CN201406681Y - Pre-reinforcement processing device of mixed hydraulic reclamation soft soil foundation - Google Patents
Pre-reinforcement processing device of mixed hydraulic reclamation soft soil foundation Download PDFInfo
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- CN201406681Y CN201406681Y CN2009200854660U CN200920085466U CN201406681Y CN 201406681 Y CN201406681 Y CN 201406681Y CN 2009200854660 U CN2009200854660 U CN 2009200854660U CN 200920085466 U CN200920085466 U CN 200920085466U CN 201406681 Y CN201406681 Y CN 201406681Y
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- drainage
- sand pocket
- sand
- collecting well
- hydraulic reclamation
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Abstract
The utility model discloses a pre-reinforcement processing device of mixed hydraulic reclamation soft soil foundation, which relates to the technical field of pre-reinforcement processing of soft soilfoundation. The pre-reinforcement processing device is provided with a horizontal water drainage channel during a mixed hydraulic reclamation process, adopts a vacuum precompression combined electricelectroosmosis method to construct, actively does super soft soil consolidation early intervention during the hydraulic reclamation process and the early stage of hydraulic reclamation l, and createsa prophase condition for later reinforcement processing of foundation. The pre-reinforcement device is provided with reinforcing steel bar cage sandbag collecting wells on a construction site, and isprovided with a horizontal communicated water drainage sandbag between the reinforcing steel bar cage sandbag collecting wells, and a double-pipe mixed hydraulic reclamation material device, the reinforcing steel bar cage sandbag collecting wells, a vacuum precompression combined electric electroosmosis processing device and a collecting well pump drainage device are connected in turn from left to right. The pre-reinforcement device can prompt saturated soft soil to generate early strong solidification and presedimentation, enables foundation soil to better satisfy bearing deformation requirements in engineering use stage after preprocessing, and can greatly save time limit for a project and subsequent engineering processing cost.
Description
Technical field
The utility model relates to a kind of pre-consolidation process technical field of soft foundation, relates in particular to a kind of pre-consolidation process device of mixed hydraulically-filled soft soil foundation.Specifically, the utility model relates to the pre-consolidation process technology of ultra-soft foundation that regulation and project of reclamation by pumping filling are dredged in rivers navigation channel, lake etc., and this technology both had been suitable for the exploitation in soils such as coastal tidal, depression, also was suitable for the comprehensive utilization of desilting barged-in fill.
Background technology
Barged-in fill is the sedimentary soil that the silt particle in regulation and mediation rivers navigation channel and reclamation by pumping filling process forms through the waterpower hydraulic reclamation, and the silt particle that dredging is come out is used for sea reclamation, has become coastal cities and has alleviated land resources effective way in short supply.At grounds such as dredger fill sandy soil, mud, flyash, the reinforcement means that often adopts in the engineering has: two ash stakes, deep-mixed pile, vacuum method, preloading, slotting plastic draining board is in conjunction with dynamic compaction etc. in advance.But, because all there is certain limitation in various technologies, for the consolidation process in most barged-in fills place, the pre-plastic draining board of inserting has appearred in conjunction with strong processing method, the High vacuum compacting method that rams, the several different methods such as impacting close method, electroosmotic drainage, low position vacuum preloading method, dry method vibration sinking tube compacted gravel stone mar and multi-point stress vibrating-punching combined compacting of shaking again.
Barged-in fill has very high moisture content as a kind of artificial perturbation's soil usually at the hydraulic reclamation initial stage.Therefore, have scholar and engineering circle personage to think, reinforcing soft foundation should not only limit to if can just take some to help fixed measure in the hydraulic reclamation process after barged-in fill fills, and then may obtain consolidation effect and economic effect better.The pre-reinforcing of barged-in fill ground is meant in dredge fill, utilize physics or chemical method (mainly being to add inorganic or organic Admixture), it is fixed that barged-in fill can be deposited as early as possible, and make the ground after fixed have more high-intensity a kind of barged-in fill method for processing foundation.
Though the pre-thought of reinforcing of barged-in fill ground just occurred as far back as the eighties in 20th century; But pre-research of reinforcing just just really began, and only be in the junior stage in recent years for the barged-in fill ground.People such as Wen Haijia are more conducive to obtain effective consolidation process from handling the angle proof saturated dredger soft soil of reinforcing; People such as Liu Zhenjie are to indoor mixed hydraulically-filled research of sludge fly ash, and its mechanical property index has had significant improvement behind the discovery mud fly ash, and has obtained better engineering properties; People such as Wang Huajing have provided the settling character of several typical barged-in fills.People such as Wang Qing, Xiao Shufang, Liu Pinghui, Liu Ying, Li Zhen and Xie Hailan have carried out in-house laboratory investigation to utilizing cement and quicklime to the pre-consolidation process of barged-in fill, have determined the optimum cement of barged-in fill and the ratio that mixes of lime.In addition, adopt cement and lime serous fluid of dredger fill to be carried out consolidation process, obtained certain effect as additive; Other has the scholar to utilize flyash and saponification slag as the additive of serous fluid of dredger fill serous fluid of dredger fill to be carried out consolidation process respectively, and engineering geological property, the microstructure of the hydraulic reclamation soil sample after the reinforcing have obtained obvious improvement.
Although these progress are outstanding, because the regional restriction of barged-in fill, and do not have the improvement imagination of proposition to hydraulic reclamation equipment, make this achievement in research can not in time be converted into actual production power.
Summary of the invention
The purpose of this utility model is exactly to provide a kind of pre-consolidation process device of mixed hydraulically-filled soft soil foundation in order to overcome shortcoming and defect such as the extremely low and consolidation settlement amount of ultra-soft hydraulic fill foundation initial stage bearing capacity is excessive.
The purpose of this utility model is achieved in that
The utility model adopts and is different from the research thinking of handling natural weak soil, promptly form with mixed hydraulically-filled process and level is set to drainage channel, and in conjunction with adopting the construction of vacuum pre-pressed joint electroosmotic drainage, promptly initiatively carrying out the theory of the fixed early intervention of ultra-soft soil in the hydraulic reclamation process with the hydraulic reclamation initial stage, is that the condition in early stage of creating is handled in the ground stabilization in later stage.
Specifically, the utility model comprises construction plant, reinforcing cage sand pocket collecting well, horizontal communicated drainage sand pocket, two-tube mixed hydraulically-filled material equipment, vacuum pre-pressed joint electroosmotic drainage treatment facility and collecting well pump drainage equipment;
Be provided with reinforcing cage sand pocket collecting well on construction ground, between reinforcing cage sand pocket collecting well, be provided with horizontal communicated drainage sand pocket;
From left to right, two-tube mixed hydraulically-filled material equipment, reinforcing cage sand pocket collecting well, vacuum pre-pressed joint electroosmotic drainage treatment facility and collecting well pump drainage equipment are connected successively.
Operating principle of the present utility model:
The utility model is at land development and utilizations such as coastal tidal, depression, and hydraulic reclamation engineering such as waterway dredging, lake dredging up, lays drainage network before hydraulic reclamation in advance; Utilize the curing compound characteristics of strongization early, in the hydraulic reclamation process, realize the abundant mixing of weak soil and curing compound slurries, reach the ultra-soft barged-in fill and early intervene purpose the early stage of strongization; Utilize the quick precipitation of vacuum preloading at the ground formation initial stage, then adopt vacuum pre-pressed joint electroosmotic drainage consolidation process blowing filling soft soil foundation, for later stage ground intensive treatment is got ready.
The utlity model has following advantage and good effect:
1. both be fit to land developments such as coastal tidal, depression, also be suitable for the comprehensive utilization of desilting barged-in fill; Facilitate the saturated soft soil body to produce precuring and pre-sedimentation, make foundation soil can satisfy the load metamorphism requirement of engineering operational phase after treatment better.
2. be a kind of compound consolidation process blowing filling soft soil foundation new technology, it is blended together the organic coupling of several different methods, replenishes mutually, mutually promotes, and the blowing filling soft soil foundation new technology is rapidly and efficiently handled in common formation.
3. can improve the barged-in fill ground, reduce its compressibilty, reduce settling amount, gain in strength; Make through the barged-in fill ground after further handling to have higher bearing capacity, reduce the subsequent treatment expense.
4. accelerate barged-in fill ground consolidation speed, shorten the barged-in fill ground treatment construction phase, have important social economy and environmental benefit; Technology is simple, and mechanism is clear and definite, energy-conserving and environment-protective.
In a word, the utility model can facilitate the saturated soft soil body to produce early strongization and pre-sedimentation, make foundation soil after preliminary treatment, can satisfy the load metamorphism requirement of engineering operational phase better, can significantly save duration and follow-up engineering disposal cost, have good social economy and environmental benefit.
Description of drawings
Fig. 1 is the structural representation of utility model;
Fig. 2 is the structural representation of drainage network (reinforcing cage sand pocket collecting well and horizontal communicated drainage sand pocket);
Fig. 3 is that the electroosmosis electrode of vacuum pre-pressed joint electroosmotic drainage treatment facility is buried layout plan underground.
Wherein:
The 1-construction plant;
2-reinforcing cage sand pocket collecting well,
2.1-the outer reinforcement cage, 2.2-internal layer reinforcing cage, the double-deck sand pocket of 2.3-;
2.4-back-up sand;
The horizontal communicated drainage sand pocket of 3-,
3.1-horizontal drainage sand pocket, 3.2-conduct electricity reinforcing bar, the 3.3-back-up sand;
The two-tube mixed hydraulically-filled material equipment of 4-,
4.1-strand is inhaled ship, the 4.2-dredging tube, and the 4.3-dredge pump,
4.4-the hydraulic reclamation pipe, the 4.5-floating drum, the 4.6-agitator,
4.7-pulp-absorbing pipe 4.8-pulp absorbing pump 4.9-blows the slurry pipe;
5-vacuum pre-pressed joint electroosmotic drainage treatment facility,
5.1-the anode reinforcing bar, 5.2-anode connecting line, the 5.3-power line,
5.4-constant-current supply;
6-collecting well pump drainage equipment,
6.1-suction water pipe, the 6.2-jet pump, the 6.3-gutter,
6.4-vacuum diaphragm.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further specified:
One, overall
As Fig. 1, this device comprises construction plant 1, reinforcing cage sand pocket collecting well 2, horizontal communicated drainage sand pocket 3, two-tube mixed hydraulically-filled material equipment 4, vacuum pre-pressed joint electroosmotic drainage treatment facility 5 and collecting well pump drainage equipment 6;
1 be provided with reinforcing cage sand pocket collecting well 2 on construction ground, between reinforcing cage sand pocket collecting well 2, be provided with horizontal communicated drainage sand pocket 3;
From left to right, two-tube mixed hydraulically-filled material equipment 4, reinforcing cage sand pocket collecting well 2, vacuum pre-pressed joint electroosmotic drainage treatment facility 5 and collecting well pump drainage equipment 6 are connected successively.
Two, each functional block
1, reinforcing cage sand pocket collecting well 2
As Fig. 2, described reinforcing cage sand pocket collecting well 2 comprises outer reinforcement cage 2.1, internal layer reinforcing cage 2.2, double-deck sand pocket 2.3 and back-up sand 2.4;
Outer reinforcement cage 2.1 and internal layer reinforcing cage 2.2 constitute collecting well, place double-deck sand pocket 2.3 in the middle of it, fill up back-up sand 2.4 in the double-deck sand pocket 2.3.
Reinforcing cage sand pocket collecting well 2 will around water in the weak soil come together in the well, again as the usefulness of the negative electrode of later stage electroosmotic drainage reinforcing flexible foundation, after ground stabilization is finished, can extract recycling simultaneously.
2, horizontal communicated drainage sand pocket 3
As Fig. 2, described horizontal communicated drainage sand pocket 3 comprises horizontal drainage sand pocket 3.1, conduction reinforcing bar 3.2 and back-up sand 3.3;
In the back-up sand 3.3 load level draining sand pockets 3.1, horizontal drainage sand pocket 3.1 is connected with double-deck sand pocket 2.3, forms the drainage network that is communicated with; Conduction reinforcing bar 3.2 is positioned in the back-up sand 3.3, is connected with outer reinforcement cage 2.1, forms closed galvanic circle.
According to different initial substratum soil nature and construction condition, the level that select to be fit to is to drainage channel, mainly considers to blow in geosynthetics, large-scale sand wick, plastic draining board or the mud to add layer of sand and mix and use.
Horizontal drainage sand pocket 3.1 is a nylon braided bag, and back-up sand 3.3 is a medium coarse sand.
Being provided with of drainage network must be carried out before hydraulic reclamation and in the hydraulic reclamation process, and setting completed, and fixed promptly the beginning carries out, and the deadweight of having quickened hydraulic-filled soft clay is fixed.
3, two-tube mixed hydraulically-filled material equipment 4
As Fig. 1, described two-tube mixed hydraulically-filled material equipment 4 comprises strand suction ship 4.1, dredging tube 4.2, dredge pump 4.3, hydraulic reclamation pipe 4.4, floating drum 4.5, agitator 4.6, pulp-absorbing pipe 4.7, pulp absorbing pump 4.8 and blows slurry pipe 4.9;
Dredge pump 4.3 is fixed in strand to be inhaled on the ship 4.1, and dredging tube 4.2, dredge pump 4.3, hydraulic reclamation pipe 4.4 and floating drum 4.5 are connected in turn, agitator 4.6, pulp-absorbing pipe 4.7, pulp absorbing pump 4.8 and blow slurry and manage 4.9 and be connected in turn.
4, vacuum pre-pressed joint electroosmotic drainage treatment facility 5
As Fig. 3, vacuum pre-pressed joint electroosmotic drainage treatment facility 5 comprises anode reinforcing bar 5.1, anode connecting line 5.2, power line 5.3 and constant-current supply 5.4;
Anode reinforcing bar 5.1 is interconnected by anode connecting line 5.2 according to certain arrangement, connects constant-current supply 5.4 anodes by power line 5.3, and outer reinforcement cage 2.1 is connected with constant-current supply 5.4 negative electrodes by power line 5.3 as negative electrode.
Hydraulic reclamation is laid vacuum diaphragm 6.4 on the ground top layer after forming ground and table water drainage, carries out collecting well earlier and vacuumizes precipitation, then carries out vacuum pre-pressed joint electroosmotic drainage reinforcing flexible foundation.
1. electric osmose ratio juris
Insert metal electrode and pass to direct current in the saturated soft clay ground, because the DC electric field effect, the moisture in the soil flows to negative electrode from anode.Water is got rid of (adopt well-points dewatering as negative electrode usually, and drawn water by the well point) from negative electrode, and do not allow water near anode, replenish, can get rid of water in soil gradually by electroosmosis, thereby strengthen the fixed of ground, improve foundation strength.
2. electrode material
According to the character of soft subgrade soil, select electrode material.The optional reinforcing bar of electrode material, aluminium bar, iron staff etc.Anode adopts round bar, inserts saturated dredger soft soil around the collecting well certain distance, and negative electrode utilizes the reinforcing cage of collecting well, and collecting well is provided with suction water pipe, with jet pump pump drainage ponding outside the venue.
3. arrangement of electrodes
When electroosmotic drainage was used for reinforcing soft foundation usually, electrode was a vertical array, and electrode arrangement mode has three kinds substantially: hexagonal arrangement, the square arrangement that does not in the ranks stagger and the square arrangement that in the ranks staggers, suitably select according to the arrangement and the site condition of collecting well.
4. power supply
Adopt silicon controlled rectifier (SCR) as electrode supply, constant operating voltage is a low pressure between the anodic-cathodic, and every day, electric osmose was 8～12 hours, and while pump drainage water.
5, collecting well pump drainage equipment 6
As Fig. 1, described collecting well pump drainage equipment 6 comprises suction water pipe 6.1, jet pump 6.2, gutter 6.3 and vacuum diaphragm 6.4.
Vacuum diaphragm 6.4 is covered on the blast-filled ground, and suction water pipe 6.1 is positioned in the internal layer reinforcing cage 2.2, and suction water pipe 6.1, jet pump 6.2 and gutter 6.3 are connected successively.
Claims (6)
1, a kind of device of pre-consolidation process of mixed hydraulically-filled soft soil foundation is characterized in that:
Comprise construction plant (1), reinforcing cage sand pocket collecting well (2), horizontal communicated drainage sand pocket (3), two-tube mixed hydraulically-filled material equipment (4), vacuum pre-pressed joint electroosmotic drainage treatment facility (5) and collecting well pump drainage equipment (6);
(1) is provided with reinforcing cage sand pocket collecting well (2) on construction ground, is provided with horizontal communicated drainage sand pocket (3) between reinforcing cage sand pocket collecting well (2);
From left to right, two-tube mixed hydraulically-filled material equipment (4), reinforcing cage sand pocket collecting well (2), vacuum pre-pressed joint electroosmotic drainage treatment facility (5) and collecting well pump drainage equipment (6) are connected successively.
2, by the described device of claim 1, it is characterized in that:
Described reinforcing cage sand pocket collecting well (2) comprises outer reinforcement cage (2.1), internal layer reinforcing cage (2.2), double-deck sand pocket (2.3) and back-up sand (2.4);
Outer reinforcement cage (2.1) and internal layer reinforcing cage (2.2) constitute collecting well, place double-deck sand pocket (2.3) in the middle of it, fill up back-up sand (2.4) in the double-deck sand pocket (2.3).
3, by the described device of claim 1, it is characterized in that:
Described horizontal communicated drainage sand pocket (3) comprises horizontal drainage sand pocket (3.1), conduction reinforcing bar (3.2) and back-up sand (3.3);
In back-up sand (3.3) the load level draining sand pocket (3.1), horizontal drainage sand pocket (3.1) is connected with double-deck sand pocket (2.3), forms the drainage network that is communicated with; Conduction reinforcing bar (3.2) is positioned in the back-up sand (3.3), is connected with outer reinforcement cage (2.1), forms closed galvanic circle.
4, by the described device of claim 1, it is characterized in that:
Described two-tube mixed hydraulically-filled material equipment (4) comprises strand suction ship (4.1), dredging tube (4.2), dredge pump (4.3), hydraulic reclamation pipe (4.4), floating drum (4.5), agitator (4.6), pulp-absorbing pipe (4.7), pulp absorbing pump (4.8) and blows slurry pipe (4.9);
Dredge pump (4.3) is fixed in strand to be inhaled on the ship (4.1), and dredging tube (4.2), dredge pump (4.3), hydraulic reclamation pipe (4.4) and floating drum (4.5) are connected in turn, and agitator (4.6), pulp-absorbing pipe (4.7), pulp absorbing pump (4.8) and blowing starched and managed (4.9) and be connected in turn.
5, by the described device of claim 1, it is characterized in that:
Described vacuum pre-pressed joint electroosmotic drainage treatment facility (5) comprises anode reinforcing bar (5.1), anode connecting line (5.2), power line (5.3) and constant-current supply (5.4);
Anode reinforcing bar (5.1) is interconnected by anode connecting line (5.2) according to certain arrangement, connect constant-current supply (5.4) anode by power line (5.3), outer reinforcement cage (2.1) is connected with constant-current supply (5.4) negative electrode by power line (5.3) as negative electrode.
6, by the described device of claim 1, it is characterized in that:
Described collecting well pump drainage equipment (6) comprises suction water pipe (6.1), jet pump (6.2), gutter (6.3) and vacuum diaphragm (6.4).
Vacuum diaphragm (6.4) is covered on the blast-filled ground, and suction water pipe (6.1) is positioned in the internal layer reinforcing cage (2.2), and suction water pipe (6.1), jet pump (6.2) and gutter (6.3) are connected successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200854660U CN201406681Y (en) | 2009-04-30 | 2009-04-30 | Pre-reinforcement processing device of mixed hydraulic reclamation soft soil foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200854660U CN201406681Y (en) | 2009-04-30 | 2009-04-30 | Pre-reinforcement processing device of mixed hydraulic reclamation soft soil foundation |
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| Publication Number | Publication Date |
|---|---|
| CN201406681Y true CN201406681Y (en) | 2010-02-17 |
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| CN2009200854660U Expired - Fee Related CN201406681Y (en) | 2009-04-30 | 2009-04-30 | Pre-reinforcement processing device of mixed hydraulic reclamation soft soil foundation |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102094414A (en) * | 2011-04-02 | 2011-06-15 | 河海大学 | Method for treating deep soft soil foundation by combining chemical electro-osmosis method and vacuum preloading method |
| CN102561306A (en) * | 2011-12-30 | 2012-07-11 | 上海广联建设发展有限公司 | Efficient deep-layer vacuum soil body dredging and strengthening method |
| CN103031836A (en) * | 2013-01-08 | 2013-04-10 | 中交四航工程研究院有限公司 | Method for quickly building road on new reclamation sludge foundation |
| CN103898894A (en) * | 2014-04-11 | 2014-07-02 | 清华大学 | Method for solidifying soft soil foundation by solar electroosmosis |
-
2009
- 2009-04-30 CN CN2009200854660U patent/CN201406681Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102094414A (en) * | 2011-04-02 | 2011-06-15 | 河海大学 | Method for treating deep soft soil foundation by combining chemical electro-osmosis method and vacuum preloading method |
| CN102561306A (en) * | 2011-12-30 | 2012-07-11 | 上海广联建设发展有限公司 | Efficient deep-layer vacuum soil body dredging and strengthening method |
| CN103031836A (en) * | 2013-01-08 | 2013-04-10 | 中交四航工程研究院有限公司 | Method for quickly building road on new reclamation sludge foundation |
| CN103031836B (en) * | 2013-01-08 | 2016-03-09 | 中交四航工程研究院有限公司 | A kind of method of building road on new hydraulically filled sludge ground fast |
| CN103898894A (en) * | 2014-04-11 | 2014-07-02 | 清华大学 | Method for solidifying soft soil foundation by solar electroosmosis |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100217 Termination date: 20110430 |