CN104480868A - Beam detaching method for road bridge overpassing operation railway - Google Patents
Beam detaching method for road bridge overpassing operation railway Download PDFInfo
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- CN104480868A CN104480868A CN201410761372.6A CN201410761372A CN104480868A CN 104480868 A CN104480868 A CN 104480868A CN 201410761372 A CN201410761372 A CN 201410761372A CN 104480868 A CN104480868 A CN 104480868A
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- bridge
- cutting
- bridge erector
- seam
- bale handle
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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
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
Abstract
The invention discloses a beam detaching method for a road bridge overpassing an operation railway, and mainly aims to solve the problem that operation safety of wired travelling cranes and wired railways cannot be ensured in the conventional beam detaching method. The method comprises the following steps: mounting an insulating casing on a contact net carrier cable below an existing road bridge through six V-stop points to isolate high tension electricity, and replacing a contact net insulator close to the edge of a beam; detaching a bridge crossing protection wall from a railway crossing part, and performing border protection by using an existing protection wall on a bridge deck and a newly-added fine-mesh protection steel wire mesh; performing hinge joint cutting on a beam body; performing beam hoisting and detachment: detaching side beams and middle beams in sequence through the processes of lifting beams at appropriate positions, transporting the beams, retreating the beams, moving back through holes and the like during detachment of a road bridge through a bridge girder erection machine. The method has the advantages that the safety of the wired traveling cranes is ensured, and interference to wired railway operation is lowered to the maximum extent.
Description
Technical field:
Beam method torn open by the road bridge that the present invention relates to across railway in operation.
Background technology:
Along with national transportation network development, railway span highway, highway generally occur across Railway situation, ensure that operating line traffic safety is technical controlling emphasis in construction.Remove above railway in bridge construction process, there is both wired interior high-altitude junk, personnel's material and invade limit, various pipeline along the line is damaged and affect both hazards such as cable architecture.In order to avoid or the generation of case of farthest preventing accident, guarantee both wired traffic safeties.Must abide by the principle:
Guarantee both wired traffic safeties and reduce the interference to Existing Railway Line operation to greatest extent.Above railway, bridging toughening security risk is mainly fall damage existing railway equipment and the traffic safeties such as construction high and medium personnel, equipment, material, higher to railway transportation harmful grade.And also do not have ripe technology to solve the problems referred to above at present.
Summary of the invention:
Technical problem to be solved by this invention be to provide a kind of on tear beam method open across the road bridge of railway in operation, it can be guaranteed both wired traffic safeties and reduce the interference to Existing Railway Line operation to greatest extent.
For achieving the above object, the technical solution used in the present invention is:
It comprises the steps:
1 preparation of construction: first utilize 6 V rest points to OCS Messenger Wire installing insulating sleeve pipe under existing road bridge, isolates high-tension electricity, each 30m of installation length uplink and downlink; The two place's contact net insulators closing on beam edge are changed simultaneously.
2 remove across rail segment spanning protecting wall:
After highway breaks, utilize the existing protecting wall of bridge floor and newly-increased one deck detailed catalogue protection wire gauze (the long 40m of protective screening, high 1.5m, second respectively establishes 1 road across both sides) do and face frontier defense and protect, when preventing cutting bridge floor fine grained chippings and other foreign material fall to both wired on, affect operation security.
Three road anti-collision walls of bridge floor all need to remove, and middle anti-collision wall is not connected with beam face, therefore carry out directly removing outside point.Both sides anti-collision wall is first fixed in rear point and is removed.In order to reduce, block number of times and consider can parallel construction, and both sides anti-collision wall is removed and installed public uplink and downlink V with insulation sleeve and stop, and removes 10m at every turn.
For preventing it from toppling during dismounting, be first greater than top surface of the beam implantation stone bolt in 6m apart from side bar, be firmly connected with stone bolt by side bar protective guard with Φ 8mm wire rope, to drawing spacing >6m, every 3m is arranged together.Then cut anti-collision wall, Cutting Length 2m/ section, entirety is hung and is removed.
3 beam body hinge seaming and cutting are cut:
Bridge floor is bituminous concrete, and the reinforcing bar and the concrete that only beam are stitched position during Demolition Construction cut, back bridge deck pavement (not cutting) and corresponding plate-girder overall pulling down.Hinge seam between fine strain of millet and beam is C50 concrete, is provided with reinforcing bar in the pave-load layer of beam face.For preventing jeopardizing both wired driving and installation security during cutting, upper across the beam in both wired scopes between longitudinally hinge seam all use diamond barrel saw auger gold conjugate hard rock dish-style saw blade cutting machine to construct, the blind area of cutting construction can be eliminated.
Cutting machine is made up of main body, dish-style cutting blade, walking guide rail and hydraulic oil pump, and working hole adopts water cooling.Reinforcing bar in cutting process in concrete directly cuts off and need not cut separately and fuse.Under specific requirement is shown in:
Cutting sequence: first at beam face unwrapping wire before construction, determine hinge seam axis particular location, be ensure the safety in work progress, whole cutting process follows by side to opposite side, order from top to bottom and going, and does not destroy the stability of beam body.
Before tearing beam open, first utilize uplink and downlink V to stop cutting respectively first beam and be stitched to the 4th road beam seam, utilize when tearing beam open and tear beam blocking time open and cut the 5th road beam again and be stitched to the tenth road beam seam.
For the entirety of beam body is firm, concrete chain cutter is adopted to cut open the concrete of all beam body hinge seams, the correspondence both about reserved long scope of 100cm in wired Liang Xian center interior hinge seam can not be cut, and after Bridge Erector is in place, does cutting process again after beam body being winched to stress with Bridge Erector.Then beam body is played sling cart, be transported to and process away from both wired appointment spoil disposal area.
Second across in hinge seam cutting process, for protecting both Line Contacts nets, Hoisting Security protection boatswain chair need be shifted to an earlier date in corresponding contact net lines position under beam, 5 × 6cm lumps of wood surrounding edge the process of protection boatswain chair surrounding, prevents cutting, cuts concrete disintegrating slag that wet seam produces, mud arbitrarily flows on railway equipment.Process in advance outside the venue, scene of transporting to directly lifts.
Protection boatswain chair adopts bamboo slab rubber to manufacture, and stretching lower nylon rope from the hole for hoist bored in the point of skylight ties down boatswain chair fining twisted steel, the lifting boatswain chair cavity that extremely pre-subdrilling is complete, cuts do security protection to cutting with scissors seaming and cutting above contact net.
After cutting hinge seam, also need bore hanging beam hole at beam seam place, every sheet beam arranges four bale handle holes, and being holed by four Φ 10cm and form in each bale handle hole, is respectively 50cm, 100 with beam-ends distance
cm。For ease of beam, use cutting machine to be cut by beam-ends head 10cm place concrete, and artificial chisel is except clean.
After beam seaming and cutting remove, check in seam with or without the foreign material such as broken concrete, batten.Confirm to remove totally, cover beam seam with wide 30cm plastic plate, plastic plate both sides M7.5 mortar is fixed,
Prevent construction water or other foreign material from beam seam drop down onto both wired, affect train operation safety.
4 beam liftings are removed:
The Kong Liang of upper spanning existing railway, for guaranteeing both wired operation securities, need remove during dismounting in point, blocks and tears beam open, each 120 minutes, block dismounting 1 beam at every turn according to dismounting quantity determination frequency of power cut.
Bridge Erector is selected:
-20 grades, automobile is no more than in order to meet bridge load, trailer-100 requirement, Bridge Erector leg location must fall within bent cap or beam-ends head, requires Bridge Erector, girder length can adjust, and middle leg location can change the hole of satisfied three kinds of different lengths across tearing beam open and task of setting a roof beam in place.
Remove beam process:
Bridge Erector remove road bridge be divided into bale handle in place, Yun Liang, move back beam, after move past several techniques such as hole, by first tearing side bar open during dismounting, after tear the sequence of construction of central sill open, Specific construction is as follows:
(1) bale handle: Bridge Erector highway subgrade section spelling group well after, be linked togather with Bridge Erector handlebar day after tomorrow Bridge Erector and counterweight, then with skate, rear overhead traveling crane be fixed on Bridge Erector overhead crane orbit.Rear overhead traveling crane hooks up, and Bridge Erector front is lifted.Whole like this bridge formation weight all concentrates on rear support leg, and synchronously start motor and fortune beam traction windlass on rear supporting leg of bridge erecting machine roller box, bridge formation face can move forward to 2# pier correspondence position.When front support leg is from front cross moving track about 0.5 meter, halt, the front leg strut position line is released by technician to pier, by an off the hook adjustment of overhead traveling crane after Bridge Erector, when making front leg strut higher than front cross moving track about 20cm, Bridge Erector continues to move ahead, and front leg strut arrives after above cross moving track, hook under overhead traveling crane after Bridge Erector, front outrigger for bridge girder erection machine drops on cross moving track.Remove counterweight beam, withstand on rear support leg jack-up near trailing wheel case with hydraulic jack, after roller box 90-degree rotation, cross moving track is placed on immediately below roller box.Jack return, makes trailing wheel drop on rear cross moving track.Bridge Erector is the dynamic row of left and right empty wagons examination on cross moving track, and adjustment cross moving track distance, prepares bale handle.Traversing Bridge Erector and bale handle dolly, just treat lifting beam, and the lifting eye bored at beam-ends puts on wire rope, installs special hanger, adopts wire rope by overall for beam body bag pocket lifting.First beam up and down and support position, guarantees that it disconnects completely with adjacent structure thing up and down to arrange full-time staff to check before bale handle, ensures the success of disposable bale handle.
First use Bridge Erector, the lifting eye bored at beam-ends puts on wire rope, adopts wire rope by overall for beam body bag pocket lifting, lifts wire rope.The operation of side bar bale handle is started after laying down fixing measure.When central sill is removed, after Bridge Erector is in place, after beam body being winched to stress with Bridge Erector, hinge in the long scope of 100cm reserved in the middle part of beam is stitched (in point) cutting, carry out the operation of central sill bale handle.
(2) beam is transported: move to the first hole beam-ends after bale handle dolly, two columns are set in Bridge Erector lower rear, in case Bridge Erector rear portion is stressed excessive when a dolly is transported on metapore beam.Every platform Beam transportation vehicle distance beam end about 3 meters is parked.When Yun Liang rear portion arrives metapore beam-ends, halt, slowly fall, fall within Beam transportation vehicle, Beam transportation vehicle starts and moves simultaneously with front overhead traveling crane, when waiting front overhead traveling crane to arrive above fortune beam trailer, beam is fallen to being placed on fortune beam trailer, the manufactured iron in beam two ends supports, and is fixed on flat car for transport of sills, with flat car for transport of sills, beam is transported to spoil disposal area with 3 tons of jacks.After retrogressing puts in place, beam to be reduced before traversing, the stability of Bridge Erector when which enhancing traversing.
(3) retreat via hole: after the first hole beam has all been torn open, can prepare to retreat via hole.After counterweight beam is transported to position, extend fortune beam orbit in a rear bridge face.To rear beam-ends, with jack rear support leg jack-up, roller box 90-degree rotation, namely with fortune beam orbit direction one to, jack return, rear support leg drops on fortune beam orbit, after walking to after Bridge Erector above a hole, hole.When retreating via hole, whole bridge formation face weight all concentrates in rear support leg, and rear support leg is stressed larger, so Bridge Erector retrogressing hole is out-of-date, track must be smooth, will pad below, and the left and right discrepancy in elevation must not more than 10mm.Stringent synchronization wanted by the rear roller box speed of service and traction windlass.
(4) all beam slabs are removed and are all adopted Bridge Erector to carry out monolithic whole dismounting.When lifting dismounting residue two panels beam, first tackling the beam body torn open afterwards and carrying out supporting, when guaranteeing that beam body is stablized, then starting to lift by crane another sheet beam body.When removing last a slice beam, first with Bridge Erector, beam body is winched to stress, after striking, lift by crane last sheet beam body again.
Advantage of the present invention is: remove in bridge construction process above railway, can guarantee both wired traffic safeties and reduce the interference to Existing Railway Line operation to greatest extent, ensure construction safety, and speed of application be fast.
Detailed description of the invention:
It comprises the steps:
Preparation of construction: first utilize 6 V rest points to OCS Messenger Wire installing insulating sleeve pipe under existing road bridge, isolates high-tension electricity, each 30m of installation length uplink and downlink; The two place's contact net insulators closing on beam edge are changed simultaneously.
Remove across rail segment spanning protecting wall:
After highway breaks, utilize the existing protecting wall of bridge floor and newly-increased one deck detailed catalogue protection wire gauze (the long 40m of protective screening, high 1.5m, second respectively establishes 1 road across both sides) do and face frontier defense and protect, when preventing cutting bridge floor fine grained chippings and other foreign material fall to both wired on, affect operation security.
Three road anti-collision walls of bridge floor all need to remove, and middle anti-collision wall is not connected with beam face, therefore carry out directly removing outside point.Both sides anti-collision wall is first fixed in rear point and is removed.In order to reduce, block number of times and consider can parallel construction, and both sides anti-collision wall is removed and installed public uplink and downlink V with insulation sleeve and stop, and removes 10m at every turn.
For preventing it from toppling during dismounting, be first greater than top surface of the beam implantation stone bolt in 6m apart from side bar, be firmly connected with stone bolt by side bar protective guard with Φ 8mm wire rope, to drawing spacing >6m, every 3m is arranged together.Then cut anti-collision wall, Cutting Length 2m/ section, entirety is hung and is removed.
The seaming and cutting of beam body hinge are cut:
Bridge floor is bituminous concrete, and the reinforcing bar and the concrete that only beam are stitched position during Demolition Construction cut, back bridge deck pavement (not cutting) and corresponding plate-girder overall pulling down.Hinge seam between fine strain of millet and beam is C50 concrete, is provided with ф 12 reinforcing bar in the pave-load layer of beam face.For preventing jeopardizing both wired driving and installation security during cutting, upper across the beam in both wired scopes between longitudinally hinge seam all use diamond barrel saw auger gold conjugate hard rock dish-style saw blade cutting machine to construct, the blind area of cutting construction can be eliminated.
Cutting machine is made up of main body, dish-style cutting blade, walking guide rail and hydraulic oil pump, and working hole adopts water cooling.Reinforcing bar in cutting process in concrete directly cuts off and need not cut separately and fuse.Under specific requirement is shown in:
Cutting sequence: first at beam face unwrapping wire before construction, determine hinge seam axis particular location, be ensure the safety in work progress, whole cutting process follows by side to opposite side, order from top to bottom and going, and does not destroy the stability of beam body.
Before tearing beam open, first utilize uplink and downlink V to stop cutting respectively first beam and be stitched to the 4th road beam seam, utilize when tearing beam open and tear beam blocking time open and cut the 5th road beam again and be stitched to the tenth road beam seam.
For the entirety of beam body is firm, concrete chain cutter is adopted to cut open the concrete of all beam body hinge seams, the correspondence both about reserved long scope of 100cm in wired Liang Xian center interior hinge seam can not be cut, and after Bridge Erector is in place, does cutting process again after beam body being winched to stress with Bridge Erector.Then beam body is played sling cart, be transported to and specify spoil disposal area to process.
Second across in hinge seam cutting process, for protecting both Line Contacts nets, Hoisting Security protection boatswain chair need be shifted to an earlier date in corresponding contact net lines position under beam, 5 × 6cm lumps of wood surrounding edge the process of protection boatswain chair surrounding, prevents cutting, cuts concrete disintegrating slag that wet seam produces, mud arbitrarily flows on railway equipment.Process in advance outside the venue, scene of transporting to directly lifts.
Protection boatswain chair adopts bamboo slab rubber to manufacture, and stretching lower nylon rope from the hole for hoist bored in the point of skylight ties down boatswain chair fining twisted steel, the lifting boatswain chair cavity that extremely pre-subdrilling is complete, cuts do security protection to cutting with scissors seaming and cutting above contact net.
After cutting hinge seam, also need bore hanging beam hole at beam seam place, every sheet beam arranges four bale handle holes, and being holed by four Φ 10cm and form in each bale handle hole, is respectively 50cm, 100 with beam-ends distance
cm。For ease of beam, use cutting machine to be cut by beam-ends head 10cm place concrete, and artificial chisel is except clean.
After beam seaming and cutting remove, check in seam with or without the foreign material such as broken concrete, batten.Confirm to remove totally, cover beam seam with wide 30cm plastic plate, plastic plate both sides M7.5 mortar is fixed,
Prevent construction water or other foreign material from beam seam drop down onto both wired, affect train operation safety.
Beam lifting is removed:
The Kong Liang of upper spanning existing railway, for guaranteeing both wired operation securities, need remove during dismounting in point, blocks and tears beam open, each 120 minutes, block dismounting 1 beam at every turn according to dismounting quantity determination frequency of power cut.
Bridge Erector is selected:
-20 grades, automobile is no more than in order to meet bridge load, trailer-100 requirement, Bridge Erector leg location must fall within bent cap or beam-ends head, requires Bridge Erector, girder length can adjust, and middle leg location can change the hole of satisfied three kinds of different lengths across tearing beam open and task of setting a roof beam in place.
Remove beam process:
Bridge Erector remove road bridge be divided into bale handle in place, Yun Liang, move back beam, after move past several techniques such as hole, by first tearing side bar open during dismounting, after tear the sequence of construction of central sill open, Specific construction is as follows:
(1) bale handle: Bridge Erector highway subgrade section spelling group well after, be linked togather with Bridge Erector handlebar day after tomorrow Bridge Erector and counterweight, then with skate, rear overhead traveling crane be fixed on Bridge Erector overhead crane orbit.Rear overhead traveling crane hooks up, and Bridge Erector front is lifted.Whole like this bridge formation weight all concentrates on rear support leg, and synchronously start motor and fortune beam traction windlass on rear supporting leg of bridge erecting machine roller box, bridge formation face can move forward to 2# pier correspondence position.When front support leg is from front cross moving track about 0.5 meter, halt, the front leg strut position line is released by technician to pier, by an off the hook adjustment of overhead traveling crane after Bridge Erector, when making front leg strut higher than front cross moving track about 20cm, Bridge Erector continues to move ahead, and front leg strut arrives after above cross moving track, hook under overhead traveling crane after Bridge Erector, front outrigger for bridge girder erection machine drops on cross moving track.Remove counterweight beam, withstand on rear support leg jack-up near trailing wheel case with hydraulic jack, after roller box 90-degree rotation, cross moving track is placed on immediately below roller box.Jack return, makes trailing wheel drop on rear cross moving track.Bridge Erector is the dynamic row of left and right empty wagons examination on cross moving track, and adjustment cross moving track distance, prepares bale handle.Traversing Bridge Erector and bale handle dolly, just treat lifting beam, and the lifting eye bored at beam-ends puts on wire rope, installs special hanger, adopts wire rope by overall for beam body bag pocket lifting.First check before bale handle that beam up and down and support position, guarantees that it disconnects completely with adjacent structure thing up and down, ensure the success of disposable bale handle.
First use Bridge Erector, the lifting eye bored at beam-ends puts on wire rope, adopts wire rope by overall for beam body bag pocket lifting, lifts wire rope.The operation of side bar bale handle is started after laying down fixing measure.When central sill is removed, after Bridge Erector is in place, after beam body being winched to stress with Bridge Erector, hinge in the long scope of 100cm reserved in the middle part of beam is stitched (in point) cutting, carry out the operation of central sill bale handle.
(2) beam is transported: move to the first hole beam-ends after bale handle dolly, two columns are set in Bridge Erector lower rear, in case Bridge Erector rear portion is stressed excessive when a dolly is transported on metapore beam.Every platform Beam transportation vehicle distance beam end about 3 meters is parked.When Yun Liang rear portion arrives metapore beam-ends, halt, slowly fall, fall within Beam transportation vehicle, Beam transportation vehicle starts and moves simultaneously with front overhead traveling crane, when waiting front overhead traveling crane to arrive above fortune beam trailer, beam is fallen to being placed on fortune beam trailer, the manufactured iron in beam two ends supports, and is fixed on flat car for transport of sills, with flat car for transport of sills, beam is transported to spoil disposal area with 3 tons of jacks.After retrogressing puts in place, beam to be reduced before traversing, the stability of Bridge Erector when which enhancing traversing.
(3) retreat via hole: after the first hole beam has all been torn open, can prepare to retreat via hole.After counterweight beam is transported to position, extend fortune beam orbit in a rear bridge face.To rear beam-ends, with jack rear support leg jack-up, roller box 90-degree rotation, namely with fortune beam orbit direction one to, jack return, rear support leg drops on fortune beam orbit, after walking to after Bridge Erector above a hole, hole.
(4) all beam slabs are removed and are all adopted Bridge Erector to carry out monolithic whole dismounting.When lifting dismounting residue two panels beam, first tackling the beam body torn open afterwards and carrying out supporting, when guaranteeing that beam body is stablized, then starting to lift by crane another sheet beam body.When removing last a slice beam, first with Bridge Erector, beam body is winched to stress, after striking, lift by crane last sheet beam body again.
Claims (1)
1. beam method torn open by the road bridge gone up across railway in operation, it is characterized in that: comprise the steps:
Preparation of construction: first utilize 6 V rest points to OCS Messenger Wire installing insulating sleeve pipe under existing road bridge, isolates high-tension electricity, each 30m of installation length uplink and downlink; The two place's contact net insulators closing on beam edge are changed simultaneously;
Remove across rail segment spanning protecting wall:
After highway breaks, utilize the existing protecting wall of bridge floor and newly-increased one deck detailed catalogue protection wire gauze to do and face frontier defense and protect;
Three road anti-collision walls of bridge floor all need to remove, and middle anti-collision wall is not connected with beam face, therefore carry out directly removing outside point; Both sides anti-collision wall is removed in first fixing and putting afterwards; Both sides anti-collision wall dismounting is installed public uplink and downlink V with insulation sleeve and is stopped, and removes 10m at every turn;
First being greater than top surface of the beam implantation stone bolt in 6m apart from side bar during dismounting, be firmly connected with stone bolt by side bar protective guard with Φ 8mm wire rope, to drawing spacing >6m, every 3m arranges together; Then cut anti-collision wall, Cutting Length 2m/ section, entirety is hung and is removed;
The seaming and cutting of beam body hinge are cut:
The reinforcing bar and the concrete that only beam are stitched position during bridge floor Demolition Construction cut, back bridge deck pavement and corresponding plate-girder overall pulling down; Hinge seam between fine strain of millet and beam is C50 concrete, is provided with reinforcing bar in the pave-load layer of beam face; Upper across the beam in both wired scopes between longitudinally hinge seam all use diamond barrel saw auger gold conjugate hard rock dish-style saw blade cutting machine to construct;
Cutting machine is made up of main body, dish-style cutting blade, walking guide rail and hydraulic oil pump, and working hole adopts water cooling; Reinforcing bar in cutting process in concrete directly cuts off and need not cut separately and fuse; Under specific requirement is shown in:
Cutting sequence: first at beam face unwrapping wire before construction, determine hinge seam axis particular location, be ensure the safety in work progress, whole cutting process follows by side to opposite side, order from top to bottom and going, and does not destroy the stability of beam body;
Before tearing beam open, first utilize uplink and downlink V to stop cutting respectively first beam and be stitched to the 4th road beam seam, utilize when tearing beam open and tear beam blocking time open and cut the 5th road beam again and be stitched to the tenth road beam seam;
For the entirety of beam body is firm, concrete chain cutter is adopted to cut open the concrete of all beam body hinge seams, the correspondence both about reserved long scope of 100cm in wired Liang Xian center interior hinge seam can not be cut, and after Bridge Erector is in place, does cutting process again after beam body being winched to stress with Bridge Erector; Then beam body is played sling cart, be transported to and specify spoil disposal area to process;
Second across in hinge seam cutting process, need shift to an earlier date Hoisting Security protection boatswain chair in corresponding contact net lines position, the 5 × 6cm lumps of wood surrounding edge process of protection boatswain chair surrounding under beam;
Protection boatswain chair adopts bamboo slab rubber to manufacture, and stretching lower nylon rope from the hole for hoist bored in the point of skylight ties down boatswain chair fining twisted steel, the lifting boatswain chair cavity that extremely pre-subdrilling is complete, cuts do security protection to cutting with scissors seaming and cutting above contact net;
After cutting hinge seam, also need bore hanging beam hole at beam seam place, every sheet beam arranges four bale handle holes, and being holed by four Φ 10cm and form in each bale handle hole, is respectively 50cm, 100 with beam-ends distance
Cm; Use cutting machine to be cut by beam-ends head 10cm place concrete, and artificial chisel is except clean;
After beam seaming and cutting remove, check in seam with or without the foreign material such as broken concrete, batten; Confirm to remove totally, cover beam seam with wide 30cm plastic plate, plastic plate both sides M7.5 mortar is fixed;
Beam lifting is removed:
The Kong Liang of upper spanning existing railway, for guaranteeing both wired operation securities, need remove during dismounting in point, blocks and tears beam open, each 120 minutes, block dismounting 1 beam at every turn according to dismounting quantity determination frequency of power cut;
Remove beam process:
Bridge Erector remove road bridge be divided into bale handle in place, Yun Liang, move back beam, after move past several techniques such as hole, by first tearing side bar open during dismounting, after tear the sequence of construction of central sill open, Specific construction is as follows:
(1) bale handle: Bridge Erector highway subgrade section spelling group well after, be linked togather with Bridge Erector handlebar day after tomorrow Bridge Erector and counterweight, then with skate, rear overhead traveling crane be fixed on Bridge Erector overhead crane orbit; Rear overhead traveling crane hooks up, and Bridge Erector front is lifted; Whole like this bridge formation weight all concentrates on rear support leg, and synchronously start motor and fortune beam traction windlass on rear supporting leg of bridge erecting machine roller box, bridge formation face can move forward to bridge pier correspondence position; When front support leg is from front cross moving track about 0.5 meter, halt, the front leg strut position line is released by technician to pier, by an off the hook adjustment of overhead traveling crane after Bridge Erector, when making front leg strut higher than front cross moving track about 20cm, Bridge Erector continues to move ahead, and front leg strut arrives after above cross moving track, hook under overhead traveling crane after Bridge Erector, front outrigger for bridge girder erection machine drops on cross moving track; Remove counterweight beam, withstand on rear support leg jack-up near trailing wheel case with hydraulic jack, after roller box 90-degree rotation, cross moving track is placed on immediately below roller box; Jack return, makes trailing wheel drop on rear cross moving track; Bridge Erector is the dynamic row of left and right empty wagons examination on cross moving track, and adjustment cross moving track distance, prepares bale handle; Traversing Bridge Erector and bale handle dolly, just treat lifting beam, and the lifting eye bored at beam-ends puts on wire rope, installs special hanger, adopts wire rope by overall for beam body bag pocket lifting; First check before bale handle that beam up and down and support position, guarantees that it disconnects completely with adjacent structure thing up and down, ensure the success of disposable bale handle;
First use Bridge Erector, the lifting eye bored at beam-ends puts on wire rope, adopts wire rope by overall for beam body bag pocket lifting, lifts wire rope; The operation of side bar bale handle is started after laying down fixing measure; When central sill is removed, after Bridge Erector is in place, cuts cutting with scissors seaming and cutting in the long scope of 100cm reserved in the middle part of beam after beam body being winched to stress with Bridge Erector, carrying out the operation of central sill bale handle;
(2) beam is transported: move to the first hole beam-ends after bale handle dolly, two columns are set in Bridge Erector lower rear, in case Bridge Erector rear portion is stressed excessive when a dolly is transported on metapore beam; Every platform Beam transportation vehicle distance beam end about 3 meters is parked; When Yun Liang rear portion arrives metapore beam-ends, halt, slowly fall, fall within Beam transportation vehicle, Beam transportation vehicle starts and moves simultaneously with front overhead traveling crane, when waiting front overhead traveling crane to arrive above fortune beam trailer, beam is fallen to being placed on fortune beam trailer, the manufactured iron in beam two ends supports, and is fixed on flat car for transport of sills, with flat car for transport of sills, beam is transported to spoil disposal area with 3 tons of jacks; After retrogressing puts in place, beam to be reduced before traversing, the stability of Bridge Erector when which enhancing traversing;
(3) retreat via hole: after the first hole beam has all been torn open, can prepare to retreat via hole; After counterweight beam is transported to position, extend fortune beam orbit in a rear bridge face; To rear beam-ends, with jack rear support leg jack-up, roller box 90-degree rotation, namely with fortune beam orbit direction one to, jack return, rear support leg drops on fortune beam orbit, after walking to after Bridge Erector above a hole, hole;
(4) all beam slabs are removed and are all adopted Bridge Erector to carry out monolithic whole dismounting; When lifting dismounting residue two panels beam, first tackling the beam body torn open afterwards and carrying out supporting, when guaranteeing that beam body is stablized, then starting to lift by crane another sheet beam body; When removing last a slice beam, first with Bridge Erector, beam body is winched to stress, after striking, lift by crane last sheet beam body again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410761372.6A CN104480868B (en) | 2014-12-13 | 2014-12-13 | On tear beam method open across the highway bridge of railway in operation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410761372.6A CN104480868B (en) | 2014-12-13 | 2014-12-13 | On tear beam method open across the highway bridge of railway in operation |
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| CN104480868A true CN104480868A (en) | 2015-04-01 |
| CN104480868B CN104480868B (en) | 2016-06-22 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106149576A (en) * | 2016-08-17 | 2016-11-23 | 中铁二十局集团第三工程有限公司 | On across the whole assembling and dismantling of the most wired bridge except and construction method of installation |
| CN106284109A (en) * | 2016-08-17 | 2017-01-04 | 中铁二十局集团第三工程有限公司 | On across the most wired bridge main beam method for dismounting |
| CN106276602A (en) * | 2016-08-29 | 2017-01-04 | 中铁十局集团建筑安装工程有限公司 | One hangs method across high ferro Business Line beam body |
| CN106758887A (en) * | 2016-11-25 | 2017-05-31 | 武汉二航路桥特种工程有限责任公司 | The whole bridge decentralization method for dismounting of continuous bridge |
| CN107165062A (en) * | 2017-07-07 | 2017-09-15 | 中铁七局集团第工程有限公司 | A kind of method for removing Existing Railway Line gate-type pier capping beam protecting canopy frame |
| CN110273385A (en) * | 2019-04-03 | 2019-09-24 | 中铁大桥局武汉桥梁特种技术有限公司 | A kind of across concrete box girder method for dismounting in cross-line hole |
| CN110820608A (en) * | 2019-12-18 | 2020-02-21 | 中铁七局集团郑州工程有限公司 | Existing railway passenger station-entering overbridge dismantling method |
| CN111155451A (en) * | 2020-01-16 | 2020-05-15 | 中铁十九局集团第六工程有限公司 | Method for dismantling highway-span iron bridge |
| CN111535190A (en) * | 2020-05-08 | 2020-08-14 | 安徽伟宏钢结构集团股份有限公司 | Bridge mounting and dismounting construction method with high safety |
| CN114855656A (en) * | 2022-05-25 | 2022-08-05 | 中国铁建港航局集团有限公司 | Construction method for dismantling old bridge by bridge girder erection machine |
| CN114922104A (en) * | 2022-05-27 | 2022-08-19 | 保利长大工程有限公司 | Bridge hollow slab dismantling method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106149576A (en) * | 2016-08-17 | 2016-11-23 | 中铁二十局集团第三工程有限公司 | On across the whole assembling and dismantling of the most wired bridge except and construction method of installation |
| CN106284109A (en) * | 2016-08-17 | 2017-01-04 | 中铁二十局集团第三工程有限公司 | On across the most wired bridge main beam method for dismounting |
| CN106284109B (en) * | 2016-08-17 | 2018-02-06 | 中铁二十局集团第三工程有限公司 | On across both wired bridge main beam method for dismounting |
| CN106276602A (en) * | 2016-08-29 | 2017-01-04 | 中铁十局集团建筑安装工程有限公司 | One hangs method across high ferro Business Line beam body |
| CN106758887A (en) * | 2016-11-25 | 2017-05-31 | 武汉二航路桥特种工程有限责任公司 | The whole bridge decentralization method for dismounting of continuous bridge |
| CN107165062A (en) * | 2017-07-07 | 2017-09-15 | 中铁七局集团第工程有限公司 | A kind of method for removing Existing Railway Line gate-type pier capping beam protecting canopy frame |
| CN110273385A (en) * | 2019-04-03 | 2019-09-24 | 中铁大桥局武汉桥梁特种技术有限公司 | A kind of across concrete box girder method for dismounting in cross-line hole |
| CN110820608A (en) * | 2019-12-18 | 2020-02-21 | 中铁七局集团郑州工程有限公司 | Existing railway passenger station-entering overbridge dismantling method |
| CN111155451A (en) * | 2020-01-16 | 2020-05-15 | 中铁十九局集团第六工程有限公司 | Method for dismantling highway-span iron bridge |
| CN111535190A (en) * | 2020-05-08 | 2020-08-14 | 安徽伟宏钢结构集团股份有限公司 | Bridge mounting and dismounting construction method with high safety |
| CN114855656A (en) * | 2022-05-25 | 2022-08-05 | 中国铁建港航局集团有限公司 | Construction method for dismantling old bridge by bridge girder erection machine |
| CN114922104A (en) * | 2022-05-27 | 2022-08-19 | 保利长大工程有限公司 | Bridge hollow slab dismantling method |
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