CN1369596A - Reverse method for treating soft foundation - Google Patents
Reverse method for treating soft foundation Download PDFInfo
- Publication number
- CN1369596A CN1369596A CN 02116224 CN02116224A CN1369596A CN 1369596 A CN1369596 A CN 1369596A CN 02116224 CN02116224 CN 02116224 CN 02116224 A CN02116224 A CN 02116224A CN 1369596 A CN1369596 A CN 1369596A
- Authority
- CN
- China
- Prior art keywords
- ground
- soft ground
- construction
- ground treatment
- slip casting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
A technology for treating soft ground by reverse construction order features that the foundation and part of main structure of a building is first built up and when the load on ground reaches its original bearing power the ground is grouted by pressure pouring while the structure of building is constructed. Its advantages are short constructino period and simple operation.
Description
One, technical field
The invention belongs to building construction technology, relate to a kind of contrary method of doing of soft ground treatment.
Two, background technology
The loftiest towers are built up from the ground, and any building all will be built in above the ground, and ground plays a part very important in whole building structure as the cradle of building.No matter be industrial construction or civilian construction, its whole loads are all passed to ground by the basis, and the quality of the size of bearing capacity of foundation soil and supporting capacity, then are decided by the kind of foundation soil and physics, mechanical property.The generation of building accident, many relevant with the ground problem, particularly assorted fill out at some ashes, the ditch hole in length and breadth, the regional construction of geological conditions more complicated, often because of reconnoitring, design, construct inconsiderate or environment and mode of occupation change, and cause the generation of foundation engineering accident, and cause building to produce uneven subsidence, crack, inclination gently then appear, weaken and destroy globality, the durability of structure, cause a hidden trouble; Heavy then foundation instability causes building collapsing, the safety of harm people's lives and properties.
In the common engineering, to could build the house in the above through after the artificial consolidation process at soft foundation (referring to the main ground that constitutes by mud, dredger fill or other high-compressibility soil layers).The conventional method of handling general soft foundation has machinery to press (rammer) reality, preloading to give pressure, cushion, piling etc.For complexity soft foundation soil layer, as saturated silt, moat ditch miscellaneous fill, soil layer is piled up in the river shoal, hillside geology, big thickness flyash miscellaneous fill, collapsible loess, decomposed rock, drift sand, shallow water position and be subjected to geological prospecting restriction can't investigate thoroughly whether deep layer has soft layer, the coffin pit, types such as cavity, if still carry out Foundation Treatment earlier by conventional method, often because of the geological conditions complexity, not only construction costs is too high, it is very long to take the duration, and hidden danger of quality is difficult to thorough elimination, the complexity soft layer that some is special, for the engineering design and construction personnel, just as the doctor has met difficult and complicated cases, sometimes how much no matter spends also can't solve at all, make the engineering can not be at these regional constructions.
Three, summary of the invention
The objective of the invention is to problem at existence in the above-mentioned soft ground treatment construction, a kind of job practices that adopts the contrary sequence method soft ground treatment is provided, make the complexity soft foundation zone engineering construction that at all can't handle become possibility, ground is handled and is not taken the duration simultaneously, and it and agent structure are constructed simultaneously.In addition, also has convenient and flexible operation, advantage that construction takes up room is little, ambient influnence is few, the duration is short, quality is good etc.
The objective of the invention is to be achieved through the following technical solutions.
A kind of job practices that adopts the contrary sequence method soft ground treatment, just in time opposite with the common engineering sequence of construction, do not carry out earlier ground and handle, but under the situation of understanding former ground soil layer, carry out the construction of basis, part agent structure layer earlier, when the ground upper load reaches original bearing capacity of foundation soil (F
K) time, just come into effect ground processing---slip casing by pressure, and construct synchronously with superstructure.The reverse construction technology of this soft ground treatment is by slip casting power and the power of superstructure load action on ground that ground applies to be balanced each other, and reaches the requirement that building does not produce sedimentation.Promptly should satisfy F
K+ F
Z=F
SEquilibrium conditions, F wherein
ZBe the bearing capacity that increases after the slip casting, F
SBe superstructure and basic, F from heavy load
KBe original bearing capacity of foundation soil value.
Slurry injection technique is as far back as the eighties, and China just is widely used in existing building ground stabilization, dam foundation leak stopping, limit, hole and fixes the sand engineerings such as leak stopping.For the complexity soft foundation of new construction, adopting contrary sequence method slip casting to handle is principal character of the present invention.The slurry injection technique of contrary sequence method soft ground treatment, be comprise machine drilling, intubate, seal, a kind of diagonal angle of processing step such as slip casting, equivalent, slip casting method repeatedly.So-called diagonal angle is meant many rows orifice of establishing more than two rows in reinforcing scope, the method that grouting operation adopts interval skip, diagonal angle to pour into is simultaneously in proper order promptly taked vertical tracking, horizontal diagonal angle, and the method that pour into simultaneously in two holes, two hole pitch-rows generally are not less than 3 meters.So-called equivalent is meant that each injection rate equates, generally is controlled at the 0.25-1 ton.What is called repeatedly is meant by the single hole injection rate of design and injects several times, generally adopted blanking time 4-7 hour.
The grouting process step of described employing contrary sequence method soft ground treatment: (1) machine drilling, should determine bore position one by one according to aperture, hole depth, eyelet inclination angle, the diffusion radius of designing requirement, adopt common mechanical boring.Decide on foundation depth and width at hole depth and eyelet inclination angle, and generally speaking, actual grade is as the criterion for stretching into hardpan 0.5M, line position, bottom position Ying Ju base center, hole.(2) intubate adopts 3/4 ' pvc pipe or steel pipe, and length is lacked 500mm (should reserve above coupling part, ground) than drilling depth.(3) seal, adopt the sealing of " three water slurrys " and pipe box, seal the degree of depth and be generally 2-4M, make firm by ramming closely knit.(4) slip casting divides single tube single-fluid process and two kinds of technologies of two-tube two-fluid process, and single tube single fluid grouting method promptly adopts cement, water, water glass to cooperate, stir and form what is called " three water slurrys " in 1: 0.65: 0.03 ratio, injects basic soil by the high-pressure injection pump single tube.Two-tube two fluid grouting method be about to cement paste and water glass in 1: 0.3 ratio respectively with two pipes, two pumps or the pump that twin-tub independently separates, inject basic soil simultaneously.Grouting sequence is taked in the outer earlier back, promptly peripheral in advance sealing, and the rule of post processing inside.
Advantage of the present invention and effect:
1, solved a difficult problem of on the complexity soft foundation, carrying out engineering construction.
Building operations on soft foundation with traditional method for processing foundation cost height, long in time limit, meets the complexity soft foundation and can't construct sometimes at all.Because the present invention is in building engineering construction, reach when the ground upper load under the state of original bearing capacity of foundation soil, cut the slip casting adverse construction method that ground is handled in good time, like this, upper load is the power that ground is applied by contrary sequence method slip casting to the requirement of foundation bearing, acting on power on the ground with upper load, is not produce under the equilibrium conditions of sedimentation with building to finish.Therefore, make that than conventional method the general soft foundation of processing is easier, processing complexity soft foundation, particularly those difficult and complicated cases and the soft foundation that at all can't handle become possibility.
2, ground is handled and is not taken the duration.
Common engineering is built, and ground is handled all need take certain duration, handles for the complexity ground, because the complexity of processes such as design, construction, detection more makes the duration long.Ground of the present invention is handled and is neither carried out before civil engineering, also not in engineering completion back construction, but carries out synchronously with major project, and the no duration takies and can talk.Therefore, the strengthening construction of ground can not influence the progress of engineering itself, to urgent, the conditional engineering of those time requirements, has robbed the time especially, and is practical more.
3, improve the bearing capacity of ground, guaranteed engineering stability, reliable.
Because the present invention has adopted the novel slurry filling technology---diagonal angle equivalent is slip casting method repeatedly, " three water slurrys " is after basic soil is injected in extruding, seepage flow, splitting by force, the native inside of base has produced corresponding physical strain and chemical reaction, extrude moisture content, the air of saturated soil layer to greatest extent, compacted soil skeleton, the artificial degree of consolidation of accelerating base soil improves resistance to compression, shearing resistance, anti-vibration, the anti-liquefying power of base soil, thereby has improved the bearing capacity and the modulus of compressibility of ground; Rationally arrange the perfusion order, the control speed of application is not too fast, prevents that wetted areas from joining together, and avoids taking place additional settlement, has guaranteed workmanship.Once to injected hole analysis check, observe excavation slurry hole, formed bulb shape concrete stake, be densely covered with the shark's fin shape plate that slurries are cast around it, crisscross between plate and the plate, embed firmly in the basic soil, can see that slurries go into by the seepage flow splitting of basic soil pores, the place of arrival is an one with the gluing of base soil all, forms hard bearing stratum.As seen, the ground soil property is compacted, consolidation effect is obvious, and reinforcement effect is reliable.Therefore guaranteed the permanent stable of building.
4, easy to operate, materials are simple.
The same basically prior art of grouting process of the present invention, operating procedure is fairly simple.The visual engineering actual conditions of the proportioning of " three pulp-waters " and other key points for operation are grasped in good time, are adjusted, and construction is not limited by or not the place, all can construct in narrow, short and small space, have easy to operate, advantage flexibly.In addition, it is main material that injecting paste material is selected cheap cement for use, adds a spot of water glass, small scale, small investment.Noise and vibration is little in the operating process, and is few to ambient influnence.
Four, description of drawings
Fig. 1 is that injected hole of the present invention position is arranged and the sequence of construction schematic diagram, position, the hole order of 1,2,3,4 expression diagonal angles, perfusion simultaneously among the figure.
Five, the specific embodiment
A kind of job practices that adopts the contrary sequence method soft ground treatment, its construction technology step is as follows:
1, preparation.Before the engineering construction,, grasp the bearing capacity of foundation soil value (F in the geological prospecting report at site condition, type, grade, the feature collection geologic information that it is located in
K), in conjunction with of the requirement of engineering superstructure load, determine the degree of depth and scope that soft layer is handled to ground.
2, major project construction.Under the situation of understanding former ground soil layer, carry out the construction of basis, part agent structure earlier, the number of plies of construction is with original bearing capacity of foundation soil (F
K) be foundation, general subject's structure proceeds to two layers or three layers and binds, the incision Foundation Treatment.It is heavy specifically can to bear some floors, be by every square metre of additional deadweight (KN/M
2) adjust former F
KValue satisfies: KN/M
2≤ F
K
3, insert the contrary sequence method soft ground treatment.When the ground upper load reaches original bearing capacity of foundation soil (F
K), carry out the adverse construction method of slip casting Ground Treatment immediately, and carry out synchronously with superstructure.Promptly should satisfy: F
K+ F
Z=F
SEquilibrium conditions, F wherein
ZBe the bearing capacity that increases after the slip casting, F
SBe superstructure and basic, F from heavy load
KBe original bearing capacity of foundation soil value.
Adopt the grouting process step of contrary sequence method soft ground treatment to comprise: (1) machine drilling, the machinery of employing are TXU-75 hydraulic feed drill, air compressor machine, hammer drill; Determine bore position, hole depth, eyelet inclination angle, diffusion radius one by one according to designing requirement; The position, hole is subjected to landform when restriction, can be according to being the center to ground point at the bottom of the hole, carry out conversion to 360 principles of spending the camber line optional positions of Kong Weiwei radius; The anhydrous brill of the general employing of boring; Decide on foundation depth and width at hole depth and eyelet inclination angle, generally stretches into 0.5 meter of hardpan, line position, Ying Ju base center, bottom, hole, and deviation should be less than 300 millimeters.(2) intubate should check before the intubate whether pore is unimpeded, and intubate adopts 3/4 ' pvc pipe or steel pipe, and catheter depth will guarantee than short 500 millimeters of drilling depth.(3) seal, it is key one ring of operating process, and hole envelope imprecision can not slip casting, and joint filling material has jute cloth bag, cement paste, concrete, rubber ball etc., seals the degree of depth and is generally 2-4 rice, makes firm by ramming closely knit.(4) slip casting divides two kinds of single tube single-fluid process and two-tube two-fluid processes, and injection slurry adds the water glass stirring again by cement paste and forms, and is commonly called as " three water slurrys ".Single tube single fluid grouting method, adopt cement: water: the cooperation ratio of water glass=1: 0.65: 0.03, stir, by high-pressure injection pump, basic soil is injected in plasma discharge while stirring.Two-tube two fluid grouting method is that water glass and cement are divided into two kinds of slurries, and in cement paste: the cooperation ratio of water glass=1: 0.3, after stirring, the pump that independently separates with two pumps or twin-tub injects basic soil simultaneously.Single tube single-fluid process cost is low, and being widely used in does not have in the building of specific (special) requirements ground, and two-tube two-fluid process time of setting is fast, cost is high slightly, generally is used for ground is had the building of specific (special) requirements.
In order to ensure workmanship, aspect grouting operation, adopted repeatedly slip casting method of a kind of diagonal angle equivalent.(1) diagonal angle: during actual engineering reinforcement, because key dimension is bigger than loading test bearing plate area, especially strip foundation, raft foundation, when each hole slip casting interval skip is carried out, it is much smaller during shared ratio loading test in the foundation bed scope to soak the district, foundation soil reduces because of soaking the intensity that causes in subrange, can bear a part of load and adjusts by the adjacent Quito, ground of not soaked.As shown in Figure 1, in most of engineering constructions, need to arrange two rows or the above many rounds slip casting of three rows, adopt diagonal angle slip casting, promptly a direction is followed the tracks of a direction diagonal angle in length and breadth, perfusion simultaneously, first as shown in FIG. orifice position 1, the orifice position 2 again ... no matter any like this odd number square all is diagonal angle, interval skip perfusion.Guan Zhu two pitch-rows generally are not less than 3 meters from far away more good more simultaneously.(2) equivalent: each injection rate, so that not taking place, additional sinking exceeds, generally be controlled at the 0.25-1 ton.(3) repeatedly: by the single orifice injection rate, inject several times and reach requirement,,, be generally 4-7 hour as the blanking time of front and back slip casting with the solid-state time in stage of slurries.
Workmanship detects: adopt based on level gauge, transit survey is that the sedimentation that the means of assisting detect building changes, and the coordinative construction overall process is with the Control Engineering quality.In the construction, answer emphasis to note slip casting point and near side (ns) situation, additional sinking position faster should be observed without a break, and according to survey data, the decision of in time make adjustment injected hole position or time-out slip casting guarantees workmanship.Adopt this building displacement measurement method, the engineering that adopts the present invention's construction is carried out observing and controlling, all reached design standard.
Case history is as follows:
1, Lucheng City silver overseas Chinese merchant field engineering
Ground base type: shallow water position, saturated silty clay soil layer, F
KValue is 70～80Kpa
Structure types: four story frame structures, local five layers, yi word pattern.
Method for processing foundation: adopt the water squeezing of graded broken stone layer, carry out structure construction then, adopt contrary sequence method to carry out ground during to two layers and handle.
Testing result: sedimentation value maximum point position is 6mm, differential settlement between point＜3mm/m normal value, and outward appearance detects free from flaw, and non-displacement takes place.
Result of use: this building used more than 6 years, any hidden danger of quality do not occur, used normal.
2, Changzhi City property firm 8#9# building engineering
The ground base type: the dark thick 9～10m bearing capacity of miscellaneous fill only is 70Kpa.
Structure types: six-storey brick and concrete structure, yi word pattern.
Method for processing foundation: when major project proceeds to two layers, adopt contrary sequence method to carry out ground and handle.
Testing result: sedimentation value maximum point position is 4mm, differential settlement between point＜3mm/m normal value, and outward appearance detects free from flaw, and non-displacement takes place.
Result of use: this building used more than 6 years, any hidden danger of quality do not occur, used normal.
3, suburbs, Jincheng public security bureau office building engineering
The ground base type: decomposed rock folder soot layer, bearing capacity only is 80Kpa.
Structure types: five layers of brick mix structure, yi word pattern.
Method for processing foundation: this ground depths can't be handled, and when major project proceeds to three layers, adopts contrary sequence method to implement ground and handles.
Testing result: sedimentation value maximum point position is 4mm, differential settlement between point＜3mm/m normal value, and outward appearance detects free from flaw, and non-displacement takes place.
Result of use: this building used more than 6 years, any hidden danger of quality do not occur, used normal.
4, Changzhi City garden road family dependents' building is set up 2 element projects
The ground base type: the miscellaneous fill bearing capacity only is 90Kpa.
Structure types: five layers of brick mix structure, yi word pattern.
Method for processing foundation: when its major project proceeded to two layers, the synchronization implementation reverse construction carried out ground and handles.
Testing result: sedimentation value maximum point position is 3mm, differential settlement between point＜3mm/m normal value, and outward appearance detects free from flaw, and non-displacement takes place.
Result of use: this building used more than 5 years, any hidden danger of quality do not occur, used normal.
5, the 3# of Changzhi City Gas Company residence floor engineering
The ground base type: this place is filled out for empty shop is assorted protects city ditch side slope, water content height, F
KValue only is 60Kpa.
Structure types: six-storey brick and concrete structure, yi word pattern.
Method for processing foundation: when its agent structure proceeded to one deck and binds, the synchronization implementation contrary sequence method carries out ground to be handled.
Testing result: sedimentation value maximum point position is 2mm, differential settlement between point＜3mm/m normal value, and outward appearance detects free from flaw, and non-displacement takes place.
Result of use: this building used more than 5 years, any hidden danger of quality do not occur, used normal.
6, Jincheng City Jinqiao Group family dependents' building engineering
The ground base type: the complexity ground, 4～5m has the inclination basement rock under the substrate, and crack and drift sand occur.
Structure types: six-storey brick and concrete structure, yi word pattern.
Method for processing foundation: when its major project proceeded to three layers, the synchronization implementation reverse construction carries out ground to be handled.
Testing result: sedimentation value maximum point position is 6mm, differential settlement between point＜3mm/m normal value, and outward appearance detects free from flaw, and non-displacement takes place.
Result of use: this building used more than 2 years, any hidden danger of quality do not occur, used normal.
7, Yangcheng County profit city village school is learned the teaching building engineering
Ground base type: typically inhomogeneous, landslide type ground.
Structure types: type is built four story frame structures.
Method for processing foundation: when frame construction proceeded to three layers, the synchronization implementation reverse construction carries out ground to be handled.
Testing result: sedimentation value maximum point position is 6mm, differential settlement between point＜3mm/m normal value, and outward appearance detects free from flaw, and non-displacement takes place.
Result of use: this building used more than 2 years, any hidden danger of quality do not occur, used normal.
8, Yangcheng County profit city village 1#～6# commercial and residential building engineering
Ground base type: alluvial flat, deep flow sandbox ground.
Structure types: the six-storey brick and concrete structure, wherein one deck is a frame construction.
Method for processing foundation: when agent structure proceeds to two layers～three layers, in good time carry out the contrary sequence method Foundation Treatment synchronously.
Testing result: sedimentation value maximum point position is 4mm, differential settlement between point＜3mm/m normal value, and outward appearance detects free from flaw, and non-displacement takes place.
Result of use: so far, any hidden danger of quality do not occur after the completion, use normal.
Claims (6)
1, a kind of job practices that adopts the contrary sequence method soft ground treatment is characterized in that described job practices is: carry out the construction of construction work basis and part agent structure earlier, when the ground upper load reaches original bearing capacity of foundation soil (F
K) time, begin to insert the adverse construction method of slip casting soft ground treatment, and with the superstructure method of construction synchronously.
2, according to the job practices of claims 1 described employing contrary sequence method soft ground treatment, it is characterized in that the adverse construction method of described slip casting soft ground treatment, should satisfy: F
K+ F
Z=F
SEquilibrium conditions, F wherein
ZBe the bearing capacity that increases after the slip casting, F
SBe superstructure and basic, F from heavy load
KBe original bearing capacity of foundation soil value.
3, according to the job practices of claims 1 described employing contrary sequence method soft ground treatment, the adverse construction method that it is characterized in that described slip casting soft ground treatment, be to comprise: machine drilling, intubate, seal, a kind of diagonal angle of grouting process step, equivalent, slip casting method repeatedly, that is: take many rounds, tracking of direction in length and breadth, a diagonal angle pours into simultaneously, and each injection rate equates, the method for interval injection several times.
4, according to the job practices of claims 3 described employing contrary sequence method soft ground treatment, it is characterized in that described diagonal angle pours into simultaneously, its two pitch-row is from being not less than 3 meters; Described each injection rate is controlled at the 0.25-1 ton; Be 4-7 hour described blanking time.
5, according to the job practices of claims 3 described employing contrary sequence method soft ground treatment, it is characterized in that described grouting process is the single fluid grouting method, that is: adopt cement, water, water glass to cooperate to stir and form " three water slurrys ", inject basic soil by the high-pressure injection pump single tube in 1: 0.65: 0.03 ratio.
6, according to the job practices of claims 3 described employing contrary sequence method soft ground treatment, it is characterized in that described grouting process is two-tube two fluid grouting method, after soon cement paste and water glass stirred in ratio cooperation in 1: 0.3, the grouting pump that separates with two pipes, two platform independent injected basic soil with above-mentioned slurries simultaneously respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021162247A CN1193142C (en) | 2002-03-22 | 2002-03-22 | Reverse method for treating soft foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021162247A CN1193142C (en) | 2002-03-22 | 2002-03-22 | Reverse method for treating soft foundation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1369596A true CN1369596A (en) | 2002-09-18 |
| CN1193142C CN1193142C (en) | 2005-03-16 |
Family
ID=4744040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021162247A Expired - Fee Related CN1193142C (en) | 2002-03-22 | 2002-03-22 | Reverse method for treating soft foundation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1193142C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101260667B (en) * | 2008-04-25 | 2010-09-22 | 南京工业大学 | Given force splitting mud jacking enhancement type composite foundation construction method |
| CN102635368A (en) * | 2011-05-09 | 2012-08-15 | 上海申通地铁集团有限公司 | Dual-liquid micro-disturbance grouting strengthening method for soft-soil subway tunnel |
| CN105829610A (en) * | 2012-12-13 | 2016-08-03 | 瑞杰德格兰德私人有限公司 | Treating particulate and connecting slab portions |
| CN110117954A (en) * | 2019-03-27 | 2019-08-13 | 温州和鸿建设工程有限公司 | A kind of soft soil foundation compounding method |
-
2002
- 2002-03-22 CN CNB021162247A patent/CN1193142C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101260667B (en) * | 2008-04-25 | 2010-09-22 | 南京工业大学 | Given force splitting mud jacking enhancement type composite foundation construction method |
| CN102635368A (en) * | 2011-05-09 | 2012-08-15 | 上海申通地铁集团有限公司 | Dual-liquid micro-disturbance grouting strengthening method for soft-soil subway tunnel |
| CN102635368B (en) * | 2011-05-09 | 2014-12-03 | 上海申通地铁集团有限公司 | Dual-liquid micro-disturbance grouting strengthening method for soft-soil subway tunnel |
| CN105829610A (en) * | 2012-12-13 | 2016-08-03 | 瑞杰德格兰德私人有限公司 | Treating particulate and connecting slab portions |
| US9822497B2 (en) | 2012-12-13 | 2017-11-21 | Rigid Ground Pty Ltd | Treating particulate and connecting slab portions |
| CN110117954A (en) * | 2019-03-27 | 2019-08-13 | 温州和鸿建设工程有限公司 | A kind of soft soil foundation compounding method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1193142C (en) | 2005-03-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1193141C (en) | Combined grouting construction process of reinforcing foundation | |
| CN111827274B (en) | High-strength grouting method for marine wind power weakly-weathered bedrock single-pile socketed foundation | |
| CN102011399B (en) | PHC pile-based multiple high jet pedestal pile construction method | |
| CN103233454A (en) | Processing method of soaking, vacuum preloading and slurry injecting for sand piles of collapsible loess foundation | |
| CN106759297A (en) | A kind of construction method of support pile and three pipe high-pressure rotary jet grouting pile deep basal pits | |
| JP5243669B1 (en) | Method of tilting structure and improving ground | |
| CN104746505A (en) | Method for treating miscellaneous fill foundation combing dynamic consolidation and compaction grouting | |
| CN106812149A (en) | A kind of construction method of pile foundation | |
| CN105113478A (en) | Dynamic compaction treatment method of deep foundation displacement | |
| CN109252433A (en) | Method soft soil foundation intensive treatment construction and reinforce soft soil foundation foundation pit | |
| Essler et al. | Jet grouting | |
| CN207659986U (en) | A kind of building or structures foundation stabilization underpin pier | |
| CN1193142C (en) | Reverse method for treating soft foundation | |
| CN105672329B (en) | The large size prefabricated building enclosure of deep basal pit and construction method | |
| CN105714832B (en) | A kind of large size prefabricated building enclosure of deep basal pit and construction method | |
| Ischy et al. | AN INTRODUCTION TO ALLUVIAL GROUTING. | |
| CN207109796U (en) | Deep ＆ thick silt matter riverbed piping lane crosses the river double steel plate pile cofferdam structure | |
| CN103437712B (en) | A kind ofly be applicable to the three axle mixer drill bits penetrating gravel layer soil property | |
| CN214832752U (en) | Soil squeezing prevention structure for construction of large-area sludge soft soil foundation pipe pile | |
| CN213897154U (en) | Soft soil foundation pit bottom curing structure | |
| CN212336070U (en) | Karst foundation variable-rigidity primary-secondary pile | |
| CN109113054A (en) | A kind of reclaimation area complex geological condition cast-in-situ bored pile multimachine combined construction method | |
| CN1066511C (en) | After-grouting pile composite foundation and construction method thereof | |
| CN114109394A (en) | Method for determining pile length of tunnel shallow-buried weak surrounding rock high-pressure jet grouting pile method ground surface reinforcement | |
| CN111379254A (en) | Basic treatment method for building sediment treatment plant in unfavorable geology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |