CN109680564A - A kind of soft rockmass railway bed and its construction method - Google Patents

A kind of soft rockmass railway bed and its construction method Download PDF

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Publication number
CN109680564A
CN109680564A CN201910062827.8A CN201910062827A CN109680564A CN 109680564 A CN109680564 A CN 109680564A CN 201910062827 A CN201910062827 A CN 201910062827A CN 109680564 A CN109680564 A CN 109680564A
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China
Prior art keywords
subgrade
coefficient
compaction
sillar
bed
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CN201910062827.8A
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Inventor
罗强
程明
朱江江
谢宏伟
付航
余浩
吴迪
谢伟
李傲赢
魏明
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Southwest Jiaotong University
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Southwest Jiaotong University
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Priority to CN201910062827.8A priority Critical patent/CN109680564A/en
Publication of CN109680564A publication Critical patent/CN109680564A/en
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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B2/00—General structure of permanent way
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B2/00—General structure of permanent way
    • E01B2/006—Deep foundation of tracks
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F3/00—Sewer pipe-line systems
    • E03F3/02—Arrangement of sewer pipe-lines or pipe-line systems

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Road Paving Structures (AREA)

Abstract

A kind of soft rockmass railway bed and its construction method, roadbed main body includes: ground, the following embankment of bedding, bottom layer of subgrade and surface layer of subgrade bed from the bottom to top, it is characterized in that: being also equipped between the following embankment of the bedding and ground by gravelly blotter；The following embankment of the bedding is by parent rock saturation uniaxial compressive strength RcThe soft rockmass sillar of >=15MPa fills to be formed；The bottom layer of subgrade is by parent rock saturation uniaxial compressive strength RcThe soft rockmass sillar of >=20MPa fills to be formed；The surface layer of subgrade bed is by parent rock saturation uniaxial compressive strength RcThe soft rockmass sillar of >=25MPa fills to be formed；Slope protection construction is provided in the side slope of the roadbed main body；And gutter is provided on the outside of slope foot.The present invention can make full use of the soft rockmass sillar of Along Railway, and purchase and the transportation cost of filler, cost saving is effectively reduced；Excavation spoir is significantly reduced simultaneously, lowers environmental pollution.

Description

A kind of soft rockmass railway bed and its construction method
Technical field
The present invention relates to a kind of railway bed and its construction methods.
Background technique
Railway bed is the basis of track, and main function is that the laying for meeting track, receiving track and train generate Load provides the necessary condition of train operation.It is known as roadbed filling, the engineering properties of filler for filling roadbed rock-soil material Quality directly influence the deformation and stabilization of roadbed, so the correct selection of roadbed filling, is the important of roadbed filling quality Guarantee.
Railway bed design specification regulation: for speed per hour 160km and mixed passenger and freight railway below and axis weight 30t and following Heavy haul railway, surface layer of subgrade bed are filled using graded broken stone or A group stone matter filler, and bottom layer of subgrade is filled using A, B group stone matter filler, The following embankment of bedding is filled using A, B, C group stone matter filler or low-liquid-limit C group fine grained filler；For speed per hour 120km and with Under mixed passenger and freight railway, surface layer of subgrade bed filled using A group and B1, B2 group stone matter filler, bottom layer of subgrade use A, B group and C1, C2 group stone matter filler fills, and the following embankment of bedding is filled using A, B, C group stone matter filler or low-liquid-limit C group fine grained filler.
In soft rockmass (saturation uniaxial compressive strength Rc< 30MPa) widely distributed area, it cannot by the filler that soft rockmass is formed Directly meet the requirement of specification.Filler usually need to be bought and transported from distant place, it will increase project cost, and local excavation spoir It cannot efficiently use, can also bring environmental problem.
Summary of the invention
First invention purpose of the invention is to provide a kind of soft rockmass railway bed, which is suitable for soft rockmass and divides extensively Cloth area, can make full use of the soft rockmass sillar of Along Railway, and purchase and the transportation cost of filler is effectively reduced, and save engineering and throw Money；Excavation spoir is significantly reduced simultaneously, lowers environmental pollution.
The present invention realizes its first invention purpose the technical scheme adopted is that a kind of soft rockmass railway bed, roadbed master Body includes: ground, the following embankment of bedding, bottom layer of subgrade and surface layer of subgrade bed from the bottom to top, it is characterized in that:
It is also equipped between the following embankment of the bedding and ground by gravelly blotter；
The following embankment of the bedding is by parent rock saturation uniaxial compressive strength RcThe soft rockmass sillar of >=15MPa fills shape At；
The bottom layer of subgrade is by parent rock saturation uniaxial compressive strength RcThe soft rockmass sillar of >=20MPa fills to be formed；
The surface layer of subgrade bed is by parent rock saturation uniaxial compressive strength RcThe soft rockmass sillar of >=25MPa fills to be formed；
Slope protection construction is provided in the side slope of the roadbed main body；And gutter is provided on the outside of slope foot.
Second goal of the invention of the invention is to provide a kind of side of constructing of railway bed that above-mentioned soft rockmass filler fills This method is applied to the widely distributed area of soft rockmass by method, and realization is gathered materials on the spot, and builds the same of cost reducing railway bed When, excavation spoir can be also reduced, protection environment, with good economic efficiency and social benefit are conducive to.
The present invention realizes its second goal of the invention the technical scheme adopted is that a kind of above-mentioned soft rockmass railway bed Construction method the steps include:
A, the processing of ground
Shallow-layer compaction treatment is carried out to ground, makes its bearing capacity not less than 120kPa；
B, the laying of blotter
Selection partial size 75mm and rubble below are laid on ground, form the blotter of 400~600mm thickness；
C, bedding following embankment fills
Parent rock saturation uniaxial compressive strength R is used on blottercThe soft rockmass sillar of >=15MPa is as stone matter filler It is filled, forms the following embankment of bedding of 0.5-12m thickness:
For speed per hour 160km and following mixed passenger and freight railway, if soft rockmass sillar is gravel or rubble, extremely by filling compaction Coefficient of compaction K >=0.9, coefficient of subgrade reaction K30≥110MPa/m；If soft rockmass sillar is block stone, by filling compaction to coefficient of compaction K >=0.9, coefficient of subgrade reaction K30≥130MPa/m；
For axis weight 30t and following heavy haul railway, then by filling compaction to coefficient of compaction K >=0.92, coefficient of subgrade reaction K30≥ 130MPa/m；
D, bottom layer of subgrade fills
Parent rock saturation uniaxial compressive strength R is used on the following embankment of beddingcThe soft rockmass sillar of >=20MPa is as stone matter Filler is filled, and bottom layer of subgrade is formed:
For speed per hour 160km and following mixed passenger and freight railway, by stone matter filling compaction to coefficient of compaction K >=0.93, ground COEFFICIENT K30>=130MPa/m, bottom layer of subgrade with a thickness of 1.9m；
For axis weight 30t or less heavy haul railway, by stone matter filling compaction to coefficient of compaction K >=0.95, coefficient of subgrade reaction K30≥ 150MPa/m, bottom layer of subgrade with a thickness of 1.9m；
For the heavy haul railway of axis weight 30t, by stone matter filling compaction to coefficient of compaction K >=0.95, coefficient of subgrade reaction K30≥ 150MPa/m, bottom layer of subgrade with a thickness of 2.3m；
E, surface layer of subgrade bed fills
Parent rock saturation uniaxial compressive strength R is used on bottom layer of subgradecThe soft rockmass sillar of >=25MPa is as stone matter filler It is filled, forms surface layer of subgrade bed:
For speed per hour 160km and following mixed passenger and freight railway, by stone matter filling compaction to coefficient of compaction K >=0.95, ground COEFFICIENT K30>=150MPa/m, surface layer of subgrade bed with a thickness of 0.6m；
For axis weight 30t or less heavy haul railway, by stone matter filling compaction to coefficient of compaction K >=0.97, coefficient of subgrade reaction K30≥ 190MPa/m, surface layer of subgrade bed with a thickness of 0.6m；
For the heavy haul railway of axis weight 30t, by stone matter filling compaction to coefficient of compaction K >=0.97, coefficient of subgrade reaction K30≥ 190MPa/m, surface layer of subgrade bed with a thickness of 0.7m；
F, the building in slope protection construction and gutter
The slope protection construction of grid type skeleton is formed in the two sides cast-in-place concrete of roadbed main body, and is constructed in slope protection Surface formed protrusion water retaining brim and perforation gutter channel；And longitudinal gutter is constructed on the outside of the slope foot of roadbed main body.
Compared with prior art, the beneficial effects of the present invention are:
The blotter structure that the present invention adds makes subgrade drainage performance good, avoids water logging to roadbed mechanical property Damage ensure that the long-term secured, reliable of roadbed；The slope protection construction of grid type skeleton also strengthens the intensity of roadbed and prevents The performances such as water.Also, the load type and power born according to different structure layer, layering propose the soft rockmass of different configuration layer The parent rock saturation uniaxial compressive strength R of sillarc, coefficient of compaction K, coefficient of subgrade reaction K30With the controlling value of techonosphere thickness, thus Under the premise of meeting each layer mechanical property of roadbed, abundant, the reasonable utilization of soft rockmass sillar is realized.
In short, the present invention by the above measure, under the premise of guaranteeing roadbed safety, utilizes soft rockmass rock to greatest extent Block is come the roadbed that constructs a railway.The area widely distributed suitable for soft rockmass, can gather materials on the spot, and the purchase and fortune of filler is greatly decreased Defeated cost, hence it is evident that reduce the project cost of railway bed；Meanwhile the soft rockmass digging soil of generation of digging pit also is reduced and avoiding, And the problem of influencing environment.
The present invention is further described in detail with reference to the accompanying drawings and detailed description.
Detailed description of the invention
Fig. 1 is the cross-sectional configuration schematic diagram of the soft rockmass railway bed of the embodiment of the present invention.
Fig. 2 is the front view (the A direction view of Fig. 1) of the slope protection construction of the embodiment of the present invention.
Specific embodiment
Fig. 1-2 is shown, and a kind of specific embodiment of the invention is that a kind of soft rockmass railway bed, roadbed main body is under Supreme includes: ground 5, the following embankment 3 of bedding, bottom layer of subgrade 2 and surface layer of subgrade bed 1, it is characterized in that:
It is also equipped between the following embankment 3 of the bedding and ground 5 by gravelly blotter 4；
The following embankment 3 of the bedding is by parent rock saturation uniaxial compressive strength RcThe soft rockmass sillar of >=15MPa fills shape At；
The bottom layer of subgrade 2 is by parent rock saturation uniaxial compressive strength RcThe soft rockmass sillar of >=20MPa fills to be formed；
The surface layer of subgrade bed 1 is by parent rock saturation uniaxial compressive strength RcThe soft rockmass sillar of >=25MPa fills to be formed；
Slope protection construction 6 is provided in the side slope of the roadbed main body；And gutter 7 is provided on the outside of slope foot.
A kind of construction method of above-mentioned soft rockmass railway bed, the steps include:
A, the processing of ground
Shallow-layer compaction treatment is carried out to ground 5, makes its bearing capacity not less than 120kPa；
B, the laying of blotter
Selection partial size 75mm and rubble below are laid on ground 5, form the blotter 4 of 400~600mm thickness；
C, bedding following embankment fills
Parent rock saturation uniaxial compressive strength R is used on blotter 4cThe soft rockmass sillar of >=15MPa is filled out as stone matter Material is filled, and the following embankment 3 of bedding of 0.5-12m thickness is formed:
For speed per hour 160km and following mixed passenger and freight railway, if soft rockmass sillar is gravel or rubble, extremely by filling compaction Coefficient of compaction K >=0.9, coefficient of subgrade reaction K30≥110MPa/m；If soft rockmass sillar is block stone, by filling compaction to coefficient of compaction K >=0.9, coefficient of subgrade reaction K30≥130MPa/m；
For axis weight 30t and following heavy haul railway, then by filling compaction to coefficient of compaction K >=0.92, coefficient of subgrade reaction K30≥ 130MPa/m；
D, bottom layer of subgrade fills
Parent rock saturation uniaxial compressive strength R is used on the following embankment 3 of beddingcThe soft rockmass sillar of >=20MPa is as stone Matter filler is filled, and bottom layer of subgrade 2 is formed:
For speed per hour 160km and following mixed passenger and freight railway, by stone matter filling compaction to coefficient of compaction K >=0.93, ground COEFFICIENT K30>=130MPa/m, bottom layer of subgrade 2 with a thickness of 1.9m；
For axis weight 30t or less heavy haul railway, by stone matter filling compaction to coefficient of compaction K >=0.95, coefficient of subgrade reaction K30≥ 150MPa/m, bottom layer of subgrade 2 with a thickness of 1.9m；
For the heavy haul railway of axis weight 30t, by stone matter filling compaction to coefficient of compaction K >=0.95, coefficient of subgrade reaction K30≥ 150MPa/m, bottom layer of subgrade 2 with a thickness of 2.3m；
E, surface layer of subgrade bed fills
Parent rock saturation uniaxial compressive strength R is used on bottom layer of subgrade 2cThe soft rockmass sillar of >=25MPa is filled out as stone matter Material is filled, and surface layer of subgrade bed 1 is formed:
For speed per hour 160km and following mixed passenger and freight railway, by stone matter filling compaction to coefficient of compaction K >=0.95, ground COEFFICIENT K30>=150MPa/m, surface layer of subgrade bed 1 with a thickness of 0.6m；
For axis weight 30t or less heavy haul railway, by stone matter filling compaction to coefficient of compaction K >=0.97, coefficient of subgrade reaction K30≥ 190MPa/m, surface layer of subgrade bed 1 with a thickness of 0.6m；
For the heavy haul railway of axis weight 30t, by stone matter filling compaction to coefficient of compaction K >=0.97, coefficient of subgrade reaction K30≥ 190MPa/m, surface layer of subgrade bed 1 with a thickness of 0.7m；
F, the building in slope protection construction and gutter
The slope protection construction 6 of grid type skeleton is formed in the two sides cast-in-place concrete of roadbed main body, and in slope protection structure The surface made forms the water retaining brim 6a of protrusion and the gutter channel 6b of perforation；And longitudinal row is constructed on the outside of the slope foot of roadbed main body Ditch 7.

Claims (2)

1. a kind of soft rockmass railway bed, roadbed main body includes: ground (5), the following embankment of bedding (3), bedding bottom from the bottom to top Layer (2) and surface layer of subgrade bed (1), it is characterized in that:
It is also equipped between the following embankment of the bedding (3) and ground (5) by gravelly blotter (4)；
The following embankment of the bedding (3) is by parent rock saturation uniaxial compressive strength RcThe soft rockmass sillar of >=15MPa fills to be formed；
The bottom layer of subgrade (2) is by parent rock saturation uniaxial compressive strength RcThe soft rockmass sillar of >=20MPa fills to be formed；
The surface layer of subgrade bed (1) is by parent rock saturation uniaxial compressive strength RcThe soft rockmass sillar of >=25MPa fills to be formed；
Slope protection construction (6) is provided in the side slope of the roadbed main body；And gutter (7) are provided on the outside of slope foot.
2. a kind of construction method of soft rockmass railway bed described in claim 1, the steps include:
A, the processing of ground
Shallow-layer compaction treatment is carried out to ground (5), makes its bearing capacity not less than 120kPa；
B, the laying of blotter
Selection partial size 75mm and rubble below are laid on ground (5), form the blotter (4) of 400~600mm thickness；
C, bedding following embankment fills
Parent rock saturation uniaxial compressive strength R is used on blotter (4)cThe soft rockmass sillar of >=15MPa as stone matter filler into Row fills, and forms the following embankment of bedding (3) of 0.5-12m thickness:
It is gravel or rubble for speed per hour 160km and following mixed passenger and freight railway, such as soft rockmass sillar, by filling compaction to compacting COEFFICIENT K >=0.9, coefficient of subgrade reaction K30≥110MPa/m；If soft rockmass sillar be block stone, by filling compaction to coefficient of compaction K >= 0.9, coefficient of subgrade reaction K30≥130MPa/m；
For axis weight 30t and following heavy haul railway, then by filling compaction to coefficient of compaction K >=0.92, coefficient of subgrade reaction K30≥ 130MPa/m；
D, bottom layer of subgrade fills
Parent rock saturation uniaxial compressive strength R is used on the following embankment of bedding (3)cThe soft rockmass sillar of >=20MPa is filled out as stone matter Material is filled, and is formed bottom layer of subgrade (2):
For speed per hour 160km and following mixed passenger and freight railway, by stone matter filling compaction to coefficient of compaction K >=0.93, coefficient of subgrade reaction K30>=130MPa/m, bottom layer of subgrade (2) with a thickness of 1.9m；
For axis weight 30t or less heavy haul railway, by stone matter filling compaction to coefficient of compaction K >=0.95, coefficient of subgrade reaction K30≥ 150MPa/m, bottom layer of subgrade (2) with a thickness of 1.9m；
For the heavy haul railway of axis weight 30t, by stone matter filling compaction to coefficient of compaction K >=0.95, coefficient of subgrade reaction K30≥150MPa/ M, bottom layer of subgrade (2) with a thickness of 2.3m；
E, surface layer of subgrade bed fills
Parent rock saturation uniaxial compressive strength R is used on bottom layer of subgrade (2)cThe soft rockmass sillar of >=25MPa as stone matter filler into Row fills, and is formed surface layer of subgrade bed (1):
For speed per hour 160km and following mixed passenger and freight railway, by stone matter filling compaction to coefficient of compaction K >=0.95, coefficient of subgrade reaction K30>=150MPa/m, surface layer of subgrade bed (1) with a thickness of 0.6m；
For axis weight 30t or less heavy haul railway, by stone matter filling compaction to coefficient of compaction K >=0.97, coefficient of subgrade reaction K30≥ 190MPa/m, surface layer of subgrade bed (1) with a thickness of 0.6m；
For the heavy haul railway of axis weight 30t, by stone matter filling compaction to coefficient of compaction K >=0.97, coefficient of subgrade reaction K30≥190MPa/ M, surface layer of subgrade bed (1) with a thickness of 0.7m；
F, the building in slope protection construction and gutter
(6) are constructed in the slope protection that the two sides cast-in-place concrete of roadbed main body forms grid type skeleton, and are constructed in slope protection Surface formed protrusion water retaining brim (6a) and penetrate through gutter channel (6b)；And longitudinal direction is constructed on the outside of the slope foot of roadbed main body Gutter (7).
CN201910062827.8A 2019-01-23 2019-01-23 A kind of soft rockmass railway bed and its construction method Pending CN109680564A (en)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100642345B1 (en) * 2005-11-02 2006-11-14 주식회사 대한콘설탄트 A absoring impact railway for preventing dip of weakness ground
CN201095717Y (en) * 2007-09-30 2008-08-06 中铁二院工程集团有限责任公司 Red beds filled high-speed railway roadbed
JP2012158867A (en) * 2011-01-29 2012-08-23 Osumi Saiseki Kyodokumiai Manufacturing method for adjusting material for civil engineering and adjusting material for civil engineering
CN102787533A (en) * 2012-09-04 2012-11-21 铁道第三勘察设计院集团有限公司 Modification structure of railway subgrade bed surface layer
CN103276649A (en) * 2013-06-21 2013-09-04 云南云岭高速公路桥梁工程有限公司 Method for constructing multi-thickness rockfill embankment with lateral confinement and layering functions
CN104532712A (en) * 2014-12-25 2015-04-22 中交第二公路勘察设计研究院有限公司 Design method and structure for preventing settlement-deformation damage of soft-rock subgrade of road
CN206267134U (en) * 2016-11-17 2017-06-20 山东科技大学 A kind of civil grille
CN209686150U (en) * 2019-01-23 2019-11-26 西南交通大学 A kind of soft rockmass railway bed

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100642345B1 (en) * 2005-11-02 2006-11-14 주식회사 대한콘설탄트 A absoring impact railway for preventing dip of weakness ground
CN201095717Y (en) * 2007-09-30 2008-08-06 中铁二院工程集团有限责任公司 Red beds filled high-speed railway roadbed
JP2012158867A (en) * 2011-01-29 2012-08-23 Osumi Saiseki Kyodokumiai Manufacturing method for adjusting material for civil engineering and adjusting material for civil engineering
CN102787533A (en) * 2012-09-04 2012-11-21 铁道第三勘察设计院集团有限公司 Modification structure of railway subgrade bed surface layer
CN103276649A (en) * 2013-06-21 2013-09-04 云南云岭高速公路桥梁工程有限公司 Method for constructing multi-thickness rockfill embankment with lateral confinement and layering functions
CN104532712A (en) * 2014-12-25 2015-04-22 中交第二公路勘察设计研究院有限公司 Design method and structure for preventing settlement-deformation damage of soft-rock subgrade of road
CN206267134U (en) * 2016-11-17 2017-06-20 山东科技大学 A kind of civil grille
CN209686150U (en) * 2019-01-23 2019-11-26 西南交通大学 A kind of soft rockmass railway bed

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