CN205242393U - Novel stake of deep weak soil foundation stabilization - Google Patents
Novel stake of deep weak soil foundation stabilization Download PDFInfo
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- CN205242393U CN205242393U CN201521002015.8U CN201521002015U CN205242393U CN 205242393 U CN205242393 U CN 205242393U CN 201521002015 U CN201521002015 U CN 201521002015U CN 205242393 U CN205242393 U CN 205242393U
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Abstract
The utility model discloses a novel stake of deep weak soil foundation stabilization, this reinforcing pile be along radially dividing the three -layer to arrange, includes inlayer pile body, a middle level net section of thick bamboo and the skin geomembrane that permeates water respectively, the net piece that a net section of thick bamboo was made for modify polyethylene material or modified polypropylene material encloses. The utility model discloses an use traditional rubble stake as the prototype, use for reference and merge the geotechnique in bags the grit stake set up to go along with sb. To guard him and realize opening one's minds of drainage with the drainage tubular pile, remove to promote the measure of the going along with sb. To guard him intensity and the water discharge ability of prose style free from parallelism pile body simultaneously, reduce the implementation degree of difficulty and the measure cost of pile body, make and is between themly strengthened less than remedying the advantage.
Description
Technical field
The utility model relates to reinforced soft soil ground technical field, refers to particularly a kind of novel deep softSoil foundation reinfored stake.
Background technology
At present, soft soil foundation is reinforced and comprised newly-built and reconstruction passenger traffic freight rail, administrative region of a cityRailway, inter-city passenger rail, high-speed railway, to the track traffics such as urban track traffic, highway, at a high speedThe highway communication such as highway, town road and to airport, port and pier, Logistic Base, power station,The weak soil of the large-scale siteworks such as comprehensive transportation hub, underground deep-foundation pit engineering, wetland landscape transformationGround is reinforced.
Traditional reinforced soft soil ground treatment measures function is relatively single, in a sense substantially canTo be divided into two large classes: a class is discharging consolidation technology, to be and to accelerate and raising weak soil body consolidation effectCreate drainage condition, fundamentally improve weak soil body engineering property, as sand wick, plastic drainingPlate, vacuum preloading etc., but this class technological means is except vacuum preloading, all the fixed cycle long, take effectSlowly, and finally improve foundation capability and control the ability of sedimentation all very limited, be only suitable forShallow-layer to less demanding especially not high to the requirement of settlement control weak soil of composite foundation bearing capacityFoundation stabilization. Another kind of is to adopt pile body to reinforce means, jointly forms a kind of compound with inter-pile soil bodyGround improves ground comprehensive load capacity and settlement Control ability, and this class measure is divided into again: (1) lowThe compacted displacement stake of intensity discrete material (granular pile), as crushed stone bed course, crushed stone pile, ash(cement) native compaction pile etc.; (2) the good flexible pile of intensity and globality, as cement mixing method,Rotary churning pile, CFG stake etc.; (3) better semi-rigid, rigid pile of intensity and globality, as mixed in elementThe stake of solidifying soil, reinforced concrete pile etc., this class reinforcing pile mode instant effect, should but need dependence to addPower affects one or more layers better subsoil supporting course in depth bounds, and inter-pile soil body can notPass and continue to improve in time, the later stage also there will be the possibility of consolidation effect decay.
Utility model content
The purpose of this utility model is exactly the deficiency that will solve above-mentioned background technology, provides a kind of energy sameThe novel deep soft soil foundation of Shi Tigao composite foundation comprehensive load capacity and settlement Control ability addsGu stake.
The technical solution of the utility model is: a kind of novel deep soft soil foundation reinforcing pile, its featureBe: described reinforcing pile radially divides three layers of layout, comprise respectively internal layer pile body, middle level net cylinder andOuter permeable geomembrane; Described net cylinder is that modified polyethylene material or modified polypropylene material are madeNet sheet surrounds.
Preferably, described net sheet is wrapped in described pile body radial outer wall, a radially side of described net sheetBe laminated on described net sheet radially on another side.
Preferably, described net sheet is wrapped in described pile body radial outer wall, a radially side of described net sheetSplice by band with another side radially.
Preferably, described net sheet is provided with multi-segmental vertically, and the net sheet of adjacent segment passes through bandSplice.
Further, described band comprises pricks bar and fore shaft, and a side of described bundle bar is provided with multipleThe pawl being arranged side by side, described fore shaft is arranged on described bundle bar one end, and described fore shaft can be at described bundleOn bar, carry out single-way moving, and locking.
Described permeable geomembrane is packaged in described net cylinder radial outer wall, the seam of described permeable geomembraneLap width is not less than 5cm.
Described pile body is pellet stake.
The utility model increases periphery can to traditional pile body go along with sb. to guard him measure, weakens or has eliminated traditionThe stress dissipation effect of pile body, has significantly promoted pile body stress and stress-bearing capability, passes through simultaneouslyThe innovation of pile body structure makes pile body have powerful lasting drainability concurrently simultaneously, significantly improves weak soil bodyConsolidation rate, the degree of consolidation and continue to maintain and strengthen the ability of later stage soft soil consolidation effect.
Brief description of the drawings
Fig. 1 is the structural representation of deep soft soil foundation reinforcing pile of the present utility model;
Band structural representation in the utility model of Fig. 2 position.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
The novel deep soft soil foundation reinforcing pile of the described one of the present embodiment, can be called composite webThe stake of barrel structure draining pellet, with reference to figure 1, this reinforcing pile radially divides three layers of layout, comprises respectivelyInternal layer pile body 1, middle level net cylinder 2 and outer permeable geomembrane 3.
The internal layer pile body 1 of the present embodiment is pellet stake, and its pellet is advocated and adopted intensity to build preferablyWaste material rubbish---concrete block, concrete block adopts rubble Mechanical Crushing to make, and screens out particulatePart, form the good artificial metaling of size grading. Can make full use of like this building waste or buildingRubbish, realizes the cyclic utilization of waste, is a kind of economic model that suits sustainable development.
The present embodiment increases middle level net cylinder 2 outward at internal layer pile body, this net cylinder 2 for a layer thickness be 2～The modified polyethylene material of 4cm or the modified polypropene strand powerful net sheet material system forming that bondsBecome, the mode that net sheet is wrapped in pile body radial outer wall has two kinds, Yi Zhongwei: net sheet is a side radiallyBe arranged on net sheet radially on another side, the Mosaic face part of net sheet is overlapping, and overlapping width is not littleIn 5cm; Another kind of mode is: a net sheet radially side splices by band with another side radially,With reference to figure 2, this band comprises pricks bar 4 and fore shaft 5, and a side of pricking bar 4 is provided with side by side multipleThe pawl 4.1 arranging, fore shaft 5 is arranged on to be pricked on bar 4 one end and can carry out Unidirectional sliding along pricking bar 4Moving, when the Mosaic face of net sheet splices, bundle bar 4 one end of belt lock catch 5 are not successively through two of net sheetIndividual Mosaic face, pricks subsequently bar 4 and pierces into the fore shaft 5 that is positioned at bundle bar 4 other ends, and bar 4 is pricked in tension,Make to prick bar 4 one-way lockings, can complete the mutual splicing of two Mosaic faces of net sheet.
In the time that net sheet is not enough along its length, can be provided with vertically multi-segmental net sheet, adjacent segmentNet sheet splice by band, to match with pile body length. Employing sectional type net sheet can edgeCarry out the prefabricated net barrel structure that is in producer, the splicing of field by using band, and this kind of spliced net cylinder toolThere are better vertically pulling-resistant and horizontal shear resistance.
The composite web barrel structure of the present embodiment can be eliminated well the stress dissipation of traditional broken stone pile and doWith impact, no matter be compared with traditional broken stone pile, or with bag pile, the soil engineering bag of recent appearanceThe novel pile bodies such as (film bag) sand loading stone mar are compared, vertical bearing capacity and vertical compression contracting resistance to deformationAbility all been significantly enhanced; Simultaneously because this powerful net sheet material has good tension, anti-Cut, incompressible deformability, can be in the routine of 200～250KPa (20～25T/m2) radially or perpendicularUnder pressure, section voidage still remains on 60% left and right, outer the depressing that is no more than 100 tons,Water flowing porosity is still not less than 10%, substantially can recover original how much after peripheral pressure is removedShape, the section porosity that it is high, can provide powerful water permeable ability for pile body, with packedThe old-fashioned drainage patterns such as sand drain and plastic draining board are compared, and its specific area is larger, non-deformabilityStronger, passage hole is larger, and therefore comprehensive drainability is stronger thoroughly, therefore also just can make weak soil bodyDischarging consolidation ability significantly improve, and can also permanently effectively keep after work.
In addition, the net sheet material of this kind of net barrel structure also has good shearing resistance, tensile property, thoughStrong not as good as reinforcing bar, but its ductility, corrosion resistance etc. are all better than reinforcing bar, therefore make pile body also haveCertain shearing resistance, tension (pulling out) ability, this performance can be brought into play remarkable effect both ways:The one, after pile body shear resistance improves, inter-pile soil body can better be brought into play soil arching effect, significantly improvesEarthfill road embankment stability, is all significantly increased to the speed of banketing, the permission depth of fill, on the other handWhen as foundation ditch foundation stabilization, can also bring into play auxiliary uplift effect.
Be positioned at outermost permeable geomembrane 3 and be packaged in net cylinder 2 radial outer wall, permeable geomembrane 3Seam lap width be not less than 5cm, this permeable geomembrane 3 has tension, anti-to puncture performance goodFeature, can provide good confined pressure for pile body 1; And outer permeable geomembrane 3 also has wellPermeable resistance mud function, its pore size can be selected according to glutinous grain particle diameter progression, this has just guaranteed multipleThe powerful drainability of closing net barrel structure is more lasting.
And, can go out at the outer wall veil cylinder 2 and the permeable geomembrane 3 that are subject to pile body 1 after soil body extrudingExisting concavo-convex, significantly strengthen contact and interlock effect, can significantly improve pile body 1 and inter-pile soilCoordinate stress.
In addition, the bi-material of formation net cylinder 2 and outer permeable geomembrane 3 also has stronger resistingAging, decay resistance, make the engineering property of pile body more stable lasting.
In sum, this net barrel structure can make originally the pellet stakes such as traditional broken stone pile compare, structure andAll having there is change in essence in performance, makes it to become a kind of reinforcement flexible pile of good integrity, energyThereby provide the constraint of stronger side limit to significantly improve composite foundation bearing capacity, the discharging consolidation of this pile bodyAbility is powerful and lasting, can fundamentally improve the engineering property of soft soil, significantly shortens speed heavyConvergent cycle falls.
This implements the stake of described composite web cylinder draining pellet, with conventional composite foundation stabilization measure phaseRatio, can effectively shorten reinforcing pile length, especially in the time that the foundation stabilization of Deep Thick Soft Ground Area is processedRemarkable in economical benefits.
The construction method of above-mentioned net cylinder draining broken stone pile comprises the following steps:
1) utilize rig to set construction and use hole, and to constructing with carrying out retaining wall processing in hole;
2) make the middle level net cylinder 2 that diameter is less than construction hole internal diameter, and by permeable skin geotechniqueFilm 3 external applications are in net cylinder 2 radial outer wall of middle level, to form composite web barrel structure;
3) by step 2) in the composite web barrel structure that completes be sleeved in advance on sleeve pipe, multipleClose net barrel structure and sleeve pipe and synchronously fill in construction with in hole, after being in place, sleeve pipe is taken out to sleeve pipeCan, for net cylinder 2 provides radial support, make the smooth below of composite web barrel structure;
4) construction is positioned at the internal layer pile body of composite web barrel structure: by preprepared rubble etc.Pellet is sent in net cylinder from composite web barrel structure mouth;
5) make pellet closely knit, can form the stake of net cylinder draining pellet.
In described step 1) in, rig adopts vibration sinking tube compacted stake machine common on market.
The present embodiment is taking traditional broken stone pile as prototype, uses for reference and merges soil engineering bag sand loading stone mar and set upGo along with sb. to guard him with drainage tubular pile and realize opening one's minds of draining, go to promote the measure of going along with sb. to guard him of prose style free from parallelism pile body simultaneouslyIntensity and drainability, enforcement difficulty and the measure cost of reduction pile body, obtain both deficienciesThe advantage of making up is strengthened.
The above, be only better case study on implementation of the present utility model, not new to this practicalityThe structure of type is done any pro forma restriction. Every foundation technical spirit of the present utility model to more thanAny simple modification, equivalent variations and modification that embodiment does, all still belong to of the present utility modelIn the scope of technical scheme.
Claims (7)
1. a novel deep soft soil foundation reinforcing pile, is characterized in that: described reinforcing pile is along footpathTo point three layers of layout, comprise respectively internal layer pile body, middle level net cylinder and outer permeable geomembrane; DescribedNet cylinder is that the net sheet that modified polyethylene material or modified polypropylene material are made surrounds.
2. the novel deep soft soil foundation reinforcing pile of one according to claim 1, its featureBe: described net sheet is wrapped in described pile body radial outer wall, a described net sheet radially side is laminated onDescribed net sheet is radially on another side.
3. the novel deep soft soil foundation reinforcing pile of one according to claim 1, its featureBe: described net sheet is wrapped in described pile body radial outer wall, described net sheet radially a side with radiallyAnother side splices by band.
4. the novel deep soft soil foundation reinforcing pile of one according to claim 1, its featureBe: described net sheet is provided with multi-segmental vertically, the net sheet of adjacent segment is spelled by bandConnect.
5. according to the novel deep soft soil foundation reinforcing pile of the one described in claim 3 or 4, itsBe characterised in that: described band comprises pricks bar and fore shaft, and a side of described bundle bar is provided with side by side multipleThe pawl arranging, described fore shaft is arranged on described bundle bar one end, and described fore shaft can be on described bundle barCarry out single-way moving, and locking.
6. the novel deep soft soil foundation reinforcing pile of one according to claim 1, its featureBe: described permeable geomembrane is packaged in described net cylinder radial outer wall the connecing of described permeable geomembraneSeam lap width is not less than 5cm.
7. the novel deep soft soil foundation reinforcing pile of one according to claim 1, its featureBe: described pile body is pellet stake.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521002015.8U CN205242393U (en) | 2015-12-04 | 2015-12-04 | Novel stake of deep weak soil foundation stabilization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521002015.8U CN205242393U (en) | 2015-12-04 | 2015-12-04 | Novel stake of deep weak soil foundation stabilization |
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| CN205242393U true CN205242393U (en) | 2016-05-18 |
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| CN201521002015.8U Active CN205242393U (en) | 2015-12-04 | 2015-12-04 | Novel stake of deep weak soil foundation stabilization |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105350533A (en) * | 2015-12-04 | 2016-02-24 | 中铁第四勘察设计院集团有限公司 | Novel deep soft soil foundation strengthening pile |
| CN114109394A (en) * | 2021-10-22 | 2022-03-01 | 西南交通大学 | Method for determining pile length of tunnel shallow-buried weak surrounding rock high-pressure jet grouting pile method ground surface reinforcement |
-
2015
- 2015-12-04 CN CN201521002015.8U patent/CN205242393U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105350533A (en) * | 2015-12-04 | 2016-02-24 | 中铁第四勘察设计院集团有限公司 | Novel deep soft soil foundation strengthening pile |
| CN114109394A (en) * | 2021-10-22 | 2022-03-01 | 西南交通大学 | Method for determining pile length of tunnel shallow-buried weak surrounding rock high-pressure jet grouting pile method ground surface reinforcement |
| CN114109394B (en) * | 2021-10-22 | 2022-07-15 | 西南交通大学 | Method for determining pile length of tunnel shallow-buried weak surrounding rock high-pressure jet grouting pile method ground surface reinforcement |
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Effective date of registration: 20180530 Address after: 650206 Kunming, Guandu, Yunnan province Guandu town Guangfu Road 5349, Yinhai Cherry Blossom happiness square F Co-patentee after: The forth Survey and Design Institute (Group) Co., Ltd. Of CRCC Patentee after: SW survey and Design Co., Ltd. Address before: 430063 No. 745, Ping Yuan Road, Yangyuan garden, Wuchang, Wuhan, Hubei, Wuhan Patentee before: The forth Survey and Design Institute (Group) Co., Ltd. Of CRCC |