CN105297572B - A kind of ever-frozen ground embankment construction method - Google Patents
A kind of ever-frozen ground embankment construction method Download PDFInfo
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- CN105297572B CN105297572B CN201510649541.1A CN201510649541A CN105297572B CN 105297572 B CN105297572 B CN 105297572B CN 201510649541 A CN201510649541 A CN 201510649541A CN 105297572 B CN105297572 B CN 105297572B
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Abstract
The invention discloses a kind of ever-frozen ground embankment construction method, Specific construction flow is preparation of construction, surveying and locating, place cleaning, smooth compacting, embankment, placement in layers water-permeable material, grinding compacting, non-full jelly subgrade construction and freezes subgrade construction entirely, self-test is carried out after the completion of per procedure in time, inspection declaration after qualified, qualified Fang Houke is examined to carry out next procedure construction through supervising engineer.The inventive method is directed to Permafrost Area roadbed frost damage Producing reason, with reference to existing ever-frozen ground region construction experience, the approach risen by the infiltration and capillary water that separate the surface water, so as to lowering of watertable, the initial moisture content in roadbed filling is reduced, is allowed to be maintained near optimum moisture content, so as to cut off the water supply source during poly- ice, and then it is effective prevent due in construction filling material and technique it is unreasonable caused by roadbed frost damage, ensure the road quality after being open to traffic.
Description
Technical field
The present invention relates to roadbed construction field, specifically a kind of ever-frozen ground embankment construction method.
Background technology
Permafrost Area roadbed frost damage so that road or railway build can shortly produce part way occur frost heave and
Frost boiling phenomenon, because the approach that the infiltration of the surface water and the water of underground are risen by capillary so that in roadbed filling
Water content increase, so as to cause that roadbed frost damage is produced in the case of bad environments, the transport to road and railway causes pole
Big harmfulness.
The content of the invention
It is an object of the invention to provide a kind of ever-frozen ground embankment construction method, to solve to propose in above-mentioned background technology
The problem of.
To achieve the above object, the present invention provides following technical scheme：
A kind of ever-frozen ground embankment construction method, Specific construction flow are：
（1）Preparation of construction：Before subgrade construction goes into operation, it should enter on the basis of comprehensive understanding design requirement and design are told somebody what one's real intentions are
Row field investigation and verification；Temporary project is built, to meet normal construction needs；
（2）Surveying and locating：Carry out in-situ FTIR spectroelectrochemitry and route, include the repetition measurement of wire, center line, the repetition measurement of bench mark with
Set up, central line lofting and roadbed setting-out；
（3）Place cleaning：The debris in the range of roadbed is removed, is pushed away according to the elevation for surveying work setting-out except product soil, reaches design
After elevation, rolled with road roller to design code degree of compaction standard；
（4）Smooth compacting：Cohesive soil, sandy soil substrate section, excavate former foundation soil by on-site actual situations, change and fill out rubble
And compaction in layers, ensure compactness under the groove of road；
（5）Embankment：1. for filled height less than 80cm locations, it, which handles depth, must reach 89cm under structure sheaf；②
Vegetation, fertile soil and the tree root in the range of roadbed substrate are removed by design requirement；3. low-lying wet ＆ soft subgrade substrate sets 3~4% slopes
The permeable isolating of degree, effective thickness determine according to actual conditions, silt layer of setting up defences up and down；4. according to the tool of landform and level of ground water
Body situation, deepen gutter, and satisfactory longitudinal sewer and horizontal sewer are excavated under gutter；5. with sand mortar flag stone
Build sewer basis by laying bricks or stones, form 3~4% gradient；6. laying drainage geotextiles to be so that rubble all to be wrapped up in sewer, top surface and connect
Head overlap joint more than 20cm；
（6）Placement in layers water-permeable material：Insert sewer material, sewer filling material is using must weed out fine grained and dust
Rubble；
（7）Grinding compacting：After the completion of longitudinal sewer and horizontal sewer, by the leveling of roadbed bottom, simultaneously flattening-out is closely knit, and compactness reaches
To more than 93%, and form the word or open roof that the gradient is 3~4%；
（8）Non- full jelly subgrade construction：1. placement in layers is carried out according to the different soil property of frost heave, should by the strong soil of frost resistance
Fill out in high-rise position, and control filled slope, every layer of top surface should keep the draining horizontal wall inscription not less than 2.5% during banketing, and often lamination is real
Side is no more than 20cm, and square thickness is no less than 0.5cm to same soil property in fact；2. being flattened with pressure ground machine, then rolled with roller, first
It is fast after slow, shaken to shaking by force by weak, rolled from outside to inner side, roll the general overlapping 0.4~0.5m of joint vibration road roller；Vibration
The overlapping 1/2 trailing wheel width of roller, the two neighboring construction section successively constructed, 1.0~1.5m of region longitudinal overlap is rolled, pressed
Real pass is determined by test section；
（9）It is complete to freeze subgrade construction：The construction of full jelly roadbed filling section freezes the execution of roadbed related content entirely by non-,
1. freeze entirely under the gutter of embankment section both sides or gutter peripheral hardware draining sewer, sewer buried depth freeze not less than local minimum
Depth, sewer longitudinal slope are not less than 0.5%, and length is not more than 300m, and sewer is long should to set transverse drainage sewer therebetween；
2. sewer anti-filter draining filler uses the gravel material of particle size uniformity, it is not less than 0.15m per layer depth, most
Big particle diameter is not more than 80mm；Or using infiltration geotextiles in fill out 10~60mm rubbles, gravel draining is gathered materials, outside fill out 0.15m thickness
Medium-fine sand stain-proofing layer；
Filter well is set to exclude the moisture in roadbed under the conditions of without flat drainage 3. freezing embankment entirely, filter well is located at gutter
Outside, when having pervious bed under roadbed in the range of road surface or under gutter；Infiltration well depth is generally higher than 3m, and pervious bed is embedding shallower
Filter well bottom surface preferably extend pervious bed；A diameter of 1.0~the 1.5m of filter well, well is interior successively to fill loaded filter from periphery to center
Material；
（10）Self-test is carried out after the completion of per procedure in time, qualified rear inspection declaration, qualified Fang Houke is examined through supervising engineer
Carry out next procedure construction.
As the further scheme of the present invention：The step（8）In non-complete freeze subgrade construction, high roadbed road of giving priority in arranging for
Section construction, to ensure the sedimentation time of 6 months；Strength operation is carried out if it can not meet time requirement because of duration limitation, is accelerated
Sedimentation.
Compared with prior art, the beneficial effects of the invention are as follows：The inventive method is produced for Permafrost Area roadbed frost damage
The reason for raw, with reference to existing ever-frozen ground region construction experience, the way risen by the infiltration and capillary water that separate the surface water
Footpath, so as to lowering of watertable, the initial moisture content in roadbed filling is reduced, is allowed to be maintained near optimum moisture content, so as to
Cut off the water supply source during poly- ice, so it is effective prevent due in construction filling material and technique it is unreasonable caused by road
Base frost heave, ensure the road quality after being open to traffic.
Embodiment
Below in conjunction with the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely retouched
State, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.Based on the present invention
In embodiment, the every other implementation that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example, belongs to the scope of protection of the invention.
A kind of flow chart of ever-frozen ground embankment construction method, Specific construction flow are：
（1）Preparation of construction：Before subgrade construction goes into operation, it should enter on the basis of comprehensive understanding design requirement and design are told somebody what one's real intentions are
Row field investigation and verification；Temporary project is built, to meet normal construction needs；
（2）Surveying and locating：Carry out in-situ FTIR spectroelectrochemitry and route, include the repetition measurement of wire, center line, the repetition measurement of bench mark with
Set up, central line lofting and roadbed setting-out；
（3）Place cleaning：The debris in the range of roadbed is removed, is pushed away according to the elevation for surveying work setting-out except product soil, reaches design
After elevation, rolled with road roller to design code degree of compaction standard；
（4）Smooth compacting：Cohesive soil, sandy soil substrate section, excavate former foundation soil by on-site actual situations, change and fill out rubble
And compaction in layers, ensure compactness under the groove of road；
（5）Embankment：1. for filled height less than 80cm locations, it, which handles depth, must reach 89cm under structure sheaf；②
Vegetation, fertile soil and the tree root in the range of roadbed substrate are removed by design requirement；3. low-lying wet ＆ soft subgrade substrate sets 3~4% slopes
The permeable isolating of degree, effective thickness determine according to actual conditions, silt layer of setting up defences up and down；4. according to the tool of landform and level of ground water
Body situation, deepen gutter, and satisfactory longitudinal sewer and horizontal sewer are excavated under gutter；5. with sand mortar flag stone
Build sewer basis by laying bricks or stones, form 3~4% gradient；6. laying drainage geotextiles to be so that rubble all to be wrapped up in sewer, top surface and connect
Head overlap joint more than 20cm；
（6）Placement in layers water-permeable material：Insert sewer material, sewer filling material is using must weed out fine grained and dust
Rubble；
（7）Grinding compacting：After the completion of longitudinal sewer and horizontal sewer, by the leveling of roadbed bottom, simultaneously flattening-out is closely knit, and compactness reaches
To more than 93%, and form the word or open roof that the gradient is 3~4%；
（8）Non- full jelly subgrade construction：
1. carrying out placement in layers according to the different soil property of frost heave, the strong soil of frost resistance should be filled out in high-rise position, and is controlled
Filled slope, every layer of top surface should keep the draining horizontal wall inscription not less than 2.5%, the steeper section of horizontal wall inscription, using mortar flag stone during banketing
Spats, ensure subgrade stability；Often lamination reality side is no more than 20cm, and square thickness is no less than 0.5cm to same soil property in fact；
The water content of same layer soil should be consistent, maximum allowable offset 2%；
The necessary uniformity of same layer fill compaction degree, it is allowed to deviation 2%；
2. being flattened with pressure ground machine, then rolled with roller, it is fast after first slow, shaken to shaking by force by weak, ground from outside to inner side
Pressure, roll the general overlapping 0.4~0.5m of joint vibration road roller；The overlapping 1/2 trailing wheel width of roller is vibrated, is successively constructed
Two neighboring construction section, rolls 1.0~1.5m of region longitudinal overlap, and compacting counting is determined by test section；
High filling section of giving priority in arranging for is constructed, to ensure the sedimentation time of 6 months；Such as because duration limitation can not meet the time
It is required that then carry out strength operation, Accelerated subsidence；
（9）It is complete to freeze subgrade construction：The construction of full jelly roadbed filling section freezes the execution of roadbed related content entirely by non-,
1. freeze entirely under the gutter of embankment section both sides or gutter peripheral hardware draining sewer, sewer buried depth freeze not less than local minimum
Depth, sewer longitudinal slope are not less than 0.5%, and length is not more than 300m, and sewer is long should to set transverse drainage sewer therebetween；
2. sewer anti-filter draining filler uses the gravel material of particle size uniformity, it is not less than 0.15m per layer depth, most
Big particle diameter is not more than 80mm；Or using infiltration geotextiles in fill out 10~60mm rubbles, gravel draining is gathered materials, outside fill out 0.15m thickness
Medium-fine sand stain-proofing layer；
Filter well is set to exclude the moisture in roadbed under the conditions of without flat drainage 3. freezing embankment entirely, filter well is located at gutter
Outside, when having pervious bed under roadbed in the range of road surface or under gutter；Infiltration well depth is generally higher than 3m, and pervious bed is embedding shallower
Filter well bottom surface preferably extend pervious bed；A diameter of 1.0~the 1.5m of filter well, well is interior successively to fill loaded filter from periphery to center
Material；
（10）Self-test is carried out after the completion of per procedure in time, qualified rear inspection declaration, qualified Fang Houke is examined through supervising engineer
Carry out next procedure construction.
The inventive method is banketed by displacement, simple and easy, scientific and technological content is low, but the benefit of gained can not be underestimated, and can have
Effect avoid the Second Year being open to traffic just have part way occur frost heave and frost boiling phenomenon.
Roadbed filling is filled using rubble, and rubble good water permeability, plasticity are low, and capillary water acts on small, intensity and water stability
It is good.
Using the filling material of good water permeability, in the construction period, economically there is good effect, reduce the later stage because of frost heave
Destroy the expense reprocessed.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any mark in claim should not be considered as to the involved claim of limitation.
Claims (2)
1. a kind of ever-frozen ground embankment construction method, it is characterised in that Specific construction flow is：
（1）Preparation of construction：Before subgrade construction goes into operation, it should be showed on the basis of comprehensive understanding design requirement and design are told somebody what one's real intentions are
Field investigation and verification；Temporary project is built, to meet normal construction needs；
（2）Surveying and locating：In-situ FTIR spectroelectrochemitry and route are carried out, includes the repetition measurement of wire, center line, the repetition measurement of bench mark and increasing
If central line lofting and roadbed setting-out；
（3）Place cleaning：The debris in the range of roadbed is removed, is pushed away according to the elevation for surveying work setting-out except product soil, reaches design altitude
Afterwards, rolled with road roller to design code degree of compaction standard；
（4）Smooth compacting：Cohesive soil, sandy soil substrate section, excavate former foundation soil by on-site actual situations, change and fill out rubble and divide
Lamination is real, ensures compactness under the groove of road；
（5）Embankment：1. for filled height less than 80cm locations, it, which handles depth, must reach 89cm under structure sheaf；2. by setting
Meter requires to remove vegetation, fertile soil and the tree root in the range of roadbed substrate；3. low-lying wet ＆ soft subgrade substrate sets 3~4% gradients
Permeable isolating, effective thickness determine according to actual conditions, silt layer of setting up defences up and down；4. according to landform and the specific feelings of level of ground water
Condition, deepen gutter, and satisfactory longitudinal sewer and horizontal sewer are excavated under gutter；5. built by laying bricks or stones with sand mortar flag stone
Sewer basis, form 3~4% gradient；6. laying drainage geotextiles so that rubble all to be wrapped up, take by top surface and joint in sewer
Meet more than 20cm；
（6）Placement in layers water-permeable material：Insert sewer material, sewer filling material is using must weed out the broken of fine grained and dust
Stone；
（7）Grinding compacting：After the completion of longitudinal sewer and horizontal sewer, by the leveling of roadbed bottom, simultaneously flattening-out is closely knit, and compactness reaches 93%
More than, and form the word or open roof that the gradient is 3~4%；
（8）Non- full jelly subgrade construction：1. carrying out placement in layers according to the different soil property of frost heave, the strong soil of frost resistance should be filled out
High-rise position, and filled slope is controlled, every layer of top surface should keep the draining horizontal wall inscription not less than 2.5% during banketing, and often be laminated reality side not
More than 20cm, and square thickness is no less than 0.5cm to same soil property in fact；2. being flattened with pressure ground machine, then rolled with roller, after first slow
It hurry up, shaken to shaking by force by weak, rolled from outside to inner side, roll the general overlapping 0.4~0.5m of joint vibration road roller；Vibrate wheel load
The overlapping 1/2 trailing wheel width of road machine, the two neighboring construction section successively constructed, roll 1.0~1.5m of region longitudinal overlap, compacting time
Number is determined by test section；
（9）It is complete to freeze subgrade construction：The construction of full jelly roadbed filling section freezes the execution of roadbed related content entirely by non-,
1. freeze entirely under the gutter of embankment section both sides or gutter peripheral hardware draining sewer, sewer buried depth freeze depth not less than local minimum
Degree, sewer longitudinal slope are not less than 0.5%, and length is not more than 300m, and sewer is long should to set transverse drainage sewer therebetween；
2. sewer anti-filter draining filler uses the gravel material of particle size uniformity, it is not less than 0.15m, maximum grain per layer depth
Footpath is not more than 80mm；Or using fill out 10~60mm rubbles in infiltration geotextiles, gravel draining is gathered materials, outside is filled out in 0.15m thickness thin
Sand stain-proofing layer；
Filter well is set to exclude the moisture in roadbed under the conditions of without flat drainage 3. freezing embankment entirely, filter well is located at outside gutter,
When having pervious bed under roadbed in the range of road surface or under gutter；Infiltration well depth is generally higher than 3m, and pervious bed is embedding shallower
Filter well bottom surface preferably extends pervious bed；A diameter of 1.0~the 1.5m of filter well, well is interior successively to fill loaded filter material to center from periphery
Material；
Self-test is carried out after the completion of per procedure in time, qualified rear inspection declaration, examines qualified Fang Houke to carry out lower road through supervising engineer
Process is constructed.
2. ever-frozen ground embankment construction method according to claim 1, it is characterised in that the step（8）In it is non-complete
Freeze subgrade construction, high filling section of giving priority in arranging for construction, to ensure the sedimentation time of 6 months；Such as because duration limitation can not meet
Time requirement then carries out strength operation, Accelerated subsidence.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510649541.1A CN105297572B (en) | 2015-10-10 | 2015-10-10 | A kind of ever-frozen ground embankment construction method |
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| CN201510649541.1A CN105297572B (en) | 2015-10-10 | 2015-10-10 | A kind of ever-frozen ground embankment construction method |
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| CN105297572B true CN105297572B (en) | 2018-02-23 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106638200B (en) * | 2016-12-06 | 2019-01-25 | 同济大学 | A kind of roadbed suitable for frozen ground regions is antifreeze and cuts pumping equipment and construction method |
| CN107542016A (en) * | 2017-08-09 | 2018-01-05 | 中铁四局集团第工程有限公司 | A kind of dam filling construction for controlling roadbed differential settlement |
| CN111648383A (en) * | 2020-05-28 | 2020-09-11 | 机械工业勘察设计研究院有限公司 | Internal drainage method for loess high-fill side slope |
| CN112211053A (en) * | 2020-09-29 | 2021-01-12 | 中交路桥建设有限公司 | Construction method for widening roadbed |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| RU2379405C1 (en) * | 2008-11-07 | 2010-01-20 | Государственное образовательное учреждение высшего профессионального образования "Тверской государственный технический университет" | Embankment on frozen soil |
| CN202401363U (en) * | 2011-12-29 | 2012-08-29 | 中交第一公路勘察设计研究院有限公司 | Flaky or blocky stone ventilated roadbed of expressway in frozen soil region |
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