CN102912791B - Construction method of bored pile - Google Patents
Construction method of bored pile Download PDFInfo
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- CN102912791B CN102912791B CN201210390839.1A CN201210390839A CN102912791B CN 102912791 B CN102912791 B CN 102912791B CN 201210390839 A CN201210390839 A CN 201210390839A CN 102912791 B CN102912791 B CN 102912791B
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Abstract
The invention provides a construction method of a bored pile. The construction method of the bored pile comprises the following steps: a), fixing a pile position, assembling a boring machine, connecting the bottom end of a threaded boring rod and a combined down-the-hole hammer, and fixing the boring machine at the pile position; moving a pile casing to a position above the boring machine, combining the pile casing above the bottom end of the combined down-the-hole hammer through the threaded boring rod, and superposing the pile casing with the boring machine axially; b), connecting a boring machine power head and the boring machine and driving the boring machine to rotate, connecting a pile casing power head and the pile casing and driving the pile casing to rotate, and making the rotating directions of the boring machine and the pile casing opposite; starting up the boring machine power head and the pile casing power head at the same time so that a boring head and the pile casing at the same time vertically bore downwards; c), boring to a designed bore depth, moving the boring machine out of a pile bore, and installing a reinforcement cage into the pile casing; d), installing a grouting pipe above the reinforcement cage, and pouring concrete into the pile casing through the grouting pipe; and e), after pouring, pulling out the pile casing, and solidifying and molding the bored pile. By the construction method of the bored pile, construction steps are reduced; and the environment pollution is avoided because a mud process is not adopted. Therefore, the construction method of the bored pile is high in efficiency.
Description
Technical field
The present invention relates to building field, specifically, relate to a kind of construction method of bored pile.
Background technology
In building foundation engineering, along with the development of the piling machinery of pore-forming operation, bored pile is widely applied to the foundation basic construction engineerings such as highrise building, highway bridge and large-scale structure.Fig. 1 a-1f shows the construction method of existing bored pile.As shown in Figure 1a, according to designing requirement, guide pile position, buries casing 2 underground.As shown in Figure 1 b, first, unchangable traditions rig 0 on stake position; Then, mud is prepared by slurrying equipment 81; As illustrated in figure 1 c, mud is transported in casing 2 by slurry transportation equipment 82, and conventional drilling machine 0 creeps into vertically downward, until reach the designing requirement degree of depth; As shown in Figure 1 d, conventional drilling machine 0 is shifted out in stake holes, the residue in cleaning stake holes; As shown in fig. le, reinforcing cage 5 is installed in stake holes, Grouting Pipe 6 is installed above reinforcing cage 5, funnel 7 is set above Grouting Pipe 6, installs, carry out secondary pile hole cleaning in stake holes, then, through Grouting Pipe 6 to concrete perfusion in casing 2; As shown in Figure 1 f, after having poured into, casing 2 is extracted.
The shortcoming of this method is, first, because casing 2 and conventional drilling machine 0 are constructions separately, not only adds working procedure, and needs constantly to stop boring, check the verticality of pile body, avoid stake holes to offset or inclined hole; Secondly, the conventional drilling machine 0 that present stage uses adopts and cuts and the mode process rock of grinding, and for the stratum of hard boulder bed or complexity, drilling efficiency is low, and bit wear is serious; Finally, the multiple step of existing construction method adopts grout technique, not only increases construction cost, and the parameter such as the viscosity of mud, relative density, sand content needs to change according to each factors such as rock stratum, has high requirement to the technical level of slurrying.
Summary of the invention
The present invention makes to solve the problem.Specifically, the object of the invention is to, a kind of construction method of bored pile is provided, make, in the work progress of bored pile, can construction sequence be simplified, can not grout technique be adopted, high efficiency pore-forming, form the bored pile that pass is regular.
To achieve these goals, the invention provides a kind of construction method of bored pile, the method comprises: a) guide pile position, and assembling rig, is connected threaded drillpipe bottom with combined down-hole hammer, and is fixed on stake position; Moved to above described rig by casing, make described casing by described threaded drillpipe to the top of described combined down-hole hammer bottom, described casing overlaps with described rig axis; B) drill power head connects and drives described rig to rotate, and casing unit head connects and drives described casing to rotate, and described rig is contrary with described casing direction of rotation; Start drill power head and casing unit head, then described rig and described casing creep into simultaneously vertically downward simultaneously; C) be drilled into design hole depth, described rig is shifted out stake holes, reinforcing cage is installed in described casing; D) Grouting Pipe is installed to above described reinforcing cage, by described Grouting Pipe to concrete perfusion in casing; E) after having poured into, casing is extracted, castinplace pile coagulation forming.
Preferably, described combined down-hole hammer is connected with described threaded drillpipe, and described combined down-hole hammer is used for the hard rock rock layers in swing crushing boring procedure.
Preferably, described drill power head can relative movement on described rig.
Preferably, described casing unit head can relative movement on described casing.
In addition, preferably, described casing one end is above the ground level, and the described casing other end is positioned at above combined down-hole hammer.
From description above with put into practice, adopt drill power head to drive rig, adopt casing unit head to drive casing simultaneously, first, boring and retaining wall carry out simultaneously, simplify the construction sequence of bored pile, save labour and construction cost; Secondly, adopt combined down-hole hammer fractured rock, improve drilling efficiency, realize high efficiency pore-forming; Again, drill central and casing central axis to overlapping, and creep into downwards simultaneously, therefore borehole shape is regular, avoids the phenomenon occurring that rig and casing collide; Finally, the rotation follow-up of casing instead of grout technique, saves construction cost, avoids environment pollution.
Accompanying drawing explanation
Fig. 1 a-1f shows the construction method of existing bored pile;
Fig. 2 shows the construction process figure of the bored pile described in one embodiment of the present of invention;
Fig. 3 shows the schematic diagram of the rig described in one embodiment of the present of invention; And
Fig. 4 a-4e shows the construction method of the bored pile described in one embodiment of the present of invention.
Detailed description of the invention
The embodiment of the construction method of bored pile of the present invention is described below with reference to the accompanying drawings.Those of ordinary skill in the art can recognize, when without departing from the spirit and scope of the present invention, can revise by various different mode to described embodiment.Therefore, accompanying drawing is illustrative with being described in essence, instead of for limiting the protection domain of claim.In addition, in this manual, identical Reference numeral represents same or analogous part.
Fig. 2 shows the construction process figure of the bored pile described in one embodiment of the present of invention.As shown in Figure 2, the construction process of bored pile of the present invention is as follows: first, first step S100 is according to designing requirement, the position of location drilling castinplace pile, rigging up 1, connecting thread drilling rod 12 and combined down-hole hammer 11, be fixed to stake position by rig 1, by casing 2 by above threaded drillpipe 12 to combined down-hole hammer 11 bottom; Secondly, second step S200 drives rig 1 to rotate by drill power head 3, and casing unit head 4 drives casing 2 to rotate in opposite direction, starts drill power head 3 and casing unit head 4 simultaneously, then rig 1 creeps into downwards with casing 2 simultaneously; Again, the 3rd step S300 is drilled into design hole depth, and rig 1 is shifted out stake holes, at the bottom of cleaning eye, measures hole depth, is installed to by reinforcing cage 5 in casing 2; Then, Grouting Pipe 6 is installed to above reinforcing cage 5 by the 4th step S400, after secondary empties, by Grouting Pipe 6 to concrete perfusion in casing 2; Finally, the 5th step S500 is after perfusion completes, and is extracted by casing 2, waits for bored pile coagulation forming.
Fig. 3 shows the schematic diagram of the rig described in one embodiment of the present of invention.As shown in Figure 3, rig 1 comprises combined down-hole hammer 11 and threaded drillpipe 12, and combined down-hole hammer 11 is applicable to the firm hard formation of various complexity, and combined down-hole hammer 11 can produce dither, form vibratory impulse energy, fast catalase is become fritter rock or rock ballast etc.; Threaded drillpipe 12 transports by the fritter rock, rock ballast etc. after combined down-hole hammer 11 fragmentation stake holes in stake holes.Relative to the conventional drilling machine 0 adopting the mode process rock cut and grind, greatly increase drilling efficiency and the compliance to firm hard formation, thus realize high efficiency pore-forming.
Fig. 4 a-4e shows the construction method of the bored pile described in one embodiment of the present of invention.
As shown in fig. 4 a, rig 1 is installed to stake position, makes rig 1 axially overlap with stake position.Wherein, rig 1 comprises combined down-hole hammer 11 and threaded drillpipe 12, casing 2 is moved to the vertical direction of rig 1, by casing 2 perpendicular through rig 1, casing 2 bottom arrives above combined down-hole hammer 11 through threaded drillpipe 12, and casing 2 top should a little more than ground.Casing 2 for rig 1 provide one be close to close boring, slagging channel.
As shown in Figure 4 b, drill power head 3 is connected to rig 1, and casing unit head 4 is connected to casing 2, and drill power head 3 drives rig 1 to turn clockwise, and casing unit head 4 drives casing 2 to be rotated counterclockwise; Start drill power head 3 and casing unit head 4, rig 1 and casing 2 creep on stake position simultaneously vertically downward simultaneously.Drill power head 3 drives that rig 1 is holed, deslagging, and meanwhile, casing unit head 4 drives casing 2 to rotate follow-up, and protection aperture does not cave in, and safeguards hole wall, instead of the retaining wall effect of mud, avoid the environment pollution that mud operation is brought.Wherein, the direction of rotation of rig 1 and casing 2 also can be changed mutually, and namely drill power head 3 drives rig 1 to be rotated counterclockwise, and casing unit head 4 drives casing 2 to turn clockwise, and only rig 1 need be kept contrary with the direction of rotation of casing 2.And for convenience of operation, drill power head and casing unit head can relative movements on rig and casing.
As illustrated in fig. 4 c, after reaching the designing requirement degree of depth, move on to stake holes by rig 1 in stake holes, casing 2 rests in stake holes.After rig 1 is shifted out stake holes, whether cleaning stake holes bottom residues, measure the parameter such as hole depth, aperture and meet design requirement, if do not met, then repeat above-mentioned steps, until meet designing requirement.Then, in stake holes, reinforcing cage 5 is installed.First, reinforcing cage 5 is moved to casing 2 vertical direction, then, placing in the process of reinforcing cage 5 in casing 2, the verticality of reinforcing cage 5 be checked, and slowly reinforcing cage 5 is placed in casing 2, collision free casing 2.
As shown in figure 4d, Grouting Pipe 6 is installed above reinforcing cage 5, funnel 7 is set above Grouting Pipe 6, concrete is filled in casing 2 through Grouting Pipe 6 by funnel 7.In installation reinforcing cage 5 and Grouting Pipe 6 process, the residue that bottom stake holes, possibility heap is new, therefore, will carry out secondary cleaning to bottom stake holes before concrete perfusion, bottom stake holes, the thickness of residual residue must meet design requirement.
As shown in fig 4e, after filling concrete completes, drill power head 3 is selected to carry out tube drawing construction.Within the initial setting time, drill power head 3 drives casing 2, is slowly extracted by casing 2 in stake holes, avoids destroying casing 2 or hole wall.So far, the construction of bored pile completes.
From description above with put into practice, adopt drill power head to drive rig, adopt casing unit head to drive casing simultaneously, first, boring and retaining wall carry out simultaneously, and the construction sequence simplifying bored pile saves labour and construction cost; Secondly, adopt combined down-hole hammer fractured rock, improve drilling efficiency, realize high efficiency pore-forming; Again, the threaded drillpipe of rig is identical with casing longitudinal center line, and creeps into downwards simultaneously, therefore borehole shape is regular, avoids the phenomenon occurring that rig and casing collide; Finally, the rotation follow-up of casing, can play retaining wall effect, so instead of mud, saves construction cost, avoids environment pollution.
The construction method of bored pile of the present invention is described in an illustrative manner above with reference to accompanying drawing.But, it will be appreciated by those skilled in the art that for said method, various improvement and combination can also be made on the basis not departing from content of the present invention.Therefore, protection scope of the present invention should be determined by the content of appending claims.
Claims (3)
1. a construction method for bored pile, comprising:
A) guide pile position, assembling rig, threaded drillpipe bottom is connected with combined down-hole hammer, and be fixed on stake position, described rig is axially overlapped with described stake position, wherein, described combined down-hole hammer is used for the hard rock rock layers in swing crushing boring procedure, and described threaded drillpipe is used for the fritter rock after described combined down-hole hammer fragmentation, rock ballast to transport stake holes in stake holes; Casing is moved to the vertical direction of described rig, make the bottom of described casing by described threaded drillpipe to the top of described combined down-hole hammer bottom, the top of described casing is above the ground level, and described casing overlaps with described rig axis;
B) drill power head connects and drives described rig to rotate, and casing unit head connects and drives described casing to rotate, and described rig is contrary with described casing direction of rotation; Start drill power head and casing unit head, then described drill bit and described casing creep into simultaneously vertically downward simultaneously;
C) be drilled into design hole depth, described rig is shifted out stake holes, described casing is rested in stake holes, at the bottom of cleaning eye, measure hole depth, reinforcing cage is installed in described casing from the vertical direction of described casing;
D) Grouting Pipe is installed to above described reinforcing cage, to after carrying out secondary cleaning bottom described stake holes, by described Grouting Pipe to concrete perfusion in casing;
E) after having poured into, within the initial setting time, described drill power head is adopted to drive described casing to be extracted by casing, castinplace pile coagulation forming.
2. the construction method of bored pile as claimed in claim 1, wherein, described drill power head can relative movement on described rig.
3. the construction method of bored pile as claimed in claim 1, wherein, described casing unit head can relative movement on described casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210390839.1A CN102912791B (en) | 2012-10-15 | 2012-10-15 | Construction method of bored pile |
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| CN201210390839.1A CN102912791B (en) | 2012-10-15 | 2012-10-15 | Construction method of bored pile |
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| CN102912791A CN102912791A (en) | 2013-02-06 |
| CN102912791B true CN102912791B (en) | 2015-06-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106836199A (en) * | 2017-01-12 | 2017-06-13 | 中交公局第五工程有限公司 | A kind of roadbed construction process for bored pile |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103161163B (en) * | 2013-03-27 | 2015-01-28 | 孔超 | Prestressed tubular pile for spinning rock drilling and embedding rock socketing |
| CN103527087B (en) * | 2013-09-26 | 2017-01-11 | 浙江钱塘江水利建筑工程公司 | Impact holing method in cast-in-place construction method |
| CN106351575A (en) * | 2016-11-07 | 2017-01-25 | 赵宽学 | Hole-protecting and pile-drilling method |
| CN106481272B (en) * | 2016-12-22 | 2018-06-15 | 杨静漪 | Single-stage driving hydraulic pressure puies forward brill formula dynamical system |
| CN110374505B (en) * | 2019-07-25 | 2021-03-16 | 温州林嘉建筑有限公司 | Drilling machine and cast-in-situ bored pile construction method |
| CN113914305A (en) * | 2021-08-31 | 2022-01-11 | 中国化学工程第十四建设有限公司 | Breakwater filling pile hole-forming filling method |
| CN114032888B (en) * | 2021-11-22 | 2023-04-28 | 中国电建集团华东勘测设计研究院有限公司 | Grouting pile casing structure of offshore rock-socketed pile and construction method |
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| CN101063400A (en) * | 2006-04-26 | 2007-10-31 | 包尔机械有限公司 | Drilling device for producing drilling column in soil and method thereof |
| CN101435312A (en) * | 2007-11-13 | 2009-05-20 | 上海金泰工程机械有限公司 | Multifunctional hammer drill |
| CN201843512U (en) * | 2010-11-12 | 2011-05-25 | 北京市三一重机有限公司 | Auger drill |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2008075266A (en) * | 2006-09-19 | 2008-04-03 | Hokukon Material Kk | Method of constructing pile |
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| CN101024958A (en) * | 2006-02-24 | 2007-08-29 | 董相东 | Drilling poured-pile hole-bottom slurry-injection pile-forming method |
| CN101063400A (en) * | 2006-04-26 | 2007-10-31 | 包尔机械有限公司 | Drilling device for producing drilling column in soil and method thereof |
| CN101435312A (en) * | 2007-11-13 | 2009-05-20 | 上海金泰工程机械有限公司 | Multifunctional hammer drill |
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| CN106836199A (en) * | 2017-01-12 | 2017-06-13 | 中交公局第五工程有限公司 | A kind of roadbed construction process for bored pile |
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| CN102912791A (en) | 2013-02-06 |
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Address after: 100085, Beijing economic and Technological Development Zone, Kangding street, No. 2, building six or seven, 1 Patentee after: MCC COMMUNICATION CONSTRUCTION GROUP CO., LTD. Address before: 100028, Beijing, Chaoyang District, No. 28, west of China Metallurgical Building, 18 and 19 Patentee before: MCC Communication Engineering Technology Co., Ltd. |