CN105350409A - Construction method of urban railway traffic bolster type steel spring floating slab ballast bed turnout junction - Google Patents
Construction method of urban railway traffic bolster type steel spring floating slab ballast bed turnout junction Download PDFInfo
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- CN105350409A CN105350409A CN201510822596.8A CN201510822596A CN105350409A CN 105350409 A CN105350409 A CN 105350409A CN 201510822596 A CN201510822596 A CN 201510822596A CN 105350409 A CN105350409 A CN 105350409A
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- vibration isolator
- outer sleeve
- reinforcing bar
- track switch
- jacking
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B29/00—Laying, rebuilding, or taking-up tracks; Tools or machines therefor
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B29/00—Laying, rebuilding, or taking-up tracks; Tools or machines therefor
- E01B29/005—Making of concrete parts of the track in situ
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2204/00—Characteristics of the track and its foundations
- E01B2204/09—Ballastless systems
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2204/00—Characteristics of the track and its foundations
- E01B2204/10—Making longitudinal or transverse sleepers or slabs in situ or embedding them
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Repair (AREA)
- Machines For Laying And Maintaining Railways (AREA)
Abstract
The invention discloses a construction method of an urban railway traffic bolster type steel spring floating slab ballast bed turnout junction. Firstly, an SCP measurement control net is arranged within the construction range, steel rib control piles are implanted into a junction tail bottom plate, retest identification is carried out on pile positions, and during casing of basement concrete, the basement flatness is precisely controlled according to the identification; the mileage and the offset distance of a steel spring vibration isolator are converted into SCP control net coordinates; a total station is utilized for carrying out precise lofting and fixing on a basement, according to the junction position, bottom layer steel ribs are bound firstly, and middle layer steel ribs are arranged in advance; a turnout junction erection part is spliced and roughly adjusted, middle layer junction position ballast bed steel ribs and upper layer junction position ballast bed steel ribs are arranged, and then a fine tuning trolley is adopted in the SCP measurement control net to be utilized for precisely controlling the whole turnout junction to be in place; and fine adjustment is carried out on junction position steel ribs and a vibration isolator outer sleeve, a mold plate is mounted, and floating slab ballast bed concrete is cast.
Description
Technical field
The present invention relates to the construction method of urban track traffic rail switch, is more particularly the construction method that bolster formula track switch arranges steel spring floating slab road bed.
Background technology
Bustling urban district is all passed through in urban track traffic, the vibration of generation and noise, impacts neighbouring resident living.Research shows, vibration and noise are no more than 65dB, can not very greatly on the sleep of people impact, and more than the vibration of 69dB and noise, can wake up with a start the shallow people slept.Show through Shanghai Metro Line 1 actual observation record, beyond the centre-line of track 8 meters, the vibration that subway train produces when common integral railway roadbed is interval and noise are 84dB, and one of track switch link that to be whole rail system the weakest, the vibration produced in train travelling process and noise can be larger.By the research to urban track traffic vibration and noise reducing, steel spring floating slab road bed effect of vibration and noise reduction reaches 25 ~ 40dB, effectiveness in vibration suppression comes out at the top in numerous vibration-damping ballast type, be widely used interval orbit, and higher track switch is required for vibration and noise reducing, substantially do not take effective vibration and noise reducing measure at present.
So far, steel spring floating slab road bed track switch is only few in metropolis such as Shenzhen applies short pillow formula, and define " city-rail steel spring floating slab rail bed railroad switch construction method ", this construction method unrealized substrate planeness precise hard_drawn tuhes and steel bomb vibration isolator precise positioning, also unrealizedly on floating plate jacking technique jointly control.Bolster formula steel spring floating slab road bed track switch there is no construction precedent at home, shorter pillow formula, the length long (reaching 4.6m most) of bolster formula steel spring floating slab road bed turnout sleeper, and the assembly such as cage of reinforcement and steel spring vibration isolator is intensive in railway roadbed, integrally-built stability is better than short pillow formula steel spring floating slab road bed track switch, therefore during construction substrate planeness control and the required precision of steel spring vibration isolator setting-out high, reinforcing bar intensive in track switch, it is large that long switch tie and the setting-out of steel spring vibration isolator jointly control difficulty, existing " city-rail steel spring floating slab rail bed railroad switch construction method " cannot meet the requirement of bolster formula steel spring floating slab road bed track switch Construction precision control.
Summary of the invention
The object of this invention is to provide a kind of urban track traffic bolster formula steel spring floating slab road bed railroad switch construction method, meet bolster formula steel spring floating slab road bed track switch construction precision high request, make the construction of floating plate track switch can meet the requirement that track switch design can reach, meet the using function of track switch.
Technical solution problem of the present invention adopts following technical scheme:
Urban track traffic bolster formula steel spring floating slab road bed railroad switch construction method, carries out as follows:
1, preparation of construction
(1) lay SCP precise control net, and carry out tunnel floor absolute altitude repetition measurement;
(2) track switch to carry out examination at tracklaying base assembled;
(3) reinforcing bar is in the tracklaying base unified allocation of materials to lower units, processing bundle bunchy, and utilize straddle truck handling in hole, fork truck is had bad luck to operation field, manually lifts and is transported to lashing location;
2, substrate construction
Within the scope of the base plate of trouble position, implant reinforcing bar by 1 Ge/㎡ control stake, include SCP Controling network measuring technique in, repetition measurement mark is carried out to stake position absolute altitude, before concreting, experiment calculation concrete shrinkage amount, calculates base concrete end face and builds absolute altitude, base concrete being built end face is marked in reinforcing bar control stake, build end face according to the substrate of mark Altitude control, carry out the substrate precise hard_drawn tuhes of whole group of trouble position scope, planeness controls within the scope of every square metre of 2mm;
3, vibration isolator outer sleeve location
Vibration isolator outer sleeve position is determined according to steel spring vibration isolator position, before construction, steel spring vibration isolator mileage and offset distance are converted to SCP Controling network coordinate, before laying barrier film, in the substrate of having constructed, adopt accurate total powerstation to release the center of each steel spring vibration isolator in advance, utilize central point and vibration isolator outer sleeve size to be drawn by the sideline line of ink marker of vibration isolator outer sleeve, and then also fix vibration isolator outer sleeve according to the line of ink marker precise positioning of steel spring vibration isolator central point and extraction;
4, bottom layer of the reinforcing steel colligation arrange middle level reinforcing bar
First colligation bottom layer of the reinforcing steel, then middle level reinforcing bar is arranged in advance, reinforcing bar binding and consider the position of vibration isolator outer sleeve when arranging, takes first colligation to fix the reinforcing bar of vibration isolator outer sleeve periphery, and the bottom hanger of vibration isolator outer sleeve and bottom layer of the reinforcing steel colligation firm;
5, track switch assembling frame stands
Trouble material utilizes straddle truck by the handling of section of track well head in hole, fork truck is utilized to have bad luck to laying on-the-spot, manually have bad luck to paving location, before putting switch tie, first smooth in the below square steel pad that switch track is corresponding, a plane is provided to switch tie, track switch is set a roof beam in place and is adopted Simple gantry crane and track switch special rail bearing support frame in hole to stand, track switch assembling frame has stood rear beginning and has carried out coarse adjustment to the direction of track switch and absolute altitude, direction and absolute altitude Deviation Control within the scope of ± 5mm, reduce tie with reinforcing bar complete after adjustment amount;
6, colligation middle level and top reinforcement is arranged
Track switch frame starts colligation middle level reinforcing bar after standing coarse adjustment, consider long switch tie and vibration isolator outer sleeve position during the reinforcing bar binding of middle level, and below long switch tie, the first colligation with vibration isolator outer sleeve surrounding reinforcing bar, starts to arrange top reinforcement and colligation after middle level reinforcing bar binding completes;
7, cage of reinforcement and the adjustment of vibration isolator outer sleeve position
Before concreting, reinforcing bar and vibration isolator outer sleeve position are adjusted, take Partial controll after first integrated regulation, first adjust the mode that key position finely tunes common position again, namely first utilize the line of ink marker of extraction that the position deviation of vibration isolator outer sleeve is adjusted to design attitude, Deviation Control is in ± 5mm, and then steel grid spacing will be adjusted, first adjust spacing and the vibration isolator outer sleeve periphery reinforcing bar of lengthways main steel bar, adjust transverse reinforcement and bearing rod again, cage of reinforcement mesh spacing, height and protective layer thickness meet design requirement;
8, model sheetinstallat, concreting
Check center of turnout line position before model sheetinstallat, utilizes the width of center of turnout line and railway roadbed to eject the sideline of model sheetinstallat, and to guarantee that installation site is correct, template utilizes supporting and Steel-bar Pile to reinforce, and prevents from running mould sideline in concreting process;
9, floating plate jacking
Adopt portable jack segmentation successively back and forth progressively jacking put in place, the forward and backward each 4 pieces of floating plate railway roadbeds of united turnout carry out jacking control, total jacking amount 40mm, 3-4 is divided into take turns, the first run jacking of every section of plate is first completed successively from trouble forward direction trouble tail, then jacking is taken turns toward trouble front to carrying out second from trouble tail, back and forth complete three to the four-wheel jacking of floating plate track switch, during jacking, the forward and backward 4 pieces of floating plate railway roadbeds of track switch carry out simultaneously, 1st piece of floating plate and the track switch synchronization of jacking up 4 of close track switch are taken turns, and progressively successively decrease successively toward backward 4th piece of floating plate.
Described floating plate is often taken turns after jacking completes, repetition measurement is carried out to the measurement observation point elevation be laid on track switch floating plate railway roadbed and direction, the data of all survey marks are compared, analyzed, and the total quality of jacking is grasped in adjustment, and last entirety reaches top lifting height and the smooth degree of design.
Before fluid concrete, on-site supervision engineer is inspected for acceptance, can concreting after qualified, and protects rail, fastener.Concrete is transported to feed opening by transport vehicle, again by concrete pump tube pump to pouring location, concrete vibrating adopts small-sized vibrating spear, forbid in whole road process to touch vibration isolator outer sleeve, track switch bracing frame and track switch, whole group of track switch concrete needs disposable continuous placing to complete, carry out receipts light after concreting completes in time wipe one's face and cover watering maintenance, vibration isolator outer sleeve periphery is strengthened receiving light and is wiped one's face.
Bolster formula steel spring floating slab road bed railroad switch construction method of the present invention is " assemble in situ casting method ", first in boundary of works area, SCP SURVEYING CONTROL NETWORK is laid, trouble tail base plate implants reinforcing bar by 1 Ge/㎡ and controls stake, and repetition measurement mark is carried out to stake position, substrate planeness precise hard_drawn tuhes is realized according to mark when base concrete is built, then the mileage of steel spring vibration isolator and offset distance are converted into SCP Controling network coordinate, utilize total powerstation accurate setting-out in substrate also fixing, also middle level reinforcing bar is arranged in advance afterwards by the first colligation bottom layer of the reinforcing steel in trouble position, the vertical also coarse adjustment of assembled track switch frame, rearrange colligation middle level and trouble position, upper strata railway roadbed reinforcing bar, utilizing SCP SURVEYING CONTROL NETWORK to adopt accurate adjustment dolly to carry out accurate adjustment to whole group of track switch subsequently controls in place, intense adjustment is carried out to trouble position reinforcing bar and vibration isolator outer sleeve position, installation form also builds floating plate railway roadbed concrete.Before and after floating plate jacking united turnout, floating plate railway roadbed considers the stressed of rail, floating plate and shear hinge and distortion, adopts and back and forth complete four-wheel jacking before trouble forward direction trouble tail, trouble Caudad trouble, reach design rail level absolute altitude and smooth degree.
Compared with the prior art, beneficial effect of the present invention is embodied in:
1, be implanted into reinforcing bar in trouble position base plate scope and control stake (1 Ge/㎡), include SCP Controling network measuring technique in, repetition measurement mark is carried out to stake position absolute altitude, end face is built according to the substrate of mark Altitude control, this kind of method effectively can control absolute altitude and the planeness of substrate, solving prior art substrate controls not in place, repeatedly need polish and repair the problem of substrate surface.
2, before construction, steel spring vibration isolator mileage and offset distance are converted to SCP Controling network coordinate, before laying barrier film, in the substrate of having constructed, adopt accurate total powerstation to release the center of each steel spring vibration isolator in advance, the position of vibration isolator outer sleeve is controlled with this, this kind of method can realize the precise positioning of vibration isolator outer sleeve, avoid prior art vibration isolator outer sleeve location not accurate, affect the problem of effect of vibration and noise reduction.
3, steel spring vibration isolator precise positioning and fixing after, arrange middle level reinforcing bar in advance by the first colligation bottom layer of the reinforcing steel in trouble position, the vertical and coarse adjustment of assembled track switch frame afterwards, rearranges colligation middle level and trouble position, upper strata railway roadbed reinforcing bar.This method avoid that reinforcing bar, long switch tie and vibration isolator outer sleeve intensive in bolster formula steel spring floating slab Turnout Monolithic Track Bed are disturbed mutually, overlapping occupy-place and skew exceed standard phenomenon, ensure that the precisely in place of each building block.Prior art is short pillow track switch, and tie with reinforcing bar working space is large, and construction method stands track switch for assembling frame, and then at colligation bottom, middle level and top reinforcement, this kind of method cannot realize bolster track switch tie with reinforcing bar.
4, floating plate jacking adopt portable jack segmentation successively back and forth progressively jacking put in place, consider the stressed of rail, floating plate and shear hinge and distortion, before and after united turnout, each 4 pieces of (100m) floating plate railway roadbeds carry out jacking control, this kind of method can guarantee rail level height and the smooth degree of jacking, avoids the inhomogeneous deformation of floating plate plate.Prior art does not jointly control floating plate jacking.
5, bolster formula steel spring floating slab road bed railroad switch construction method of the present invention adopts " assemble in situ casting method ", and construction technology process is clear, and each procedure connection is compact, can utilize existing tooling device, invest low, efficiency is high, construction flexibility is high.
Accompanying drawing illustrates:
Fig. 1 is bolster formula steel spring floating slab road bed track switch cross-sectional drawing of the present invention.
Below by way of detailed description of the invention, by reference to the accompanying drawings a step explanation is done to the present invention.
Detailed description of the invention:
See accompanying drawing, urban track traffic bolster formula steel spring floating slab road bed railroad switch construction method, carries out as follows:
1, preparation of construction
(1) lay SCP precise control net, and carry out tunnel floor absolute altitude repetition measurement;
(2) track switch to carry out examination at tracklaying base assembled;
(3) reinforcing bar is in the tracklaying base unified allocation of materials to lower units, processing bundle bunchy, and utilize straddle truck handling in hole, fork truck is had bad luck to operation field, manually lifts and is transported to lashing location;
2, substrate construction
Within the scope of the base plate of trouble position, implant reinforcing bar by 1 Ge/㎡ control stake, include SCP Controling network measuring technique in, repetition measurement mark is carried out to stake position absolute altitude, before concreting, experiment calculation concrete shrinkage amount, calculates substrate 1 top of concrete and builds absolute altitude, base concrete being built end face is marked in reinforcing bar control stake, build end face according to the substrate of mark Altitude control, carry out the substrate precise hard_drawn tuhes of whole group of trouble position scope, planeness controls within the scope of every square metre of 2mm;
3, vibration isolator outer sleeve location
Vibration isolator outer sleeve position is determined according to steel spring vibration isolator 2 position, before construction, steel spring vibration isolator 2 mileage and offset distance are converted to SCP Controling network coordinate, before laying barrier film, in the substrate 1 of having constructed, adopt accurate total powerstation to release the center of each steel spring vibration isolator 2 in advance, utilize central point and vibration isolator outer sleeve size to be drawn by the sideline line of ink marker of vibration isolator outer sleeve, and then also fix vibration isolator outer sleeve according to the line of ink marker precise positioning of steel spring vibration isolator central point and extraction;
4, bottom layer of the reinforcing steel colligation arrange middle level reinforcing bar
First colligation bottom layer of the reinforcing steel, then middle level reinforcing bar is arranged in advance, reinforcing bar binding and consider the position of vibration isolator outer sleeve when arranging, takes first colligation to fix the reinforcing bar of vibration isolator outer sleeve periphery, and the bottom hanger of vibration isolator outer sleeve and bottom layer of the reinforcing steel colligation firm;
5, track switch assembling frame stands
Trouble material utilizes straddle truck by the handling of section of track well head in hole, fork truck is utilized to have bad luck to laying on-the-spot, manually have bad luck to paving location, before putting switch tie, first smooth in the below square steel pad that switch track is corresponding, a plane is provided to switch tie, track switch is set a roof beam in place and is adopted Simple gantry crane and track switch special rail bearing support frame in hole to stand, track switch assembling frame has stood rear beginning and has carried out coarse adjustment to the direction of track switch and absolute altitude, direction and absolute altitude Deviation Control within the scope of ± 5mm, reduce tie with reinforcing bar complete after adjustment amount;
6, colligation middle level and top reinforcement is arranged
Track switch frame starts colligation middle level reinforcing bar after standing coarse adjustment, long switch tie and vibration isolator outer sleeve position is considered during the reinforcing bar binding of middle level, below long switch tie 4, the first colligation with vibration isolator 2 outer sleeve surrounding reinforcing bar, starts to arrange top reinforcement and colligation after middle level reinforcing bar binding completes;
7, cage of reinforcement and the adjustment of vibration isolator outer sleeve position
Before concreting, reinforcing bar and vibration isolator outer sleeve position are adjusted, take Partial controll after first integrated regulation, first adjust the mode that key position finely tunes common position again, namely first utilize the line of ink marker of extraction that the position deviation of vibration isolator outer sleeve is adjusted to design attitude, Deviation Control is in ± 5mm, and then steel grid spacing will be adjusted, first adjust spacing and the vibration isolator outer sleeve periphery reinforcing bar of lengthways main steel bar, adjust transverse reinforcement and bearing rod again, cage of reinforcement mesh spacing, height and protective layer thickness meet design requirement;
8, model sheetinstallat, concreting
Check center of turnout line position before model sheetinstallat, utilizes the width of track switch 5 center line and railway roadbed to eject the sideline of model sheetinstallat, and to guarantee that installation site is correct, template utilizes supporting and Steel-bar Pile to reinforce, and prevents from running mould sideline in concreting process;
9, floating plate jacking
Adopt portable jack segmentation successively back and forth progressively jacking put in place, the forward and backward each 4 pieces of floating plate railway roadbeds 3 of united turnout carry out jacking control, total jacking amount 40mm, 3-4 is divided into take turns, the first run jacking of every section of plate is first completed successively from trouble forward direction trouble tail, then jacking is taken turns toward trouble front to carrying out second from trouble tail, back and forth complete three to the four-wheel jacking of floating plate track switch, during jacking, the forward and backward 4 pieces of floating plate railway roadbeds 3 of track switch carry out simultaneously, 1st piece of floating plate and the track switch synchronization of jacking up 4 of close track switch are taken turns, and progressively successively decrease successively toward backward 4th piece of floating plate.
Described floating plate is often taken turns after jacking completes, repetition measurement is carried out to the measurement observation point elevation be laid on track switch floating plate railway roadbed and direction, the data of all survey marks are compared, analyzed, and the total quality of jacking is grasped in adjustment, and last entirety reaches top lifting height and the smooth degree of design.
Before fluid concrete, on-site supervision engineer is inspected for acceptance, can concreting after qualified, and protects rail, fastener.Concrete is transported to feed opening by transport vehicle, again by concrete pump tube pump to pouring location, concrete vibrating adopts small-sized vibrating spear, forbid in whole road process to touch vibration isolator outer sleeve, track switch bracing frame and track switch, whole group of track switch concrete needs disposable continuous placing to complete, carry out receipts light after concreting completes in time wipe one's face and cover watering maintenance, vibration isolator outer sleeve periphery is strengthened receiving light and is wiped one's face.
Concreting 28 days and after reaching design strength, starts floating plate jacking.
Track switch floating plate railway roadbed is laid 8 and measures observation point, measure floating plate top lifting height and distortion.To the lid in vibration isolator outer sleeve be opened before jacking, and check in cylinder whether clean no-sundries, and excise barrier film in cylinder.
According to designing requirement, needing the vibration isolator outer sleeve centre-drilling hole of installing steady pin, press-in steady pin.Utilize mounting rod, steel spring vibration isolator is put in outer sleeve, put into leveling steel plate, prepare floating plate jacking.
Adopt portable jack segmentation successively back and forth progressively jacking put in place, consider the stressed of rail, floating plate and shear hinge and distortion, before and after united turnout, each 4 pieces of (100m) floating plate railway roadbeds carry out jacking control, total jacking amount 40mm divides 3 to 4 to take turns, first completing the first run jacking of every section of plate from trouble forward direction trouble tail successively, then taking turns jacking toward trouble front to carrying out second from trouble tail.Back and forth complete three to the four-wheel jacking of floating plate track switch, during jacking, before and after track switch, 4 pieces of floating plate railway roadbeds carry out simultaneously, and the 1st piece of floating plate and the track switch synchronization of jacking up 4 of close track switch are taken turns, and progressively successively decrease successively toward backward 4th piece of floating plate.
After often wheel jacking completes, repetition measurement is carried out to the measurement observation point elevation be laid on track switch floating plate railway roadbed and direction, the data of all survey marks are compared, analyzed, and the total quality of jacking is grasped in adjustment, and last entirety reaches top lifting height and the smooth degree of design.
Claims (1)
1. urban track traffic bolster formula steel spring floating slab road bed railroad switch construction method, is characterized in that, carries out as follows:
1), preparation of construction
(1) lay SCP precise control net, and carry out tunnel floor absolute altitude repetition measurement;
(2) track switch to carry out examination at tracklaying base assembled;
(3) reinforcing bar is in the tracklaying base unified allocation of materials to lower units, processing bundle bunchy, and utilize straddle truck handling in hole, fork truck is had bad luck to operation field, manually lifts and is transported to lashing location;
2), substrate construction
Within the scope of the base plate of trouble position, implant reinforcing bar by 1 Ge/㎡ control stake, include SCP Controling network measuring technique in, repetition measurement mark is carried out to stake position absolute altitude, before concreting, experiment calculation concrete shrinkage amount, calculates base concrete end face and builds absolute altitude, base concrete being built end face is marked in reinforcing bar control stake, build end face according to the substrate of mark Altitude control, carry out the substrate precise hard_drawn tuhes of whole group of trouble position scope, planeness controls within the scope of every square metre of 2mm;
3), vibration isolator outer sleeve location
Vibration isolator outer sleeve position is determined according to steel spring vibration isolator position, before construction, steel spring vibration isolator mileage and offset distance are converted to SCP Controling network coordinate, before laying barrier film, in the substrate of having constructed, adopt accurate total powerstation to release the center of each steel spring vibration isolator in advance, utilize central point and vibration isolator outer sleeve size to be drawn by the sideline line of ink marker of vibration isolator outer sleeve, and then also fix vibration isolator outer sleeve according to the line of ink marker precise positioning of steel spring vibration isolator central point and extraction;
4), bottom layer of the reinforcing steel colligation arrange middle level reinforcing bar
First colligation bottom layer of the reinforcing steel, then middle level reinforcing bar is arranged in advance, reinforcing bar binding and consider the position of vibration isolator outer sleeve when arranging, takes first colligation to fix the reinforcing bar of vibration isolator outer sleeve periphery, and the bottom hanger of vibration isolator outer sleeve and bottom layer of the reinforcing steel colligation firm;
5), track switch assembling frame stands
Trouble material utilizes straddle truck by the handling of section of track well head in hole, fork truck is utilized to have bad luck to laying on-the-spot, manually have bad luck to paving location, before putting switch tie, first smooth in the below square steel pad that switch track is corresponding, a plane is provided to switch tie, track switch is set a roof beam in place and is adopted Simple gantry crane and track switch special rail bearing support frame in hole to stand, track switch assembling frame has stood rear beginning and has carried out coarse adjustment to the direction of track switch and absolute altitude, direction and absolute altitude Deviation Control within the scope of ± 5mm, reduce tie with reinforcing bar complete after adjustment amount;
6), colligation middle level and top reinforcement is arranged
Track switch frame starts colligation middle level reinforcing bar after standing coarse adjustment, consider long switch tie and vibration isolator outer sleeve position during the reinforcing bar binding of middle level, and below long switch tie, the first colligation with vibration isolator outer sleeve surrounding reinforcing bar, starts to arrange top reinforcement and colligation after middle level reinforcing bar binding completes;
7), cage of reinforcement and the adjustment of vibration isolator outer sleeve position
Before concreting, reinforcing bar and vibration isolator outer sleeve position are adjusted, take Partial controll after first integrated regulation, first adjust the mode that key position finely tunes common position again, namely first utilize the line of ink marker of extraction that the position deviation of vibration isolator outer sleeve is adjusted to design attitude, Deviation Control is in ± 5mm, and then steel grid spacing will be adjusted, first adjust spacing and the vibration isolator outer sleeve periphery reinforcing bar of lengthways main steel bar, adjust transverse reinforcement and bearing rod again, cage of reinforcement mesh spacing, height and protective layer thickness meet design requirement;
8), model sheetinstallat, concreting
Check center of turnout line position before model sheetinstallat, utilizes the width of center of turnout line and railway roadbed to eject the sideline of model sheetinstallat, and to guarantee that installation site is correct, template utilizes supporting and Steel-bar Pile to reinforce, and prevents from running mould sideline in concreting process;
9), floating plate jacking
Adopt portable jack segmentation successively back and forth progressively jacking put in place, the forward and backward each 4 pieces of floating plate railway roadbeds of united turnout carry out jacking control, total jacking amount 40mm, 3-4 is divided into take turns, the first run jacking of every section of plate is first completed successively from trouble forward direction trouble tail, then jacking is taken turns toward trouble front to carrying out second from trouble tail, back and forth complete three to the four-wheel jacking of floating plate track switch, during jacking, the forward and backward 4 pieces of floating plate railway roadbeds of track switch carry out simultaneously, 1st piece of floating plate and the track switch synchronization of jacking up 4 of close track switch are taken turns, and progressively successively decrease successively toward backward 4th piece of floating plate;
Described floating plate is often taken turns after jacking completes, repetition measurement is carried out to the measurement observation point elevation be laid on track switch floating plate railway roadbed and direction, the data of all survey marks are compared, analyzed, and the total quality of jacking is grasped in adjustment, and last entirety reaches top lifting height and the smooth degree of design;
Before fluid concrete, on-site supervision engineer is inspected for acceptance; can concreting after qualified; and rail, fastener are protected; concrete is transported to feed opening by transport vehicle; again by concrete pump tube pump to pouring location; concrete vibrating adopts small-sized vibrating spear; forbid in whole road process to touch vibration isolator outer sleeve, track switch bracing frame and track switch; whole group of track switch concrete needs disposable continuous placing to complete; carry out receipts light after concreting completes in time wipe one's face and cover watering maintenance, vibration isolator outer sleeve periphery is strengthened receiving light and is wiped one's face.
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| CN106480791A (en) * | 2016-12-19 | 2017-03-08 | 华东交通大学 | Straddle-type screw thread self-locking track compensates backing plate automatically |
| CN107119509A (en) * | 2017-07-06 | 2017-09-01 | 南京华创交通设备有限公司 | A kind of long ramp floating plate positioner |
| CN107338689A (en) * | 2017-07-19 | 2017-11-10 | 中铁四局集团有限公司 | A kind of construction method of rubber tire rail pivot track switch |
| CN110644292A (en) * | 2019-10-10 | 2020-01-03 | 同济大学 | Spring vibration isolator jacking method for floating slab track |
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| CN106480791A (en) * | 2016-12-19 | 2017-03-08 | 华东交通大学 | Straddle-type screw thread self-locking track compensates backing plate automatically |
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| CN107338689B (en) * | 2017-07-19 | 2019-01-18 | 中铁四局集团有限公司 | A kind of construction method of rubber tire rail pivot track switch |
| CN110644292A (en) * | 2019-10-10 | 2020-01-03 | 同济大学 | Spring vibration isolator jacking method for floating slab track |
| CN110644292B (en) * | 2019-10-10 | 2021-05-11 | 同济大学 | Spring vibration isolator jacking method for floating slab track |
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