CN108301265A - A kind of low support rail beam for setting circuit of middle low speed magnetic suspension and its construction method - Google Patents
A kind of low support rail beam for setting circuit of middle low speed magnetic suspension and its construction method Download PDFInfo
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- CN108301265A CN108301265A CN201810277031.XA CN201810277031A CN108301265A CN 108301265 A CN108301265 A CN 108301265A CN 201810277031 A CN201810277031 A CN 201810277031A CN 108301265 A CN108301265 A CN 108301265A
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- rail beam
- magnetic suspension
- low speed
- base plate
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- 238000010276 construction Methods 0.000 title claims abstract description 47
- 239000000725 suspension Substances 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 claims abstract description 16
- 239000004567 concrete Substances 0.000 claims description 41
- 239000011150 reinforced concrete Substances 0.000 claims description 22
- 230000003014 reinforcing effect Effects 0.000 claims description 22
- 238000011065 in-situ storage Methods 0.000 claims description 18
- 239000004020 conductor Substances 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 3
- 230000004807 localization Effects 0.000 claims 2
- 239000000463 material Substances 0.000 abstract description 10
- 239000002699 waste material Substances 0.000 abstract description 5
- 239000002689 soil Substances 0.000 description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 15
- 238000004078 waterproofing Methods 0.000 description 15
- 239000010410 layer Substances 0.000 description 11
- 230000000694 effects Effects 0.000 description 10
- 239000011449 brick Substances 0.000 description 7
- 230000006378 damage Effects 0.000 description 7
- 238000004062 sedimentation Methods 0.000 description 7
- 239000000758 substrate Substances 0.000 description 6
- 239000011241 protective layer Substances 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 230000007774 longterm Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 239000003673 groundwater Substances 0.000 description 3
- 230000008595 infiltration Effects 0.000 description 3
- 238000001764 infiltration Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000011218 segmentation Effects 0.000 description 3
- 241001669679 Eleotris Species 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000686 essence Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000010485 coping Effects 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
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Railway Tracks (AREA)
Abstract
The present invention relates to middle low speed magnetic suspension railway traffic engineering technical field, the low support rail beam for setting circuit of especially a kind of middle low speed magnetic suspension and its construction method.A kind of low support rail beam (1) for setting circuit of middle low speed magnetic suspension, including track (2), support side wall (3) and back plate (4)；The bottom of support side wall (3) is fixed on road structure (5).It realizes the construction method of the support rail beam, first positions support rail beam (1), then make the support rail beam (1), to complete the construction of support rail beam (1)；Support rail beam using the present invention and construction method can reduce the waste of material and its construction procedure of support rail beam in the case that low speed magnetic suspension requires support rail beam in satisfaction.
Description
Technical field
The present invention relates to middle low speed magnetic suspension railway traffic engineering technical field, especially a kind of middle low speed magnetic suspension is low to be set
The support rail beam and its construction method of circuit.
Background technology
Middle low speed magnetic suspension rail traffic is a kind of using the novel of contactless electromagnetic suspension, guiding and drive system
Transportation trade.To improve the precision of circuit, to meet the requirement of magnetic suspension train, the low rail for setting circuit of middle low speed magnetic suspension
Row is generally provided on support rail beam.
Currently, support rail girder construction, including support rail beam beam body, be fixed at the top of support rail beam beam body sleeper pedestal, be fixed on
The section of track at the top of sleeper pedestal, the reinforced concrete floor being fixed on horizontal road bed；Deflection of the support rail beam in curve section
Be realized by adjusting the reinforced concrete floor thickness of support rail beam, but it is such by reinforced concrete floor thickness come
The structure of adjustment not only wastes material, also adds site operation step, reduces construction efficiency.
Invention content
For the defect for overcoming present in above-mentioned support rail beam, the technical problem to be solved by the present invention is to the low speed magnetic in satisfaction
It suspends in the case of requiring support rail beam, it is low to provide a kind of middle low speed magnetic suspension that can be reduced waste of material, reduce construction procedure
Set circuit support rail beam and its construction method.
In order to achieve the above-mentioned object of the invention, the present invention provides following technical schemes：
A kind of low support rail beam for setting circuit of middle low speed magnetic suspension, including track, support side wall and back plate；Wherein, beam
The track is provided on top plate, back plate is arranged in the support-side coping；The bottom of support side wall is fixed on road
On based structures, road structure further includes roadbed base plate and subgrade, and roadbed base plate is affixed with subgrade.
The support side wall of support rail beam is directly anchored on road structure by the present invention, thus can by adjusting both walls it
Between difference in height realize deflection of the support rail beam in curved section, compared to current support rail girder construction, The present invention reduces reinforcing bars
This structure of concrete floor, to reduce the construction for making the reinforced concrete floor, fixing the reinforced concrete floor
Step, this not only reduces the waste of material, the step of also reducing site operation, because of the magnetic suspension suffered by support rail beam
The pressure of train is to be transmitted on ground by roadbed base plate, and the contact area of roadbed base plate and lower layer ground is big, so road
Substrate plate can by the pressure suffered by support rail beam being distributed on lower layer's ground evenly, generated to prevent stress from concentrating
Settlement of subgrade；Furthermore because subgrade can be prevented because banketing or soil deformation unstability due to makes roadbed base plate bear side
To soil pressure, to reduce the deformation of roadbed while the long-time stability that ensure that roadbed base plate；So by by road
Substrate plate and subgrade are fixed together, so that it may make the effect that roadbed long-time stability are high, deformation of sedimentation is small to realize.
Preferably, support rail beam and road structure are reinforced concrete structure, and the reinforcing bar of support rail beam support side wall is embedded in road
In based structures, the reinforcing bar of reinforcing bar and the support side wall in road structure is fixed together by the way of welding, by adopting
With the mode being welded and fixed, ensures that it will not be subjected to displacement deviation in concreting process, further improve support rail beam
Precision, support rail beam and road structure are armored concrete, ensure that stability, the strength and stiffness of support rail beam.
For the support rail beam construction method of the present invention, include the positioning of support rail beam, the making of support rail beam；Support rail beam uses
The mode of armored concrete cast in situs makes, and the positioning step of support rail beam is as follows：Situation one, when straight line location, support rail beam
Top and bottom center line is all overlapped with the center line of circuit；Situation two, when 3 in Curve Segment, the bottom center's line and line of support rail beam
For the center line on road there are offset distance △, the calculation formula of offset distance △ is as follows：△=(d1-d2) × tan α, wherein d1 is that rail top mark is high
Value, d2 are roadbed top surface absolute altitude value, and α is that beam body rotates angle；There are offset distances for the center line of support rail top surface of the beam center line and circuit
ω, offset distance ω are calculated as follows：Wherein, α is that beam body rotates angle to ω=d3 × sin α, and d3 is track structure height value.
Above-mentioned construction method, the calculating for not only disclosing a kind of offset distance △ of the center line of bottom center's line and circuit are public
Formula, also discloses the calculation formula of the offset distance ω of the center line of support rail top surface of the beam center line and circuit a kind of, therefore applies at the scene
Working hour can conveniently realize the positioning of support rail beam according to offset distance △ and offset distance ω.
Preferably, circuit is multi-thread, because the support rail beam in multi-thread corresponding to each line is independent mutually, middle low speed magnetic
Suspend it is low set circuit it is multi-thread on can also support rail beam of the present invention be set according to above-mentioned construction method.
Preferably, before support rail beam concreting, conductor rail pre-buried channel flow is installed on its beam body reinforcing bar, is ensureing to connect
While rail-engaging pre-buried channel flow required precision, it is thus also avoided that the step of punching installation conductor rail again after the completion of support rail beam is improved
Construction efficiency.
It sets circuit road structure and its applies disclosed herein as well is a kind of middle low speed magnetic suspension using above-mentioned support rail beam is low
Work method, the road structure include the support rail beam and roadbed base plate for being used to support the section of track, and support rail beam is arranged by its holder
On the roadbed base plate, the roadbed base plate is placed on ground, further includes subgrade, and subgrade is affixed with roadbed base plate,
The low line sectionalizing of setting of roadbed base plate and the subgrade low speed magnetic suspension in is arranged.
Because of the pressure of the magnetic suspension train suffered by support rail beam, it is transmitted on ground by roadbed base plate, and roadbed
The contact area of bottom plate and lower layer's ground is big, so roadbed base plate can will be under being distributed to of the pressure suffered by support rail beam evenly
On layer ground, to prevent the settlement of subgrade that stress is concentrated and is generated；Furthermore because subgrade can be prevented because banketing
Or soil deformation unstability and so that roadbed base plate is born soil lateral pressure, in the same of the long-time stability that ensure that roadbed base plate
When reduce the deformation of roadbed；So by the way that roadbed base plate and subgrade are fixed together, so that it may keep roadbed long to realize
The effect that phase stability is high, deformation of sedimentation is small.
Preferably, the thickness range of roadbed base plate is 600-1200mm, and roadbed base plate is reinforced concrete structure, roadbed bottom
Concrete in plate has water proofing property, by using the reinforced concrete structure with water proofing property；First, roadbed base plate can be prevented
The water on upper layer penetrates into ground by roadbed base plate and generates destruction to it；Secondly, it is avoided that in Groundwater infiltration roadbed base plate structure
Roadbed base plate is damaged；Armored concrete is common building structure again, is segmented convenient for modularization making, by long-term
It was verified that reinforced concrete structure have preferable weatherability change performance；The above advantage ensure that the long-term steady of roadbed
It is qualitative.The thickness range of roadbed base plate is 600-1200mm, and roadbed base plate can be made to obtain higher intensity；Simultaneously, moreover it is possible to according to
The low gradient for setting circuit of middle low speed magnetic suspension, geological state etc. easily select the thickness needed in 600-1200mm thickness ranges
Degree；
Preferably, subgrade setting sets circuit both sides middle low speed magnetic suspension is low.
Preferably, shape of the subgrade on route section is up-narrow and down-wide trapezoidal.
Preferably, subgrade is vertical plane close to the medial surface of circuit, and subgrade is to incline away from the lateral surface of circuit
Such shape being inclined outwardly is made, moreover it is possible to contribute to structure stress in inclined-plane.
Preferably, subgrade is reinforced concrete structure, and the concrete in subgrade has water proofing property, roadbed base plate
It is fixed together by reinforcing bar, concrete cast in situs with subgrade.
In the above scheme, subgrade is designed to up-narrow and down-wide trapezoidal；Because of the size of subgrade substructure
Bigger than the size of upper part structure, which adds the stability of subgrade, the shape of barricade can rely on itself
Gravity maintains the stability of barricade, prevents from, because banketing or soil deformation unstability due to makes roadbed base plate bear soil lateral pressure, protecting
It demonstrate,proved the long-time stability of roadbed base plate, reduced the deformation of roadbed.Subgrade is being set along circuit both sides, entire road can be made
Base maintains opposite balance, using the concrete with water proofing property, can prevent water from immersing in wall, be damaged to wall,
It can also prevent rainwater, underground water etc. from immersing roadbed base plate by circuit both sides, further increase the long-time stability of roadbed.
Above-mentioned road structure advantageous effect is：By the way that support rail beam, roadbed base plate and subgrade reinforcing bar, concrete is existing
Field, which pours, to be fixed together；On the one hand enable support rail beam that power to be uniformly distributed on ground by roadbed base plate, it is therefore prevented that because
Stress concentration and the settlement of subgrade generated；Another aspect subgrade is effectively prevented because banketing or soil deformation unstability
And roadbed base plate is made to bear soil lateral pressure, it ensure that the long-time stability of roadbed base plate.Pass through the concrete with water proofing property
And reinforced concrete structure, destruction of the water to road structure is efficiently avoided, while increasing the long-time stability of circuit.
A kind of low construction method for setting circuit road structure of middle low speed magnetic suspension, first sectional making roadbed base plate and roadbed gear
Wall.Deformation joint is set between roadbed base plate and each segmentation of subgrade again, rubber fastening band is arranged in deformation joint.It
Afterwards, water-proofing treatment is carried out to subgrade, to complete to construct, it is characterised in that：The width of the deformation joint is set as 1.9-
2.1cm, the reinforcing bar of roadbed base plate pre-buried support rail beam when making, water-proofing treatment step are：Waterproof is first laid on subgrade
Then coiled material adds brick wall protective layer outside waterproof roll again.
Construction working process is：Deformation joint is set between subgrade adjacent sectional between roadbed base plate adjacent sectional, and
Waterstop is set among deformation joint；Armored concrete cast in situs is used to roadbed base plate and the subgrade afterwards；Then divide
Section uses armored concrete cast in situs to support rail beam；Finally to subgrade laying water-proof coiled material and plus brick wall protective layer, apply
Work finishes, wherein the roadbed base plate carries out the cast in situs of armored concrete before support rail beam.
In above-mentioned construction method, by the configuration design of road structure, along with using armored concrete cast in situs
Method by road structure and support rail girder construction it is affixed be an entirety, to increase the long-time stability of roadbed, while also will
Deformation of sedimentation is significantly reduced.Rubber fastening band energy fit sealing deformation joint is set, prevents from seeping water and playing damping, buffering work
With.Pre-buried support rail beam steel, can be such that support rail beam is fixed in roadbed base plate after armored concrete cast in situs in roadbed base plate
Together, it misplaces and deforms caused by preventing from connecting with roadbed base plate because of support rail beam loosely.By being kept off to roadbed after concrete construction
Wall carries out waterproof roll laying plus 240mm thickness brick wall protective layers, prevents from the entrance of underground water, rainwater etc., whole to improve
The long-time stability of a roadbed.
In conclusion by adopting the above-described technical solution, the beneficial effects of the invention are as follows：By reducing existing support rail beam
In Concrete bottom plate structure, realize reduce waste of material, reduce construction procedure effect；By longitudinal divisions, support rail is set
Beam realizes effect convenient to overhaul.
Description of the drawings
Fig. 1 is schematic diagram of the support rail beam in line linear section of the present invention,
Fig. 2 is schematic diagram of the support rail beam in circuit curved section of the present invention,
Fig. 3 is the partial enlarged view at A in Fig. 2,
It is marked in figure：1- support rail beams, 2- tracks, 3- support side walls, 4- back plates, 5- road structures,
D1- rail top mark high level, d2- roadbeds top surface absolute altitude value, d3- track structure height values, α-beam body rotate angle, △-
Bottom center's line of support rail beam and the center line offset distance of circuit, the center line offset distance of ω-support rail top surface of the beam center line and circuit.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be 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.
Implement 1
As shown in Figs. 1-3, the low support rail beam 1 for setting circuit of a kind of middle low speed magnetic suspension, including track 2,3 and of support side wall
Back plate 4；Wherein, track 2 is provided on back plate 4, back plate 4 is arranged at the top of support side wall 3；Support side wall 3
Bottom is directly anchored on road structure 5.
Since the support side wall of support rail beam 1 to be directly anchored on road structure 5, existing curve is held in phase background technology
Beam-and-rail, technical solution of the present invention in satisfaction low speed magnetic suspension circuit to support rail beam " precision of 3 in Curve Segment angle should be 0.2 °,
While construction error is no more than 10mm " required precisions, reduce reinforced concrete floor this structure, is made to reduce
The step of reinforced concrete floor, fixed steel bars concrete floor, the in this way present invention, not only reduce the wave of material from structure
The step of taking, also reducing site operation.
Due to saving support rail beam 1 is longitudinally disposed for 0.75-2.5m mono-, internode distance is 0.3-0.7m, longitudinal divisions setting
To support rail beam, " precision of 3 in Curve Segment angle should be 0.2 ° to low speed magnetic suspension circuit, and construction error is no more than 10mm " essences in satisfaction
While degree requires；Internode setting disconnects certain distance and may be implemented in synchronous disconnection on expansion joint on road structure 5, to real
Existing support rail beam 1 and 5 public sedimentation of road structure, meet differential settlement requirement；The longitudinal internode of support rail beam 1 disconnects certain distance,
It can be convenient to overhaul.
Further, support rail beam 1 and road structure 5 are reinforced concrete structure, and support rail beam 1 supports the reinforcing bar of side wall 3 pre-buried
In road structure 5, the reinforcing bar of reinforcing bar and the support side wall 3 in road structure 5 is fixed together by the way of welding,
By using the mode being welded and fixed, ensures that it will not be subjected to displacement deviation in concreting process, further improve
The precision of support rail beam；Support rail beam 1 and road structure 1 are armored concrete, ensure that stability, the strength and stiffness of support rail beam 1.
The construction method of support rail beam 1 of the present invention, first positions support rail beam 1, then makes support rail beam 1, to complete support rail beam 1
Construction；It is characterized in that：Support rail beam (1) is made by the way of armored concrete cast in situs, the positioning step of support rail beam (1)
It is rapid as follows：Situation one, when straight line location, the top and bottom center line of support rail beam (1) is all overlapped with the center line of circuit；Situation
Two, when 3 in Curve Segment, there are offset distance △, the calculation formula of offset distance △ for bottom center's line of support rail beam (1) and the center line of circuit
It is as follows：△=(d1-d2) × tan α, wherein d1 is rail top mark high level, and d2 is roadbed top surface absolute altitude value, and α is that beam body rotates folder
Angle；There are offset distance ω, offset distance ω to calculate as follows for the center line of support rail beam (1) end face center line and circuit：ω=d3 ×
Sin α, wherein α is that beam body rotates angle, and d3 is track structure height value.
The course of work of above-mentioned construction is：Support rail beam 1 is positioned.Support rail beam 1 and circuit road structure 5 are fixed again.So
Afterwards after assembled support rail girder steel formwork, concrete one-time-concreting is made to be molded.Later, concrete curing reaches form removal after intensity,
Construction is completed.
Above-mentioned construction method, the calculating for not only disclosing a kind of offset distance △ of the center line of bottom center's line and circuit are public
Formula, also discloses the calculation formula of the offset distance ω of the center line of 1 end face center line of support rail beam and circuit a kind of, therefore applies at the scene
Working hour can conveniently realize the positioning of support rail beam according to offset distance △ and offset distance ω.
Further, circuit is multi-thread, because the support rail beam 1 in multi-thread corresponding to each line is independent mutually, middle low speed
Magnetic suspension is low set circuit it is multi-thread on can also support rail beam 1 of the present invention be set according to above-mentioned construction method.
Further, before 1 concreting of support rail beam, conductor rail pre-buried channel flow is installed on its beam body reinforcing bar, is being ensured
While conductor rail pre-buried channel flow required precision, it is thus also avoided that the step of punching installation conductor rail again after the completion of support rail beam carries
High construction efficiency.
Embodiment 2
As shown in Figs. 1-3, road structure 5 includes the support rail beam 1 and roadbed base plate for being used to support the section of track, and support rail beam 1 passes through
Its holder is arranged on the roadbed base plate, and the roadbed base plate is placed on ground, further includes subgrade, subgrade and road
Substrate plate is affixed.
Because of the pressure of the magnetic suspension train suffered by support rail beam 1, it is transmitted on ground by roadbed base plate, and roadbed
The contact area of bottom plate and lower layer's ground is big, thus roadbed base plate can by the pressure suffered by support rail beam 1 being distributed to evenly
On lower layer's ground, to prevent the settlement of subgrade that stress is concentrated and is generated；Furthermore because subgrade can be prevented because filling out
Soil or soil deformation unstability and so that roadbed base plate is born soil lateral pressure, in the long-time stability that ensure that roadbed base plate
Reduce the deformation of roadbed simultaneously；So by the way that roadbed base plate and subgrade are fixed together, so that it may make roadbed to realize
The effect that long-time stability are high, deformation of sedimentation is small.
Further, the thickness of roadbed base plate is 600mm, and roadbed base plate is reinforced concrete structure, mixed in roadbed base plate
Solidifying soil has water proofing property, by using the reinforced concrete structure with water proofing property；First, the water on roadbed base plate upper layer can be prevented
Ground is penetrated by roadbed base plate, and destruction is generated to it；Secondly, substrate of satisfying the need is avoided that in Groundwater infiltration roadbed base plate structure
Plate damages；Armored concrete is common building structure again, is segmented convenient for modularization making, is demonstrate,proved by long-term practice
Bright, there is reinforced concrete structure preferable weatherability to change performance；The above advantage ensure that the long-time stability of roadbed.Road
The thickness of substrate plate is 600mm, the subgrade strength during roadbed base plate can be made to obtain required by low speed magnetic suspension.
Further, subgrade setting sets circuit both sides middle low speed magnetic suspension is low.
Further, shape of the subgrade on route section is up-narrow and down-wide trapezoidal.
Further, subgrade is vertical plane close to the medial surface of circuit, and subgrade is to incline away from the lateral surface of circuit
Such shape being inclined outwardly is made, moreover it is possible to contribute to structure stress in inclined-plane.
Further, subgrade is reinforced concrete structure, and the concrete in subgrade has water proofing property, roadbed base plate
It is fixed together by reinforcing bar, concrete cast in situs with subgrade.
In the above scheme, subgrade is designed to up-narrow and down-wide trapezoidal；Because of the size of subgrade substructure
Bigger than the size of upper part structure, which adds the stability of subgrade, the shape of barricade can rely on itself
Gravity maintains the stability of barricade, prevents from, because banketing or soil deformation unstability due to makes roadbed base plate bear soil lateral pressure, protecting
It demonstrate,proved the long-time stability of roadbed base plate, reduced the deformation of roadbed.Subgrade is being set along circuit both sides, entire road can be made
Base maintains opposite balance, using the concrete with water proofing property, can prevent water from immersing in wall, be damaged to wall,
It can also prevent rainwater, underground water etc. from immersing roadbed base plate by circuit both sides, further increase the long-time stability of roadbed.
5 advantageous effect of road structure is in the present embodiment：By by support rail beam 1, roadbed base plate and subgrade reinforcing bar,
Concrete cast in situs is fixed together；On the one hand enable support rail beam 1 that power to be uniformly distributed on ground by roadbed base plate,
The settlement of subgrade for preventing stress to concentrate and generating；Another aspect subgrade is effectively prevented because banketing or the soil body
Deformation instability and so that roadbed base plate is born soil lateral pressure, ensure that the long-time stability of roadbed base plate.By using with anti-
Aqueous concrete and reinforced concrete structure, efficiently avoids destruction of the water to road structure, while increasing circuit
Long-time stability.
For construction method, first sectional making roadbed base plate and subgrade.Again in roadbed base plate and subgrade
Deformation joint is set between each segmentation, rubber fastening band is arranged in deformation joint.Later, water-proofing treatment is carried out to subgrade, from
And complete construction, it is characterised in that：The width of deformation joint is set as 1.9-2.1cm, roadbed base plate pre-buried support rail beam 1 when making
Reinforcing bar, water-proofing treatment step is：Then the first laying water-proof coiled material on subgrade adds brick wall protection outside waterproof roll again
Layer.
Construction working process is：Deformation joint is set between subgrade adjacent sectional between roadbed base plate adjacent sectional, and
Waterstop is set among deformation joint；Roadbed base plate and subgrade use armored concrete cast in situs afterwards；Then to support rail beam 1
Using armored concrete merogenesis cast in situs；Finally to subgrade laying water-proof coiled material and plus brick wall protective layer, construction finishes,
Wherein roadbed base plate carries out the cast in situs of armored concrete before support rail beam 1.
In above-mentioned arrangement and method for construction, by the configuration design of road structure, along with using armored concrete cast in situs
Method by road structure and 1 structure of support rail beam it is affixed be an entirety, to increase the long-time stability of roadbed, while also will
Deformation of sedimentation is significantly reduced.In practice, the above method can not only increase the stability of roadbed, resistance to settling and convenient for applying
Work, moreover it is possible to ensure that subgrade engineering reaches the high standard required by engineering design.Rubber fastening band energy fit sealing deformation joint is set,
Prevent the cushioning buffer effect that seeps water and play.Pre-buried 1 reinforcing bar of support rail beam, can make support rail beam 1 in armored concrete roadbed base plate
It is fixed together with roadbed base plate after cast in situs, misplaces and become caused by preventing from connecting with roadbed base plate because of support rail beam 1 loosely
Shape.By carrying out waterproof roll laying plus 240mm thickness brick wall protective layers to subgrade after concrete construction, underground is prevented from
The entrance of water, rainwater etc., to improve the long-time stability of entire roadbed.
Further, 2cm deformation joints are set between roadbed base plate and subgrade respectively segmentation, and it is heavy that the deformation joint of 2cm can be eliminated
The harm that drop, temperature and shrinkage stress bring roadbed base plate；
The advantageous effect of the construction method of the present embodiment is：By the configuration design of road structure, along with using reinforcing bar
Concrete cast in situs method by the structure of road structure and support rail beam 1 it is affixed be an entirety, to increase the length of roadbed
Phase stability, while also significantly reducing deformation of sedimentation.In practice, the above method can not only increase roadbed stability,
Resistance to settling and convenient for construction, moreover it is possible to ensure that subgrade engineering reaches the high standard required by engineering design.Rubber fastening band is set
Energy fit sealing deformation joint, prevents the cushioning buffer effect that seeps water and play.Pre-buried 1 reinforcing bar of support rail beam, can make to hold in roadbed base plate
Beam-and-rail is fixed together after armored concrete cast in situs with roadbed base plate, prevents from connecting loosely with roadbed base plate because of support rail beam
Caused by misplace and deformation.By being carried out to subgrade after concrete construction, waterproof roll is laid with plus 240mm thickness brick walls are protected
Layer, prevents from the entrance of underground water, rainwater etc., to improve the long-time stability of entire roadbed.
Embodiment 3
As shown in attached drawing 1-2, the present embodiment is with embodiment 2 the difference is that the thickness of roadbed base plate described in the present embodiment
Degree is 1200mm.
The thickness of roadbed base plate is 1200mm, and roadbed base plate is reinforced concrete structure, the concrete tool in roadbed base plate
There is water proofing property, by using the reinforced concrete structure with water proofing property；First, it can prevent the water on roadbed base plate upper layer from passing through road
Substrate plate penetrates into ground and generates destruction to it；Secondly, it is avoided that in Groundwater infiltration roadbed base plate structure and roadbed base plate is caused
It destroys；Armored concrete is common building structure again, is segmented convenient for modularization making, by long-term it was verified that steel
There is tendon concrete structure preferable weatherability to change performance；The above advantage ensure that the long-time stability of roadbed.Roadbed base plate
Thickness be 1200mm, roadbed base plate can be made to obtain higher intensity；
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement etc., should all be included in the protection scope of the present invention made by within refreshing and principle.
Claims (8)
1. a kind of low support rail beam (1) for setting circuit of middle low speed magnetic suspension, including track (2), support side wall (3) and back plate
(4)；Wherein, the track (2) is arranged on the back plate (4), and the back plate (4) is arranged in the support side wall
(3) top；
It is characterized in that：The bottom of the support side wall (3) is fixed on road structure (5), and the road structure (5) further includes
Roadbed base plate and subgrade, the roadbed base plate and subgrade are affixed.
2. the low support rail beam (1) for setting circuit of middle low speed magnetic suspension according to claim 1, it is characterised in that：The support rail
Beam (1) and the road structure (5) are reinforced concrete structure.
3. the low support rail beam (1) for setting circuit of middle low speed magnetic suspension according to claim 2, it is characterised in that：The support
The reinforcing bar of side wall (3) is embedded in the road structure (5).
4. the low support rail beam (1) for setting circuit of middle low speed magnetic suspension according to claim 3, it is characterised in that：The roadbed
Reinforcing bar and the reinforcing bar of the support side wall (3) in structure (5) are fixed together by the way of welding.
5. support rail beam (1) is first positioned, then made by a kind of construction method of the low support rail beam (1) for setting circuit of middle low speed magnetic suspension
The support rail beam (1), to complete the construction of the support rail beam (1)；
It is characterized in that：The support rail beam (1) is made by the way of armored concrete cast in situs, the support rail beam (1)
Positioning step is：Circuit is divided into straight line location and 3 in Curve Segment, respectively to being held described in straight line location and 3 in Curve Segment progress
The positioning of beam-and-rail (1).
6. the construction method of the low support rail beam (1) for setting circuit of middle low speed magnetic suspension according to claim 5, feature exist
In：The localization method of support rail beam (1) described in straight line location is,
The top and bottom center line of the support rail beam (1) is all overlapped with the center line of circuit.
7. the construction method of the low support rail beam (1) for setting circuit of middle low speed magnetic suspension according to claim 5, feature exist
In：The localization method of the support rail beam (1) is when 3 in Curve Segment,
There are offset distance △ for bottom center's line of the support rail beam (1) and the center line of circuit, and the calculation formula of the offset distance △ is such as
Under：
△=(d1-d2) × tan α
Wherein, d1 is rail top mark high level, and d2 is roadbed top surface absolute altitude value, and α is that beam body rotates angle；
There are offset distance ω, the offset distance ω to calculate as follows for the center line of support rail beam (1) the end face center line and circuit：
ω=d3 × sin α
Wherein, α is that beam body rotates angle, and d3 is track structure height value.
8. the construction method of the low support rail beam (1) for setting circuit of middle low speed magnetic suspension according to claim 5, feature exist
In：Before support rail beam (1) concreting, conductor rail pre-buried channel flow is installed on its beam body reinforcing bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810277031.XA CN108301265A (en) | 2018-03-30 | 2018-03-30 | A kind of low support rail beam for setting circuit of middle low speed magnetic suspension and its construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810277031.XA CN108301265A (en) | 2018-03-30 | 2018-03-30 | A kind of low support rail beam for setting circuit of middle low speed magnetic suspension and its construction method |
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ID=62846831
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| CN201810277031.XA Pending CN108301265A (en) | 2018-03-30 | 2018-03-30 | A kind of low support rail beam for setting circuit of middle low speed magnetic suspension and its construction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111270573A (en) * | 2019-12-06 | 2020-06-12 | 中铁宝桥集团有限公司 | Medium-low speed magnetic levitation track panel anchoring device and installation and adjustment method |
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Application publication date: 20180720 |