CN1727580A - File head broken by water injection - Google Patents
File head broken by water injection Download PDFInfo
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- CN1727580A CN1727580A CN 200510026313 CN200510026313A CN1727580A CN 1727580 A CN1727580 A CN 1727580A CN 200510026313 CN200510026313 CN 200510026313 CN 200510026313 A CN200510026313 A CN 200510026313A CN 1727580 A CN1727580 A CN 1727580A
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- jetting
- discharge jet
- pile crown
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Abstract
A water jet method for breaking pile head includes such steps as drilling, pouring concrete pile underwater, sinking the water-jetting pipe in the concrete in fluid state, flushing the concrete above the designed height by high-pressure water for removing the cement from the concrete, and pumping the cement sludge in the tank or deposition pool by sludge pump.
Description
Technical field
File head broken by water injection of the present invention belongs to the broken pile crown of bored pile.
Background technology
The broken pile crown of bored pile all was that after each pier bored pile construction finished, concrete piles reached certain intensity by the time based on artificial broken pile crown in the past, just allowed the earthwork of excavation cushion cap part.At this moment pile crown concrete generally all has very high intensity, and the main tool of employing is electronic pneumatic pick and is aided with artificial cutter sled, and construction speed is slow, work efficiency is low, especially to the broken pile crown of a clump of piles because the scope of operation is little, and difficulty of construction is big, workman's construction environment is poor, wastes time and energy.Reinforcing bar twists usually cause the drill-pouring pile head in the process of broken pile crown around, and the straightening difficulty influences workmanship; And the pile crown concrete of abolishing does not have value, forms building waste, and surrounding environment is impacted.
Summary of the invention
Technical problem to be solved by this invention, provide a kind of construction technology (method), be after the bored pile underwater concrete pouring finishes, be stream at the above concrete mixture of pile crown design elevation and mould (concrete does not have any intensity) under the state, and then utilize the concrete mixture high pressure water washing of water jetting with the above reserved part of pile crown design elevation, outside cement paste in concrete mixture flushing portalled with current, with slush pump cement paste is extracted in the mud storage bin, makes pile crown part concrete mixture that coarse aggregate (rubble) and fines (sand) only be arranged behind high pressure water washing.When constructing cushion cap or binder by the time, excavation cushion cap or binder foundation ditch groove are excavated the earth around the pile crown earlier, then the aggregate rubble and the sand of pile crown part are recycled.
File head broken by water injection of the present invention has following advantage:
(1) avoid that the broken pile crown construction speed of tradition is slow, work efficiency is low, especially to the broken pile crown of a clump of piles because the construction operation faciostenosis, difficulty of construction is big, workman's construction environment is poor, wastes time and energy.Pile crown concrete piece forms building waste, surrounding environment is caused shortcomings such as harmful effect;
(2) file head broken by water injection technology is simple, design easily such as jetting equipment such as water pump, water-supply-pipe, discharge jet and water source, assembling and check;
(3) the file head broken by water injection construction speed is fast, can save the duration, accelerates works construction speeds such as bridge;
(4) the file head broken by water injection constructing operation is simple, easily learns usefulness, grasps the energy penetration and promotion easily;
(5) overcome the broken pile crown pneumatic pick operation of tradition acoustic environment is polluted, realized the noiseless operation;
(6) biggest advantage is that aggregate (rubble and sand) in the pile crown concrete can be recycled, can economical with materials, save labour cost, and reduce construction cost, bring economic benefit to engineering.
In a word, the present invention can overcome the construction shortcoming of traditional handicraft, and economical with materials is saved labour cost, reduces construction cost, accelerating construction progress, and protection social environment and ecological environment prevent the pollution of the environment.
Description of drawings
Fig. 1 is the construction flow chart of file head broken by water injection.
Fig. 2 is the construction technology schematic diagram of file head broken by water injection.Wherein 1 is discharge jet, the 2nd, handle, the 3rd, and withstand voltage outlet pipe, the 4th, safety valve, the 5th, high-pressure hydraulic pump, the 6th, withstand voltage water inlet pipe, the 7th, water tank, the 8th, generator, the 9th, pile crown is reserved concrete, the 10th, reinforcing cage, the 11st, concrete piles.
Fig. 3 is a file head broken by water injection single-point jetting construction sequence schematic diagram.Wherein 1 is discharge jet, the 2nd, handle, the 12nd, steel sleeve, the 13rd, shower nozzle, the 14th, jetting.
The specific embodiment
File head broken by water injection technology of the present invention, be after the bored pile underwater concrete pouring finishes, be stream at the above concrete mixture of pile crown design elevation and mould (concrete does not have any intensity) under the state, and then utilize discharge jet or hydraulic giant to be sunken in the pile crown concrete mixture under progressive, concrete mixture high pressure water washing with the above reserved part of pile crown design elevation, cementitious material in the pile crown concrete (cement) is rinsed out, cement paste is with outside the muddy water come-up tap hole, and with slush pump cement paste drawn to storage bin or sedimentation basin.Discharge jet is made with high pressure resistant seamless steel pipe, and the length of every joint discharge jet, aperture, wall thickness and the pressure that bears can design according to actual needs, and the joint of discharge jet connects with the screw steel sleeve that has sealing ring, discharge jet can singlely be laid, also can many layings, disposed at equal distance jetting point during jetting, distance equals the effective radius of discharge jet effect, during jetting from top to bottom, from inside to outside, hydraulic pressure is suitable, slowly carries out equably, but stop jetting during near the pile crown absolute altitude, extract discharge jet.When sinking discharge jet length is not enough, stop jetting, take off the hydraulic giant handle, tube coupling is installed at the discharge jet top, refill the hydraulic giant handle and continue jetting; When extracting discharge jet, should stop jetting, remove discharge jet by joint from top to bottom.
Lift following specific embodiment:
An engineering left side, viaduct eastern section, the Wenshui River road, Middle Ring Line, Shanghai City (A2.5 mark) No. 33 pier bored piles, this pier has 8 of bored piles, the stake footpath is 0.8 meter of Φ, natural ground level is+3.3 meters, stake top design elevation is+0.91 meter, regulation by Shanghai municipal engineering bridge construction standard: the design elevation above concrete height of reserving in bored pile stake top is not less than 2 meters, then discharge jet and outlet pipe design permission water pressure is 8Mpa, the Design of length of discharge jet is 3 meters, be divided into three joints, every joint length is 0.8～1.2 meter, the internal diameter of discharge jet is 3 centimetres, thickness of pipe wall is 5 millimeters a seamless steel pipe, and the joint of discharge jet connects with screw socket steel bushing (two ends have the fluid sealant packing ring).The shower nozzle aperture is 1.0cm, shower nozzle is a cone, outlet pipe is selected high pressure resistant (being not less than 8Mpa) flexible serpentine canal, internal diameter is 5.0cm, and water inlet pipe is selected flexible serpentine canal, and internal diameter is 5.0cm, water pump is selected the vacuum pump that water pressure is not less than 8Mpa, select the diesel-driven generator power supply of 50kw, select the slush pump of 10kw, the water source is a tap water.When this pier first pile underwater concrete pouring soon finishes, and then install jetting equipment, utilize drilling machine platform to carry out the jetting operation, the discharge jet subsidence velocity is 0.5m-1.0m/ minute, the form of layouting of jetting point is the helix of equidistant (30cm), point is 30cm with the distance of putting, and the effective radius of jetting effect is 30cm, during jetting from the stake center of circle, equidistantly, at the uniform velocity from top to bottom, from inside to outside, carry out operation, peripheral reinforcing bar place carries out after backwashing multi-prongedly, guarantee the anhydrous mud bonding of reinforcing bar, after treating that last pile construction of this cushion cap finishes, after concrete piles reaches certain intensity (being generally 7 days intensity of concrete), the excavation pit earthwork, remove stake earth all around, reclaim the sandstone material of pile crown, artificial equating pile crown concrete moves pile body then and surveys check.
Claims (2)
1, file head broken by water injection technology of the present invention, be after the bored pile underwater concrete pouring finishes, be stream at the above concrete mixture of pile crown design elevation and mould (concrete does not have any intensity) under the state, and then utilize discharge jet or hydraulic giant to be sunken in the pile crown concrete mixture under progressive, concrete mixture high pressure water washing with the above reserved part of pile crown design elevation, cementitious material in the pile crown concrete (cement) is rinsed out, cement paste is with outside the muddy water come-up tap hole, and with slush pump cement paste drawn to storage bin or sedimentation basin.Discharge jet is made with high pressure resistant seamless steel pipe, and the length of every joint discharge jet, aperture, wall thickness and the pressure that bears can design according to actual needs, and the joint of discharge jet connects with the screw steel sleeve that has sealing ring, discharge jet can singlely be laid, also can many layings, disposed at equal distance jetting point during jetting, distance equals the effective radius of discharge jet effect, during jetting from top to bottom, from inside to outside, hydraulic pressure is suitable, slowly carries out equably, but stop jetting during near the pile crown absolute altitude, extract discharge jet.When sinking discharge jet length is not enough, stop jetting, take off the hydraulic giant handle, tube coupling is installed at the discharge jet top, refill the hydraulic giant handle and continue jetting; When extracting discharge jet, should stop jetting, remove discharge jet by joint from top to bottom.
2, construction technology: bored pile underwater concrete pouring → the determine jetting degree of depth and water source → installation jetting equipment → determine jetting hydraulic pressure and subsidence velocity → determine jetting point arrangement form and distance → installation discharge jet, shower nozzle and handle → beginning jetting immersed tube clean → stop next some jetting of jetting → extract discharge jet → move to → cement paste is evacuated to sedimentation basin → excavation cushion cap pit earthwork → recovery pile crown rubble and sand → manual amendment pile crown → pile body is detected partly with slush pump near the pile crown design elevation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510026313 CN1727580A (en) | 2005-05-31 | 2005-05-31 | File head broken by water injection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510026313 CN1727580A (en) | 2005-05-31 | 2005-05-31 | File head broken by water injection |
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| CN1727580A true CN1727580A (en) | 2006-02-01 |
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| CN 200510026313 Pending CN1727580A (en) | 2005-05-31 | 2005-05-31 | File head broken by water injection |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101876171A (en) * | 2010-04-29 | 2010-11-03 | 中交隧道工程局有限公司 | New method for water washing and decomposing to break pile head of bridge pile foundation |
| CN101634147B (en) * | 2009-07-17 | 2011-04-20 | 中冶实久建设有限公司 | Method for demolishing ultra high cast-in-place pile head |
| CN102383416A (en) * | 2011-08-16 | 2012-03-21 | 中建三局建设工程股份有限公司 | High-pressure air-water steel plate pile and use method thereof |
| CN102400467A (en) * | 2011-11-22 | 2012-04-04 | 中铁三局集团第六工程有限公司 | Cofferdam construction method for inserting and driving steel plate pile with assistance of high-pressure water jetting |
| CN103104136A (en) * | 2013-01-29 | 2013-05-15 | 中国水产科学研究院东海水产研究所 | Simply-equipped rapid mud flat enclosure mesh arrangement method |
| CN103485343A (en) * | 2013-09-03 | 2014-01-01 | 深圳市金世纪工程实业有限公司 | Pile head processing method of filling pile |
| CN104099932A (en) * | 2014-07-10 | 2014-10-15 | 郑州市市政工程总公司 | Breaking device and breaking method of pile head of underwater concrete pile |
| CN105089055A (en) * | 2015-09-09 | 2015-11-25 | 中国铁建大桥工程局集团有限公司 | Air supply device and method for cleaning bridge drilled pile head through air supply device |
| CN110965553A (en) * | 2019-12-21 | 2020-04-07 | 一山(北京)岩土工程有限公司 | High-efficient broken pile head device |
| CN110965554A (en) * | 2019-12-21 | 2020-04-07 | 一山(北京)岩土工程有限公司 | Construction method for improving pile head crushing efficiency |
| CN111910622A (en) * | 2020-07-13 | 2020-11-10 | 毕竞东 | Construction method of bored pile without pile head |
| CN112502754A (en) * | 2020-07-30 | 2021-03-16 | 厦门能巧堂建筑工程有限公司 | Construction method of oversized-diameter anchoring body |
-
2005
- 2005-05-31 CN CN 200510026313 patent/CN1727580A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101634147B (en) * | 2009-07-17 | 2011-04-20 | 中冶实久建设有限公司 | Method for demolishing ultra high cast-in-place pile head |
| CN101876171B (en) * | 2010-04-29 | 2014-10-22 | 中交隧道工程局有限公司 | New method for water washing and decomposing to break pile head of bridge pile foundation |
| CN101876171A (en) * | 2010-04-29 | 2010-11-03 | 中交隧道工程局有限公司 | New method for water washing and decomposing to break pile head of bridge pile foundation |
| CN102383416A (en) * | 2011-08-16 | 2012-03-21 | 中建三局建设工程股份有限公司 | High-pressure air-water steel plate pile and use method thereof |
| CN102400467A (en) * | 2011-11-22 | 2012-04-04 | 中铁三局集团第六工程有限公司 | Cofferdam construction method for inserting and driving steel plate pile with assistance of high-pressure water jetting |
| CN103104136B (en) * | 2013-01-29 | 2016-03-30 | 中国水产科学研究院东海水产研究所 | A kind of beach enclosure of simple and fast establishes network method |
| CN103104136A (en) * | 2013-01-29 | 2013-05-15 | 中国水产科学研究院东海水产研究所 | Simply-equipped rapid mud flat enclosure mesh arrangement method |
| CN103485343A (en) * | 2013-09-03 | 2014-01-01 | 深圳市金世纪工程实业有限公司 | Pile head processing method of filling pile |
| CN104099932A (en) * | 2014-07-10 | 2014-10-15 | 郑州市市政工程总公司 | Breaking device and breaking method of pile head of underwater concrete pile |
| CN104099932B (en) * | 2014-07-10 | 2016-08-17 | 郑州市市政工程总公司 | A kind of underwater concrete filling pile pile crown abolish devices and methods therefor |
| CN105089055A (en) * | 2015-09-09 | 2015-11-25 | 中国铁建大桥工程局集团有限公司 | Air supply device and method for cleaning bridge drilled pile head through air supply device |
| CN110965553A (en) * | 2019-12-21 | 2020-04-07 | 一山(北京)岩土工程有限公司 | High-efficient broken pile head device |
| CN110965554A (en) * | 2019-12-21 | 2020-04-07 | 一山(北京)岩土工程有限公司 | Construction method for improving pile head crushing efficiency |
| CN111910622A (en) * | 2020-07-13 | 2020-11-10 | 毕竞东 | Construction method of bored pile without pile head |
| CN112502754A (en) * | 2020-07-30 | 2021-03-16 | 厦门能巧堂建筑工程有限公司 | Construction method of oversized-diameter anchoring body |
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