CN101148873A - Method for reinforcing composite vacuum prepressing soft soil foundation - Google Patents
Method for reinforcing composite vacuum prepressing soft soil foundation Download PDFInfo
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- CN101148873A CN101148873A CNA2007101351325A CN200710135132A CN101148873A CN 101148873 A CN101148873 A CN 101148873A CN A2007101351325 A CNA2007101351325 A CN A2007101351325A CN 200710135132 A CN200710135132 A CN 200710135132A CN 101148873 A CN101148873 A CN 101148873A
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Abstract
The composite vacuum pre-pressing soft foundation stabilizing process with vacuum pressing precipitation and electroosmosis precipitation includes the following steps: 1. establishing a site draining system, arranging a vacuum electroosmosis device, and setting a vacuum pressing sealing layer on the ground; 2. turning on the vacuum pump for vacuum pressing precipitation; 3. activating the circuit for vacuum electroosmosis precipitation; and 4. turning off the vacuum electroosmosis device and the vacuum pump after reaching the consolidation degree of 85 % and performing the post ground treatment and further stabilizing. The present invention combines vacuum pressing precipitation and electroosmosis precipitation to reach high consolidation degree of the soft foundation and shorten the construction period.
Description
Technical field
The present invention relates to a kind of foundation reinforcement method, be specifically related to a kind of foundation reinforcement method of large tracts of land deep layer weak soil, be applicable to stream mud, mud, mucky soil ground, be particularly useful for the place to bearing capacity the high but reinforced soft soil ground general to deformation requirements.
Background technology
In construction work; run into big weak soil of some water content or weak soil layer through regular meeting; the characteristics of this soil are that water content is big, compressibilty is high, intensity is low, bad hydraulic permeability; for this kind ground; especially large-area construction; when on this ground, building harbour, airport, road and house etc., need handle and reinforce ground.The process of reinforcing soft ground has a variety of, as composite foundation, vacuum method, vacuum electroosmosis precipitation method etc.
Vacuum preloading is as a kind of large tracts of land reinforcing soft foundation technology, and this method is low because of its construction costs, and consolidation effect is good, after the eighties, has obtained extensive use in China.Its basic skills is: plastic draining board is set as the vertical drainage passage in the soft foundation that needs reinforcement, be engaged in the horizontal drainage passage of the sand cushion of laying on the ground, netted draining chimney filter composition, and cover air-locked diaphragm seal thereon, by being embedded in the water absorption channel in the sand cushion, adopt vacuum plant to bleed, and through film device air in the ground in the film is discharged, making draught head of the inside and outside generation of film, this draught head is exactly the load that acts on the ground.Along with constantly being discharged from of air in the film, draught head increases gradually, and the water in the ground, gas constantly are discharged from and make the ground generation fixed, thereby improves the intensity of soft foundation.The soil body can not produce shear stress during vacuum preloading, adds up even the vacuum load is disposable, and foundation soil shear failure can not take place yet.The ground that is inserted with plastic draining board is vacuumized, if the supposition negative pressure is not lost by plastic draining board, then negative pressure all works in the plastic draining board depth bounds, almost becomes distributed rectangular, so it is effective to hold one's breath, and the vacuum height, consolidation effect is good.Under the situation that produces the same vertical distortion, the consolidation effect of vacuum method is better than additive method.
But this method also has some shortcomings, so that has limited the promotion and application of this method to a certain extent, and its major defect is as follows:
1, vacuum preloading generally is used for reinforcing soft ground, and the transmission coefficient of weak soil is lower, under the situation that vertical drainage body is not set, and the poor effect of reinforcing, at the very high ground of transmission coefficient, vacuum preloading does not have due consolidation effect equally.According to mechanism of vacuum preloading, when stabilization zone foundation soil transmission coefficient is bigger, and under the less situation of stabilization zone surrounding soil transmission coefficient, vacuum pre-press reinforcing just can be obtained effect preferably.Generally there is not such situation in natural ground.To inserting the vacuum preloading ground of plastic draining board, be provided with the drainage exhaust passage after, also only to transmission coefficient 〉=10
-5Work in the place of cm/s, the littler mud of transmission coefficient fixed do not had effect;
2, vacuum preloading needs to lay the 500mm sand cushion on ground, as the transverse row water layer, but when practice of construction, on grounds such as mud, owing to plant equipment can't be marched into the arena, and can't realize;
3, the bearing capacity of vacuum preloading is also not high, only can reach 80kPa, can't satisfy the requirement in relatively large bearing capacity place;
4, because the restriction of factor such as equipment, required chronic of traditional vacuum precompressed needed 3 months or the longer time.
The existence of above shortcoming has all limited expansion and the application of vacuum preloading method in engineering.
Summary of the invention
The object of the invention provides a kind of method for reinforcing composite vacuum prepressing soft soil foundation, use this complex method, the advantage that had both kept the vacuum preloading method makes it be applicable to reinforcing to the lower weak soil of transmission coefficient again, makes the ground after the reinforcing have higher capacity.
For achieving the above object, the technical solution used in the present invention is: a kind of method for reinforcing composite vacuum prepressing soft soil foundation, comprise vacuum preloading precipitation and electroosmosis dewatering, and its construction sequence is as follows:
A) set up the yard drain system, and arrange the vacuum electroosmosis device, the vacuum preloading sealant is set on the face of land;
B) open vacuum pump, carry out vacuum preloading precipitation;
C) when carrying out step b) maybe the water flow in carrying out step b) be reduced to initial flow below 1/5 after, open the circuit of vacuum electroosmosis device, carry out electroosmosis dewatering and vacuum preloading precipitation synchronously;
D) when the degree of consolidation reach 〉=85% the time, close vacuum electroosmosis device and vacuum pump, carry out face of land post-processed and reinforce again.
In the said method, vacuum preloading can be PE or PVC film with sealant, also can be that thickness is the mudding layer that adopts 700mm above; Adopt vacuum preloading of the prior art and electroosmosis dewatering method linked together, plastic draining board and positive and negative electrode are inserted in ground on the scene, vacuum prepressing device is installed, connects positive and negative electrode, last covering vacuum film, vacuum preloading precipitation begins, the draught head that utilizes vacuum diaphragm and atmosphere is as the load on the ground, and the water in the ground, gas are constantly discharged along the drainage system of having set up, and it is fixed that ground is taken place; In the time of vacuum preloading or treat water yield obviously reduce the back (can save electric consumption), open circuit, electroosmosis dewatering begins, hydrone is discharged along drainage system by vacuumizing; Treat that the vacuum electroosmosis joint preloading finishes back (degree of consolidation reach 〉=) at 85% o'clock, pulls out the positive and negative electrode that electroosmosis dewatering is used, last smooth place.When adopting electroosmosis dewatering, the transmission coefficient in weak soil place can improve about 100 times, on the one hand, makes the vacuum preloading method also can be at transmission coefficient 10
-6～10
-7Mud (not containing sand) earthen foundation use in reinforcing, on the other hand, accelerated the consolidation time of vacuum preloading.Described drainage system comprises horizontal drainage system and vertical drainage system, and described horizontal drainage system is made up of weeper drain, horizontal vacuum pipe and collecting well, and described vertical drainage system is made up of plastic draining board and positive and negative electrode.Described positive and negative electrode adopts the good material of electric conductivity such as reinforcing bar, aluminum pipe or copper pipe, electric current can be imported the weak soil deep layer, makes the better effects if of electroosmosis dewatering in the weak soil deep layer.
In the technique scheme, in step d), can adopt multiple scheme to carry out post-processed and reinforcing again,, obtain the ground of different bearer power thus according to requirement of actual application.
The first, the post-processed in the described step d) are dismounting vacuum electroosmosis devices, carry out levelling of the land, and described the reinforcing again is lay plural layer geotechnique bag on smooth place, and every lamination in fact.
Further technical scheme, described geotechnique's bag is connected respectively with the adjacent corresponding bight of geotechnological bag of layer for four jiaos, and the earth bag of neighbouring two interlayers is staggered stack.
Above, lay geotechnique's bag on the place after smooth, the geotechnique's bag that applies behind the prestressing force can improve the bearing capacity in place apace, can adjust the complicated load that superstructure transmits simultaneously, and evenly down decay apace.
It two is, post-processed in the described step d) is dismounting vacuum electroosmosis device, carries out levelling of the land, the described reinforcing again be, rams by force on smooth place, and described strong rammer carries out 3 times at least, the strong tamping energy that rams of first pass is got 900～1200KNm, spacing 4.5～7m, quincuncial arrangement, every clicks 2～4 is hit, when last two hit the injection amount less than 100mm, first pass rammed end by force; Second time the strong tamping energy that rams is got 1200～1800KNm, spacing 4.5～7m, and quincuncial arrangement, every clicks 2～4 is hit; The 3rd time strong the rammer to full rammed, and rams seal overlap joint 1/3, and every clicks 1～2 is hit.
It three is that described face of land post-processed is meant the reparation diaphragm seal, the described reinforcing again is meant, stopped vacuum pump 1 to 2 day, the soil aperture system is recovered, carry out vacuum preloading and electric osmose once more, extremely moisture the reducing in processed zone stopped to vacuumize and electric osmose in 30%～35% o'clock, removed the vacuum electroosmosis device, ground grading.
Further technical scheme when carrying out described vacuum electroosmosis precipitation, is carried out piling prepressing, and described piling prepressing method is, the cofferdam is set around processing region, and the water of extracting out during with vacuum electroosmosis precipitation injects in the cofferdam, carries out piling prepressing.
Wherein, the method to set up in described cofferdam is that the vacuum preloading diaphragm seal tiles to the ground of the loading zone outside, covers clay on it, builds up the cofferdam.
Perhaps, the method to set up in described cofferdam is that the excavation groove is embedded in diaphragm seal in the groove outside loading zone, covers clay on it, builds up the cofferdam.
Reinforcing principle of the present invention:
A, place weak soil are behind vacuum preloading, and groundwater table reduces, and the bottom weak soil is under the precipitating, pre-pressing load action, and excess pore water pressure increases, and with the dissipation of work excess pore water pressure, the bottom weak soil obtains tentatively fixed;
B, when vacuum preloading and electroosmosis dewatering combination, weak soil in the plastic draining board scope, under the acting in conjunction of negative pressure of vacuum, electrophoresis (oozing), baking, most pore water is discharged through plastic draining board, under the vacuum preloading effect, the water content of weak soil descends rapidly, in the precompressed process, the increment of effective stress is that each is to equating, shear stress does not increase, and can not cause the shear failure of the soil body, can be evacuated to maximum vacuum continuously, thereby shortened time of precompressed, waiting the intensity that under stress increment, makes soil to increase along with the fixed of soil;
Behind c, the vacuum preloading electroosmosis dewatering, the water content of place weak soil is reduced near the plastic limit, thereby greatly reduces because of the strong probability that " spongy soil " occur that rams, and for further ramming the condition of having created by force, also can strengthen tamping energy simultaneously.The place weak soil will excite very big excess pore water pressure under the tamping energy effect after the increasing, with the dissipation of work excess pore water pressure, the bottom weak soil obtains fixed once more;
D, weak soil place are after above-mentioned processing, bearing capacity reaches 80～150Kpa, lay earth bag thereon, earth bag is applied external force, after earth bag flattened, the soil body in the earth bag was cut bloated, produced tension force in the sack, sack tension force makes the contact force N between soil particle increase, and the intensity of soil increases (frictional force F=uN) thereupon.Behind the place mat through the multilayer earth bag, bearing capacity can reach more than the 200Kpa on it.
Because the technique scheme utilization, the present invention compared with prior art has following advantage:
1. the present invention uses the combination of vacuum preloading and electroosmosis dewatering, after utilizing electroosmosis dewatering, strengthened the transmission coefficient of reinforcing in the scope of place (can improve more than 100 times) greatly, made the very little muck foundation of transmission coefficient that can not adopt the vacuum preloading method originally can be suitable for the vacuum preloading method;
2. adopt vacuum preloading and electroosmosis dewatering United Technologies, owing to spread vacuum diaphragm, played insulating effect simultaneously, can adopt higher voltage (more than the 40V, in the past, using the 36V safe voltage) for avoiding Danger Electric shock risk, add that positive and negative electrode can adopt good aluminum pipe of electric conductivity or copper pipe, electric current can import the weak soil deep layer, and the effect of electroosmosis dewatering is improved, and the effective depth of handling weak soil can reach more than the 20m;
3. adopt vacuum preloading and electroosmosis dewatering United Technologies,, shortened the consolidation time (pumpdown time was at 20～35 days) of weak soil greatly because the effect of electric osmose power is compared with independent employing vacuum preloading.
4. adopt vacuum preloading and electroosmosis dewatering United Technologies, owing to laid diaphragm seal on the place, and cover water layer thereon, atmospheric pressure and hydraulic pressure are joined together together as foundation load, water layer is thick more favourable more, thereby weather conditions (as rainfall) are become favorable factor from unfavorable factor, further improved the bearing capacity in place simultaneously.
5. the weak soil place is after above-mentioned processing, and the above bearing capacity of 6m can reach 100～150kPa, again through earth bag change fill out after, more than the surface bears Li Keda 200kPa, thereby plant equipment can directly enter on the place, improves efficiency of construction greatly.
Description of drawings
Fig. 1 is the construction soil layer cross-sectional schematic of the embodiment of the invention one.
Wherein: 1, plastic draining board; 2, diaphragm seal; 3, positive and negative electrode; 4, horizontal vacuum pipe; 5, vacuum pump; 6, the layer of vertically holding one's breath; 7, airtight groove.
The specific embodiment
Below in conjunction with drawings and Examples the present invention is further described:
Embodiment one: referring to shown in Figure 1, and a kind of method for reinforcing composite vacuum prepressing soft soil foundation, this method comprises vacuum preloading precipitation and electroosmosis dewatering two parts, its construction sequence is as follows:
A) the yard drain system is set up in smooth place; Comprise horizontal drainage system and vertical drainage system, described horizontal drainage system is made up of weeper drain, horizontal vacuum pipe 4 and collecting well, and described vertical drainage system is made up of plastic draining board and positive and negative electrode 2.
On the place of handling, insert plastic draining board 1, the minimum 1m * 1m of plastic draining distance between plates, quincuncial arrangement, plastic draining board must be selected the high performance plastics band drain for use, guarantee the unimpeded required mechanical strength of vacuum, filter membrane adopts the high geotextiles of hot strength, guarantees that the vacuum system draining is unimpeded; Insert positive and negative electrode, require to conduct electricity very well, for example better aluminium bar of reinforcing bar or electric conductivity or copper rod etc., the same plastic draining board of the degree of depth, the same plastic draining board of spacing;
The electric osmose device is installed, its energising situation of test under safe voltage, the vacuum level pipe directly is connected with plastic draining board, after finishing, construction seals with the sealing material, want strict sealing during installation, must not leak gas, flap valve and gate valve are set in the vacuum road, avoid the very fast reduction of vacuum in the film, and be used for controlling and intermittently bleed and keep the stable of vacuum;
Lay the PVC composite geo-membrane, the sealing film is combined into a monoblock plastic foil greater than processing area in the ground stabilization district, at vertically hold one's breath floor 6 and surround one of ground stabilization district arranged outside, have airtight groove 7 on it, with diaphragm seal 2 bury underground with airtight groove 7 in, cover clay on it, build up the cofferdam.After the first floor plastic foil has been laid, should check whether seam crossing has gas leakage, and in time repair, with spreading with using the earth bag press mold, the film that will complete that prevents to blow sweeps away or tears in the membrane process of shop, forbids that the constructor the hard end footwear operation or walking on film, in case film is scratched, when the shop film is finished, a spot of vacuum pump is installed is carried out work, the film that lays is held.
B) vacuum preloading precipitation, vacuum pump 5 is bled, and makes draught head of the inside and outside generation of film, and this draught head is exactly the load that acts on the ground.Along with constantly being discharged from of air in the film, draught head increases gradually, and the water in the ground, gas constantly are discharged from and make the ground generation fixed.
C) after the water yield at vacuum preloading precipitation obviously reduces (be often referred to water flow and be reduced to below 1/5 of initial flow), open circuit, carry out electroosmosis dewatering, hydrone is discharged along plastic draining board by vacuumizing.
D) when the degree of consolidation greater than 85%, vacuum is greater than 80kPa in the band drain, vacuum preloading and electroosmosis dewatering finish, and pull out positive and negative electrode, remove the vacuum electroosmosis device, smooth place.
E) carry out 3 times low-energy strong-ramming on smooth intact place, the tamping energy of first pass low-energy strong-ramming is got 900～1200KNm, spacing 4.5～7m, quincuncial arrangement, every clicks 2～4 is hit, and when last two hit the injection amount less than 100mm, the first pass low-energy strong-ramming finished; The tamping energy of second time low-energy strong-ramming is got 1200～1800KNm, spacing 4.5～7m, and quincuncial arrangement, every clicks 2～4 is hit; The 3rd time low-energy strong-ramming rams for full, rams seal overlap joint 1/3, and every clicks 1～2 is hit.
F) spread several layers in geotechnique's bag on the ground on the scene, geotechnological bag four jiaos are connected with the geotechnique bag corresponding bight that layer is adjacent together respectively, and the earth bag of neighbouring two interlayers is staggered stack, after every layer of laying is smooth, uses the bobbing machine compacting.
Embodiment two: a kind of method for reinforcing composite vacuum prepressing soft soil foundation, this method comprise vacuum preloading precipitation and electroosmosis dewatering two parts, and its construction sequence is as follows:
A) the yard drain system is set up in smooth place; Comprise horizontal drainage system and vertical drainage system, described horizontal drainage system is made up of weeper drain, horizontal vacuum pipe and collecting well, and described vertical drainage system is made up of plastic draining board and positive and negative electrode.
On the place of handling, insert plastic draining board, plastic draining board minimum spacing 1m * 1m, quincuncial arrangement, plastic draining board must be selected the high performance plastics band drain for use, guarantee the unimpeded required mechanical strength of vacuum, filter membrane adopts the high geotextiles of hot strength, guarantees that the vacuum system draining is unimpeded; Insert positive and negative electrode, require to conduct electricity very well, for example aluminium bar or copper rod etc., the same plastic draining board of the degree of depth and spacing;
The electric osmose device is installed, its energising situation of test under safe voltage, the vacuum level pipe directly is connected with plastic draining board, after finishing, construction seals with the sealing material, want strict sealing during installation, must not leak gas, flap valve and gate valve are set in the vacuum road, avoid the very fast reduction of vacuum in the film, and be used for controlling and intermittently bleed and keep the stable of vacuum;
Lay the PVC composite geo-membrane, the sealing film is combined into a monoblock plastic foil greater than processing area in the ground stabilization district, and the vacuum preloading diaphragm seal tiles to the ground of the loading zone outside, covers clay on it, builds up the cofferdam.After the first floor plastic foil has been laid, should check whether seam crossing has gas leakage, and in time repair, with spreading with using the earth bag press mold, the film that will complete that prevents to blow sweeps away or tears in the membrane process of shop, forbids that the constructor the hard end footwear operation or walking on film, in case film is scratched, when the shop film is finished, a spot of vacuum pump is installed is carried out work, the film that lays is held.
B) vacuum preloading precipitation, vacuum pump is bled, and makes draught head of the inside and outside generation of film, and this draught head is exactly the load that acts on the ground.Along with constantly being discharged from of air in the film, draught head increases gradually, and the water in the ground, gas constantly are discharged from and make the ground generation fixed.
C) the water yield of vacuum preloading precipitation be reduced to initial flow below 1/5 after, open circuit, carry out electroosmosis dewatering, hydrone is discharged along plastic draining board by vacuumizing.The moisture of extracting out is introduced in the cofferdam, loads as precompressed.
D) when the degree of consolidation greater than 85%, when vacuum is greater than 80kPa in the band drain, stop vacuum pump running 1 to 2 day, get rid of the water in the cofferdam, and repairing vacuum seal film.
E) open vacuum pump again and carry out vacuum preloading, and open vacuum electroosmosis precipitation, water content is lower than at 35% o'clock to the ground, stops vacuum preloading and electric osmose, pulls out positive and negative electrode, removes the vacuum electroosmosis device, smooth place.
Claims (8)
1. method for reinforcing composite vacuum prepressing soft soil foundation, it is characterized in that: this method comprises vacuum preloading precipitation and electroosmosis dewatering, its construction sequence is as follows:
A) set up the yard drain system, and arrange the vacuum electroosmosis device, the vacuum preloading sealant is set on the face of land;
B) open vacuum pump, carry out vacuum preloading precipitation;
C) when carrying out step b) maybe the water flow in carrying out step b) be reduced to initial flow below 1/5 after, open the circuit of vacuum electroosmosis device, carry out electroosmosis dewatering and vacuum preloading precipitation synchronously;
D) when the degree of consolidation reach 〉=85% the time, close vacuum electroosmosis device and vacuum pump, carry out face of land post-processed and reinforce again.
2. method for reinforcing composite vacuum prepressing soft soil foundation according to claim 1, it is characterized in that: the post-processed in the described step d) is dismounting vacuum electroosmosis device, carries out levelling of the land, the described reinforcing again is lay plural layer geotechnique bag on smooth place, and every lamination to be real.
3. method for reinforcing composite vacuum prepressing soft soil foundation according to claim 2 is characterized in that: described geotechnique's bag is connected respectively with the adjacent corresponding bight of geotechnique's bag of layer for four jiaos, and the earth bag of neighbouring two interlayers is staggered stack.
4. method for reinforcing composite vacuum prepressing soft soil foundation according to claim 1, it is characterized in that: the post-processed in the described step d) is dismounting vacuum electroosmosis device, carries out levelling of the land, the described reinforcing again be, rams by force on smooth place, and described strong rammer carries out 3 times at least, the strong tamping energy that rams of first pass is got 900～1200KNm, spacing 4.5～7m, quincuncial arrangement, every clicks 2～4 is hit, when last two hit the injection amount less than 100mm, first pass rammed end by force; Second time the strong tamping energy that rams is got 1200～1800KNm, spacing 4.5～7m, and quincuncial arrangement, every clicks 2～4 is hit; The 3rd time strong the rammer to full rammed, and rams seal overlap joint 1/3, and every clicks 1～2 is hit.
5. method for reinforcing composite vacuum prepressing soft soil foundation according to claim 1, it is characterized in that: when carrying out described vacuum electroosmosis precipitation, carry out piling prepressing, described piling prepressing method is, the cofferdam is set around processing region, the water of extracting out during with vacuum electroosmosis precipitation injects in the cofferdam, carries out piling prepressing.
6. method for reinforcing composite vacuum prepressing soft soil foundation according to claim 5 is characterized in that: the method to set up in described cofferdam is that the vacuum preloading diaphragm seal tiles to the ground of the loading zone outside, covers clay on it, builds up the cofferdam.
7. method for reinforcing composite vacuum prepressing soft soil foundation according to claim 5 is characterized in that: the method to set up in described cofferdam is that the excavation groove is embedded in diaphragm seal in the groove outside loading zone, covers clay on it, builds up the cofferdam.
8. method for reinforcing composite vacuum prepressing soft soil foundation according to claim 1, it is characterized in that: described face of land post-processed is meant the reparation diaphragm seal, the described reinforcing again is meant, stopped vacuum pump 1 to 2 day, the soil aperture system is recovered, carried out vacuum preloading and electric osmose once more, extremely moisture the reducing in processed zone stopped to vacuumize and electric osmose in 30%～35% o'clock, remove the vacuum electroosmosis device, ground grading.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102182174A (en) * | 2011-04-02 | 2011-09-14 | 河海大学 | Construction method for treating soft soil foundation by combining chemical solution injection electro-osmosis method and gravel pile |
| CN102493428A (en) * | 2011-12-09 | 2012-06-13 | 中国建筑西南勘察设计研究院有限公司 | Vacuum preloading structure for reinforcing soft foundation |
| CN102535432A (en) * | 2011-12-26 | 2012-07-04 | 河海大学 | Vacuumizing-electroosmosis-stacking combined soft-foundation consolidating system and method |
| CN102995620A (en) * | 2012-12-27 | 2013-03-27 | 大连理工大学 | Vacuum/electroosmosis/magnetic field/stack joint preloading consolidation method of soft foundation |
| CN103321207A (en) * | 2013-06-05 | 2013-09-25 | 河海大学 | Solar drive electro-osmotic device and method for reinforcing soft soil foundations |
| CN104131549A (en) * | 2014-06-16 | 2014-11-05 | 武汉河海泽地电渗科技有限公司 | Electro-osmotic drainage consolidation method for electrode pipes |
| CN104328776A (en) * | 2014-09-23 | 2015-02-04 | 同济大学 | Method for predicting influence of dynamic compaction on soil body and surrounding environment |
| CN106226173A (en) * | 2016-10-12 | 2016-12-14 | 山西省交通科学研究院 | A kind of vacuum preloading soil under action body detrusion measurement apparatus and measuring method |
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2007
- 2007-10-25 CN CNB2007101351325A patent/CN100526563C/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182174A (en) * | 2011-04-02 | 2011-09-14 | 河海大学 | Construction method for treating soft soil foundation by combining chemical solution injection electro-osmosis method and gravel pile |
| CN102182174B (en) * | 2011-04-02 | 2012-09-26 | 河海大学 | Construction method for treating soft soil foundation by combining chemical solution injection electro-osmosis method and gravel pile |
| CN102493428A (en) * | 2011-12-09 | 2012-06-13 | 中国建筑西南勘察设计研究院有限公司 | Vacuum preloading structure for reinforcing soft foundation |
| CN102535432A (en) * | 2011-12-26 | 2012-07-04 | 河海大学 | Vacuumizing-electroosmosis-stacking combined soft-foundation consolidating system and method |
| CN102535432B (en) * | 2011-12-26 | 2014-04-09 | 河海大学 | Vacuumizing-electroosmosis-stacking combined soft-foundation consolidating system and method |
| CN102995620A (en) * | 2012-12-27 | 2013-03-27 | 大连理工大学 | Vacuum/electroosmosis/magnetic field/stack joint preloading consolidation method of soft foundation |
| CN102995620B (en) * | 2012-12-27 | 2015-01-28 | 大连理工大学 | Vacuum/electroosmosis/magnetic field/stack joint preloading consolidation method of soft foundation |
| CN103321207A (en) * | 2013-06-05 | 2013-09-25 | 河海大学 | Solar drive electro-osmotic device and method for reinforcing soft soil foundations |
| CN104131549A (en) * | 2014-06-16 | 2014-11-05 | 武汉河海泽地电渗科技有限公司 | Electro-osmotic drainage consolidation method for electrode pipes |
| CN104328776A (en) * | 2014-09-23 | 2015-02-04 | 同济大学 | Method for predicting influence of dynamic compaction on soil body and surrounding environment |
| CN106226173A (en) * | 2016-10-12 | 2016-12-14 | 山西省交通科学研究院 | A kind of vacuum preloading soil under action body detrusion measurement apparatus and measuring method |
| CN106226173B (en) * | 2016-10-12 | 2020-09-15 | 山西省交通科学研究院 | Device and method for measuring shearing deformation of soil under vacuum preloading effect |
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