CN104762956B - Method for forming pile based on construction waste recycled aggregate - Google Patents
Method for forming pile based on construction waste recycled aggregate Download PDFInfo
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- CN104762956B CN104762956B CN201510122938.5A CN201510122938A CN104762956B CN 104762956 B CN104762956 B CN 104762956B CN 201510122938 A CN201510122938 A CN 201510122938A CN 104762956 B CN104762956 B CN 104762956B
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- 230000002787 reinforcement Effects 0.000 claims abstract description 28
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 25
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Abstract
The invention discloses a method for forming a pile based on construction waste recycled aggregate. The pile is manufactured by taking the construction waste as the aggregate; the method comprises the steps of pretreating the construction waste before pipe formation, next, measuring a pile position and embedding a pile casing; forming holes by use of a spiral drilling machine, pouring concrete cushion layers on the bottoms of the holes, lowering down a steel reinforcement cage in the drilled holes, filling the casing with the construction wastes at different layers and compacting by use of a column hammer to form a compacted layer, pouring concrete into the steel reinforcement cage, vibrating for compacting and forming, and then lifting the casing to a certain height, filling in the construction waste, compacting by use of the column hammer, repeating the process until the filler thickness reaches the designed elevation, pulling out the casing, and lifting out the pile casing, thereby forming the pile based on the construction waste recycled aggregate. The pile has the advantages of resource recycling, energy saving and consumption reduction, going green and environmental protection, good anti-shearing and compression resistance effect, small deformation, stable structure, good balance, high single pile bearing capacity, durability and the like.
Description
Technical field
The invention belongs to technical field of civil engineering is and in particular to a kind of pile side based on construction refuse regenerated aggregate stake
Method.
Background technology
With the development of China's Development of China's Urbanization, building waste discharge capacity increases year by year, and renewable component ratio is also continuous
Improve.However, most of building waste, without any process, is transported to countryside or surrounding city is simply filled or outdoor heap
Deposit, this not only wastes soil and resource, also pollute environment.On the other hand, increasing with population, building industry is to sand
The demand of stone aggregate constantly increases.For a long time, because sandstone aggregate wide material sources are easy to get, cheap it is considered to be taking
Raw material not to the utmost, nexhaustible and arbitrarily exploited, thus leading to resource exhaustion, landslide, riverbed to change its course, seriously break
It is broken natural environment.Using construction refuse regenerated aggregate for economizing on resources, environmental protection and the sustainable development realizing building industry
Exhibition is significant.
The subproblem that engineering field exists at present: prefabricated pile, driven cast-in-place pile, when being sunk with hammering or vibratory drilling method, are applied
Work noise is big, pollutes environment, should not use around residential area；Precast reinforced concrete pile, driven cast-in-place pile (no matter squeeze into,
Press-in or vibration) belong to Squeezing Soil Pile, carrying out intensive pile group construction in saturated soft soil will make super interstitial hydraulic pressure in soil acute
Increase, surface uplift (50m in such as stake area, protuberance cumulative volume is about stake and buries the 40% of volume), shallow-layer earth horizontal displacement, depth
Layer soil body horizontal displacement, the stake first setting are lifted to squeeze and partially even bend and rupture, and thus will result in various harm, including original
Building sinks or local is lifted so that structural deterioration；Limited by capacity of equipment, the length of single-unit prefabricated pile can not be long, typically
Within 30m, if needing pile extension when longer, precast reinforced concrete pile is difficult to penetrate thicker hard soil layer, due to saving calipers
Lattice cannot be changed temporarily, when pile sinking is unable to reach design altitude, would have to cut stake；The joint of prefabricated pile is often the weakness of pile body
Link, the soil compaction effect of pile sinking can make the stake first setting be lifted, if pile extension is not firm, upper and lower two section stakes can be made to disengage, sink
The soil compaction effect of pipe perfusion pile is it is also possible that hard adjacent stake not yet tied by concrete is cut off；Squeeze into trocar sheath in ground, carry out
Layering filler is rammed closely knit, gives full play to the compacted pile shaft material in formed composite foundation and pile peripheral earth to participate in being subject to
Power, which is only to define composite foundation not forming pile foundation.
Content of the invention
In order to solve the deficiencies in the prior art, the present invention proposes a kind of pile side based on construction refuse regenerated aggregate stake
Method.This programme, by building waste and appropriate cement mortar making compacted pile, constitutes a kind of stake of high-adaptability.
The present invention adopts the following technical scheme that
A kind of pile making method based on construction refuse regenerated aggregate stake, makes stake with building waste for aggregate, before pile first
Building waste is carried out pretreatment, the pile making method that building waste is used as regeneration aggregate adopts following steps:
(1) survey fixed pile, bury casing at stake position；
(2) in the ground at stake position, using twist bit pore-forming；
(3) fill out suitable building waste filler toward bottom hole, so that it is spread toward surrounding soil with heavy tamping filler compacted, improve
Pile bottom force holding layer bearing capacity；
(4) mixing concrete cushion materials, in bottom hole casting concrete bed course；
(5) steel reinforcement cage, concrete perfusion vibration compacting molding in the hollow cylinder of steel reinforcement cage bottom are transferred in the borehole；
(6) at the heart of upper reinforcement cage hole, one diameter of setting is less than the sleeve pipe of steel reinforcement cage annular diameters；
(7) into sleeve pipe, the building waste meeting intensity requirement is inserted in layering, hammers compacting into shape with post, forms compacted layer；
(8) pour concrete with this compacted layer equal thickness toward in the steel reinforcement cage wrapping up this compacted layer, vibration compacting molding,
It is then lifted out sleeve pipe to certain altitude, repeat step (7), be so repeated, until depth of packing reaches designed elevation, finally
Casting concrete mix thickness is higher than designed elevation 0.5m, extracts sleeve pipe, proposes casing, is formed and is based on construction refuse regenerated bone
Material stake.
Further, described building waste carry out pretreatment include classification, pulverize, screening, so that the particle diameter of building waste is existed
Between 35mm-40mm, the objectionable impurities that building waste removal after break process for the cleaning is mixed into, mixing one-tenth meets country and is used for
The concrete mix of stake intensity requirement.
Further, described concrete mix includes building waste aggregate, aggregate chips, cement and additive；
Described building waste aggregate size is between 35mm-40mm, loose thickness 1.39t/m3, impurity content is less than 5%；
Described aggregate chips particle diameter is between 2.5mm-10mm, loose thickness 1.47t/m3, impurity content is less than 5%；
Described cement grade is not less than 32.5 grades, and 0.44 about, every cubic meter of concrete cement consumption is many for the ratio of mud
In 350kg, the ratio of flyash and cement in 1.02-1.65, with the sand of modulus of fineness 2.3-2.5,40% husky rate；
Blend a certain amount of additive to adjust the performance of concrete mix, the strength grade of concrete pouring must not be low
In c20, the slump controls in 150mm-200mm.
Further, described additive includes improving the water reducer of concrete mix rheological property, mixed for improving
Coagulate the waterproofing agent of soil durability, be effectively improved the cohesiveness of concrete mix and the air entraining agent of water-retaining property.
Further, the casing in described step (1) is made up of the thick steel plate of 3mm-5mm, and its internal diameter is more than bit diameter,
Bigger 20cm-30cm than stake diameter, often save 2m, top weldering reinforcement and hanger, open mud mouth, 20cm above ground level, casing adopts
Dig buried method to bury, the centrage of casing cannot be greater than 30mm with the centerline deviation of stake position, and the embedded of casing should be firm close
Real, the 30cm to level of ground water is buried in casing bottom, is not less than 1.5m when being embedded in sand, is embedded in clay and is not less than 1m,
Clay compaction in layers is applied between casing and crater wall, if necessary in the cement mortar that topping laying 20mm is thick, in case leak-stopping water,
On casing, setting 2 is overflow and is starched mouth, and the mud being easy to overflow flows back to mud pit and recycles, and casing should 0.4m-0.6m above ground level.
Further, in described step (2), using twist bit pore-forming, boring is proposed simultaneously after reaching requirement depth
Borehole cleaning in time, injects mud while boring, it is necessary to feed enough mud in time during borehole cleaning, and keep slurry face stable,
The effect of mud is that the space in different soil in boring is oozed packing in fact, makes in the hole percolating water reach bottom line, maintains in the hole
To stablize hole wall, for making inter-pile soil uniformly compacted, stake holes presses equilateral triangle arrangement, the centre-to-centre spacing between stake holes to certain hydraulic pressure
From also 2.0-2.5 times for stake holes diameter.
Further, described drill center deviation is less than and bores the 1/4 of footpath design load, and the perpendicularity deviation of stake holes is little
In 1.5%, the deviation of stake holes central point is less than the 5% of pilespacing design load, holes as 6m-12m, and displacement at pile top is not more than
100mm.
Further, in described step (4), concrete cushion clay content is not more than 2%, and sand is medium coarse sand, and clay content is not
More than 3%, the thickness of bed course is 100mm, and strength grade of concrete is not less than c15.
Further, in described step (7), broken concrete, the brickbat meeting intensity requirement is inserted in the layering into sleeve pipe
Block filler, hammers compacting into shape with post, and compacting factor is more than 0.95, waters appropriate cement mortar so as to be filled according to a certain percentage
Building waste filler space, obtains there is the compacted layer of certain thickness building waste filler.
Further, in described step (8), the speed controlling of lifting sleeve pipe is in 0.5m/min-1.0m/min it is ensured that rubble
The degree of compaction of inserts is not it is ensured that change a footpath.
Using the Advantageous Effects that as above technical scheme obtains it is:
Pile making method Construction Vibration based on construction refuse regenerated aggregate stake is little, noise is little, can promote the use of in city.
, up to more than 2000mm, maximum length of pile or depth can exceed for the stake maximum diameter of pile being formed using this pile making method or section
100m, is applicable to all kinds of soil layers, and stake end not only can enter micro- weathered rockses and can base expanding and base expanding.
Resource recycling, energy-saving, environmental protection, shearing resistance can be taken into account based on construction refuse regenerated aggregate stake and resist
Pressure effect good, deformation is little, Stability Analysis of Structures, balance are good, single pile high capacity, durable in use the advantages of.
Brief description
Fig. 1 is pile making method step (1) (2) schematic diagram based on construction refuse regenerated aggregate stake.
Fig. 2 is step (3) schematic diagram.
Fig. 3 is step (4) (5) (6) schematic diagram.
Fig. 4 is step (7) schematic diagram.
Fig. 5 is step (8) schematic diagram.
Fig. 6 is to extract sleeve pipe schematic diagram in step (8).
Fig. 7 is based on construction refuse regenerated aggregate pilework schematic diagram.
Fig. 8 is reinforcement cage structure schematic diagram.
In figure number explanation: 1, twist bit；2nd, casing；3rd, weight (m > 2t)；4th, building waste filler；5th, steel reinforcement cage；
6th, sleeve pipe；7th, concrete reinforcing cage layer；8th, concrete cushion；9th, post hammer；10th, compacted layer；11st, concrete layer；12nd, building waste
Aggregate post.
Specific embodiment
Specific embodiment in conjunction with 1 to 8 couple of present invention of accompanying drawing is described further:
Embodiment 1:
Certain industry park builds area 20000m in advance2Factory building, single-layer lightweight steel construction.Geological conditions is: natural ground with
Lower 15m-18m is mud, bearing eigenvalue of foundation soil fak=42kpa, es=1.46mpa；Supporting course is silt, and ground holds
Load power eigenvalue fak=192kpa, es=10.38mpa. design requirement terrace following bearing eigenvalue of foundation soil fak=
110kpa.
Former scheme is by 44 meters of setting concrete bearing platforms, and the pile for prestressed pipe of 4 a diameter of 580mm divided into by each cushion cap,
The long 28m of stake, cushion cap sets primary-secondary beam and the reinforced concrete floor of 160mm thickness.
Using this programme, based on the pile making method of construction refuse regenerated aggregate stake, formed and be based on construction refuse regenerated aggregate
Stake.The a length of 18m-20m of stake, the full hall of stake holes equilateral triangle lays out pile, a diameter of 800mm of stake, and the centre distance between stake holes is
1.8m.
Stake is made for aggregate with building waste, before pile, first building waste is carried out pretreatment, building waste carries out pre- place
Reason includes classification, pulverizes, sieves, and the particle diameter making building waste, between 35mm-40mm, cleans the building rubbish after break process
The objectionable impurities that rubbish removal is mixed into, mixing becomes the concrete mix meeting country for stake intensity requirement.Concrete mix
Including building waste aggregate, aggregate chips, cement and additive；Building waste aggregate size is between 35mm-40mm, loose thickness
1.39t/m3, impurity content is less than 5%；Aggregate chips particle diameter is between 2.5mm-10mm, loose thickness 1.47t/m3, impurity content is little
In 5%；Cement grade is not less than 32.5 grades, and 0.44 about, every cubic meter of concrete cement consumption is no less than the ratio of mud
The ratio of 350kg, flyash and cement in 1.02-1.65, with the sand of modulus of fineness 2.3-2.5,40% husky rate；Blend a certain amount of
The performance to adjust concrete mix for the additive, the strength grade of concrete pouring must not be less than c20, and the slump controls
150mm-200mm.Further, described additive includes improving the water reducer of concrete mix rheological property, for improving
The waterproofing agent of concrete durability, it is effectively improved the cohesiveness of concrete mix and the air entraining agent of water-retaining property.
The pile making method that building waste is used as regeneration aggregate adopts following steps:
(1) survey fixed pile, bury casing 2 at stake position；
Casing 2 is made up of the thick steel plate of 3mm-5mm, and its internal diameter is more than bit diameter, bigger 20cm-30cm than stake diameter, often
Section 2m, top weldering reinforcement and hanger, open mud mouth, 20cm above ground level, casing is buried using digging buried method, in casing
Heart line cannot be greater than 30mm with the centerline deviation of stake position, and the embedded of casing should be firm closely knit, and casing bottom is buried to level of ground water
Following 30cm, is not less than 1.5m when being embedded in sand, is embedded in clay and is not less than 1m, and between casing and crater wall, application clay divides
Layer compacting, if necessary in the cement mortar that topping laying 20mm is thick, in case leak-stopping water, on casing, setting 2 excessive slurry mouth, is easy to
The mud overflowing flows back to mud pit and recycles, casing 0.4m-0.6m above ground level.
(2) in the ground at stake position, using twist bit 1 pore-forming；
Using twist bit 1 pore-forming, boring is proposed after reaching requirement depth and timely borehole cleaning, injects while boring
Mud, it is necessary in time feed enough mud during borehole cleaning, and keeps slurry face stable, and the effect of mud is will in boring not
Ooze packing in fact with the space in soil layer, make in the hole percolating water reach bottom line, maintain the certain hydraulic pressure of in the hole to stablize hole wall, be
Make inter-pile soil uniformly compacted, stake holes presses equilateral triangle arrangement, the centre distance between stake holes is also the 2.0-2.5 of stake holes diameter
Times.
Described drill center deviation is less than bores the 1/4 of footpath design load, and the perpendicularity deviation of stake holes is not more than 1.5%, stake
The deviation of central point of hole is less than the 5% of pilespacing design load, holes as 6m-12m, and displacement at pile top is not more than 100mm.
(3) fill out suitable building waste filler 4 toward bottom hole, ramming filler with weight 3 makes it compacted toward surrounding soil diffusion, changes
Kind pile bottom force holding layer bearing capacity；
(4) mixing concrete cushion materials, in bottom hole casting concrete bed course 8；
Concrete cushion clay content is not more than 2%, and sand is medium coarse sand, and clay content is not more than 3%, and the thickness of bed course is
100mm, strength grade of concrete is not less than c15.The maximum particle diameter of construction refuse regenerated aggregate is not more than the 2/ of cushion thickness
3.
(5) steel reinforcement cage 5, concrete perfusion vibration compacting molding shape in the hollow cylinder of steel reinforcement cage bottom are transferred in the borehole
Become concrete reinforcing cage layer 7；
, as shown in figure 8, steel reinforcement cage is divided into upper and lower two parts, the little length of upper reinforcement cage diameter is long, lower rebar for steel reinforcement cage
Cage diameter long length is short.
(6) at the heart of upper reinforcement cage hole, one diameter of setting is less than the sleeve pipe 6 of steel reinforcement cage annular diameters；On sleeve pipe 6 wall
Leave dog-house.
(7) into sleeve pipe, the building waste meeting intensity requirement is inserted in layering, with post hammer 9 compacting, forms compacted layer 10；
Into sleeve pipe, broken concrete, the queen closer filler meeting intensity requirement is inserted in layering, hammers compacting, compacting system into shape with post
Number is more than 0.95, waters appropriate cement mortar so as to be filled in building waste filler space according to a certain percentage, obtains thering is one
Determine the compacted layer of building waste filler of thickness.Wherein, post hammer quality is more than 2 tons.
(8) pour concrete with this compacted layer equal thickness toward in the steel reinforcement cage wrapping up this compacted layer, vibration compacting molding,
It is then lifted out sleeve pipe to certain altitude, repeat step (7), be so repeated, until depth of packing reaches designed elevation, finally
Casting concrete mix thickness is higher than designed elevation 0.5m, extracts sleeve pipe, proposes casing, is formed based on building waste again
Raw aggregate stake.
Center based on construction refuse regenerated aggregate stake is building waste aggregate post 12, the bottom of building waste aggregate post 12
For concrete reinforcing cage layer 7, the bottom of concrete reinforcing cage layer is concrete cushion 8, has building waste to fill out under concrete cushion
Material 4.The top of building waste aggregate post 12 is attached to be stamped concrete layer, building waste aggregate post 12 one around have steel reinforcement cage 5, steel
Muscle cage is integrated with concrete layer solidification, and wherein steel reinforcement cage top is higher than building waste aggregate post 12.Regeneration aggregate stake is passed through mixed
Closely solidification is integrated for soil and steel reinforcement cage.
When perfusion is close to the influx height of design requirement, carry out detailed measurements, breast is arranged at the concrete top due to perfusion
Slurry, intensity decreases, many perfusion 50cm in design basis, after concrete setting, serum chisel is gone, strong to ensure pile body
Degree meets design requirement.In addition, during winter construction concrete mix enter hole temperature must not be less than 5 DEG C, guarantor will be taken to pile crown
Warm measure.The speed controlling of lifting sleeve pipe is in 0.5m/min-1.0m/min it is ensured that the degree of compaction of rubble inserts is not it is ensured that change
Become stake footpath.
Result reaches fak=140kpa, meets design requirement through detection display, characteristic value of foundation bearing capacity.In addition,
Working procedure compare simple, total construction costs than former scheme save 34%.
Embodiment 2:
Somewhere builds 76 meters of an overall length of bridge, the basis of 8 piers in advance, and original design is mechanical type piling.Use we instead
Case, based on the pile making method of construction refuse regenerated aggregate stake, forms and is based on construction refuse regenerated aggregate stake.
The pretreatment of building waste is with embodiment 1.
Building waste is used as the pile making method step of regeneration aggregate with embodiment 1.
After construction terminates, successively bore 10 test piles, wherein have 6 to make loading test it was demonstrated that the bearing capacity of stake, mixed
Solidifying soil intensity, actual stake footpath all meet design standard.
After the screw pouring piles of the program, cost reduces by 26%, after using the screw pouring piles of the program instead, and cost drops
Low by 26%, substructure cost reaches 46% than the reduction of initial open caisson scheme.Based on construction refuse regenerated aggregate stake on the coast, river
Can use in beach, water.
By the analysis of embodiment, detect that the indexs such as concrete strength, grouting effect and faying face quality show, adopt
The intensity requirement close using the real concrete of equivalent can be reached with the bearing capacity of building after the stake of the program, this stake has
Shearing resistance, resistance to compression effect are good, deform the advantages of little, Stability Analysis of Structures, balance are good, single pile bearing capacity is big and durable in use, and,
The expense saving equivalent reality concrete mix just compared by every cube of building waste filler, improves building waste utilization rate, warp
Ji remarkable benefit.
The present invention solves the problems, such as that most of building waste can not be fully utilized, and develops one and makes full use of building
The new way of rubbish, the making of construction refuse regenerated aggregate stake adopts waste and old concrete rubble therein and flyash etc. former in a large number
Material, decreases exploitation to sandstone raw material and the consumption of concrete, and brickbat, broken concrete etc. have higher intensity and resistance to
Property, is wrapped in concrete, is not subject to ectocine, will not produce air slaking and become loose body, can muchly play aggregate long
Effect, in addition, brickbat, broken concrete etc. cheap (only need to pay fraction of processing charges and traffic expense), is especially removing
It is possible to gather materials on the spot, waste directly utilizes, and improves building waste added value, energy-saving, meets today's society energy-conservation on ground
The theory reducing discharging.This pile bearing capacity height, strong adaptability, Stability Analysis of Structures, balance is good, deformation is little, folk prescription concrete provide
High capacity, favorable working performance, can guarantee that the bulk strength of reinforced concrete pile, can deliver load to deep soil to obtain
Obtain larger bearing capacity, reduce the settling amount of works, can be widely applied for road and bridge, harbour, water power and skyscraper etc. and build
Build in engineering it is achieved that its economic benefit and productive value.
Certainly, only presently preferred embodiments of the present invention described above, the present invention is not limited to enumerate above-described embodiment, should
When explanation, any those of ordinary skill in the art are under the guidance of this specification, all equivalent substitutes of being made, bright
Aobvious variant, all falls within the essential scope of this specification, ought to be protected by the present invention.
Claims (8)
1. a kind of pile making method based on construction refuse regenerated aggregate stake is it is characterised in that make stake with building waste for aggregate,
First building waste is carried out pretreatment before pile, the pile making method that building waste is used as regeneration aggregate adopts following steps:
(1) survey fixed pile, bury casing at stake position；
(2) in the ground at stake position, using twist bit pore-forming；
(3) fill out suitable building waste filler toward bottom hole, so that it is spread toward surrounding soil with heavy tamping filler compacted, improve stake bottom
Supporting course bearing capacity；
(4) mixing concrete cushion materials, in bottom hole casting concrete bed course；
(5) steel reinforcement cage, concrete perfusion vibration compacting molding in the hollow cylinder of steel reinforcement cage bottom are transferred in the borehole；
(6) at the heart of upper reinforcement cage hole, one diameter of setting is less than the sleeve pipe of steel reinforcement cage annular diameters；
(7) into sleeve pipe, the building waste meeting intensity requirement is inserted in layering, hammers compacting into shape with post, forms compacted layer；
(8) pour concrete with this compacted layer equal thickness toward in the steel reinforcement cage wrapping up this compacted layer, vibration compacting molding, then
Lifting sleeve pipe, to certain altitude, repeat step (7), is so repeated, until depth of packing reaches designed elevation, finally pours
Concrete mix thickness is higher than designed elevation 0.5m, extracts sleeve pipe, proposes casing, is formed and is based on construction refuse regenerated aggregate
Stake；
Described building waste carry out pretreatment include classification, pulverize, screening, the particle diameter making building waste between 35mm-40mm,
The objectionable impurities that building waste removal after break process for the cleaning is mixed into, mixing becomes to meet country mixed for stake intensity requirement
Solidifying soil mix；
Described concrete mix includes building waste aggregate, aggregate chips, cement and additive；Described building waste aggregate size
Between 35mm-40mm, loose thickness 1.39t/m3, impurity content is less than 5%；Described aggregate chips particle diameter 2.5mm-10mm it
Between, loose thickness 1.47t/m3, impurity content is less than 5%；Described cement grade is not less than 32.5 grades, and the ratio of mud is 0.44, often
Cubic meter of concrete cement consumption is no less than 350kg, and the ratio of flyash and cement, in 1.02-1.65, uses modulus of fineness 2.3-2.5
Sand, 40% husky rate；Blend a certain amount of additive to adjust the performance of concrete mix, concrete strength pouring etc.
Level must not be less than c20, and the slump controls in 150mm-200mm.
2. a kind of pile making method based on construction refuse regenerated aggregate stake according to claim 1 is it is characterised in that described
Additive includes improving the water reducer of concrete mix rheological property, the waterproofing agent, effectively for improving concrete durability
Improve the cohesiveness of concrete mix and the air entraining agent of water-retaining property.
3. a kind of pile making method based on construction refuse regenerated aggregate stake according to claim 1 is it is characterised in that described
Casing in step (1) is made up of the thick steel plate of 3mm-5mm, and its internal diameter is more than bit diameter, bigger 20cm-30cm than stake diameter,
Often save 2m, top weldering reinforcement and hanger, open mud mouth, 20cm above ground level, casing is buried using digging buried method, casing
Centrage cannot be greater than 30mm with the centerline deviation of stake position, and the embedded of casing should be firm closely knit, and casing bottom is buried to subsoil water
The following 30cm in position, is not less than 1.5m when being embedded in sand, is embedded in clay and is not less than 1m, applies clay between casing and crater wall
Compaction in layers, in the cement mortar that topping laying 20mm is thick, in case leak-stopping water, setting 2 on casing is overflow and is starched mouth, is easy to overflow
Mud flow back to mud pit and recycle, casing should 0.4m-0.6m above ground level.
4. a kind of pile making method based on construction refuse regenerated aggregate stake according to claim 1 is it is characterised in that described
In step (2), using twist bit pore-forming, boring is proposed after reaching requirement depth and timely borehole cleaning, notes while boring
Enter mud, it is necessary to feed enough mud in time during borehole cleaning, and keep slurry face stable, the effect of mud is by boring
Packing is oozed in fact in space in different soil, makes in the hole percolating water reach bottom line, maintains the certain hydraulic pressure of in the hole to stablize hole wall,
For making inter-pile soil uniformly compacted, stake holes presses equilateral triangle arrangement, and the centre distance between stake holes is the 2.0-2.5 of stake holes diameter
Times.
5. a kind of pile making method based on construction refuse regenerated aggregate stake according to claim 4 is it is characterised in that described
Drill center deviation is less than bores the 1/4 of footpath design load, and the perpendicularity deviation of stake holes is not more than 1.5%, stake holes central point inclined
Difference, less than the 5% of pilespacing design load, is holed as 6m-12m, and displacement at pile top is not more than 100mm.
6. a kind of pile making method based on construction refuse regenerated aggregate stake according to claim 1 is it is characterised in that described
In step (4), concrete cushion clay content is not more than 2%, and sand is medium coarse sand, and clay content is not more than 3%, and the thickness of bed course is
100mm, strength grade of concrete is not less than c15.
7. a kind of pile making method based on construction refuse regenerated aggregate stake according to claim 1 is it is characterised in that described
In step (7), broken concrete, the queen closer filler meeting intensity requirement is inserted in the layering into sleeve pipe, hammers compacting, compacting into shape with post
Coefficient is more than 0.95, waters appropriate cement mortar so as to be filled in building waste filler space according to a certain percentage, is had
The compacted layer of certain thickness building waste filler.
8. a kind of pile making method based on construction refuse regenerated aggregate stake according to claim 1 is it is characterised in that described
In step (8), the speed controlling of lifting sleeve pipe is in 0.5m/min-1.0m/min it is ensured that the degree of compaction of rubble inserts is not it is ensured that
Change stake footpath.
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| CN107376424B (en) * | 2017-06-09 | 2021-10-26 | 石家庄新奥环保科技有限公司 | Activated carbon filling device and method |
| CN107740407B (en) * | 2017-09-26 | 2019-05-14 | 东莞嘉誉诚建设基础工程有限公司 | Pile foundation forming method |
| CN110374089B (en) * | 2019-07-24 | 2021-01-05 | 安徽金江建筑规划设计有限公司 | Composite construction method of cast-in-place pile |
| CN111070403B (en) * | 2019-12-11 | 2021-06-01 | 山东大学 | Manufacturing method of construction solid waste extrusion pile |
| CN113338260A (en) * | 2021-06-18 | 2021-09-03 | 青海省交通控股集团有限公司 | Construction waste recycled aggregate dry-mixed cement gravel pile and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2280116Y (en) * | 1997-01-31 | 1998-04-29 | 王继忠 | Heavey hammer tamping bottom of immersed tube method for building bored concrete pipe of refuse heap |
| CN1191257A (en) * | 1998-03-20 | 1998-08-26 | 王继忠 | Method for construction of concrete pile |
| CN2296364Y (en) * | 1997-06-11 | 1998-11-04 | 王继忠 | Sinking sleeve ramming and enlarging super long pile |
| RO126678A2 (en) * | 2010-03-19 | 2011-09-30 | Ioan Beldean | Concrete pillars reinforced with six pvc tubes, assembled with star-type spacers, resulting from thermopane waste recycling and processing |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06136745A (en) * | 1992-04-28 | 1994-05-17 | J D F:Kk | Construction method for hollow widened bottom cast-in-place concrete pile |
-
2015
- 2015-03-20 CN CN201510122938.5A patent/CN104762956B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2280116Y (en) * | 1997-01-31 | 1998-04-29 | 王继忠 | Heavey hammer tamping bottom of immersed tube method for building bored concrete pipe of refuse heap |
| CN2296364Y (en) * | 1997-06-11 | 1998-11-04 | 王继忠 | Sinking sleeve ramming and enlarging super long pile |
| CN1191257A (en) * | 1998-03-20 | 1998-08-26 | 王继忠 | Method for construction of concrete pile |
| RO126678A2 (en) * | 2010-03-19 | 2011-09-30 | Ioan Beldean | Concrete pillars reinforced with six pvc tubes, assembled with star-type spacers, resulting from thermopane waste recycling and processing |
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