following steps:
1). falsework putting up platform, described falsework putting up platform comprises that slideway is laid, steel truss girder spelling inspection,Slide block is installed, incremental launching device is installed, and steel truss girder spelling platform is divided in two limit rack platforms and oneBody panel, limit rack platform and medium-height trestle platform adopt steel-pipe pile and steel pipe post, and steel-pipe pile and steel pipe are verticalBetween post, establish armored concrete and expand basis, between steel pipe post, adopt equal leg angle to be welded into scissors diagonal braceAnd horizontal-associate system, steel pipe post top cross and H shaped steel is longitudinally set respectively as distributing crossbeam and longitudinally slidingRoad beam;
2). barge is marched into the arena and is checked and accepted, and described barge is marched into the arena and checked and accepted and comprises that the construction of direction positioning anchor, barge holdWhole water ballasts, the dilatory inspection of barge are set up, injected to beam bracket, sets up barge bolster bracket steel pipe support,Steel pipe falsework column is set, direction across bridge steel pipe falsework at the hull of the barge panel keel place of putting more energy intoMany steel pipe posts are set, and vertical bridge is to adopting 3 row's steel pipe posts, and spacing is 360cm, steel pipe post itBetween waling stripe and the bridging of single limb equal leg angle are set; Steel pipe post end adopts 16b channel-section steel waterFlat bar, steel pipe post end face direction across bridge arranges longitudinal Two bors d's oeuveres HN700 × 300 shaped steel and distributes crossbeam, peace on itPut vertical slipway beam, steel pipe post periphery arranges steel pipe diagonal brace;
3). after completing steps 1 and 2, on bolster bracket, pushing slide is set at steel truss girder spelling platform and as refuting,By steel truss girder pushing tow cantilever, stressed slideway when pushing slide is steel truss girder pushing tow, is arranged on steel truss girder both sidesMain truss center line bottom, pushing slide mechanism by the H shaped steel at steel truss girder spelling Platform pipe column top,Longitudinally vertical slipway beam, corrosion resistant plate, MGE self-lubricating plate, the pushing tow of Two bors d's oeuveres HN700 × 300 type steel supportJack, steel strand wires and rear anchor beam form;
4). equipment installation and adjustment a: pushing tow is respectively installed on bolster bracket at steel truss girder spelling platform and as refutingJack, synchronism master station is placed on steel truss girder spelling vacant lot, connects oil circuit and the circuit of systemAfter, debug, jack is working properly when ensureing formal pushing tow; Start pumping plant, select manually fortuneRow mode is controlled executive component and is stretched cylinder or the action of contracting cylinder on master station guidance panel, checks what it carried outMove whether correct, the detecting element of adjustment stroke checkout gear, make checkout gear contact and detect justOften;
5). adjust barge and put in place and bracket absolute altitude;
6). barge draining joist;
7). pushing tow steel truss girder advances, and starts the vertical shift of pushing tow steel truss girder, adjusts direction in good time, continues pushing tow steel purlinBeam advances; Pushing tow steel truss girder puts in place, and now steel trussed beam cantilever is suitable, and barge sails precalculated position into, drainingRise, bolster bracket joist;
8). the barge water filling beam that falls, pier top steel buttress bolster;
9). withdraw from incremental launching device and barge, open navigation channel;
10). remove falsework and slideway, Dun Dingluoliang, erection support.
2. the floating jacking of the super kiloton steel truss girder of one as claimed in claim 1 pushes away erection construction method, it is characterized in thatPushing tow steel truss girder advances and specifically comprises:
1). before oil circuit is connected, move back anchor top simultaneously and retreat anchor top, starting pumping plant, by front tool clamping piece and rear workTool intermediate plate backs down, pressurize simultaneously, and by oil circuit off-load, top anchor slab is return under spring action, and intermediate plate is pressedTightly, check on top anchor slab, whether each steel strand wires align with anchor slab hole, ensure simultaneously steel strand wires do not intersect withReverse, finally use the each steel strand wires of manual strainer pretension, make each steel strand wires tightness basically identical,Operate each pumping plant, the each lifting jack steel twisted wire of pretension, makes each lifting jack steel twisted wire tightness basically identical;
2). steel strand wires pretension, first motionless to drawing with manually pulling steel strand wires, then use pushing tow jack manually orAutomatic band is tightened to and only stays some radians, then makes each Gen Laliji with the single jack pretension of sinciput formula steel strand wiresThis is consistent;
3). pushing tow operation, first select manual mode, one by one the piston on the forward and backward main top of pushing tow jack is returnedBehind travel switch SQ1, SQ4 position, start manual pushing tow, master station operating personnel press " front jacking "Button, oil pump operating personnel adjust the work pressure limiting of overflow valve, note observing STRESS VARIATION, check and are respectively subject toPower malformation situation, if any report extremely immediately, also checks oil pump, pushing tow jack, front and back simultaneouslyWhether clamper, Pressure gauge, steel strand wires be abnormal;
4). after the slippage of manual operation pushing tow system traction steel truss girder starts, on inspection without ANOMALOUS VARIATIONS, immediatelyBe converted to automatic operational mode, carry out the automatic continuous jacking of steel truss girder.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410777870.XA CN104532748B (en) | 2014-12-15 | 2014-12-15 | The floating jacking of a kind of super kiloton steel truss girder pushes away erection construction method |
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| CN201410777870.XA CN104532748B (en) | 2014-12-15 | 2014-12-15 | The floating jacking of a kind of super kiloton steel truss girder pushes away erection construction method |
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| CN104532748A CN104532748A (en) | 2015-04-22 |
| CN104532748B true CN104532748B (en) | 2016-05-18 |
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| CN105350459B (en) * | 2015-11-20 | 2017-03-22 | 中建交通建设集团有限公司 | Large steel beam gliding device and construction method thereof |
| CN105544412B (en) * | 2016-02-01 | 2017-04-19 | 中铁四局集团钢结构有限公司 | Incremental launching construction method for three-main-truss rigid suspension cable stiffening continuous steel truss girder with stiffening chord |
| CN106087771B (en) * | 2016-08-17 | 2018-04-03 | 中铁二十局集团第一工程有限公司 | Large span bias Recumbent steel box tied arch bridge Buoys arrangement construction technology |
| CN106120565B (en) * | 2016-08-17 | 2018-06-05 | 中铁二十局集团第一工程有限公司 | Large span bias Recumbent steel box tied arch bridge Buoys arrangement construction system |
| CN106120567B (en) * | 2016-08-17 | 2018-04-03 | 中铁二十局集团有限公司 | Large span bias Recumbent steel box tied arch bridge float-dragging construction method |
| CN107130524A (en) * | 2017-06-14 | 2017-09-05 | 中铁二十二局集团第四工程有限公司 | Steel case arch bridge faces across pre-splicing rear anchor pushing tow system and method |
| CN107905117A (en) * | 2017-12-21 | 2018-04-13 | 中国铁建大桥工程局集团有限公司 | Suitable for high-block bridge degree steel truss girder bridge push construction method |
| CN111424526B (en) * | 2020-03-04 | 2021-07-06 | 广西北投公路建设投资集团有限公司 | Hydraulic supporting system for corrugated steel web box girder bridge |
| CN112030776A (en) * | 2020-08-25 | 2020-12-04 | 中铁大桥局第七工程有限公司 | Bridge floating-towing erection method |
| CN113699894A (en) * | 2021-09-27 | 2021-11-26 | 中国能源建设集团安徽电力建设第一工程有限公司 | Construction method of complicated navigation water area widening and height changing steel box girder support system |
| CN114457681A (en) * | 2021-12-27 | 2022-05-10 | 江苏沪宁钢机股份有限公司 | Sliding floating support equipment for bridge engineering and working method thereof |
| CN114790696B (en) * | 2022-04-27 | 2023-10-27 | 中铁重工有限公司 | Construction method for erecting and falling curved steel box girder |
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| KR100665680B1 (en) * | 2006-03-20 | 2007-01-09 | (주)청석엔지니어링 | Bridge construction method by incremental launching of long span superstructure |
| JP2008057243A (en) * | 2006-08-31 | 2008-03-13 | Penta Ocean Construction Co Ltd | Method and device for managing building of bridge |
| CN201212129Y (en) * | 2008-06-25 | 2009-03-25 | 中铁宝桥股份有限公司 | Large steel box girder barge transport frame for steel structure bridge |
| CN101476291B (en) * | 2009-01-21 | 2011-04-06 | 中铁一局集团有限公司 | Segment-assembling simply supported box girder movable falsework construction method |
| CN101560752A (en) * | 2009-04-02 | 2009-10-21 | 中铁十局集团有限公司 | Construction method for erecting steel truss girder on uplift pushing tow |
| CN202017181U (en) * | 2011-04-14 | 2011-10-26 | 中铁二十局集团第六工程有限公司 | Falsework for constructing steel and concrete combined beam crossing over conventional route and arranged parallel to existing line |
| CN104195956B (en) * | 2014-09-11 | 2016-09-07 | 中铁八局集团第一工程有限公司 | Falsework formula waters continuous beam cast-in-place support and building method thereof |
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Address after: No.278, JIANGCHANG Third Road, Zhabei District, Shanghai 200436 Patentee after: SHANGHAI CIVIL ENGINEERING Co.,Ltd. OF CREC Patentee after: China Railway Municipal Environmental Construction Co.,Ltd. Address before: No.278, JIANGCHANG Third Road, Zhabei District, Shanghai 200436 Patentee before: SHANGHAI CIVIL ENGINEERING Co.,Ltd. OF CREC Patentee before: China Railway Shanghai Engineering Bureau Group Municipal Engineering Co.,Ltd. |
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