CN103132511A - Pile-forming method and pile-forming device for static pressure immersed tube expanded-base cast-in-place pile - Google Patents
Pile-forming method and pile-forming device for static pressure immersed tube expanded-base cast-in-place pile Download PDFInfo
- Publication number
- CN103132511A CN103132511A CN2011103860059A CN201110386005A CN103132511A CN 103132511 A CN103132511 A CN 103132511A CN 2011103860059 A CN2011103860059 A CN 2011103860059A CN 201110386005 A CN201110386005 A CN 201110386005A CN 103132511 A CN103132511 A CN 103132511A
- Authority
- CN
- China
- Prior art keywords
- pile
- static pressure
- steel pipe
- tube
- immersed tube
- 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.)
- Pending
Links
Images
Abstract
The invention discloses a pile-forming method and a pile-forming device for a static pressure immersed tube expanded-base cast-in-place pile. The method comprises the steps that a thick-wall steel tube with a hopper in the upper portion and a valve pile point in the lower portion is pressed to be in a designed elevation through a static pile press extractor with dual clamping mechanisms, hard padding is placed inside the steel tube in a thrown mode, a large head is formed at the bottom of the tube in a pounded mode through a pounder, then a reinforcement cage is placed in a hung mode, concrete is poured into the steel tube, the steel tube is up-pulled, and the pile is formed. Based on an original static pressure tube pile machine, the pile-forming device mainly adds a single clamping mechanism with an up-pull oil cylinder or a dual-clamping mechanism with the up-pull oil cylinder and the press extractor with a derrick, a winch and a tube twister. The method solves the problem that pile-forming in the prior art is low in speed and bearing capacity, and uneconomical.
Description
Technical field: the present invention designs a kind of piling method for pile foundation engineering and facility.
Background technology: along with continuing to bring out of advanced construction machinery, the measure of the construction that is is science, first reasonable more and more, the economic effect that obtains is better significantly, the hugging pressure type static pile press just first goes a step further than jacked static pile press, its not only piling degree of depth is improved, and reduced quick-fried stake rate.The patented technology of the patent No. 200710072654.5 is by static pile press, the steel pipe of one root bottom part band flapper pile tip to be depressed into design elevation.Or design load, install reinforcing cage in the steel pipe is pressed large flow concrete filledly, then steel pipe is extracted rear pile, and this technique has overcome pile pipe and has met sand bed and is obstructed, the problem of another quick-fried.Compaction pile is a kind ofly directly to ram to foundation soil by the steel wire rope of windlass hanging with weight, and the sleeve pipe follow-up is then thrown in building waste in sleeve pipe, ram through repeated multiple times, the shape of taking the lead occurs at the bottom of making, puts into reinforcing cage, and after the perfusion concrete, the sleeve pipe pile is extracted in vibrations.The advantage of this technique is: economy, bearing capacity of single pile are relatively high, shortcoming is: mechanical performance is limited, can only do paxilla, stub, the single pile bearing force level is low, simultaneously soil disturbance be can not meet greatly the requirement of highrise building or large-scale industrial civil building, speed of application is slow, and group's machine construction generation noise is mixed and disorderly often, disturbs residents, wilderness again, construct in the multistory building place.
Summary of the invention: perfusion piling method of the static pressure, immersed tube and enlarged end and device thereof just can overcome the problems referred to above, and make construction costs relatively low.
Method of the present invention realizes by following steps:
1, adopt to press the machine that pulls out that the bottom is pressed into design elevation or design load with the thick walled steel tube of taper flapper pile tip top band hopper;
2, steel pipe is pulled up a little more than the flapper pile tip height, then throws in filler in pipe,
3, with hoist engine, hammer ram is hung in steel pipe, rams and make it form major part in pipe bottom managing interior filler,
4, hammer ram is proposed toward the interior install reinforcing cage of pipe to cage top mark eminence;
5, in the pipe pressure concrete injecting to a little more than stake top mark eminence or fill with the hole;
6, steel pipe is extracted ground after, remove the suspension ring that hang reinforcing cage, fix the high and telephone-moving of cage top mark, next position of constructing.
Operating principle of the present invention is: the bottom is with the steel pipe of flapper pile tip, pull out at high-power static pressure under the effect of machine, than strong many of the penetration power of prefabricated shoe and pile tube, facts have proved, penetrating at present layer of sand is not problem, and 3 meters thick gravel layers in left and right can penetrate, therefore, it rams the hole than vibration with pipe and expands fast many of the speed of compaction pile construction at the end, and the pressure that especially adopts double fastener to hold mechanism arrangement is pulled out machine, and the speed of its construction is 1.5～2 times of single clamping device device.Double fastener is held mechanism namely: one group of clamping device press down or on when pulling out, another group clamping device unclamps the slips upstream or downstream, when the position locking slips that moves to upstream or downstream begin to press down or on when pulling out, and first one group of clamping device completed once press down or on pull out, so just unclamp the slips upstream or downstream, go round and begin again, continuously steel pipe is pressed down or on pull out, after being suppressed design elevation, steel pipe just steel pipe is pulled up the height (be intended to make the pile top flap valve to open, can not click with hammer ram when opening if find) greater than pile top.Throw in filler in pipe above pipe liftout bucket; Filler can be building waste, rubble or dry and hard concrete, also can throw in which kind of filler by designing requirement or Party A's requirement, afterwards hammer ram is hung in steel pipe that 2～4m highly rams filler at the bottom of the hole, through repeatedly ramming, make pipe end formation enlarged footing, expand the large I of head according to designing requirement, therefore, what and hammer number of filler determines the size of expansion, and the size of enlarged footing is determining the size of stake end power.Therefore, the quantity of filler is no less than 1.5 times of stake warps.Can do secondary filler or three fillers according to geological conditions and designing requirement continues and rams, tamped thing is to the diffusion of stake week, flapper pile tip also can be thereupon outwards open, because it is flexibly connected for axle, generally can be not destroyed easily, during ramming, the degree of depth at the bottom of the hole according to filler and hammer ram, but rough calculation goes out enlarged footing shape and volume, can according to hammering secondary or three grades of pile penetrations, can determine that end is stressed with reference to estimation at last.Propose after hammer ram in the pipe install reinforcing cage and absolute altitude place, press simultaneously pile after large flow concrete filled tube drawing.
Because the concrete piles in this technique formation of pile is that self-compaction fills and vibrates, therefore the pellet diameter of concrete is 0.5cm～3cm, slump is the mass concrete between 18～25cm, and for fear of the cage phenomenon occurring scraping, the concrete cover of reinforcing cage generally will be at 7.5～10cm.
The static pressure that pile making device of the present invention is held mechanism except single clamping or double fastener pulls out machine, also has the top band hopper that connects with thread connection or bearing pin by the assembly pulley on pole Hubei Province head on machine and hoist engine hanging in clamping device, the bottom is with the thick walled steel tube (Fig. 2) of flapper pile tip, and rams out filler and expand the sash weight (Fig. 5) of using at the end and form.
The beneficial effect of piling method of the present invention is:
1, this method is widely used, and easy construction because steel pipe bottom is strong with its penetration power of pile top of flap valve, not only is used for the foundation soil under general geological conditions, also is applicable to the foundation soils such as sandy soil circle gravel, gravel simultaneously.
What 2, this technique pressed down is a thick walled steel tube, does not exist to be pressed down as cement pipe pile easily to produce booster and phenomenon of rupture in process.
3, this method is to pour at the construction field (site) pile after concrete, after concrete and hole wall foundation soil are combined closely, increases collateral resistance, and the bottom enlarged footing, increased the end load simultaneously; And meet rich groundwater, when water level is high, do not have the On The Floating of image tube stake.
4, with this method construction, its construction costs is relatively lower, unlike pile tube, goes out to be transported to on-the-spot its expense larger from produce in factory again; And broken pile appears in construction, quick-fried stake phenomenon also will be carried out piling.
5, because this technique is to expand pile behind the end, make a major part at the bottom of stake, improved the end load, thereby the stake quantity of an engineering is reduced, also can relatively shorten stake long, therefore can the reduction of erection time, save the plenty of time to subsequent handling, accelerated the speed of integral construction.
6, relatively to have shortened stake behind the end long owing to expanding, difficulty of construction and fussy degree can have been reduced widely, especially construct in than weak foundation soil, as coastal overbank area, the alluvial plain, its groundwater table is high, soil property is soft, under this geological conditions, the stake of design is grown greatly, and the configuration of reinforcing cage is also greatly also long.Therefore, this technique is compared with the diving castinplace pile, and its advantage is more obvious.
7, this method is static pressure, immersed tube, does not produce noise, and both having made when expanding the end has hammering sound, be also underground and underground at tens meters, in addition the time of ramming of every is not long, hits number seldom, does not produce the problem of disturbing residents; Squeezed hole does not have mud excessive simultaneously, does not produce pollution, meets environmental protection, can accomplish to carry out production strictly in line with rules and regulations.
8, this method is in-site pouring concrete pile, and majority is pump-injecting concrete, and the slump of its concrete is large, and generally between 18～25cm, mobility is better, is the self-compaction without vibration, in general, safety, reliable, ensure the quality of products.During tube drawing, concrete is pressing pipe to walk all the time, and pipe-pulling speed broken pile can not occur lower than the infusion amount of concrete, and contracting is through phenomenon.
Description of drawings
Fig. 1 is piling method and the work progress schematic diagram of the inventive method static pressure, immersed tube bottom-enlarging filling pile, Fig. 2 is the overall schematic of pile making device of the present invention, Fig. 3 is that the bottom of a kind of pile making device of the present invention is with the combined steel pipe of flapper pile tip, top band hopper, Fig. 4 is the assembling schematic diagram of two groups of clamping devices of a kind of pile making device of the present invention, Fig. 5 is the hammer ram of a kind of pile making device of the present invention, and Fig. 6 is that the top band feed hopper bottom of a kind of pile making device of the present invention is worn the combined steel pipe of shoe.
The specific embodiment
The specific embodiment one is seen (Fig. 1), and the method for present embodiment realizes by following not step:
1, hold mechanism or double fastener and hold the static pressure of mechanism and pull out machine flapper pile tip (or shoe) top band hopper is with in the bottom with singly adding, by hoist engine by the assembly pulley on pole on machine and with the wire rope hanging in clamping device and the thick walled steel tube that is fixed on the pole slideway of flexible connection be pressed into design elevation or design load.
2, steel pipe is mentioned greater than the pile top height pile top flap valve is opened, and throw in filler in pipe.
3, with paying an elevator, the hammer ram hanging is entered in steel pipe, and ram bottom filling and make it become to enlarge head to reach designing requirement.
4, propose hammer ram, install reinforcing cage is also inserted cage top mark eminence in steel pipe with it.
5, start concrete pump pressure concrete injecting in the pipe, steel pipe can be filled tube drawing after concrete, but also limit pump-injecting concrete limit tube drawing, but the tube drawing height will all the time lower than more than concrete height 2m in pipe, occur with the avoid pile break phenomenon.The infusion amount of concrete is greater than the volume in the hole.The most handy concrete pump that gauge table is arranged during pump-injecting concrete in order to better grasp groundwater increment, operates also convenient.
6, steel pipe is extracted remove behind ground and carried the suspension ring that draw reinforcing cage, fix the cage top mark high, pile.
The specific embodiment two is seen (Fig. 2)
the pile making device of present embodiment is that the pressure of a static(al) immersed tube club-footed bored concrete pile is pulled out machine, to pull out oil cylinder on having increased on the basis of static pile press, (namely a cover clamping mechanism increases by 2, two cover clamping mechanisms increase by 4), increased simultaneously pole on machine (1), Hubei Province, pole top assembly pulley (2) main winch (3), bottom band flapper pile tip, thick walled steel tube (4) after the more piece combination of top band hopper, double fastener is held mechanism (5), pole slideway (6), the hopper side is welded with the elbow (7) of pump-injecting concrete, concrete flexible pipe (8), pay hoist engine (9), hammer ram (10) forms, during construction, the bottom is with the thick walled steel tube of flapper pile tip top band hopper, by the assembly pulley of pole on machine and with the specialized wire rope hanging on hoist engine in clamping device, random walk.Behind flapper pile tip align piles site after drawing in, in being buried in its hole, leveling (directly) is become vertical configuration by the compressed steel pipe with ground after pressing and pulling out machine, starts the clamping pressure and pulls out mechanism, presses down steel pipe.When it is depressed into design elevation, on pull out a pile top height after, throw in filler in pipe, then hammer ram is hung in steel pipe, filler is rammed, ram reach designing requirement after, the hammer ram install reinforcing cage is proposed in cage top mark eminence, pump-injecting concrete is in pipe, and the infusion amount is extracted ground with steel pipe after reaching requirement, remove the suspension ring of install reinforcing cage, fix reinforcing cage, telephone-moving next position of constructing.
The specific embodiment three is seen (Fig. 3)
The clamping device system that the pile of present embodiment expands end device is comprised of two groups of clamping devices, namely by pulling out oil cylinder on 4 and 4 down pressing oil cylinder form, forms continous way and presses tube drawing mechanism.One group of clamping device clamp press down or on when pulling out, slips of another group clamping device is in releasing orientation, upstream or downstream; When first group of clamping device clamp press down or on pull out complete a round trip after, with slips unclamp, when beginning upstream or downstream, another the group clamping device slips is locked, the beginning clamp press down or on pull out, go round and begin again, two groups of clamping devices continuously steel pipe is pressed down or on pull out.
The specific embodiment four is seen (Fig. 4)
The pile of present embodiment expands being pressed of end device and pulls out steel pipe and be one and combined by plurality of sections of steel pipes, top band hopper and in hopper one side with bend pipe that can the connecting concrete pump hose, the thick walled steel tube of bottom band flapper pile tip.through steel wire rope of windlass by pole Hubei Province assembly pulley hanging random walk in clamping device, during construction assembling hanging steel pipe, first the pipe nipple steel pipe of bottom with flapper pile tip top band screw thread drawn in its flap valve and penetrate ground, fixing with chain wrench or other instrument, making it non-rotatable, the steel tube suspending of one joint double headed roller thread is put into the torsion tube device and clamping device docks with band flapper pile tip steel pipe with loop wheel machine, starting the torsion tube device makes and unclamps the torsion tube device after both turning round the jail, starting clamping device locking slips clamps steel pipe and presses down (at this moment removed chain wrench etc. fixedly pile top instrument) and stop when following to the torsion tube device, loop wheel machine is put into the torsion tube device with the second section steel tube suspending and is docked with the first segment steel pipe, start the torsion tube device, twisting second section steel pipe is after the first segment steel pipe is turned round the jail, unclamping the torsion tube device clamps then that steel pipe presses down and it is pressed to below the torsion tube device and stop pressing down, at last, loop wheel machine is sling the 3rd joint steel pipe to put in the torsion tube device and is connected with second section.So, a joint joint steel pipe is connected and assembles; According to designing requirement preparation steel pipe length, after the final section steel pipe connects, its upper end can be flange with the hopper connected mode and is connected, and the change below hopper is welded equally a flange through flange and steel pipe upper end and is fixedly connected with bolt.During connection, if up and down flange screw dislocation decentraction, can twist flanged (FLGD) steel pipe (or left, or dextrorotation) is that available bolt is fixedly connected with after the screw hole symmetry.
The specific embodiment five is seen (Fig. 5)
The hammer ram of the bottom expanding pile forming device of present embodiment is to use steel-pipe welding, the inside is cone cast steel or cast iron, top is welded with bale handle and is connected with steel wire rope of windlass, hammer ram is two kinds, a kind of a kind of is the tack convex surface for the bottom is the tack plane, can select according to designing requirement and geological condition when seeing (Fig. 5) construction, generally, convex surface is hammered the major part of soil compaction formation outward into shape relatively hurry up.
During construction, steel pipe is mentioned steel pipe greater than a pile top height after being depressed into projected depth, throwing filler (rear tube drawing also can feed intake) then hangs into hammer ram and material distance when 2～4m, unclamping hoist engine clutch lock descends rapidly hammer ram to impact filler and makes its downward surrounding diffusion, through repeatedly ramming, its compactness is strengthened, improve bearing capacity.It is to ram when not arriving designing requirement at a filler that the secondary filler is rammed, after hammer ram is proposed steel pipe, then ram hammer ram is hung in pipe as filler for the first time, in-degree calculating is passed through in 2 grades or 3 grades of what and hammerings that the size of last enlarged footing and carrying calculation of force inquire for filler.
The specific embodiment six is seen (Fig. 6)
The shoe of the bottom expanding pile forming device of present embodiment is to use shoe according to the designing requirement of geological condition instead without flapper pile tip, exactly the bottom end face of the steel pipe that connects is penetrated shoe top, make both closely in conjunction with being connected, during construction, with the bottom taper pile top align piles site of shoe, telephone-moving the steel pipe bottom end face of hanging by shoe top round mouth vertical butt joint.The wire rope that loosens the hanging steel pipe is pressed in shoe with the weight of steel pipe, it is penetrated in soil, at this moment, pressure is pulled out the machine leveling, levelling is held steel pipe and presses down, and steel pipe heads on shoe and is depressed into design elevation, after feeding intake in the pipe, hammer ram is hung pipe and with in steel pipe and with after carrying 30～50cm on steel pipe, rams filler.The impact force of hammer ram makes filler and boots to bottom and surrounding diffusion, form a bottom enlarged footing, through repeatedly ramming filling tamped, finally by hammering pile penetration estimation bearing capacity of pile tip, after reaching designing requirement, propose the hammer ram install reinforcing cage to absolute altitude, pump is large flow concrete filled to higher than after the top mark height, extracts the steel pipe pile.When a filling tamped does not reach designing requirement, can do equally three additional fillers compactings of secondary.
Claims (8)
1. the piling method of a static pressure, immersed tube bottom-enlarging filling pile is characterized in that the piling method of static pressure, immersed tube bottom-enlarging filling pile realizes by following steps:
One, static pressure pull out machine with top band feed hopper bottom band flapper pile tip or be depressed into design elevation or design load with the steel pipe of shoe;
Two, pulling out steel pipe on makes it open then put upside down in the steel pipe filler of 1～2 times of stake warp of flap valve greater than the height of a pile top;
Three, hang hammer ram to the filler place in steel pipe;
Four, hang oneself hammer ram from filler 2～4m when height, make sash weight ram fast filler, make filler at the bottom of the stake and surrounding diffuses to form the major part body through repeatedly ramming;
Five, propose hammer ram, install reinforcing cage is in a little more than cage top mark eminence in the steel pipe;
Six, its slump of infusion is 18～25cm in the steel pipe, particle diameter be the mass concrete of 0.5～3cm in the hole a little more than stake top mark eminence;
Seven, pull out steel pipe on outside the hole, the shackle of the install reinforcing cage of dismantling fixes reinforcing cage in absolute altitude place pile;
2. the piling method of static pressure, immersed tube bottom-enlarging filling pile according to claim 1 is characterized in that install reinforcing cage can hang during the absolute altitude place at the bottom of the cage at concrete pouring;
3. the piling method of static pressure, immersed tube bottom-enlarging filling pile according to claim 1 is characterized in that available hammer ram is clicked when meeting that the foundry loam flapper pile tip is not opened or part is not opened and shoe when not breaking away from;
4. the pile making device according to the piling method of static pressure, immersed tube bottom-enlarging filling pile is characterized in that: it is on the basis of former static pile press that static pressure pulls out machine, but pulling out the oil cylinder continous way on having increased presses the double fastener of tube drawing to hold mechanism, thick walled steel tube, the torsion tube machine of pole, major-minor hoist engine, top band feed hopper bottom band flapper pile tip, hammer ram;
5. the pile making device of the piling method of static pressure, immersed tube bottom-enlarging filling pile according to claim 4, is characterized in that the connected mode of steel pipe can connect by the torsion tube machine with screw thread; Also available quick tieing connects by bearing pin;
6. also available shoe when the pile making device of the piling method of static pressure, immersed tube bottom-enlarging filling pile according to claim 4 is characterized in that meeting soft stratum;
7. the pile making device of the piling method of static pressure, immersed tube bottom-enlarging filling pile according to claim 4, it is characterized in that in order to reduce pole and to have alleviated the rod oil cylinder load, pole can adopt collapsible, through twice bar of priority, that is: after one group of master plays rod oil cylinder the pole that is superimposed is propped, the upper secondary oil cylinder will be applied pole again and prop;
8. to it is characterized in that expanding at the bottom of end hammer ram be two kinds, plane and convex surface to the pile making device of the piling method of static-pressure driven cast-in-place pile according to claim 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103860059A CN103132511A (en) | 2011-11-29 | 2011-11-29 | Pile-forming method and pile-forming device for static pressure immersed tube expanded-base cast-in-place pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103860059A CN103132511A (en) | 2011-11-29 | 2011-11-29 | Pile-forming method and pile-forming device for static pressure immersed tube expanded-base cast-in-place pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103132511A true CN103132511A (en) | 2013-06-05 |
Family
ID=48492917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103860059A Pending CN103132511A (en) | 2011-11-29 | 2011-11-29 | Pile-forming method and pile-forming device for static pressure immersed tube expanded-base cast-in-place pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103132511A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103276731A (en) * | 2013-06-25 | 2013-09-04 | 白波 | Movable pile tip of static pressure gravel sand pile |
| CN104895057A (en) * | 2015-05-15 | 2015-09-09 | 上海长凯岩土工程有限公司 | Big diameter steel pipe protective wall artificial digging-hole bottom expanding pile and building foundation reinforcement method |
| CN105369803A (en) * | 2015-12-02 | 2016-03-02 | 陕西聚源基础工程有限公司 | Device and method based on static pressure immersed tube hole forming heavy hammer tamping compaction pile |
| CN115324041A (en) * | 2021-05-11 | 2022-11-11 | 中部城市建设有限公司 | Construction process of root-reinforced pile |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0921234A1 (en) * | 1997-12-04 | 1999-06-09 | Ballast Nedam Funderingstechnieken B.V. | Method and device for arranging a pile in a ground |
| CN1429950A (en) * | 2001-12-29 | 2003-07-16 | 陈川爵 | Press-in bored concrete pile device and construction method |
| CN101761081A (en) * | 2010-01-05 | 2010-06-30 | 赵黎明 | Construction method and equipment of holding and pressing type static-pressure driven cast-in-place pile |
| CN101831908A (en) * | 2010-05-11 | 2010-09-15 | 武汉华威建筑桩工机械有限责任公司 | Large-diameter ultra-deep static-pressure single tube immersing ramming grouting pile construction process and device |
| CN201809770U (en) * | 2010-09-21 | 2011-04-27 | 武汉华威建筑桩工机械有限责任公司 | Powerful double-beam gripper of hydraulic static pile press extractor |
-
2011
- 2011-11-29 CN CN2011103860059A patent/CN103132511A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0921234A1 (en) * | 1997-12-04 | 1999-06-09 | Ballast Nedam Funderingstechnieken B.V. | Method and device for arranging a pile in a ground |
| CN1429950A (en) * | 2001-12-29 | 2003-07-16 | 陈川爵 | Press-in bored concrete pile device and construction method |
| CN101761081A (en) * | 2010-01-05 | 2010-06-30 | 赵黎明 | Construction method and equipment of holding and pressing type static-pressure driven cast-in-place pile |
| CN101831908A (en) * | 2010-05-11 | 2010-09-15 | 武汉华威建筑桩工机械有限责任公司 | Large-diameter ultra-deep static-pressure single tube immersing ramming grouting pile construction process and device |
| CN201809770U (en) * | 2010-09-21 | 2011-04-27 | 武汉华威建筑桩工机械有限责任公司 | Powerful double-beam gripper of hydraulic static pile press extractor |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103276731A (en) * | 2013-06-25 | 2013-09-04 | 白波 | Movable pile tip of static pressure gravel sand pile |
| CN103276731B (en) * | 2013-06-25 | 2015-07-22 | 白波 | Movable pile tip of static pressure gravel sand pile |
| CN104895057A (en) * | 2015-05-15 | 2015-09-09 | 上海长凯岩土工程有限公司 | Big diameter steel pipe protective wall artificial digging-hole bottom expanding pile and building foundation reinforcement method |
| CN105369803A (en) * | 2015-12-02 | 2016-03-02 | 陕西聚源基础工程有限公司 | Device and method based on static pressure immersed tube hole forming heavy hammer tamping compaction pile |
| CN115324041A (en) * | 2021-05-11 | 2022-11-11 | 中部城市建设有限公司 | Construction process of root-reinforced pile |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105275381B (en) | Impact drill drilling construction method in rich water pebble layer | |
| CN109630015A (en) | A kind of friction pile mechanical hole building method | |
| CN102720186B (en) | Underwater once pouring method for variable cross-section bored cast-in-place pile | |
| CN104234055A (en) | Precast pile post-grouting device and precast pile post-grouting process | |
| JP6279945B2 (en) | Soil surface anti-slip method for earth structure | |
| CN101629421A (en) | Method for pulling out deep pile foundation by utilizing full slewing drilling machine | |
| CN109505297A (en) | A kind of resistance to compression resistance to plucking variable diameters steel reinforcement cage club-footed pile | |
| CN100532733C (en) | Diving casting cast-in-place pile construction method for constructing in scree layer and sand layer | |
| CN105442532A (en) | Construction method for pile-head-expanded bored pile | |
| CN101575852A (en) | Construction method of wall-retaining bottom-expanding sinking-pipe cast-in-situ piles | |
| CN103132511A (en) | Pile-forming method and pile-forming device for static pressure immersed tube expanded-base cast-in-place pile | |
| CN102808407B (en) | Construction method of soft-foundation reinforced concrete cast-in-place pile | |
| CN111764404A (en) | Partially recyclable secant pile supporting structure and construction method | |
| CN206721870U (en) | A kind of long auger guncreting pile steel reinforcement cage | |
| CN107100164A (en) | A kind of long auger guncreting pile construction method | |
| CN207484290U (en) | The hollow clump of piles anchorage of super-large diameter | |
| CN108385674A (en) | High-bearing capacity thin-wall steel tube concrete pile construction method and device and its application | |
| CN106013042B (en) | A kind of soft soil foundation reinforcing method and the pipe of reinforcing ram | |
| CN105484270B (en) | Reinforcement protection construction method of high steep old rubble retaining wall adjacent to deep foundation pit | |
| CN102677657A (en) | Construction method of row cast thin-walled concrete compound pile wall and special hole forming device thereof | |
| CN109944238A (en) | Pile construction method is rammed in full-sleeve full-rotation | |
| CN102268877A (en) | Construction method for great-depth or large-diameter mechanical expanding caisson pile | |
| CN103911986A (en) | Method for constructing composite repeatedly driven steel pipe piles | |
| CN104895058B (en) | The all-hydraulic two-tube compound club-footed pile machine of static pressure and its construction method | |
| CN108316288A (en) | Half casing guncreting pile construction equipment and construction method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| DD01 | Delivery of document by public notice |
Addressee: Liu Runjiao Document name: Notification of Publication of the Application for Invention |
|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| DD01 | Delivery of document by public notice |
Addressee: Liu Runjiao Document name: the First Notification of an Office Action |
|
| DD01 | Delivery of document by public notice |
Addressee: Liu Runjiao Document name: Notification that Application Deemed to be Withdrawn |
|
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130605 |