CN104120723B - Downwash static pressure pile-sinking method - Google Patents
Downwash static pressure pile-sinking method Download PDFInfo
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- CN104120723B CN104120723B CN201410394592.XA CN201410394592A CN104120723B CN 104120723 B CN104120723 B CN 104120723B CN 201410394592 A CN201410394592 A CN 201410394592A CN 104120723 B CN104120723 B CN 104120723B
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Abstract
The present invention relates to a kind of downwash static pressure pile-sinking method, does is its IPC international Patent classificating number E02D? 7/26.Downwash static pressure pile-sinking method of the present invention, by combining of static pressure pile-sinking and downwash soil body science, both the suitable soil compaction effect remained in construction of Static Pressure Pile, ensure that the validity and reliability of static pressed pile consolidated subsoil, effectively reduce again the soil compaction effect in construction of Static Pressure Pile, solve the sand bed piling difficult problem that hardens in construction of Static Pressure Pile, overcome the soil body that causes because of soil compaction effect to external diffusion, the construction such as soil body lateral displacement negative effect, the surrounding building that can effectively avoid construction of Static Pressure Pile to cause and structure cracking, earth heaving and pipeline are broken, drawing crack accident etc.Downwash equipment arranges limit switch, achieves automatic downwash, the back cover equipment of employing is simple, reliable, makes whole scheme easy and simple to handle, safe and reliable, has extremely strong application value and advance.
Description
Technical field:
The present invention relates to the construction method of a kind of general civil engineering work, traffic bridge, particularly a kind of pile-sinking method, belong to engineering foundation construction field, its IPC international Patent classificating number is E02D7/26.
Background technology:
Along with the development of economic society, the mankind are increasing to high-rise building, Longspan Bridge construction demand, the emphasis in the fields such as ground base enforcement technology Shi Jin more than ten years China building, traffic engineering and focus.Static pressed pile consolidated subsoil be a kind of structure foundation reinforce underpin new technology, static pressure pile method is owing to adopting preformed pile, pile quality, integrality is guaranteed, technique is simple, easy to operate, speed of application is fast, save material, shockproof, noiselessness, construction stress is little, free from environmental pollution, utilize construction termination pressure can reflect basic unit and bearing capacity of single pile situation in real-time objective ground, there is the advantage of information-aided construction, without impact force, stake top is not fragile, pile sinking precision is high, consolidation effect is remarkable, in recent ten years artificial earth fill, weak soil, cohesive soil, silt, flour sand, fine sand, medium sand stiffening basic ground is used widely in field.
Static pressed pile belongs to Squeezing Soil Pile, soil compaction effect is obvious, soil compaction effect can improve the side friction of engineering pile on the one hand, increase bearing capacity of single pile, but it will produce ill effect on the other hand, especially in the area that weak soil extensively distributes, or even destructive engineering accident, this impact is mainly manifested in the following aspects: surrounding building and structure cracking, earth heaving accident; The soil body outwards spreads and drives pipeline sidesway, causes pipeline to break, drawing crack accident etc.Also have a kind of situation to be mingled with the certain thickness sand bed that hardens in consolidated subsoil, pile sinking difficulty, stake end does not reach design elevation, limits application and the popularization of static pressed pile consolidated subsoil to a great extent.For eliminating the soil-squeezing action in piling process, frequent employing drawing bore method or middle pick method solve FAQs above-mentioned in practice of construction, but drawing bore method or middle pick method construction not only counteract construction of Static Pressure Pile shockproof, noiselessness, technique are simple, speed of application is fast, etc. advantage, especially middle pick method corollary equipment and technique are foreign patent, equipment is introduced costly, domestic unit in charge of construction adopts drawing bore method mostly or the method such as the piling time interval, section stake that lengthens solves, and adds construction link and expense.Therefore, find new construction technology and the method soil compaction effect effectively solved in construction of Static Pressure Pile and just seem particularly necessary and real.
Summary of the invention:
The present invention in order to solve deficiency of the prior art, provide a kind of construction cost lower, easy and simple to handle, with the construction method of soil compaction effect in construction of Static Pressure Pile is supporting, safety is high effective solution construction of Static Pressure Pile.
The technical solution used in the present invention is:
Downwash static pressure pile-sinking method, comprising:
(1) laying of sinking apparatus: settle high-pressure hydraulic pump and necessary electromotor equipment thereof on Static pressure pile driver or Static pressure pile driver balancing weight, sludge tank and water tank are arranged on the ground near Static pressure pile driver, slurry collecting bleed off pipe is arranged on pile tube top, downwash pipe is placed in the cavity of described pile tube through described slurry collecting bleed off pipe, the appropriate location of the upper and lower of described slurry collecting bleed off pipe inside wall is set to respectively upper setting spacing and divide into fixing limit, the top of described downwash pipe and described on set spacing and divide into fixing limit displacement transducer is set respectively, for detecting the relative displacement between described downwash pipe and described slurry collecting bleed off pipe, institute's displacement sensors connects limit switch, described limit switch is laid in high-pressure hydraulic pump operation cashier's office in a shop, the bottom of described downwash pipe is provided with downwash nozzle, the top of described downwash pipe is provided with bridge piece, high-pressure hydraulic pump delivery port is connected with described bridge piece by high service sebific duct, high-pressure hydraulic pump water inlet is connected with described water tank by high-pressure hydraulic pump water inlet sebific duct, described slurry collecting bleed off pipe is connected with described sludge tank by mud overflow sebific duct,
(2) pile sinking: start Static pressure pile driver and carry out pressing pile construction, pile tube sinks, in pile tube cavity, the soil body heads on the relative pile tube rising of described downwash pipe, when downwash pipe top rise to described upper setting spacing time, institute's displacement sensors sends signal, described limit switch is opened, manipulate the electric motor starting of described high-pressure hydraulic pump, high-pressure hydraulic pump draws water from described water tank and supplies downwash pipe, the described downwash nozzle ejection high speed and high pressure jetting of downwash pipe bottom impacts the soil body risen in pile tube, the soil body is become mud to flow to described sludge tank from described slurry collecting bleed off pipe and mud overflow sebific duct by erosion, earth in mud is deposited in bottom described sludge tank, muddy water after sedimentation earth from the dividing plate overflow between described sludge tank and water tank to water tank, as recycling water for high-pressure hydraulic pump, along with in pile tube cavity, the erosion of the soil body flows away, and described downwash pipe declines along pile tube, and when dividing into fixing limit described in described downwash pipe top drops to, institute's displacement sensors sends signal, the automatic cutoff high pump power of limit switch, and high-pressure hydraulic pump quits work, so repeatedly, pile tube is sink to setting height, pull down described high service sebific duct, utilize Static pressure pile driver arm that described downwash pipe is hung out in pile tube cavity, pull down the described slurry collecting bleed off pipe on described mud overflow sebific duct and pile tube top, displacement stake machine carries out next piling construction,
(3) laying of back cover equipment: top is arranged on the shear legs of fixed pulley the pile tube overcentre that pile sinking terminates, on the pile tube top that pile sinking terminates, angle pulley is installed, near described shear legs, suitable location installs manpower winch, concrete bucket utilizes top lifting rope and end lifting rope successively through described fixed pulley and angle pulley, is connected with described manpower winch; Described top lifting rope lifts by crane described concrete bucket by top connection cord, lifting rope of the described end (18) is connected by end lifting rope location steel loop hangs bottom tray bottom described concrete bucket, described in hang bottom tray and hold up back cover and the lifting that well-bucket back cover petal realizes concrete bucket;
(4) back cover construction: the design grade concrete of about slump 12cm is filled to described concrete bucket, promote manpower winch and the pile tube inner chamber that described concrete bucket terminates along pile sinking is sunk down into desired location, draw high described top lifting rope, appropriateness lax described end lifting rope, open at the bottom of the bucket of described concrete bucket, concrete is sunk to pile tube intracavity bottom, then shift manpower winch onto to be hung out from pile tube inner chamber by concrete bucket, concrete realizes pile tube back cover in the natural coagulation of pile tube intracavity bottom.
Downwash static pressure pile-sinking method of the present invention, by combining of static pressure pile-sinking and downwash soil body science, both the suitable soil compaction effect remained in construction of Static Pressure Pile, ensure that the validity and reliability of static pressed pile consolidated subsoil, effectively reduce again the soil compaction effect in construction of Static Pressure Pile, solve the sand bed piling difficult problem that hardens in construction of Static Pressure Pile, overcome the soil body that causes because of soil compaction effect to external diffusion, the construction such as soil body lateral displacement negative effect, the surrounding building that can effectively avoid construction of Static Pressure Pile to cause and structure cracking, earth heaving and pipeline are broken, drawing crack accident etc.Downwash equipment arranges limit switch, achieve automatic downwash, the back cover equipment adopted is simple, reliable, make that whole scheme is easy and simple to handle, safe and reliable, energy-conserving and environment-protective, expense be low, Automated parallel operation, overcome the construction shortcoming of external middle pick method to a great extent, be highly suitable for artificial earth fill, weak soil, cohesive soil, silt, flour sand, fine sand, medium sand Base Consolidation Engineering, there is extremely strong application value and advance.
Accompanying drawing illustrates:
Fig. 1 is the downwash static pressure pile-sinking equipment that adopts of the present invention and arranges schematic diagram;
Fig. 2 is the pile tube back cover device structure schematic diagram that the present invention adopts.
Fig. 3 is the pile tube back cover apparatus arrangement schematic diagram that the present invention adopts.
In figure, 1 pile tube, 2 downwash pipes, 3 slurry collecting bleed off pipes, 4 bridge pieces, 5 high service sebific ducts, 6 high-pressure hydraulic pump delivery ports, 7 high-pressure hydraulic pumps, 8 high-pressure hydraulic pump water inlets, 9 high-pressure hydraulic pump water inlet sebific ducts, 10 mud overflow sebific ducts, 11 Static pressure pile driver arms, 12 water tanks, 13 sludge tanks, 14 Static pressure pile driver balancing weights, 15 downwash nozzles, 16 deposition earth, 17 top lifting ropes, 18 end lifting ropes, 19 top connection cords, 20 lifting rope location, end steel loops, 21 concrete bucket, reinforcing bar fixed by 22 lifting rope location, end steel loops, 23 hang bottom tray, 24 well-bucket back cover petals, 25 sulky derricks, 26 manpower winches, 27 fixed pulleys, 28 angle pulleies.
Detailed description of the invention:
Below in conjunction with Fig. 1-Fig. 3, the present invention is elaborated.
Downwash static pressure pile-sinking method, comprises construction equipment and lays and operating technology and technique:
(1) laying of sinking apparatus
On Static pressure pile driver or Static pressure pile driver balancing weight 14, high-pressure hydraulic pump 7 and necessary electromotor equipment thereof are settled in appropriate place, slurry collecting bleed off pipe 3 is arranged on treats pressure pipe stake 1 top, sludge tank 13 and water tank 12 be arranged in Static pressure pile driver arm 11 can and scope, do not affect pressing pile construction, deposition earth is convenient on the neighbouring ground of removing, high-pressure hydraulic pump delivery port 6 and water inlet 8 are respectively by high service sebific duct 5, high-pressure hydraulic pump water inlet sebific duct 9 is connected with water tank 12 with downwash pipe bridge piece 4, slurry collecting bleed off pipe 3 is connected with sludge tank 13 by mud overflow sebific duct 10, high-pressure hydraulic pump 7 operate cabinet be arranged in facilitate pressing pile construction and water pump operation stake machine near on ground, the downwash pipe 2 that top is provided with bridge piece 4 is vertically placed on through slurry collecting bleed off pipe 3 to be treated in pressure pipe stake 1 cavity.The appropriate location of the upper and lower of described slurry collecting bleed off pipe 3 inside wall is set to respectively upper setting spacing and divide into fixing limit, the top of described downwash pipe 2 and described on set spacing and divide into fixing limit displacement transducer is set respectively, for detecting the relative displacement between downwash pipe 2 and slurry collecting bleed off pipe 3, institute's displacement sensors connects limit switch, and described limit switch is laid in high-pressure hydraulic pump operation cashier's office in a shop.
(2) pile sinking operation
Start Static pressure pile driver and carry out pressing pile construction, treat that pressure pipe stake 1 is sunk, in pile tube cavity, the soil body heads on downwash pipe 2 pile tube 1 ascending motion relatively, ascending motion distance reach described upper setting spacing time, institute's displacement sensors sends signal, described limit switch is opened, manipulate the electric motor starting of described high-pressure hydraulic pump 7, high-pressure hydraulic pump 7 draws water from water tank 12 and supplies downwash pipe 2, downwash pipe 2 bottom at a high speed, water jetting at high pressure impacts the soil body that in pile tube 1, piling is risen, soil body erosion becomes mud from the slurry collecting bleed off pipe 3 on pile tube top, mud overflow sebific duct 10 flows to the sludge tank 13 on ground, earth sedimentation, muddy water after sedimentation earth from the dividing plate overflow between sludge tank 13 and water tank 12 to water tank 12, use as recycling water supply-water pump.
In downwash pipe 2 erosion pile tube 1 cavity, the soil body declines along pile tube endoporus, when dividing into fixing limit described in dropping to, limit switch automatic cutoff high water pump 7 power supply, high-pressure hydraulic pump 7 motor quit work, so repeatedly realize pile tube completes the operation of downwash static pressure pile-sinking in less soil compaction effect situation, pull down the water pump water supply sebific duct 5 on downwash pipe 2 top, utilize Static pressure pile driver arm 11 that downwash pipe 2 is hung out in pile tube 1 cavity, pull down mud overflow sebific duct 10 and pile tube top slurry collecting bleed off pipe 3, displacement stake machine carries out next piling construction, for the situation needing pile connection construction, when first segment pile tube top is sink to setting height, the bridge piece 4 pulling down downwash pipe 2 top is connected with downwash pipe extension spray lance, pull down mud overflow sebific duct 10 and first segment pile tube top slurry collecting bleed off pipe 3 is installed to second section pile tube one end, the second section that downwash pipe 2 extension spray lance being connected with water pump water supply sebific duct 5 lies in a horizontal plane in through slurry collecting bleed off pipe 3 ground that lies low is treated in pressure pipe stake cavity, Static pressure pile driver arm 11 is utilized to lift by crane slurry collecting bleed off pipe 3 hanger, second section is treated pressure pipe stake and related high service sebific duct 5 thereof, mud overflow sebific duct 10 and downwash pipe extension spray lance etc. winch to design attitude, connect downwash pipe extension spray lance, pile extension, enter downwash static pressure pile-sinking construction operation.
(3) back cover implantation of device
Shear legs 25 with fixed pulley 27 is arranged on the pile tube overcentre that pile sinking terminates, on the pile tube top that pile sinking terminates, angle pulley 28 is installed, near shear legs 25, suitable location installs manpower winch 26, concrete bucket 21 hangs on fixed pulley 27, utilize top lifting rope 17, end lifting rope 18 and fixed pulley 27, angle pulley 28 is connected with manpower winch 26 described in shear legs 25, top lifting rope 17 is by top connection cord lifting concrete bucket 21, end lifting rope 18 hangs bottom tray 23 by steel loop 20 connection of end lifting rope location, hold up well-bucket back cover petal 24, realize back cover and the lifting of concrete bucket 21.
(4) back cover construction
The design grade concrete of about slump 12cm is filled to concrete bucket 21, promote manpower winch 26, by end lifting rope 18, the pile tube inner chamber that concrete bucket 21 terminates along pile sinking is sunk down into desired location, draw high top lifting rope 17, appropriateness lax end lifting rope 18, well-bucket back cover petal 24 is opened, thus open at the bottom of concrete bucket 21 barrels, concrete is sunk to pile tube 1 cavity bottom, promote manpower winch 26 concrete bucket 21 is hung out from pile tube 1 inner chamber, concrete realizes pile tube 1 back cover in the natural coagulation under water of pile tube 1 intracavity bottom, completes the construction of whole root canal pile.
Claims (1)
1. downwash static pressure pile-sinking method, comprising:
(1) laying of sinking apparatus: settle high-pressure hydraulic pump (7) and necessary electromotor equipment thereof on Static pressure pile driver or Static pressure pile driver balancing weight (14), sludge tank (13) and water tank (12) are arranged on the ground near Static pressure pile driver, slurry collecting bleed off pipe (3) is arranged on pile tube (1) top, downwash pipe (2) is placed in the cavity of described pile tube (1) through described slurry collecting bleed off pipe (3), the appropriate location of the upper and lower of described slurry collecting bleed off pipe (3) inside wall is set to respectively upper setting spacing and divide into fixing limit, the top of described downwash pipe (2) and described upper setting spacing and divide into fixing limit displacement transducer is set respectively, for detecting the relative displacement between described downwash pipe (2) and described slurry collecting bleed off pipe (3), institute's displacement sensors connects limit switch, described limit switch is laid in high-pressure hydraulic pump operation cashier's office in a shop, the bottom of described downwash pipe (2) is provided with downwash nozzle (15), the top of described downwash pipe (2) is provided with bridge piece (4), high-pressure hydraulic pump delivery port (6) is connected with described bridge piece (4) by high service sebific duct (5), high-pressure hydraulic pump water inlet (8) is connected with described water tank (12) by high-pressure hydraulic pump sebific duct (9) of intaking, described slurry collecting bleed off pipe (3) is connected with described sludge tank (13) by mud overflow sebific duct (10),
(2) pile sinking: start Static pressure pile driver and carry out pressing pile construction, pile tube (1) sinks, in pile tube (1) cavity, the soil body heads on pile tube (1) rising relatively of described downwash pipe (2), when downwash pipe (2) top rise to described upper setting spacing time, institute's displacement sensors sends signal, described limit switch is opened, manipulate the electric motor starting of described high-pressure hydraulic pump (7), high-pressure hydraulic pump (7) draws water from described water tank (12) and supplies downwash pipe (2), described downwash nozzle (15) the ejection high speed and high pressure jetting of downwash pipe bottom impacts the soil body risen in pile tube (1), the soil body is become mud to flow to described sludge tank (13) from described slurry collecting bleed off pipe (3) and mud overflow sebific duct (10) by erosion, earth in mud is deposited in described sludge tank (13) bottom, muddy water after sedimentation earth from the dividing plate overflow between described sludge tank (13) and water tank (12) to water tank (12), as recycling water for high-pressure hydraulic pump (7), along with in pile tube (1) cavity, the erosion of the soil body flows away, described downwash pipe (2) declines along pile tube, when dividing into fixing limit described in described downwash pipe (2) top drops to, institute's displacement sensors sends signal, limit switch automatic cutoff high water pump (7) power supply, high-pressure hydraulic pump (7) quits work, so repeatedly, pile tube (1) is sink to setting height, pull down described high service sebific duct (5), utilize Static pressure pile driver arm (11) that described downwash pipe (2) is hung out in pile tube (1) cavity, pull down the described slurry collecting bleed off pipe (3) on described mud overflow sebific duct (10) and pile tube (1) top, displacement stake machine carries out next piling construction,
(3) laying of back cover equipment: top is arranged on the shear legs (25) of fixed pulley (27) pile tube (1) overcentre that pile sinking terminates, on pile tube (1) top that pile sinking terminates, angle pulley (28) is installed, near described shear legs (25), suitable location installs manpower winch (26), concrete bucket (21) utilizes top lifting rope (17) and end lifting rope (18) successively through described fixed pulley (27) and angle pulley (28), is connected with described manpower winch (26); Described concrete bucket (21) is lifted by crane by top connection cord (19) in described top lifting rope (17), what lifting rope of the described end (18) connected described concrete bucket (21) bottom by end lifting rope location steel loop (20) hangs bottom tray (23), described in hang bottom tray (23) and hold up well-bucket back cover petal (24) and realize back cover and the lifting of concrete bucket (21);
(4) back cover construction: the design grade concrete of slump 12cm is filled to described concrete bucket (21), pile tube (1) inner chamber that described concrete bucket (21) terminates along pile sinking by promotion manpower winch (26) sinks down into desired location, draw high described top lifting rope (17), appropriateness lax lifting rope of the described end (18), open at the bottom of the bucket of described concrete bucket (21), concrete is sunk to pile tube (1) intracavity bottom, then promote manpower winch (26) concrete bucket (21) is hung out from pile tube (1) inner chamber, concrete realizes pile tube back cover in pile tube (1) intracavity bottom natural coagulation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410394592.XA CN104120723B (en) | 2014-08-11 | 2014-08-11 | Downwash static pressure pile-sinking method |
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| CN201410394592.XA CN104120723B (en) | 2014-08-11 | 2014-08-11 | Downwash static pressure pile-sinking method |
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| CN104120723B true CN104120723B (en) | 2015-12-02 |
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| CN105863531A (en) * | 2016-05-27 | 2016-08-17 | 安徽科恩新能源有限公司 | Slurry collection device of ground source heat pump |
| CN106088092B (en) * | 2016-06-21 | 2018-11-13 | 中国电建集团华东勘测设计研究院有限公司 | Pile pile piling process occurs refusing the solution of hammer situation |
| CN109736311B (en) * | 2018-12-14 | 2020-08-14 | 东南大学 | Light-duty intelligent insertion device of well point pipe for precipitation of foundation pit in river course |
| CN110714464A (en) * | 2019-10-25 | 2020-01-21 | 江苏地基工程有限公司 | Construction equipment and construction method for tubular pile in dense sand layer |
| CN113957949A (en) * | 2021-11-24 | 2022-01-21 | 中建东设岩土工程有限公司 | Water circulation system of drilling pump in static pressure pipe pile |
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| CN200971504Y (en) * | 2006-10-20 | 2007-11-07 | 刘效凡 | Static drill spinning pile placing machine |
| CN101538857A (en) * | 2009-04-10 | 2009-09-23 | 黄河水利委员会河南黄河河务局 | Pile extraction construction method |
| CN102031780A (en) * | 2010-12-13 | 2011-04-27 | 广东省第二建筑工程公司 | Water flushing construction method of static tubular pile of sand pile tip |
| KR101378732B1 (en) * | 2012-05-21 | 2014-04-23 | 이송 | Composition of a square shape using high pressure jet grouting techniques Retaining Wall Composition Method |
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Granted publication date: 20151202 Termination date: 20170811 |