CN102359105B - Construction equipment for energy-saving pressure scattered cement soil anti-floating pile - Google Patents
Construction equipment for energy-saving pressure scattered cement soil anti-floating pile Download PDFInfo
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Abstract
The invention provides construction equipment for an energy-saving pressure scattered cement soil anti-floating pile. The construction equipment comprises a frame, the frame is provided with a rotatable drill rod, the lower end of the drill rod is provided with a drill bit, the drill bit is provided with a stirring blade, the lower end of the drill rod is provided with a guniting port, the frame is also provided with a guide rod for inserting an anti-pulling rib into the pile, and a winch for hoisting the anti-floating pile is arranged at the top of the guide rod. The anti-floating pile constructed by adopting the equipment has the advantages of high floating resistance, no pile joint, easily controlled quality, improved construction efficiency and long durability. The purposes of discharging no mud, saving a large amount of steel, shortening the construction period and reducing the engineering cost can be fulfilled.
Description
Technical field
The present invention relates to technical field of civil engineering, particularly foundation and underground structure anti-floating pile construction equipment.
Background technology
Along with the high speed development of urban construction, traffic engineering, the development and utilization development of the underground space has become trend.Thereupon, the buoyancy being produced by underground water is particularly outstanding on the impact of underground structure, and when underground structure buried depth is larger, the buoyancy being produced by underground water is higher.Groundwater pressure is mainly manifested in the effect of underground structure: basement bottom board protuberance, and basement leaking is until coal seam floor failure; The inhomogeneous of underground structure entirety floated, and can cause the inclination of beam-column node place cracking, bottom slab crack and building etc.In order to meet the needs of this basic stress balance, the general form such as anti-floating pile technology or increase building counterweight that adopts solves at present, the use of anti-floating pile wherein in underground structrue engineering is more general, and anti-floating pile, as the one in pile foundation, is more and more paid attention to by engineering circles at present.The anti-floating power producing by anti-floating pile is offset the buoyancy of structure generation under Groundwater.Anti-floating pile, through the development of decades, has emerged multiple anti-floating pile body structure form, from uniform section bored pile to prestressing force anti-floating pile with reducing anti-floating pile etc.
The requirement of anti-floating pile is mainly concentrated on to following 2 points:
(1) how to improve the anti-floating power of anti-floating pile and reduce construction costs?
Does (2) how the endurance issues of anti-floating pile body solve?
Traditional reinforced concrete pile (comprising bored pile and preformed pile (square pile and pile tube)), be pressure bearing pile type, compressive strength is high, can play good resistance to compression effect, but reinforced concrete pile when anti-floating pile uses, is exposed to many weak points of reinforced concrete pile.First, concrete tensile strength is more much lower than its compressive strength, and tensile strength is only 1/18 to 1/9 of compressive strength.Pile concrete can produce crack under stretching action, and along with the progressively expansion in crack, concrete is deactivated, and all pulling force is mainly born by reinforcing bar.Because anti-floating pile is in underground, concrete cracking will inevitably cause that reinforcing bar is subject to the erosion of water and chemical hazardous substances, thereby has affected the durability of anti-floating pile; If control the width in crack, need significantly to improve its reinforcement ratio, must cause the significantly raising of construction costs; They are two years old, the anti-floating power of anti-floating pile is to provide by pile body and the frictional force of the stake side soil body, although reinforced concrete pile pile body has higher-strength, but pile side friction is not because the raising of pile strength improves, especially in soft clay area, the pile side friction of deposited reinforced concrete pile is owing to existing slurry coat method lower.That is to say, steel concrete pile body intensity can not be given full play to, and has caused strength of materials waste, and construction costs is improved.
For pile for prestressed pipe and square pile, although construction costs is lower, exit gradually the application of anti-floating pile owing to distress in concrete can being produced in the endurance issues of presstressed reinforcing steel and work progress.
For soil anchor or anchor cable, have advantages of that construction costs is low, but because the crack of grouting body is unreliable to the durability protection of resistance to plucking muscle body, also have the imperfection of construction technology, cause being difficult in anti-floating pile field promoting.
Based on the current conventional existing problem of anti-floating pile, engineering circles is badly in need of researching and developing a kind of novel anti-floating pile, and enough anti-floating power can be provided, can solve again pile body durability and application life problem.
Solve the endurance issues of resistance to plucking muscle body (reinforcing bar or steel strand), must find out their the corrosion situation in working environment.For this reason, we have retrieved " the-そ Let Meter と constructions of Steel pipe Hangzhoupro " book that NKK stake association publishes, from this book, list the corrosion condition survey result in soil to steel pipe pile in a large number, the he result of investigation that the data of quoting come from Japan builds province building research institute below:
Respondent is the steel pipe pile of good fortune paddy bridge, and concrete condition is as follows:
Steel pipe pile external diameter 486mm, wall thickness 16mm, 9mm.
10～November in 1958, construction was extracted after 17 years, carried out corrosion investigation, and investigation result is as shown in table 1.As seen from the table:
(1) in atmosphere, the corrosion of film broken parts is remarkable; Part corrosion in topsoil; In fine sand layer, except comprehensive corrosion, there is local corrosion, more to local corrosion in mud burning into sand layer; Almost there is no below corrosion from clay folder mud;
(2) in soil, corrosion rate overall average is 0.007mm/;
(3) position, corrosion rate top layer is obviously greater than deep layer position; The top layer that coexists, mud burning into sand is greater than fine sand;
(4) on average 0.024mm/ only of the maximum position of corrosion rate, the wall thickness of 2mm can corrosion resistant 80 years.
Japan's soil property engineering can the corrosion situation in soil layer also be investigated steel, and the piling bar under various soil conditions is carried out to corrosion test, from 1962 to 1966, is provided with 126 piling bars in 10 places of Japan, and the section of stake is L-type, and stake is about 15m.Then respectively the Second Year after setting, within the 5th year, the 10th year, respectively extract 42, carry out corrosion situation and observe and the mensuration of thickness of slab reduction, its investigation result is as shown in table 2.
Can make as judged from the investigation result of table 2:
(1), except matrix section closely, almost maintain the original state through the stake surface of 10 years;
(2) various places 10 years overall average corrosion rate (two sides) is 0.0106mm/, and one side is 0.0053mm/, and maximum value is 0.0297mm/;
(3) corrosion rate reduces with year number increase;
(4) recommending design corrosion rate is 0.02mm/.
The steel pipe pile corrosion result of table 1 diverse location
Steel pipe pile corrosion result in the Different Strata of table 2 different regions
In the various decrees in Japanese architecture, building, bay, the field such as transform mountains, harness the river, instruction, standard, corrosion quantitative limitation and anti-corrosion method are had to concrete regulation, for building, in brief:
(1) carry out corrosion test, adopt a year corrosion rate to be multiplied by 80 years or durable years;
(2) do not test, directly adopt the corrosion amount deposit of 2mm can meet life requirement.
Based on above he result of investigation, if consider the corrosion storage level of 3mm for the protection tube of the resistance to plucking muscle body of anti-floating pile, can meet and use above life requirement in 100 years.
Summary of the invention
Technical problem to be solved by this invention is, overcome technical problem and fault of construction that existing uplift pile exists, a kind of construction equipment of energy-saving pressure scattered cement soil anti-floating pile is provided, the anti-floating pile of being made by this equipment has larger diameter, larger with the contact surface of the soil body, can obtain higher frictional resistance; Steel protection tube is enclosed within resistance to plucking muscle body in certain thick steel pipe, and protective action is provided, and ensures that reinforcing body can not produce corrosion in the time limit of designing requirement, has improved in its durability, stake and has had joint, construction quality easily to control.The invention anti-floating pile body construction technique advanced person of institute, anti-floating pile body are not affected by or not crack, can significantly reduce construction costs.
In order to solve the existing problem of current uplift pile, technical scheme of the present invention is such:
A kind of construction equipment of energy-saving pressure scattered cement soil anti-floating pile; comprise a frame; in frame, be provided with drilling rod; drilling rod upper end is provided with the unit head that drives drilling rod rotation; drilling rod lower end is with drill bit; drilling rod lower end is provided with gunniting hole, is also provided with the guide peg for resistance to plucking muscle body being brought in drilling rod sinking process into pile body inside in frame, is provided with for hanging fixing resistance to plucking muscle body the detachable linkage that discharges resistance to plucking muscle body in frame; Guide peg is provided with air jet pipe.
Described resistance to plucking muscle body cover has anticorrosion metal tube, and the lower end of resistance to plucking muscle body is connected with the major part anchor dish that increases uplift resistance.
Described linkage is to be arranged in frame for lifting by crane the hoist engine of resistance to plucking muscle body.
The support of described hoist engine is relative with the support of unit head to be fixedly connected with.
On drill bit with stirring vane.
Described stirring vane is folding stirring vane.
Or stirring vane is the detachable blade of changing.
On guide peg, be provided with air jet pipe.
In the lower end of guide peg with a resistance to plucking muscle body fastening devices.
Be provided with in resistance to plucking muscle body upper end and be connected with hoist engine and separable linkage.
Described hoist engine is with a branch sleeve, and described resistance to plucking muscle body inserts in branch sleeve, and has horizontal fastening spiral to be tightened.
On guide peg, be provided with the detector that detects pile body verticality.
Be provided with injected hole on drilling rod top, on injected hole, be provided with flow detector.
Between drilling rod and guide peg, have a gap, gap is more than 3mm.
The top of described anticorrosion metal tube is provided with the device for slip casting in pipe.
This construction equipment is reasonable in design, constructs ingenious, the resistance to plucking muscle body with sleeve pipe can be inserted in cement mixing method, and speed of application is fast, reliable in quality.
The anti-floating pile forming and existing all kinds of anti-floating piles are more as shown in table 3.Through relatively finding out, anti-floating pile of the present invention not only has higher anti-floating power but also has longer durability.Can reach the object that reduces rolled steel dosage, reduction of erection time, reduction construction costs simultaneously.
The comparison of table 3 anti-floating pile of the present invention and existing all kinds of anti-floating piles
Brief description of the drawings
Describe the present invention in detail below in conjunction with the drawings and specific embodiments;
Fig. 1 is a kind of Novel energy-saving anti-floating pile structural representation of the present invention.
Fig. 2 is the structural representation of pile top in a kind of Novel energy-saving anti-floating pile structure of the present invention.
Fig. 3 is the structural representation that in a kind of Novel energy-saving anti-floating pile structure of the present invention, resistance to plucking muscle is connected with base plate.
Fig. 4 is anti-floating pile construction equipment structural representation of the present invention.
Fig. 4 a is anti-floating pile construction equipment other direction structural representation of the present invention.
Fig. 5 is drilling rod of the present invention, guide peg, resistance to plucking muscle arrangement schematic diagram.
Fig. 6 is blade arrangement structural representation of the present invention.
Detailed description of the invention
For technological means, creation characteristic that the present invention is realized, reach object and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
Referring to Fig. 1, the pile body structure of this novel anti-floating pile is, comprise a cement soil pile 3, in pile body, being provided with resistance to plucking muscle body 4 links together with pile top 1, anchor ingot plate 2 and protecting tube 5, resistance to plucking muscle body 4 is connected with structure base slab 6, the anti-floating power that anti-floating pile is provided is delivered on structure base slab, realizes the anti-floating of underground structure.
Referring to Fig. 2, this novel anti-floating pile body structure is, comprises a jet mixing pile body or the pile body 3 being formed by cementation, buries resistance to plucking muscle body 4 in pile body 3 underground, resistance to plucking muscle body 4 is connected with multiple anchor ingot plates 2 with a pile top 1, and resistance to plucking muscle body 4 is enclosed within a protection steel pipe 5.
Increase after protection steel pipe 5, steel pipe 5 forms a shielding construction, while there is corrosion, and preferential corrosion protection steel pipe 5, protection steel pipe 5 thickness, are determined by engineering actual conditions, as age of project, bad border of corrosion etc.Effectively protect inner resistance to plucking muscle body 4 not to be corroded.
Referring to Fig. 3, resistance to plucking muscle body 4 in this novel anti-floating pile body extend in structure base slab 6 with protecting tube 5, use ground tackle 7 and backing plate 10, realize the sealing of protecting tube 5 in structure base slab 6 and the pre-stretch-draw of resistance to plucking muscle body 4, and the resistance to plucking muscle body 4 that adds outside ground tackle 7 is connected with the reinforcing bar 9 use special mould clamps 8 in structure base slab.
Form after this pile body 3, by resistance to plucking muscle body 4 and anchor ingot plate 2, protecting tube 5, adopt specialist tools, be sent in pile body and go along the center of this pile body, after inserting and putting in place, and again to rotary jet grouting in pile body.
Resistance to plucking muscle body 4 is one or more steel strand, reinforcing bar, wire rope etc.
Anchor ingot plate 2 is to be processed from strand by High-strength plate, is hollow disc shape or hollow polygon.
Anti-floating pile structure in the present embodiment, substep has applied, and both can in comparatively hard soil layer, form, and also can form in as mucky soil, quicksand and slity soil at weak soil layer, and this anti-floating pile can obtain higher anti-floating power after maintenance certain hour.
Referring to Fig. 4 and Fig. 4 a, a kind of construction equipment of energy-saving pressure scattered cement soil anti-floating pile, comprise a frame 11, in frame 11, be provided with drilling rod 12, drilling rod 12 upper ends are provided with the unit head that drives drilling rod rotation, drilling rod 12 lower ends are with drill bit 13, drilling rod 12 lower ends are provided with gunniting hole, in frame, be also provided with the guide peg 15 for resistance to plucking muscle body being brought in drilling rod sinking process into pile body inside, in frame, be provided with for hanging fixing resistance to plucking muscle body the detachable linkage that discharges resistance to plucking muscle body.
Described resistance to plucking muscle body cover has anticorrosion metal tube, and the lower end of resistance to plucking muscle body is connected with the major part anchor dish that increases uplift resistance.
Described linkage is to be arranged in frame for lifting by crane the hoist engine 16 of resistance to plucking muscle body.It should be noted that hoist engine and unit head need synchronization lifting.Referring to Fig. 5, hoist engine 16 is fixedly installed on unit head frame lower, with the first lifting of power, arrangement is that limit, left side is drilling rod 12, and centre is guide peg 15, and what right edge was sling is resistance to plucking muscle body 4, the arrangement that certainly can carry out as required other, does not enumerate at this.
The support of described hoist engine 16 is relative with the support of unit head to be fixedly connected with.
On drill bit 13 with stirring vane 14.Described stirring vane is that folding stirring vane or stirring vane are the detachable big or small blade of changing.Referring to Fig. 6, what blade 14 can be symmetrical is arranged on drill bit, also can carry out asymmetric interval and arrange (not shown).
Guide peg 15 is provided with air jet pipe.
The lower end of guide peg is with a resistance to plucking muscle body fastening devices 151.
Resistance to plucking muscle body upper end is provided with and is connected with hoist engine and separable linkage.
Described hoist engine 16 is with a branch sleeve 161, and described resistance to plucking muscle body inserts in branch sleeve, and has horizontal fastening spiral to be tightened.
On guide peg, be provided with the detector that detects pile body verticality.
Drilling rod 12 tops are provided with injected hole, are provided with flow detector on injected hole.
More than the spacing 3mm between drilling rod 12 and guide peg 15.
The top of described anticorrosion metal tube is provided with the device for slip casting in pipe.
Its construction method is as follows:
A) first drilling rod sinks to creeping into, and forms cement soil pile, extracts drilling rod;
B), in follow-up drilling rod sinking drilling process, in cement soil pile, insert with the resistance to plucking muscle of anticorrosion metal tube to assigned address;
C) finally extract drilling rod, the resistance to plucking muscle with anticorrosion metal tube is stayed in cement soil pile.
Further, in a) step drilling rod sinking drilling process, while creeping into, whitewashing, can certainly not whitewash.
Further, in a) step, in drilling rod withdrawal process, whitewash simultaneously, can certainly not whitewash.
Further, in a) step, form after cement soil pile, drilling rod is extracted, resistance to plucking muscle with anticorrosion metal tube is connected on hoist engine and is lifted by crane simultaneously, when Kelly Stubb is sling completely to resistance to plucking muscle body, then by relative with guide peg fixing the resistance to plucking muscle body with anticorrosion metal tube, then carry out b) step.
When fixing resistance to plucking muscle, the fastening devices of guide peg lower end is stuck on resistance to plucking muscle, while making to sink to creeping into, guide peg enters in pile body together with resistance to plucking muscle, and when guide peg is extracted, fastening devices can be thrown off from resistance to plucking muscle body.
Carrying out b), before step, adjusting the blade dimensions on drilling rod, blade stirring scope is reduced, then mobile drilling rod make resistance to plucking muscle body aim at pile body center, sink to creeping into.To after the translation of resistance to plucking muscle body, can solve the eccentricity issues that resistance to plucking muscle is put forward, adjust blade and make to stir diameter and reduce the soil body outside not disturbance pile body, in order to avoid affect quality.
Carrying out b) in step process, rotary jet grouting is carried out in drilling rod reversion simultaneously.Repeatedly whitewashing, makes not produce space in pile body, and pile quality is reliable.
Described b) step, after resistance to plucking muscle insertion pile body is completed, separates resistance to plucking muscle body, then carries out c) step with hoist engine, drilling rod is exited.Separately, resistance to plucking muscle body will be stayed in pile body.
In c) step, when drilling rod is extracted, continue whitewashing, drilling rod stops operating simultaneously.
On the wall of anticorrosion metal tube, carry out perforate, opening diameter is 2-15mm, perforate be spaced apart 0.5-10m.Carry out perforate and can prevent in joint bar process, produce vacuum in anticorrosion metal tube, be difficult for inserting, gas or the cement paste anticorrosion metal tube of can freely coming in and going out after perforate, can not produce and in pipe, vacuumize phenomenon.
Guide peg carries out jet when sinking or extracting.Carry out jet can promoting flowing of cement paste, make it more even.
In sinking drilling process, by verticality detector detection drilling rod and guide peg verticality, if exceed the inclination of error range, be adjusted in the error range of permission.Have according to different reason adjustment modes: extract again and creep into, adjust frame level etc., have obstruction as underground, remove, to guarantee vertically lower boring of drilling rod.
The construction method of another this anti-floating pile is as follows in addition:
A) first resistance to plucking muscle body is sling and is fixedly connected with guide peg, then drilling rod sinks to creeping into, and forms cement soil pile;
B) in forming cement earth pile, the resistance to plucking muscle with anticorrosion metal tube is stayed and brought in cement soil pile;
C) finally extract drilling rod, the resistance to plucking muscle with anticorrosion metal tube is stayed in cement soil pile.
Said method, a) step drilling rod sink to creeping into or b) step extract in the process of drilling rod, whitewashing simultaneously.
More than show and described general principle of the present invention, principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and manual, describes just illustrates principle of the present invention; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (14)
1. the construction equipment of an energy-saving pressure scattered cement soil anti-floating pile, it is characterized in that, comprise a frame, in frame, be provided with drilling rod, drilling rod upper end is provided with the unit head that drives drilling rod rotation, and drilling rod lower end is with drill bit, and drilling rod lower end is provided with gunniting hole, in frame, be also provided with the guide peg for resistance to plucking muscle body being brought in drilling rod sinking process into pile body inside, in frame, be provided with for hanging fixing resistance to plucking muscle body the detachable linkage that discharges resistance to plucking muscle body; Guide peg is provided with air jet pipe.
2. the construction equipment of a kind of energy-saving pressure scattered cement soil anti-floating pile according to claim 1, is characterized in that, described resistance to plucking muscle body cover has anticorrosion metal tube, and the lower end of resistance to plucking muscle body is connected with the major part anchor dish that increases uplift resistance.
3. the construction equipment of a kind of energy-saving pressure scattered cement soil anti-floating pile according to claim 1, is characterized in that, described linkage is to be arranged in frame for lifting by crane the hoist engine of resistance to plucking muscle body.
4. the construction equipment of a kind of energy-saving pressure scattered cement soil anti-floating pile according to claim 3, is characterized in that, the support of described hoist engine is relative with the support of unit head to be fixedly connected with.
5. the construction equipment of a kind of energy-saving pressure scattered cement soil anti-floating pile according to claim 1, is characterized in that, on drill bit with stirring vane.
6. the construction equipment of a kind of energy-saving pressure scattered cement soil anti-floating pile according to claim 5, is characterized in that, described stirring vane is folding stirring vane.
7. the construction equipment of a kind of energy-saving pressure scattered cement soil anti-floating pile according to claim 5, is characterized in that, stirring vane is the detachable blade of changing.
8. the construction equipment of a kind of energy-saving pressure scattered cement soil anti-floating pile according to claim 1, is characterized in that, the lower end of guide peg is with a resistance to plucking muscle body fastening devices.
9. the construction equipment of a kind of energy-saving pressure scattered cement soil anti-floating pile according to claim 3, is characterized in that, resistance to plucking muscle body upper end is provided with and is connected with hoist engine and separable linkage.
10. the construction equipment of a kind of energy-saving pressure scattered cement soil anti-floating pile according to claim 3, is characterized in that, described hoist engine is with a branch sleeve, and described resistance to plucking muscle body inserts in branch sleeve, and has horizontal fastening spiral to be tightened.
The construction equipment of 11. a kind of energy-saving pressure scattered cement soil anti-floating piles according to claim 3, is characterized in that, is provided with the detector that detects pile body verticality on guide peg.
The construction equipment of 12. a kind of energy-saving pressure scattered cement soil anti-floating piles according to claim 3, is characterized in that, drilling rod top is provided with injected hole, is provided with flow detector on injected hole.
The construction equipment of 13. a kind of energy-saving pressure scattered cement soil anti-floating piles according to claim 3, is characterized in that, between drilling rod and guide peg, has gap.
The construction equipment of 14. a kind of energy-saving pressure scattered cement soil anti-floating piles according to claim 2, is characterized in that, the top of described anticorrosion metal tube is provided with the device for slip casting in pipe.
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| CN104831717A (en) * | 2015-06-05 | 2015-08-12 | 刘玉秋 | Trapezoidal mixed soil pile machine |
| CN110307657A (en) * | 2019-07-10 | 2019-10-08 | 台州长天能源技术有限公司 | Soil stores up cold-heating system heat preserving method facility |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2001193060A (en) * | 2000-01-12 | 2001-07-17 | Hitachi Constr Mach Co Ltd | Soil cement pile forming machine |
| CN201050063Y (en) * | 2007-04-12 | 2008-04-23 | 武汉市天宝工程机械有限责任公司 | Multifunctional pile machine |
| CN101603310A (en) * | 2009-07-03 | 2009-12-16 | 广东永基建筑基础有限公司 | Stirring pile-grafting machine |
| CN202280053U (en) * | 2011-10-31 | 2012-06-20 | 上海强劲地基工程股份有限公司 | Construction equipment of energy-saving pressure distributive cemented soil anti-floating pile |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001193060A (en) * | 2000-01-12 | 2001-07-17 | Hitachi Constr Mach Co Ltd | Soil cement pile forming machine |
| CN201050063Y (en) * | 2007-04-12 | 2008-04-23 | 武汉市天宝工程机械有限责任公司 | Multifunctional pile machine |
| CN101603310A (en) * | 2009-07-03 | 2009-12-16 | 广东永基建筑基础有限公司 | Stirring pile-grafting machine |
| CN202280053U (en) * | 2011-10-31 | 2012-06-20 | 上海强劲地基工程股份有限公司 | Construction equipment of energy-saving pressure distributive cemented soil anti-floating pile |
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