CN110029531B - Temporary high-speed rail ballastless track line overhead device and method suitable for high-speed traveling - Google Patents
Temporary high-speed rail ballastless track line overhead device and method suitable for high-speed traveling Download PDFInfo
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- CN110029531B CN110029531B CN201910328265.7A CN201910328265A CN110029531B CN 110029531 B CN110029531 B CN 110029531B CN 201910328265 A CN201910328265 A CN 201910328265A CN 110029531 B CN110029531 B CN 110029531B
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 281
- 239000010959 steel Substances 0.000 claims abstract description 281
- 230000007704 transition Effects 0.000 claims abstract description 59
- 241001669679 Eleotris Species 0.000 claims description 27
- 238000006073 displacement reaction Methods 0.000 claims description 20
- 238000010276 construction Methods 0.000 claims description 15
- 238000003825 pressing Methods 0.000 claims description 13
- 239000000126 substance Substances 0.000 claims description 13
- 238000005520 cutting process Methods 0.000 claims description 12
- 230000007547 defect Effects 0.000 claims description 12
- 238000003466 welding Methods 0.000 claims description 10
- 239000004570 mortar (masonry) Substances 0.000 claims description 9
- 238000004140 cleaning Methods 0.000 claims description 7
- 239000010425 asbestos Substances 0.000 claims description 6
- 229910052895 riebeckite Inorganic materials 0.000 claims description 6
- 238000010030 laminating Methods 0.000 claims description 4
- 239000002436 steel type Substances 0.000 claims description 2
- 210000003141 lower extremity Anatomy 0.000 claims 1
- 201000010099 disease Diseases 0.000 abstract description 15
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 abstract description 15
- 230000008030 elimination Effects 0.000 abstract description 2
- 238000003379 elimination reaction Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 8
- 230000008439 repair process Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
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- 241000272165 Charadriidae Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
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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
- E01B1/00—Ballastway; Other means for supporting the sleepers or the track; Drainage of the ballastway
- E01B1/002—Ballastless track, e.g. concrete slab trackway, or with asphalt layers
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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
- E01B2204/00—Characteristics of the track and its foundations
- E01B2204/09—Ballastless systems
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Abstract
The invention relates to a temporary overhead device and a temporary overhead method for a high-speed rail ballastless track line, which are suitable for high-speed traveling and belong to the technical field of disease elimination of the railway ballastless track. The overhead device comprises a steel pad beam, a support, a limiting device and a fastener, when only a track slab range is damaged, the track slab is just replaced by the steel pad beam with one hole, the steel pad beam comprises two longitudinal beams, a middle cross beam and an end cross beam, the longitudinal beams are box-shaped beams, and the cross sections of upper flange plates and lower flange plates of the longitudinal beams are designed in a variable size mode. When the damage occurs in the connection range of the two track plates, the steel pad beam is erected above the damage area, and transition sections with corresponding lengths are arranged between the two ends of the steel pad beam body and the normal track plates for supporting. The invention obviously improves the rigidity level of the steel pad beam body, and reasonably designs the structural form of the limiting device, so that the erected temporary line adapts to the high-speed driving condition.
Description
Technical Field
The invention relates to a temporary overhead device and a temporary overhead method for a high-speed rail ballastless track line, which are suitable for high-speed traveling and belong to the technical field of disease elimination of the railway ballastless track.
Background
According to the ballastless track operation practice in recent years in China, the track structure state is generally normal, but under the action of long-term train operation load and external environment, track plate cracks, mortar layer bonding failure, supporting layer damage and other diseases begin to appear on the local part of a line, so that the geometric form and position of the track are poor, and the stability and the safety of the train in high-speed operation are influenced. Once a disease occurs in the track structure, measures need to be taken in time to repair the disease. At present, cracks and open joints with small width in a track structure can be repaired by a surface sealing method or a low-pressure grouting method, and the repairing work is simple and easy to implement; for the diseases such as large-area mortar layer bonding failure or supporting layer damage, the diseases can be cured only by chiseling and cleaning the damaged part and pouring the mortar layer or the supporting layer again, the repair difficulty is relatively high, and the repair work can be completed only by using a plurality of skylight points. For the repair work of the skylight crossing point, measures are needed to be taken to temporarily overhead the existing line, and the repair work is carried out under the condition that the train operation is not influenced.
At present, few temporary overhead structure researches aiming at the disease treatment of the ballastless track exist in China, and the traditional overhead scheme, such as a rail hanging/buckling method, an I-shaped steel beam method, a D-shaped beam-erecting method and the like, is difficult to be suitable for temporary overhead of the ballastless track line. The invention discloses a temporary steel rail supporting device for replacing a ballastless track supporting layer, which is provided by the Chinese invention patent with the application number of 201610605003.7. The steel pad beam main body is composed 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 and connected through the cross beams, and the two ends of the steel pad beam are supported on a concrete supporting layer through supports and erected above a damaged area to form a certain construction space. And arranging a corresponding number of transition sleepers between the two ends of the steel pad beam and the normal track slab according to different lengths. The steel pad beam and the sleeper support the operation line steel rail together to form a temporary overhead line. In the overhead scheme of 'steel pad beam + sleeper' proposed by the chinese patent with application number 201610605003.7, because the large longitudinal beam of the steel pad beam adopts an i-shaped section form, the span of the beam body is small, and a blank section which is not supported by the beam body can appear between the two ends of the beam or one beam end and the normal track plate, a plurality of sleeper support line rails need to be arranged in the blank section. The overhead line consists of a steel pad beam and a plurality of loose sleepers, so that the construction process is complicated, and the integrity of the overhead line is poor; the overhead scheme is adopted to erect temporary lines, the speed of a train is limited to 45km/h, and the line operation efficiency is influenced.
Disclosure of Invention
In order to solve the problems, the invention designs a ballastless track line temporary overhead device and a ballastless track line temporary overhead method suitable for high-speed driving conditions aiming at a II-type plate ballastless track with more diseases, so that the integrity and the construction convenience of an overhead structure are improved, and a train can run at a higher speed.
The invention is realized by the following technical scheme:
when a high-speed railway ballastless track is damaged in a track plate range, the temporary line overhead device comprises a steel backing beam, a support, a limiting device and a fastener, wherein one hole of the steel backing beam is just replaced by one II-type track plate; the steel pad beam consists of two longitudinal beams, an end cross beam and a middle cross beam, wherein the end cross beam and the middle cross beam are positioned between the two longitudinal beams; the top of the longitudinal beam is provided with a plurality of fasteners for locking the steel rail and the longitudinal beam; the bottoms of the two ends of the two longitudinal beams are supported on a track concrete supporting layer through a support;
the longitudinal beam is a box-shaped beam and comprises an upper flange plate, a lower flange plate, a web plate and stiffening plates arranged among the upper flange plate, the lower flange plate and the web plate; the sections of the upper flange plate and the lower flange plate of the longitudinal beam are wide in the middle and narrow at two ends along the longitudinal direction, and the sections of the two webs are kept unchanged; the inner side and the outer side of the end parts of the two longitudinal beams are respectively provided with a limiting device;
the end cross beam and the middle cross beam are welded by steel plates; two ends of the end cross beam are respectively and horizontally connected with stiffening plates on the longitudinal beam through high-strength bolts; and at the middle position of the longitudinal beam, two ends of the middle cross beam are respectively and vertically connected with the stiffening plates on the longitudinal beam through high-strength bolts, wherein the stiffening plates connected with the end cross beam on the longitudinal beam are horizontally arranged, and the other stiffening plates are vertically arranged.
Further, when the ballastless track of the high-speed rail is damaged in the connecting range of the two track plates, the two track plates are simultaneously dismantled, the steel pad beam is erected above a damaged area, and transition section supports with corresponding lengths are arranged between the two ends of the steel pad beam body and the normal track plates;
the transition section support comprises a steel member A, a concrete sleeper and a fastener; the concrete sleeper's both ends are respectively through the bolt fastening have steel member A, steel member A includes the roof and is located two vertical webs, two vertical connecting plates of roof below, vertical connecting plate with vertical web is perpendicular and crossing setting, steel member A is located under two rails, steel member A's roof is equipped with fastener anchor bolt hole, locks rail and steel member A through the fastener.
Further, each steel member A is connected with the end parts of the two concrete sleepers; the connection between the steel members A is realized through a steel member B; the steel member B also comprises a top plate, two vertical webs and two vertical connecting plates, wherein the two vertical webs and the two vertical connecting plates are positioned below the top plate, the vertical connecting plates are perpendicular to and intersected with the vertical webs, and first connecting bolt holes for connecting the top plates are formed in the top plates of the steel member A and the steel member B; and vertical connecting plates of the steel member A and the steel member B are respectively provided with a second connecting bolt hole for connecting the concrete sleeper.
Furthermore, limiting devices A are respectively arranged at the joints of the two outer ends of the two longitudinal beams and the support and are used for limiting the transverse displacement and the vertical displacement of the steel pad beam body; the limiting devices B are arranged at the joints of the two ends of the inner sides of the two longitudinal beams and the end cross beam respectively and are positioned at the two sides of the end cross beam and used for limiting the transverse and longitudinal displacement of the steel pad beam body; and the limiting device A and the limiting device B are fixed on the track concrete supporting layer through a plurality of chemical anchor bolts.
Furthermore, limiting devices C are arranged at the two ends of the transition section support and on the outer sides of the two ends of the concrete sleeper and used for limiting the transverse displacement of the transition section support; and a limiting device C is also arranged in the middle of the first or second concrete sleeper at the end part of the transition section support and is used for limiting the longitudinal displacement of the transition section support.
Furthermore, the limiting device A consists of a stop block, a pressing block and a high-strength bolt, wherein the stop block and the pressing block are both formed by welding steel plates and are in an angle steel shape; the stop block horizontal steel plate is provided with a bolt hole, the limiting device A is fixed on the track concrete supporting layer through a chemical anchor bolt, and the stop block vertical steel plate is attached to the side face of the lower flange plate of the longitudinal beam and used for limiting the transverse displacement of the steel pad beam body; the vertical steel plate of the stop block is provided with a long round hole, the pressing block is provided with a round hole, the pressing block is connected with the vertical steel plate of the stop block through a high-strength bolt, and the pressing block horizontal steel plate is attached to the top surface of the lower flange plate of the longitudinal beam and used for limiting the vertical displacement of the beam body of the steel pad beam.
Furthermore, the limiting device B is formed by welding a horizontal steel plate and three vertical steel plates, and the top view of the limiting device B is U-shaped; be provided with the bolt hole on the horizontal steel sheet, fix stop device B on track concrete supporting layer through the chemical crab-bolt, the laminating of flange board side under middle vertical steel sheet and the longeron for the restriction steel pad roof beam body lateral shifting, the side laminating of the vertical steel sheet of one side and end crossbeam is used for restricting the roof beam body longitudinal movement.
Furthermore, the limiting device C is formed by welding steel plates and is in an angle steel shape, bolt holes are formed in the horizontal steel plates, and the limiting device C is fixed on the track concrete supporting layer through chemical anchor bolts; the vertical steel plate is abutted against the outer side of the end part of the concrete sleeper or the side surface of the middle position of the concrete sleeper.
A method for erecting a temporary line by adopting a temporary overhead device of a high-speed rail ballastless track line suitable for high-speed traveling comprises the following steps when only one track plate area in the high-speed rail ballastless track is damaged:
1) cutting the steel rail above the damaged rail plate by using a rail cutting machine, respectively extending the breakpoints at two ends of the steel rail out of the rail plate end by 3-5 m along the longitudinal direction of the rail, and removing the cut steel rail;
2) chiseling wide and narrow joints at two ends of a track slab, releasing the prestress of the track slab, and removing the track slab by using a jack, a lifting appliance and lifting equipment;
3) chiseling a mortar bonding layer on a track concrete supporting layer by using a chiseling instrument to ensure that the surface of the exposed supporting layer is smooth, cleaning the surface of the supporting layer, marking the position of a support by using an ink line in a cross shape on the cleaned surface of the supporting layer, and marking the end position of a steel pad beam by using a straight line;
4) according to the plane size of the support steel plate, chiseling a groove on the surface of a support layer at the mounting position of the support, paving a layer of asbestos pad in the groove, placing the support steel plate on the asbestos pad, and then mounting the rubber bearing plate in the groove on the support steel plate;
5) hoisting the steel pad beam on the support by using hoisting equipment, and adjusting the shape and position of the beam body to ensure that the longitudinal central line of the steel pad beam is superposed with the central line of the track, and the end of the beam is superposed with the end marking line;
6) a limiting device A is arranged at a support at the outer side of the longitudinal beam, and a limiting device B is arranged at a cross beam at the inner side end of the longitudinal beam;
7) moving the cut steel rail back to the rail again to be installed on a fastener on the upper part of the steel pad beam, connecting two ends of the cut steel rail with the steel rail of the normal line through clamping plates, and accurately adjusting the geometric linear shape of the rail to meet the requirements of safety and stability of the train, so that the construction of the temporary overhead line is completed;
8) after finishing the temporary overhead line, the defects are repaired within the span range of the steel backing beam, after the defects are repaired, the temporary steel rail and the temporary overhead device are removed, the track slab is paved again, and the line is recovered.
The utility model provides an adopt the temporary overhead device of high-speed railway ballastless track circuit to erect temporary line suitable for high-speed driving, when the high-speed railway ballastless track disease takes place in the scope that two track boards are connected, demolish these two track boards simultaneously, erect the steel pad roof beam in disease district top, set up the changeover portion support between steel pad roof beam body both ends and normal track board, specifically include following step:
1) cutting the steel rails above the two damaged rail plates by using a rail cutting machine, respectively extending the breakpoints at the two ends of the steel rails out of the ends of the rail plates by 3-5 m along the longitudinal direction of the rails, and removing the cut steel rails;
2) chiseling wide and narrow joints at two ends of the track slab, releasing the prestress of the track slab, and removing the two track slabs by using a jack, a lifting appliance and lifting equipment;
3) chiseling a mortar bonding layer on a track concrete supporting layer by using a chiseling instrument to ensure that the surface of the exposed supporting layer is smooth, cleaning the surface of the supporting layer, marking the position of a support and the positions of concrete sleepers at two ends of a transition section by using ink lines in a cross shape on the surface of the cleaned supporting layer, and marking the end position of a steel pad beam by using a straight line;
4) installing a support, hoisting a steel pad beam on the support by using hoisting equipment, and adjusting the shape and position of the steel pad beam body to ensure that the longitudinal central line of the steel pad beam is superposed with the central line of the track and the beam end is superposed with the end marking line; a limiting device A is arranged at a support at the outer side of the longitudinal beam, and a limiting device B is arranged at a cross beam at the inner side end of the longitudinal beam;
5) hoisting the transition section support on the transition section bearing layer by using hoisting equipment, and adjusting the shape and position of the transition section support to ensure that the longitudinal center line of the transition section support coincides with the center line of the track, and the marking line on the concrete sleeper at the end part coincides with the marking line on the bearing layer;
6) limiting devices C are arranged at the end parts of the sleepers at the two ends of the transition section support to limit the transverse movement of the transition section support, and limiting devices C are arranged at the middle positions of the transition section support, close to the first or second sleeper at the end part, to limit the longitudinal movement of the transition section;
7) moving the cut steel rail back to the rail again to be installed on fasteners on the upper portions of the steel pad beam and the transition section support, connecting two ends of the cut steel rail with the normal line steel rail through clamping plates, and accurately adjusting the geometric line shape of the rail to meet the requirements of safety and stability of a train, so that construction of a temporary overhead line is completed;
8) after finishing the temporary overhead line, the defects are repaired within the span range of the steel backing beam, after the defects are repaired, the temporary steel rail and the temporary overhead device are removed, the track slab is paved again, and the line is recovered.
The invention has the beneficial effects that:
1. the two longitudinal beams of the steel pad beam are designed into box-shaped sections, the size of the sections of the two longitudinal beams is designed in a variable size along the length direction, the rigidity level of a beam body is obviously improved while a certain mounting space is ensured at the beam end support, and an erected temporary line can adapt to high-speed driving conditions; the stiffening plates connected with the end cross beams on the longitudinal beams are horizontally arranged, so that the transverse bending rigidity of the beam body can be obviously improved, the overall stability of the beam body is ensured, and the arrangement mode of the end cross beams is more reasonable.
2. Compared with the Chinese patent with the application number of 201610605003.7, the cross beam is formed by welding steel plates, the cross section size of the cross beam is reasonably designed, the bearing performance of a single cross beam is improved, the number of the steel pad beam cross beams is reduced on the whole, and if the hole steel pad beam is only provided with 2 middle cross beams and 2 end cross beams, the construction space above the steel pad beam is enlarged.
3. Through the structural style of reasonable design stop device A for it can realize horizontal and vertical spacing to the steel backing roof beam simultaneously, can prevent the roof beam body because of the high-speed upward beating that produces of driving.
4. By arranging the transition section support, the overhead device can be suitable for various working conditions.
Drawings
FIG. 1 is a plan view of a temporary line erected in the case of a defect within a track slab;
FIG. 2 is a plan view of a temporary line erected when a defect occurs at the joint of two track slabs;
FIG. 3 is a schematic view of a steel backing beam according to the present invention;
FIG. 4a is a schematic view of a connection structure of end cross beams and longitudinal beams;
FIG. 4b is a schematic cross-sectional view taken along line A-A of FIG. 4 a;
FIG. 4c is a schematic view of a connecting structure of the middle cross beam and the longitudinal beam;
FIGS. 5a and 5b are top and end side views, respectively, of an end cross-member;
FIGS. 5c and 5d are schematic side and end views of the intermediate beam;
FIG. 6a is a schematic view of a transition section support plan;
FIG. 6b is a schematic view of a transition section support profile;
FIG. 7a is a top view of steel member A;
FIG. 7b is a structural schematic diagram of a steel member A at a vertical connecting plate;
FIG. 7c is a side view of steel member A;
FIG. 8a is a top view of steel member B;
FIG. 8B is a structural schematic diagram of a steel member B at a vertical connecting plate;
FIG. 8c is a side view of steel member B;
FIG. 9a is a schematic view of a mounting structure of the support;
FIG. 9b is a schematic plan view of a steel plate of the support;
FIG. 10a is a side view of a stop device A;
FIG. 10b is a top view of the stop A;
FIG. 10c is a schematic view of the installation structure of the limiting device A;
FIG. 11a is a side view of the limiting device B at the middle vertical steel plate;
FIG. 11B is a top view of the stop device B;
FIG. 11c is a side view of the limiting device B at one side of the vertical steel plate;
FIG. 11d is a schematic view of the installation structure of the stopper B;
FIG. 12a is a top view of a retainer C;
FIG. 12b is a side view of the limiting device C at the position where the steel plate is vertical;
FIG. 12C is a side view of the retainer C;
the steel structure comprises 1-longitudinal beams, 2-middle beams, 3-end beams, 4-steel rails, 5-supports, 6-fasteners, 7-stiffening plates, 8-limiting devices A, 9-limiting devices B, 10-high-strength bolts, 11-track plates, 12-steel pad beams, 13-transition section supports, 14-limiting devices C, 15-steel members A, 16-steel members B, 17-concrete sleepers, 18-first connecting bolt holes, 19-second connecting bolt holes, 20-fastener anchoring bolt holes, 21-rubber bearing plates, 22-steel plates, 23-stoppers, 24-pressing blocks and 25-chemical anchor bolts.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
A temporary overhead device for a high-speed rail ballastless track line suitable for high-speed traveling comprises a steel backing beam 12, a support 5, a limiting device and a fastener 6, wherein when a high-speed rail ballastless track is damaged in a track plate range, as shown in figure 1. In this embodiment, the total length of the steel pad beam is about 6300mm, the span is about 5200mm, a hole steel pad beam can just replace a type II track plate, and the transverse and longitudinal center lines of the steel pad beam coincide with the transverse and longitudinal center lines of the replaced track plate respectively. The steel pad beam 12 consists of two longitudinal beams 1, two middle cross beams 2 and two end cross beams 3, wherein the two middle cross beams 2 and the two end cross beams 3 are positioned between the two longitudinal beams 1, and the two longitudinal beams 1 are respectively positioned right below two steel rails 4 and mainly play a role in supporting the steel rails of a line; the end cross beams 3 and the middle cross beam 2 are respectively perpendicular to the longitudinal beams 1. The top of the longitudinal beam 1 is provided with a plurality of fasteners 6 for locking the steel rail 4 and the longitudinal beam 1; the bottom parts of the two ends of the two longitudinal beams 1 are supported on a track concrete supporting layer through a support 5, and a certain construction space is formed within the span range of the beam body. And the inner side and the outer side of the end parts of the two longitudinal beams 1 are respectively provided with a limiting device.
The longitudinal beam 1 is a box-shaped beam and comprises an upper flange plate, a lower flange plate, a web plate and a stiffening plate 7 arranged between the upper flange plate, the lower flange plate and the web plate. The cross sections of the upper flange plate and the lower flange plate of the longitudinal beam 1 are both wide in the middle and narrow at the two ends, and the cross sections of the two webs are kept unchanged, as shown in fig. 3, the cross sections of the upper flange plate and the lower flange plate at sections of 972mm at the two ends of the beam are both 530mm multiplied by 30mm, the cross sections of the upper flange plate and the lower flange plate at sections of 4240mm in the middle of the beam are 730mm multiplied by 30mm, the sections with different sizes are in linear transition, and the cross sections of the two webs of the longitudinal beam are kept unchanged and are 190mm multiplied by 24mm, which is referred to fig. 4 a-4 c. The beam structure is shown in fig. 5a to 5d, wherein fig. 5a and 5b are schematic diagrams of end beam structures, and fig. 5c and 5d are schematic diagrams of middle beam structures. The small cross beams in the existing steel pad beam generally adopt channel steel, the number of the small cross beams arranged between two longitudinal beams is large, and the small cross beams are dense, so that the transverse rigidity and the overall stability of the steel pad beam can be guaranteed. In this implementation, every crossbeam is formed by two C shape components back to back combination, and the C shape component adopts the steel sheet welding, has improved the bearing capacity of single crossbeam, has reduced steel mat roof beam quantity on the whole, as shown in fig. 3, has increased steel mat roof beam top construction space. Bolt holes are formed in two ends of the cross beam, and the length of the end cross beam is about 1164mm, and the height of the end cross beam is about 250 mm; the middle beam is about 956mm long and about 220mm high. The end cross beams 3 and the middle cross beam 2 are connected with the stiffening plates 7 through high-strength bolts 10 so as to fix the cross beams on the longitudinal beams 1. Two ends of the end cross beam 3 are respectively and horizontally connected with stiffening plates 7 on the longitudinal beam 1 through high-strength bolts 10 at two ends of the longitudinal beam 1; and two ends of the middle cross beam 2 are vertically connected with stiffening plates 7 on the longitudinal beam 1 through high-strength bolts 10 respectively in the middle of the longitudinal beam, wherein the stiffening plates 7 connected with the end cross beam 3 on the longitudinal beam 1 are horizontally arranged, and the other stiffening plates 7 are vertically arranged.
As shown in fig. 9a, which is a schematic structural diagram of the support, the support 5 is composed of a steel plate 22 and a rubber bearing plate 21, the steel plate has a length of about 526mm, a width of about 300mm and a height of about 30mm, and a square groove is designed on the top surface of the steel plate, and the groove has a depth of about 3mm and is used for installing the rubber bearing plate. The plane size of the rubber bearing plate is matched with the length and width of the square groove on the top surface of the steel plate, and the thickness of the rubber bearing plate is about 5-10 mm. During construction, the rubber bearing plate is arranged in the groove on the top surface of the steel plate to form the support.
The joints of the two outer ends of the two longitudinal beams 1 and the support 5 are respectively provided with a limiting device A8 for limiting the transverse and vertical displacement of the beam body of the steel pad beam 12; the joints of the two ends of the inner sides of the two longitudinal beams 1 and the end cross beam 3 are respectively provided with a limiting device B9, and the limiting devices B9 are positioned on the two sides of the end cross beam 3 and used for limiting the transverse and longitudinal displacement of the beam body of the steel pad beam 12; the limiting device A8 and the limiting device B9 are both fixed on the track concrete supporting layer through a plurality of chemical anchor bolts 25.
Fig. 10a to 10b are schematic structural diagrams of a limiting device a, wherein the limiting device A8 is composed of a stop block 23, a pressing block 24 and a high-strength bolt 10, wherein the stop block 23 and the pressing block 24 are both formed by welding steel plates and are in an angle steel shape; the horizontal steel plate of the stop block 23 is provided with a bolt hole, the limiting device A8 is fixed on the track concrete supporting layer through a chemical anchor bolt 25, and the vertical steel plate of the stop block 23 is attached to the side surface of the lower flange plate of the longitudinal beam 1 and used for limiting the transverse displacement of the beam body of the steel pad beam 12; the vertical steel plate of the stop block 23 is provided with a long round hole, the vertical steel plate of the press block 24 is provided with a round hole, the press block 24 is connected with the vertical steel plate of the stop block 23 through the high-strength bolt 10, and the horizontal steel plate of the press block 24 is attached to the top surface of the lower flange plate of the longitudinal beam 1 and used for limiting the vertical displacement of the beam body of the steel pad beam 12 and preventing the beam body from jumping in the vertical direction due to high-speed driving. Fig. 10c is a schematic view of the structure of the stop device a after installation.
11 a-11 c show a schematic structural diagram of a limiting device B, wherein the limiting device B9 is formed by welding a horizontal steel plate and three vertical steel plates, and the top view of the limiting device B is U-shaped; the horizontal steel plate is provided with bolt holes, the limiting device B9 is fixed on the track concrete supporting layer through a chemical anchor bolt 25, the middle vertical steel plate is attached to the side face of the lower flange plate of the longitudinal beam 1 and used for limiting the transverse movement of the beam body of the steel pad beam 12, the vertical steel plate on one side is attached to the side face of the end cross beam 3 and used for limiting the longitudinal movement of the beam body, and the top view of the limiting device B after installation is shown in figure 11 d.
Example 2
When a high-speed rail ballastless track line is damaged in the connection range of the two track plates 11, the two track plates 11 are simultaneously dismantled, the steel pad beam 12 is erected above a damaged area, and transition section supports 13 with corresponding lengths are arranged between the two ends of the beam body of the steel pad beam 12 and the normal track plates 11, as shown in fig. 2. And a gap is reserved between the transition section support 13 and the steel pad beam.
The steel backing beam in this example is identical in structure to the steel backing beam in example 1.
The transition section support 13 includes a steel member a15, concrete ties 17, and fasteners 6. Concrete sleeper 17's both ends are respectively through the bolt fastening have steel member A15, steel member A15 includes the roof and is located two vertical webs, two vertical connecting plates of roof below, be steel member A structure sketch map as figure 7a ~ 7c, vertical connecting plate with vertical web is perpendicular and crossing the setting, steel member A15 is located two rail 4 under, steel member A15's roof is equipped with fastener anchor bolt hole 20, locks rail 4 and steel member A15 through fastener 6, steel member A15's bottom is fixed on the track concrete supporting layer.
6 a-6 b are schematic illustrations of a transition support structure with each steel member A15 connecting the ends of two concrete ties 17; the connection between the steel members a15 is achieved through the steel member B16. According to the length requirement of the transition section during construction, different numbers of steel members A, steel members B and concrete sleepers are connected by bolts according to the form shown in figures 6 a-6B to form the transition section supports with different lengths. Fig. 8a to 8c are schematic structural diagrams of a steel member B, and the steel member B16 also comprises a top plate, two vertical webs and two vertical connecting plates, wherein the two vertical webs are located below the top plate, the vertical connecting plates are perpendicular to and intersect with the vertical webs, and the two vertical webs are located between the two vertical connecting plates. All be equipped with the first connecting bolt hole 18 that is used for the roof to connect on the roof of steel member A15 and steel member B16, and steel member A15 and steel member B16's roof all is the H type, and the roof bilateral symmetry leaves the vacancy, the construction of the vertical connecting plate department of being convenient for. And the vertical connecting plates of the steel member A15 and the steel member B16 are respectively provided with a second connecting bolt hole 19 for connecting the concrete sleeper 17.
Limiting devices C14 are arranged at the two ends of the transition section support 13 and on the outer sides of the two ends of the concrete sleeper 17 and used for limiting the transverse displacement of the transition section support 13; the intermediate position of the first or second concrete tie 17 at the end of the transition section support 13 is also provided with a limiting device C14 for limiting the longitudinal displacement of the transition section support 13.
12 a-12C are schematic structural views of a limiting device C, wherein the limiting device C14 is formed by welding steel plates and is of an angle steel type, bolt holes are formed in a horizontal steel plate, and the limiting device C14 is fixed on a track concrete supporting layer through chemical anchor bolts 25; the vertical steel plates abut the outside of the ends of concrete ties 17 or the sides of the center of concrete ties 17.
Example 3
When only one track slab in the ballastless track line of the high-speed rail is damaged, the track slab is only required to be dismantled, and the temporary line can be erected by adopting the steel pad beam, the support, the limiting device and the fastener. The method for erecting the temporary line by adopting the overhead device comprises the following steps:
1) cutting the steel rail above the damaged rail plate by using a rail cutting machine, respectively extending breakpoints at two ends of the steel rail out of the rail plate end by 3-5 m along the longitudinal direction of the rail, and temporarily removing the steel rail;
2) chiseling wide and narrow joints at two ends of the track slab, releasing the prestress of the track slab, and removing the track slab by using a jack, a lifting appliance and lifting equipment;
3) using a chiseling instrument to chisel a mortar bonding layer on a supporting layer to ensure that the surface of the exposed supporting layer is smooth, cleaning the surface of the supporting layer, marking the position of a support by using ink lines in a cross shape on the cleaned surface of the supporting layer, and marking the end position of a steel pad beam by using a straight line;
4) according to the plane size of a support steel plate, chiseling a rectangular groove with the depth of about 15mm on the surface of a support layer at the mounting position of a support, paving an asbestos pad with the thickness of about 2mm in the groove, placing the support steel plate on the asbestos pad, and then mounting a rubber pressure-bearing plate in the groove on the support steel plate;
5) hoisting the steel pad beam on the support by using hoisting equipment, and adjusting the shape and position of the beam body to ensure that the longitudinal central line of the steel pad beam is superposed with the central line of the track, and the end of the beam is superposed with the end marking line;
6) a limiting device A is arranged at a support at the outer side of the longitudinal beam, and a limiting device B is arranged at a cross beam at the inner side end of the longitudinal beam;
7) moving the cut steel rail back to the rail again to be installed on a fastener on the upper part of the steel pad beam, connecting two ends of the steel rail with the steel rail of the normal line through clamping plates, and accurately adjusting the geometric linear shape of the rail to meet the requirements of safety and stability of the train, so that the construction of the temporary overhead line is completed;
8) after accomplishing interim overhead line, can manage the restoration to the disease in steel backing beam span within range, after the disease restoration is accomplished, remove interim rail and interim overhead device, lay the track board again, the recovery circuit can.
Example 4
The utility model provides an adopt the interim built on stilts device of high-speed railway ballastless track circuit to erect interim circuit suitable for high-speed driving, when the disease takes place in the scope that two track boards are connected, demolish these two track boards simultaneously, erect the steel pad roof beam in disease district top, set up the changeover portion support between steel pad roof beam body both ends and normal track board, specifically include following step:
1) cutting the steel rails above the two damaged rail plates by using a rail cutting machine, respectively extending the breakpoints at the two ends of the steel rails out of the ends of the rail plates by 3-5 m along the longitudinal direction of the rails, and removing the cut steel rails;
2) chiseling wide and narrow joints at two ends of the track slab, releasing the prestress of the track slab, and removing the two track slabs by using a jack, a lifting appliance and lifting equipment;
3) chiseling a mortar bonding layer on a track concrete supporting layer by using a chiseling instrument to ensure that the surface of the exposed supporting layer is smooth, cleaning the surface of the supporting layer, marking the position of a support and the positions of concrete sleepers at two ends of a transition section by using ink lines in a cross shape on the surface of the cleaned supporting layer, and marking the end position of a steel pad beam by using a straight line;
4) installing a support, hoisting a steel pad beam on the support by using hoisting equipment, and adjusting the shape and position of the steel pad beam body to ensure that the longitudinal central line of the steel pad beam is superposed with the central line of the track and the beam end is superposed with the end marking line; a limiting device A is arranged at a support at the outer side of the longitudinal beam, and a limiting device B is arranged at a cross beam at the inner side end of the longitudinal beam;
5) hoisting the transition section support on the transition section bearing layer by using hoisting equipment, and adjusting the shape and position of the transition section support to ensure that the longitudinal center line of the transition section support coincides with the center line of the track, and the marking line on the concrete sleeper at the end part coincides with the marking line on the bearing layer;
6) limiting devices C are arranged at the end parts of the sleepers at the two ends of the transition section support to limit the transverse movement of the transition section support, and limiting devices C are arranged at the middle positions of the transition section support, close to the first or second sleeper at the end part, to limit the longitudinal movement of the transition section;
7) moving the cut steel rail back to the rail again to be installed on fasteners on the upper portions of the steel pad beam and the transition section support, connecting two ends of the cut steel rail with the normal line steel rail through clamping plates, and accurately adjusting the geometric line shape of the rail to meet the requirements of safety and stability of a train, so that construction of a temporary overhead line is completed;
8) after finishing the temporary overhead line, the defects are repaired within the span range of the steel backing beam, after the defects are repaired, the temporary steel rail and the temporary overhead device are removed, the track slab is paved again, and the line is recovered.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A temporary overhead device of a ballastless track line of a high-speed rail suitable for high-speed traveling is characterized in that,
when a ballastless track of a high-speed rail is damaged only in the range of a certain track plate, the temporary line overhead device comprises a steel pad beam (12), a support (5), a limiting device and a fastener (6), wherein one hole steel pad beam (12) is replaced by a II-type track plate (11); the steel pad beam (12) consists of two longitudinal beams (1), an end cross beam (3) and a middle cross beam (2), wherein the end cross beam (3) and the middle cross beam (2) are positioned between the two longitudinal beams (1), the two longitudinal beams (1) are respectively positioned under two steel rails (4), and the end cross beam (3) and the middle cross beam (2) are respectively perpendicular to the longitudinal beams (1); the top of the longitudinal beam (1) is provided with a plurality of fasteners (6) for locking the steel rail (4) and the longitudinal beam (1); the bottoms of the two ends of the two longitudinal beams (1) are supported on a track concrete supporting layer through a support (5);
the longitudinal beam (1) is a box-shaped beam and comprises an upper flange plate, a lower flange plate, a web plate and stiffening plates (7) arranged among the upper flange plate, the lower flange plate and the web plate; the sections of the upper flange plate and the lower flange plate of the longitudinal beam (1) are wide in the middle and narrow at two ends along the longitudinal direction, and the sections of the two webs are kept unchanged; the inner side and the outer side of the end parts of the two longitudinal beams (1) are respectively provided with a limiting device;
the end cross beam (3) and the middle cross beam (2) are welded by steel plates; two ends of the end cross beam (3) are respectively and horizontally connected with stiffening plates (7) on the longitudinal beam (1) through high-strength bolts (10) at two ends of the longitudinal beam (1); in the middle of the longitudinal beam, two ends of the middle cross beam (2) are respectively and vertically connected with stiffening plates (7) on the longitudinal beam (1) through high-strength bolts (10), wherein the stiffening plates (7) connected with the end cross beams (3) on the longitudinal beam (1) are horizontally arranged, and the other stiffening plates (7) are vertically arranged;
the connecting parts of the two outer ends of the two longitudinal beams (1) and the support (5) are respectively provided with a limiting device A (8) for limiting the transverse displacement and the vertical displacement of the beam body of the steel pad beam (12); the connecting parts of the two ends of the inner sides of the two longitudinal beams (1) and the end cross beam (3) are respectively provided with a limiting device B (9), and the limiting devices B (9) are positioned on the two sides of the end cross beam (3) and used for limiting the transverse and longitudinal displacement of the beam body of the steel pad beam (12); when the ballastless track of the high-speed rail is damaged in the connecting range of the two track plates (11), the method is characterized in that the two track plates (11) are simultaneously dismantled, the steel pad beam (12) is erected above a damaged area, and transition section supports (13) with corresponding lengths are arranged between the two ends of the beam body of the steel pad beam (12) and the normal track plates (11);
the transition section support (13) comprises a steel member A (15), a concrete sleeper (17) and a fastener (6); the both ends of concrete sleeper (17) are respectively through bolt fastening has steel member A (15), steel member A (15) include the roof and are located two vertical webs, two vertical connecting plates of roof below, vertical connecting plate with vertical web is perpendicular and crossing the setting, steel member A (15) are located under two rail (4), the roof of steel member A (15) is equipped with fastener anchor bolt hole (20), locks rail (4) and steel member A (15) through fastener (6), the bottom of steel member A (15) is fixed on track concrete supporting layer.
2. The high-speed rail ballastless track line temporary overhead device of claim 1, wherein each steel member a (15) connects the ends of two concrete sleepers (17); the connection between the steel components A (15) is realized through a steel component B (16); the steel member B (16) also comprises a top plate, two vertical webs and two vertical connecting plates, wherein the two vertical webs and the two vertical connecting plates are positioned below the top plate, the vertical connecting plates are perpendicular to the vertical webs and are arranged in an intersecting mode, and first connecting bolt holes (18) for connecting the top plates are formed in the top plates of the steel member A (15) and the steel member B (16); and vertical connecting plates of the steel member A (15) and the steel member B (16) are respectively provided with a second connecting bolt hole (19) for connecting the concrete sleeper (17).
3. The temporary overhead device for the ballastless track line of the high-speed train according to claim 1, wherein the limiting device A (8) and the limiting device B (9) are fixed on the track concrete supporting layer through a plurality of chemical anchor bolts (25).
4. The temporary overhead device for the ballastless track line of the high-speed railway applicable to high-speed traveling is characterized in that limiting devices C (14) are arranged at two ends of the transition section support (13) and outside two ends of the concrete sleeper (17) and used for limiting the transverse displacement of the transition section support (13); a limiting device C (14) is also arranged in the middle of the first concrete sleeper (17) or the second concrete sleeper (17) at the end part of the transition section support (13) and is used for limiting the longitudinal displacement of the transition section support (13).
5. The temporary overhead device for the ballastless track line of the high-speed rail applicable to high-speed traveling is characterized in that the limiting device A (8) consists of a stop block (23), a pressing block (24) and a high-strength bolt (10), wherein the stop block (23) and the pressing block (24) are both formed by welding steel plates and are in an angle steel shape; the horizontal steel plate of the stop block (23) is provided with a bolt hole, the limiting device A (8) is fixed on the track concrete supporting layer through a chemical anchor bolt (25), and the vertical steel plate of the stop block (23) is attached to the side face of the lower flange plate of the longitudinal beam (1) and used for limiting the transverse displacement of the beam body of the steel pad beam (12); the steel plate of the stop block (23) is provided with a long round hole, the pressing block (24) is provided with a round hole, the pressing block (24) is connected with the vertical steel plate of the stop block (23) through the high-strength bolt (10), and the horizontal steel plate of the pressing block (24) is attached to the top surface of the lower flange plate of the longitudinal beam (1) and used for limiting the vertical displacement of the beam body of the steel pad beam (12).
6. The temporary overhead device for the ballastless track line of the high-speed rail applicable to high-speed traveling is characterized in that the limiting device B (9) is formed by welding a horizontal steel plate and three vertical steel plates, and the top view of the limiting device B is U-shaped; be provided with the bolt hole on the horizontal steel sheet, fix stop device B (9) on track concrete supporting layer through chemical crab-bolt (25), the laminating of middle vertical steel sheet and longeron (1) lower limb flange side for the side of restriction steel pad roof beam (12) roof beam body lateral shifting, the laminating of the vertical steel sheet of one side and the side of end crossbeam (3) is used for restricting roof beam body longitudinal movement.
7. The temporary overhead device for the ballastless track line of the high-speed train according to claim 4, wherein the limiting device C (14) is welded by steel plates and is of an angle steel type, bolt holes are arranged on horizontal steel plates, and the limiting device C (14) is fixed on a track concrete supporting layer through chemical anchor bolts (25); the vertical steel plate is abutted against the outer side of the end part of the concrete sleeper (17) or the side surface of the middle position of the concrete sleeper (17).
8. The method for erecting the temporary line by using the temporary overhead device for the ballastless track line of the high-speed rail suitable for high-speed driving according to claim 1, when only one track plate area in the ballastless track of the high-speed rail is damaged, is characterized by comprising the following steps:
1) cutting the steel rail above the damaged rail plate by using a rail cutting machine, respectively extending the breakpoints at two ends of the steel rail out of the rail plate end by 3-5 m along the longitudinal direction of the rail, and removing the cut steel rail;
2) chiseling wide and narrow joints at two ends of a track slab, releasing the prestress of the track slab, and removing the track slab by using a jack, a lifting appliance and lifting equipment;
3) chiseling a mortar bonding layer on a track concrete supporting layer by using a chiseling instrument to ensure that the surface of the exposed supporting layer is smooth, cleaning the surface of the supporting layer, marking the position of a support by using an ink line in a cross shape on the cleaned surface of the supporting layer, and marking the end position of a steel pad beam by using a straight line;
4) according to the plane size of the support steel plate, chiseling a groove on the surface of a support layer at the mounting position of the support, paving a layer of asbestos pad in the groove, placing the support steel plate on the asbestos pad, and then mounting the rubber bearing plate in the groove on the support steel plate;
5) hoisting the steel pad beam on the support by using hoisting equipment, and adjusting the shape and position of the beam body to ensure that the longitudinal central line of the steel pad beam is superposed with the central line of the track, and the end of the beam is superposed with the end marking line;
6) a limiting device A is arranged at a support at the outer side of the longitudinal beam, and a limiting device B is arranged at a cross beam at the inner side end of the longitudinal beam;
7) moving the cut steel rail back to the rail again to be installed on a fastener on the upper part of the steel pad beam, connecting two ends of the cut steel rail with the steel rail of the normal line through clamping plates, and accurately adjusting the geometric linear shape of the rail to meet the requirements of safety and stability of the train, so that the construction of the temporary overhead line is completed;
8) after finishing the temporary overhead line, the defects are repaired within the span range of the steel backing beam, after the defects are repaired, the temporary steel rail and the temporary overhead device are removed, the track slab is paved again, and the line is recovered.
9. The method for erecting the temporary line by using the temporary overhead device for the ballastless track line of the high-speed rail suitable for high-speed traveling according to claim 1, when the ballastless track damage of the high-speed rail occurs in the connection range of two track plates, the two track plates are removed simultaneously, the steel pad beam is erected above a damaged area, and transition section supports are arranged between the two ends of the steel pad beam body and normal track plates, and the method is characterized by comprising the following steps:
1) cutting the steel rails above the two damaged rail plates by using a rail cutting machine, respectively extending the breakpoints at the two ends of the steel rails out of the ends of the rail plates by 3-5 m along the longitudinal direction of the rails, and removing the cut steel rails;
2) chiseling wide and narrow joints at two ends of the track slab, releasing the prestress of the track slab, and removing the two track slabs by using a jack, a lifting appliance and lifting equipment;
3) chiseling a mortar bonding layer on a track concrete supporting layer by using a chiseling instrument to ensure that the surface of the exposed supporting layer is smooth, cleaning the surface of the supporting layer, marking the position of a support and the positions of concrete sleepers at two ends of a transition section by using ink lines in a cross shape on the surface of the cleaned supporting layer, and marking the end position of a steel pad beam by using a straight line;
4) installing a support, hoisting a steel pad beam on the support by using hoisting equipment, and adjusting the shape and position of the steel pad beam body to ensure that the longitudinal central line of the steel pad beam is superposed with the central line of the track and the beam end is superposed with the end marking line; a limiting device A is arranged at a support at the outer side of the longitudinal beam, and a limiting device B is arranged at a cross beam at the inner side end of the longitudinal beam;
5) hoisting the transition section support on the transition section bearing layer by using hoisting equipment, and adjusting the shape and position of the transition section support to ensure that the longitudinal center line of the transition section support coincides with the center line of the track, and the marking line on the concrete sleeper at the end part coincides with the marking line on the bearing layer;
6) limiting devices C are arranged at the end parts of the sleepers at the two ends of the transition section support to limit the transverse movement of the transition section support, and limiting devices C are arranged at the middle positions of the transition section support, close to the first or second sleeper at the end part, to limit the longitudinal movement of the transition section;
7) moving the cut steel rail back to the rail again to be installed on fasteners on the upper portions of the steel pad beam and the transition section support, connecting two ends of the cut steel rail with the normal line steel rail through clamping plates, and accurately adjusting the geometric line shape of the rail to meet the requirements of safety and stability of a train, so that construction of a temporary overhead line is completed;
8) after finishing the temporary overhead line, the defects are repaired within the span range of the steel backing beam, after the defects are repaired, the temporary steel rail and the temporary overhead device are removed, the track slab is paved again, and the line is recovered.
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| FR3002555B1 (en) * | 2013-02-22 | 2015-08-07 | Sncf | DEVICE FOR ADAPTIVE SUPPORT OF A RAILWAY RAIL |
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