CN212426585U - Embankment structure combining ballastless track and highway - Google Patents

Abstract

The utility model belongs to the technical field of tramcar roadbed engineering, in particular to a embankment structure combining ballastless tracks and highways, which comprises a tramway, wherein both sides of the tramway are respectively provided with a motor vehicle lane, and an isolator is arranged between the tramway and the motor vehicle lane; the rail tramway comprises a roadbed structure, the upper end of the roadbed structure is provided with a track structure, and pipeline equipment is arranged in the roadbed structure, so that the problems that the running speed of the tramway and the design structure of a tramway reference high-speed railway ballastless track of the tramway are influenced by the mixed staggered arrangement of the existing urban rail tramway and a motor vehicle lane are solved.

Description

Embankment structure combining ballastless track and highway

Technical Field

The utility model belongs to the technical field of tram road bed engineering, especially, relate to a embankment structure that ballastless track and highway combine.

Background

Because the tramcar has the advantages of low construction cost, high safety coefficient, high environmental protection coefficient, capability of being used together with vehicles such as automobiles and the like, more and more cities put the tramcar into an important urban development plan, and the operation mileage of the tramcar in China reaches 328.7 kilometers after 2018, however, the current specification still has no relevant provisions of the structure of the embankment between the ballastless track tramcar and the matched highway parallel independent right of way interval, the existing urban tramcar lanes and the motor vehicle lanes are arranged in a mixed and staggered way, in order to reduce traffic safety accidents, the operation speed of the tramcar is lower, the existing design of the tramcar track with reference to the ballastless track of the high-speed railway has a complex structure and will cause waste of engineering, therefore, an embankment structure which can improve the operation speed of the ballastless track tramcar and can improve the simple structure of the tramcar track by enabling the ballastless track tramcar to be parallel to a matched highway is urgently needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: aiming at the problems that the running speed of a tramcar and the design structure of a ballastless track of a tramcar track reference high-speed railway are complex due to the mixed staggered arrangement of the existing urban tramway and the motor way, a embankment structure combining the ballastless track and a road is provided.

In order to realize the purpose, the utility model discloses a technical scheme be:

a embankment structure combining a ballastless track and a highway comprises a track tramway, wherein motor vehicle lanes are respectively arranged on two sides of the track tramway, and an isolator is arranged between the track tramway and the motor vehicle lanes; the tramway comprises a roadbed structure, wherein a track structure is arranged at the upper end of the roadbed structure, and pipeline equipment is arranged in the roadbed structure.

Motor vehicle lanes are respectively arranged on two sides of the rail vehicle lane, and isolating bodies are arranged between the rail vehicle lane and the motor vehicle lane, the isolating bodies are separating structural bodies formed by stone stacking, the rail tramway and the motor vehicle way are arranged independently in parallel by the separation of the separators, the mixed staggered arrangement of the rail tramway and the motor vehicle way is avoided, the operation speed of the tramcar is improved, the rail tramway comprises a roadbed structure, the upper end of the roadbed structure is provided with a track structure, the tramcar is arranged on the track structure, the track structure is supported by the roadbed structure, pipeline equipment is buried underground in the roadbed structure, and power is provided for the tramcar through threading the cable in the pipeline equipment, so that the operation requirement of the tramcar is met, and the problems that the running speed of the tramcar and the design structure of a ballastless track of a tramcar track reference high-speed railway are influenced by the mixed staggered arrangement of the existing urban tramcar lane and a motorway are solved.

Preferably, the roadbed structure comprises a roadbed body, a foundation bed bottom layer and a foundation bed surface layer, wherein the roadbed body, the foundation bed bottom layer and the foundation bed surface layer are arranged from bottom to top in a layered manner; the filling material layers of the roadbed body and the foundation bed bottom layer are mixed material layers of sand soil and fine gravel soil or mixed material layers of crushed stone and coarse gravel soil, and the filling material layer of the foundation bed surface layer is a mixed material layer of crushed stone and cement mixed with 5-6% by mass of cement.

Preferably, the grain size of the roadbed bulk mixture is not more than 75 mm; the particle size of the mixture of the foundation bed bottom layer is not more than 60mm, and the paving thickness of the foundation bed bottom layer is 0.5-0.7 m; the thickness of laying on bed top layer is 0.3~0.5m, and more conventional reference high-speed railway track design has satisfied tram and has satisfied the requirement to road matrix structural strength, has reduced the whole thickness of laying of road bed body, has reduced the waste of engineering.

Preferably, the track structure includes base, track board and track, the base sets up in the upper end on bed top layer, the track board sets up in the upper end of base, the track passes through the sleeper to be installed in the upper end of track board.

Preferably, the isolator includes flat kerbstone and found kerbstone, flat kerbstone sets up in the upper end on bedding top layer, found the kerbstone and set up in flat kerbstone's upper end, set up flat kerbstone in the upper end on bedding top layer as the basis of isolator, can provide great bearing capacity and bending resistance for the vertical kerbstone of flat kerbstone upper end, improve the bulk strength of isolator.

Preferably, two opposite inclined planes are arranged on the surface of the track plate, and the height of each inclined plane is gradually reduced from the center of the track plate to one side; the pavement of the motor way is an inclined plane, the inclined plane gradually decreases towards the direction far away from the tramway, opposite inclined planes are arranged on the track plate, and each inclined plane gradually decreases from the center of the track plate to one side, so that the effect of draining water in time is achieved, and the phenomenon that accumulated water on the track plate influences the running of the tramway on the track can be avoided; the road surface of motor vehicle lane is the inclined plane, and the inclined plane reduces towards keeping away from the direction of rail tramway gradually, can avoid motor vehicle lane ponding, influences the motor vehicle operation.

Preferably, the packing layer has been laid between track structure and the isolator, first planting backfill layer has been laid to the packing layer upper end, the plant layer has been laid to the upper end on first planting backfill layer, and the packing layer has the effect of shake reduction, can effectively reduce the vibrations of tram operation, and first planting backfill layer and the cooperation of plant layer can absorb the rainwater, reduce ponding between track structure and the isolator.

Preferably, a drainage cushion is arranged in the first planting backfill layer, a drainage pipe is arranged in a position, protruding out of the motor vehicle lane road surface, of the vertical kerbstone, one end of the drainage cushion is connected with the inclined surface of the track plate, the other end of the drainage cushion is connected with the drainage pipe, rainwater enters the drainage cushion along the inclined surface of the track plate and then enters the drainage pipe through the drainage cushion, and the drainage pipe is arranged in a position, protruding out of the motor vehicle lane road surface, of the vertical kerbstone, so that rainwater in the motor vehicle lane is drained into the motor vehicle lane through the drainage pipe, and the phenomenon that rainwater in a matrix structure is accumulated to influence the running of an electric.

Preferably, foundation bed top layer upper end is equipped with two at least track structures, and is adjacent laid the second between the track structure and planted the backfill layer, the plant layer has been laid to the upper end that the backfill layer was planted to the second, and the second is planted the water absorption function that backfill layer and plant layer cooperation formed, and ponding between two reducible track structures avoids the rainwater deposit, influences the tram operation.

Preferably, the assembly type blind ditch is arranged at the upper end of the surface layer of the foundation bed and is located between two adjacent track structures and buried in the second planting backfill layer, so that water between the two track structures can be discharged in time, and influence on rainwater accumulation on operation of the electric vehicle is avoided.

Compared with the prior art, the utility model has the advantages of: the application is that motor vehicle lanes are respectively arranged at two sides of the rail electric vehicle lane, and the isolating bodies are arranged between the rail electric vehicle lane and the motor vehicle lane, the isolating bodies are of stone stacking structures, the rail tramway and the motor vehicle way are arranged independently in parallel by the separation of the separators, the mixed staggered arrangement of the rail tramway and the motor vehicle way is avoided, the operation speed of the tramcar is improved, the rail tramway comprises a roadbed structure, the upper end of the roadbed structure is provided with a track structure, the tramcar is arranged on the track structure, the track structure is supported by the roadbed structure, pipeline equipment is buried underground in the roadbed structure, and power is provided for the tramcar through threading the cable in the pipeline equipment, so that the operation requirement of the tramcar is met, and the problems that the running speed of the tramcar and the design structure of a ballastless track of a tramcar track reference high-speed railway are influenced by the mixed staggered arrangement of the existing urban tramcar lane and a motorway are solved.

Other beneficial effects of this application are:

1. the filling materials of the roadbed body and the bottom layer of the foundation bed are both selected from a mixture of sand soil and fine gravel soil or a mixture of crushed stone and coarse gravel soil, the filling material of the surface layer of the foundation bed is selected from a mixture of crushed stone and 5% cement, and the grain size of the filling material of the roadbed body is not more than 75 mm; the particle size of the filling material of the bottom layer of the foundation bed is not more than 60mm, and the laying thickness of the bottom layer of the foundation bed is 0.5-0.7 m; the foundation bed top layer is selected for use the rubble and is mixed 5% cement and fill, just the thickness of laying on foundation bed top layer is 0.3~0.5m, and more conventional reference high-speed railway track design has satisfied tramcar and has satisfied the requirement to road matrix structure intensity, has reduced the whole thickness of laying of road bed body, has reduced the waste of engineering.

2. Set up the flat kerb in the basis of the upper end on bedbed top layer as the isolator, can provide great bearing capacity and bending resistance for founding the kerb, improve the bulk strength of isolator.

3. The track plate is provided with opposite inclined planes, and each inclined plane is gradually reduced from the center of the track plate to one side, so that the track plate has a function of draining water in time, and the influence of accumulated water on the track plate on the running of the tramcar on the track can be avoided; the road surface of motor vehicle lane is the inclined plane, and the inclined plane reduces towards keeping away from the direction of rail tramway gradually, can avoid motor vehicle lane ponding, influences the motor vehicle operation.

4. The packing layer has the effect of shake reduction, can effectively reduce the vibrations of tram operation, and the rainwater can be received in first planting backfill layer and the cooperation of plant layer, reduces the ponding between track structure and the isolator.

5. Rainwater enters the drainage pad along the inclined plane of the track plate and then enters the drainage pipe through the drainage pad, and the drainage pipe is arranged in the part of the vertical kerb protruding out of the road surface of the motor vehicle lane, so that the rainwater in the tramway is drained into the motor vehicle lane through the drainage pipe, and the phenomenon that the tramway runs due to the accumulation of the rainwater in the matrix structure is avoided.

6. The water absorption function that backfill layer and plant layer cooperation formed is planted to the second, and the ponding between two reducible track structures avoids the rainwater deposit, influences the tram operation.

7. The assembly type blind ditch is arranged at the upper end of the surface layer of the foundation bed and located between the two track structures and buried in the second planting backfill layer, so that water between the two track structures can be discharged in time, and influence on rainwater accumulation on operation of the electric car is avoided.

Drawings

Fig. 1 is a schematic structural view of an embankment structure of the ballastless track and highway combination of the present invention;

FIG. 2 is a schematic structural view of the ballastless track of the utility model and a supporting road;

fig. 3 is a schematic view of the structure of an enlarged track structure.

Reference numerals

1-embankment side slope, 2-sidewalk, 3-green belt, 4-non-motor vehicle lane, 5-motor vehicle lane, 6-rail vehicle lane, 61-road foundation structure, 611-road foundation body, 612-foundation bed bottom layer, 613-foundation bed surface layer, 62-rail structure, 621-base, 622-rail plate, 623-rail, 624-sleeper, 63-pipeline equipment, 631-high-voltage buried pipe, 632-dynamic-lighting buried pipe, 633-low-voltage-current buried pipe, 7-isolator, 71-vertical kerbstone, 72-flat kerbstone, 8-filler layer, 9-first planting backfill layer, 10-plant layer, 11-drainage mat, 12-drainage pipe, 13-second planting backfill layer, 14-assembled blind ditch and 15-tramcar.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Example 1

As shown in the attached drawings 1, 2 and 3, the embankment structure combining ballastless tracks and highways of the embodiment is characterized in that motor vehicle lanes 5 are respectively arranged on two sides of a track electric vehicle lane 6, a matching road comprises a non-motor vehicle lane 4, a green belt 3, a sidewalk 2 and an embankment side slope 1 which are sequentially arranged on the outer side of each motor vehicle lane 5, wherein the sidewalk 2, the green belt 3, the non-motor vehicle lane 4 and the motor vehicle lane 5 are designed according to municipal road design requirements, the embankment side slope 1 adopts protective measures according to urban landscape design requirements, a herringbone framework cut-off protection slope or a square framework cut-off protection slope is adopted, an isolator 7 is respectively arranged between the track electric vehicle lane 6 and the motor vehicle lane 5, the isolator 7 is of a stone stacking structure, parallel independent arrangement of the track electric vehicle lane 6 and the motor vehicle lane 5 is realized through isolation of the isolator 7, and mixed staggered arrangement of the track, the operation speed of tram is improved, tram 6 includes road bed body structure 61, the upper end of road bed body structure 61 is equipped with track structure 62, tram arranges in on the track structure, support track structure through road bed body structure, pipeline equipment has been buried underground in road bed body structure, through wear the heavy current buried pipe in pipeline equipment, weak spot buried pipe and dynamic illumination buried pipe provide power for tram 15, tram 15's operation requirement has been satisfied, current city tram 6 and the mixed crisscross setting in motorway 5 have been solved, influence tram 15's operating speed and solved the complicated problem of tram 6 reference high speed railway ballastless track design structure.

The grain size of the roadbed body 611 filling is not more than 75mm, when the roadbed body 611 selects a mixture of sand soil and gravel soil as the filling, the roadbed body 611 controls the compaction standard, the compaction coefficient K is not less than 0.92, the foundation coefficient K30(MPa/m) is not less than 110, when the roadbed body 611 selects a mixture of crushed stone and coarse gravel soil as the filling, the roadbed body 611 controls the compaction standard, the compaction coefficient K is not less than 0.92, and the foundation coefficient K30(MPa/m) is not less than 130; the particle size of the filling material of the foundation bed bottom layer 612 is not more than 60mm, the laying thickness of the foundation bed bottom layer 612 is 0.5-0.7 m, when the foundation bed bottom layer 612 uses the mixture of sand soil and gravel soil as the filling material, the control compaction standard of the foundation bed bottom layer 612 is provided, the compaction coefficient K is not less than 0.95, the foundation coefficient K30(MPa/m) is not less than 150, when the foundation bed bottom layer 612 selects the mixture of gravel soil and coarse gravel soil as the filling material, the control compaction standard of the foundation bed bottom layer 612 is provided, the compaction coefficient K is not less than 0.92, and the foundation coefficient K30(MPa/m) is not less than 150; the foundation bed surface layer 613 is filled by mixing crushed stone and 5% of cement, the paving thickness of the foundation bed surface layer 613 is 0.3-0.5 m, the compaction standard of the foundation bed surface layer 613 is controlled, the compaction coefficient K is not less than 0.97, the foundation coefficient K30(MPa/m) is not less than 190, the dynamic deformation modulus Evd (MPa) is not less than 55, and compared with the conventional design of a reference high-speed railway track, the requirement of a tramcar on the structural strength of a road base body is met, the integral paving thickness of the road base body is reduced, and the engineering waste is reduced.

The insulator 7 includes flat kerbstone 72 and found kerbstone 71, and flat kerbstone 72 sets up in the upper end of bed top layer 613, and found kerbstone 71 sets up in the upper end of flat kerbstone 72, sets up flat kerbstone 72 in the upper end of bed top layer 613 as the basis of insulator 7, can provide great bearing capacity and bending resistance for standing kerbstone 71, improves the whole support intensity of insulator 7.

The track structure 62 comprises a base 621, a track plate 622 and a track 623, wherein the base 621 is arranged at the upper end of the surface layer 613 of the foundation bed, the track plate 622 is arranged at the upper end of the base 621, the track 623 is arranged at the upper end of the track plate 622 through a sleeper 624, opposite inclined planes are arranged on the track plate 622, each inclined plane is gradually reduced from the center of the track plate 622 to one side, the inclination angle of each inclined plane is 2-4 degrees, a timely drainage effect is achieved, and the phenomenon that accumulated water on the track plate 622 affects the running of the tramcar 15 on the track 623 can be avoided; the road surface of the motor vehicle lane 5 is an inclined surface, the inclined surface gradually decreases towards the direction away from the tramway 6, the inclination angle of the inclined surface is 1-2 degrees, and the influence on the motor vehicle running caused by water accumulation of the motor vehicle lane 5 can be avoided.

Lay packing layer 8 between track structure 62 and the isolator 7, first planting backfill layer 9 has been laid to packing layer 8 upper end, plant layer 10 has been laid to the upper end of first planting backfill layer 9, and packing layer 8 has the effect of shake reduction, can effectively reduce the vibrations of tram 15 operation, and first planting backfill layer 9 and the cooperation of plant layer 10 can absorb the rainwater, reduce the ponding between track structure 62 and the isolator 7.

Rainwater enters the drainage mat 11 along the inclined plane of the track plate 622 and then enters the drainage pipe 12 through the drainage mat 11, the drainage pipe 12 is arranged in the position where the vertical kerbs 71 protrude out of the road surface of the motor vehicle lane 5, so that the rainwater in the tramway 6 is drained into the motor vehicle lane 5 through the drainage pipe 12, the road surface of the motor vehicle lane 5 is an inclined plane, the rainwater is drained along the inclined plane, and the phenomenon that the accumulated water of the motor vehicle lane 5 and the tramway 6 affects the running of motor vehicles and tramways 15 is avoided.

Bed top layer 613 upper end is equipped with two at least track structures 62, and is adjacent laid the second between the track structure 62 and planted backfill layer 13, and plant layer 10 has been laid to the upper end that backfill layer 13 was planted to the second, and the cooperation of second planting backfill layer 13 and plant layer 10 forms absorbs water the function, and the ponding between two reducible track structures 62 avoids the rainwater deposit, influences tram 15 operation.

The upper end of the bed surface layer 613 is provided with an assembly type blind ditch 14, the assembly type blind ditch 14 is positioned between the two track structures 62 and is embedded in the second planting backfill layer 13, so that water between the two track structures 62 can be discharged in time, and the influence of rainwater accumulation on the operation of the tramcar 15 is avoided.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. The utility model provides a embankment structure that ballastless track and highway combine which characterized in that: the device comprises a rail electric vehicle lane (6), wherein motor vehicle lanes (5) are respectively arranged on two sides of the rail electric vehicle lane, and an isolator (7) is arranged between the rail electric vehicle lane (6) and the motor vehicle lanes (5); the tramway (6) comprises a roadbed structure (61), a track structure (62) is arranged at the upper end of the roadbed structure (61), and pipeline equipment (63) is arranged in the roadbed structure (61).

2. The embankment structure for the combination of the ballastless track and the road according to claim 1, wherein: the roadbed structure (61) comprises a roadbed body (611), a foundation bed bottom layer (612) and a foundation bed surface layer (613), wherein the roadbed body (611), the foundation bed bottom layer (612) and the foundation bed surface layer (613) are arranged in a layered mode from bottom to top; the filling material layers of the roadbed body (611) and the foundation bed bottom layer (612) are mixed material layers of sand soil and fine gravel soil or mixed material layers of gravel soil and coarse gravel soil, and the filling material layer of the foundation bed surface layer (613) is a mixed material layer of gravel and cement.

3. The embankment structure for the combination of the ballastless track and the road according to claim 2, wherein: the grain size of the roadbed body (611) mixture is not more than 75 mm; the particle size of the mixture of the foundation bed bottom layer (612) is not more than 60mm, and the paving thickness of the foundation bed bottom layer (612) is 0.5-0.7 m; the paving thickness of the surface layer (613) of the foundation bed is 0.3-0.5 m.

4. The embankment structure for the combination of the ballastless track and the road according to claim 1, wherein: the track structure (62) comprises a base (621), a track plate (622) and a track (623), wherein the base (621) is arranged at the upper end of the foundation bed surface layer (613), the track plate (622) is arranged at the upper end of the base (621), and the track (623) is arranged at the upper end of the track plate (622) through a sleeper (624).

5. The embankment structure for the combination of the ballastless track and the road according to claim 4, wherein: the insulator (7) comprises a flat kerbstone (71) and a vertical kerbstone (72), wherein the flat kerbstone (71) is arranged at the upper end of the bed surface layer (613), and the vertical kerbstone (72) is arranged at the upper end of the flat kerbstone (71).

6. The embankment structure for the combination of the ballastless track and the road according to claim 5, wherein: two opposite inclined planes are arranged on the surface of the track plate (622), and the height of each inclined plane is gradually reduced from the center of the track plate (622) to one side; the road surface of the motor vehicle lane (5) is an inclined surface, and the inclined surface gradually decreases towards the direction far away from the rail electric vehicle lane (6).

7. The embankment structure for the combination of the ballastless track and the road according to claim 6, wherein: a packing layer (8) is laid between the track structure (62) and the isolating body (7), a first planting backfill layer (9) is laid on the upper end of the packing layer (8), and a plant layer (10) is laid on the upper end of the first planting backfill layer (9).

8. The embankment structure for the combination of the ballastless track and the road according to claim 7, wherein: be equipped with drainage mat (11) in first planting backfill layer (9), be equipped with drain pipe (12) in the position of founding kerbstone (72) protrusion in motorway (5) road surface, the inclined plane of one end and track board (622) of drainage mat (11) meets, and the other end meets with drain pipe (12).

9. The embankment structure for the combination of the ballastless track and the road according to claim 2, wherein: at least two rail structures (62) are arranged at the upper end of the foundation bed surface layer (613), a second planting backfill layer (13) is laid between the adjacent rail structures (62), and a plant layer (10) is laid at the upper end of the second planting backfill layer (13).

10. The embankment structure for the combination of the ballastless track and the road according to claim 9, wherein: an assembly type blind ditch (14) is arranged at the upper end of the foundation bed surface layer (613), and the assembly type blind ditch (14) is located between two adjacent track structures (62) and is buried in the second planting backfill layer (13).

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