CN105887898B - A kind of method and structure of protection swell-shrink characteristic ground cut slope - Google Patents

A kind of method and structure of protection swell-shrink characteristic ground cut slope Download PDF

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Publication number
CN105887898B
CN105887898B CN201610396441.7A CN201610396441A CN105887898B CN 105887898 B CN105887898 B CN 105887898B CN 201610396441 A CN201610396441 A CN 201610396441A CN 105887898 B CN105887898 B CN 105887898B
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slope
slopes
supporting
sewer
reinforced concrete
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CN105887898A (en
Inventor
张静波
王云
吴万平
李云安
何斌
段亚茹
张晶
谢松林
阮艳彬
严东方
袁亮
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CCCC Second Highway Consultants Co Ltd
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CCCC Second Highway Consultants Co Ltd
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00Excavations; Bordering of excavations; Making embankments
    • E02D17/20Securing of slopes or inclines
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D19/00Keeping dry foundation sites or other areas in the ground
    • E02D19/02Restraining of open water
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/74Means for anchoring structural elements or bulkheads
    • E02D5/76Anchorings for bulkheads or sections thereof in as much as specially adapted therefor
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2300/00Materials
    • E02D2300/0004Synthetics
    • E02D2300/0018Cement used as binder
    • E02D2300/002Concrete

Abstract

The invention discloses a kind of method and structure of protection swell-shrink characteristic ground cut slope, its step:A, by cut slope by design ratio of slope excavate it is smooth;B, along cut slope longitudinal direction at a certain distance, slope surface slabstone, gravel, mortar build a Supporting sewer;Crisscross anchor pole+Reinforced Concrete Beamsin Frame Construction is arranged on c, the slope surface between two Supporting sewers;D, on Slope top and platform position with mortar flag stone build intercepting ditch by laying bricks or stones;E, drilled in side slope bottom to slopes and be implanted into PVC and face upward inclined drainpipe;F, at toe with mortar flag stone build toe wall;G, filling loam and alien earth sparging grass planting into Reinforced Concrete Beamsin Frame Construction cell compartment.The structure by cut slope slopes, Supporting sewer, Reinforced Concrete Beamsin Frame Construction, anchor pole, intercepting ditch, face upward inclined gutter, toe wall and alien earth sparging grass planting and constitute, method is simple, it is easy to use, it is adaptable to solve reinforcement protection, hydrophobic waterproof and the environmentally friendly Landscape of swell-shrink characteristic ground cut slope.

Description

A kind of method and structure of protection swell-shrink characteristic ground cut slope
Technical field
The present invention relates to Geotechnical Engineering field, more particularly to a kind of side of protection swell-shrink characteristic ground cut slope Method, also relates to a kind of structure of protection swell-shrink characteristic ground cut slope, it is adaptable to solve swelled ground, high liquid limit soil, expansion Reinforcement protection, hydrophobic waterproof and the environmentally friendly Landscape of the swell-shrink characteristic ground cut slope such as rock, soft rockmass.
Technical background
Swell-shrink characteristic Rock And Soil, such as swelled ground, high liquid limit soil, expansive rock, soft rockmass, it is right rich in hydrophilic clay mineral Environmental wet thermal change is very sensitive, generally with water swelling, dehydration shrinkage, meets the features such as water softens.Such cut slope pole The major accident such as collapse, cave in, coming down is slipped in the diseases such as easy cracking, deformation, weathering, peeling, or even generation, once ask Topic, difficulty of governance is very big.In Geotechnical Engineering, common side slope protection form has engineering protection, vegetative protection and vegetation bone Frame is protected, and for swell-shrink characteristic ground cut slope, is had in current engineering practice by the way of more:Slow down side slope, limitation Slope is high, while coordinating the slope protection patterns such as skeleton grass planting;Strengthen top drainage, by setting multiple gutters, intercepting ditch, shape Into top drainage net system, rainwater infiltration is prevented;Have again using supporting and retaining system reinforcement types such as barricade, soil nailing, gunite concrete, friction piles Formula, and the flexible protective pattern such as ecological retaining wall.Above guard technology measure, plays important to protection swell-shrink characteristic Rock And Soil Effect, but still the technical problem for having some further to optimize, first, the key takeaway of swell-shrink characteristic geotechnical slope protection is to carry out Side slope guarded drainage, single top drainage, even being equipped with slope internal drainage pipe, due to swell-shrink characteristic Rock And Soil infiltration coefficient very It is small, it is difficult to thoroughly to eliminate the ponding inside side slope, be that the guarded drainage of this swell-shrink characteristic geotechnical slope should also strengthen subdrainage;Its Secondary, single bank protection measure, is generally unattainable predetermined effect, and single reinforcing supporting and retaining system mode, one side financial cost It is higher, while environmentally friendly landscape function is also poor, therefore, the advantage of prior art measure how is integrated, while taking into account organization plan Economic benefit and ecological, environmental protective function, many measure integration scenarios of optimization be swell-shrink characteristic Rock And Soil protection new demand.
The content of the invention
It is to be the provision of a kind of protection swell-shrink characteristic the invention aims to overcome the shortcomings of in above-mentioned technical background The method of ground cut slope, method is simple, easy to use, solves the reinforcement protection, hydrophobic of swell-shrink characteristic ground cut slope The problem of waterproof and environmentally friendly landscape.
Another object of the present invention is to be the provision of a kind of structure of protection swell-shrink characteristic ground cut slope, structure letter It is single, it is easy to use, it is safe and reliable, economic and environment-friendly.
To realize above-mentioned purpose, the present invention uses following technical scheme:
A kind of method for protecting swell-shrink characteristic ground cut slope, its step is:
A, by cut slope by design ratio of slope excavate smooth, construction lofting;
B, along cut slope longitudinal direction every 6~10m, groove is excavated from top to bottom in slope surface, a support is built by laying bricks or stones and oozes Ditch;
Crisscross Reinforced Concrete Beamsin Frame Construction Loft Line is arranged on c, the slope surface between two Supporting sewers, in framework Beam intersection is slotted to slopes internal drilling, implantation anchor pole and slip casting in slope surface along Vierendeel girder Loft Line, is laid and anchor pole The bar-mat reinforcement of connection, Reinforced Concrete Beamsin Frame Construction is formed with concreting;
D, on Slope top and platform position with mortar flag stone build intercepting ditch by laying bricks or stones;
E, drilled to slopes in the most each Vierendeel girder of the row of bottom one and Supporting sewer lower end and be implanted into PVC and face upward inclined drainpipe;
F, built with mortar flag stone at toe and to reinforce bottom of slope together and face upward inclined toe wall;
G, filling loam and alien earth sparging grass planting into Reinforced Concrete Beamsin Frame Construction cell compartment.Form a set of collection top drainage, underground The domatic comprehensive protection system of hydrophobic, reinforcing slopes, supporting toe, greening, is added with realizing to swell-shrink characteristic ground cut slope Gu protection, hydrophobic waterproof and greening and environmental protection.
A kind of structure of protection swell-shrink characteristic ground cut slope, it is by cut slope slopes, Supporting sewer, reinforced concrete frame Beam, anchor pole, intercepting ditch, face upward inclined gutter, toe wall and alien earth sparging grass planting composition, it is characterised in that:It is vertical along cut slope Set to being provided with from top to bottom on the slope surface between a Supporting sewer, every two Supporting sewer in slope surface every 6~10m There is a crisscross Reinforced Concrete Beamsin Frame Construction, each Vierendeel girder intersection takes root in anchor pole into slopes, each Vierendeel girder provided with one Ridging and soil moved in improve the original grass planting of sowing grass seeds by duster in cell compartment, while at the top of slopes and surface water is discharged in platform position provided with intercepting ditch, in side slope Bottom is provided with the toe wall faced upward inclined gutter, reinforcing bottom of slope together is provided with toe for stretching into slopes.
Described slopes, are swell-shrink characteristic Rock And Soil, such as swelled ground, high liquid limit soil, expansive rock, soft rockmass, described slope Body is cut slope, and its ratio of slope is 1:1.0~1:1.75.
Described Supporting sewer, is, every 6~10m settings one, to be arrived from top to bottom through slope top along cut slope longitudinal direction Bottom of slope;Described Supporting sewer, its bottom of trench is continuous flare shape step, and bottom of trench integrates ratio of slope and is consistent with domatic;It is described Supporting sewer, its cross section uses rectangle, wide 2~3m, deep 1~3m, the draining in the middle of Supporting sewer bottom of trench, Supporting sewer Layer, Supporting sewer both sides drainage layer and Supporting sewer ditch top are constituted, described Supporting sewer bottom of trench and Supporting sewer ditch top by M7.5 mortar flag stones or C20 slabstone concretes are built by laying bricks or stones, and described Supporting sewer both sides drainage layer is that graded broken stone or sand gravel are compacted, institute Drainage blanket is that dry-laid rubble code is built in the middle of the Supporting sewer stated.
Described Reinforced Concrete Beamsin Frame Construction, is laid in the slope surface between two Supporting sewers, is handed in length and breadth to bottom of slope from slope top Mistake is square grid, and spacing is 2~3m to grid in length and breadth;Described Reinforced Concrete Beamsin Frame Construction, is showed by the bar-mat reinforcements of Φ 8~16 and C25 concretes Pour and form, the termination colligation of described bar-mat reinforcement and anchor pole is integrated.
Described anchor pole, is the spirals of Φ 32, long 6~12m;Described anchor pole one end and the reinforcing bar of Reinforced Concrete Beamsin Frame Construction Net colligation, the other end stretches into slopes with 15 °~25 ° of tilt angled down and drilled, and described anchor pole is stretched into after slopes with M30 mortars note Fully-jewelled hole.
Described intercepting ditch, is rectangular grooves, is built by laying bricks or stones and formed by M7.5 mortar flag stones;Described intercepting ditch is arranged in side Slope top and plain stage of slope at different levels.
Described faces upward inclined gutter, is Φ 90pvc filter pipes, and slopes are implanted into 10 °~20 ° of updip angle;It is described Inclined gutter of facing upward be arranged in the most each cell compartment of placing of reinforcement concrete frame beam of bottom one and Supporting sewer lower end.
Described toe wall, to face upward inclined retaining wall, is built by laying bricks or stones and is formed by M7.5 mortar flag stones or C20 slabstone concretes, described The full wall of toe wall high 4~6m, 2~3m of embedded depth of foundation.
Described alien earth sparging grass planting, in order that will sow grass seeds by duster, base material is sowed grass seeds by duster into Vierendeel girder cell compartment by equipment, and described sows grass seeds by duster Base material is mixed by organic loam, fertilizer, water-loss reducer and grass-seed, and described grass-seed is the suitable local high-quality grass seeds grown.
The present invention compared with prior art, with advantages below and effect:
A kind of method and structure of protection swell-shrink characteristic ground cut slope, with reinforcing earth surface of side slope and underground guarded drainage work( The technical characterstic such as bank protection-reinforcing-draining compages scheme, economic and environment-friendly, can be optimized, it is adaptable to solve swell-shrink characteristic ground cutting The problem of reinforcement protection of side slope, hydrophobic waterproof and environmentally friendly landscape.With existing " slowing down side slope+skeleton grass planting bank protection " technology phase Than, the wider array of scope of application of this programme, solve the problems, such as some because topography and geomorphology is limited can not slope side slope protection.With " single Anchored frame beam or retaining wall " technical scheme is compared, and the technical program is by Supporting sewer and faces upward inclined gutter, Side slope subdrainage is strengthened, slope stability is added.With existing " Supporting sewer+skeleton protection or anchor pole are protected " technology Compare, the technical program strengthens slopes by Anchored frame beam and toe wall, improves slope stability, while relatively single Bolt anchorage, Anchored frame beam has stronger globality and compatibility of deformation function.Compared with existing " friction pile " technology, this Classical bank protection-reinforcing-the drainage measure of schemes synthesis, construction costs is more economical.With existing " holdfast or gunite concrete Or facing wall " technology compares, structure alien earth sparging grass planting in Vierendeel girder cell compartment, with good environmentally friendly landscape effect.
Illustrate accompanying drawing
Fig. 1 is a kind of structural facades figure of protection swell-shrink characteristic ground cut slope;
Fig. 2 is the section of structure of I-I place's Anchored frame beam in Fig. 1;
Fig. 3 is the structure drawing of anchor pole in Fig. 2;
Fig. 4 is the section of structure of II-II Supporting sewer in Fig. 1;
Fig. 5 is the structure transverse face figure of Supporting sewer in Fig. 4;
Wherein have:Slopes 1, Supporting sewer 2, Reinforced Concrete Beamsin Frame Construction 3, anchor pole 4, intercepting ditch 5, face upward inclined gutter 6, spats In wall 7, alien earth sparging grass planting 8, works internal drainage pipe 9, Supporting sewer bottom of trench 10, Supporting sewer ditch top 11, Supporting sewer Between drainage blanket 12, Supporting sewer both sides drainage layer 13, bar-mat reinforcement 14, concrete(C25 types)15th, drilling 16, mortar(M30 types)17.
Embodiment
Embodiment 1:
A kind of method for protecting swell-shrink characteristic ground cut slope, its step is:
A, excavation slope:By cut slope slopes by design ratio of slope(1:1.0 or 1:1.25 or 1:1.50 or 1:1.75), from Upper and lower classification is excavated, smooth domatic;
B, construction lofting:Stood on the surface of slopes 1 by a kind of overall structure of the structure of protection swell-shrink characteristic ground cut slope Face figure carries out construction lofting to essential building blocks such as Supporting sewer, anchor pole, reinforced concrete frame, intercepting ditch, toe walls, along cutting Side slope longitudinal direction is at a certain distance(Distance is 6m or 8m or 10m), a Loft Line of Supporting sewer 2 is laid from slope top to bottom of slope; On the surface of slopes 1 between two Supporting sewers 2, crisscross square mesh is arranged(Grid spacing is 2m or 3m)Reinforced concrete The Loft Line of Vierendeel girder 3;The layout point of anchor pole 4 is arranged in each intersection of Reinforced Concrete Beamsin Frame Construction 3;It is longitudinal along side slope at toe position Arrange the Loft Line of toe wall 7;The Loft Line of intercepting ditch 5 along the longitudinal spread of side slope is arranged on Slope top and platform position, simultaneously Groove is excavated along slope top intercepting ditch Loft Line, temporary drain is formed;
C, build Supporting sewer by laying bricks or stones:By Supporting sewer Loft Line installation position, branch is excavated from top to bottom on the surface of slopes 1 one by one The groove of sewer 2 is supportted, the bottom of trench of Supporting sewer 2 is continuous flare shape step, every grade of step a height of 1m or 1.5m or 2m, step bottom of trench Flare ratio of slope is 4%, while it is consistent with domatic ratio of slope to keep bottom of trench to integrate ratio of slope;The excavation size of groove is horizontal according to Supporting sewer 2 Section size is simultaneously suitably relaxed, and the cross section of Supporting sewer 2 is rectangular, wide 2m or 3m, deep 1.5m or 2m or 2.5m or 3m.Groove is opened Scrape out after type, build Supporting sewer by laying bricks or stones from bottom to top, first build Supporting sewer by laying bricks or stones along bottom of trench step with M7.5 mortar flag stones or C20 slabstones The sealing layer of bottom of trench 10, build with dry-laid rubble drainage blanket 12 in the middle of Supporting sewer by laying bricks or stones again, with sand gravel fill Supporting sewer both sides again Drainage layer 13, finally build Supporting sewer ditch top 11 by laying bricks or stones with M7.5 mortar flag stones or C20 slabstones, at the same with gutter, intercepting ditch Junction is carried out drainpipe hole position and reserved;
D, pour Anchored frame beam:In anchor pole layout point position, one by one to the internal drilling of slopes 1, drill long 6.2m or 8.2m Or 10.2m or 12.2m, aperture are 6cm or 8cm, implant angle are have a down dip 15 ° or 18 ° or 20 ° or 22 ° or 25 °, after drilling via formations, The implant bore of anchor pole 4 of locating support will be installed, anchor pole 4 is the spirals of Φ 32, long 6m or 8m or 10m or 12m, anchor pole 4 Stretch into after slopes and drilling to be filled with 0.3-0.5MPa pressure with M30 mortars 17;In Reinforced Concrete Beamsin Frame Construction setting-out line position, by beam Wide 30cm slots one by one on domatic(Deep 10cm), after ditch Slot shaping, cast-in-place beam forms is installed by Vierendeel girder size, then lay Φ The bar-mat reinforcements 14 of 12 and Φ 16, and the termination colligation of bar-mat reinforcement 14 and anchor pole 4 is integrated, then pour shape along along template groove with concrete 15 Into Reinforced Concrete Beamsin Frame Construction 3;
E, build intercepting ditch by laying bricks or stones:In Slope top and the setting-out line position of platform intercepting ditch 5, to having excavated after temporary drain Groove is repaired, then by the wide 0.8m sizes of the high 0.6m of rectangle intercepting ditch 5, is built by laying bricks or stones to form slope top and intercept water with M7.5 mortar flag stones Ditch;On plain stage of slopes at different levels, with M7.5 mortar flag stone making front covers, then at platform intercepting ditch position, M7.5 mortar flag stones are used Longitudinally build the wide 0.4m of the 0.4m one high dash ridge by laying bricks or stones along platform, form platform intercepting ditch;
F, fix a drainpipe:In the most each Reinforced Concrete Beamsin Frame Construction 3 of the row of bottom one and the lower end of Supporting sewer 2 with 10 ° or 14 or 16 Or 18 or 20 ° of updip angle is to the internal drilling of slopes 1, and it is implanted into the formation of Φ 90pvc filter pipes and faces upward inclined drainpipe 6;
G, build toe wall by laying bricks or stones:In toe wall setting-out line position, along side slope longitudinal direction using 10m be boundary line delimitation as segment, by every The mode constructed one by one of section excavates foundation trench, embedded depth of foundation 2 or 3m, width 2m or 2.5m, after foundation trench is molded, with M7.5 mortar flag stones or C20 slabstone concretes build the toe wall of one of reinforcing bottom of slope by laying bricks or stones, and toe wall is being kept off to face upward inclined retaining wall, full wall high 4 or 5 or 6m Wall bottom sets a Φ 90pvc drainpipe for penetrating wall body along longitudinal direction every 3m, while carrying on the back one of width 0.5m's of setting in wall Sand gravel drainage layer;
H, soil moved in improve the original grass planting of sowing grass seeds by duster:The high-quality grass seeds of the suitable local growth of selection, such as black malt or Festuca Arundinacea or Bermuda grass, 96.7 are pressed by organic loam, fertilizer, water-loss reducer and grass-seed:3.0:0.2:0.1 mass ratio is equipped with enough base materials of sowing grass seeds by duster, one by one to The thick loams of filling 20cm or 25cm in each beam cell compartment of reinforced concrete frame 3, then for by equipment of sowing grass seeds by duster to the lattice of Reinforced Concrete Beamsin Frame Construction 3 Interior is sowed grass seeds by duster 10cm or 5cm base materials, and it is domatic to afforest protection to form alien earth sparging grass planting.
Embodiment 2:
The present invention is described in further detail below in conjunction with the accompanying drawings.
As shown in Fig. 1~Fig. 5, a kind of structure of protection swell-shrink characteristic ground cut slope, it is by cut slope slopes 1, branch Support sewer 2, Reinforced Concrete Beamsin Frame Construction 3, anchor pole 4, intercepting ditch 5, face upward inclined gutter 6, toe wall 7 and alien earth sparging grass planting 8 and constitute, It is characterized in that:Along cut slope longitudinal direction every 6m or 8m or 10m.On the surface of slopes 1 from top to bottom provided with a Supporting sewer 2, the surface of slopes 1 between every two Supporting sewer 2 is provided with crisscross Reinforced Concrete Beamsin Frame Construction 3, each Reinforced Concrete Beamsin Frame Construction 3 Intersection takes root in ridging and soil moved in improve the original grass planting 8 of sowing grass seeds by duster in anchor pole 4 into slopes, each cell compartment of Reinforced Concrete Beamsin Frame Construction 3 provided with one, together When provided with intercepting ditch 5 discharge surface water at the top of slopes 1 and platform position, be provided with side slope bottom stretch into slopes 1 face upward inclined Gutter 6, provided with the toe wall 7 for reinforcing bottom of slope together at toe.
Described slopes 1, are swell-shrink characteristic Rock And Soil, such as swelled ground, high liquid limit soil, expansive rock, soft rockmass, described slope Body is cut slope, and its ratio of slope is 1:1.0 or 1:1.25 or 1:1.50 or 1:1.75.
Described Supporting sewer 2, is every 6 or 8 or 10m settings one, from top to bottom through slope along cut slope longitudinal direction Push up bottom of slope;Described Supporting sewer 2, its bottom of trench is continuous flare shape step, and bottom of trench integrates ratio of slope and keeps domatic consistent;Institute The Supporting sewer 2 stated, its cross section uses rectangle, wide 2m or 3m, deep 1.5m or 2m or 2.5m or 3m, Supporting sewer bottom of trench 10, Drainage blanket 12, Supporting sewer both sides drainage layer 13 and Supporting sewer ditch top 11 are constituted in the middle of Supporting sewer, described Supporting sewer Bottom of trench 10 and Supporting sewer ditch top 11 are built by laying bricks or stones by M7.5 mortar flag stones or C20 slabstone concretes, described Supporting sewer both sides drainage layer 13 be that graded broken stone or sand gravel are compacted, and drainage blanket 12 is that dry-laid rubble code is built in the middle of described Supporting sewer.
Described Reinforced Concrete Beamsin Frame Construction 3, is laid in the slope surface between two Supporting sewers, is handed in length and breadth to bottom of slope from slope top Mistake is square grid, and spacing is 2m or 3m to grid in length and breadth;Described Reinforced Concrete Beamsin Frame Construction 3, by Φ 12 and the He of 16 bar-mat reinforcements of Φ 14 C25 concretes 15 are cast-in-place to be formed, and the termination colligation of described bar-mat reinforcement 14 with anchor pole 4 is integrated.
Described anchor pole 4, is the spirals of Φ 32, long 6m or 8m or 10m or 12m;Described anchor pole one end and reinforced concrete The colligation of bar-mat reinforcement 14 of Vierendeel girder 3, the other end stretches into slopes 1 with the tilt angled down of 15 ° or 18 ° or 20 ° or 22 ° or 25 ° and drilled 16, described anchor pole 4 stretches into after slopes and to fill drilling with M30 mortars 17.
Described intercepting ditch 5, is rectangular grooves, is built by laying bricks or stones and formed by M7.5 mortar flag stones;Described intercepting ditch 5 is arranged in Side slope top and plain stage of slope at different levels.
Described faces upward inclined gutter 6, is Φ 90pvc filter pipes, with 10 ° or 14 or 16 or 18 or 20 ° of updip angle It is implanted into slopes 1;Described inclined gutter 6 of facing upward is arranged under the most each cell compartment of one placing of reinforcement concrete frame beam of bottom 3 and Supporting sewer 2 End.
Described toe wall 7, to face upward inclined retaining wall, is built by laying bricks or stones and is formed by M7.5 mortar flag stones or C20 slabstone concretes, described The full wall of toe wall high 4 or 5 or 6m, embedded depth of foundation 2 or 3m.
Described alien earth sparging grass planting 8, in order that will sow grass seeds by duster, base material is sowed grass seeds by duster into the cell compartment of Reinforced Concrete Beamsin Frame Construction 3 by equipment, institute The base material of sowing grass seeds by duster stated is by organic loam, fertilizer, water-loss reducer and grass-seed by 96.7:3.0:0.2:0.1 mass ratio is mixed, described Grass-seed be the high-quality grass seeds of suitable local growth, such as black malt or Festuca Arundinacea or Bermuda grass.

Claims (1)

1. a kind of structure of protection swell-shrink characteristic ground cut slope, it is by cut slope slopes(1), Supporting sewer(2), reinforced concrete Vierendeel girder(3), anchor pole(4), intercepting ditch(5), face upward inclined gutter(6), toe wall(7)With alien earth sparging grass planting(8)Composition, its It is characterised by:In slopes(1)Surface is from top to bottom provided with a Supporting sewer(2), every two Supporting sewer(2)Between slopes (1)Surface is provided with crisscross Reinforced Concrete Beamsin Frame Construction(3), each Reinforced Concrete Beamsin Frame Construction(3)Intersection is taken root in provided with one Enter the anchor pole of slopes(4), each Reinforced Concrete Beamsin Frame Construction(3)Ridging and soil moved in improve the original grass planting of sowing grass seeds by duster in cell compartment(8), in slopes(1)Top And platform position is provided with intercepting ditch(5), it is provided with side slope bottom and stretches into slopes(1)Face upward inclined gutter(6), set at toe There is the toe wall of one of reinforcing bottom of slope(7);
Described slopes(1)For swell-shrink characteristic Rock And Soil, slopes(1)For cut slope, its ratio of slope is 1:1.0-1:1.75;
Described Supporting sewer(2)To set one every 6-10m along cut slope longitudinal direction, slope is arrived through slope top from top to bottom Bottom, Supporting sewer(2)Bottom of trench is continuous flare shape step, and bottom of trench integrates ratio of slope and is consistent with domatic, Supporting sewer(2)It is horizontal Section uses rectangle, wide 2-3m, deep 1.5-3m, by Supporting sewer bottom of trench(10), drainage blanket in the middle of Supporting sewer(12), support Sewer both sides drainage layer(13)With Supporting sewer ditch top(11)Constitute, Supporting sewer bottom of trench(10)With Supporting sewer ditch top(11)By M7.5 mortar flag stones or C20 slabstone concretes are built by laying bricks or stones, Supporting sewer both sides drainage layer(13)It is that graded broken stone or sand gravel are compacted, it is described Supporting sewer in the middle of drainage blanket(12)Built for dry-laid rubble code;
Described Reinforced Concrete Beamsin Frame Construction(3)Slope surface between two Supporting sewers, it is crisscross to bottom of slope from slope top to be in Square net, spacing is 2-3m to grid in length and breadth;Described Reinforced Concrete Beamsin Frame Construction(3)By Φ 12 and the bar-mat reinforcements of Φ 16(14)And C25 Concrete(15)It is cast-in-place, bar-mat reinforcement(14)With anchor pole(4)Termination colligation be integrated;
Described anchor pole(4)For the spirals of Φ 32, long 6-12m;Anchor pole(4)One end and Reinforced Concrete Beamsin Frame Construction(3)Bar-mat reinforcement (14)Colligation, the other end stretches into slopes with 15 ° -25 ° of tilt angled down(1)Drilling(16), anchor pole(4)Stretch into and M30 is used after slopes Mortar(17)Fill drilling;
Described intercepting ditch(5)For rectangular grooves, built by laying bricks or stones by M7.5 mortar flag stones, intercepting ditch(5)Be arranged at the top of side slope and Plain stage of slopes at different levels;
Described faces upward inclined gutter(6)For Φ 90pvc filter pipes, slopes are implanted into 10 ° -20 ° of updip angle(1), face upward tiltedly Formula gutter(6)It is arranged in the most placing of reinforcement concrete frame beam of bottom one(3)Each cell compartment and Supporting sewer(2)Lower end;
Described toe wall(7)To face upward inclined retaining wall, built by laying bricks or stones by M7.5 mortar flag stones or C20 slabstone concretes, the full wall of toe wall is high 4-6m, embedded depth of foundation 2-3m.
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