CN109183530B - Line temporary overhead device and method for ballastless track disease remediation - Google Patents
Line temporary overhead device and method for ballastless track disease remediation Download PDFInfo
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- CN109183530B CN109183530B CN201811145634.0A CN201811145634A CN109183530B CN 109183530 B CN109183530 B CN 109183530B CN 201811145634 A CN201811145634 A CN 201811145634A CN 109183530 B CN109183530 B CN 109183530B
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- 201000010099 disease Diseases 0.000 title claims abstract description 39
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000005067 remediation Methods 0.000 title claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 306
- 239000010959 steel Substances 0.000 claims abstract description 306
- 230000007547 defect Effects 0.000 claims abstract description 20
- 239000004567 concrete Substances 0.000 claims abstract description 19
- 238000010276 construction Methods 0.000 claims abstract description 15
- 238000003466 welding Methods 0.000 claims abstract description 12
- 238000006073 displacement reaction Methods 0.000 claims description 21
- 238000005520 cutting process Methods 0.000 claims description 12
- 239000000126 substance Substances 0.000 claims description 9
- 239000010425 asbestos Substances 0.000 claims description 6
- 229910052895 riebeckite Inorganic materials 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 4
- 239000004570 mortar (masonry) Substances 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000011900 installation process Methods 0.000 claims description 3
- 238000009418 renovation Methods 0.000 claims description 3
- 230000008439 repair process Effects 0.000 claims description 3
- 238000010079 rubber tapping Methods 0.000 claims description 3
- 238000012937 correction Methods 0.000 claims description 2
- 230000002950 deficient Effects 0.000 claims 1
- 230000008030 elimination Effects 0.000 abstract description 2
- 238000003379 elimination reaction Methods 0.000 abstract description 2
- 241001669679 Eleotris Species 0.000 description 8
- 238000013461 design Methods 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
Classifications
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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
- E01B29/40—Means or arrangements for temporarily supporting laid tracks, or rails or sleepers in the track
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Abstract
The invention relates to a temporary line overhead device and method for ballastless track defect remediation, and belongs to the technical field of railway ballastless track defect elimination. The temporary overhead device comprises a steel bolster, a support, a limiting device and a fastener; the longitudinal beam of the steel pad beam is formed by welding steel plates and is in a box-shaped section, and a plurality of fasteners are arranged on the upper flange of the longitudinal beam and used for locking the steel rail and the longitudinal beam; the two ends of the longitudinal beam are respectively supported on the track concrete supporting layer through the support; limiting devices A are arranged at the joints of the longitudinal beams and the support; and limiting devices B are respectively arranged at the joints of the longitudinal beams and the first small cross beam and the last small cross beam. The invention improves the integrity and construction convenience of the overhead structure, enables the overhead device to realize the adjustment of vertical and horizontal positions, can be connected with each other, and can form an overhead line by adopting the combination of multiple sets of devices for the line with longer disease treatment range.
Description
Technical Field
The invention relates to a temporary line overhead device and method for ballastless track defect remediation, and belongs to the technical field of railway ballastless track defect elimination.
Background
Along with the development of high-speed railways, ballastless tracks are widely applied to high-speed railway lines due to the characteristics of high smoothness, good rigidity uniformity, lasting track geometric shapes and positions and the like. In recent years, operation practice shows that the ballastless track is generally normal in structural state, but under the action of long-term train operation load and external environment, mortar layer bonding gradually fails, the conditions of damage to a reinforced concrete supporting layer and arching of a track slab crack occur occasionally, poor track geometry and poor position are caused, and great potential safety hazards are brought to normal operation of a line. Once the track structure is damaged, the track structure should be repaired and remedied in time, and when the repairing operation affects the safety and stability of the track structure, if the track plate is replaced, the concrete supporting layer is chiseled and reinforced, measures are needed to be taken to temporarily overhead the existing line, and the repairing operation is carried out under the condition that the train operation is not affected.
At present, few temporary overhead methods aiming at ballastless tracks exist, and basic overhead methods of the traditional operation line include a hanging/buckling rail method, a I-beam method, a D-shaped convenient beam method and the like. The hanging/buckling rail method is an overhead structure for forming an overhead system longitudinal beam by connecting a plurality of loose rails into rail bundles through bolts and angle steel, wherein the hanging rail girders are distributed on two sides of a stock rail above a sleeper, the buckling rail girders are positioned under the stock rail below the sleeper or outside a line sleeper, cross beams between the sleepers, two ends of the beams are lapped on the longitudinal rail bundles, and the stock rail is fixed on the beams; the I-beam method is similar to the hanging/buckling rail method in structure, and a longitudinal beam structure in an overhead system is formed by using hot-rolled I-shaped steel to replace steel rails in the hanging/buckling rail method, so that the I-beam method can be divided into an I-beam hanging beam method and an I-beam Shu Liangfa under a stock rail; the D-shaped convenient beam is a shaping steel beam structure specially used for overhead line production in factories, the structure generally comprises two I-shaped steel longitudinal beams and a plurality of small cross beams, the cross beams and the longitudinal beams are spliced together through high-strength bolts, steel rails are directly fixed on the cross beams through matched fasteners, and the whole convenient beam structure is fixed on a foundation through 4 supports below the two longitudinal beams.
The Chinese patent application number 201610605003.7 discloses a temporary steel rail supporting device for disassembling and replacing a railway ballastless track supporting layer, which mainly comprises a steel bolster main body and a transition section sleeper. The steel bolster main body consists of two I-shaped large longitudinal beams and a plurality of small cross beams, wherein the two longitudinal beams are respectively positioned under two steel rails, the longitudinal beams are connected through the cross beams, two ends of the steel bolster are supported on a concrete supporting layer through supporting seats, and the steel bolster is erected above a disease area to form a certain construction space. And a corresponding number of transition sleepers are arranged between the two ends of the steel bolster and the normal track plates according to different lengths. The steel bolster and the sleeper support the operation line rail together to form the temporary overhead line.
Because the high-speed railway has higher requirements on the running safety and stability of the train, the ballastless track structure has relatively lower height, the construction space is limited, and the traditional operation line overhead method cannot be well applied to temporary overhead of the ballastless track. The hanging/buckling rail method and the I-steel Shu Liangfa are generally suitable for occasions with narrow space and smaller span, bear little load, and the overhead structure is complicated to install, poor in stability and low in reliability because the steel rail bundles and the I-steel bundles are formed by a plurality of loose units; in the I-steel hanging beam method, each longitudinal beam is a single I-steel, the cross beam is a matched shaping steel sleeper, the longitudinal beam, the cross beam and the stock rail are connected through bolts, but an overhead fulcrum adopts a concrete hole digging pile, and the I-steel structure is large in size and is not suitable for occasions with narrow spaces; the D-shaped temporary beam is specially used for overhead line shaping steel beam structures and has the characteristics of high strength, large rigidity, large span and high reliability, but is generally used for building structures under existing lines of ballasted tracks, and has the defects of overlarge beam volume and mass, poor convenience and difficult operation, and is difficult to apply to temporary frame of ballastless tracks.
In the overhead scheme disclosed in the Chinese patent application No. 201610605003.7, because the steel bolster large longitudinal beam adopts an I-shaped section form, the length and the span of the beam body are relatively small, a blank section exists between two ends or one end of the steel bolster and a normal track plate, a transition sleeper is required to be arranged for supporting a line rail in the blank section, the overhead line consists of the steel bolster and a plurality of loose sleepers, the construction is complicated, and the integrity and the stability of an overhead line are poor; the support and the limiting device adopted by the steel cushion beam are of a single fixed structure, and the position adjustment of the beam body in the vertical direction and the transverse direction cannot be realized, so that the overhead device is difficult to be suitable for the correction of certain special disease working conditions; for the condition of longer repairing range, the overhead scheme can only adopt a sectional construction method, and the repairing period is long.
Disclosure of Invention
In order to solve the problems, the invention aims to provide a temporary overhead device and a temporary overhead method for a line suitable for ballastless track disease treatment aiming at CRTS II type ballastless tracks with more diseases, which improve the integrity and construction convenience of an overhead structure, enable the overhead devices to realize the adjustment of vertical and horizontal positions, enable multiple sets of overhead devices to be connected, and enable multiple sets of overhead devices to be combined to form an overhead line for a line with a longer disease treatment range.
The invention aims at realizing the following technical scheme:
a temporary overhead device for a line for ballastless track disease remediation comprises a steel bolster, a support, a limiting device and a fastener;
the steel pad beam consists of two longitudinal beams and a plurality of small cross beams positioned between the two longitudinal beams, the two longitudinal beams are respectively positioned under the two steel rails, and the small cross beams are transversely arranged along the track; the upper flange of the longitudinal beam is provided with a plurality of fasteners for locking the steel rail and the longitudinal beam; two ends of the two longitudinal beams are respectively supported on the track concrete supporting layer through the support;
limiting devices A are arranged at the joints of the longitudinal beams and the support, and are positioned at the outer sides of the longitudinal beams and used for limiting the transverse displacement of the steel cushion beam body; limiting devices B are respectively arranged at the joints of the longitudinal beams and the first and last small cross beams, and are positioned at the inner sides of the longitudinal beams and used for limiting the transverse and longitudinal displacement of the steel bolster body; and the limiting device A and the limiting device B are fixed on the track concrete supporting layer through chemical anchor bolts.
Further, the total length of the steel bolster is 6300mm; and the transverse and longitudinal central lines of the steel pad beam are respectively overlapped with the transverse and longitudinal central lines of the replaced track plate.
Further, when only one track plate in the ballastless track line is damaged, a temporary line is erected by replacing the damaged track plate by adopting a set of overhead device, and a CRTS II type track plate is just replaced by a hole steel backing beam; when a plurality of continuous track plates in the ballastless track line generate diseases, a temporary line is sequentially replaced and erected on the track plates in the disease range by adopting a plurality of sets of overhead devices, and the plurality of sets of overhead devices comprise porous steel cushion beams.
Further, the porous steel bolster is a multi-span continuous structure formed by connecting a plurality of single-hole steel bolsters in series through connecting plates; two long round holes are respectively formed in two ends of the connecting plate, two round holes are formed in corresponding positions of longitudinal beam webs of two adjacent single-hole steel cushion beams, and the webs of the two adjacent single-hole steel cushion beams are connected through the connecting plate and the high-strength bolts.
Further, the upper flange and the lower flange of the longitudinal beam extend out of the web plate for a certain length, a plurality of stiffening plates are welded on the longitudinal beam at intervals along the length direction of the longitudinal beam, and the stiffening plates are vertically fixed between the upper flange and the web plate, and between the lower flange and the web plate; the small cross beam is formed by welding steel plates, and two ends of the small cross beam are connected with the stiffening plate through high-strength bolts.
Further, the support consists of a steel plate and a rubber bearing plate, wherein the steel plate comprises a steel plate A and a steel plate B, and the thicknesses of the steel plate A and the steel plate B are 20-50 mm; the top surface of the steel plate A is provided with a square groove for installing the rubber bearing plate, and the bottom surface of the steel plate A is provided with a circular groove; the top surface of the steel plate B is provided with a circular boss matched with the circular groove, and the bottom surface of the steel plate B is also provided with a circular groove; the height of the support is adjusted through the matched use of the steel plate A and the steel plate B.
Further, the method comprises the steps of,
the limiting device A is an L-shaped angle steel welded by a first horizontal steel plate and a first vertical steel plate, the first horizontal steel plate is fixed on a track concrete supporting layer through a chemical anchor bolt, and the first vertical steel plate is attached to a lower flange at the outer side of a longitudinal beam and used for limiting the transverse displacement of a steel bolster body; a stiffening plate which is arranged vertically is arranged between the first horizontal steel plate and the first vertical steel plate;
the limiting device B is formed by welding a second horizontal steel plate and three second vertical steel plates, the top view of the limiting device B is U-shaped, and the second horizontal steel plate is fixed on a track concrete supporting layer through a chemical anchor bolt; the middle second vertical steel plate is attached to the lower flange at the inner side of the longitudinal beam and used for limiting the transverse displacement of the steel bolster body; and a second vertical steel plate at one side is attached to the small cross beam and used for limiting the longitudinal displacement of the steel bolster body.
Further, the method comprises the steps of,
a plurality of first adjusting steel blocks are arranged on the outer side of the first vertical steel plate of the limiting device A through first U-shaped clamps, and the first adjusting steel blocks on the outermost side are attached to the lower flange on the outer side of the longitudinal beam and used for limiting the transverse displacement of the steel pad beam body; two openings corresponding to the first U-shaped clamp are formed in the first vertical steel plate, and the transverse position of the steel cushion beam is adjusted through the number and the thickness of the selected first adjusting steel blocks;
a plurality of second adjusting steel blocks are arranged on the outer side of the second vertical steel plate in the middle of the limiting device B through second U-shaped clamps, and the second adjusting steel blocks on the outermost side are attached to the lower flange on the inner side of the longitudinal beam and are used for limiting the transverse displacement of the steel pad beam body; two openings corresponding to the second U-shaped clamps are formed in the middle second vertical steel plate, and the transverse position of the steel cushion beam is adjusted through the number and the thickness of the second adjusting steel blocks.
A method for erecting a temporary line by using a line temporary overhead device for ballastless track defect repair, when only one track plate in the ballastless track line has defects, comprises the following steps:
step 1, cutting the steel rail above the defect track plate by using a rail cutting machine, respectively extending the break points at the two ends of the steel rail to 3-5 m along the longitudinal direction of the rail and removing the cut steel rail;
step 2, chiseling wide and narrow joints at two ends of the disease track plate, releasing prestress of the disease track plate, and removing the disease track plate by using a jack, a lifting appliance and lifting equipment;
step 3, chiseling a mortar bonding layer on a track concrete supporting layer by using a chiseling instrument to ensure that the exposed supporting layer surface is smooth, cleaning the supporting layer surface, marking a support position by using an ink line through a cross mark on the cleaned supporting layer surface, and marking the end position of a steel tapping pad beam through a straight line;
step 4, paving a layer of asbestos pad on the surface of a supporting layer at the mounting position of the support, placing the support steel plate on the asbestos pad according to the support position marking line and the longitudinal and transverse central lines on the support steel plate, determining the height of the support steel plate according to the track line shape through advance calculation, and then mounting the rubber bearing plate in a groove on the support steel plate;
step 5, hoisting the steel bolster on the support by using hoisting equipment, and adjusting the shape of the steel bolster so that the longitudinal center line of the steel bolster coincides with the center line of the track, and the beam end of the steel bolster coincides with the marking line of the end part of the steel bolster;
step 6, installing a limiting device A at a support seat at the outer side of the longitudinal beam, installing a limiting device B at a first small cross beam and a last small cross beam at the inner side of the longitudinal beam, and respectively installing the limiting device A and the limiting device B tightly against a flange of the longitudinal beam when the transverse position adjustment of a steel bolster body is not needed; when the steel bolster beam body needs to be transversely moved, the distance between the limiting device A and the limiting device B and the flange of the longitudinal beam and the number of the adjusted steel blocks are determined according to the transverse adjustment quantity of the steel bolster beam body;
step 7, the cut steel rail is moved back to the rail again to be installed on a fastener at the upper part of the steel pad beam, two ends of the cut steel rail are connected with a normal line steel rail through clamping plates, and the geometric line shape of the rail is accurately adjusted to meet the requirements of safety and stability of a train, so that the construction of a temporary overhead line is completed;
and 8, after the temporary overhead line is completed, repairing and restoring the diseases within the span range of the steel bolster, removing the temporary steel rail and the temporary overhead device after the repairing of the diseases is completed, paving the track slab again, and recovering the normal line operation.
Further, when a plurality of continuous track plates in the ballastless track have diseases, a temporary line is erected by adopting a plurality of sets of overhead devices, only one track plate is replaced by one set of overhead device at one skylight point, and the temporary line of a plurality of track plate sections is erected by dividing the skylight point, and the method comprises the following steps:
1) Cutting a joint between the rail and the rail plates of the renovation section at a first skylight point, cutting the rail into a section by each two rail plates, and temporarily connecting the cut rail with a normal line rail by using a rail clamping plate;
2) Starting from a second skylight point, installing a hole steel bolster at one skylight point, sequentially completing the installation of the porous steel bolster according to a method for erecting a temporary line when a single track plate is damaged, and connecting the beam ends of every two adjacent steel bolsters by using a connecting plate in the installation process;
3) And after the temporary overhead line is completed, repairing and restoring the damaged section, and after the repairing is completed, sequentially removing the temporary overhead device, paving a new track plate and recovering the line operation according to the progress of paving a track plate at one skylight point from one end of the section.
The beneficial effects of the invention are as follows:
the invention relates to a temporary overhead device for a line for ballastless track disease treatment, which mainly aims at designing a steel bolster structure. The two longitudinal beams of the steel bolster are designed into a box section, and the beam body is ensured to have enough bending rigidity and length by reasonably selecting the sizes of the flange plates and the web plates, so that one CRTS II type track plate can be just replaced by one hole steel bolster, loose sleepers in the original overhead scheme of 'steel bolster + sleeper' are eliminated (such as the Chinese patent of the invention with the application number of 201610605003.7), and the integrity and the construction convenience of an overhead line are improved; compared with the span of the steel bolster (about 4000 mm) in the Chinese invention patent with the application number of 201610605003.7, the method increases the construction range for disease control; the beam design in the steel bolster is formed by welding a plurality of steel plates, and compared with the steel bolster in the Chinese patent of application number 201610605003.7, the beam design in the steel bolster enhances the bearing capacity of a single beam, reduces the number of beams used for each hole of the steel bolster, and correspondingly increases the construction space above the steel bolster.
Secondly, the overhead device can realize the adjustment of the vertical and transverse positions of the beam body by reasonably designing the structural forms of the support and the limiting device, so that the overhead device can be suitable for certain special construction conditions needing to be adjusted in a linear shape; through the connection between design steel floorplan and the steel floorplan, the porous beam can be used to replace the continuous track boards of the many broken down in proper order, form the continuous overhead structure of multispan, improve the wholeness of temporary overhead line and resist the ability of horizontal and vertical deformation, improved the efficiency of construction, can satisfy some special construction conditions.
Drawings
FIG. 1 is a schematic plan layout of a temporary overhead device according to the present invention;
FIG. 2a is a schematic view of a connection plane structure of two steel joists;
FIG. 2b is a schematic view of a connecting elevation of two steel joists;
FIG. 3a is a schematic view of a planar structure of a steel bolster;
FIG. 3b is a schematic cross-sectional view of a steel bolster;
FIG. 4a is a schematic view of a mounting structure of the support;
fig. 4b is a schematic plan view of the steel plate a;
fig. 4c is a schematic plan view of a steel plate B;
FIG. 5a is a schematic view of the positioning device A;
FIG. 5b is a schematic side view of the limiting device A;
fig. 5c is a schematic elevational view of the limiting device a with the first adjusting steel block installed;
FIG. 5d is a schematic view of the structure of the first U-shaped card;
FIG. 6a is a schematic side view of the limiting device B;
FIG. 6B is a schematic elevational view of the positioning device B;
FIG. 6c is a top view of the restriction device B;
fig. 6d is a schematic elevational view of the limiting device B with the second adjusting steel block installed;
FIG. 6e is a schematic diagram of a second U-shaped card;
the steel rail comprises a 1-steel backing beam, a 2-support, a 3-limiting device A, a 4-limiting device B, a 5-fastener, a 6-steel rail, a 7-rail plate, an 8-connecting plate, a 9-high-strength bolt, a 10-longitudinal beam, an 11-small cross beam, a 12-web plate, a 13-stiffening plate, a 21-rubber bearing plate, a 22-steel plate A, a 23-steel plate B, a 31-first adjusting steel block, a 32-first U-shaped clamp, a 41-second adjusting steel block and a 42-second U-shaped clamp.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
A temporary overhead device for a line for ballastless track disease treatment comprises a steel bolster 1, a support 2, a limiting device and a fastener 5;
the steel bolster 1 consists of two longitudinal beams 10 and a plurality of small cross beams 11 positioned between the two longitudinal beams 10, the two longitudinal beams 10 are respectively positioned under two steel rails 6, and the small cross beams 11 are transversely arranged along the rails; the longitudinal beam 10 is formed by welding steel plates and is in a box-shaped section, and a plurality of fasteners 5 are arranged on the upper flange of the longitudinal beam 10 and used for locking the steel rail 6 and the longitudinal beam 10; two ends of the two longitudinal beams 10 are respectively supported on the track concrete supporting layer through the support 2;
limiting devices A3 are arranged at the joints of the longitudinal beams 10 and the support 2, and the limiting devices A3 are positioned at the outer sides of the longitudinal beams 10 and used for limiting the transverse displacement of the steel bolster body; the connection parts of the longitudinal beam 10 and the first small cross beam 11 and the last small cross beam 11 are respectively provided with a limiting device B4, and the limiting devices B4 are positioned at the inner sides of the longitudinal beam 10 and are used for limiting the transverse and longitudinal displacement of the steel pad beam body; and the limiting device A3 and the limiting device B4 are fixed on the track concrete supporting layer through chemical anchor bolts.
Further, the total length of the steel bolster 1 is 6300mm; and the transverse and longitudinal central lines of the steel bolster 1 are respectively overlapped with the transverse and longitudinal central lines of the replaced track slabs.
Further, when only one track plate in the ballastless track line is damaged, a temporary line is erected by replacing the damaged track plate by adopting a set of overhead device, and a CRTS II type track plate is just replaced by a hole steel bolster 1; when a plurality of continuous track plates in the ballastless track line are subjected to disease, a temporary line is sequentially replaced and erected by adopting a plurality of sets of overhead devices for the track plates in the disease range, and the plurality of sets of overhead devices comprise porous steel cushion beams 1.
Further, the porous steel bolster 1 is a multi-span continuous structure formed by connecting a plurality of single-hole steel bolsters 1 in series through connecting plates 8; two long round holes are respectively formed in two ends of the connecting plate 8, two round holes are formed in corresponding positions of longitudinal beam webs 12 of two adjacent single-hole steel cushion beams 1, and the webs 12 of the two adjacent single-hole steel cushion beams 1 are connected through the connecting plate 8 and the high-strength bolts 9.
Further, the upper flange and the lower flange of the longitudinal beam 10 extend out of the web 12 for a certain length, a plurality of stiffening plates 13 are welded on the longitudinal beam 10 at intervals along the length direction, and the stiffening plates 13 are vertically fixed between the upper flange and the lower flange and the web 12; the small cross beam 11 is formed by welding steel plates, and two ends of the small cross beam 11 are connected with the stiffening plate 13 through high-strength bolts 9.
Further, the support 2 is composed of a steel plate and a rubber bearing plate 21, wherein the steel plate comprises a steel plate A22 and a steel plate B23, and the thickness of the steel plate A22 and the steel plate B23 is 20 mm-50 mm; the top surface of the steel plate A22 is provided with a square groove for installing the rubber bearing plate 21, and the bottom surface of the steel plate A22 is provided with a circular groove; the top surface of the steel plate B23 is provided with a circular boss matched with the circular groove, and the bottom surface of the steel plate B23 is also provided with a circular groove; the height of the support 2 is adjusted through the cooperation of the steel plate A22 and the steel plate B23.
Further, the method comprises the steps of,
the limiting device A3 is an L-shaped angle steel formed by welding a first horizontal steel plate and a first vertical steel plate, the first horizontal steel plate is fixed on a track concrete supporting layer through a chemical anchor bolt, and the first vertical steel plate is attached to a lower flange at the outer side of the longitudinal beam 10 and used for limiting the transverse displacement of a steel pad beam body; a stiffening plate which is arranged vertically is arranged between the first horizontal steel plate and the first vertical steel plate;
the limiting device B4 is formed by welding a second horizontal steel plate and three second vertical steel plates, the top view of the limiting device B4 is U-shaped, and the second horizontal steel plate is fixed on a track concrete supporting layer through a chemical anchor bolt; the middle second vertical steel plate is attached to the lower flange on the inner side of the longitudinal beam 10 and used for limiting the transverse displacement of the steel pad beam body; and a second vertical steel plate at one side is attached to the small cross beam 11 and is used for limiting the longitudinal displacement of the steel bolster body.
Further, the method comprises the steps of,
a plurality of first adjusting steel blocks 31 are arranged on the outer side of the first vertical steel plate of the limiting device A3 through first U-shaped clamps 32, and the first adjusting steel blocks 31 on the outermost side are attached to the lower flange on the outer side of the longitudinal beam 10 and are used for limiting the transverse displacement of the beam body of the steel pad beam 1; two openings corresponding to the first U-shaped clamp 32 are formed in the first vertical steel plate, and the transverse position of the steel cushion beam 1 is adjusted through the number and the thickness of the selected first adjusting steel blocks 31;
a plurality of second adjusting steel blocks 41 are arranged on the outer side of the second vertical steel plate in the middle of the limiting device B4 through second U-shaped clamps 42, and the second adjusting steel blocks 41 on the outermost side are attached to the lower flange on the inner side of the longitudinal beam 10 and are used for limiting the transverse displacement of the beam body of the steel pad beam 1; two openings corresponding to the second U-shaped clamps 42 are formed in the middle second vertical steel plate, and the transverse position of the steel cushion beam 1 is adjusted through the number and the thickness of the second adjusting steel blocks 41.
A method for erecting a temporary line by using a line temporary overhead device for ballastless track defect repair, when only one track plate in the ballastless track line has defects, comprises the following steps:
step 1, cutting the steel rail above the defect track plate by using a rail cutting machine, respectively extending the break points at the two ends of the steel rail to 3-5 m along the longitudinal direction of the rail and removing the cut steel rail;
step 2, chiseling wide and narrow joints at two ends of the disease track plate, releasing prestress of the disease track plate, and removing the disease track plate by using a jack, a lifting appliance and lifting equipment;
step 3, chiseling a mortar bonding layer on a track concrete supporting layer by using a chiseling instrument to ensure that the exposed supporting layer surface is smooth, cleaning the supporting layer surface, marking a support position by using an ink line through a cross mark on the cleaned supporting layer surface, and marking the end position of a steel tapping pad beam through a straight line;
step 4, paving a layer of asbestos pad on the surface of a supporting layer at the mounting position of the support, placing the support steel plate on the asbestos pad according to the support position marking line and the longitudinal and transverse central lines on the support steel plate, determining the height of the support steel plate according to the track line shape through advance calculation, and then mounting the rubber bearing plate in a groove on the support steel plate;
step 5, hoisting the steel bolster on the support by using hoisting equipment, and adjusting the shape of the steel bolster so that the longitudinal center line of the steel bolster coincides with the center line of the track, and the beam end of the steel bolster coincides with the marking line of the end part of the steel bolster;
step 6, installing a limiting device A at a support seat at the outer side of the longitudinal beam, installing a limiting device B at a first small cross beam and a last small cross beam at the inner side of the longitudinal beam, and respectively installing the limiting device A and the limiting device B tightly against a flange of the longitudinal beam when the transverse position adjustment of a steel bolster body is not needed; when the steel bolster beam body needs to be transversely moved, the distance between the limiting device A and the limiting device B and the flange of the longitudinal beam and the number of the adjusted steel blocks are determined according to the transverse adjustment quantity of the steel bolster beam body;
step 7, the cut steel rail is moved back to the rail again to be installed on a fastener at the upper part of the steel pad beam, two ends of the cut steel rail are connected with a normal line steel rail through clamping plates, and the geometric line shape of the rail is accurately adjusted to meet the requirements of safety and stability of a train, so that the construction of a temporary overhead line is completed;
and 8, after the temporary overhead line is completed, repairing and restoring the diseases within the span range of the steel bolster, removing the temporary steel rail and the temporary overhead device after the repairing of the diseases is completed, paving the track slab again, and recovering the normal line operation.
When diseases appear on a plurality of continuous track boards in the ballastless track, a temporary line is erected by adopting a plurality of sets of overhead devices, one track board is replaced by only one set of overhead device at one skylight point, and the temporary line of a plurality of track board sections is erected by dividing the skylight point, and the method comprises the following steps:
1) Cutting a joint between the rail and the rail plates of the renovation section at a first skylight point, cutting the rail into a section by each two rail plates, and temporarily connecting the cut rail with a normal line rail by using a rail clamping plate;
2) Starting from a second skylight point, installing a hole steel bolster at one skylight point, sequentially completing the installation of the porous steel bolster according to a method for erecting a temporary line when a single track plate is damaged, and connecting the beam ends of every two adjacent steel bolsters by using a connecting plate in the installation process;
3) And after the temporary overhead line is completed, repairing and restoring the damaged section, and after the repairing is completed, sequentially removing the temporary overhead device, paving a new track plate and recovering the line operation according to the progress of paving a track plate at one skylight point from one end of the section.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The temporary overhead line device for ballastless track disease treatment is characterized by comprising a steel bolster (1), a support (2), a limiting device and a fastener (5);
the steel bolster (1) consists of two longitudinal beams (10) and a plurality of small cross beams (11) positioned between the two longitudinal beams (10), the two longitudinal beams (10) are respectively positioned under the two steel rails (6), and the small cross beams (11) are transversely arranged along the rails; the longitudinal beam (10) is formed by welding steel plates and is in a box-shaped section, and a plurality of fasteners (5) are arranged on the upper flange of the longitudinal beam (10) and used for locking the steel rail (6) and the longitudinal beam (10); two ends of the two longitudinal beams (10) are respectively supported on the track concrete supporting layer through the support (2);
limiting devices A (3) are arranged at the joints of the longitudinal beams (10) and the support (2), and the limiting devices A (3) are positioned at the outer sides of the longitudinal beams (10) and used for limiting the transverse displacement of the steel pad beam body; limiting devices B (4) are respectively arranged at the joints of the longitudinal beams (10) and the first small cross beam (11) and the last small cross beam (11), and the limiting devices B (4) are positioned at the inner sides of the longitudinal beams (10) and used for limiting the transverse and longitudinal displacement of the steel bolster body; the limiting device A (3) and the limiting device B (4) are fixed on the track concrete supporting layer through chemical anchor bolts;
when only one track plate in the ballastless track line has diseases, a temporary line is erected by replacing the track plate with the diseases by adopting a set of overhead device; when a plurality of continuous track plates in the ballastless track line generate diseases, sequentially replacing and erecting a temporary line for the track plates in the disease range by adopting a plurality of sets of overhead devices, wherein the plurality of sets of overhead devices comprise porous steel cushion beams;
the porous steel bolster is a multi-span continuous structure formed by connecting a plurality of single-hole steel bolsters in series through connecting plates (8); two long round holes are respectively formed at two ends of the connecting plate (8), two round holes are formed at corresponding positions of longitudinal beam webs of two adjacent single-hole steel cushion beams, and webs (12) of the two adjacent single-hole steel cushion beams are connected through the connecting plate (8) and the high-strength bolts (9);
the upper flange and the lower flange of the longitudinal beam (10) extend out of the web plate (12) for a certain length, a plurality of stiffening plates (13) are welded on the longitudinal beam (10) at intervals along the length direction of the longitudinal beam, and the stiffening plates (13) are vertically fixed between the upper flange and the lower flange and the web plate (12); the small cross beam (11) is formed by welding steel plates, and two ends of the small cross beam (11) are connected with the stiffening plate (13) through high-strength bolts (9).
2. The line temporary overhead device for ballastless track defect remediation according to claim 1, wherein the total length of the steel bolster (1) is 6300mm; and the transverse and longitudinal central lines of the steel cushion beams (1) are respectively overlapped with the transverse and longitudinal central lines of the replaced track plates.
3. The line temporary overhead device for ballastless track defect remediation of claim 1, wherein a perforated steel bolster is replaced with a CRTS II type track slab.
4. The temporary overhead line device for ballastless track disease remediation according to claim 1, wherein the support (2) consists of a steel plate and a rubber bearing plate (21), wherein the steel plate comprises a steel plate A (22) and a steel plate B (23), and the thicknesses of the steel plate A (22) and the steel plate B (23) are 20-50 mm; the top surface of the steel plate A (22) is provided with a square groove for installing the rubber bearing plate (21), and the bottom surface of the steel plate A (22) is provided with a circular groove; the top surface of the steel plate B (23) is provided with a circular boss matched with the circular groove, and the bottom surface of the steel plate B (23) is also provided with the circular groove; the height of the support (2) is adjusted through the cooperation of the steel plate A (22) and the steel plate B (23).
5. The temporary overhead line device for ballastless track defect remediation of claim 1,
the limiting device A (3) is an L-shaped angle steel formed by welding a first horizontal steel plate and a first vertical steel plate, the first horizontal steel plate is fixed on a track concrete supporting layer through a chemical anchor bolt, and the first vertical steel plate is attached to a lower flange at the outer side of the longitudinal beam (10) and used for limiting the transverse displacement of a steel pad beam body; a stiffening plate which is arranged vertically is arranged between the first horizontal steel plate and the first vertical steel plate;
the limiting device B (4) is formed by welding a second horizontal steel plate and three second vertical steel plates, the top view of the limiting device B (4) is U-shaped, and the second horizontal steel plate is fixed on a track concrete supporting layer through a chemical anchor bolt; the middle second vertical steel plate is attached to the lower flange at the inner side of the longitudinal beam (10) and used for limiting the transverse displacement of the steel pad beam body; and a second vertical steel plate at one side is attached to the small cross beam (11) and used for limiting the longitudinal displacement of the steel bolster body.
6. The temporary overhead line device for ballastless track defect remediation of claim 5,
a plurality of first adjusting steel blocks (31) are arranged on the outer side of a first vertical steel plate of the limiting device A (3) through a first U-shaped clamp (32), and the first adjusting steel blocks (31) on the outermost side are attached to the lower flange on the outer side of the longitudinal beam (10) and are used for limiting the transverse displacement of the beam body of the steel cushion beam (1); two openings corresponding to the first U-shaped clamp (32) are formed in the first vertical steel plate, and the transverse position of the steel cushion beam (1) is adjusted through the number and the thickness of the selected first adjusting steel blocks (31);
a plurality of second adjusting steel blocks (41) are arranged on the outer side of the second vertical steel plate in the middle of the limiting device B (4) through second U-shaped clamps (42), and the second adjusting steel blocks (41) on the outermost side are attached to the lower flange on the inner side of the longitudinal beam (10) and are used for limiting the transverse displacement of the beam body of the steel cushion beam (1); two openings corresponding to the second U-shaped clamps (42) are formed in the middle second vertical steel plate, and the transverse position of the steel cushion beam (1) is adjusted through the number and the thickness of the selected second adjusting steel blocks (41).
7. A method for erecting a temporary line using the line temporary overhead device for ballastless track defect repair according to claim 1, wherein when only one track slab in the ballastless track line is defective, the method for erecting a temporary line using the overhead device comprises the steps of:
step 1, cutting the steel rail above the defect track slab by using a rail cutting machine, respectively extending the break points at the two ends of the steel rail out of the defect track slab end for 3-5 m along the longitudinal direction of the rail, and removing the cut steel rail;
step 2, chiseling wide and narrow joints at two ends of the disease track plate, releasing prestress of the disease track plate, and removing the disease track plate by using a jack, a lifting appliance and lifting equipment;
step 3, chiseling a mortar bonding layer on a track concrete supporting layer by using a chiseling instrument to ensure that the exposed supporting layer surface is smooth, cleaning the supporting layer surface, marking a support position by using an ink line through a cross mark on the cleaned supporting layer surface, and marking the end position of a steel tapping pad beam through a straight line;
step 4, paving a layer of asbestos pad on the surface of a supporting layer at the mounting position of the support, placing the support steel plate on the asbestos pad according to the support position marking line and the longitudinal and transverse central lines on the support steel plate, determining the height of the support steel plate according to the track line shape through advance calculation, and then mounting the rubber bearing plate in a groove on the support steel plate;
step 5, hoisting the steel bolster on the support by using hoisting equipment, and adjusting the shape of the steel bolster so that the longitudinal center line of the steel bolster coincides with the center line of the track, and the beam end of the steel bolster coincides with the marking line of the end part of the steel bolster;
step 6, installing a limiting device A at a support seat at the outer side of the longitudinal beam, installing a limiting device B at a first small cross beam and a last small cross beam at the inner side of the longitudinal beam, and respectively installing the limiting device A and the limiting device B tightly against a flange of the longitudinal beam when the transverse position adjustment of a steel bolster body is not needed; when the steel bolster beam body needs to be transversely moved, the distance between the limiting device A and the limiting device B and the flange of the longitudinal beam and the number of the adjusted steel blocks are determined according to the transverse adjustment quantity of the steel bolster beam body;
step 7, the cut steel rail is moved back to the rail again to be installed on a fastener at the upper part of the steel pad beam, two ends of the cut steel rail are connected with a normal line steel rail through clamping plates, and the geometric line shape of the rail is accurately adjusted to meet the requirements of safety and stability of a train, so that the construction of a temporary overhead line is completed;
and 8, after the temporary overhead line is completed, repairing and restoring the diseases within the span range of the steel bolster, removing the temporary steel rail and the temporary overhead device after the repairing of the diseases is completed, paving the track slab again, and recovering the normal line operation.
8. The method for installing a temporary line using a line temporary overhead device for ballastless track defect correction according to claim 7, wherein when a defect occurs in a continuous plurality of track plates in a ballastless track, the temporary line is installed using a plurality of overhead devices, only one track plate is replaced with one overhead device at one skylight point, and the installation of the temporary line in a plurality of track plate sections is completed by dividing the plurality of skylight points, comprising the steps of:
1) Cutting a joint between the rail and the rail plates of the renovation section at a first skylight point, cutting the rail into a section by each two rail plates, and temporarily connecting the cut rail with a normal line rail by using a rail clamping plate;
2) Starting from a second skylight point, installing a hole steel bolster at one skylight point, sequentially completing the installation of the porous steel bolster according to a method for erecting a temporary line when a single track plate is damaged, and connecting the beam ends of every two adjacent steel bolsters by using a connecting plate in the installation process;
3) And after the temporary overhead line is completed, repairing and restoring the damaged section, and after the repairing is completed, sequentially removing the temporary overhead device, paving a new track plate and recovering the line operation according to the progress of paving a track plate at one skylight point from one end of the section.
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| CN201811145634.0A CN109183530B (en) | 2018-09-29 | 2018-09-29 | Line temporary overhead device and method for ballastless track disease remediation |
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| CN201811145634.0A CN109183530B (en) | 2018-09-29 | 2018-09-29 | Line temporary overhead device and method for ballastless track disease remediation |
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| CN109944118A (en) * | 2019-03-26 | 2019-06-28 | 郑州铁路工程有限公司 | A kind of rail track makes somebody a mere figurehead unit rail away from limiter |
| CN110106751B (en) * | 2019-04-17 | 2020-10-02 | 中铁第四勘察设计院集团有限公司 | Settlement adjustment method suitable for CRTS II type plate ballastless track |
| CN110029531B (en) * | 2019-04-23 | 2020-10-27 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Temporary high-speed rail ballastless track line overhead device and method suitable for high-speed traveling |
| CN111287024B (en) * | 2020-02-21 | 2021-10-12 | 中铁第四勘察设计院集团有限公司 | Connecting device and ballastless track |
| CN112112049A (en) * | 2020-10-16 | 2020-12-22 | 中铁西安勘察设计研究院有限责任公司 | Construction method for replacing existing railway roadbed with railway simply-supported T-beam bridge |
| CN113111554B (en) * | 2021-04-09 | 2024-03-08 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Deformation index calculation method for temporary overhead line of high-speed railway passing 80km per hour |
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