CN103161109A - Method for subgrade filling of peat soil subgrade by sea sand - Google Patents
Method for subgrade filling of peat soil subgrade by sea sand Download PDFInfo
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- CN103161109A CN103161109A CN2011104131291A CN201110413129A CN103161109A CN 103161109 A CN103161109 A CN 103161109A CN 2011104131291 A CN2011104131291 A CN 2011104131291A CN 201110413129 A CN201110413129 A CN 201110413129A CN 103161109 A CN103161109 A CN 103161109A
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Abstract
The invention relates to a subgrade filling method, and particularly relates to a subgrade filling method by using sea sand as a filling material. The method comprises the steps of laying-out a king pile and side piles, transporting the sea sand, paving a temporary transport service road, unloading materials, removing materials for the temporary transport service road after materials are loaded and unloaded, rough leveling with a bulldozer, fine leveling with a land leveler, watering to realize saturation, performing vibration rolling, measuring height, measuring the compaction degree, and performing the next sea sand soil subgrade construction after the compaction degree is qualified. The method can perform sea sand filling rapidly and efficiently and greatly increases construction efficiency. Quality of the subgrade is good after the construction, and quality of the soil slope is good.
Description
Technical field
The present invention relates to the roadbed filling method, relate in particular to and adopt extra large sand as the roadbed filling method of filling material.
Background technology
At present, wait city or island countries building highway for some temperate zones or the torrid zone coastal, the soil resource of subgrade construction use is deficienter, and it is fewer to meet the earth material of code requirement, can't carry out subgrade construction.Island country rainfall is larger, and even arranged 2 times rainy season in 1 year, makes earth roadbed filling construction very difficult.When soil is as soft soil roadbed filling material in addition, earth roadbed easy generation unequal settlement crack, particularly the peat soil ground adopts soil more easily to produce unequal settlement crack as roadbed filling, the processing of fracture is more difficult, and this crack cannot be disposed fully, can occur always and can't avoid at Constructing Subgrade.Consider and gather materials on the spot principle and reduce engineering cost, consider with extra large sand as roadbed embankment material.The sea sand as roadbed filling in the coastal area or island country utilized to greatest extent local resources, reduce and reduced environmental disruption, improved the roadbed filling speed of application, overcome the earth roadbed disadvantage that unequal settlement crack easily occurs, accelerated the construction speed of engineering, wide development space has been arranged.
Yet extra large sand is filling roadbed must utilize vehicle, such as dump truck, transporting it into filling a little of the scene of filling topples over, when filled height reached 1 meter left and right, dump truck can't travel on the extra large sand road base that fills, and its wheel can be absorbed in and having filled in the extra large sand of roadbed.
Summary of the invention
The present invention is intended to solve the problems of the technologies described above, and provides a kind of and adopts extra large sand the peat soil ground to be carried out the method for roadbed filling.The present invention can carry out quickly and efficiently extra large sand and fill, and greatly improves efficiency of construction.
For addressing the above problem, a kind ofly adopt extra large sand the peat soil ground to be carried out the method for roadbed filling, it comprises:
Step 1, construction lofting
After the substrate degree of compaction detects acceptance(check), according to route survey pilot point and bench mark, every 20 meters center line and sideline stake unwrapping wire that carry out roadbed, and survey establish in, the sideline pile beacon is high;
Step 2, extra large sand haul
From extra large sand stock ground with the extra large sand of dump truck transportation to the job site, plan in advance transit route, do not assign a traffic management assistant in the intersection of intervisibility in sighting distance, commander's vehicle safe passing;
Step 3, extra large sand discharging
Make material loading at each subgrade construction section with mountain skin soil and transport the ramp, provide mileage pile No. and survey data by the in-site measurement personnel to the site operation personnel, calculate required filler quantity by the site operation personnel according to survey data, carry out successively discharging by the section of filling one side direction opposite side, discharging is near roadbed longitudinal center;
Step 4 in time flattens with bulldozer, compacting;
Step 5, roadbed filling are transported sidewalk temporarily and are laid
After filled height surpasses 80cm, use mountain skin soil or stone flour to lay 1-2 interim transportation sidewalk on lower floor's roadbed, and pave and compacting, laying depth 7-15cm satisfies the current requirement of haulage vehicle;
Step 6, dump truck utilization are transported the extra large sand of sidewalk transportation to the assigned address discharging temporarily;
Step 7 will remove interim transportation sidewalk material before the sand of making sea, the thickness that remains in the interim transportation sidewalk material therefor on roadbed is not more than 5cm, and remove wherein particle diameter greater than the stone of 5cm;
Step 8, thick flat, smart flat
Adopt crawler type TG-140 bulldozer slightly flat, loose laying depth is controlled by 40cm ± 5cm, then with PY160B(or PY180) the land leveller essence puts down.
Step 9 is watered
At roadbed curb place with extra large sand built highly be not less than 15cm block the water band, adopt suction pump to carry out saturated watering, roadbed is divided into left and right two width by center line, two width water sequentially identical and carry out simultaneously, the direction of watering longitudinally therefrom mind-set roadbed both sides water, continuously watering judges until range estimation sand surface obvious water occurred at the curb place watering that reaches capacity, and then watering tube is moved to next construction area;
Step 10 rolls
Roadbed rolls the employing vibroroller cmpacting; Water range estimation when reaching capacity at extra large sand, begin to be with the water vibroroller cmpacting; Road roller to roll direction consistent with the direction of watering, when rolling, road roller comes and goes wheelmark, and overlapping to be not less than 1/3 steel wheel wide, presses that to have a lot of social connections fully be one time; The two steel wheel static pressure of 14t three times, 18t double-steel wheeled vibratory compacting three times;
Step 11, extra large sand road base fills detection, completes current layer and fills
Roll complete after, carry out degree of compaction by sand replacement method and detect, degree of compaction detect qualified after, this procedure finishes, if degree of compaction is inadequate, then the ftercompction of watering, until that degree of compaction detects is qualified; Degree of compaction detects frequency: the long two-way traffic of every 200m fills layer, with 4 degree of compaction of machine testing;
Step 12, repeating step five to 11 is completed filling of whole roadbed.
The process that the present invention removes interim transportation sidewalk material, bulldozer after by king-pile, skirt piles unwrapping wire, the transportation of extra large sand, the laying of transporting sidewalk, discharging, charging ﹠ discharging temporarily slightly flat, land leveller smartly flatly, saturated waters, vibroroller cmpacting, height measurement, degree of compaction detect, degree of compaction detects is qualified, carry out lower floor's sea sand road base construction, solve extra large sand road base and filled the problem that dump truck can't material loading, guaranteed carrying out smoothly of extra large sand road base filling construction, adopt extra large sand to carry out roadbed filling in the peat soil ground, improved the roadbed filling speed of application; Solve extra large sand road base and filled the problem that dump truck can't material loading, guaranteed carrying out smoothly of extra large sand road base filling construction.Construction technology of the present invention is simple, easy operating, and speed of application is fast; After roadbed filling, Subgrade Compaction Quality is relatively good, and the roadbed side slope quality is better, is not easy by rain drop erosion.
The specific embodiment
A kind ofly adopt extra large sand the peat soil ground to be carried out the method for roadbed filling, it comprises following operation:
1) construction lofting
After the substrate degree of compaction detects acceptance(check), according to route survey pilot point and bench mark, carry out center line and sideline stake (the super wide 50cm in the every limit) unwrapping wire of roadbed, survey is established in every 20 meters, the sideline pile beacon is high, namely in, the position absolute altitude in sideline.
2) extra large sand haul
From extra large sand stock ground with the extra large sand of dump truck transportation to the job site, plan in advance transit route, do not assign a traffic management assistant in the intersection of intervisibility in sighting distance, commander's vehicle safe passing.
3) roadbed filling transports the sidewalk laying temporarily
The roadbed of Hot work in progress is laid 1 or 2 interim transportation sidewalks, the quantity of determining to fill interim transportation sidewalk according to the roadbed filling width because dump truck is difficult to enter on roadbed.The construction of the current transportation of this dump truck sidewalk should be controlled according to following requirement:
Should use suitable material (mountain skin soil or stone flour) to fill and compacting by interim transportation sidewalk, laying depth 7-15cm satisfies the current requirement of haulage vehicle;
4) extra large sand discharging
In order to guarantee that dump truck is transported to the appointed place discharging of each section roadbed with filler, make material loading at each subgrade construction section with mountain skin soil and transport the ramp.Provide mileage pile No. and survey data by the in-site measurement personnel to the site operation personnel, calculate required filler quantity by the site operation personnel according to survey data, carry out successively discharging by the section of filling one side direction opposite side, discharging should be near roadbed longitudinal center, and in time flattens discharging with bulldozer.
5) remove interim transportation sidewalk material after charging ﹠ discharging
After completing the transportation of extra large sand, discharging, most interim transportation sidewalk will be removed before the sand of making sea, and any thickness that remains in the interim transportation sidewalk material therefor on roadbed is not more than 5cm, and remove particle diameter in the skin soil of mountain greater than the stone of 5cm.
6) thick flat, smart flat
Adopt crawler type TG-140 bulldozer slightly flat, loose laying depth is controlled by 40cm ± 5cm, then with PY160B(or PY180) the land leveller essence puts down.
7) water
At roadbed curb place with extra large sand built highly be not less than 15cm block the water band, prevent the loss of watering.Adopting suction pump to carry out saturated watering, is mainly to utilize suction pump manually to water in order, and roadbed is divided into left and right two width by center line.The two width order of watering is identical and carry out simultaneously, the direction of watering longitudinally therefrom mind-set roadbed both sides water.The water source is utilize along embankment both sides stream water or manually send water.The criterion of the watering amount of reaching capacity is continuous watering, until range estimation sand surface obvious water occurred at the curb place, then watering tube is moved to next construction area.Adopt 4 4.8KW water pumps to water 12 hours.
8) roll
Roadbed rolls and adopts saturated watering, vibroroller cmpacting.Water range estimation when reaching capacity at extra large sand, begin to be with the water vibroroller cmpacting.Road roller to roll direction consistent with the direction of watering, when rolling, road roller comes and goes wheelmark, and overlapping to be not less than 1/3 steel wheel wide, presses that to have a lot of social connections fully be one time.The two steel wheel static pressure of 14t 3 times, 18t double-steel wheeled vibratory compacting 3 times.
9) extra large sand road base fills detection
Roll complete after, carry out degree of compaction by sand replacement method and detect, degree of compaction detect qualified after, this procedure finishes, if degree of compaction is inadequate, then the ftercompction of watering, until that degree of compaction detects is qualified.Degree of compaction detects frequency: the long two-way traffic of every 200m fills layer, with 4 degree of compaction of machine testing.
Claims (1)
1. one kind is adopted extra large sand the peat soil ground to be carried out the method for roadbed filling, it is characterized in that, it comprises:
Step 1, construction lofting
After the substrate degree of compaction detected acceptance(check), according to route survey pilot point and bench mark, every 20 meters were carried out the center line of roadbed and the setting-out of sideline stake, and survey establish in, the absolute altitude of sideline stake;
Step 2, extra large sand haul
From extra large sand stock ground with the extra large sand of dump truck transportation to the job site, plan in advance transit route, do not assign a traffic management assistant in the intersection of intervisibility in sighting distance, commander's vehicle safe passing;
Step 3, extra large sand discharging
Make material loading at each subgrade construction section with mountain skin soil and transport the ramp, provide mileage pile No. and survey data by the in-site measurement personnel to the site operation personnel, calculate required filler quantity by the site operation personnel according to survey data, carry out successively discharging by the section of filling one side direction opposite side, discharging is near roadbed longitudinal center;
Step 4 in time flattens with bulldozer, compacting;
Step 5, roadbed filling are transported sidewalk temporarily and are laid
After filled height surpasses 80cm, use mountain skin soil or stone flour to lay 1-2 interim transportation sidewalk on lower floor's roadbed, and pave and compacting, laying depth 7-15cm satisfies the current requirement of haulage vehicle;
Step 6, dump truck utilization are transported the extra large sand of sidewalk transportation to the assigned address discharging temporarily;
Step 7 will remove interim transportation sidewalk material before the sand of making sea, the thickness that remains in the interim transportation sidewalk material therefor on roadbed is not more than 5cm, and remove wherein particle diameter greater than the stone of 5cm;
Step 8, thick flat, smart flat
Adopt crawler type TG-140 bulldozer slightly flat, loose laying depth is controlled by 40cm ± 5cm, then with PY160B(or PY180) the land leveller essence puts down
Step 9 is watered
At roadbed curb place with extra large sand built highly be not less than 15cm block the water band, adopt suction pump to carry out saturated watering, roadbed is divided into left and right two width by center line, two width water sequentially identical and carry out simultaneously, the direction of watering longitudinally therefrom mind-set roadbed both sides water, continuously watering judges until range estimation sand surface obvious water occurred at the curb place watering state that reaches capacity, and then watering tube is moved to next construction area;
Step 10 rolls
Roadbed rolls the employing vibroroller cmpacting; Water range estimation when reaching capacity at extra large sand, begin to be with the water vibroroller cmpacting; Road roller to roll direction consistent with the direction of watering, when rolling, road roller comes and goes wheelmark, and overlapping to be not less than 1/3 steel wheel wide, presses that to have a lot of social connections fully be one time; The two steel wheel static pressure of 14t three times, 18t double-steel wheeled vibratory compacting three times;
Step 11, extra large sand road base fills detection, completes current layer and fills
Roll complete after, carry out degree of compaction by sand replacement method and detect, degree of compaction detect qualified after, this procedure finishes, if degree of compaction is inadequate, then the ftercompction of watering, until that degree of compaction detects is qualified; Degree of compaction detects frequency: the long two-way traffic of every 200m fills layer, with 4 degree of compaction of machine testing;
Step 12, repeating step five to 11 is completed filling of whole roadbed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011104131291A CN103161109A (en) | 2011-12-13 | 2011-12-13 | Method for subgrade filling of peat soil subgrade by sea sand |
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| CN2011104131291A CN103161109A (en) | 2011-12-13 | 2011-12-13 | Method for subgrade filling of peat soil subgrade by sea sand |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107119520A (en) * | 2017-05-23 | 2017-09-01 | 广西交通规划勘察设计研究院有限公司 | The soft base combined type of coastal tidal, which is changed, fills out structure and Treatment Methods |
| CN108642997A (en) * | 2018-05-18 | 2018-10-12 | 中国二十二冶集团有限公司 | Auxiliary fills the device and method of rock ballast curb |
| CN109083122A (en) * | 2018-08-31 | 2018-12-25 | 中国二十冶集团有限公司 | The construction method of deep peat soil area construction operation platform |
| CN110670432A (en) * | 2019-09-09 | 2020-01-10 | 中国二十冶集团有限公司 | Roadbed construction method for soft foundation area in rainy period |
| CN112144338A (en) * | 2020-09-09 | 2020-12-29 | 中国二十冶集团有限公司 | Roadbed construction method of peat soil foundation |
| CN113737591A (en) * | 2021-10-21 | 2021-12-03 | 启东通启工程试验检测有限公司 | Construction method for filling highway subgrade by solidifying sea sand soil |
| CN114657831A (en) * | 2022-04-22 | 2022-06-24 | 交通运输部公路科学研究所 | Coastal fine sand roadbed rolling method |
| CN115787386A (en) * | 2022-11-01 | 2023-03-14 | 中国港湾工程有限责任公司 | Saturated watertight compaction construction process for graded broken stones |
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| CN101245574A (en) * | 2007-02-14 | 2008-08-20 | 中国神华能源股份有限公司 | Method for building over loading railway road-bed on salting ground |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107119520A (en) * | 2017-05-23 | 2017-09-01 | 广西交通规划勘察设计研究院有限公司 | The soft base combined type of coastal tidal, which is changed, fills out structure and Treatment Methods |
| CN108642997A (en) * | 2018-05-18 | 2018-10-12 | 中国二十二冶集团有限公司 | Auxiliary fills the device and method of rock ballast curb |
| CN109083122A (en) * | 2018-08-31 | 2018-12-25 | 中国二十冶集团有限公司 | The construction method of deep peat soil area construction operation platform |
| CN110670432A (en) * | 2019-09-09 | 2020-01-10 | 中国二十冶集团有限公司 | Roadbed construction method for soft foundation area in rainy period |
| CN110670432B (en) * | 2019-09-09 | 2021-07-27 | 中国二十冶集团有限公司 | Roadbed construction method for soft foundation area in rainy period |
| CN112144338A (en) * | 2020-09-09 | 2020-12-29 | 中国二十冶集团有限公司 | Roadbed construction method of peat soil foundation |
| CN113737591A (en) * | 2021-10-21 | 2021-12-03 | 启东通启工程试验检测有限公司 | Construction method for filling highway subgrade by solidifying sea sand soil |
| CN114657831A (en) * | 2022-04-22 | 2022-06-24 | 交通运输部公路科学研究所 | Coastal fine sand roadbed rolling method |
| CN115787386A (en) * | 2022-11-01 | 2023-03-14 | 中国港湾工程有限责任公司 | Saturated watertight compaction construction process for graded broken stones |
| WO2024092998A1 (en) * | 2022-11-01 | 2024-05-10 | 中国港湾工程有限责任公司 | Saturated-water vibrating compaction construction process for graded crushed stone |
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Application publication date: 20130619 |