CN107916597A - Novel load-carrying prestressed reinforced concrete sleeper and mine underground track transportation rail structure - Google Patents
Novel load-carrying prestressed reinforced concrete sleeper and mine underground track transportation rail structure Download PDFInfo
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- CN107916597A CN107916597A CN201711131034.4A CN201711131034A CN107916597A CN 107916597 A CN107916597 A CN 107916597A CN 201711131034 A CN201711131034 A CN 201711131034A CN 107916597 A CN107916597 A CN 107916597A
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- sleeper
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- reinforced concrete
- prestressed reinforced
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- 241001669679 Eleotris Species 0.000 title claims abstract description 141
- 239000011150 reinforced concrete Substances 0.000 title claims abstract description 28
- 238000013461 design Methods 0.000 claims description 21
- 239000004567 concrete Substances 0.000 claims description 16
- 230000003014 reinforcing effect Effects 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 5
- 238000007665 sagging Methods 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 3
- 238000004364 calculation method Methods 0.000 claims description 3
- 230000002829 reductive effect Effects 0.000 abstract description 12
- 238000005516 engineering process Methods 0.000 abstract description 11
- 238000009412 basement excavation Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000004568 cement Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000011398 Portland cement Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000005098 hot rolling Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000036961 partial effect Effects 0.000 description 2
- 239000011513 prestressed concrete Substances 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Chemical compound O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910052910 alkali metal silicate Inorganic materials 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000009661 fatigue test Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 230000003137 locomotive effect Effects 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
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000004576 sand Substances 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
- E01B3/00—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails
- E01B3/28—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails made from concrete or from natural or artificial stone
- E01B3/32—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails made from concrete or from natural or artificial stone with armouring or reinforcement
- E01B3/34—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails made from concrete or from natural or artificial stone with armouring or reinforcement with pre-tensioned armouring or reinforcement
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B23/00—Easily dismountable or movable tracks, e.g. temporary railways; Details specially adapted therefor
- E01B23/02—Tracks for light railways, e.g. for field, colliery, or mine use
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Machines For Laying And Maintaining Railways (AREA)
Abstract
The present invention relates to Mine haul railway technology field, more particularly, to a kind of novel load-carrying prestressed reinforced concrete sleeper and mine underground track transportation rail structure, including sleeper body；The gauge of the sleeper body is the first preset value, and the long ratio between the first preset value of rail of the sleeper body is 460/287, and the rail of the sleeper body is wide and the high ratio range of rail is 40/29 to 7/5.In the present solution, after length of sleeper shorten to 2300mm, drift section 9% or so can be reduced, roadway excavation quantities can be effectively reduced, reduce track structure width, reduce drift section, reduce quantities, reduce tunnel investment.
Description
Technical field
The present invention relates to Mine haul railway technology field, more particularly, to a kind of novel load-carrying prestressed reinforced concrete
Sleeper and mine underground track transportation rail structure.
Background technology
With the expansion of mine production rate, to meet the requirement of its production capacity, underground transport equipment specification is continuous therewith
Increase, particularly the increase of mine car volume, cause mine car axis to increase again.The mine car axis in some mines can reach 30t again at present
(ton), or even 35t, the axis for having surmounted ground standard gage railway carry standard, and heavy haul transport becomes the development of underground mine transport
Direction, the increase of axis weight propose new requirement to the intensity of sleeper, and the sleeper of standard gage railway cannot be applicable in mine mine car axis at present
The requirement of weight.
The existing sub-terrain mines scale is smaller built up, underground rail mounted transport system is also fairly simple, and electric locomotive glues weight 3t-30t,
Mine car volume 0.5-10m3, gauge 600mm, 762mm and 900mm, rail weight 12-30kg/m, axis weight maximum 15t, length of sleeper exist
Between 1.1m-1.7m, the axis that can be born focuses on below 15t, due to the increasing of mine capacity, and existing sub-terrain mines reinforced concrete
Native sleeper can only meet below gauge 900mm that the transport of axis weight below 15t requires.The sleeper design axis weight of ground standard gage railway
For 25t, it can not meet that sub-terrain mines increasingly increase that axis is important to be asked.
The content of the invention
It is existing at least to solve it is an object of the present invention to provide a kind of novel load-carrying prestressed reinforced concrete sleeper
There is one of technical problem present in technology.
It is another object of the present invention to provide a kind of with above-mentioned novel load-carrying prestressed reinforced concrete sleeper
Mine underground track transportation rail structure.
To achieve these goals, the present invention provides following technical scheme；
The novel load-carrying prestressed reinforced concrete sleeper that first aspect present invention provides, including sleeper body；
The gauge of the sleeper body is the first preset value, the long ratio between the first preset value of rail of the sleeper body
It is worth for 460/287, the wide rail of the sleeper body with the high ratio range of rail is 40/29 to 7/5.
In the above-mentioned technical solutions, further, the sleeper body is engaged installation with the rail of 60kg/m, and uses bullet
Bar II type fasteners are fixedly connected with the sleeper body and rail.
In any of the above-described technical solution, further, the calculating to the vertical dynamic pressure of sleeper：
Rd=γ × P0 × (1+ α)；
Wherein, Rd --- the vertical dynamic pressure of sleeper；P0 --- quiet wheel weight；γ --- wheel reassigns coefficient；α --- it is comprehensive dynamic
Carry coefficient.
In any of the above-described technical solution, further, to sleeper load calculation of Bending Moment：
Wherein, sleeper rail lower section sagging moment design load Mg is calculated as follows；
Mg=(a1 2/2e-bq/8)Rd；
The intermediate cross-section hogging moment design load Mz of sleeper is calculated as follows；
Mz=- (1-4a1)Rd。
In any of the above-described technical solution, further, the sleeper body is by concrete, reinforcing bar and compressor wire group
Conjunction is made.
In any of the above-described technical solution, further, the reinforcing bar uses HPB300 and HRB400 reinforcing bars.
It is 30 ton hours when axis that the sleeper body is born carries further in any of the above-described technical solution, described the
One preset value is 1435mm, a length of 2300mm of rail, and the width of the sleeper body is 400mm, the height of the sleeper body
Spend for 290mm.
It is 35 ton hours when axis that the sleeper body is born carries further in any of the above-described technical solution, described the
One preset value is 1435mm, a length of 2300mm of rail, and the width of the sleeper body is 420mm, the height of the sleeper body
Spend for 300mm.
In any of the above-described technical solution, further, being smaller than of the adjacent sleeper body is equal to 600mm.
Second aspect of the present invention provides a kind of mine underground track transportation rail structure, including in any of the above-described technical solution
The novel load-carrying prestressed reinforced concrete sleeper.
The mine underground track transportation rail structure that second aspect of the present invention provides, is provided with the new of first aspect offer
Heavily loaded prestressed reinforced concrete sleeper, therefore the novel load-carrying prestressed reinforced concrete sleeper provided with first aspect
Whole beneficial effects, just do not repeat one by one herein.
Using above-mentioned technical proposal, the present invention has the advantages that：
Novel load-carrying prestressed reinforced concrete sleeper provided by the invention, the gauge of sleeper body is the first preset value,
The long ratio between the first preset value of the rail of sleeper body is 460/287, and the rail of sleeper body is wide with the high ratio range of rail
For 40/29 to 7/5, after length of sleeper shortens, drift section 9% or so can be reduced, roadway excavation quantities can be effectively reduced,
Track structure width is reduced, reduces drift section, reduces quantities, reduces tunnel investment.
The additional aspect and advantage of the present invention will become obvious in following description section, or the practice by the present invention
Recognize.
Brief description of the drawings
Below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution of the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in describing below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
Put, other attached drawings can also be obtained according to these attached drawings.
Fig. 1 is the partial structural diagram of existing drift section；
Fig. 2 is the partial structural diagram for the drift section that the sleeper that the embodiment of the present invention provides is installed on tunnel；
Fig. 3 is the structure diagram of novel load-carrying prestressed reinforced concrete sleeper provided in an embodiment of the present invention；
Fig. 4 is the calculating schematic diagram under the rail of sleeper body provided by the invention with rail middle section load moment of flexure.
Reference numeral：
10- sleeper bodies.
Embodiment
Technical scheme is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's all other embodiments obtained without making creative work, belong to the scope of protection of the invention.
It should be noted that in the case where there is no conflict, the feature in embodiments herein and embodiment can be mutually combined.
In the description of the present invention, it is necessary to explanation, term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, merely to
Easy to describe the present invention and simplify description, rather than instruction or imply signified device or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" the 3rd " is only used for description purpose, and it is not intended that instruction or hint relative importance.
In the description of the present invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or be electrically connected；It can be directly connected, can also be indirectly connected by intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
With reference to specific embodiment the present invention will be further explained explanation.
Embodiment one
Sleeper section optimization；
Sleeper section design, which is removed, will meet to design the intensity requirement under the effect of axis load, also meet the installation of rail and fastener
It is required that.
The fastener technology comparative maturity of ground standard gage railway at present, it is contemplated that underground mine rail mounted transport system also uses
The fastener of ground standard gage railway.Therefore in sleeper section design reference ground railway concrete sleeper form of fracture, and in its base
Design optimization is carried out on plinth, to meet the requirement of underground mine heavy haul transport.
Since II type sleeper is difficult in adapt to heavy and extra-heavy duty type track carrying condition, and the bearing capacity of III type sleeper compared with
Greatly, therefore based on III type sleeper the section design of metallurgical mine underground rail travel concrete sleeper is carried out.Underground rail
The section design of transport sleeper mainly considers：
Track structure width is reduced, reduces drift section, reduces quantities
Reduce track structure width and essentially consist in the length for reducing sleeper.Length of sleeper generally with rail lower section sagging moment and
Pillow middle section hogging moment keeps certain proportion relation to determine the reasonable length of sleeper.The length one of standard gage railway concrete sleeper
As between 2.3m-2.7m.It is big according to underground mine rail travel loading capacity, the characteristics of speed of service is low, the length of its sleeper
Can suitably it shorten compared with ground railroad sleeper.Therefore to reduce drift section to the greatest extent, mine underground rail travel length of sleeper shortens
For 2.3m.
As shown in Figs. 1-2, when sleeper body length is 2.3m, and the width in tunnel by sleeper widths affect when,
As shown in Figure 1, then single line haulage drift width relatively can reduce 0.3m, head-room using the span length of III type sleeper (2.6m)
0.1m can be reduced.1.536m3 can be reduced per linear meter(lin.m.) by calculating, and every kilometer can reduce quantities 1536m3, and quantities is reduced
9.05%.The quantities that two-wire haulage drift is saved is more considerable.
As shown in Figure 3-4, novel load-carrying prestressed reinforced concrete sleeper provided in this embodiment, including sleeper body
10；
The gauge of the sleeper body 10 is the first preset value, between the long L of rail of the sleeper body and the first preset value
Ratio be 460/287, the ratio range of the wide W of rail and the high H of rail of the sleeper body is 40/29 to 7/5.
On the basis of above-described embodiment, the sleeper body 10 is engaged installation with the rail of 60kg/m, and uses spring
II type fasteners are fixedly connected with the sleeper body and rail.
The rail and fastener of ground railway have formed a series of standard, technical maturity, and have and largely use experience,
The rail and fastener of underground mine rail travel use the standard of ground railway.Therefore, the design of sleeper top is according to ground iron
Rail pillow carries out, and especially rail support groove design is identical with ground railway.At present ground railway track type mainly have 75kg/m,
60kg/m, 50kg/m, 43kg/m, fastener are mainly spring secures rail to sleeper, there is spring I types fastener, spring II types fastener and spring type III
Fastener.Spring II type fasteners have selected high-quality spring steel to be respectively increased 42% as spring material, yield strength and tensile strength
With 36%.Spring II type fasteners have the advantages that buckle press is big, Strength Safety deposit is big, residual deformation is small.Suitable for II types or
The 60kg/m steel rail lines of type III concrete crosstie.
Spring II types fastener is the same with spring I type fasteners, mainly by ω shapes spring, screw spike, gauge apron, apron block
And the composition such as elastic rubber backing plate.The gauge apron and apron block of jack per station are used cooperatively, and can adjust gauge.
According to the characteristics of underground mine heavy-duty low-speed and top rail support groove requires, and selects 60kg/m rail and spring II types
Fastener.
The maximum stress requirement that the lower railway roadbed of design axis load effect is born；
Track structure is made of rail and fastener, sleeper and railway roadbed.Under the action of design axis carries, not only rail and buckle
Part, sleeper need to meet requirement, while the stress that railway roadbed is born can not exceed its permission bearing stress, when more than fair
Perhaps during bearing stress, railway roadbed will be crushed.The permission bearing stress of railway roadbed is related with the material of railway roadbed, underground rail mounted transport system
Using ballast bed, ballast bed permission bearing stress is 0.5Mpa.According to the requirement for allowing bearing stress, design wide to sleeper
Degree is increased, to reduce the compression of sleeper bottom railway roadbed.
On the basis of above-described embodiment, concrete sleeper design design conditions：Sleeper is by railway roadbed is good, ballastway is closely knit
Smooth condition calculates, and roadbed allows compression to be no more than 0.5MPa, and sleeper spacing is not more than 600mm, and structural analysis is pressed
Short cut technique calculates.Calculating to the vertical dynamic pressure of sleeper：
Rd=γ × P0 × (1+ α)；Wherein, Rd --- the vertical dynamic pressure of sleeper；P0 --- quiet wheel weight, to design dead axle weight
Half；γ --- wheel reassigns coefficient, related with the factor such as rail type, rail support stiffness D and sleeper spacing a, generally
≤ 0.5 is taken, conservative consideration takes 0.5；α --- comprehensive dynamic load factor, it is related with the factor such as road speed, track condition, to heavy duty
Track is 1.5.
As shown in figure 4, to sleeper load calculation of Bending Moment：
Wherein, sleeper rail lower section sagging moment design load Mg is calculated as follows；
Mg=(a1 2/2e-bq/8)Rd；
The intermediate cross-section hogging moment design load Mz of sleeper is calculated as follows；
Mz=- (1-4a1)Rd。
In an optional embodiment of any of the above-described embodiment, the sleeper body is by concrete, reinforcing bar and pre-
Stress wire combination is made.
(1) concrete
1) cement：Portland cement or Portland cement should be selected, early-strength cement must not be used.The intensity of cement
Grade is not lower than 42.5 grades, and alkali content is not to be exceeded 0.30%, and sulfur trioxide content is not to be exceeded 3%, other technologies requirement
The regulation of TB/T3275 should be met.
2) coarse aggregate：5mm-25mm continuous grading rubbles should be used, maximum particle diameter is no more than 25mm, preferably using two level level
With aggregate；When using crushed gravel, the damaged face of crushed gravel should be greater than 70%；Other technologies requirement should meet the rule of TB/T3275
It is fixed.
3) fine aggregate：Thick river sand in should using naturally, clay content are not more than 1.5% by mass, and other technologies requirement should
Meet the regulation of TB/T3275.Should not use have alkali-carbonate reaction activity or mortar bars expansion rate (express method) be more than or
The aggregate of alkali-silicate reactivity equal to 0.20%.
4) concrete：Using C60 concrete, regular reinforcement protective layer thickness 20mm, prestress steel tendon protective layer thickness
25mm。
(2) reinforcing bar is regular reinforcement
1) regular reinforcement uses HPB300 and HRB400 reinforcing bars, and reinforcing bar should meet《Armored concrete violation steel first
Point：Hot rolling plain bar》GB1499.1-2008 and《Concrete reinforcement steel Part II：Hot rolled ribbed bars》GB1499.2-
2007；
2) stirrup uses hot rolling plain bar, its performance should meet the regulation of GB1499.1；
3) tie hoop uses low-carbon cold drawn wire, its performance should meet the regulation of YB/T5294.
(3) compressor wire
1) the elimination stress wire of ultimate tensile strength standard value fpk=1570MPa, nominal diameter d=7mm are used, its
Mechanical performance index should meet the regulation of GB/T5223；
2) tensioning of compressor wire should meet the regulation of TB/T2190-2013.
(4) all material should have verification of conformity and the test report list of regular producer, and can after spot sampling check qualification
Use, all material strength standard value fraction is more than 95%.
Specifically, it is 30 ton hours when axis that the sleeper body is born carries, first preset value is 1435mm, the rail
A length of 2300mm, the width of the sleeper body is 400mm, and the height of the sleeper body is 290mm.
It is 35 ton hours when the axis that the sleeper body is born carries, first preset value is 1435mm, and the rail is a length of
2300mm, the width of the sleeper body is 420mm, and the height of the sleeper body is 300mm.
Being smaller than of the adjacent sleeper body is equal to 600mm.
1435mm gauge length of sleeper is designed as 2.3m, and sleeper top uses 60kg/m rail and spring II type fasteners；
900mm gauge length of sleeper 2.1m, sleeper top use 60kg/m and 75kg/m rail and spring II type fasteners；
During using 900mm gauges, axis carries 30t and 35t sleeper weight and respectively reaches 468kg and 508kg, calculates sleeper length
Spend for 2.1m.And when using 1435mm gauges, it is 473kg and 500kg that axis, which carries 30t and 35t sleepers weight, using 900mm gauges
When sleeper weight be even more than the sleepers of 1435mm gauges, and length of sleeper is not much different, and is considered as 1435mm gauges pair
In stability of the driving with higher, therefore when axis weighs to 30t, 35t, underground rail travel uses 1435mm gauges.
Technical requirements, the method for inspection, inspection rule, mark and accumulating of sleeper etc. will ask for an interview to railroad industry standard《Coagulation
Soil pillow》TBT 2190-2013、《Prestressed concrete rests the head on static load crazing-resistance test method》TB/T1879-2002 and《Prestressed concrete
Soil pillow fatigue test method》TB/T1878-2002.Payload values are examined to be shown in Table.
Examine payload values (kN)
Embodiment two
The embodiment of the present invention two provides a kind of mine underground track transportation rail structure, including described in above-mentioned implementation one
Novel load-carrying prestressed reinforced concrete sleeper.
The mine underground track transportation rail structure that the embodiment of the present invention two provides, is provided with the new of the offer of embodiment one
Type heavy duty prestressed reinforced concrete sleeper, therefore the novel load-carrying prestressed reinforced concrete sleeper provided with embodiment one
Whole beneficial effects, just do not repeat one by one herein.
In conclusion domestic without the concrete sleeper for being suitable for extensive underground mine heavy haul transport at present, this sets
Meter has filled up this blank, novel load-carrying prestressed reinforced concrete sleeper provided by the invention, and length of sleeper is shorten to
After 2300mm, drift section 9% or so can be reduced, roadway excavation quantities can be effectively reduced, reduce track structure width,
Drift section is reduced, reduces quantities, reduces tunnel investment.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe is described in detail the present invention with reference to foregoing embodiments, it will be understood by those of ordinary skill in the art that：Its according to
Can so modify to the technical solution described in foregoing embodiments, either to which part or all technical characteristic into
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme.In addition, it will be appreciated by those of skill in the art that although some embodiments described herein include other implementations
Included some features rather than further feature in example, but the combination of the feature of different embodiments means in the present invention
Within the scope of and form different embodiments.For example, in claims above, embodiment claimed
It is one of any mode to use in any combination.The information for being disclosed in the background section is merely intended to intensification pair
The understanding of the general background technology of the present invention, and it has been this to be not construed as recognizing or imply the information structure in any form
The prior art well known to field technology personnel.
Claims (10)
1. a kind of novel load-carrying prestressed reinforced concrete sleeper, it is characterised in that including sleeper body；
The gauge of the sleeper body is the first preset value, and the long ratio between the first preset value of rail of the sleeper body is
460/287, the rail of the sleeper body is wide and the high ratio range of rail is 40/29 to 7/5.
2. novel load-carrying prestressed reinforced concrete sleeper according to claim 1, it is characterised in that
The sleeper body is engaged installation with the rail of 60kg/m, and is fixedly connected with the sleeper sheet with spring I I type fasteners
Body and rail.
3. novel load-carrying prestressed reinforced concrete sleeper according to claim 1, it is characterised in that
Calculating to the vertical dynamic pressure of sleeper：
Rd=γ × P0 × (1+ α)；
Wherein, Rd --- the vertical dynamic pressure of sleeper；P0 --- quiet wheel weight；γ --- wheel reassigns coefficient；α --- comprehensive dynamic load system
Number.
4. novel load-carrying prestressed reinforced concrete sleeper according to claim 3, it is characterised in that
To sleeper load calculation of Bending Moment：
Wherein, sleeper rail lower section sagging moment design load Mg is calculated as follows；
Mg=(a1 2/2e-bq/8)Rd；
The intermediate cross-section hogging moment design load Mz of sleeper is calculated as follows；
Mz=- (1-4a1)Rd。
5. novel load-carrying prestressed reinforced concrete sleeper according to claim 1, it is characterised in that
The sleeper body is combined by concrete, reinforcing bar and compressor wire and is made.
6. novel load-carrying prestressed reinforced concrete sleeper according to claim 5, it is characterised in that
The reinforcing bar uses HPB300 and HRB400 reinforcing bars.
7. novel load-carrying prestressed reinforced concrete sleeper according to claim 1, it is characterised in that
It is 30 ton hours when the axis that the sleeper body is born carries, first preset value is 1435mm, a length of 2300mm of rail,
The width of the sleeper body is 400mm, and the height of the sleeper body is 290mm.
8. novel load-carrying prestressed reinforced concrete sleeper according to claim 1, it is characterised in that
It is 35 ton hours when the axis that the sleeper body is born carries, first preset value is 1435mm, a length of 2300mm of rail,
The width of the sleeper body is 420mm, and the height of the sleeper body is 300mm.
9. novel load-carrying prestressed reinforced concrete sleeper according to claim 1, it is characterised in that
Being smaller than of the adjacent sleeper body is equal to 600mm.
10. a kind of mine underground track transportation rail structure, it is characterised in that including just like any one of claim 1 to 9 institute
The novel load-carrying prestressed reinforced concrete sleeper stated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711131034.4A CN107916597A (en) | 2017-11-15 | 2017-11-15 | Novel load-carrying prestressed reinforced concrete sleeper and mine underground track transportation rail structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711131034.4A CN107916597A (en) | 2017-11-15 | 2017-11-15 | Novel load-carrying prestressed reinforced concrete sleeper and mine underground track transportation rail structure |
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| CN107916597A true CN107916597A (en) | 2018-04-17 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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