CN107178043A - A kind of coarse-grained soil high-fill roadbed discharge structure and its construction technology - Google Patents

A kind of coarse-grained soil high-fill roadbed discharge structure and its construction technology Download PDF

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Publication number
CN107178043A
CN107178043A CN201710411501.2A CN201710411501A CN107178043A CN 107178043 A CN107178043 A CN 107178043A CN 201710411501 A CN201710411501 A CN 201710411501A CN 107178043 A CN107178043 A CN 107178043A
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China
Prior art keywords
coarse
roadbed
native
fill
grained soil
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CN201710411501.2A
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Chinese (zh)
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CN107178043B (en
Inventor
何忠明
杨煜
王保林
唐昊龙
刘雅欣
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Changsha University of Science and Technology
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Changsha University of Science and Technology
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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01FADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F5/00Draining the sub-base, i.e. subgrade or ground-work, e.g. embankment of roads or of the ballastway of railways or draining-off road surface or ballastway drainage by trenches, culverts, or conduits or other specially adapted means
    • E01F5/005Culverts ; Head-structures for culverts, or for drainage-conduit outlets in slopes
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C3/00Foundations for pavings
    • E01C3/04Foundations produced by soil stabilisation
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C3/00Foundations for pavings
    • E01C3/06Methods or arrangements for protecting foundations from destructive influences of moisture, frost or vibration
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00Adapting or protecting infrastructure or their operation
    • Y02A30/60Planning or developing urban green infrastructure

Abstract

The invention discloses a kind of coarse-grained soil high-fill roadbed discharge structure and its construction technology, it mainly includes:Roadbed (1), fiber native (2), retaining wall (3), drainage arrangement (4), anti-seepage geotextile (12), anti-filter geotextiles (6), longitudinal drainage pipe (8), reflux valve (9);Hygroscopic fibre material and coarse-grained soil are carried out mixing first and form fiber soil (2) by the present invention, fill jointly in the range of high-fill roadbed (1) certain depth, secondly in native (2) bottom laying anti-seepage geotextile (12) of fiber, and it is connected with drainage arrangement (4), and transverse drain (5) is connected with pumping equipment (4) by rubber ring interface (10);Retaining wall (3) is finally laid near tall earth fill platform toe, prevents rainfall from being penetrated into by toe in side slope.The present invention can prevent washing away for rainfall infiltration side slope, again can discharge the ponding in roadbed in time;Not only drainage effect is good, compression strength is high, and convenient construction, applied widely, can effectively extend the service life of highway.

Description

A kind of coarse-grained soil high-fill roadbed discharge structure and its construction technology
Technical field
The present invention relates to highway bed construction and water-proof drainage technical field, particularly with regard to a kind of coarse-grained soil high-fill roadbed Discharge structure and its construction technology.
Background technology
Developed rapidly with the progress of society with economic, the construction of the communication particularly highway of China is obtained Achievement highly visible.Yet with various factors, has there is different degrees of disease in the highway that operation has been put into Evil, wherein disease is particularly acute caused by roadbed damaged or destroyed by flood.On the one hand roadbed bears traffic load as the basis of pavement of road The gravity of diffusion-induced stress and road surface structare layer;On the other hand influenceed again by various natural causes, its reclaimed water is mostly important One of factor, therefore carry out subgrade drainage, it is ensured that roadbed is all the time extremely important in dry, solid and stable state.
Passed through at present for high-fill roadbed draining frequently with two class forms, one kind is land drainage facility, including gutter, row Ditch, shuting, inverted-siphon and drop chute etc., another kind of is underground drainage facility, including bright ditch, rhone, covered conduit, sewer And seepage well etc.;The major function of wherein pavement drainage facility is that flowing through for rainwater is guided in rainfall so that most of Rainwater is discharged in the way of runoff outside roadbed scope, but for the less rainfall of intensity, more rainwater is still with seepage flow Mode enters in roadbed, and coarse-grained soil high-fill roadbed is constantly corroded;Underground drainage facilities are as a kind of important Pumping equipment, its primary structure excavates covered conduit, sewer etc. in shoulder, although can solve rainfall moderate rain water-water reactor The problem of product, but these structures are there is also certain danger of collapsing, and also do not account for the influence that traffic load is given birth to roadbed local products, And good protective action can not be played to roadbed for the less rainfall of intensity.
The content of the invention
For problem above, the invention discloses a kind of coarse-grained soil high-fill roadbed discharge structure and its construction technology;Adopt Use following technical scheme:A kind of coarse-grained soil high-fill roadbed discharge structure and its construction technology, by roadbed (1), fiber native (2), Retaining wall (3), drainage arrangement (4), transverse drain (5), anti-filter geotextiles (6), open gradation rubble (7), longitudinal drainage pipe (8), reflux valve (9), rubber ring interface (10), binder materials (11), anti-seepage geotextile (12);Described fiber native (2) is by thick The native and a certain proportion of water imbibition geofabrics material of grain, which is blended, to be formed, and wherein hygroscopicity fibre quality is 0.2%;Described fibre Native (2) lower curtate laying anti-seepage geotextile (12) of dimension, only sets interface between longitudinal drainage pipe (8) and native (2) bottommost of fiber; Ponding in described interface laying anti-filter geotextiles (6), filter fiber soil (2), it is ensured that the drying regime of roadbed;Realize The road structure of " ecological, environmental protection, long-life ".
A kind of described coarse-grained soil high-fill roadbed discharge structure and its construction technology, it is characterized in that, described draining dress (4) are put for cuboid, including open gradation rubble (7) and longitudinal drainage pipe (8), drainpipe uses high intensity pvc double-walled ripples Line pipe, nominal diameter is 110mm.
A kind of described coarse-grained soil high-fill roadbed discharge structure and its construction technology, it is characterized in that, described longitudinal direction row Water pipe (8) lower curtate is connected with transverse drain (5) by interface, and interface installs plastics reflux valve (9), transverse drain (5) nominal diameter is used for 80mm high intensity pvc double-wall corrugated pipes.
A kind of described coarse-grained soil high-fill roadbed discharge structure and its construction technology, it is characterized in that, described gelling material Expect that the binder materials (11) in (11) actually organic pitch, transverse drain (5) is irrigated outside the venue, connect by rubber ring Mouth (10) closely connects transverse drain (5) and longitudinal drainage pipe (8).
Beneficial effects of the present invention:It is native (2) by filling fiber in the range of roadbed work area, can not only be timely sharp The ponding in roadbed is discharged with capillarity, and can be limited using the frictional resistance or snap-in force between fibrous material and soil The displacement of the soil body processed, it is ensured that roadbed is dried and stable state;In addition retaining wall (3) is filled at high roadbed platform toe, not only Prevent in the rainfall crippled place of rainwater side slope washes away infringement, and rainwater can also be prevented to enter by toe in roadbed; This method can ensure the stability of roadbed, and not only drainage effect is good, compression strength is high, and convenient construction, applied widely, Meet the subgrade drainage new design concept of " ecological, environmental protection, long-life ".
Brief description of the drawings
Fig. 1 is the profile of coarse-grained soil high-fill roadbed discharge structure;
Fig. 2 is the structure chart of drainage arrangement in coarse-grained soil high-fill roadbed discharge structure;
In figure:1. roadbed, 2. fibers are native, 3. retaining walls, 4. drainage arrangements, 5. transverse drains, 6. anti-filter geotextiles, 7. open level With rubble, 8. longitudinal drainage pipes, 9. reflux valves, 10. rubber ring interfaces, 11. binder materials, 12. anti-seepage geotextiles.
Embodiment
Structure combination of the present invention and implementation steps are described further below in conjunction with the accompanying drawings.
As shown in Figure 1 and Figure 2, the respectively structure of the profile of coarse-grained soil high-fill roadbed discharge structure and drainage arrangement Figure, the subgrade drainage structure includes:Roadbed (1), fiber native (2), retaining wall (3), drainage arrangement (4), transverse drain (5), Anti-filter geotextiles (6), open gradation rubble (7), longitudinal drainage pipe (8), reflux valve (9), rubber ring interface (10), binder materials (11), anti-seepage geotextile (12);Wherein described fiber native (2) is by coarse-grained soil and a certain proportion of geotechnological hygroscopic fibre material Blending is formed, and wherein hygroscopicity fibre quality is 0.2%, native (2) lower curtate laying anti-seepage geotextile (12) of described fiber, is only existed Interface, described interface laying anti-filter geotextiles (6) are set between longitudinal drainage pipe (8) and native (2) bottommost of fiber.
1st, the laying of pumping equipment and the filled height of fiber soil are highly determined according to the roadbed of coarse-grained soil high roadbed first Scope, the uneven perfusion of binder materials in pipe (11) is ensured when laying transverse drain (5), and construction method is by transverse drain (5) angle of inclination 3% ~ 5%, pours into organic pitch, it is condensed in pvc drainpipes, and form certain current gradient.
2nd, longitudinal drainage pipe (8) is connected with transverse drain (5) by rubber ring interface (10), in longitudinal drainage pipe (8) open gradation rubble (7) and sand are filled around, prevents longitudinal drainage pipe (8) from extruding destruction under external force.
3rd, after the laying for completing drainage arrangement (4), anti-filter geotextiles (6) are laid, and apply 1cm sand bed in the above, It is fully filtered the ponding in soil matrix, and set interface laying anti-seepage geotextile (12) at the top of drainage arrangement (4).
4 and then to fill the fiber stirred above the anti-seepage geotextile (12) native (2), placement in layers and roll, simultaneously Ensure that anti-seepage geotextile (12) is located at the lower section of fiber native (2), deploy upwards in " stair " shape.
5th, it is last when tall earth fill platform toe is filled, in roadbed level away from laying retaining wall (3) toe 3m at, Retaining wall uses cantilever structure, maintenance to proceed filling and being compacted for coarse-grained soil after terminating.

Claims (4)

1. a kind of coarse-grained soil high-fill roadbed discharge structure and its construction technology, including:Roadbed (1), fiber native (2), retaining wall (3), drainage arrangement (4), transverse drain (5), anti-filter geotextiles (6), open gradation rubble (7), longitudinal drainage pipe (8), adverse current Valve (9), rubber ring interface (10), binder materials (11), anti-seepage geotextile (12);It is characterized in that, described fiber native (2) is by thick The native and a certain proportion of geotechnological hygroscopic fibre material of grain, which is blended, to be formed, and wherein hygroscopicity fibre quality is 0.2%;Described fibre Native (2) lower curtate laying anti-seepage geotextile (12) of dimension, only sets interface between longitudinal drainage pipe (8) and native (2) bottommost of fiber; Described interface laying anti-filter geotextiles (6).
2. a kind of coarse-grained soil high-fill roadbed discharge structure according to claim 1 and its construction technology, it is characterized in that, institute The drainage arrangement (4) stated is cuboid, and including open gradation rubble (7) and longitudinal drainage pipe (8), drainpipe uses high intensity Pvc double-wall corrugated pipes, nominal diameter is 110mm.
3. a kind of coarse-grained soil high-fill roadbed discharge structure according to claim 1 and its construction technology, it is characterized in that, institute Longitudinal drainage pipe (8) bottom stated is connected with transverse drain (5) by interface, and interface installs plastics reflux valve (9), horizontal Nominal diameter is used for 80mm high intensity pvc double-wall corrugated pipes to drainpipe (5).
4. a kind of coarse-grained soil high-fill roadbed discharge structure according to claim 1 and its construction technology, it is characterized in that, institute Binder materials (11) in the binder materials (11) stated actually organic pitch, transverse drain (5) is irrigated outside the venue, is led to Rubber ring interface (10) is crossed closely to connect transverse drain (5) and longitudinal drainage pipe (8).
CN201710411501.2A 2017-06-05 2017-06-05 Coarse-grained soil high-fill roadbed drainage structure and construction process thereof Active CN107178043B (en)

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CN201710411501.2A CN107178043B (en) 2017-06-05 2017-06-05 Coarse-grained soil high-fill roadbed drainage structure and construction process thereof

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Application Number Priority Date Filing Date Title
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203403426U (en) * 2013-08-13 2014-01-22 南昌工程学院 Supporting structure of expensive earth road cutting side slope
CN104727341A (en) * 2015-03-20 2015-06-24 重庆文理学院 Unidirectional water-permeable subgrade river side retaining wall
CN105155558A (en) * 2015-09-28 2015-12-16 华中科技大学 Combined retaining structure and construction method thereof
CN205012192U (en) * 2015-09-28 2016-02-03 安徽省交通规划设计研究总院股份有限公司 Be used for inside drainage system in highway sag vertical curve bottom road surface
CN106703050A (en) * 2016-11-30 2017-05-24 中铁二院昆明勘察设计研究院有限责任公司 Expansive soil road cutting side slope reinforced soil back-pressure seepage-preventive supporting structure and construction method thereof
CN206204970U (en) * 2016-11-29 2017-05-31 兰州理工大学 A kind of high fill foundation weeper drain

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203403426U (en) * 2013-08-13 2014-01-22 南昌工程学院 Supporting structure of expensive earth road cutting side slope
CN104727341A (en) * 2015-03-20 2015-06-24 重庆文理学院 Unidirectional water-permeable subgrade river side retaining wall
CN105155558A (en) * 2015-09-28 2015-12-16 华中科技大学 Combined retaining structure and construction method thereof
CN205012192U (en) * 2015-09-28 2016-02-03 安徽省交通规划设计研究总院股份有限公司 Be used for inside drainage system in highway sag vertical curve bottom road surface
CN206204970U (en) * 2016-11-29 2017-05-31 兰州理工大学 A kind of high fill foundation weeper drain
CN106703050A (en) * 2016-11-30 2017-05-24 中铁二院昆明勘察设计研究院有限责任公司 Expansive soil road cutting side slope reinforced soil back-pressure seepage-preventive supporting structure and construction method thereof

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