CN103388333A - Construction process for carrying out construction on interlocking pile by adopting rotary drilling rig and mud protection wall method - Google Patents

Construction process for carrying out construction on interlocking pile by adopting rotary drilling rig and mud protection wall method Download PDF

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Publication number
CN103388333A
CN103388333A CN2013103173629A CN201310317362A CN103388333A CN 103388333 A CN103388333 A CN 103388333A CN 2013103173629 A CN2013103173629 A CN 2013103173629A CN 201310317362 A CN201310317362 A CN 201310317362A CN 103388333 A CN103388333 A CN 103388333A
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China
Prior art keywords
construction
pile
concrete
drilling rig
mud
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CN2013103173629A
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Chinese (zh)
Inventor
杨公正
白枝奉
唐文周
潘庆华
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China Railway 16th Bureau Group Co Ltd
Beijing Rail Transit Engineering Construction Co Ltd of China Railway 16th Bureau Group Co Ltd
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China Railway 16th Bureau Group Co Ltd
Beijing Rail Transit Engineering Construction Co Ltd of China Railway 16th Bureau Group Co Ltd
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Priority to CN2013103173629A priority Critical patent/CN103388333A/en
Publication of CN103388333A publication Critical patent/CN103388333A/en
Pending legal-status Critical Current

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Abstract

The invention relates to the technical field of bracing and construction of a foundation pit, in particular to the technical field of construction of an interlocking pile and particularly relates to a construction process for carrying out construction on the interlocking pile by adopting a rotary drilling rig and a mud protection wall method. According to the invention, the rotary drilling rig is adopted to operate the interlocking pile and the mud protection wall method is adopted, so that installation of a whole sleeve is omitted; and a plain concrete pile adopts common concrete to replace extra retarded set concrete, so that construction stagnation caused by undetermined setting time of the extra retarded set concrete is overcome and construction quality of the interlocking pile is improved. Compared with the prior art, the construction process for carrying out construction on the interlocking pile by adopting the rotary drilling rig and the mud protection wall method, which is disclosed by the invention, has the advantages that construction efficiency of the interlocking pile can be improved, integral quality of the interlocking pile is improved, and the application range of the interlocking pile is widened.

Description

A kind of construction technology of rotary drilling rig mud off method interlocking pile
Technical field
The present invention relates to the bracing of foundation pit technical field of construction, especially the technical field of construction of interlocking pile, particularly a kind of construction technology of rotary drilling rig mud off method interlocking pile.
Background technology
Interlocking pile is the foundation pit enclosure structure that between a kind of stake and stake, mutual interlock is arranged.The arrangement mode of stake is generally a plain concrete pile (A stake, element stake), a reinforced concrete pile (B stake, meat or fish stake) interval arranges, the plain concrete pile of first constructing during construction, rear construction reinforced bar concrete pile, requirement must be completed reinforced concrete pile before the concrete initial set of plain concrete pile.In recent years, the application in base pit engineering is more and more frequent, particularly is widely used in the subway station construction.
Traditional interlocking pile, adopt that mechanical grinding out, sleeve pipe press down, grab bucket is fetched earth and technique and the operation of follow-up pile in sleeve pipe.Plain concrete pile adopts super retarded concrete.As seen, traditional interlocking pile has following features:
1, need to install a complete set of cylinder.Install and the removal sleeve is wasted time and energy, can exert an influence to foundation ditch subsequent job operation, if not removing (it is pressed for time time), cost is improved; Become hole perpendicularity to be difficult to more accurately guarantee.
What 2, adopt is super retarded concrete.Super retarded concrete setting time is uncertain, is easy to the situation that causes construction to stagnate; Element stake freezing problem while having the meat or fish pile driving construction, pile quality is difficult to guarantee.
3, construct in rich water soft formation, need to increase in addition the waterproof measures such as auxiliary waterproof of man, therefore the applicability in such stratum is subject to certain limitation.
In a word, traditional interlocking pile, because needs are installed a complete set of cylinder, adopted super retarded concrete, causes efficiency of construction lower, and pile quality is difficult to unified, and the use in rich water soft stratum is subject to certain restrictions.
Summary of the invention
In order to solve the problem of prior art, the invention provides a kind of construction technology of rotary drilling rig mud off method interlocking pile, it can improve the efficiency of construction of interlocking pile; Improve the total quality of interlocking pile; Widen the scope of application of interlocking pile.
The technical solution adopted in the present invention is as follows:
A kind of construction technology of rotary drilling rig mud off method interlocking pile comprises the following steps:
A, stake position setting-out: after soil was unloaded by the design elevation kerve in top layer, on-the-spot unwrapping wire was made the stake position;
B, construction of guide wall: guide wall of occlusive pile adopts the C30 reinforced concrete structure, and template adopts the typing punching block, manually enters mould, and the plug-in type vibrating rod vibrates, and guarantees elevation of top surface, and verticality meets design requirement, form removal when concrete strength reaches 70%;
C, pore-forming: pore-forming adopts the rotary drilling rig construction, revolve in the process of digging and adopt mud off, catheter perfusion, described rotary drilling rig adopts the working platform Automatic Levelling that leads up and down, plumb bob by operating personnel's 90 degree monitors, guarantee verticality in 3 ‰, can control the pile body verticality by the rotary drilling rig operating platform in pore forming process;
Hanging of D, reinforcing cage: after detecting boring and clear hole, carry out hanging of reinforcing cage;
E, filling concrete: reinforcing cage hang complete after, carry out secondary pile hole cleaning, carry out filling concrete after complete;
F, empty stake backfill: after filling concrete is completed, still have the hole depth of 1m left and right for empty stake, use medium sand or plain earthen backfill.
In step C, inject in addition the step of fresh mud.
Fabrication of reinforcing cage in step D adopts the disposable making processing of whole cage, reinforcing bar cage hoisting adopts the mobile crane hoisted in position, the reinforcing bar outside is symmetrical arranged 4 spacer barss every 5~6 meters, and is placed in the middle to guarantee reinforcing cage, checks the absolute altitude of sleeve before lower cage, and calculative determination hangs muscle length, guarantee the accurate positioning of reinforcing cage absolute altitude, hang muscle and adopt 4 φ 12 reinforcing bars, before concreting, again check the absolute altitude of casing, guarantee that the absolute altitude error on reinforcing cage top is not more than 5cm.
Filling concrete in step e adopts tremie method cast underwater concrete, and the distance at the bottom of conduit Di Kou and hole can remain between 0.3~0.5m, and conduit is lowered to must be placed in the middle, in order to avoid the collision reinforcing cage.
In step e, for plain concrete pile, adopt the C20 underwater concrete, reinforced concrete pile adopts the C30 underwater concrete.
The basic match ratio of mud is: in 1m3 mud, and swell soil 116.6kg, soda ash 4.664kg, carboxymethyl cellulose 0.583kg, clear water 9.493kg.
The present invention adopts to revolve to dig to bore and applies interlocking pile, adopts mud off, thereby cancel, a complete set of cylinder is installed.Become hole perpendicularity automatically to adjust and to guarantee by rotary drilling rig verticality control system.
Plain concrete pile of the present invention is with being the super retarded concrete of ordinary concrete replacement.Overcome and stagnate and improve the interlocking pile construction quality because of the uncertain construction that causes of super retarded concrete setting time.
Plain concrete pile of the present invention (A stake, element stake) adopts the C20 underwater concrete, and reinforced concrete pile (B stake, meat or fish stake) adopts the C30 underwater concrete.Recommend a stake footpath 800mm, pile center is apart from 600mm, adjacent two interlock 200mm, the dark approximately 18m of stake.
The present invention strictly presses relevant parameter preparation mud.The basic match ratio of mud: in 1m3 mud, swell soil 116.6kg, soda ash 4.664kg, carboxymethyl cellulose 0.583kg, clear water 9.493kg.Mud stores and adopts half buried brick mud pit.Mud in mud pit, a part is processed from the regeneration of old mud, and a part is newly to prepare mud.Mud circulation adopts 3LM type slush pump to carry, and 4PL type slush pump reclaims, and by slush pump and flexible pipe, forms the mud circulation pipeline.
The beneficial effect that technical scheme provided by the invention is brought is:
1) a complete set of cylinder need not be installed, and element stake employing is ordinary concrete rather than super retarded concrete, therefore this invention can be saved the time of installing with a complete set of cylinder of removal, the situation of avoiding simultaneously the construction that causes because super retarded concrete setting time is uncertain to stagnate, operating efficiency can improve greatly; Saved the use of a complete set of cylinder and super retarded concrete, thereby the cost decrease.
2) applicable stratum scope is wide, the campshed space enclosing structure good seepage-proof property of especially constructing in rich water soft formation.Applicable geology have argillic horizon, flour sand layer, powder soil horizon,, cumulosol, boulder bed and strong, middle weathered rock formation.
3) need not to increase in addition waterproof measures such as assisting waterproof of man.
4) adopt the rotary drilling rig construction, become hole perpendicularity automatically to adjust and to guarantee by rotary drilling rig verticality control system.Therefore, interlocking pile terminal bearing stratum place dislocation intersects, and to depart from precision controlled, stake type standard.The whole proterties of campshed space enclosing structure of namely with rotary drilling rig, completing the formation of cutting interlock process under pile concrete final set state is good, supporting intensity is large, anti-seepage effect is good.The rotary drilling rig of some manufacturer production even can, by the HMI control system in driver's cabin, can know soil property situation and the pile bottom force holding layer situation judging and record institute's penetrating ground, so formation of pile be controlled easily.The construction technology highly versatile, easily grasp, and is beneficial to popularization.
5) according to controlling the meat or fish pile driving construction time time of setting of underwater concrete, revolve to dig and be drilled in meat or fish stake pore forming process and the element stake can be cut into coarse concrete surface, be similar to diaphragm wall brush wall effect, can effectively meat or fish stake and element stake be connected to become integral body, form good stagnant water effect.
6) due to the convenient disassembly of drill bit, can accelerate rate of penetration according to the variation of soil layer and the needs that creep into bit change more at any time, enlarge the scope of application of interlocking pile.
7) owing to being just to start the meat or fish pile driving construction after plain pile concrete final set, the problem that while effectively having avoided meat or fish pile driving construction in the conventional construction method, the element stake is solidified.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, in below describing embodiment, the accompanying drawing of required use is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the process chart of the construction technology of a kind of rotary drilling rig mud off method interlocking pile of the present invention.
The specific embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, embodiment of the present invention is described further in detail below in conjunction with accompanying drawing.
Embodiment one
As shown in Figure 1, the construction technology of a kind of rotary drilling rig mud off method interlocking pile of the present invention specifically comprises:
1) stake position setting-out.
After soil was unloaded by the design elevation kerve in top layer, on-the-spot unwrapping wire was made the stake position.Zhuan Wei is put 5cm outside center, piling wall top centerline deviation≤30mm in construction, pile body perpendicularity deviation≤3 ‰.
2) construction of guide wall.
Guide wall of occlusive pile adopts the C30 reinforced concrete structure.Template adopts the typing punching block, and every segment length is pressed the 3m consideration, leads the wall concrete and adopts the C30 commercial concrete, manually enters mould, and the plug-in type vibrating rod vibrates, and guarantees elevation of top surface, and verticality meets design requirement, form removal when concrete strength reaches 70%.
3) mud
In the underground continuous wall groove segment digging process,, in order to guarantee the stable of cell wall, continuously supply with fresh mud in groove, under water during concreting, a large amount of mud emissions will be arranged out simultaneously.The basic match ratio of mud is: in 1m3 mud, and swell soil 116.6kg, soda ash 4.664kg, carboxymethyl cellulose 0.583kg, clear water 9.493kg.
4) pore-forming
Pore-forming mainly adopts the ZR280C drilling machine construction, revolve in the process of digging and adopt mud off, catheter perfusion, this machine adopts the working platform Automatic Levelling that leads up and down, plumb bob by operating personnel's 90 degree monitors, guarantee verticality in 3 ‰, can control the pile body verticality by the rotary drilling rig operating platform in pore forming process.
5) reinforcing cage processing
Fabrication of reinforcing cage adopts the disposable making processing of whole cage.The reinforcing cage of making firmly is placed on smooth ground, prevents distortion.
6) reinforcing cage hangs.
Reinforcing bar cage hoisting adopts the mobile crane hoisted in position, and the reinforcing bar outside is symmetrical arranged 4 spacer barss every 5~6 meters, and is placed in the middle to guarantee reinforcing cage.Check the absolute altitude of sleeve before lower cage, and calculative determination hangs muscle length, the accurate positioning of assurance reinforcing cage absolute altitude.Hang muscle and adopt 4 φ 12 reinforcing bars.Before concreting, again check the absolute altitude of casing, guarantee that the absolute altitude error on reinforcing cage top is not more than 5cm.
7) filling concrete.
Filling concrete adopts tremie method cast underwater concrete.Conduit is lowered to length and actual hole depth and must does strictly and measure, and makes the distance at the bottom of conduit Di Kou and hole can remain on 0.3~0.5m left and right, and conduit is lowered to must be placed in the middle, in order to avoid the collision reinforcing cage.
8) empty stake backfill.
After filling concrete is completed, still have the hole depth of 1m left and right to be empty stake., for guaranteeing safety, after concreting is completed, use medium sand or plain earthen backfill.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.

Claims (6)

1. the construction technology of a rotary drilling rig mud off method interlocking pile comprises the following steps:
A, stake position setting-out: after soil was unloaded by the design elevation kerve in top layer, on-the-spot unwrapping wire was made the stake position;
B, construction of guide wall: guide wall of occlusive pile adopts the C30 reinforced concrete structure, and template adopts the typing punching block, manually enters mould, and the plug-in type vibrating rod vibrates, and guarantees elevation of top surface, and verticality meets design requirement, form removal when concrete strength reaches 70%;
C, pore-forming: pore-forming adopts the rotary drilling rig construction, revolve in the process of digging and adopt mud off, catheter perfusion, described rotary drilling rig adopts the working platform Automatic Levelling that leads up and down, plumb bob by operating personnel's 90 degree monitors, guarantee verticality in 3 ‰, can control the pile body verticality by the rotary drilling rig operating platform in pore forming process;
Hanging of D, reinforcing cage: after detecting boring and clear hole, carry out hanging of reinforcing cage;
E, filling concrete: reinforcing cage hang complete after, carry out secondary pile hole cleaning, carry out filling concrete after complete;
F, empty stake backfill: after filling concrete is completed, still have the hole depth of 1m left and right for empty stake, use medium sand or plain earthen backfill.
2. the construction technology of a kind of rotary drilling rig mud off method interlocking pile according to claim 1, is characterized in that, in described step C, injects in addition the step of fresh mud.
3. the construction technology of a kind of rotary drilling rig mud off method interlocking pile according to claim 1, it is characterized in that, fabrication of reinforcing cage in described step D adopts the disposable making processing of whole cage, reinforcing bar cage hoisting adopts the mobile crane hoisted in position, the reinforcing bar outside is symmetrical arranged 4 spacer barss every 5~6 meters, placed in the middle to guarantee reinforcing cage, check the absolute altitude of sleeve before lower cage, and calculative determination hangs muscle length, guarantee the accurate positioning of reinforcing cage absolute altitude, before concreting, again check the absolute altitude of casing, guarantee that the absolute altitude error on reinforcing cage top is not more than 5cm.
4. the construction technology of a kind of rotary drilling rig mud off method interlocking pile according to claim 1, it is characterized in that, filling concrete in described step e adopts tremie method cast underwater concrete, distance at the bottom of conduit Di Kou and hole can remain between 0.3~0.5m, conduit is lowered to must be placed in the middle, in order to avoid the collision reinforcing cage.
5. the construction technology of a kind of rotary drilling rig mud off method interlocking pile according to claim 1, is characterized in that, in described step e, for plain concrete pile, adopts the C20 underwater concrete, and reinforced concrete pile adopts the C30 underwater concrete.
6. the construction technology of a kind of rotary drilling rig mud off method interlocking pile according to claim 1 and 2, it is characterized in that, the basic match ratio of described mud is: in 1m3 mud, and swell soil 116.6kg, soda ash 4.664kg, carboxymethyl cellulose 0.583kg, clear water 9.493kg.
CN2013103173629A 2013-07-25 2013-07-25 Construction process for carrying out construction on interlocking pile by adopting rotary drilling rig and mud protection wall method Pending CN103388333A (en)

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Cited By (8)

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Publication number Priority date Publication date Assignee Title
CN104264663A (en) * 2014-10-21 2015-01-07 中煤地质工程总公司北京分公司 Hard cutting construction technology for secant piles
CN104452749A (en) * 2014-11-17 2015-03-25 杭州江润科技有限公司 Construction method of reinforced concrete current-poured pile
CN106284313A (en) * 2016-08-25 2017-01-04 陕西桩鑫建设工程有限公司 Long spire based on circulating mud retaining wall is squeezed into rock filling pile construction method
CN106400782A (en) * 2016-06-28 2017-02-15 中铁隧道集团二处有限公司 Construction method for construction of foundation pit support bored secant pile walls with rotary drilling rig
CN106703011A (en) * 2015-11-12 2017-05-24 甘肃建研岩土工程有限公司 Construction method of occlusive piles of water-containing pebble bed and saturated sandstone stratum
CN110359465A (en) * 2019-07-03 2019-10-22 深圳市工勘岩土集团有限公司 Pattern foundation pit supporting structure interlocking pile comprehensive construction method
CN111236214A (en) * 2020-01-18 2020-06-05 深圳市穿山甲工程技术有限公司 Construction method for constructing secant pile by lengthening protective cylinder of rotary drilling rig
CN112281821A (en) * 2020-11-16 2021-01-29 中铁十六局集团电气化工程有限公司 Cast-in-situ bored pile construction process

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104264663A (en) * 2014-10-21 2015-01-07 中煤地质工程总公司北京分公司 Hard cutting construction technology for secant piles
CN104452749A (en) * 2014-11-17 2015-03-25 杭州江润科技有限公司 Construction method of reinforced concrete current-poured pile
CN106703011A (en) * 2015-11-12 2017-05-24 甘肃建研岩土工程有限公司 Construction method of occlusive piles of water-containing pebble bed and saturated sandstone stratum
CN106400782A (en) * 2016-06-28 2017-02-15 中铁隧道集团二处有限公司 Construction method for construction of foundation pit support bored secant pile walls with rotary drilling rig
CN106400782B (en) * 2016-06-28 2019-01-04 中铁隧道集团二处有限公司 A kind of construction method for going along with sb. to guard him hole-drilling interlocking pile using rotary drilling rig construction foundation pit
CN106284313A (en) * 2016-08-25 2017-01-04 陕西桩鑫建设工程有限公司 Long spire based on circulating mud retaining wall is squeezed into rock filling pile construction method
CN106284313B (en) * 2016-08-25 2017-09-22 陕西桩鑫建设工程有限公司 Long spire based on circulating mud retaining wall is squeezed into rock filling pile construction method
CN110359465A (en) * 2019-07-03 2019-10-22 深圳市工勘岩土集团有限公司 Pattern foundation pit supporting structure interlocking pile comprehensive construction method
CN111236214A (en) * 2020-01-18 2020-06-05 深圳市穿山甲工程技术有限公司 Construction method for constructing secant pile by lengthening protective cylinder of rotary drilling rig
CN112281821A (en) * 2020-11-16 2021-01-29 中铁十六局集团电气化工程有限公司 Cast-in-situ bored pile construction process

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