CN103266600B - Construction method of occlusion pile of full reinforcement pile - Google Patents
Construction method of occlusion pile of full reinforcement pile Download PDFInfo
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Abstract
An occlusion pile of a full reinforcement pile and a construction method thereof belong to the technical field of building construction. The occlusion pile formed by square reinforcement cage concrete piles and a circular reinforcement cage concrete pile which are connected in an occlusion mode and arranged at intervals is obtained through processes of construction of a guide wall, in-place of a drilling machine, down-pushing of a sleeve, soil taking and hole forming, construction of a first square reinforcement cage concrete pile, hanging of a square reinforcement cage, pouring of concrete, construction of a second square reinforcement cage concrete pile, construction of a first circular reinforcement cage concrete pile and the like. Under the condition that pile gaps are not changed, the square reinforcement cage is added in a plain pile, and polyvinyl chloride (PVC) pipes are fixed on two sides of the square reinforcement cage. A part of PVC pipes are cut off during construction of the circular reinforcement cage concrete pile, water seepage paths among piles are extended, and water seepage probability is reduced. The circular reinforcement cage concrete pile and the square reinforcement cage concrete piles resist the pressure of active soil outside a pit together after a foundation pit is excavated, steel content of a whole occlusion pile enclosure system is increased, and higher enclosure rigidity is obtained.
Description
Technical field
The invention belongs to technical field of building construction, be specifically related to a kind of construction method of interlocking pile of full Steel-bar Pile.
Background technology
Tradition interlocking pile has adopted the form of steel one element to construct, but for some to the more sensitive position of surrounding enviroment deformation ratio, near subway or very near shallow foundation building, settlement request to periphery is high, so the rigidity requirement of fender body is higher, traditional interlocking pile only has Steel-bar Pile to bear active earth pressure, the effect of water-stop curtain is just played in element stake, can not bear pressure, in the larger situation of the spacing of Steel-bar Pile, larger on foundation pit deformation impact; But less Steel-bar Pile spacing will cause element stake cutting too much, waste concrete.
Summary of the invention
For the above-mentioned problems in the prior art, the object of the present invention is to provide a kind of interlocking pile and construction method thereof of full Steel-bar Pile, it is not in the situation that changing pile spacing, in element stake, added reinforcing cage, make Steel-bar Pile and original element stake can together with resist the initiatively pressure of soil, increase whole steel content of going along with sb. to guard him system, thereby obtain the larger rigidity of going along with sb. to guard him.
The interlocking pile of described a kind of full Steel-bar Pile, it is characterized in that comprising the one group of stake of square reinforcing cage concrete and circular reinforced concrete pile that interval is connected successively, described square reinforcing cage concrete stake is formed by square reinforcing cage and conventional pouring concrete, and described circular reinforced concrete pile is formed by circular reinforcing cage and conventional pouring concrete.
The interlocking pile of described a kind of full Steel-bar Pile, is characterized in that the both sides, long limit of square reinforcing cage are fixedly installed respectively the pvc pipe that diameter is 250mm.
The construction method of the interlocking pile of described a kind of full Steel-bar Pile, is characterized in that comprising the steps:
1) preparation of construction and measure of pile position unwrapping wire arrange interlocking pile around at need, site clearing, then according to the position of interlocking pile, unwrapping wire is measured in stake position, determine stake hole home position;
2) construction of leading wall, before carrying out bored pile, prevents that aperture from caving in, and guarantees the smooth operation of all casing drill, and controls stake position positioning precision and guarantee the interlock amount between design stake and stake, according to unwrapping wire position, arranges and leads wall;
3) rig is in place according to pre-determined stake hole home position, 4 footings of full-rotating drill are aimed to location, and adjust the height of 4 footings of full-rotating drill, adjust the level gauge that footing observes full-rotating drill fuselage carry simultaneously, to reach standard of fuselage, be as the criterion, after rig is in place, will overlap center, tube hub align piles position, the space of sleeve pipe around and between locating hole kept evenly; Then adopt verticality detector to measure sleeve pipe verticality.
4) press down sleeve pipe, soil taking hole forming, construct and press down successively in order when first square reinforcing cage concrete stake presses down sleeve pipe, first first segment sleeve pipe is hung in the full-rotating drill anchor ear of step 3), the align piles heart, with full-rotating drill autogamy instrument and monitoring instrument, proofread and correct verticality, in sleeve pipe verticality, reach 3 ‰ first segment sleeve pipe is pressed in soil after interior, then use punching grab bucket to fetch earth in this sleeve pipe, repeat this operation repeatedly, until after first segment sleeve pipe presses down and puts in place, second section sleeve pipe is installed again, punching grab bucket is fetched earth, and so forth, until reach the design stake end,
5) hang the pore-forming that square reinforcing cage obtains in step 4) and hang after the assay was approved square reinforcing cage, the long limit of square reinforcing cage is with to lead wall vertical, and broadside is with to lead wall parallel;
6) concrete perfusion is first poured concrete in aggregate bin into, then with loop wheel machine, hangs aperture, pours in the storage bin(hopper) on conduit top, in the time of concrete perfusion, tube drawing, remains that conduit is lower than more than concrete surface 2.5m on one side, and so forth until concrete is filled with to high to stake top mark;
7) second the square reinforcing cage concrete stake repeating step 4 of constructing)-6), second square reinforcing cage concrete stake of constructing;
8) construct first circular reinforcing cage concrete stake between first square reinforcing cage concrete stake and the stake of second square reinforcing cage concrete, repeating step 4)-6), in construction sequence 5) time, circular reinforcing cage is replaced to square reinforcing cage, carry out first circular reinforcing cage concrete pile driving construction;
9) repeating step 7) the 3rd the square reinforcing cage concrete stake of constructing;
10) repeating step 8) second circular reinforcing cage concrete stake of constructing between the stake of second square reinforcing cage concrete and the 3rd square reinforcing cage concrete stake;
11) repeat successively above-mentioned steps, complete to interlocking pile construction.
The construction method of the interlocking pile of described a kind of full Steel-bar Pile, is characterized in that step 2) described construction of guide wall comprises the steps:
1) smooth location is removed earth's surface foreign material, and underground utilities migration, then fills and leads up and roll, to ensure enough bearing capacities;
2) coordinate that measuring stake position provides according to design drawing calculates campshed centre coordinate, adopts total powerstation to carry out setting-out on the spot according to ground control point, and carries out fender pile, as the control center line of construction of guide wall;
3) lead wall channel excavation and after the setting-out of stake position meets the requirements, carry out channel excavation, after excavation, immediately center line is introduced under groove, to control bed die and template construction, guarantee to lead the correct of center line of wall;
4) template construction adopts the whole wooden model of self-control or punching block sectionally smooth join, leading the reserved locating hole template diameter of wall is that casing diameter expands 2cm, formwork reinforcement adopts wood support to combine with steel pipe support, support interval is generally less than or equals 1m, guarantee to reinforce firmly, be strictly on guard against race mould, and guarantee the accurate of axis and headroom;
5) reinforcing bar binding template fixing after colligation lead wall reinforcing bar, reinforcing bar is arranged by designing requirement, and need be up to the standards;
6) after the verticality of concreting inspection template and center line and clear distance meet the requirements, carry out concreting, during concreting, both sides symmetry hockets, and is strictly on guard against race mould;
7) form removal, check when leading wall and have after enough intensity, stripping, positions and checks stake hole, and stake position is numbered, so that follow-up construction needs.
The construction method of the interlocking pile of described a kind of full Steel-bar Pile, it is characterized in that full-rotating drill bottom described in step 3) arranges fixing steel plate auxiliary in place, method of operating is: determine stake hole home position, by the center of circle of fixing steel plate aim at lead wall stake hole circle heart position of sound production fixing after, again 4 footings of rig are aimed on fixing steel plates to footing spacing, with loop wheel machine hang onto on steel plate, complete in place.
The construction method of the interlocking pile of described a kind of full Steel-bar Pile, it is characterized in that step 4) pressing down sleeve pipe, to press down one stroke be 0.5-0.8m, when front two sleeve pipes press down, all will carry out squareness measurement, after pressing down and putting in place, it is high that sleeve pipe withstands on fuselage reserved 0.8-1.0m, to take over.
The construction method of the interlocking pile of described a kind of full Steel-bar Pile, is characterized in that the both sides, long limit of the square reinforcing cage described in step 5) are fixedly installed respectively the pvc pipe that diameter is 250mm.
The construction method of the interlocking pile of described a kind of full Steel-bar Pile, while it is characterized in that step 6) starts to pour into, first pours into 2-3m
3concrete promotes 20-30cm by sleeve pipe, guarantees that reinforcing cage is without rising phenomenon.
The construction method of the interlocking pile of described a kind of full Steel-bar Pile, while it is characterized in that step 6) concrete perfusion, while having water in hole, adopts the perfusion of underwater concrete method; In hole, the anhydrous dry hole that adopts pours into.
By adopting above-mentioned technology, compared with prior art, beneficial effect of the present invention is as follows:
1) the present invention is not in the situation that changing pile spacing, in element stake, added square reinforcing cage, make the stake of circular reinforcing cage concrete resist the initiatively pressure of soil together with the stake of square reinforcing cage concrete, improve the steel content that whole interlocking pile is gone along with sb. to guard him system, thereby obtain the larger rigidity of going along with sb. to guard him;
2) the present invention adopts fixing steel plate auxiliary in place under full-rotating drill, has improved full-rotating drill accuracy in place, time saving and energy saving, improves rig efficiency in place, saves single pile Finish time;
3) direction of wall is vertically led on the long limit of square reinforcing cage of the present invention, consider the loading characteristic of square reinforcing cage, the pvc pipe that the present invention is 250mm at the both sides of square reinforcing cage fixed diameter, the fixing position of reinforcing cage not only, but also saved the concrete in the area that repeats construction, and when circular reinforcing cage concrete pile driving construction, cut away a part of pvc pipe, and between stake and stake, extended infiltration path, reduced infiltration probability;
4) the present invention adopts full circle swinging equipment, comprise that device for revolving and driving, steel sleeve, hydraulic punch grab bucket and 100 tons of crawler cranes match, first by sleeve pipe pressure pile position, then adopting punching to grab takes out the soil in sleeve pipe, then lay reinforcing cage and concrete perfusion, obtain interlocking pile, easy to operate;
5) construction method of the present invention is simple, in original element stake, increase square reinforcing cage, the interlocking pile obtaining is not in the situation that changing pile spacing, in element stake, also added square reinforcing cage, make the stake of circular reinforcing cage concrete and the stake of square reinforcing cage concrete jointly bear the active earth pressure after excavation of foundation pit, thereby obtain the larger rigidity of going along with sb. to guard him.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the wall construction schematic diagram of leading of the present invention.
In figure: 1-PVC pipe, the square reinforcing cage of 2-, first square reinforcing cage concrete stake of 3-, first circular reinforcing cage concrete stake of 4-, the circular reinforcing cage of 5-, 6-leads wall, the stake of second square reinforcing cage concrete of 7-.
The specific embodiment
The invention will be further described below, but protection scope of the present invention is not limited in this:
As shown in Figure 1-2, the interlocking pile of a kind of full Steel-bar Pile of the present invention, comprise the one group of stake of square reinforcing cage concrete and circular reinforced concrete pile that interval is connected successively, described square reinforcing cage concrete stake is formed by square reinforcing cage 2 and conventional pouring concrete, described circular reinforced concrete pile is formed by circular reinforcing cage 5 and conventional pouring concrete, in order to improve square reinforcing cage firmness, the present invention is fixedly installed respectively in the both sides, long limit of square reinforcing cage the pvc pipe that diameter is 250mm, and the construction method of this interlocking pile is as follows:
1) preparation of construction and measure of pile position unwrapping wire arrange interlocking pile around at need, site clearing, then according to the position of interlocking pile, unwrapping wire is measured in stake position, determine stake hole home position;
2) lead the construction of wall 6 for the construction of Benoto occlusive piles, before carrying out bored pile, having a very crucial step is exactly to lead the construction of wall, lead the correctly plan-position of keyhole of wall, support facility weight, prevent that aperture from caving in, guarantee the smooth operation of all casing drill and guarantee the interlock amount between stake and stake, so successfully to complete the construction of leading wall be the key of guaranteeing that follow-up work is carried out smoothly.Lead wall and generally adopt Reinforced Concrete Materials, its construction sequence is as follows:
A smooth location is removed earth's surface foreign material, and underground utilities migration, then fills and leads up and roll, to ensure enough bearing capacities, and generally need to be more than 100Kpa;
The coordinate that b measuring stake position provides according to design drawing calculates campshed centre coordinate, and (can to stake position center line, carry out the outer of certain size according to different requirements puts, the structure headroom causing to intrinsic displacement under lateral earth pressure effect outside when offsetting the deviation of self verticality and excavation of foundation pit changes), adopt total powerstation to carry out setting-out on the spot according to ground control point, and carry out fender pile, as the control center line of construction of guide wall;
C leads wall channel excavation and after the setting-out of stake position meets the requirements, carries out channel excavation, after excavation, immediately center line is introduced under groove, to control bed die and template construction, guarantees to lead the correct of center line of wall;
D template construction template adopts the whole wooden model of self-control or punching block sectionally smooth join, leading the reserved locating hole template diameter of wall is that casing diameter expands 2cm, formwork reinforcement adopts wood support to combine with steel pipe support, support interval is generally not more than 1m, guarantee to reinforce firmly, be strictly on guard against race mould, and guarantee the accurate of axis and headroom;
After e reinforcing bar binding template is fixing, wall reinforcing bar is led in colligation, and reinforcing bar is arranged by designing requirement, through carrying out next process after the assay was approved;
Before f concreting concreting, whether the verticality of palpus inspection template and center line and clear distance meet the requirements, and meet the demands and can build.During concreting, both sides symmetry hockets, and is strictly on guard against race mould.The employing poker vibrator that vibrates, the spacing of vibrating is 600mm left and right, prevents the inequality of vibrating, and also will prevent from crossing at a place shaking and walking mould phenomenon simultaneously.As run mould, and must stop immediately building, can continue to water to smash after again reinforcing and be corrected to designing requirement;
G form removal, check when leading wall and have after enough intensity, stripping, positions and checks stake hole.And stake position is numbered, so that follow-up construction needs;
3) rig is in place because full-rotating drill is from focusing on 50 tons of left and right, therefore rig accurate positioning is wasted time and energy very much, adopts fixing steel plate auxiliary in place for this reason, to improve rig efficiency in place, saves single pile Finish time.Determine in advance a stake hole home position, by the center of circle of fixing steel plate aim at lead wall stake hole circle heart position of sound production fixing after, then it is spacing that 4 footings of rig are aimed on fixing steel plates to footing, with loop wheel machine hang onto on steel plate, complete in place.4 footings of rig can independently be adjusted height, adjust footing and observe fuselage carry level gauge simultaneously, to reach standard of fuselage, guarantee sleeve pipe energy vertical depression.After rig is in place, will overlap center, tube hub align piles position, the space of sleeve pipe around and between locating hole kept evenly; Then adopt verticality detector to measure sleeve pipe verticality.
4) press down sleeve pipe, soil taking hole forming, construct and press down successively in order when first square reinforcing cage concrete stake 3 presses down sleeve pipe, first first segment sleeve pipe is hung in the full-rotating drill anchor ear of step 3), the align piles heart, with full-rotating drill autogamy instrument and monitoring instrument, proofread and correct verticality, in sleeve pipe verticality, reach 3 ‰ first segment sleeve pipe is pressed in soil after interior, then use punching grab bucket to fetch earth in this sleeve pipe, repeat this operation repeatedly, until after first segment sleeve pipe presses down and puts in place, second section sleeve pipe is installed again, punching grab bucket is fetched earth, and so forth, until reach the design stake end, sleeve pipe presses down one stroke and is generally 0.5-0.8m, when pressing down, front two sleeve pipes all to carry out squareness measurement, in verticality, reach in 3 ‰, to meet required precision, after pressing down and putting in place, it is high that general sleeve pipe withstands on fuselage reserved 0.8-1.0m, and the length of described sleeve pipe is 6m, according to the height in actual stake hole, access the sleeve pipe of corresponding radical,
5) hang the pore-forming that square reinforcing cage 2 obtains in step 4) and hang after the assay was approved square reinforcing cage, the long limit of square reinforcing cage 2 is with to lead wall vertical, broadside is with to lead wall parallel, must guarantee reinforcing cage absolute altitude, position, angle, direction correct, owing to considering the loading characteristic of square reinforcing cage 2, the direction that the long limit of square reinforcing cage 2 should vertically be gone along with sb. to guard him, all with respect to the stake of circular reinforcing cage concrete, when laying, the stake of square reinforcing cage concrete need to consider direction, the pvc pipe 1 that it is 250mm at the both sides of square reinforcing cage fixed diameter that the present invention adopts, the fixing position of reinforcing cage not only, but also saved the concrete in the area that repeats construction, construction by the stake of circular reinforcing cage concrete cuts away a part of pvc pipe 1, between stake and stake, extended infiltration path, reduced infiltration probability,
6) concrete perfusion is first poured concrete in aggregate bin into, then with loop wheel machine, hangs aperture, pours in the storage bin(hopper) on conduit top, in the time of concrete perfusion, tube drawing, remains that conduit is lower than more than concrete surface 2.5m on one side, and so forth until concrete is filled with to high to stake top mark; When having water in hole, adopt the perfusion of underwater concrete method; As the anhydrous dry hole that can adopt in hole pours into, while starting to pour into, should first pour into 2-3m
3concrete promotes 20-30cm by sleeve pipe, and to observe, whether reinforcing cage has floating or mechanically whether pull out force is difficult; Must stop immediately if you have questions perfusion, take can pour into after corresponding measure;
7) second square reinforcing cage concrete stake, 7 repeating steps 4 of constructing)-6), second the square reinforcing cage concrete stake 7 of constructing;
8) construct first circular reinforcing cage concrete stake 4 between first square reinforcing cage concrete stake 3 and second square reinforcing cage concrete stake 7, repeating step 4)-6), in construction sequence 5) time, circular reinforcing cage 5 is replaced to square reinforcing cage 2, carry out first circular reinforcing cage concrete stake 4 constructions, during construction in the initial set of concrete of these two stakes but not final set can simplify the operation like this, can prevent that again the concrete of not initial set is by managing underflow in pipe, thus the destruction that causes element stake;
9) repeating step 7) the 3rd the square reinforcing cage concrete stake of constructing;
10) repeating step 8) second circular reinforcing cage concrete stake of constructing between the stake of second square reinforcing cage concrete and the 3rd square reinforcing cage concrete stake;
11) repeat successively above-mentioned steps, complete to interlocking pile construction.
Claims (8)
1. the construction method of the interlocking pile of a full Steel-bar Pile, comprise the one group of stake of square reinforcing cage concrete and circular reinforced concrete pile that interval is connected successively, described square reinforcing cage concrete stake is formed by square reinforcing cage (2) and conventional pouring concrete, described circular reinforced concrete pile is formed by circular reinforcing cage (5) and conventional pouring concrete, it is characterized in that comprising the steps:
1) preparation of construction and measure of pile position unwrapping wire arrange interlocking pile around at need, site clearing, then according to the position of interlocking pile, unwrapping wire is measured in stake position, determine stake hole home position;
2) construction of leading wall, before carrying out bored pile, prevents that aperture from caving in, and guarantees the smooth operation of all casing drill, and controls stake position positioning precision and guarantee the interlock amount between design stake and stake, according to unwrapping wire position, arranges and leads wall (6);
3) rig is in place according to pre-determined stake hole home position, 4 footings of full-rotating drill are aimed to location, and adjust the height of 4 footings of full-rotating drill, adjust the level gauge that footing observes full-rotating drill fuselage carry simultaneously, to reach standard of fuselage, be as the criterion, after rig is in place, will overlap center, tube hub align piles position, the space of sleeve pipe around and between locating hole kept evenly; Then adopt verticality detector to measure sleeve pipe verticality;
4) press down sleeve pipe, soil taking hole forming, construct and press down successively in order when first square reinforcing cage concrete stake (3) presses down sleeve pipe, first first segment sleeve pipe is hung in the full-rotating drill anchor ear of step 3), the align piles heart, with full-rotating drill autogamy instrument and monitoring instrument, proofread and correct verticality, in sleeve pipe verticality, reach 3 ‰ first segment sleeve pipe is pressed in soil after interior, then use punching grab bucket to fetch earth in this sleeve pipe, repeat this operation repeatedly, until after first segment sleeve pipe presses down and puts in place, second section sleeve pipe is installed again, punching grab bucket is fetched earth, and so forth, until reach the design stake end,
5) hang the pore-forming that square reinforcing cage obtains in step 4) and hang after the assay was approved square reinforcing cage (2), the long limit of square reinforcing cage (2) is with to lead wall (6) vertical, and broadside is with to lead wall parallel;
6) concrete perfusion is first poured concrete in aggregate bin into, then with loop wheel machine, hangs aperture, pours in the storage bin(hopper) on conduit top, in the time of concrete perfusion, tube drawing, remains that conduit is lower than more than concrete surface 2.5m on one side, and so forth until concrete is filled with to high to stake top mark;
7) second square reinforcing cage concrete stake (7) repeating step 4 of constructing)-6), second square reinforcing cage concrete stake of constructing;
8) construct first circular reinforcing cage concrete stake (4) between first square reinforcing cage concrete stake (3) and second square reinforcing cage concrete stake (7), repeating step 4)-6), in construction sequence 5) time, circular reinforcing cage (5) is replaced to square reinforcing cage (2), carry out first circular reinforcing cage concrete stake (4) construction;
9) repeating step 7) the 3rd the square reinforcing cage concrete stake of constructing;
10) repeating step 8) second circular reinforcing cage concrete stake of constructing between the stake of second square reinforcing cage concrete and the 3rd square reinforcing cage concrete stake;
11) repeat successively above-mentioned steps, complete to interlocking pile construction.
2. the construction method of the interlocking pile of a kind of full Steel-bar Pile according to claim 1, is characterized in that the both sides, long limit of square reinforcing cage are fixedly installed respectively the pvc pipe that diameter is 250mm (1).
3. the construction method of the interlocking pile of a kind of full Steel-bar Pile according to claim 1, is characterized in that step 2) described construction of guide wall comprises the steps:
1) smooth location is removed earth's surface foreign material, and underground utilities migration, then fills and leads up and roll, to ensure enough bearing capacities;
2) coordinate that measuring stake position provides according to design drawing calculates campshed centre coordinate, adopts total powerstation to carry out setting-out on the spot according to ground control point, and carries out fender pile, as the control center line of construction of guide wall;
3) lead wall channel excavation and after the setting-out of stake position meets the requirements, carry out channel excavation, after excavation, immediately center line is introduced under groove, to control bed die and template construction, guarantee to lead the correct of center line of wall;
4) template construction adopts the whole wooden model of self-control or punching block sectionally smooth join, leading the reserved locating hole template diameter of wall is that casing diameter expands 2cm, formwork reinforcement adopts wood support to combine with steel pipe support, support interval is generally less than or equals 1m, guarantee to reinforce firmly, be strictly on guard against race mould, and guarantee the accurate of axis and headroom;
5) reinforcing bar binding template fixing after colligation lead wall reinforcing bar, reinforcing bar is arranged by designing requirement, and need be up to the standards;
6) after the verticality of concreting inspection template and center line and clear distance meet the requirements, carry out concreting, during concreting, both sides symmetry hockets, and is strictly on guard against race mould;
7) form removal, check when leading wall and have after enough intensity, stripping, positions and checks stake hole, and stake position is numbered, so that follow-up construction needs.
4. the construction method of the interlocking pile of a kind of full Steel-bar Pile according to claim 1, it is characterized in that full-rotating drill bottom described in step 3) arranges fixing steel plate auxiliary in place, method of operating is: determine stake hole home position, by the center of circle of fixing steel plate aim at lead wall stake hole circle heart position of sound production fixing after, again 4 footings of rig are aimed on fixing steel plates to footing spacing, with loop wheel machine hang onto on steel plate, complete in place.
5. the construction method of the interlocking pile of a kind of full Steel-bar Pile according to claim 1, it is characterized in that step 4) pressing down sleeve pipe, to press down one stroke be 0.5-0.8m, when pressing down, front two sleeve pipes all to carry out squareness measurement, after pressing down and putting in place, it is high that sleeve pipe withstands on fuselage reserved 0.8-1.0m, to take over.
6. the construction method of the interlocking pile of a kind of full Steel-bar Pile according to claim 1, is characterized in that the both sides, long limit of the square reinforcing cage (2) described in step 5) are fixedly installed respectively the pvc pipe that diameter is 250mm (1).
7. the construction method of the interlocking pile of a kind of full Steel-bar Pile according to claim 1, while it is characterized in that step 6) starts to pour into, first pours into 2-3m
3concrete promotes 20-30cm by sleeve pipe, guarantees that reinforcing cage is without rising phenomenon.
8. the construction method of the interlocking pile of a kind of full Steel-bar Pile according to claim 1, while it is characterized in that step 6) concrete perfusion, while having water in hole, adopts the perfusion of underwater concrete method; In hole, the anhydrous dry hole that adopts pours into.
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| KR101742812B1 (en) * | 2016-08-29 | 2017-06-01 | 김사문 | Construction casing for concrete piles |
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| CN102011397A (en) * | 2010-11-09 | 2011-04-13 | 中安泰达建设发展(北京)有限公司 | Construction process of concrete form water-stopping occlusion pile |
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