CN108914725A - A kind of magnetic floating traffic is low to set structure location track girder internode limit force transfer structure - Google Patents
A kind of magnetic floating traffic is low to set structure location track girder internode limit force transfer structure Download PDFInfo
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- CN108914725A CN108914725A CN201810965738.XA CN201810965738A CN108914725A CN 108914725 A CN108914725 A CN 108914725A CN 201810965738 A CN201810965738 A CN 201810965738A CN 108914725 A CN108914725 A CN 108914725A
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- track girder
- low
- force transfer
- free segment
- magnetic floating
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- 238000007667 floating Methods 0.000 title claims abstract description 24
- 238000004873 anchoring Methods 0.000 claims abstract description 14
- 230000000694 effects Effects 0.000 claims description 12
- 239000012791 sliding layer Substances 0.000 claims description 11
- 239000010426 asphalt Substances 0.000 claims description 4
- 239000012528 membrane Substances 0.000 claims description 4
- 239000003566 sealing material Substances 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000035939 shock Effects 0.000 description 4
- 238000005339 levitation Methods 0.000 description 3
- 230000035772 mutation Effects 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
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- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 1
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000009120 camo Nutrition 0.000 description 1
- 235000005607 chanvre indien Nutrition 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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- 239000010410 layer Substances 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B25/00—Tracks for special kinds of railways
- E01B25/30—Tracks for magnetic suspension or levitation vehicles
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B25/00—Tracks for special kinds of railways
- E01B25/30—Tracks for magnetic suspension or levitation vehicles
- E01B25/305—Rails or supporting constructions
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Control Of Vehicles With Linear Motors And Vehicles That Are Magnetically Levitated (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a kind of low structure location track girder internodes of setting of magnetic floating traffic to limit force transfer structure, between the track girder (4) of expansion joint two sides, including connecting rod (1) and cap bag (2), the connecting rod (1) is several, be spaced a distance horizontal Tile setting and it is vertical with the expansion joint, it includes being fixed on the anchoring section (101) in the middle part of the bottom plate of the track girder (4) of expansion joint side and the free segment (102) with the track girder (4) clearance fit in the middle part of the bottom plate of the track girder (4) of the expansion joint other side, the anchoring section (101) and free segment (102) are structure as a whole, the cap bag (2) is set in the end of the free segment (102), and gap is equipped between the end of the free segment (102).Magnetic floating traffic of the invention is low to set structure location track girder internode limit force transfer structure, and relative settlement and protuberance can effectively be avoided to prevent stress from concentrating or occurring faulting of slab ends.
Description
Technical field
The invention belongs to track girder internodes to limit power transmission technical field, set knot more particularly, to a kind of magnetic floating traffic is low
Structure location track girder internode limits force transfer structure.
Background technique
Magnetic levitation track traffic engineering is very strict to Deformation control requirement, to ensure that low structure location track girder of setting does not occur
One of expansion joint, track girder is arranged in excessive temperature stress and differential settlement, the general every 10~30m of traditional track beam structure
Lower basis is the earth structure by rock and soil constitution, is influenced by factors such as landform, geological conditions, and quality is relatively not easy to control.
The low track girder for setting structure location is designed by beam on elastic foundation, and single-unit track girder is under self weight and Train induced load effect, track
Beam bottom stress distribution is unevenly the small saddle-shape in the big centre in both sides, and various unfavorable effect of natural environment, track girder are easy in addition
Differential settlement is generated, also inevitably will appear relative settlement between adjacent orbit beam, causes track girder to generate faulting of slab ends, to influence
The ride comfort of magnetic levitation track will affect the normal operation of levitation train when serious.
In the prior art, the low structure location track girder of setting of medium-and low-speed maglev is taken in track girder internode bottom setting limit plate
To solve the above problems.Patent CN204455725 discloses a kind of for the low of middle low speed magnetic suspension traffic engineering embankment location
It sets line construction, internode is used to misplace platen, i.e., structure identical with limit plate.But since limit plate and track girder are overlap joint
Connection, while it is larger to limit board size, so that there is rigidity mutation, beam-ends and limit plate lap-joint at limit plate in elastic foundation
There is biggish stress concentration phenomenon, lap-joint wears repeatedly under dynamic loading, generates unfavorable shadow to the durability of structure
It rings；The track girder natural frequency of vibration and the limit plate natural frequency of vibration are inconsistent, and during magnetic suspension train running, limit plate is influenced by dynamic load
Larger, discontinuity and there are repeated action moment of rupture is easy to appear fatigue damage and unfavorable deformation.Limit plate changes
The boundary condition of track girder beam on elastic foundation, has an adverse effect to the resistance to shock of track girder.In addition limit plate is only capable of controlling
Roadbed differential settlement deformation processed will fail in face of roadbed differential uplift deformation limit plate.
Summary of the invention
Aiming at the above defects or improvement requirements of the prior art, the present invention provides that a kind of magnetic floating traffic is low to set structure location rail
Road beam internode limits force transfer structure, and several connecting rods are equipped between two adjacent sections track girder, and one end of connecting rod is solid for anchoring section
It is scheduled in the track girder of expansion joint side, the other end of connecting rod is free segment, in the track girder of the corresponding expansion joint other side
It is set in the cap bag of free segment end, gap is equipped between free segment end and cap bag, makes it have and is freely stretched along line direction
The function of contracting, but the restriction in other directions of connecting rod is played, play the role of transmission force while limit, so that rail
What foundation stress became under road beam is more uniform, avoids ground from rigidity mutation and stress concentration phenomenon occur, it is ensured that between track girder
There is not relative settlement and differential uplift, avoids track girder that faulting of slab ends occurs, while the transmitting effect of power will greatly improve track girder
Resistance to shock.
A kind of magnetic floating traffic provided by the invention is low to set structure location track girder internode limit force transfer structure, is set to expansion joint
Between the track girder of two sides, including connecting rod and cap bag；
The connecting rod is several, is spaced a distance horizontal Tile setting and, packet vertical with the expansion joint
Include the bottom plate for being fixed on the anchoring section in the middle part of the bottom plate of the track girder of expansion joint side and the track girder set on the expansion joint other side
The free segment with the track girder clearance fit at middle part, the anchoring section and free segment are structure as a whole, and the cap bag is arranged
In the end of the free segment, and gap is equipped between the end of the free segment, for making along the connecting rod has
The limit of the function of road direction free extension and other directions, to discharge, track girder shrinks deformation and what temperature rise temperature drop generated answers
Power avoids relative settlement and protuberance from preventing stress from concentrating or faulting of slab ends occur, while improving rail by limiting the transmitting effect with power
The resistance to shock of road beam.
Further, the outside of the free segment is equipped with sliding layer, and the sliding layer is filled in the free segment and described
In the gap of track girder.
Further, filling loose thread is equipped between the end of the free segment and the cap bag.
Further, the length of the cap bag is not less than 100mm.
Further, the diameter of the cap bag is 1~3mm bigger than the diameter of the free segment.
Further, the length of the connecting rod is greater than or equal to 0.8m.
Further, the diameter of the connecting rod is greater than or equal to 20mm.
Further, the spacing between the adjacent connecting rod is 20cm~50cm.
Further, asphalt membrane is equipped between the cap bag and the sliding layer.
Further, joint sealing material is filled in the expansion joint.
In general, through the invention it is contemplated above technical scheme is compared with the prior art, can obtain down and show
Beneficial effect：
(1) magnetic floating traffic of the invention is low sets structure location track girder internode limit force transfer structure, two adjacent sections track girder
Between be equipped with several connecting rods, one end of connecting rod is that anchoring section is fixed in the track girder of expansion joint side, connecting rod it is another
One end is free segment, is set in the cap bag of free segment end in the track girder of the corresponding expansion joint other side, free segment end with
It is equipped with gap between cap bag, makes it have the function along line direction free extension, but play the limit in other directions of connecting rod
Beam is restricted, plays the role of transmission force while limit, so that foundation stress becomes more uniform under track girder, avoids ground
There is rigidity mutation and stress concentration phenomenon, it is ensured that do not occur relative settlement and differential uplift between track girder, avoid track girder
Faulting of slab ends occurs, while improving the resistance to shock of track girder.
(2) magnetic floating traffic of the invention is low sets structure location track girder internode limit force transfer structure, is equipped on the outside of free segment
Sliding layer, Slipping layers are equipped with filling yarn between free segment and track girder, and in the gap between free segment end and cap bag
Head plays the protective action to free segment along the amount of line direction free extension with restraint of liberty section simultaneously, prevents free segment end
Portion directly contacts with track girder when along line direction free extension and generates excessive wear.
(3) magnetic floating traffic of the invention is low sets structure location track girder internode limit force transfer structure, and the length of connecting rod is not
Preferably less than 0.8m, the diameter of connecting rod 1 are greater than or equal to 25mm, for guaranteeing connection between two adjacent sections track girder and power
Transmitting, in the range of spacing, using minor diameter transmission rod when, spacing gets the small value, using major diameter transmission rod when, spacing
It takes large values, to obtain the faulting of slab ends phenomenon of better anti-difference sedimentation and differential uplift generation.
Detailed description of the invention
Fig. 1 is that a kind of low structure location track girder internode of setting of magnetic floating traffic of the embodiment of the present invention limits the vertical disconnected of force transfer structure
Face schematic diagram；
Fig. 2 is that a kind of low structure location track girder internode of setting of magnetic floating traffic of the embodiment of the present invention limits the cross-section of force transfer structure
Face schematic diagram.
In all attached drawings, same label indicates identical structure or part, wherein：1- connecting rod, 2- cap bag, 3- joint filling material
Material, 4- track girder, 5- sliding layer, 6- fill loose thread；101- anchoring section, 102- free segment.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.As long as in addition, technical characteristic involved in the various embodiments of the present invention described below that
Not constituting conflict between this can be combined with each other.
Fig. 1 is that a kind of low structure location track girder internode of setting of magnetic floating traffic of the embodiment of the present invention limits the vertical disconnected of force transfer structure
Face schematic diagram.Fig. 2 is a kind of low cross set structure location track girder internode and limit force transfer structure of magnetic floating traffic of the embodiment of the present invention
Sectional schematic diagram.As depicted in figs. 1 and 2, track girder form be type tee section box beam, track girder can also be used solid beam,
The forms such as frame column beam, portal frame beam.As depicted in figs. 1 and 2, limit force transfer structure includes connecting rod 1 and cap bag 2, track girder 4
It is extended along train direction of travel, and track girder 4 is equipped with track girder internode along the identical distance in train direction of travel interval and stretches
Contracting seam, expansion joint divides track girder 4 for several sections, with the deformation of adaptive temperature effect and load lower railway beam.
Preferably, the expansion joint of track girder bottom plate internode is preferably 2~3cm, is filled between seam using joint sealing material 3；Into one
Step ground, the waterproof materials such as the preferred pitch plank of joint sealing material 3, pitch hemp cut, bitumastic, polyurethane.
Several connecting rods 1 are equipped between two adjacent sections track girder, connecting rod 1 is set at the bottom plate of track girder 4 and connects phase
Adjacent two section track girders, several connecting rods 1 are spaced a distance setting, and connecting rod 1 is horizontally disposed and vertical with expansion joint, if
Involvement extension bar 1 is used to form connection between two adjacent sections track girder 4, convenient for carrying out power between expansion joint two sides track girder 4
Transmitting is being self-possessed to solve single-unit track girder under Train induced load and various unfavorable effect of natural environment, and track girder bottom is answered
Power is unevenly distributed uniform corvee sedimentation and generates faulting of slab ends offer basis；Spacing between adjacent two connecting rod 1 is excessive, and effect can be sharply
Weaken, too small then effect increase is no longer significant and uneconomical, the spacing in this programme between adjacent connecting rod 1 be 20cm~
50cm, to obtain best effect.
Preferably, steel, aluminium or other high-strength rigid material production can be used in connecting rod 1, wherein are made of steel
When, free segment should wait measures to carry out antirust treatment using zinc-plated, to ensure that connecting rod has enough durabilities.
Further, section is with smooth surface circle；Further, the length of connecting rod 1 is not preferably less than 0.8m, is used for
Guarantee the connection between two adjacent sections track girder 4 and the transmitting of power；Wherein, the diameter of connecting rod 1 is greater than or equal to 20mm, separately
Outside, the spacing between adjacent connecting rod 1 is chosen according to the diameter of connecting rod, in the range of spacing, using minor diameter
When transmission rod, spacing gets the small value, using major diameter transmission rod when, spacing takes large values.
Connecting rod 1 includes anchoring section 101 and free segment 102, and anchoring section 101 is set to the bottom of the track girder 4 of expansion joint side
In the middle part of plate, anchoring section 101 is fixedly connected with track girder 4；Free segment 102 is set in the bottom plate of the track girder 4 of the expansion joint other side
Portion, and cap bag 2 is equipped in the middle part of the bottom plate of the track girder 4 of the expansion joint other side, cap bag 2 is fixed in track girder 4, and it is set in
The end of free segment 102 is equipped with gap, makes it have along line direction free extension between the end and cap bag 2 of free segment 102
Function, the stress that releasable track girder shrinks deformation and temperature rise temperature drop generates.
Free segment 102 is set within track girder 4, ensure that restriction of the free end 102 in addition to route is reversed, in addition anchor
Gu section 101 is fixedly connected, i.e., realization connecting rod 1 is only capable of flexible along line direction, remaining direction is consolidation constraint, passes through limit
The transmitting of position and power acts on, the effective relative settlement for reducing two sides track girder and differential uplift, avoids track girder section and section
Between occur faulting of slab ends at expansion joint, while can also effectively reduce Train induced load effect lower railway beam beam-ends dog-ear, mitigate or
The lateral jackknifing near beam-ends cracking and beam-ends is avoided, while the transmitting effect of power can effectively enhance the vibration resistance of track girder
Energy.
That is the anchoring section 101 of connecting rod 1 is fixedly connected with track girder 4, the free segment 102 and 4 tenon of track girder of connecting rod 1
It connects, to pass through the track girder 4 of 1 joint stitching two sides of connecting rod；Wherein, anchoring section 101 and the connection of free segment 102 form one
Body structure, so that foundation stress becomes more uniform under beam, shape of a saddle stress distribution becomes approximate distributed rectangular under beam,
To avoid ground from biggish stress concentration phenomenon occur.
Preferably, 102 outer surface of free segment is coated with asphalt membrane, is equipped with sliding layer 5 on the outside of asphalt membrane, sliding layer 5 is filled in
Between free segment 102 and track girder 4, for reducing the friction between free segment 102 and track girder 4, while balanced two adjacent sections
Power between track girder 4, the effective relative settlement for reducing two sides track girder and differential uplift.
Further, sliding layer 5 is made using using polyethylene or other materials.
Preferably, the length of cap bag 2 be not less than 100mm, and the diameter of cap bag 2 it is bigger than the diameter of free segment 102 by 2~
3cm, to guarantee that connecting rod 1 same plays due protective effect to 1 end of connecting rod along the flexible of line direction.
Gap between the end and cap bag 2 of free segment 102 is 2cm~3cm, with restraint of liberty section 102 along line direction
The amount of free extension, it is preferable that filling loose thread 6 is equipped in the gap to be prevented for playing the protective action to free segment 102
102 end of free segment directly contacts with cap bag 2 when along line direction free extension and generates excessive wear.
Further, filling loose thread 6 is made using flexible material；Cap bag is made of PVC, but is not limited to PVC.
The gap not less than 2cm distance is equipped in the end of cap bag 2 and track girder 4 between the end of free segment 102, with suitable
Answer the flexible of free segment 102.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, it is not used to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should all include
Within protection scope of the present invention.
Claims (10)
1. a kind of magnetic floating traffic is low to set structure location track girder internode limit force transfer structure, the track girder set on expansion joint two sides
(4) between, which is characterized in that including connecting rod (1) and cap bag (2)；
The connecting rod (1) be several, be spaced a distance horizontal Tile setting and it is vertical with the expansion joint comprising
The anchoring section (101) and the track girder set on the expansion joint other side being fixed in the middle part of the bottom plate of the track girder (4) of expansion joint side
(4) free segment (102) with the track girder (4) clearance fit in the middle part of bottom plate, the anchoring section (101) and free segment
(102) be structure as a whole, the cap bag (2) is set in the end of the free segment (102), and with the free segment (102)
Gap is equipped between end, for making the connecting rod (1) that there is the function along line direction free extension, to discharge track girder
The stress of deformation and the generation of temperature rise temperature drop is shunk, while there is the transmitting effect of other directions limit and power, avoids difference heavy
Drop and protuberance prevent stress from concentrating or occurring faulting of slab ends.
2. a kind of magnetic floating traffic according to claim 1 is low to set structure location track girder internode limit force transfer structure, spy
Sign is that the outside of the free segment (102) is equipped with sliding layer (5), and the sliding layer (5) is filled in the free segment (102)
In the gap of the track girder (4).
3. a kind of magnetic floating traffic according to claim 1 is low to set structure location track girder internode limit force transfer structure, spy
Sign is, filling loose thread (6) is equipped between the end and the cap bag (2) of the free segment (102).
4. a kind of magnetic floating traffic according to right 1 or 3 is low to set structure location track girder internode limit force transfer structure, feature
It is, the length of the cap bag (2) is not less than 100mm.
5. a kind of magnetic floating traffic according to claim 4 is low to set structure location track girder internode limit force transfer structure, spy
Sign is that the diameter of the cap bag (2) is 1~3mm bigger than the diameter of the free segment (102).
6. a kind of magnetic floating traffic according to claim 1 is low to set structure location track girder internode limit force transfer structure, spy
Sign is that the length of the connecting rod (1) is greater than or equal to 0.8m.
7. a kind of magnetic floating traffic according to claim 1 is low to set structure location track girder internode limit force transfer structure, spy
Sign is that the diameter of the connecting rod (1) is greater than or equal to 20mm.
8. a kind of magnetic floating traffic according to claim 1 or claim 7 is low to set structure location track girder internode limit force transfer structure,
It is characterized in that, the spacing between the adjacent connecting rod (1) is 20cm~50cm.
9. a kind of magnetic floating traffic according to claim 2 is low to set structure location track girder internode limit force transfer structure, spy
Sign is, asphalt membrane is equipped between the cap bag (2) and the sliding layer (5).
10. a kind of magnetic floating traffic according to claim 1 is low to set structure location track girder internode limit force transfer structure, spy
Sign is, is filled with joint sealing material (3) in the expansion joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810965738.XA CN108914725B (en) | 2018-08-23 | 2018-08-23 | Magnetic levitation traffic low-structure section rail Liang Jiejian limit force transmission structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810965738.XA CN108914725B (en) | 2018-08-23 | 2018-08-23 | Magnetic levitation traffic low-structure section rail Liang Jiejian limit force transmission structure |
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| Publication Number | Publication Date |
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| CN108914725A true CN108914725A (en) | 2018-11-30 |
| CN108914725B CN108914725B (en) | 2024-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810965738.XA Active CN108914725B (en) | 2018-08-23 | 2018-08-23 | Magnetic levitation traffic low-structure section rail Liang Jiejian limit force transmission structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113373785A (en) * | 2021-06-30 | 2021-09-10 | 中铁第四勘察设计院集团有限公司 | Beam seam dispersion structure of large-span high-speed magnetic levitation bridge |
| CN113931018A (en) * | 2021-10-27 | 2022-01-14 | 中铁第四勘察设计院集团有限公司 | Straddle type single-rail track beam transition buffering device |
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| CN208844373U (en) * | 2018-08-23 | 2019-05-10 | 中铁磁浮交通投资建设有限公司 | A kind of magnetic floating traffic is low to set structure location track girder internode limit force transfer structure |
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| DE102016001953A1 (en) * | 2016-02-19 | 2017-08-24 | Karl Gerhards | Fixed carriageways for railway bridges, their storage on and their connection to the bridge structures |
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| Publication number | Publication date |
|---|---|
| CN108914725B (en) | 2024-04-02 |
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