CN206220108U - Cut Slopes of Expansive Soil reinforced earth back-pressure antiseepage supporting construction - Google Patents
Cut Slopes of Expansive Soil reinforced earth back-pressure antiseepage supporting construction Download PDFInfo
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- CN206220108U CN206220108U CN201621300966.8U CN201621300966U CN206220108U CN 206220108 U CN206220108 U CN 206220108U CN 201621300966 U CN201621300966 U CN 201621300966U CN 206220108 U CN206220108 U CN 206220108U
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- slope
- expansive soil
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- 239000002689 soil Substances 0.000 title claims abstract description 53
- 238000010276 construction Methods 0.000 title claims abstract description 38
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- 230000005484 gravity Effects 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
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- 239000004568 cement Substances 0.000 claims description 5
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- 239000004567 concrete Substances 0.000 claims description 4
- 238000011065 in-situ storage Methods 0.000 claims description 2
- 230000003014 reinforcing effect Effects 0.000 claims description 2
- 241000593357 Austroderia fulvida Species 0.000 claims 1
- 238000009412 basement excavation Methods 0.000 abstract description 29
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- 230000001681 protective effect Effects 0.000 description 3
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- 230000006378 damage Effects 0.000 description 2
- 238000012407 engineering method Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
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- 230000009286 beneficial effect Effects 0.000 description 1
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- 239000004927 clay Substances 0.000 description 1
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Abstract
The utility model discloses a kind of Cut Slopes of Expansive Soil reinforced earth back-pressure antiseepage supporting construction, including Cut Slopes of Expansive Soil, toe sets toe retaining structure, domatic setting geomembrane anti-seepage structure, the domatic safeguard structure of reinforced earth and anchoring-bolt system, slope top sets slope top back-pressure leakage preventing structure, its form is simple, safeguard structure is flexible, short construction period, the stability and completion time of project problem of swelled ground high slope can be efficiently solved, is the innovation of railway engineering field steep Cut Slopes of Expansive Soil excavation plan high and support technology.
Description
Technical field
The utility model belongs to railway subgrade works technical field, is related to the supporting construction of Cut Slopes of Expansive Soil, especially
It is related to Cut Slopes of Expansive Soil reinforced earth back-pressure antiseepage flexible supporting structure.
Background technology
There is harmomegathus repeatedly when moisture, ground temperature change in the soil body in the range of the climate influenced layer of swelled ground
Phenomenon, so as to cause the destruction on soil body top layer, and this destruction is gradually spread to depths.Meanwhile, the harmomegathus power of formation is to firm
The effect of property safeguard structure is also that should not be underestimated.During railway construction, more using gentle slope, classification indwelling platform and rigid slope
The measures such as face protection ensure the stability of expansive soil slope.Expansive soil slope must be excavated in dry season, protection works
Construct, and the excavation of next stage side slope must be carried out after upper level side slope protection engineering reaches design strength.Undoubtedly, expand
The excavation of native side slope is protected and brings acid test to the whole duration.When being especially located at tunnel face, Cut Slopes of Expansive Soil
Excavation supporting is not complete, cannot just carry out the construction in tunnel, directly contributes the rise of overhead cost.It is limited to steep expansive soil slope high to excavate
It is long in time limit, dangerous big so that railway construction process is obstructed again and again, also causes excavation and the supporting side of steep expansive soil slope high
Formula turns into the research emphasis and difficult point in railway subgrade works field.
In consideration of it, domestic and foreign scholars have carried out substantial amounts of research work, multiline pile and piling wall combination knot regarding to the issue above
Structure is the most frequently used means, although solves the stability problem of expansive soil slope, but can not meet construction period.Patent
CN103572777A discloses a kind of geotechnical grid retaining wall and its construction method, can greatly shorten the completion time of project, but it is protected
The rigidity of structure can not meet the stability requirement of swelled ground, and it is suitable only for the protection of slope of highway.Flexible bank protection energy
The slope protection of expansive soil slope is effectively solved, such as patent CN102535485A discloses a kind of reinforced earth flexible protective cutting
The inverse of side slope does engineering method, but it is only applicable to weak soil cut slope, and still can not meet construction period.As can be seen here, it is existing
Supporting and retaining system safeguard procedures urgently further improve.Mechanical characteristic is not poor in itself for swelled ground, mainly due to atmospheric effect drastically
Beach even side slope overall collapse is slipped in convergent-divergent and causing to layer repeatedly, expansive soil slope is not affected by atmospheric effects drastically layer shadow
Ring, finding effective excavation supporting scheme turns into the important topic that current rail is built.
The content of the invention
The purpose of this utility model is the deficiency for above-mentioned prior art, there is provided a kind of Cut Slopes of Expansive Soil
Reinforced earth back-pressure antiseepage supporting construction, form is simple, safeguard structure is flexible, short construction period, can efficiently solve expansion
The stability and completion time of project problem of native high slope, are railway engineering field steep Cut Slopes of Expansive Soil excavation plan high and supporting
The innovation of technology.
To achieve the above object, the utility model is achieved by following technical solution：
Cut Slopes of Expansive Soil reinforced earth back-pressure antiseepage supporting construction, including Cut Slopes of Expansive Soil, toe set toe
Retaining structure, domatic setting geomembrane anti-seepage structure, the domatic safeguard structure of reinforced earth and anchoring-bolt system, slope top sets slope top back-pressure
Leakage preventing structure.
Preferably, the slope protection structure is the swelled ground reinforcing body of digging in-situ, and reinforcement material is GSZ, instead
Be pressed on need to protect it is domatic on.
Preferably, described slope top back-pressure leakage preventing structure is built by laying bricks or stones by mortar flag stone, mortar flag stone top be not less than 2% to
Draining face outside side slope, C25 cement sand plaster of the top with thickness not less than 20mm.
Preferably, toe retaining structure uses gravity type cutting retaining wall, anchor pile to use the concrete for being not less than C35,
Gravity retaining wall is using the piece stone concrete for being not less than C35.
Construction method is as follows：
1. levelling of the land：Measurement cutting moat top scope, removing need to excavate the topsoil of part；
2. construction equipment is marched into the arena：Expansive soil slope is excavated in dry season, using rapid constructing method, set construction equipment is concentrated
Excavate, it is ensured that side slope does not receive rain drop erosion；
3. bench excavation expansive soil slope to toe is divided step by step by design side slope rate, the swelled ground of excavation is steady in influence side slope
Stack temporarily nearby in place outside fixed scope；
4. after the completion of whole expansive soil slope is excavated, from toe to slope top classification laying geomembrane, geomembrane need to be close to out
Step surface is dug, lap width 0.5m backfills Reinforced Expansive Soils while laying geomembrane, Reinforced Expansive Soils backfill width by excavating
Toe is outer 10 meters to toe, is 1 by the backfill ratio of slope of toe to design of pile top elevation:1.5, lay one layer pair every 0.6m levels
To GSZ, compaction in layers, compacting factor is not less than 0.90, and every grade of side slope is filled requirement and carries out compacting inspection by roadbed body
Survey, can carry out upper level side slope after detection is qualified fills or next process, after being backfilled to design of pile top elevation, by design slope
Face classification is backfilling and compacted, while carrying out the excavation of toe retaining structure gravity type cutting retaining wall and pouring for stake；
5. it is backfilled to when pushing up 0.5 meter away from slope, uses M7.5 mortar flag stones instead and build by laying bricks or stones to design slope top, mortar flag stone top is not for
Less than 2% to the draining face outside side slope, C25 cement sand plaster of the top with thickness not less than 20mm, meanwhile, by toe to slope
Top construction Anchored frame beam, anchor pole presses arranged in squares in Anchored frame beam, and length is 12m, anchors segment length 4m, thus completes road
The protection of moat side slope and supporting and retaining system.
3. step can use different size of bench excavation according to different side slope rates, and side slope rate is 1:When 2.0, step is wide
4.0 meters, high 2.0 meters, side slope rate is 1:When 1.75, step is wide 3.5 meters, high 2.0 meters, and side slope rate is 1:When 1.5, step is wide by 3.0
Rice is high 2.0 meters.Step 3. it is middle assume swelled ground atmospheric effect drastically layer depth be h meters, side slope face and flat surface are backbreak h meters.
The utility model Cut Slopes of Expansive Soil reinforced earth back-pressure antiseepage supporting, is characterized in：Toe is using gravity between stake
Formula cutting retaining wall, it is ensured that side slope resistance to overturning.Domatic laying geomembrane anti-seepage simultaneously uses Reinforced Expansive Soils back-pressure, makes expansion
The soil body is placed in atmospheric effect drastically below layer depth, it is to avoid swelled ground occurs repeatedly to expand, shrinks.Slope top uses and grouts piece
Stone back-pressure antiseepage, is also that the swelled ground soil body of side slope is closed under safeguard structure.Form rigid toe, slope top and flexible slope
The overall supporting and retaining system safeguard structure that face is combined.
The beneficial effects of the utility model are, using the swelled ground of Cutting Excavation of Expressway, to reduce the cost of transportation of material.Together
When, rigid protection and flexible protective are combined, and reduce the supporting measure of Against Sliding Stability, save construction costs, flexible reinforcement
Soil protection allows the swelled ground soil body to be placed in atmospheric effect drastically below layer depth, it is to avoid cut slope soil body harmomegathus repeatedly.Swelled ground
The construction method of cut slope reinforced earth back-pressure antiseepage supporting, can be after side slope be integrally excavated, while toe supporting and retaining system knot of constructing
Structure, slope protection structure, largely shorten the duration, are well suited for the excavation branch of duration tight swelled ground high slope
Shield.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is that expansive soil slope excavates schematic diagram；
Fig. 3 is to lay composite geo-membrane schematic diagram along excavation face；
Fig. 4 is backfill Reinforced Expansive Soils schematic diagram；
Fig. 5 is for construction toe anchor pile, the domatic reinforced earth of backfill, anchoring-bolt system, slope top back-pressure leakage preventing structure are illustrated simultaneously
Figure；
Fig. 6 is construction toe gravity retaining wall schematic diagram；
Label in figure：1 toe retaining structure；2 Fill Reinforced With Geogrids materials；3 backfill reinforced earths；4 expansive soil slopes；
Push up back-pressure leakage preventing structure in 5 slopes；6 geomembranes；7 anchor poles；8 swelled grounds.
Specific embodiment
The utility model is described in further detail for 1-6 and specific embodiment below in conjunction with the accompanying drawings.
It will be understood to those of skill in the art that the following example is merely to illustrate the utility model, and should not be regarded as limiting
Scope of the present utility model.In the examples where no specific technique or condition is specified, according to the skill described by document in the art
Art or condition are carried out according to product description.Device therefor is can be by buying the conventional products for obtaining.
Embodiment 1
Expensive soil cutting high slope reinforced earth back-pressure antiseepage flexibility protective slope structure, including：Cut Slopes of Expansive Soil 4 and toe
Retaining structure 1, toe retaining structure 1 can be retaining wall and pile plate wall between gravity type cutting retaining wall, stake.Domatic excavation completes
Spread a layer of clay work membrane material along excavation face afterwards, pave it is smooth after backfill reinforced earth body, reinforcement material is GSZ.Be backfilled to away from
Use mortar flag stone during the 0.5m of slope top instead and build slope top back-pressure leakage preventing structure 5 by laying bricks or stones, while applying slope protection structure.
Embodiment 2
Cut Slopes of Expansive Soil reinforced earth back-pressure antiseepage supporting construction, concretely comprises the following steps：1. levelling of the land.Measurement cutting moat
Top scope, removing need to excavate the topsoil of part；2. construction equipment is marched into the arena, and expansive soil slope must be excavated in dry season, to ensure
Side slope does not receive rain drop erosion, it is to avoid expose for a long time, it is necessary to use rapid constructing method, set construction equipment to concentrate and excavate；③
Divide bench excavation side slope to toe step by step by design side slope rate, different size of bench excavation used according to different side slope rates,
Side slope rate position 1:2.0, step is wide 4.0 meters, high 2.0 meters, side slope rate position 1:1.75, step is wide 3.5 meters, high 2.0 meters, side slope rate position
1:1.5, step is wide 3.0 meters, high 2.0 meters.Assuming that the atmospheric effect of swelled ground drastically layer depth is h meters, side slope face and flat surface
Backbreak h meters.Stack temporarily nearby in place of the swelled ground of excavation outside the scope of influence stability of slope；4. whole slope excavating
After the completion of, from toe to slope top classification laying geomembrane, geomembrane need to be close to step excavation face, lap width 0.5m, laying soil
Reinforced Expansive Soils are backfilled while work film 6.Backfill reinforced earth 3 backfill width is outer 10 meters to toe by excavation toe, by toe extremely
Stake top（Wall top）The backfill ratio of slope of design altitude is 1:1.5.One layer of direction earthwork grille, layering pressure are laid every 0.6m levels
Real, compacting factor is not less than 0.90, and every grade of side slope is filled requirement and carries out compacting detection by roadbed body, can be entered after detection is qualified
Row upper level side slope is filled or next process.It is backfilled to stake top（Wall top）After design altitude, pressed by domatic classification backfill is designed
Real, toe sets anchor pile, while the excavation and pile body that carry out anchor pile are poured；5. be backfilled to away from slope push up 0.5 meter when, use instead
M7.5 mortar flag stones are built by laying bricks or stones to design slope top, and mortar flag stone top is to the draining face outside side slope, top thickness not less than 2%
C25 cement sand plasters not less than 20mm.Meanwhile, by toe to slope top construction Anchored frame beam, framework case bay 3m, rectangle
Thus arrangement, the depth 12m of anchor pole 7 completes protection and the supporting and retaining system of cut slope.
Embodiment 3
Reinforced earth back-pressure antiseepage supporting construction as shown in Figure 1, after side slope once excavates shaping, while applying toe branch
Gear structure 1 and slope protection structure（Fill Reinforced With Geogrids material 2, backfill reinforced earth 3, geomembrane 6, anchor pole 7）, so as to contract significantly
The short duration, it is to avoid swelled ground for a long time exposes.Wherein, Fill Reinforced With Geogrids material 2 lays one layer every 0.6m levels, again
Close geomembrane 6 to be laid along excavation face and paved smooth, it is ensured that have the overlap joint of 0.5m.The width and height of step excavation are according to design
Side slope rate determines that drastically layer depth determines depth of backbreaking according to the atmospheric effect of swelled ground.Slope top sets mortar flag stone back-pressure and prevents
Structure 5 is oozed, prevents from being oozed under surface water, the swelled ground soil body of side slope is in closed state.
The tunnel portal of certain railway line is deep desulphurization expansive soil slope, 219m long, side slope maximum height 29m, totally 3 grades of sides
Slope.Expansive soil slope requirement is in dry season construction, if using traditional slope retaining mode, excavating primary protection one-level, it is necessary to 2
Year could complete the excavation supporting of side slope, that is to say, that the construction that can just carry out tunnel afterwards in 2 years, have a strong impact on the duration.
Punished using the utility model Cut Slopes of Expansive Soil reinforced earth back-pressure antiseepage supporting construction and its engineering method, specific steps are such as
Under：
（1）Levelling of the land.Measurement cutting moat top scope, removing need to excavate the topsoil of part.
（2）Selection dry season construction, is configured by two digging machines of every 50m, and totally 8 digging machine point left and right sides side slopes excavate side simultaneously
Slope.
（3）Design side slope rate is 1:2.0, drastically layer depth is 1.8m to swelled ground atmospheric effect, wide 4.0 meters by step, high
2.0 meters, the 1.8m that backbreaks classifications are excavated.The swelled ground of excavation is interim to be stacked at away from the interim mound excavated at point 200m.Side slope
Overall excavation takes 57 days.
（4）After the completion of the slope excavating of both sides, tunnel starts construction.That is, conventional construction method needs just enter for 2 years
Row constructing tunnel now only needs to can be achieved with for 2 months using the present invention.By toe one layer of composite earth is laid along the step surface for excavating
Work film, pave it is smooth after start backfill reinforced earth.Reinforcement earthen backfill width is outer 10 meters to toe by excavation toe, by toe to stake
Top（Wall top）The backfill ratio of slope of design altitude is 1:1.5.Every 0.6m levels lay one layer of direction earthwork grille, compaction in layers,
Compacting factor is not less than 0.90, and every grade of side slope is filled requirement and carries out compacting detection by roadbed body, is carried out again after detection is qualified
One-level side slope is filled or next process.After being backfilled to design of pile top elevation, it is backfilling and compacted by domatic classification is designed, while carrying out
The excavation of anchor pile.
（5）Be backfilled to away from slope push up 0.5 meter when, use instead M7.5 mortar flag stones build by laying bricks or stones to design slope top, mortar flag stone top be
Not less than 2% to the draining face outside side slope, C25 cement sand plaster of the top with thickness not less than 20mm.Meanwhile, by toe extremely
Slope top construction Anchored frame beam, framework case bay 3m, rectangular arrangement, anchor pole depth 12m.
（6）After the Anchored frame beam of slope protection and the anchor pile of toe reach design strength, set by retaining wall between stake
Meter requires to excavate the toe soil body, thus completes protection and the supporting and retaining system of cut slope.
Claims (4)
1. Cut Slopes of Expansive Soil reinforced earth back-pressure antiseepage supporting construction, including Cut Slopes of Expansive Soil, it is characterised in that toe
Toe retaining structure is set, and domatic setting geomembrane anti-seepage structure, the domatic safeguard structure of reinforced earth and anchoring-bolt system, slope top are set
Push up back-pressure leakage preventing structure in slope.
2. Cut Slopes of Expansive Soil reinforced earth back-pressure antiseepage supporting construction according to claim 1, it is characterised in that described
Slope protection structure is the swelled ground reinforcing body of digging in-situ, and reinforcement material is GSZ, back-pressure in need to protect it is domatic it
On.
3. Cut Slopes of Expansive Soil reinforced earth back-pressure antiseepage supporting construction according to claim 1, it is characterised in that described
Slope top back-pressure leakage preventing structure built by laying bricks or stones by mortar flag stone, mortar flag stone top be to the draining face outside side slope, top not less than 2%
C25 cement sand plasters with thickness not less than 20mm.
4. Cut Slopes of Expansive Soil reinforced earth back-pressure antiseepage supporting construction according to claim 1, it is characterised in that described
Toe retaining structure uses gravity type cutting retaining wall, anchor pile to be used using the concrete for being not less than C35, gravity retaining wall
It is not less than the piece stone concrete of C35.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621300966.8U CN206220108U (en) | 2016-11-30 | 2016-11-30 | Cut Slopes of Expansive Soil reinforced earth back-pressure antiseepage supporting construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621300966.8U CN206220108U (en) | 2016-11-30 | 2016-11-30 | Cut Slopes of Expansive Soil reinforced earth back-pressure antiseepage supporting construction |
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| Publication Number | Publication Date |
|---|---|
| CN206220108U true CN206220108U (en) | 2017-06-06 |
Family
ID=58787043
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621300966.8U Expired - Fee Related CN206220108U (en) | 2016-11-30 | 2016-11-30 | Cut Slopes of Expansive Soil reinforced earth back-pressure antiseepage supporting construction |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106703050A (en) * | 2016-11-30 | 2017-05-24 | 中铁二院昆明勘察设计研究院有限责任公司 | Expansive soil road cutting side slope reinforced soil back-pressure seepage-preventive supporting structure and construction method thereof |
| CN108385648A (en) * | 2018-01-22 | 2018-08-10 | 汕头大学 | A method of manufacturing resistance of soil reinforcing material using water plant water hyacinth is harmful to |
-
2016
- 2016-11-30 CN CN201621300966.8U patent/CN206220108U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106703050A (en) * | 2016-11-30 | 2017-05-24 | 中铁二院昆明勘察设计研究院有限责任公司 | Expansive soil road cutting side slope reinforced soil back-pressure seepage-preventive supporting structure and construction method thereof |
| CN106703050B (en) * | 2016-11-30 | 2019-06-25 | 中铁二院昆明勘察设计研究院有限责任公司 | Cut Slopes of Expansive Soil reinforced earth back-pressure antiseepage supporting construction and its construction method |
| CN108385648A (en) * | 2018-01-22 | 2018-08-10 | 汕头大学 | A method of manufacturing resistance of soil reinforcing material using water plant water hyacinth is harmful to |
| CN108385648B (en) * | 2018-01-22 | 2020-06-05 | 汕头大学 | Method for preparing soil strength reinforcing material by using water hyacinth which is a harmful aquatic plant |
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Granted publication date: 20170606 |