CN106835884A - A kind of permanent roadbed construction method of highly filled road - Google Patents

A kind of permanent roadbed construction method of highly filled road Download PDF

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Publication number
CN106835884A
CN106835884A CN201710000478.8A CN201710000478A CN106835884A CN 106835884 A CN106835884 A CN 106835884A CN 201710000478 A CN201710000478 A CN 201710000478A CN 106835884 A CN106835884 A CN 106835884A
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China
Prior art keywords
roadbed
construction method
layer
highly filled
permanent
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CN201710000478.8A
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Chinese (zh)
Inventor
祝川
唐华伟
谢杨
徐忠潮
肖昌怀
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ZHEJIANG FANHUA ENGINEERING SUPERVISION Co Ltd
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ZHEJIANG FANHUA ENGINEERING SUPERVISION Co Ltd
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Priority to CN201710000478.8A priority Critical patent/CN106835884A/en
Publication of CN106835884A publication Critical patent/CN106835884A/en
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    • 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

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Structures (AREA)

Abstract

The invention discloses a kind of permanent roadbed construction method of highly filled road, paved by pavement breaking, filling compaction, layering, pitch is poured, and implement monitoring.The present invention has advantages below and effect:By monitoring and detecting, and control corresponds to the opportunity of correction and the mode of correction so that work progress more specification, can preferably complete the construction of road, it is ensured that the service life of roadbed.

Description

A kind of permanent roadbed construction method of highly filled road
Technical field
The present invention relates to traffic engineering technical field, more particularly to a kind of permanent roadbed construction method of highly filled road.
Background technology
High-fill roadbed is mainly with slope height to divide, and has 12 meters or so sand high in the building course of roadbed Just it is referred to as high-fill roadbed during stone roadbed.The high-fill roadbed of China is main in expressway construction, and on some landform ground Looks are the road construction in hills location, and it is generally large that it builds difficulty, and because vehicle load and roadbed are originally experienced area , easily there are the phenomenons such as crack, sedimentation in influence.
The content of the invention
It is an object of the invention to provide a kind of Stability Analysis of Structures, the permanent subgrade construction side of highly filled road of sedimentation not easy to crack Method.
Above-mentioned technical purpose of the invention technical scheme is that:A kind of permanent roadbed of highly filled road Construction method, comprises the following steps:
A, road surface is crushed, treatment weeds, tree root, mud;Road surface depth is removed at least 30cm, roadbed is formed;
B, roadbed sedimentation place laying graded broken stone;
C, then filling compaction, filler are mainly argillaceous limestone layer, the stone containing a large amount of more than 10cm, in order to obtain effectively Compacting, filler maximum particle diameter is not preferably greater than 2/3 or 25cm of thickness, and otherwise the soil body should be made thinner, and ratchel is picked, and filler is strong Degree is not less than 15MPa;
D, then layering pave, and are paved using the cement, flyash and crushed stone layer of cement content 3.1%~3.9%, successively press Real, every layer of maximum loose laying depth cannot be greater than 40cm, and compaction requirement is not less than 96%, is intended to beat aspect before paving every time Sweep clean and keep moistening;
E, pave after the completion of carry out strong rammer to roadbed, hammer ram weight 20t, bottom surface form is circle, is fallen away from 10m, clicks energy It is 2000kNm, tamping point is arranged that tamping point spacing takes 5m, strong rammer reinforcement is carried out to tamping point, then carries out health by plum blossom-shaped;
After the completion of f, health, the uniform consumption that dispenses is the asphalt layer of 1.5Kg/m2, is then carried out with road roller immediately Roller-compaction;
Voidage is 3%~6% asphalt concrete layer on g, making.
By using above-mentioned technical proposal, filler pressure type is carried out using argillaceous limestone layer by by roadbed, then used again Pave 3.1~3.9% cement, flyash and crushed stone layer is layered, completion carries out strong rammer after paving with hammer ram, for road surface to be pressed It is real, two big layers are constituted into an organism, the phenomenon of dispersion and delamination is less prone to, the quality of roadbed is improved, then by supporting After life, roadbed is solidified again with asphalt layer, the asphalt concrete layer of last making 3%~6% is realized logical Car, it is with constitutionally stable configuration state and not easy to crack.
The further setting of the present invention is:In step f, after the completion of health, before asphalt layer is dispensed, laying one Geotechnical grid, then asphalt layer covering and higher than geotechnical grid.
By using above-mentioned technical proposal, after the completion of strong rammer, geotechnical grid is first spread, then toward dispensing oil on geotechnical grid Bitumen layer, on the one hand can be carried out spacing so that asphalt layer can only be down in infiltration to asphalt layer when dispensing The cement, flyash and crushed stone layer of layer is permeated so that is preferably organically combined, is on the other hand acted in concentrfated load Under, suffered power can be passed to transition region by the active region of the stress of geotechnical grid, but due to the laterally limiting and phase of cell compartment wall The reaction force of adjacent cell compartment, and asphalt layer dative locular wall frictional force form lateral resistance, it is suppressed that transition region with The transverse shifting tendency of passive area, so that the bearing capacity of roadbed is improved.
The further setting of the present invention is:Multiple through holes are distributed between the geotechnical grid.
By using above-mentioned technical proposal, through hole two cell compartment to a certain extent being distributed on the cell compartment wall of geotechnical grid Between asphalt layer connected, it is associated in holding structure.
The further setting of the present invention is:During health, lid sets a health preserving blanket, and carrying out spraying by sprinkling truck shines water, health Phase is no less than 7 hours.
By using above-mentioned technical proposal, by the spray on sprinkling truck, it is ensured that the cement fine coal after the completion of strong rammer The comprehensive moistening on the surface of ash broken stones layer, it is to avoid drying and watering cycle, it is to avoid the generation of the problem of cup shake occurs.
The further setting of the present invention is:Before construction, when running into soft soil base, first dug out soft soil roadbed with digging machine, The rendzinas of then back-filling in layers 8% is rolled, and compaction in layers thickness is no more than 20cm, and compactness is not less than 96%.
By using above-mentioned technical proposal, rendzinas has good plate body, can strengthen the structural strength at this, keeps away Exempt from soft soil base to be ftractureed in consequent effects road.
The further setting of the present invention is:In construction, periodic monitor roadbed, roadbed axial location, absolute altitude, the gradient are simultaneously remembered Record corresponding data, if there is crack, landslide, takes safeguard procedures.
By using above-mentioned technical proposal, by monitoring and detecting, and control corresponds to the opportunity of correction and the side of correction Formula so that work progress more specification, can preferably complete the construction of road, it is ensured that the service life of roadbed.
Brief description of the drawings
Fig. 1 is the schematic cross-sectional view of highly filled road;
In figure:1st, roadbed;2nd, argillaceous limestone layer;3rd, cement, flyash and crushed stone layer;4th, geotechnical grid;5th, asphalt layer; 6th, asphalt concrete layer.
Specific embodiment
The present invention is described in further detail below in conjunction with accompanying drawing.
A kind of permanent roadbed construction method of highly filled road, comprises the following steps:
A, by road surface with excavate machine gun hammer into shape crushed, carried out by bull-dozer and loading machine it is smooth, while treatment it is miscellaneous Grass, tree root, mud, and the rubbish such as fertile soil must be removed all, rubbish outward transport;Most road surface depth removes at least 30cm at last More than, roadbed 1 is formed, system-wide section carries out clear table on this basis;
B, before construction, when running into soft soil base, first dug out soft soil roadbed with digging machine, the lime of then back-filling in layers 8% Soil is rolled, and compaction in layers thickness is no more than 20cm, and compactness is not less than 96%, and settles place laying level with broken in roadbed 1 Stone, it is ensured that roadbed 1 must not have the phenomenons such as frost boiling, spring, peeling, wave, ponding, after being rolled with 12t~15t road rollers, wheelmark Depth is not more than 5mm;
C, then filling compaction, filler are mainly argillaceous limestone layer 2, the stone containing a large amount of more than 10cm, in order to be had Effect compacting, filler maximum particle diameter is not preferably greater than 2/3 or 25cm of thickness, and otherwise the soil body should be made thinner, and ratchel is picked, filler Intensity is not less than 15MPa;
When d, layering pave, paved using the cement, flyash and crushed stone layer 3 of cement content 3.1%~3.9%, the batch mixing exists In transportation, covered using canvas, place moisture and be too lost in;Then when being successively compacted, by vibratory roller, its shake The layer transmission of the dynamic pressure depth of convolution, compression compacted fill is produced to roadbed, every layer of maximum loose laying depth cannot be greater than 40cm, be compacted Degree requires to be not less than 96%, is intended to clean up aspect before paving every time and keeps moistening to avoid generation from wave occur or apply Work stitch, after starting to pave, paver should continuously pave, using two or the operation of Duo Tai pavers echelon, it is front and rear should ensure that at the uniform velocity, Paving thickness, coefficient of loose laying, crown slope, whole frequency will always, and longitudinal seam is smooth between adjacent two paver;
In cement, flyash and crushed stone layer 3 when paving, it is necessary to detect quality, monitoring project is as follows:
E, 1. heavy tamping energy convert cause soil property force compression and with soil body shake it is close (show as in the soil body gas discharge, Pore water pressure rises therewith);2. part liquefaction of soil mass or soil structures generation destruction (shows as original soil strength reduction Or the shearing strength reduction of the soil body);3. soil body discharging consolidation densification (shows as the change of soil body penetration performance, soil mass crack hair Exhibition stabilization, soil strength is improved);4. inside soil body thixotroping recovers and (shows as part Free water to become again with consolidation compacting Film water, the intensity of soil continues to improve therewith).
So that to the strong rammer that carries out of roadbed after the completion of to paving, hammer ram weight 20t, bottom surface form is circle, fall away from 10m, it can be 2000kNm to click, and tamping point is arranged that tamping point spacing takes 5m by plum blossom-shaped;Before starting to ram, tamping point peen is first measured Absolute altitude, then hammer ram is lifted to predetermined altitude, treat to fall behind under rammer unhooking, suspension hook is put down, peen absolute altitude is measured, complete for the first time Ram.After being rammed first pass tamping point, interval time to be achieved, then ram method by first pass and ram second time, the 3rd time tamping point. The low twice full bat of hammer is carried out after three times point is rammed into, requires that hammer ram hammering laps one another when completely ramming, forbid leakage to ram;Complete strong rammer Afterwards, also need to carry out strong rammer reinforcement to tamping point, fill again, tamping point is filled up.
Health is carried out, during health, lid sets a health preserving blanket, carrying out spraying by sprinkling truck shines water, and preserving period is no less than 7 Hour.
F, after the completion of health, before asphalt layer 5 is dispensed, lay a geotechnical grid 4, wherein geotechnical grid 4 is By the HDPE sheet materials strengthened, welded and a kind of three-dimensional netted cell compartment structure of formation through high-tenacity, and on each cell compartment wall Multiple through holes are offered, to connect cell compartment.After the completion of laying, asphalt layer 5 is dispensed with geotechnical grid 4, and be covered in Higher than geotechnical grid 4, asphalt 5 consumption of layer are 1.5Kg/m2, then carry out roller-compaction with road roller immediately;
G, it is last the asphalt concrete layer 6 for building that voidage is 3%~6% is repaved on asphalt layer 5, carry out Finish up smooth, last open to traffic.
The control of man-hour requirement implement stakeout is applied, to ensure that roadbed, the axial location of roadbed 1, absolute altitude, the gradient, physical dimension are accorded with Close and require, quality inspection standard table;
Specific embodiment is only explanation of the invention, and it is not limitation of the present invention, those skilled in the art The modification without creative contribution can be made to the present embodiment as needed after this specification is read, but as long as in this hair All protected by Patent Law in bright right.

Claims (6)

1. the permanent roadbed construction method of a kind of highly filled road, it is characterised in that:Comprise the following steps:
A, road surface is crushed, treatment weeds, tree root, mud;Road surface depth is removed at least 30cm, roadbed (1) is formed;
B, roadbed (1) sedimentation place laying graded broken stone;
C, then filling compaction, filler are mainly argillaceous limestone layer (2), the stone containing a large amount of more than 10cm, in order to obtain effectively Compacting, filler maximum particle diameter is not preferably greater than 2/3 or 25cm of thickness, and otherwise the soil body should be made thinner, and ratchel is picked, and filler is strong Degree is not less than 15MPa;
D, then layering pave, and are paved using cement, flyash and crushed stone layer (3) of cement content 3.1%~3.9%, successively press Real, every layer of maximum loose laying depth cannot be greater than 40cm, and compaction requirement is not less than 96%, is intended to beat aspect before paving every time Sweep clean and keep moistening;
E, pave after the completion of carry out strong rammer to roadbed, hammer ram weight 20t, bottom surface form is circle, is fallen away from 10m, and clicking to be 2000kNm, tamping point is arranged that tamping point spacing takes 5m, strong rammer reinforcement is carried out to tamping point, then carries out health by plum blossom-shaped;
After the completion of f, health, the uniform consumption that dispenses is 1.5Kg/m2Asphalt layer (5), then ground with road roller immediately It is molded;
Voidage is 3%~6% asphalt concrete layer (6) on g, making.
2. the permanent roadbed construction method of a kind of highly filled road according to claim 1, it is characterised in that:In step f, support After the completion of life, before asphalt layer (5) is dispensed, a geotechnical grid (4) is laid, then asphalt layer (5) is covered and high In geotechnical grid (4).
3. the permanent roadbed construction method of a kind of highly filled road according to claim 2, it is characterised in that:The geotechnical grid (4) multiple through holes are distributed between.
4. the permanent roadbed construction method of a kind of highly filled road according to claim 1, it is characterised in that:During health, lid sets One health preserving blanket, carries out spraying and shines water by sprinkling truck, and preserving period is no less than 7 hours.
5. the permanent roadbed construction method of a kind of highly filled road according to claim 1, it is characterised in that:Before construction, meet During to soft soil base, first dug out soft soil roadbed with digging machine, the rendzinas of then back-filling in layers 8% is rolled, and compaction in layers thickness is not More than 20cm, compactness is not less than 96%.
6. the permanent roadbed construction method of a kind of highly filled road according to claim 1, it is characterised in that:It is fixed in construction When monitoring roadbed, roadbed (1) axial location, absolute altitude, the gradient and record corresponding data, if there is crack, landslide, take protection Measure.
CN201710000478.8A 2017-01-02 2017-01-02 A kind of permanent roadbed construction method of highly filled road Pending CN106835884A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109024129A (en) * 2018-08-21 2018-12-18 华东建工集团有限公司 The compacted construction method of high-fill roadbed
CN109763397A (en) * 2019-03-11 2019-05-17 广东盛际工程咨询有限公司 Embedded structure bituminous pavement and construction method
CN110172980A (en) * 2019-06-19 2019-08-27 贵州正业工程技术投资有限公司 A kind of coarse grain block stone superelevation fill foundation ruggedized construction and its construction method
CN110241695A (en) * 2019-06-19 2019-09-17 贵州正业工程技术投资有限公司 A kind of gravelly soil superelevation fill foundation reinforcement means
CN110954074A (en) * 2019-12-16 2020-04-03 江苏科技大学 Highway construction quality detection method based on three-dimensional laser scanning technology
CN114411467A (en) * 2022-03-31 2022-04-29 山西机械化建设集团有限公司 Construction method of high-liquid limit soil filler high-fill skeleton stress and drainage system
CN116463906A (en) * 2023-05-22 2023-07-21 河北交投路桥建设开发有限公司 Construction process and quality control method of non-joint cement concrete pavement

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* Cited by examiner, † Cited by third party
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李弢: ""山区高速公路高填方路基质量控制"", 《科技风》 *
杨龙: ""高填方段永久路基施工监理的质量控制"", 《建设监理》 *
汪胜奇: ""强夯法在高填方路基施工中的应用"", 《山西建筑》 *
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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109024129A (en) * 2018-08-21 2018-12-18 华东建工集团有限公司 The compacted construction method of high-fill roadbed
CN109763397A (en) * 2019-03-11 2019-05-17 广东盛际工程咨询有限公司 Embedded structure bituminous pavement and construction method
CN109763397B (en) * 2019-03-11 2024-04-26 广东智铭设计有限公司 Asphalt pavement with embedded structure and construction method
CN110172980A (en) * 2019-06-19 2019-08-27 贵州正业工程技术投资有限公司 A kind of coarse grain block stone superelevation fill foundation ruggedized construction and its construction method
CN110241695A (en) * 2019-06-19 2019-09-17 贵州正业工程技术投资有限公司 A kind of gravelly soil superelevation fill foundation reinforcement means
CN110954074A (en) * 2019-12-16 2020-04-03 江苏科技大学 Highway construction quality detection method based on three-dimensional laser scanning technology
CN110954074B (en) * 2019-12-16 2024-04-19 江苏科技大学 Highway construction quality detection method based on three-dimensional laser scanning technology
CN114411467A (en) * 2022-03-31 2022-04-29 山西机械化建设集团有限公司 Construction method of high-liquid limit soil filler high-fill skeleton stress and drainage system
CN116463906A (en) * 2023-05-22 2023-07-21 河北交投路桥建设开发有限公司 Construction process and quality control method of non-joint cement concrete pavement
CN116463906B (en) * 2023-05-22 2023-10-13 河北交投路桥建设开发有限公司 Construction process and quality control method of non-joint cement concrete pavement

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