CN205116152U - Soft basic device is consolidated in electric osmose reinforcing stake - Google Patents
Soft basic device is consolidated in electric osmose reinforcing stake Download PDFInfo
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- CN205116152U CN205116152U CN201520882048.XU CN201520882048U CN205116152U CN 205116152 U CN205116152 U CN 205116152U CN 201520882048 U CN201520882048 U CN 201520882048U CN 205116152 U CN205116152 U CN 205116152U
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- preformed pile
- electric osmose
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Abstract
The utility model discloses a soft basic device is consolidated in electric osmose reinforcing stake, including electrically conductive combined material, electrically conductive combined material comprises the strip carbon cloth of pasting by the wire, and it is even vertical closely connected surperficial in the precast pile that electrically conductive combined material passes through epoxy, the precast pile bottom is equipped with the steel shoe, and electrically conductive combined material bottom UNICOM of each other places in the steel shoe, there is the one deck wire net at the outside parcel of electrically conductive combined material to set up a fixed steel loop along the every keep (shenglvehao)at a certain distance away of precast pile, electrically conductive combined material top is passed through the wire and is linked to each other with the anodal of DC power supply, inserted the busbar water pipe in the soft soil foundation between the precast pile, the busbar water pipe links to each other with the vacuum pump through horizontal drain pipe on the one hand, also links to each other through the negative pole of wire with DC power supply on the one hand in addition. The beneficial effects of the utility model are that: dissipate and improve stake side friction resistance, rational in infrastructure, the quality is reliable, the efficiency of construction is high.
Description
Technical field
The utility model belongs to Base Consolidation Engineering field, and particularly a kind of electric osmose strengthens stake reinforcing flexible foundation device, is applicable to Soft Ground construction.
Background technology
China coast is extensively dispersed with a large amount of deep soft soil foundation, and soil property is mainly mucky soil.Because soft foundation has the features such as water content is high, compressibilty is large, permeability is low, usually need to carry out basement process before the construction such as construction work, highway construction.Preformed pile applies very general soft-soil foundation treatment method, and preformed pile pile-type the most common is reinforced concrete pipe pile or reinforced concrete rectangle pile, has that bearing capacity of single pile is high, pile quality is reliable, high efficient construction.
Construction of prefabricated piles adopts usually to be rammed, to vibrate or the mode of static pressure is constructed, because soft foundation water content is very high, permeability is poor again, very high excess pore water pressure can be produced in stake bottom in preformed pile pile driving process, excess pore water pressure is difficult to dissipate, not only make preformed pile pile sinking difficulty, and can produce serious soil compaction effect, the preformed pile of having constructed around causing floats, tilt even broken pile.Meanwhile, preformed pile pile sinking can cause Pile side soil body structure to destroy, and shear strength seriously undermines even to be lost, and after pile sinking completes, shear strength needs could recover for a long time, and preformed pile bearing capacity increasess slowly, and affects the construction period.Another one aspect, preformed pile smooth surface, all weak soil shear strengths of stake are lower again, thus pile side friction is on the low side, and bearing capacity of single pile is not high, usually needs closeer pile spacing can provide the bearing capacity of foundation soil of needs, cause preformed pile treatment of soft foundation cost higher, the wasting of resources.In addition, the consolidation settlement under overlying burden effect of stake week weak soil, toward producing larger negative friction backward, reduces preformed pile bearing capacity of single pile.
In sum, preformed pile reinforcing soft ground has the problems such as soil compaction effect is serious, carrying poor in timeliness, pile side friction is low, negative friction is large, needs badly and is addressed these problems by improvement opportunity.
Utility model content
The purpose of this utility model overcomes the deficiencies in the prior art, provides a kind of and dissipate and improve pile side friction, and electric osmose rational in infrastructure strengthens stake reinforcing flexible foundation device.
In order to realize above-mentioned technical purpose, the utility model have employed following technical scheme:
This electric osmose strengthens stake reinforcing flexible foundation device, and comprise conducing composite material, described conducing composite material forms by being pasted with strip carbon cloth wiry, and conducing composite material is evenly vertically closely connected in preformed pile surface by epoxy resin; Be provided with steel shoe bottom preformed pile, conducing composite material bottom communicates with one another and is placed in steel shoe; There is layer of steel wire net in conducing composite material outer wrap, and along preformed pile, a fixing steel loop is set at interval of certain distance; Conducing composite material top is connected with the positive pole of dc source by wire; Be inserted with busbar water pipe in soft foundation between preformed pile, busbar water pipe is connected with vacuum pump by horizontal drain pipe on the one hand, is also connected with the negative pole of dc source by wire on the one hand in addition.
As preferably: described preformed pile is the precast reinforced concrete piles of arbitrary section.
As preferably: described conducing composite material is that root and above wire are pasted by conductive tape in strip carbon cloth surface, and wire can use copper wire, stainless steel wire or titanium silk;
As preferably: conducing composite material is vertically pasted along preformed pile, lay at preformed pile surface uniform interval, and interconnected by wire in preformed pile bottom.
As preferably: described steel shoe is channel-shaped, and its cross sectional shape is identical with preformed pile bottom section shape, bigger bottom internal space ratio preformed pile.
As preferably: described wire adopts aluminium core or copper core insulation line, the mode that when wire is connected with conducing composite material, employing wire exposed part and copper wire and carbon cloth are intertwined and connected mutually.
As preferably: busbar water pipe adopts carbon fiber pipe with holes or coating steel pipe, pipe outsourcing geotechnique filter cloth, also can adopt the conductive plastics band drain being made into inner core with conductive plastics.
As preferably: described horizontal drain pipe adopts PVC or PE pipe, and be connected with busbar water pipe by threeway, horizontal drain pipe is aggregated on a drain header, drain header connection vacuum pump.
As preferably: the pulse DC power supply that described dc source adopts electric current to export with square.
The beneficial effects of the utility model are:
1) electric osmose can impel the pore water in stake week to flow to rapidly cathode tube between stake, namely electric osmose is started in piling construction process, the excess pore water pressure that piling produces can be able to rapid dissipation under electroosmosis, significantly can alleviate the soil compaction effect that pile sinking causes, prevent soil compaction effect on the impact of periphery pipeline, building etc.;
2) after pile sinking completes, electroosmosis can continue to promote pile peripheral earth consolidation, accelerates pile capacity and increases, improve the ageing of preformed pile bearing capacity, realize superstructure rapid loading;
3) because electric osmose can work to the weak binding water around fine grained in weak soil, under the electroosmosis continued, moisture in Pile side soil body is gradually by drainage, pile peripheral earth intensity significantly improves, electrochemical action simultaneously on Pile Soil interface enhances the intensity at Pile Soil interface, thus greatly can increase pile side friction, and make electric osmose strengthen stake and obtain than without the higher bearing capacity of electroosmosis preformed pile, can be long according to the stake of friction pile in design to a certain extent minimizing thick and soft groundsill.
4) the utility model not only solves the frictional resistance problem of preformed pile, also impels the consolidation draining of inter-pile soil simultaneously.Water in ground flows to draining contact tube under electroosmosis, and discharged from draining contact tube by vacuum pump, weak soil obtains consolidation settlement, remarkable to the reinforcement effect of inter-pile soil, and the bearing power increase of inter-pile soil is very favourable to the Bearing Capacity of Composite Foundation improving preformed pile composite foundation.
5) conducing composite material described in the utility model adopts strip carbon cloth conventional in structural fortification, conductive tape is utilized to be pasted onto on strip carbon cloth by two copper wires, be made into conducing composite material, this composite material has the feature of high strength & high electric-conduction and highly corrosion resistant.
6) the utility model is provided with steel shoe at the bottom of stake, in pile driving process, have good protective effect to conducing composite material, causes damage in preventing preformed pile from sinking to conducing composite material.
7) the utility model is outside equipped with gauze wire cloth at conducing composite material and is provided with fixing steel loop at a certain distance; gauze wire cloth on the one hand protection conducing composite material is not destroyed by penetrating resistance; also conducing composite material is made to interconnect on the one hand in addition; be engaged in the uniformity improving conduction; prevent local damage and cause conductive gap, fixing steel loop is used for fixing gauze wire cloth and conducing composite material.
Accompanying drawing explanation
Fig. 1 is conducing composite material schematic diagram;
Fig. 2 is that electric osmose strengthens stake cross-sectional view;
Fig. 3 is that electric osmose strengthens stake elevation;
Fig. 4 is that electric osmose strengthens stake reinforcing flexible foundation unit layout figure;
Fig. 5 is that electric osmose strengthens stake reinforcing soft ground schematic diagram;
Description of reference numerals: wire 1; Conductive tape 2; Carbon cloth 3; Preformed pile 4; Conducing composite material 5; Gauze wire cloth 6; Fixing steel loop 7; Steel shoe 8; Electric osmose strengthens stake 9; Busbar water pipe 10; Wire 11; Dc source 12; Horizontal drain pipe 13; Drain header 14; Vacuum pump 15; Soft foundation 16; Bearing stratum 17.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is described further.Although the utility model will be described in conjunction with preferred embodiment, should know, not represent the utility model restriction in the described embodiment.On the contrary, the utility model will contain can be included in attached claims limit scope of the present utility model in alternative, modified and equivalent.
On strip carbon cloth 3, paste wire 1 as shown in Figure 1, carbon cloth 3 width is 10cm, and wire 1 adopts copper wire, to be pasted onto respectively on carbon cloth 3 by two copper wires to form conducing composite material 5 by conductive tape 2.Adopt epoxy resin, as cementing agent, conducing composite material 5 is closely attached to preformed pile 4 on the surface, preformed pile 4 adopts diameter to be the steel concrete pile for prestressed pipe of 60cm, vertically evenly lays 8 conducing composite materials 5.Conducing composite material 5 is interconnected in preformed pile 4 bottom and is placed in steel shoe 8, layer of steel wire net is wrapped up again outward at composite material, the desirable 4-8cm of gauze wire cloth mesh size, gauze wire cloth bottom is also placed in steel shoe 8, steel shoe 8 is cylindric, internal diameter is more bigger than preformed pile 4 external diameter, can hold preformed pile 4 end pasting conducing composite material 5 wrapped wire net 6.Tightly banding is on preformed pile 4 by gauze wire cloth 6 vertically to arrange a fixing steel loop 7 every 2m along preformed pile 4, and fixing steel loop 7 can adopt steel hoop to be welded and fixed, and also can be fixed by bolt tightening by prefabricated steel loop.Be pasted with conducing composite material 5 and the preformed pile 4 being enclosed with gauze wire cloth 6 defines electric osmose strengthens stake 9, electric osmose strengthens the schematic diagram of stake 9 as shown in Figures 2 and 3.
Conducing composite material 5 top is connected with the positive pole of dc source by insulated copper heart yearn, and the thickness of insulated copper heart yearn is determined according to the Conductivity Calculation magnitude of current of pile spacing and soil.Carbon fiber pipe or the coating steel pipe whole body are bored full aperture and wrap up geotechnological filter cloth and is made into busbar water pipe 10, carbon fiber pipe or coating steel pipe external diameter can adopt 24-32cm, wall thickness 1.5-3mm, also can directly adopt conductive plastics to make the conductive plastics band drain of inner core.Busbar water pipe is inserted in the centre position of adjacent four piles, busbar water pipe is connected with vacuum pump 15 by horizontal drain pipe 13, horizontal drain pipe 13 adopts pvc or ppr to manage, and horizontal drain pipe 13 accesses drain header 14 by branch drain by threeway, and drain header 14 connects vacuum pump 15.Busbar water pipe 10 is connected with the negative pole of dc source 12 by insulated copper heart yearn.Dc source 12 adopts the pulse DC power supply 12 of the square wave way of output.Above-mentioned electric osmose strengthens stake reinforcing flexible foundation device as shown in Figure 4 and Figure 5.
Electric osmose strengthens the construction method of stake reinforcing flexible foundation device, comprises the steps:
1) on strip carbon cloth 3, paste two and above wire 1 with conductive tape 2, form conducing composite material 5, prepare many conducing composite materials 5 according to requirement of engineering;
2) according to preformed pile 4 Bottom Shapes and size prefabricated steel shoe 8;
3) carbon fiber pipe or the coating steel pipe whole body are drilled with aperture and outsourcing geotechnique filter cloth, form busbar water pipe 10, or directly adopt conductive plastics to be made into the conductive plastics band drain of inner core;
4) paste many conducing composite materials 5 at preformed pile 4 surface uniform interval, adopt epoxy resin as adhesive material, conducing composite material 5 is vertically pasted along preformed pile 4;
5) conducing composite material 5 to be communicated with one another at the bottom of stake and at the bottom of being arranged on by steel shoe 8, conducing composite material is placed in steel shoe;
6) at preformed pile 4 and conducing composite material 5 outer wrap layer of steel wire net 6, gauze wire cloth 6 is fixed along the vertical installation at a certain distance of a preformed pile 4 fixing steel loop 7;
7) preformed pile 4 being provided with conducing composite material 5 and steel shoe 8 is pressed into soft foundation 16, conducing composite material 5 is connected with dc source 12 positive pole by wire 11, and conducing composite material 5 is used as anode; For the situation that soil compaction effect is not serious, directly preformed pile 4 is depressed into projected depth, and then connects wire 11; For the situation that soil compaction effect is serious, before piling, just stake side conducing composite material 5 is connected to the positive pole of dc source 12 by wire 11, in piling process, namely starts dc source 12 carry out electric osmose, reduce the excess pore water pressure that piling causes;
8) busbar water pipe 10 is drawn hole at design attitude to insert in soft foundation 16, be connected with dc source 12 negative pole by wire 11, busbar water pipe 10 is as negative electrode;
9) connect horizontal drain pipe 13 on busbar water pipe 10 top by threeway, horizontal drain pipe 13 to be aggregated on a drain header 14 and to connect vacuum pump 15;
10) starting dc source 12 and vacuum pump 15 makes the moisture of a side discharge ground to conduction gutter 10 electric field action is dirty;
11) piling terminates rear lasting electric osmose and draining, improves pile side friction, until bearing capacity of single pile reaches designing requirement or the anhydrous discharge of busbar water pipe 10.
Claims (9)
1. an electric osmose strengthens stake reinforcing flexible foundation device, it is characterized in that: comprise conducing composite material (5), described conducing composite material (5) is made up of the strip carbon cloth (3) being pasted with wire (1), and conducing composite material (5) is evenly vertically closely connected in preformed pile (4) surface by epoxy resin; Preformed pile (4) bottom is provided with steel shoe (8), and conducing composite material (5) bottom communicates with one another and is placed in steel shoe (8); There is layer of steel wire net (6) in conducing composite material (5) outer wrap, and along preformed pile (4), a fixing steel loop (7) is set at interval of certain distance; Conducing composite material (5) top is connected with the positive pole of dc source (12) by wire (11); Busbar water pipe (10) is inserted with in soft foundation (16) between preformed pile (4), busbar water pipe (10) is connected with vacuum pump (15) by horizontal drain pipe (13) on the one hand, is also connected with the negative pole of dc source (12) by wire (11) on the other hand.
2. electric osmose according to claim 1 strengthens stake reinforcing flexible foundation device, it is characterized in that: the precast reinforced concrete piles that described preformed pile (4) is arbitrary section.
3. electric osmose according to claim 1 strengthens stake reinforcing flexible foundation device, it is characterized in that: described conducing composite material (5) is for pasting two and above wire (1) by conductive tape (2), wire (1) available copper wire, stainless steel wire or titanium silk in strip carbon cloth (3) surface.
4. electric osmose according to claim 1 strengthens stake reinforcing flexible foundation device, it is characterized in that: conducing composite material (5) is vertically pasted along preformed pile (4), lay at preformed pile (4) surface uniform interval, and interconnected by wire (1) in preformed pile (4) bottom.
5. electric osmose according to claim 1 strengthens stake reinforcing flexible foundation device, it is characterized in that: described steel shoe (8) is channel-shaped, its cross sectional shape is identical with preformed pile (4) bottom section shape, and internal space ratio preformed pile (4) bottom is large.
6. electric osmose according to claim 1 strengthens stake reinforcing flexible foundation device, it is characterized in that: described wire (11) adopts aluminium core or copper core insulation line, adopts the mode that wire (11) exposed part and copper wire and carbon cloth (3) are intertwined and connected mutually when wire (11) is connected with conducing composite material (5).
7. electric osmose according to claim 1 strengthens stake reinforcing flexible foundation device, it is characterized in that: busbar water pipe (10) adopts carbon fiber pipe with holes or coating steel pipe, pipe outsourcing geotechnique filter cloth; Or adopt the conductive plastics band drain being made into inner core with conductive plastics.
8. electric osmose according to claim 1 strengthens stake reinforcing flexible foundation device, it is characterized in that: described horizontal drain pipe (13) adopts PVC or PE pipe, be connected with busbar water pipe (10) by threeway, horizontal drain pipe (13) is aggregated on a drain header (14), and drain header (14) connects vacuum pump (15).
9. electric osmose according to claim 1 strengthens stake reinforcing flexible foundation device, it is characterized in that: the pulse DC power supply that described dc source (12) adopts electric current to export with square.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520882048.XU CN205116152U (en) | 2015-11-05 | 2015-11-05 | Soft basic device is consolidated in electric osmose reinforcing stake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520882048.XU CN205116152U (en) | 2015-11-05 | 2015-11-05 | Soft basic device is consolidated in electric osmose reinforcing stake |
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| Publication Number | Publication Date |
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| CN205116152U true CN205116152U (en) | 2016-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520882048.XU Withdrawn - After Issue CN205116152U (en) | 2015-11-05 | 2015-11-05 | Soft basic device is consolidated in electric osmose reinforcing stake |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105297704A (en) * | 2015-11-05 | 2016-02-03 | 浙江大学城市学院 | Device for reinforcing soft foundation through electroosmosis reinforced piles and construction method |
| CN106769318A (en) * | 2017-01-04 | 2017-05-31 | 浙江大学城市学院 | A kind of pre-manufactured model stake for electric osmose joint stake reinforcing soft ground model test and preparation method thereof |
| CN108914981A (en) * | 2018-08-16 | 2018-11-30 | 兰州大学 | A kind of foundation pile corrosion protection system based on electric field action |
-
2015
- 2015-11-05 CN CN201520882048.XU patent/CN205116152U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105297704A (en) * | 2015-11-05 | 2016-02-03 | 浙江大学城市学院 | Device for reinforcing soft foundation through electroosmosis reinforced piles and construction method |
| CN105297704B (en) * | 2015-11-05 | 2017-03-29 | 浙江大学城市学院 | A kind of electric osmose strengthens stake reinforcing flexible foundation device and construction method |
| CN106769318A (en) * | 2017-01-04 | 2017-05-31 | 浙江大学城市学院 | A kind of pre-manufactured model stake for electric osmose joint stake reinforcing soft ground model test and preparation method thereof |
| CN108914981A (en) * | 2018-08-16 | 2018-11-30 | 兰州大学 | A kind of foundation pile corrosion protection system based on electric field action |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160330 Effective date of abandoning: 20170329 |