CN110029539B - High-speed magnetic levitation traffic longitudinal and transverse beam type steel-concrete combined structure track panel - Google Patents
High-speed magnetic levitation traffic longitudinal and transverse beam type steel-concrete combined structure track panel Download PDFInfo
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- CN110029539B CN110029539B CN201910233432.XA CN201910233432A CN110029539B CN 110029539 B CN110029539 B CN 110029539B CN 201910233432 A CN201910233432 A CN 201910233432A CN 110029539 B CN110029539 B CN 110029539B
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- 239000004567 concrete Substances 0.000 title claims abstract description 124
- 238000005339 levitation Methods 0.000 title claims abstract description 40
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 83
- 239000010959 steel Substances 0.000 claims abstract description 83
- 210000002435 tendon Anatomy 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 6
- 238000004873 anchoring Methods 0.000 claims description 5
- 238000013016 damping Methods 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 abstract description 6
- 238000010276 construction Methods 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 10
- 239000000725 suspension Substances 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 239000002131 composite material Substances 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008602 contraction Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Abstract
The invention discloses a high-speed magnetic levitation traffic longitudinal and transverse beam type steel-concrete combined structure rail panel, which comprises two longitudinal beams symmetrically arranged along a line direction and a plurality of cross beams perpendicular to the line direction and arranged between the longitudinal beams, wherein the longitudinal beams comprise a sliding top plate (8), a positioning steel plate (14) relatively flush with the sliding top plate (8) and a concrete longitudinal beam (6) arranged between the sliding top plate (8) and the positioning steel plate (14), the positioning steel plate (14) is embedded in the concrete longitudinal beam (6) through vertical opposite-pull steel bars, and the cross beams comprise concrete cross beams (4) and rail panel fixed steel members arranged on two sides of the concrete cross beams (4) in pairs. The track panel is of a steel-concrete combined structure, the track panel structure is of a longitudinal and transverse beam type structure, and when the track panel is installed, the track line shape and the elevation of the track can be accurately positioned and adjusted through the post-pouring track supporting table, and the elevation of the track panel can be conveniently adjusted through the fastener during operation and maintenance.
Description
Technical Field
The invention belongs to the technical field of magnetic levitation track traffic, and relates to a high-speed magnetic levitation traffic longitudinal and transverse beam type steel-concrete combined structure track panel according to body ground.
Background
The magnetic levitation transportation system is a novel ground passenger transportation system, and is obviously different from the traditional wheel-rail transportation system in that a vehicle body is levitated above a track by means of levitation force, and a walking part of the vehicle body is not contacted with the track. The propulsion force generated by the linear induction motor moves forward on the track. The suspension electromagnet electrified on the suspension frame of the constant-conduction high-speed magnetic levitation train and the long stator coil on the track are attracted to each other to provide levitation force for the train, so that the train is lifted upwards, and a stable levitation gap is ensured by controlling levitation exciting current. The suspension gap between the electromagnet and the rail is generally controlled to be 8-12 mm.
The electrified guide electromagnet on the suspension frame interacts with the guide plate on the side surface of the track to provide guide force, so that a certain lateral distance is kept between the vehicle body and the track, and the non-contact guide in the horizontal direction is realized. The high-speed magnetic levitation train is driven by an off-vehicle power device, namely a long stator Linear Synchronous Motor (LSM), a levitation electromagnet coil is arranged at the lower part of a vehicle levitation frame, a long stator coil is arranged on a track, and when the long stator coil arranged along the line direction provides three-phase frequency modulation and amplitude modulation electric power, the train is pushed to advance due to electromagnetic induction, so that the train is completely and non-contact traction and braking under the levitation state are realized.
At present, the common-guide high-speed magnetic levitation transportation adopts a track beam structure mode that a bridge and a track function piece are integrated into a whole, and the track function piece is arranged at two cantilever ends (as shown in figure 1) of a beam part structure top plate of the bridge to form a track beam. Patent document CN1715561a discloses a high-speed magnetic levitation superposition type track beam connecting mechanism, a track beam and a manufacturing method thereof, comprising a supporting steel beam and welding nails, wherein the connecting mechanism is provided with a reinforced cement grouting fixedly connecting part which is positioned at the middle part of a track plate and is used for processing the track plate and connecting with a bearing main beam into a whole, the supporting steel beam is H-shaped, the supporting steel beam is respectively buried at two ends of the track plate by the welding nails, and the supporting steel beam is supported between the track plate and the bearing main beam. In addition, there is also a structural form in which a sliding top plate, a magnetic guide plate and a stator core of a track function member are directly embedded in a concrete beam to form a track beam, but the structure system is a structural system in which the track function member and a bridge beam part structure are combined into one, and the following defects exist: (1) The rail functional part is arranged at the two cantilever end parts of the roof of the beam part structure of the bridge to form a structural form of the rail beam, the manufacturing precision requirements for the rail functional part and the bridge beam part structure are extremely high, the rail functional part is required to be subjected to finish machining, and the requirements for the prefabricated form, the concrete pouring quality, the maintenance of the prefabricated beam and the like of the bridge are all strict, so that the construction process of the rail beam is complex, and the prefabrication and erection cost is greatly increased. (2) During the installation of the track functional part, in order to achieve the design of the track surface elevation and the line shape, the track surface elevation needs to be adjusted by integrally adjusting the elevation of the whole track beam through a jack, and the track surface elevation adjustment process in the construction process is extremely complex. (3) During high-speed magnetic levitation traffic operation, after the rail surface changes due to sedimentation, concrete shrinkage, creep and the like, the rail surface elevation can be adjusted by the ribs through the support of the beam part structure, and no other method is needed to adjust the rail surface elevation. When the rail surface elevation is adjusted through the support, the whole rail beam is jacked up by adopting a jack and then rail surface height Cheng Diaozheng is carried out, so that time and labor are wasted, and linear maintenance of the rail is inconvenient.
Disclosure of Invention
Aiming at the defects or improvement demands of the prior art, the invention provides a high-speed magnetic levitation transportation longitudinal and transverse beam type steel-concrete combined structure rail panel, which is a steel-concrete combined structure, the rail panel structure is in a longitudinal and transverse beam type structure form, and the accurate positioning and adjustment of track alignment and elevation can be realized through a post-pouring rail bearing table when the rail panel is installed, and the elevation of the rail panel can also be conveniently adjusted through a fastener during operation and maintenance.
In order to achieve the above purpose, the invention provides a high-speed magnetic levitation traffic longitudinal and transverse beam type steel-concrete combined structure rail panel which is laid on a concrete beam and comprises two longitudinal beams symmetrically arranged along the line direction and a plurality of transverse beams perpendicular to the line direction and arranged between the longitudinal beams; wherein,
The longitudinal beam comprises a sliding top plate, a positioning steel plate which is arranged relatively flush with the sliding top plate, and a concrete longitudinal beam which is arranged between the sliding top plate and the positioning steel plate, and the positioning steel plate is embedded in the concrete longitudinal beam through vertical opposite-pull steel bars;
The beam comprises a concrete beam and rail panel fixing steel members arranged on two sides of the concrete beam in pairs, the concrete beam and the concrete longitudinal beam are integrally cast, and the rail panel fixing steel members and the fastener system are used for realizing fixed connection with the concrete beam and rail surface elevation adjustment.
Further, the track panel fixing steel member comprises a vertical steel plate, a stiffening steel plate and a base plate;
The base plate is vertically arranged with the concrete beam, and the vertical steel plate is arranged in parallel with the concrete beam and is attached to the concrete beam;
The stiffening steel plates are of triangular, circular arc, trapezoid or quadrilateral structures, and two side edges of the stiffening steel plates are welded with the base plates and the vertical steel plates respectively to jointly form the track panel fixing steel member.
Further, the rail panel fixing steel member comprises a shear pin, a through hole is formed in the vertical steel plate, and the shear pin penetrates through the through hole to realize the fixed connection of the rail panel fixing steel member and the concrete beam.
Further, a long round hole is formed in the base plate, the long axis direction of the long round hole is consistent with the direction of the concrete beam or the line, the short axis direction length of the long round hole is slightly larger than the diameter of an anchoring screw rod of the fastener system, and the long axis direction length of the long round hole is determined according to the maximum movement amount of the longitudinal and transverse beam type steel-concrete combined structure rail panel on the concrete beam.
Further, transverse prestressed tendons in the concrete beam are arranged in the concrete beam, and the number, the diameter and the arrangement positions of the transverse prestressed tendons in the concrete beam are determined according to the stress of the concrete beam.
Further, the longitudinal beam comprises a magnetic guide plate, and the upper end of the magnetic guide plate is connected with the transverse outer end of the sliding top plate, and forms a 90-degree angle.
Further, the transverse outer end of the positioning steel plate is connected with the inner side of the middle lower part of the magnetic guide plate to form a 90-degree angle.
Further, a steel sleeve is arranged in the concrete longitudinal beam, one end of the steel sleeve is welded on the positioning steel plate, and the other end of the steel sleeve is provided with internal threads.
Further, the track panel comprises a stator core, a long stator coil and an anchor bolt, wherein the anchor bolt is matched with the internal thread of the steel sleeve and is used for realizing screw fit connection between the stator core and the steel sleeve; and, in addition, the method comprises the steps of,
The long stator coil is arranged in the clamping groove of the stator core.
Further, longitudinal prestressed tendons in the concrete longitudinal beams are arranged in the concrete longitudinal beams, and the number, the diameter, the arrangement positions and the like of the longitudinal prestressed tendons in the concrete longitudinal beams are determined according to the stress of the concrete cross beams.
In general, the above technical solutions conceived by the present invention, compared with the prior art, enable the following beneficial effects to be obtained:
1. The steel-concrete combined structure track panel is of a steel-concrete combined structure, the track panel structure is of a longitudinal and transverse beam type structure, and when the track panel is installed, the track line shape and the track elevation can be accurately positioned and adjusted through the post-pouring track bearing platform, and the track elevation can be conveniently adjusted through the fastener during operation and maintenance.
2. The track panel of the steel-concrete combined structure completely separates the track structure from the bridge structure, and the track structure is paved after the construction of the bridge structure is completed, so that the manufacturing precision of the bridge structure can be reduced on the premise of meeting the manufacturing and mounting precision of the track structure, and the weight and the volume of the track structure during finish machining are also greatly reduced, thereby reducing the engineering cost.
3. The longitudinal and transverse beam type steel-concrete combined structure track panel is installed and fixed on the track supporting platform at the top of the bridge through the fastener system, and the positioning of the precision of the track in all directions during construction can be well and accurately positioned through the post-cast track supporting platform; during operation, when the bridge is subjected to uneven settlement and concrete shrinkage creep deformation, the rail surface height Cheng Diaozheng can be conveniently carried out through the replacement of the heightening backing plate of the fastener system.
4. The rail panel with the steel-concrete combined structure is combined with the rail panel with the longitudinal and transverse beam type steel-concrete combined structure, so that the rail structure can well adapt to the expansion and contraction deformation of a bridge, and when the bridge is unevenly settled and the concrete is contracted and slowly deformed, rail surface elevation adjustment can be conveniently carried out through replacement of a height-adjusting backing plate of the fastener system, and meanwhile, the fastener system can also well adapt to the expansion and contraction deformation of the bridge.
5. The steel-concrete combined structure track panel comprises two longitudinal beams and a plurality of cross beams, wherein the two longitudinal beams are arranged along the line direction, the cross beams are perpendicular to the line direction, the line shape of the longitudinal beams is consistent with that of the line, the longitudinal beams are made into straight lines or curves according to the line shape, the transverse distance of the longitudinal beams is determined according to the requirements of a high-speed maglev train, and the longitudinal beams are supported by the cross beams, so that stable suspension gaps and lateral distances between a maglev train body and the track panel can be ensured, and the non-contact guiding in the horizontal direction is realized.
6. According to the steel-concrete combined structure track panel, the stator iron core is fixed on the steel sleeve through the anchor bolts, the long stator coil is arranged in the clamping groove of the stator iron core, so that a suspension electromagnet electrified on a suspension frame of a high-speed magnetic levitation train and the long stator coil on the track are attracted to each other, a levitation force is provided for the train, the train is lifted upwards, and a stable levitation gap is ensured by controlling levitation exciting current.
7. The steel-concrete combined structure track panel comprises the magnetic guide plates, wherein the magnetic guide plates interact with the guide plates on the side surfaces of the track to provide guide force, so that a certain lateral distance is kept between the vehicle body and the track, and the non-contact guide in the horizontal direction is realized.
8. According to the steel-concrete combined structure track panel, the length of one section of the longitudinal and transverse beam type steel-concrete combined structure track panel is determined according to the factors of the stator core modulus, the bridge length, the convenience in transportation and erection and the like, so that the manufacturing and construction difficulties of a high-speed magnetic levitation track and a bridge structure are reduced, and the manufacturing precision and the construction efficiency are improved.
Drawings
FIG. 1 is a schematic cross-sectional view of a high-speed magnetic levitation track beam structure in the prior art, FIG. 1 (a) is a schematic cross-sectional view without a transverse slope, and FIG. 1 (b) is a schematic cross-sectional view with a transverse slope;
FIG. 2 is a cross-sectional view of a high-speed magnetic levitation transportation crossbar steel-concrete composite structural rail panel and bridge girder section structural system (with bridge plane on straight line) according to one embodiment of the present invention;
FIG. 3 is a cross-sectional view of a rail panel and bridge beam portion structural system of a high-speed magnetic levitation traffic longitudinal and transverse beam type steel-concrete combined structure when rail surfaces are obliquely arranged by a rail bearing table top plate in an ultrahigh mode (when a bridge plane is arranged on a curve and is ultrahigh);
FIG. 4 is a cross-sectional view of a high-speed magnetic levitation traffic longitudinal and transverse beam type steel-concrete combined structure track panel and bridge beam portion structure system according to an embodiment of the present invention when the track beam is integrally rotated by a certain angle to set an ultra-high (when the bridge plane is positioned on a curve to set the curve ultra-high);
FIG. 5 is a perspective view of a high-speed magnetic levitation transportation longitudinal and transverse beam type steel-concrete combined structure track panel according to an embodiment of the present invention (only a straight line state is illustrated, and when a line plane is located on a curve, a track function part area is manufactured according to a curve line shape);
FIG. 6 is a top view of FIG. 2 taken along section 1-1;
FIG. 7 is a schematic cross-sectional view taken along section 2-2 of FIG. 2.
FIG. 8 is a schematic cross-sectional view taken along section 3-3 of FIG. 2.
Fig. 9 is a schematic cross-sectional view taken along section 4-4 in fig. 2.
FIG. 10 is a schematic cross-sectional view taken along section 5-5 of FIG. 7.
FIG. 11 is a schematic cross-sectional view taken along section 6-6 of FIG. 7.
FIG. 12 is a schematic cross-sectional view taken along section 7-7 of FIG. 7.
Like reference numerals denote like technical features throughout the drawings, in particular: 1-concrete beam, 2-rail bearing table, 3-fastener system, 4-concrete beam, transverse prestressed rib in 5-concrete beam, 6-concrete longitudinal beam, longitudinal prestressed rib in 7-concrete longitudinal beam, 8-sliding roof, 9-magnetic guide plate, 10-steel sleeve, 11-anchor bolt, 12-stator core, 13-long stator coil, 14-positioning steel plate, 15-vertical steel plate, 16-stiffening steel plate, 17-base plate, 18-shear pin, anchor screw of 301-fastener system, 302-double nut, 303-shock absorbing base plate, 304-height adjusting base plate, 305-pre-embedded steel plate.
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. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
The embodiment of the invention provides a high-speed magnetic levitation traffic longitudinal and transverse beam type steel-concrete combined structure track panel which is used for a bridge and a track structure in high-speed magnetic levitation traffic. As shown in fig. 2 to 5, a rail support 2 is arranged on top of the concrete beam portion 1, and the longitudinal and transverse beam type steel-concrete combined structure rail panel is mounted on the rail support 2 through a fastener system 3. The rail bearing table 2 is fixedly connected with the concrete beam 1, so that the rail panel of the whole longitudinal and transverse beam type steel-concrete combined structure is fixed on the concrete beam 1, and a bridge and rail structure of high-speed magnetic levitation traffic is formed. The track structure is completely separated from the bridge structure, and the track structure is paved after the bridge structure is constructed, so that the manufacturing precision of the bridge structure can be reduced on the premise of meeting the manufacturing and mounting precision of the track structure, and the weight and the volume of the track structure during finish machining are also greatly reduced, thereby reducing the construction cost.
The longitudinal and transverse beam type steel-concrete combined structure track panel comprises 2 longitudinal beams along the line direction and a plurality of transverse beams perpendicular to the line direction. The longitudinal beam line shape is consistent with the line shape, the transverse distance between the two longitudinal beams is determined according to the requirements of the high-speed magnetic levitation train according to the line shape, and the longitudinal beam 6, the longitudinal prestressed tendons 7 in the concrete longitudinal beam, the sliding top plate 8, the magnetic guide plate 9 and the positioning steel plate 14 are included. As shown in fig. 5 to 8, the lateral outer end of the sliding top plate 8 and the upper end of the magnetic guide plate 9 are welded together to form a 90 ° angle. The transverse outer end of the positioning steel plate 14 is welded with the inner side of the middle lower part of the magnetic guide plate 9 to form a 90-degree angle. The sliding top plate 8 and the positioning steel plate 14 are pre-embedded on the concrete longitudinal beam 6 through vertical opposite-pull steel bars (not shown). The steel-concrete combined structure track panel is of a steel-concrete combined structure, the track panel structure is of a longitudinal and transverse beam type structure, and when the track panel is installed, the track line shape and the track elevation can be accurately positioned and adjusted through the post-pouring track bearing platform, and the track elevation can be conveniently adjusted through the fastener during operation and maintenance.
In addition, the lower ends of the steel sleeves 10 are welded on the positioning steel plates 14, round holes are formed in the positioning steel plates 14 corresponding to each steel sleeve 10, the stator iron cores 12 are conveniently in spiral fit with the steel sleeves 10 through the anchor bolts 11, the stator iron cores are fixed below the positioning steel plates 14, and the long stator coils 13 are installed in clamping grooves of the stator iron cores 12. The stator core is fixed on the steel sleeve through the anchor bolt, the long stator coil is installed in the draw-in groove of stator core, the electrified suspension electromagnet on the suspension frame of the high-speed maglev train and the long stator coil on the track attract each other conveniently, provide the levitation force for the train, upwards suck the train, and guarantee stable levitation gap through controlling the levitation exciting current.
As shown in fig. 7, longitudinal tendons 7 in the concrete longitudinal beams are arranged in the concrete longitudinal beams 6, and the number, diameter, arrangement position and the like of the longitudinal tendons 7 in the concrete longitudinal beams are configured according to the stress requirements of the concrete cross beam 4. When the structural stress meets the requirement, the longitudinal prestressed tendons 7 in the concrete longitudinal beams are not required.
As shown in fig. 2 to 5, the cross beam comprises a concrete cross beam 4, transverse prestressed tendons 5 in the concrete cross beam, vertical steel plates 15, stiffening steel plates 16, a base plate 17 and shear nails 18. The base plate 17 is provided with oblong holes, and the anchor screws 301 of all the fastener systems penetrate through the oblong holes provided on the base plate 17 to fix the longitudinal and transverse beam type steel-concrete combined structure rail panel on the rail bearing table 2.
As shown in fig. 5 to 8, the vertical steel plates 15 are closely attached to the side surfaces of the concrete beam 4, and form a steel-concrete composite structure with the concrete beam 4 by shear nails 18. The base plate 17 is closely attached to the lower edge of the concrete beam 4, and forms a steel-concrete combined structure with the concrete beam 4 through shear nails 18. The lower end of the vertical steel plate 15 is welded with the base plate 17, and the two right-angle sides of the stiffening steel plate 16 are welded with the vertical steel plate 15 and the base plate 17 respectively. The base plate 17 is provided with oblong holes, and the anchor screws 301 of all the fastener systems penetrate through the oblong holes provided on the base plate 17 to fix the longitudinal and transverse beam type steel-concrete combined structure rail panel on the rail bearing table 2.
As shown in fig. 5 to 8, the cross beams are arranged at intervals along the longitudinal direction of the bridge, the longitudinal intervals of two adjacent cross beams are determined according to the modulus of the stator core and the stress requirement of the longitudinal beam structure, and both ends of each cross beam are connected with the longitudinal beam. The line shape of the longitudinal beams is consistent with the line shape, the transverse distance between the two longitudinal beams is determined according to the requirement of the high-speed magnetic levitation train according to the line shape of the line or curve.
As shown in fig. 5 to 8, the base plate 17 is provided with a oblong hole, the long axis direction of the oblong hole is consistent with the bridge or line direction, the short axis direction length of the oblong hole is slightly larger than the diameter of the anchoring screw of the fastener system, and the long axis direction length of the oblong hole is calculated and determined according to the maximum movement amount of the track panel on the bridge.
As shown in fig. 5, 6 and 7, the length of a section of the longitudinal and transverse beam type steel-concrete combined structure track panel is determined according to the comprehensive consideration of factors such as the modulus of the stator core, the bridge length, the convenience in transportation and erection and the like, so that the manufacturing and construction difficulties of the high-speed magnetic levitation track and the bridge structure are reduced, and the manufacturing precision and the construction efficiency are improved.
As shown in fig. 3, when the bridge plane is positioned on the curve and is provided with the curve height, the rail surface height can be obliquely arranged by adopting the rail bearing table top plate. As shown in fig. 4, when the bridge plane is positioned on the curve and is provided with the curve superelevation, the whole track beam can be rotated for a certain angle to be provided with the superelevation.
As shown in fig. 10, the fastener system is composed of an anchor screw 301, a double-layer nut 302 (one-layer fastening, one-layer loosening preventing), a shock absorbing pad 303, a height adjusting pad 304, and an embedded steel plate 305 of the fastener system. The height-adjusting base plate 304 is arranged between the base plate 17 and the embedded steel plate 305, and plates with different thicknesses can be used for adjusting the height of the track panel so as to adjust the height of the track surface; the damping shim plate 303 is arranged between the double-layer nut and the base plate 17, and can be subdivided into a plurality of damping plate members, and mainly plays a role in reducing the vibration of the track panel structure. The longitudinal and transverse beam type steel-concrete combined structure track panel is installed and fixed on the track supporting platform at the top of the bridge through the fastener system, and the positioning of the precision of the track in all directions during construction can be well and accurately positioned through the post-cast track supporting platform; during operation, when the bridge is subjected to uneven settlement and concrete shrinkage creep deformation, the rail surface height Cheng Diaozheng can be conveniently carried out through the replacement of the heightening backing plate of the fastener system. In addition, the combined use of fastener system and vertical and horizontal beam type steel-concrete composite structure rail panel for the track structure can adapt to the flexible deformation of bridge well, and when the bridge took place uneven subsidence, concrete shrink creep deformation, the change of the height-adjusting backing plate of accessible fastener system was very conveniently carried out rail face altitude mixture control, and simultaneously fastener system also makes the flexible deformation of track function piece adaptation bridge well.
As shown in fig. 9, the rail bearing tables 2 are longitudinally arranged in a pair at regular intervals, each rail bearing table 2 is provided with 2 anchor screws 301 of a fastener system, and the center positions of the anchor screws 301 are in one-to-one correspondence with the centers of oblong holes formed in the base plate 17.
As shown in fig. 11 and 12, the transverse prestressed tendons 5 in the concrete beam are arranged in the concrete beam 4, and the number, diameter, arrangement position and the like of the transverse prestressed tendons 5 in the concrete beam are configured according to the stress requirement of the concrete beam 4. When the structural stress meets the requirement, the transverse prestressed tendons 5 in the concrete beam can be omitted.
It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the invention and is not intended to limit the invention, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (1)
1. The high-speed magnetic levitation traffic longitudinal and transverse beam type steel-concrete combined structure track panel is paved and supported on a concrete beam (1), and is characterized by comprising two longitudinal beams symmetrically arranged along the line direction and a plurality of transverse beams perpendicular to the line direction and arranged between the longitudinal beams; wherein,
The longitudinal beam comprises a sliding top plate (8), a positioning steel plate (14) which is arranged relatively flush with the sliding top plate (8) and a concrete longitudinal beam (6) which is arranged between the sliding top plate (8) and the positioning steel plate (14), and the positioning steel plate (14) is embedded in the concrete longitudinal beam (6) through vertical opposite-pull steel bars;
The beam comprises a concrete beam (4) and rail panel fixed steel members arranged on two sides of the concrete beam (4) in pairs, the concrete beam (4) and a concrete longitudinal beam (6) are integrally poured, the fixed connection with the concrete beam (1) and the rail surface elevation adjustment are realized through the rail panel fixed steel members and a fastener system (3), transverse prestressed tendons (5) in the concrete beam are arranged in the concrete beam (4), and the number, the diameter and the arrangement position of the transverse prestressed tendons (5) in the concrete beam are determined according to the stress of the concrete beam (4);
the longitudinal beam comprises a magnetic guide plate (9), and the upper end of the magnetic guide plate (9) is connected with the transverse outer end part of the sliding top plate (8) and forms a 90-degree angle;
The transverse outer end part of the positioning steel plate (14) is connected with the inner side of the middle lower part of the magnetic guide plate (9) to form a 90-degree angle;
a steel sleeve (10) is arranged in the concrete longitudinal beam (6), one end of the steel sleeve (10) is welded on the positioning steel plate (14), and the other end of the steel sleeve is provided with an internal thread;
The track panel fixing steel member comprises a vertical steel plate (15), a stiffening steel plate (16), a base plate (17) and shear nails (18), wherein the base plate (17) is perpendicular to the concrete beam (4), the vertical steel plate (15) is parallel to the concrete beam (4) and is attached to the concrete beam (4), through holes are formed in the vertical steel plate (15), and the shear nails (18) penetrate through the through holes to fixedly connect the track panel fixing steel member with the concrete beam (4);
the stiffening steel plates (16) are of triangular, circular arc, trapezoid or quadrilateral structures, and two side edges of the stiffening steel plates are respectively welded with the base plates (17) and the vertical steel plates (15) to jointly form a track panel fixing steel member;
A rail bearing table (2) is arranged between the base plate (17) and the concrete beam (1), a long round hole is formed in the base plate (17), the long axis direction of the long round hole is consistent with the concrete beam (1) or the line direction, the short axis direction length of the long round hole is slightly larger than the diameter of an anchoring screw rod of the fastener system, and the long axis direction length of the long round hole is determined according to the maximum movement amount of a rail panel of the longitudinal and transverse beam type steel-concrete combined structure on the concrete beam (1);
The fastener system comprises an anchoring screw rod, a double-layer nut, a damping base plate, a heightening base plate and a pre-buried steel plate, wherein the anchoring screw rod penetrates through a long round hole formed in a base plate (17) to fix a longitudinal and transverse beam type steel-concrete combined structure rail panel on the rail bearing table (2), the base plate (17) is tightly connected with the rail bearing table (2) through the double-layer nut, the heightening base plate and the pre-buried steel plate are sequentially arranged between the base plate (17) and the rail bearing table (2) in a stacked mode from top to bottom, and the damping base plate is arranged between the double-layer nut and the base plate (17);
The track panel comprises a stator core (12), a long stator coil (13) and an anchor bolt (11), wherein the anchor bolt (11) is matched with an internal thread of the steel sleeve (10) and is used for realizing screw fit connection of the stator core (12) and the steel sleeve (10); and, in addition, the method comprises the steps of,
The long stator coil (13) is arranged in a clamping groove of the stator core (12);
The longitudinal prestressed tendons (7) in the concrete longitudinal beams are arranged in the concrete longitudinal beams (6), and the number, the diameter and the arrangement positions of the longitudinal prestressed tendons (7) in the concrete longitudinal beams are determined according to the stress of the concrete cross beam (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910233432.XA CN110029539B (en) | 2019-03-26 | High-speed magnetic levitation traffic longitudinal and transverse beam type steel-concrete combined structure track panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910233432.XA CN110029539B (en) | 2019-03-26 | High-speed magnetic levitation traffic longitudinal and transverse beam type steel-concrete combined structure track panel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110029539A CN110029539A (en) | 2019-07-19 |
| CN110029539B true CN110029539B (en) | 2024-05-31 |
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Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
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