CN102444133A - Soil cement long wall continuous arch structure for slope reinforcement - Google Patents
Soil cement long wall continuous arch structure for slope reinforcement Download PDFInfo
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Abstract
The invention discloses a soil cement long wall continuous arch structure for slope reinforcement. The structural form has high slip-resisting capacity and high economic efficiency, and is very suitable for slip-resisting reinforcement treatment in soft soil slopes and soft foundation filling engineering in the engineering fields of buildings, traffic, water conservancy, mines and the like. The long wall continuous arch structure comprises an arc-shaped wall and a slip-resisting wall, wherein both the slip-resisting wall and the arc-shaped wall are formed by engaging dry spray stirring piles or wet spray stirring piles. In the working mechanism, a long wall continuous arch embedded into a slope body or a soft soil foundation passes through a most dangerous slip surface, soil is retained by using a stirring pile arc-shaped wall, the stirring pile arc-shaped wall is used for transferring horizontal push force to a stirring pile slip-resisting wall, and the stirring pile slip-resisting wall is used for finally transferring horizontal push force to a lower soil layer. By adopting the structure, the compression resistance and shearing resistance of soil cement can be brought into full play, and pile body tensile stress is avoided.
Description
Technical field
The present invention relates to a kind of long wall arcading structure of cement-soil that is applicable to the antiskid consolidation process in the weak native side slope and soft basic embankment engineering in the engineering fields such as building, traffic, water conservancy, mine.
Background technology
Current in all kinds of Infrastructure Field, antislide pile is as the main means of landslide control.The soil-cement pile composite foundation method usually is used to the ground stabilization of embankment engineering on the soft foundation and handles; But there is cantilever effect in the cement earth pile that inserts hardpan and is easy to generate bending in foundation soil, greatly weaken its anti-slide performance and reduce Engineering Reliability.Also can use concrete pile under some situation, various informative.For example arm-type single pile, framed bent stake, anchoring pile.But cantilever pile must once consume many steel; And cantilever pile poor stability; Because of cantilever pile is to rely on the enough degree of depth in insertion stratum to keep stable, the increase with cutting depth increases its embedded depth with the maximal bending moment that bears, when cutting depth is big; Its embedded depth and thickness all will strengthen, and is often uneconomical economically; The framed bent stake only the front and rear row pile spacing little with load than hour just having certain wedge action.And because the upper end forms hingedly, moment of flexure can not effectively be resisted in its upper end, unstability easily just when the build-in condition in the lower end can not fully satisfy, and the building-in depth of comparing it like this with cantilever pile can not reduce, and resistance to capsizing also can not obviously improve; The anchor anchor must dig one deck soil and do one deck anchor pole, causing construction to intersect, and also corresponding lengthening of duration is simultaneously on soft layer, bowlder stone stratum or the place is narrow on every side then is restricted when permitting no. anchor pole.In 50% soil layer, because its high-ductility can cause the obvious creep of anchor pole, so can not keep constant anchored force muchly; In addition, relative density less than 0.3 soil layer in, the frictional resistance on the anchoring section unit area is extremely low, be difficult to the anchored force that provides bigger, thereby the application of this mode receives the restriction of some geological conditions.
At present, emerging arch combining structure antislide pile.It is Chinese character pin-shaped that wherein a kind of form is that fore shaft beam connects into, and be arranged to arc in the plane, pull bar is set between the two ends of arch offsets the horizontal thrust vertical with the glide direction that comes down, and makes it become the arch of band pull bar.The two ends of pull bar and fore shaft beam are on same horizontal plane, and arc-shaped element combination antislide pile has just become an integral body like this.Another kind of form is to adopt the cement mixing pile overlap joint to form arch ring, and arch springing adopts cast-in-place concrete pile.These two kinds of forms all are to adopt domes to bear horizontal thrust, pass to arch springing to horizontal thrust then, but expend many steel or concrete, and are uneconomical.
Summary of the invention
Technical problem to be solved by this invention provides a kind of under the condition that does not increase operating expenses, be used for the side slope antiskid reinforce, simultaneously impervious, cut the long wall arcading of the cement-soil that oozes function and construct.
To achieve these goals, technical scheme of the present invention is: a kind of long wall arcading structure of cement-soil that is used for slope reinforcement, comprise N on-slip wall that is arranged side by side, and said N is not less than 2 natural number, and the length of on-slip wall is 5-20m, highly is 5-18m; Be equipped with curved wall between per two adjacent on-slip walls, and the two side ends of curved wall is connected with two adjacent on-slip walls respectively, distance is 4-8m between two adjacent on-slip centers line of wall; The horizontal section of curved wall is circular arc, and the circular arc central angle is 30 °～180 °, and distance is isometric between curved wall span and adjacent two the on-slip centers line of wall, and the height of curved wall equates with the height of on-slip wall.
The on-slip wall is that dried spraying mixture pile or the interlock of wet shot agitation pile form, and the agitation pile diameter is 500～1000mm, and lap length is not less than 200mm.
Curved wall is that dried spraying mixture pile or the interlock of wet shot agitation pile form, and the agitation pile diameter is 500～1000mm, and lap length is not less than 200mm.
Be provided with transverse crease lines contact wall between two adjacent on-slip walls, said transverse crease lines contact wall is that dried spraying mixture pile or the interlock of wet shot agitation pile form, and the agitation pile diameter is 500～1000mm, and lap length is not less than 200mm.
The working mechanism of the long wall arcading structure of cement-soil of the present invention adopts the long wall arcading that embeds in sloping body or the soft foundation to pass through the most dangerous sliding surface; This structure is arranged on influence a in the side slope resistance to overturning weak soil layer in the side slope, curved wall is delivered to the long wall of cement-soil through the arch effect with a levee body part outer horizontal thrust of arch (soil pressure), another part horizontal thrust is directly delivered in the interior soil body of arch (encircles the interior soil body and is mainly weak soil); B, the long wall arcading structure of cement-soil are delivered to the soil body within the walls through sidewall friction power with a part of horizontal thrust; The soil body is delivered to its horizontal thrust of bearing in the bottom hardpan and the outside soil body in c, the arch; D, the long wall arcading structure of cement-soil insert the hardpan part mainly through at the bottom of sidewall and the wall a part of horizontal thrust being passed to the bottom hardpan.This structure can be given full play to cement-soil resistance to compression and shear behavior, avoids occurring the pile body tensile stress.Compare with quincuncial arrangement mixing pile composite foundation processing method, under the condition that does not increase the ground disposal cost, its anti-slide performance can be greatly enhanced.Achievement of the present invention has important theory innovation, technological innovation and practical applications and is worth.
The present invention has following beneficial effect: the long wall arcading of cement-soil provided by the invention tectonic type, under the condition that does not increase disposal cost, have better anti-slide performance, and be used for structurally internal stress simultaneously and distribute rationally and improved Engineering Reliability.Simultaneously, arcading structure also has good antiseepage ability, can bring into play for the dash dykes and dams that it is impervious, cut the effect of oozing.
Description of drawings
The structural plan sketch map of Fig. 1, the long wall arcading structure of cement-soil of the present invention.
The structure elevational schematic view of Fig. 2, the long wall arcading structure of cement-soil of the present invention.
The structural plan sketch map that comprises transverse crease lines contact wall in Fig. 3, the long wall arcading structure of cement-soil of the present invention.
The agitation pile overlap joint sketch map of Fig. 4, the long wall arcading structure of cement-soil of the present invention.
Fig. 5, the long wall arcading structure of cement-soil of the present invention are arranged on the generalized section in the side slope.
Fig. 6, the long wall arcading structure of cement-soil of the present invention are arranged on the floor map in the side slope.
Fig. 7, triangle horizontal force distribution pattern are set up reductionism model of a syndrome figure.
Among the figure: 1 for the on-slip wall, and 2 be curved wall, and 3 to get in touch wall, 4 for transverse crease lines be the overlap joint of agitation pile; 5 are the long wall arcading structure of cement-soil, and 6 is domatic, and 7 is the top, slope; 8 is the end, slope, and R is the curved wall sagitta, and L is an on-slip wall length; D is that the curved wall span also is a distance between adjacent two on-slip centers line of wall, L
1Be the horizontal projection distance of transverse crease lines contact wall in on-slip wall direction, L
2Be the distance of on-slip wall end to transverse crease lines contact wall end, ψ is the angle of transverse crease lines contact wall and curved wall span direction, and c is the lap length of agitation pile; D is the agitation pile diameter; A1 is the middle weak soil layer of side slope, and A2 is the soft layer in the side slope, and A3 is the middle hardpan in the side slope.
The specific embodiment
Shown in Fig. 1-3, the long wall arcading structure of cement-soil of the present invention comprises N on-slip wall 1 that is arranged side by side, and said N is not less than 2 natural number, and the length of on-slip wall 1 is 5-20m, highly is 5-18m; Be equipped with curved wall 2 between per two adjacent on-slip walls 1, and the two side ends of curved wall 2 is connected with two adjacent on-slip walls 1 respectively, distance is 4-8m between two adjacent on-slip wall 1 center lines; The horizontal section of curved wall 2 is circular arc, and the circular arc central angle is 30 °～180 °, and spacing equates that the height of curved wall 2 equates with the height of on-slip wall 1 between curved wall span and adjacent two the on-slip centers line of wall.
On-slip wall 1 is for dried spraying mixture pile or the interlock of wet shot agitation pile form, and the agitation pile diameter is 500～1000mm, and lap length is not less than 200mm.Curved wall 2 is for dried spraying mixture pile or the interlock of wet shot agitation pile form, and the agitation pile diameter is 500～1000mm, and lap length is not less than 200mm.
As shown in Figure 3, can also be provided with transverse crease lines contact wall 3 between two adjacent on-slip walls 1, transverse crease lines contact wall 3 is 30 °～60 ° with the angle ψ of curved wall 1 span direction.Transverse crease lines contact wall 3 is for dried spraying mixture pile or the interlock of wet shot agitation pile form, and the agitation pile diameter is 500～1000mm, and lap length is not less than 200mm.
Cement-soil of the present invention long wall arcading tectonic type such as Fig. 1, Fig. 2 and shown in Figure 3, structure mainly comprises: curved wall 2 and on-slip wall 1.Curved wall 2 horizontal sections are central angle can be 30 °～180 ° circular arc; Preferred 180 ° circular arc; The power transmission effect of the curved wall of this radian preferably and be convenient to construction; On-slip wall 1 all is to be formed by dried spraying mixture pile or the interlock of wet shot agitation pile with curved wall 2, and the agitation pile diameter is 500～1000mm.The agitation pile overlap joint of the long wall arcading structure of cement-soil of the present invention is like Fig. 4, and the agitation pile lap length is not less than 200mm; Be equipped with a curved wall 2 between per two adjacent on-slip walls 1, and the two side ends of two on-slip wall 1 upper ends and curved wall 2 is connected.The unibody construction geometrical arrangements should be according to the engineering specifications optimized choice, and curved wall span (being spacing between adjacent two on-slip centers line of wall) generally can be selected 4m～8m, and the length of on-slip wall 1 is 5-20m, highly is 5-18m; Curved wall 2 sagitta calculate through curved wall span and curved wall 2 central angles, and the height of curved wall 2 equates with the height of on-slip wall.Consider extended architecture pattern: a, can select to increase transverse crease lines contact wall according to project situation; To coordinate the inner soil body stress of arch wall, distortion and raising globality; Transverse crease lines contact wall is that dried spraying mixture pile or the interlock of wet shot agitation pile form; The agitation pile diameter is 500～1000mm, and lap length is not less than 200mm; The angle ψ of transverse crease lines contact wall and curved wall span direction is that 30 °～60 ° long wall arcadings of cement-soil of the present invention are configured in setting in the side slope like Fig. 5, shown in 6; In the side slope of soft soil foundation; When stability against sliding can not meet the demands, the long wall arcading structure of cement-soil is set in soft layer.This structure need pass through the most dangerous slip circle of side slope soft layer, and is inserted in the hardpan.This structure is delivered in the hardpan the suffered major part power of soft layer, thereby reaches the effect of antiskid reinforcing side slope.This is configured in the soft or hard soil layer and will be provided with continuously, and the height that is inserted into hardpan can not be less than 1m.
Embodiment 3
The present invention constructs and implements to arrange as follows:
The long wall arcading structure of cement-soil is delivered to the horizontal thrust that the slight slope sliding force produces in the soil layer of bottom through the long wall arcading structure of Multispans continuous, thereby greatly improves the stability against sliding of slight slope.The long wall arcading structure of cement-soil is applicable to the slight slope and the embankment engineering of the natural strength deficiency of ground.Be arranged in the relatively poor weak soil of foundation stability, like mud and mucky soil, loose sand, the cohesive soil of recent deposit and silt, characteristic value is less than 130 banket, and stream is moulded loess.In weak soil: close slightly gravel, thick medium sand, the fine silt except that loose, characteristic value is less than 150 cohesive soil and silt, characteristic value greater than 130 banket plastic new loess.
The long wall arcading structure of cement-soil curved wall is protruding to form the arch structure to being connected towards slight slope slope top direction setting and with long wall; Long wall is perpendicular to the slight slope sideline; Generally should select in the slight slope slope to the scope of the sloping end to bring into play optimum efficiency along the layout scope of depth direction; Long wall arcading structure need pass through ground soft layer and the most dangerous slip circle, and the degree of depth of hardpan can not be less than 1m in being inserted into.In hardpan: in close, close slightly gravelly soil, closely knit, in close gravel, thick medium sand, characteristic load bearing capacity is greater than 150 cohesive soil and silt, hard loess.Concrete deployment scenarios and size should be on the bases of slight slope stability calculation, and relatively optimize definite through Technological Economy.Other replenish in the construction process.
It is following that the present invention constructs construction process:
1. ground, arch wall position, underground all obstructions are removed in the leveling construction plant, and low-lying place, place is with stickiness earth material backfilling compaction.
2. measure the place elevation, calculate good design stake top, design stake end absolute altitude.Measured run of steel before the pile, and on pile frame marked, comprise every meter scale (painting marked), the mark of begin to whitewash position and ultimate depth,
3. deep mixer locate → stirs sinking → preparation cement paste (or mortar) → whitewashing in advance and stirs, promotes → repeat to stir → repeat to stir and promote until a design stake end absolute altitude → close mixer, cleaning → move to next pile, repeat above operation.
4. stake is overlapped each other in soil layer with single shaft or multiaxis deep mixer; Become piling wall continuously, form long wall of cement-soil and curved wall, the sloping dorsad top of curved wall direction with certain intensity and overall structure; Keeping the stable of slope soil, and must guarantee that agitation pile overlaps more than the 200mm each other.
5. through after 2～3 months, the intensity of cement-soil will reach 0.5～1MP
a(5kg/cm
2～10kg/cm
2) more than.
Embodiment 4
The long wall arcading structure of cement mixing method single pile and cement mixing method antiskid scheme contrast demonstration:
As everyone knows, the whole antiskid of soft soil foundation side slope the most dangerous stable slip circle is dark big slip circle, when the substratum of weak soil layer is hardpan, thus the general and tangent formation of the soft or hard soil layer interface multistage curve slip circle in the most dangerous slip circle bottom.When bearing the uneven soil pressure of bilateral, the single pile antislide pile does the time spent, soft or hard soil layer interface pile body shearing resistance and bring into play anti-slide performance.The antislide pile pile body is the cantilever deformation behaviour.This research selects triangle horizontal force distribution pattern to set up the reductionism model of a syndrome, sees Fig. 7.
It is p that uneven soil pressure distribution pattern adopts the triangle distribution maximum distribution power of minimum moment of flexure effect,
Maximal bending moment then
Maximum shear
1) relation of cement mixing method single pile skid resistance and maximum shear stress
T＝3τ
maxA/4＝3πd
2τ
max/16
When Q=T
p＝3πd
2τ
max/8H
σ
t，max＝M/W＝2Hπd
2τ
max/(πd
3)＝2Hτ
max/d
Work as q
u=1.0MP
a, σ
T, max=0.2MP
a, H=5m is during d=0.7m
: τ
Max=0.015MPa
τ/q
u＝0.015
Do not satisfy cement-soil τ and unconfined compression strength q
uThe requirement of ratio between 1/2～1/5.
2) relation of long wall arcading structure of cement mixing method and maximum shear stress
T≈τ
maxA/2＝(2Ld+πRd)τ
max/2
When Q=T
p＝(2Ld+πRd)τ
max/H
σ
t，max＝M/W＝H(2Ld+πRd)(L+Y
c)τ
max/[dL
3+12dL(L/2+Y
c)
2+πRdY
c 2+πR
3d]
Wherein, Y
c=(3dL
2+ 4R
2D)/(6dL
2+ 3 π Rd)
Work as q
u=1.0MP
a, σ
T, max=0.2MP
a, H=5m, d=0.7m, L=12m, R=3m
: τ
Max=0.316MPa
τ/q
u＝0.316
Satisfy cement-soil and unconfined compression strength q
uThe requirement of ratio between 1/2～1/5.
Wherein
T-cross section skid resistance
The W-module of anti-bending section
M-cross section moment of flexure
The Q-section shear
P-triangle distribution maximum distribution power
The shear stress of τ-agitation pile
q
uThe unconfined compression strength of-agitation pile
The diameter of d-agitation pile
The height of H-agitation pile
τ
MaxThe maximum shear stress of-agitation pile
σ
T, maxThe maximum of-agitation pile
L-on-slip wall length
R-curved wall sagitta
Y
c-curved wall span center is to the distance at the long wall arcading of cement-soil center
It is thus clear that cement-soil stirs that single pile can not be given full play to the skid resistance of cement-soil and cement mixing method arcading structure can be given full play to the skid resistance of cement-soil.Under identical stressing conditions, reaching identical antiskid effect cement-soil, to stir the single pile effect better than cement mixing method arcading structure.
Station, Jinhu County is one of south water to north East Route Project cascade pumping station, and the site is on the treasure navigation channel water delivery line under the three river barrages.Station, Jinhu County design water transfer scale 150m
3/ s installs 5 covers of unit (containing 1 of standby host), takes into account the water drainage in area, lake, Baoying County simultaneously, water drainage scale 130m
3/ s.Irrigation channel slope, upper reaches top design altitude 15.0m, slope end elevation is 4.5m, natural ground level is 6.5m.Lay weak soil layer among the A1 on the original ground now, the A2 layer comprises miscellaneous fill and silt soil for soft layer, and about the thick 1.5m of miscellaneous fill, engineering properties is general, silt soil bed thickness 2～3m, and moisture content is big, and intensity is low, and compressibilty is high; A3 is that middle hardpan and following soil layer engineering properties are better.A1 layer absolute altitude is 6.5m～15.0m, and A2 layer miscellaneous fill absolute altitude is 5m～6.5m, and A2 layer soft mud absolute altitude is 2m～5m, and A3 layer absolute altitude is 1m～2m, and by above-mentioned visible, miscellaneous fill layer and silt soil strata have key influence to engineering construction and normal operation.According to exploration report, silt soil strata mainly is distributed between absolute altitude 5.0m～2.0m.Soil body mechanics index of physics is seen table 1.
Table 1, soil body mechanics index of physics
1. principal works problem
1) global stability problem
The high 15m in upstream batter slope, the upper reaches does not handle if do not carry out ground stabilization, and upstream batter construction period monolithic stability safety factor is 0.94, and it is 1.2 that the one-level dyke allows factor of safety against sliding, can not meet the demands.
Former design scheme (in August, 2010) adopts the agitation pile reinforcing soft ground.Design agitation pile stake footpath 600mm, quincuncial arrangement effluxes with interior row's replacement ratio and is respectively 0.196 and 0.11.Agitation pile penetrates A2 weak soil layer and gets into the A3 hardpan, because pile body has cantilever effect, pile body receives remarkable bending effect at the interface place when receiving horizontal loads.Agitation pile design strength 1.5MPa; Consider pile body horizontal bearing capacity characteristic; Get the horizontal shear resistance of agitation pile and multiply by coefficient for design compressive strength; Be 1500*0.06=90kPa, weak soil layer shear strength multiply by 0.7 reduction coefficient and agitation pile is scaled the ground combined strength bination, and upstream batter construction period monolithic stability safety factor is 1.23.In the aforementioned calculation, there is the risk of over-evaluating in the agitation pile horizontal bearing capacity, and simultaneously, agitation pile compressive strength 1.5MPa design load is higher, be difficult in the practice reach, thereby this design scheme upstream batter construction period anti-slide performance is undesirable.
2) agitation pile bending problem
The pile foundation level supporting capacity is not only relevant with pile body rigidity and intensity, and relevant with the mechanical property of foundation soil.When the ground upper soil horizon is harder, stake top displacement is little, and pile body can bear than the levels load, and weak when the ground upper soil horizon, stake top horizontal movement meeting is bigger, and it is very big that pile body bears moment of flexure, and its horizontal bearing capacity of bending back takes place will be lost.This engineering agitation pile deployment scenarios promptly belongs to the latter, its horizontal bearing capacity very a little less than.
3) characteristic behind the weak soil layer worker
Former design scheme, the levee body deadweight mainly is delivered to hardpan by agitation pile, and the weak soil layer does not produce consolidation settlement basically behind the worker, will remain high-moisture percentage, high-compressibility and low-intensity state.The runtime water level has under the situation about changing significantly, brings out problems such as seepage deformation easily.
4) single pile construction pile quality
Agitation pile single pile work progress is because thereby whitewashing receives factor affecting such as soil layer variability, construction technology occurs owing spray easily, owes to stir defective and form interlayer inferior, its horizontal shear resistance extremely a little less than.If there is interlayer inferior in pile body near weak soil layer and the hardpan interface, then this pile body shear resistance completely loses.
2) arch is configured in the application in the side slope antiskid problem
According to engineering specifications, propose to adopt the long wall arcading of agitation pile to unite deadweight preconsolidation scheme and reinforce levee foundation weak soil layer.In the long wall arcading of upstream batter layout agitation pile, bear horizontal thrust jointly by the interior soil body of curved wall arcading and arch, because the arcading arrangement directly is directed against slope sliding Z-TEK point, thereby can effectively the levee body horizontal loading be delivered to hardpan; On the other hand; In natural ground level thickening geotextiles water discharging body is set in the levee body after agitation pile sets and accomplishes after the upstream batter arcading and passes to back side; Levee body fills back generation subsidiary stress can make levee body stage casing weak soil obtain rapidly solidified; Weak soil layer compactness improves, gain in strength, and the levee body anti-slide performance further strengthens; The long wall arcading of agitation pile is risen and is adopted the weak earthen backfill of water permeability in the domatic 3m of above upstream batter; Stirring piling wall with the bottom is connected as dyke antiseepage body; Thereby make the dyke section form good antiseepage, drain system system, have the effect of quickening the stage casing soil solidifying again.
Cement mixing method arcading structure is set in embankment slope A2 and A3 soil layer, and absolute altitude is with original ground 6.5m place, and stake end absolute altitude adopts 1.0m; This cement mixing method arcading structure adopts dried spraying mixture pile or wet shot agitation pile to form, and the diameter of cement mixing method is 700mm, and adjacent pile body lap length is 200mm; Unibody construction mainly comprises: curved wall and on-slip wall.The curved wall structure adopts the circular arc of 180 degree, and the curved wall span is 6m, and on-slip wall length is 18m.
The stability checking computations of 3 upper reaches levee construction phases
When adopting long wall arcading scheme, the agitation pile design strength is 1.0MPa, and the agitation pile shear strength is taken as 200kPa (value is too conservative) during stability calculation, is scaled combined strength bination with the soil body in the arch and calculates.Weak soil intensity multiply by 0.7 reduction coefficient according to cutting index soon.The agitation pile shear strength is taken as 90kPa (value is bigger than normal) in the existing design scheme.
Below each stability checking computation results is listed operating mode construction period: with angle of friction
, cohesion C, natural severe ρ g, elastic modulus E
S, soil layer parameters such as poisson's ratio υ are input in the Geodelft version9.8 software and obtain the stability against sliding safety factor.
Do not carry out treatment of soft foundation upstream batter construction period antiskid buckling safety factor: 0.94.
Former design scheme upstream batter construction period antiskid buckling safety factor: 1.23.
Long wall arcading scheme upstream batter construction period antiskid buckling safety factor: 1.37
It is thus clear that the stability of long wall arcading scheme reinforcing side slope is better than former scheme.
Claims (5)
1. the long wall arcading of cement-soil that is used for slope reinforcement is constructed, and it is characterized in that: comprise N on-slip wall (1) that is arranged side by side, said N is not less than 2 natural number, and the length of on-slip wall (1) is 5～20m, highly is 5～18m; Be equipped with curved wall (2) between per two adjacent on-slip walls (1), and the two side ends of curved wall (2) is connected with adjacent two on-slip walls (1) respectively, distance is 4～8m between two adjacent on-slip centers line of wall; The horizontal section of curved wall (2) is circular arc, and the circular arc central angle is 30 °～180 °, and distance is isometric between curved wall span and adjacent two the on-slip centers line of wall, and the height of curved wall (2) equates with the height of on-slip wall (1).
2. the long wall arcading structure of cement-soil that is used for slope reinforcement according to claim 1, it is characterized in that: said on-slip wall (1) is for dried spraying mixture pile or the interlock of wet shot agitation pile form, and the agitation pile diameter is 500～1000mm, and lap length is not less than 200mm.
3. the long wall arcading structure of cement-soil that is used for slope reinforcement according to claim 1, it is characterized in that: said curved wall (2) is for dried spraying mixture pile or the interlock of wet shot agitation pile form, and the agitation pile diameter is 500～1000mm, and lap length is not less than 200mm.
4. the long wall arcading structure of cement-soil that is used for slope reinforcement according to claim 1; It is characterized in that: be provided with transverse crease lines contact wall (3) between said adjacent two on-slip walls (1); Said transverse crease lines contact wall (3) forms for dried spraying mixture pile or the interlock of wet shot agitation pile; The agitation pile diameter is 500～1000mm, and lap length is not less than 200mm.
5. the long wall arcading structure of cement-soil that is used for slope reinforcement according to claim 4, it is characterized in that: said transverse crease lines contact wall (3) is 30 °～60 ° with the angle ψ of curved wall span direction.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102912805A (en) * | 2012-11-22 | 2013-02-06 | 河海大学 | Cement mixing pile structure for side slope solidification |
| CN103711135A (en) * | 2014-01-13 | 2014-04-09 | 中国地质大学（武汉） | Anti-slide pile of jointed arch structure |
| CN105239584A (en) * | 2015-09-30 | 2016-01-13 | 常州大学怀德学院 | Multi-arch sheet pile supporting structure and construction process |
| CN105804114A (en) * | 2016-04-12 | 2016-07-27 | 交通运输部天津水运工程科学研究所 | M-shaped deep-layer cement stirring retaining structure |
| CN112095632A (en) * | 2020-08-21 | 2020-12-18 | 贵州大学 | Pile-arch combined retaining structure and construction method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102912805A (en) * | 2012-11-22 | 2013-02-06 | 河海大学 | Cement mixing pile structure for side slope solidification |
| CN102912805B (en) * | 2012-11-22 | 2016-02-03 | 河海大学 | For the cement mixing pilework of slope reinforcement |
| CN103711135A (en) * | 2014-01-13 | 2014-04-09 | 中国地质大学（武汉） | Anti-slide pile of jointed arch structure |
| CN105239584A (en) * | 2015-09-30 | 2016-01-13 | 常州大学怀德学院 | Multi-arch sheet pile supporting structure and construction process |
| CN105804114A (en) * | 2016-04-12 | 2016-07-27 | 交通运输部天津水运工程科学研究所 | M-shaped deep-layer cement stirring retaining structure |
| CN112095632A (en) * | 2020-08-21 | 2020-12-18 | 贵州大学 | Pile-arch combined retaining structure and construction method thereof |
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