CN108978385A - A kind of roadbed construction method on the road Tong Cun - Google Patents
A kind of roadbed construction method on the road Tong Cun Download PDFInfo
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- CN108978385A CN108978385A CN201810607697.7A CN201810607697A CN108978385A CN 108978385 A CN108978385 A CN 108978385A CN 201810607697 A CN201810607697 A CN 201810607697A CN 108978385 A CN108978385 A CN 108978385A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
- E01C3/04—Foundations produced by soil stabilisation
Abstract
A kind of roadbed construction method on the road Tong Cun, include the steps that earth work excavation, roadbed filling, compactness detection and roadbed trimming, implementation through the invention, the reserved design width of increasing is used in the subgrade construction on the road Tong Cun, for guaranteeing that there are enough compactnesss at embankment edge after modifying roadbed side slope, and the compactness after Subgrade Compaction is detected, it can be good at controlling the roadbed quality on the road Tong Cun, furthermore, also by using corresponding processing mode for various complicated construction environment, it is suitable for the construction on the various roads Tong Cun.
Description
Technical field
The invention belongs to pavement construction technical fields, and in particular to a kind of roadbed construction method on the road Tong Cun.
Background technique
Currently, more and more roads Tong Cun engineering is in each of China with the continuous implementation of the national road Tong Cun engineering
Start to be laid in district, but district location road conditions are often complex, especially in mountain area location, often encounter such as slope
Ground, nonirrigated farmland, paddy field, soak and the construction environment in the section that caves in, and the conventional construction method for common road
It can not often adapt to, accordingly, it is desirable to provide a kind of roadbed construction method on the road Tong Cun, in the subgrade construction on the road Tong Cun.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of roadbed construction methods on road Tong Cun.
The present invention is achieved by the following technical programs.
A kind of roadbed construction method on road Tong Cun provided by the invention, comprising the following steps:
S1, earth work excavate, and usage mining machine is excavated from top to bottom, and by gutter one in digging process
Sideline stake and gradient brush side slope secondary to excavate in place, set in time according to survey in digging process, and intercepting ditch etc. is performed before rainy season
Conveyance system guarantees the stability of side slope；
S2, roadbed filling are carried out filling construction to the roadbed after excavation, fill and paved using horizontal slice, be layered
Maximum depth of spread be no more than 30cm, embankment operation first paves with bull-dozer is layered and parallel, then is put down with land leveller essence, then makes
It is formed with heavy vibration roller final pressure, every layer of width for filling laying will exceed the design width of roadbed when placement in layers
50cm；
S3, compactness detection, detects the compactness of roadbed, when the compactness of roadbed is not less than 96%, enters
In next step, it if the compactness of roadbed is less than 96%, reuses heavy vibration roller and roadbed is rolled, until pressure
Solidity is not less than 96%；
S4, roadbed trimming carry out hand finish to the roadbed after compacting, remove corner, make that road bed is smooth, shoulder rib is whole
Together.
Further, in step sl, if construction section is weak loose rock matter cutting, using digging machine plus quartering hammer into
Row directly excavates, and the location that mechanical and manual type cannot be used directly to excavate is used with small-sized and standing side
Formula is excavated, and the ragstone road bed after excavation is made into the transverse drainage slope to two sides 2%~4%.
Further, in step sl, it if the cubic meter of stone after excavating meets roadbed filling requirement, is used using the building stones excavated
In roadbed filling.
Further, in step s 2, it before roadbed formally fills, selects not less than 100 meters reclamation districts as test section, leads to
It bankets after 5~8 layers initially filled and carries out test process, determine number of rolling, rolling speed, the loose laying depth of filler and most
The technological parameters such as good moisture content and mechanical combination, and orthogonal experiment Optimal Parameters are used, by testing data inspection declaration, through owner
The foundation for filling control after approval as other sections provides reference to subsequent construction.
Further, when being rolled in step sl using heavy vibration roller, pressure is then vibrated using first static pressure
It is real, it is fast after first slow, it vibrates the sequence of construction to grow from weak to strong and carries out.
Further, in step s 2, when the side slope of roadbed is greater than 20m, reinforcement measure need to be carried out to roadbed and is taken
The construction means of impact-rolling, Slope Treatment use the reinforcement measure of arched framework.
Further, in step s 2, the section relatively thin for the loose grounds coating such as hillside fields, nonirrigated farmland, need to be to roadbed model
Roadbed in enclosing is backbreak, and is then tamped substrate and is then backfilled dank material and grinding compacting；It is hollow for paddy field, ponding
The sections such as ground should drain ponding, after soft modeling soil is all excavated, dry to substrate, after drying and tamping, filled out using embankment
Material and dank material backfill and grinding compacting.
Further, in step s 2, if the section of construction is when caving in section, first to remove the loose cunning on landslide area periphery
Kinetoplast, while slowing down side slope, and in landslide area's circumference setting row, intercept water system, to it is larger, can not be fully erased collapse
Square area, setting guiding canal or channel, dredge landslide area, loose media are avoided to accumulate in roadbed side.
The beneficial effects of the present invention are: implementation through the invention, it is pre- using increasing in the subgrade construction on the road Tong Cun
Design width is stayed, for guaranteeing that there are enough compactnesss at embankment edge after modifying roadbed side slope, and the compacting after Subgrade Compaction
Degree is detected, and can be good at controlling the roadbed quality on the road Tong Cun, in addition, also by being directed to various complicated construction rings
Border uses corresponding processing mode, is suitable for the construction on the various roads Tong Cun.
Specific embodiment
Be described further below technical solution of the present invention, but claimed range be not limited to it is described.
A kind of roadbed construction method on the road Tong Cun, comprising the following steps:
S1, earth work excavate, and usage mining machine is excavated from top to bottom, and by gutter one in digging process
Sideline stake and gradient brush side slope secondary to excavate in place, set in time according to survey in digging process, and intercepting ditch etc. is performed before rainy season
Conveyance system guarantees the stability of side slope；
S2, roadbed filling are carried out filling construction to the roadbed after excavation, fill and paved using horizontal slice, be layered
Maximum depth of spread be no more than 30cm, embankment operation first paves with bull-dozer is layered and parallel, then is put down with land leveller essence, then makes
It is formed with heavy vibration roller final pressure, every layer of width for filling laying will exceed the design width of roadbed when placement in layers
50cm；
S3, compactness detection, detects the compactness of roadbed, when the compactness of roadbed is not less than 96%, enters
In next step, it if the compactness of roadbed is less than 96%, reuses heavy vibration roller and roadbed is rolled, until pressure
Solidity is not less than 96%；
S4, roadbed trimming carry out hand finish to the roadbed after compacting, remove corner, make that road bed is smooth, shoulder rib is whole
Together.
Further, in step sl, if construction section is weak loose rock matter cutting, using digging machine plus quartering hammer into
Row directly excavates, and the location that mechanical and manual type cannot be used directly to excavate is used with small-sized and standing side
Formula is excavated, and the ragstone road bed after excavation is made into the transverse drainage slope to two sides 2%~4%.
Further, in step sl, it if the cubic meter of stone after excavating meets roadbed filling requirement, is used using the building stones excavated
In roadbed filling.
Further, in step s 2, it before roadbed formally fills, selects not less than 100 meters reclamation districts as test section, leads to
It bankets after 5~8 layers initially filled and carries out test process, determine number of rolling, rolling speed, the loose laying depth of filler and most
The technological parameters such as good moisture content and mechanical combination, and orthogonal experiment Optimal Parameters are used, by testing data inspection declaration, through owner
The foundation for filling control after approval as other sections provides reference to subsequent construction.
Further, when being rolled in step sl using heavy vibration roller, pressure is then vibrated using first static pressure
It is real, it is fast after first slow, it vibrates the sequence of construction to grow from weak to strong and carries out.
Further, in step s 2, when the side slope of roadbed is greater than 20m, reinforcement measure need to be carried out to roadbed and is taken
The construction means of impact-rolling, Slope Treatment use the reinforcement measure of arched framework.
Further, in step s 2, the section relatively thin for the loose grounds coating such as hillside fields, nonirrigated farmland, need to be to roadbed model
Roadbed in enclosing is backbreak, and is then tamped substrate and is then backfilled dank material and grinding compacting；It is hollow for paddy field, ponding
The sections such as ground should drain ponding, after soft modeling soil is all excavated, dry to substrate, after drying and tamping, filled out using embankment
Material and dank material backfill and grinding compacting.
Further, in step s 2, if the section of construction is when caving in section, first to remove the loose cunning on landslide area periphery
Kinetoplast, while slowing down side slope, and in landslide area's circumference setting row, intercept water system, to it is larger, can not be fully erased collapse
Square area, setting guiding canal or channel, dredge landslide area, loose media are avoided to accumulate in roadbed side.
It is further described below with reference to specific construction technology.
Preparation of construction, construction carry out the repetition measurement of conducting wire, middle line, bench mark first before going into operation, according to construction drawing design, to this
Road measures setting-out, carries out the construction line-putting, the pile No. along obvious, relatively-stationary site marking by every 20m.It releases
Point, terminal, roadbed middle line, sideline print off route excavating sideline with white pulverized limestone, and villagers' committee is invited to ask excavating sideline land occupation
Topic is solved, it is ensured that not because land occupation problem influences construction.
1, earth excavation sequence of construction
Construction survey unwrapping wire → loading machine cleaning surface soil → loading machine bulldoze with product soil → excavator or loading machine charging →
Dump truck haul → trimming side slope → leveling repairs roadbed → inspection absolute altitude, size → roadbed molding → examination
2, rock excavation sequence of construction
Construction survey setting-out → removing surface soil → emplacement is laid and examination & approval → machine drilling → explosive inspection → test
→ blasthole inspection and powder charge simultaneously install explosive → set security isolation hilllock → blast hole stemming → withdraw people, animal in the area Shi Bao → rise
It is quick-fried → to check that processing miso-fire → removing side slope danger stone → releasing is guarded against → measures demolition effect → excavator cooperation dump truck fortune
Roadbed → roadbed molding → examination is repaired in stone → trimming side slope and product stone → leveling.
3, roadbed filling sequence of construction
Preparation of construction (surveying and locating, construction equipment march into the arena preparation, testing equipment and filler experiment) → cleaning and pick except →
Prepare compacting → measurement earth's surface compactness → excavator before filling out or loading machine takes filler → dump truck haul → layering and paves
→ road roller fills compacting → detection compactness → inspection absolute altitude, size → roadbed molding → examination.
3.1 earth works excavate
1. Tetranychus turkestani excavation is excavated from top to bottom using little Song pc220 digging machine, it must not disorderly dig and backbreak, forbid to feel out
It excavates, must assure that stability of slope after excavation.In digging process, gutter is once excavated in place.In digging process in time
The sideline stake and gradient brush side slope set according to survey, and the conveyance systems such as intercepting ditch are performed before rainy season, guarantee the stability of side slope.
In digging process, forbid what will be excavated to loosen the soil, throwing is on former roadbed.Such as water in digging process, the row of taking should lead in time
Measure introduces the water into gutter.This engineering is required according to design drawing, road excavation major part effective width 5m, and a small amount of roadbed is wide
Degree is in 4m-4.5m.
2. cubic meter of stone section adds quartering hammer directly to excavate weak loose rock matter cutting using digging machine, for that cannot use machine
Tool or the cubic meter of stone location manually directly excavated are used excavates in such a way that small-sized and standing is main explosion, the cubic meter of stone after excavation
Meet the roadbed filling that is used for of roadbed filling requirement, the side slope after rock excavation reaches straight, round and smooth, and big face is smooth.After excavation
Ragstone road bed be made into the transverse drainage slope to two sides 2%~4%, and accomplish that road bed is smooth, shoulder rib is neat.
3. Special Roadbed is handled: if house, graveyard, side high slope another side are that ground type, the width of subgrades such as steep cliff can not
Meet 4.5m, in digging process, each side that taken part in building can appropriate adjustment width of subgrade after making an on-the-spot survey on the spot.
3.2 roadbed filling
3.2.1 test section is constructed
Before roadbed formally fills, select not less than 100 meters of reclamation districts as test section.Pass through 5~8 layers initially filled
It bankets and carries out test process, determine that the techniques such as number of rolling, rolling speed, the loose laying depth of filler and optimum moisture content are joined
Several and mechanical combination etc..Using orthogonal experiment Optimal Parameters, by testing data inspection declaration, as other after owner ratifies
Fill the foundation of control, guiding construction in section.
3.2.2 general subgrade fills
General earthfill road embankment strictly bankets absolute altitude by the filling height hierarchical control of roadbed center.Fill using horizontal slice into
Row paves, and the parameters of construction technology and design requirement provided according to test section is constructed.The maximum depth of spread of layering is no more than
30cm.Embankment operation is first paved with bull-dozer is layered and parallel, then flat with land leveller essence, and the molding of heavy vibration roller final pressure is ground
Pressure adheres to vibrating compacting after first static pressure, fast after first slow, the principle to grow from weak to strong.Filler carries out water content detection before filling, no
It is handled when being suitble to using the method for watering or sunning.Compactness detection uses sand replacement method, core cutter method or nucleon according to soil property situation
Instrument method.Every layer of width for filling laying will guarantee embankment side after finishing roadbed side slope beyond design width 50cm when placement in layers
Edge has enough compactnesss.
3.2.3 high-fill roadbed
Roadbed of the embankment side slope greater than 20m is high-fill roadbed, need to carry out special construction.Roadbed treatment reinforcement measure is taken
Impact-rolling, Slope Treatment use the reinforcement measure of arched framework.For the monolithic stability for guaranteeing embankment and ground.High-filled embankment
Location utilizes high quality filler, using step-shaped slope, and reinforces side slope protection.
A, gravelly soil, sandy soil, the rubble etc. during roadbed filling preferentially using preferable gradation fill, and are pressed using heavy type
Road machine is rolled, it is ensured that compactness meets design and code requirement.
B, slope surface fills protection using sash grass planting, and water-proof strip is arranged in the sash of sash grass planting safeguard structure, first
Platform lateral sulcus is set at grade platform slope foot, reduces water flow and slope surface is washed away.
C, according to lateral slope of ground, the stability of the enhancing embankment such as abrupt slope spats, short retaining wall is respectively adopted.
D, inspection ladder access need to be arranged in high filling section, and section of the length less than 100m is greater than in one of section center setting
The section of 100m, every 50m setting is together.
3.2.4 low to fill out shallow cut subgrade construction
The low shallow cut section bed depth that needs to satisfy the need of filling out is backbreak, and backfill using dank material and grinding compacting.
Concrete construction method and measure are as follows:
Substrate is tamped after backbreaking within the scope of roadbed in the section relatively thin for the loose grounds coating such as hillside fields, nonirrigated farmland
Then backfill dank material and grinding compacting；For sections such as paddy field, soaks, due to excessive moisture, foundation soil one
It is soft-plastic state in depthkeeping degree, ponding should be drained, after soft modeling soil is all excavated, substrate is dried, after drying and tamping,
Using embankment fill material and dank material backfill and grinding compacting.
3.2.5 Bridgehead by Blastig is constructed
Bridgehead by Blastig construction: the backfill range of the works platform back such as bridge platform back and culvert channel and water penetration material used
Material is carried out by the instruction of drawing and supervising engineer.It bankets and other fillers takes placement in layers, every layer of loose laying depth is no more than
20cm, loose laying depth is not more than 15cm when using small machine.It in being backfilling and compacted construction, is symmetrically backfilling and compacted, and keeps
Works is intact.It is compacted within soil filled on the top of culvert 50cm using light-duty static load road roller.Heavy machine can be passed through more than the side 50cm
Tool and automobile.
The construction of 3.3 Special Roadbeds
Special Roadbed construction includes shallow failure roadbed, landslide section roadbed and special rock soil (weak soil) subgrade construction
Deng.
3.3.1 shallow failure subgrade construction
It is handled using the method excavated sliding soil mass, barricade is arranged, slows down side slope, and timely carries out earth's surface row
Water, slope protection and greening measure, it is ensured that stability of slope.
3.3.2 cave in section subgrade construction
The loose slide mass for removing landslide area periphery, while slowing down side slope, and in landslide area's circumference setting row, intercepting water is
System reduces influence of the surface water to landslide area.To larger, can not be fully erased landslide area, setting guiding canal or channel,
Landslide area is dredged, loose media is avoided to accumulate in roadbed side.
3.3.3 special rock soil subgrade construction
Mainly in such a way that soft base is changed and filled out.
(1) cushion is used when weak soil thickness is less than 50cm, first removes weak soil thoroughly, hard broken of backfill 50cm
Stone, slabstone are as backfill material.
(2) part is changed when filling out, fully erased weak soil, and divides bench excavation to solid ground side, and step width is not less than
2m, step surface introversion, slope angle 4%.
(3) it below level of ground water or is subject to the position of surface water, rain drop erosion, not use mud stone, shale and its waste
Expect as backfill.Gutter is set in roadbed one or both sides in time after backfill.
Claims (8)
1. a kind of roadbed construction method on the road Tong Cun, it is characterised in that the following steps are included:
S1, earth work excavate, and usage mining machine is excavated from top to bottom, and once opens in gutter in digging process
It digs in place, in time according to surveying the sideline set stake and gradient brush side slope in digging process, and it is mating to perform before rainy season intercepting ditch etc.
Engineering guarantees the stability of side slope；
S2, roadbed filling are carried out filling construction to the roadbed after excavation, fill and paved using horizontal slice, layering is most
Big paving thickness is no more than 30cm, and embankment operation is first paved with bull-dozer is layered and parallel, then flat with land leveller essence, then using weight
The molding of type vibrated roller final pressure, every layer of width for filling laying will exceed the design width 50cm of roadbed when placement in layers；
S3, compactness detection, detects the compactness of roadbed, and when the compactness of roadbed is not less than 96%, entrance is next
Step, if the compactness of roadbed is less than 96%, reuses heavy vibration roller and rolls to roadbed, until compactness
Not less than 96%；
S4, roadbed trimming carry out hand finish to the roadbed after compacting, remove corner, make that road bed is smooth, shoulder rib is neat.
2. the roadbed construction method on the road Tong Cun as described in claim 1, it is characterised in that: in step sl, if construction section
When for weak loose rock matter cutting, directly excavated using digging machine plus quartering hammer, for mechanical and artificial side cannot be used
The location that formula is directly excavated is used is excavated in a manner of small-sized and standing, and by the ragstone road bed after excavation
It is made into the transverse drainage slope to two sides 2%~4%.
3. the roadbed construction method on the road Tong Cun as described in claim 1, it is characterised in that: in step sl, if after excavating
The cubic meter of stone meets roadbed filling requirement, then is used for roadbed filling using the building stones excavated.
4. the roadbed construction method on the road Tong Cun as described in claim 1, it is characterised in that: in step s 2, roadbed is formally filled out
Before building, select to banket by 5~8 layers initially filled as test section not less than 100 meters of reclamation districts and carry out test process,
It determines technological parameters and the mechanical combinations such as number of rolling, rolling speed, the loose laying depth of filler and optimum moisture content, and uses
Testing data inspection declaration is filled the foundation of control, to rear by orthogonal experiment Optimal Parameters after owner ratifies as other sections
Continuous construction provides reference.
5. the roadbed construction method on the road Tong Cun as described in claim 1, it is characterised in that: use heavy-duty shocks in step sl
It is fast after first slow using the then vibrating compacting of first static pressure when road roller is rolled, it vibrates the sequence of construction to grow from weak to strong and carries out.
6. the roadbed construction method on the road Tong Cun as described in claim 1, it is characterised in that: in step s 2, when the side of roadbed
When slope is greater than 20m, reinforcement measure need to be carried out to roadbed and take the construction means of impact-rolling, Slope Treatment uses arched framework
Reinforcement measure.
7. the roadbed construction method on the road Tong Cun as described in claim 1, it is characterised in that: in step s 2, for hillside fields, drought
The relatively thin section of the loose grounds coating such as ground, need to backbreak to the roadbed within the scope of roadbed, then tamp substrate and then backfill
Dank material and grinding compacting；For sections such as paddy field, soaks, ponding should be drained, after soft modeling soil is all excavated,
Substrate is dried, after drying and tamping, using embankment fill material and dank material backfill and grinding compacting.
8. the roadbed construction method on the road Tong Cun as described in claim 1, it is characterised in that: in step s 2, such as road of construction
When section is landslide section, the loose slide mass on landslide area periphery is first removed, while slowing down side slope, and is arranged in landslide area's circumference
Arrange, intercept water system, to larger, can not be fully erased landslide area, setting guiding canal or channel are dredged landslide area, are avoided
Loose media is accumulated in roadbed side.
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| CN109441114A (en) * | 2018-12-26 | 2019-03-08 | 首钢水城钢铁(集团)赛德建设有限公司 | A kind of method for constructing terrace |
| CN110845183A (en) * | 2019-11-12 | 2020-02-28 | 中国十七冶集团有限公司 | Dolomite gravel soil roadbed filler based on orthogonal test design and construction process |
| CN110983889A (en) * | 2019-12-04 | 2020-04-10 | 中国十七冶集团有限公司 | Leveling construction method of land leveler in roadbed construction |
| CN111893827A (en) * | 2020-08-05 | 2020-11-06 | 中交上海航道局有限公司 | Construction process of urban trunk road |
| CN112227123A (en) * | 2020-10-23 | 2021-01-15 | 中民集团第二工程有限公司 | Construction method for backfilling road subgrade by matching excavator |
| CN113944078A (en) * | 2021-09-16 | 2022-01-18 | 湖北鸿运万鑫建筑工程有限公司 | Road construction method for municipal engineering |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109441114A (en) * | 2018-12-26 | 2019-03-08 | 首钢水城钢铁(集团)赛德建设有限公司 | A kind of method for constructing terrace |
| CN110845183A (en) * | 2019-11-12 | 2020-02-28 | 中国十七冶集团有限公司 | Dolomite gravel soil roadbed filler based on orthogonal test design and construction process |
| CN110983889A (en) * | 2019-12-04 | 2020-04-10 | 中国十七冶集团有限公司 | Leveling construction method of land leveler in roadbed construction |
| CN111893827A (en) * | 2020-08-05 | 2020-11-06 | 中交上海航道局有限公司 | Construction process of urban trunk road |
| CN112227123A (en) * | 2020-10-23 | 2021-01-15 | 中民集团第二工程有限公司 | Construction method for backfilling road subgrade by matching excavator |
| CN113944078A (en) * | 2021-09-16 | 2022-01-18 | 湖北鸿运万鑫建筑工程有限公司 | Road construction method for municipal engineering |
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Application publication date: 20181211 |
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| RJ01 | Rejection of invention patent application after publication |