CN104164871A - Biconcave support-engaged water-stopping pile - Google Patents

Biconcave support-engaged water-stopping pile Download PDF

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Publication number
CN104164871A
CN104164871A CN201410327378.2A CN201410327378A CN104164871A CN 104164871 A CN104164871 A CN 104164871A CN 201410327378 A CN201410327378 A CN 201410327378A CN 104164871 A CN104164871 A CN 104164871A
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pile
concave
interlock
water
seal
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CN104164871B (en
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徐良酉
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DALIAN DAJINMA BASIC CONSTRUCTION Co Ltd
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DALIAN DAJINMA BASIC CONSTRUCTION Co Ltd
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Abstract

The invention discloses a biconcave support-engaged water-stopping pile. The biconcave support-engaged water-stopping pile comprises a pile body and a pile tip. The pile tip is provided with anchor bars and construction bars. The pile body comprises an upper pile section, a middle pile section and a lower pile section. The top of the upper pile section is provided with a pile cap and construction bars. The lower end of the upper pile section is provided with anchor bars. The upper end of the middle pile section is provided with threaded anchor holes. The lower end of the middle pile section is provided with anchor bars. The upper end of the lower pile section is provided with threaded anchor holes. The lower end of the lower pile section is provided with the pile tip. The two sides of the biconcave support-engaged water-stopping pile are respectively of a biconcave shape. The biconcave support-engaged water-stopping pile has the advantages that the bars are evenly distributed through a long-line pedestal in a single mode to tension stress overall, the two sides of the support-engaged water-stopping pile are respectively of the biconcave shape, and spiral stirrups are distributed on the two sides of the support-engaged water-stopping pile; as a result, production on the long-line pedestal can be carried out, labor and efforts are saved, the environment is protected, the productivity is high, product quality is good, the pile can form a tall and straight appearance beneficially, and the beauty and crack resistance are both good; the pile is suitable for stopping water in ports, wharfs and deep foundation pits, and resistant to corrosion and freezing-thawing.

Description

Supporting concave-concave interlock water-seal pile
Technical field
The present invention relates to the realm of building construction, mainly refer to a kind of supporting interlock water-seal pile and construction method thereof.
Background technology
In engineering construction field, along with being on the increase of high level, construction of super highrise building, in civil building engineering and Underground Engineering Excavation field, for in rivers estuary, a large amount of beach, district, groundwater table is higher, intensity is low, compressibilty is higher, the geology such as Muddy Bottoms opaque cohesive soil, a large amount of miscellaneous fill humus soils are major issues for deep pit digging supporting, sealing.Base pit engineering is an ancient tradition, puts the construction method that slope excavation and simple and easy timber are gone along with sb. to guard him, the needs of the Contemporary Architecture that is far from suitable construction, and its construction speed is slow, of poor quality, poor stability, cost is high, pollutes and weighs, waste goods, materials and equipments., in the supporting of subway engineering and highrise building foundation ditch, adopt hole-drilling interlocking pile at present at home and abroad more, though obtain successful experience, at excavation, supporting, how more to save, rapidly and efficiently, rationally in this problem, need to further study, inquire into.The drill-pouring concrete interlocking piles that adopt in current building excavation, support engineering more, although this interlocking pile can meet construction needs to a certain extent, but its difficulty of construction is larger, as many augers of need and a large amount of different bore steel sleeve, there is to very large restriction in stake footpath, the making of reinforcing cage more bothers, and very easily distortion, displacement.In concrete perfusion process, be difficult to control.Meanwhile, required time of concrete coagulation is longer, after interlocking pile pile, easily causes undergauge, spillage, reveals muscle, honeycomb, pitted skin, and main tendon protective layer thickness is difficult to ensure, finally causes leaking.The verticality of interlocking pile is also difficult to reach designing requirement.Reinforcing cage very easily floats in fluid concrete, has a strong impact on workmanship.And in construction underground excavation field, supporting, the sealing of large foundation ditch, because construction speed is too slow, have a strong impact on whole construction work progress, make engineering not expectability complete, cause very large economic loss to enterprise, affect the raising of Business Economic Benefit.
Summary of the invention
For solving the problems of the technologies described above, the invention provides following technical scheme:
In the present invention, supporting concave-concave interlock water-seal pile, is characterized in that, comprises pile body and pile top, and pile top is provided with dowel and structure muscle, and pile body comprises epimere stake, stage casing stake and hypomere stake, and the stake top of epimere stake is provided with pile cover and structure muscle, and the lower end of epimere stake is provided with dowel; The upper end of stage casing stake is provided with screw thread anchor hole, and the lower end of stage casing stake is provided with dowel; The upper end of hypomere stake is provided with screw thread anchor hole, and the hypomere of hypomere stake is provided with pile top; The both sides of described biconvex interlock water-seal pile are double concave.
In the present invention, described concave-concave interlock water-seal pile is prestressing force or half prestressing force or non-prestressed, and inside is solid or hollow, and pile body cross section is square or rectangle, and pile top is concrete or steel.
In the present invention, the pile body both sides of described concave-concave interlock water-seal pile are provided with convex-concave enterprise tenon, and charity reinforcing rib; Described double concave is provided with certain angle, and its enterprise's tenon is oblique.
In the present invention, dowel, distributing bar, pile top are with pile body moulding by casting, and concavo-convex position is provided with the impervious sealing corrosion stability High Pressure Reinforced Concrete perfusion cannula mouth that expands.
In the present invention, described double concave is respectively in symmetrical side or the sides adjacent of biconvex interlock water-seal pile.
In the present invention, described concave-concave water-seal pile also includes edge shape end plate, and described edge shape end plate is metal sheet, and there is the centre bore corresponding with described interlock water-seal pile size center, and the profile of edge shape end plate is identical with described interlock water-seal pile cross section lenticular; On described edge shape end plate along limit the anchor hole of one week even charity respective numbers; The reinforcing bar of described edge shape end plate lower end charity respective numbers.
In the present invention, described concave-concave water-seal pile also includes pile crown plate, and described pile crown plate comprises base plate, is provided with some reinforced holes in the surrounding of base plate, and reinforced hole inner side is provided with pile extension anchor hole, and described base plate is double concave, and upwards roll over the outer of described base plate.
In the present invention, the cross section of described mould is the double concave identical with described interlock water-seal pile cross section.
In the present invention, described recess should be provided with protruding stake and support the use, and projection width is less than recess, projection length is less than recess; With or recess establish reeded stake and support the use with same, and the recess thickness of the two is identical with length, wherein by the interlock of steel concrete sealing or drill-pouring interlock.
In the present invention, on described interlock water-seal pile, can be anchored or the mode such as Plate Welding is carried out pile extension by joint bar, extend pile body length.
In addition, dowel length is less than dowel jack degree of depth 15-25mm.
In pile crown plate, the angle between described base plate and outer is 100-130 degree.
On described interlock water-seal pile, can be anchored or the mode such as Plate Welding is carried out pile extension by joint bar, extend pile body length.
On described interlock water-seal pile, every recessed structures at least one, recessed can be square or rectangle or trapezoidal or triangle or zigzag.
The construction method of the interlocking pile in the present invention, first a lower end face of described interlock water-seal pile, screw thread anchor hole, lower end are anchored to rebar surface and clean up, accumulated water, dry anhydrous after, again described interlock water-seal pile is vertically steadily sling, then insert described interlock water-seal pile position, carry out leveling, vertical, piling construction; In work progress, adjust at any time the horizontal and vertical degree of supporting interlock water-seal pile, reach after standard-required, interlock water-seal pile pile sinking is completed; After pile sinking completes, by two interlock water-seal piles enterprise tenon mouths and gap leveling, vertical, sealing, grouting pipe place is cleaned out, expanding, water-tight concrete pressurization light beam, tenon mouth sealing is looked forward in tight sealing simultaneously.
Wherein, described supporting interlock water-seal pile pile sinking, while needing stake upper end far from ground 1-1.2 rice, first stake upper end is enclosed and pricked rigid plastics cloth along periphery, and colligation is firm, then at supporting interlock water-seal pile upper end pouring dioxygen resin structure glue, when glue is covered with after a top anchor hole, upper stake is vertically steadily sling, make dowel aim at lower piled anchor hole, steadily vertical insertion, leveling, vertical, check and meet after stake, pile sinking completes, and bides one's time curing.
Wherein, first, interlocking pile is vertically steadily sling; Then insert interlocking pile position, carry out leveling, vertical, piling construction, in pile driving process, adjust at any time the verticality of interlocking pile, pinpoint the problems and process in time, first interlocking pile pile sinking completed after reaching standard-required; After pile sinking completes, two interlocking piles, tongue and grooves are poured into, high efficiency composition microlith, mortar concrete tightly seal interlock, and tongue and groove carries out sealing.
Interlock water-seal pile specification:
Above-mentioned specification, can be according to designing requirement, designs production.
In the present invention, described supporting concave-concave interlock water-seal pile, be widely used in the deep foundation pit support interlock sealing in civil building and Underground Engineering Excavation field, have huge development potentiality, interlocking pile campshed safeguards that overall performance is good, supporting intensity is large, sealing, impervious effective, do not need drilling construction, friction, do not need drilling mud practice, construction plant cleaning, pile sinking supporting interlock water-seal pile, current techique is strong, easily control, be convenient to promote, construction safety, fast, can control preferably pile quality, improve pile capacity, horizontal force resistant, anti-dam power is strong, and in pile body, implement the tight interlock of form such as concavo-convex, form the good continuous structure of entirety, and cost is low, construction speed is fast, sealing, impervious.Stake end can enter into the water barrier and the barren land layer that relate to requirement.
Conventional supporting interlock water-seal pile is square, rectangular pile specification
The invention has the beneficial effects as follows: supporting interlock water-seal pile, adopt the even cloth muscle of long-line pedestal single mode, integral tension stress, supporting interlock water-seal pile two sides is lenticular, and charity spiral stirrup.Can produce by long line platform, saving of labor, laborsaving, environmental protection, productivity ratio is high, and good product quality contributes to the profile that product formation is tall and straight, and aesthetic property and crack resistance are all good.Be adapted to port and pier, water seal for deep foundation pit, anticorrosive, freeze proof dissolving.
Brief description of the drawings
Fig. 1 is supporting concave-concave interlock water-seal pile masterplate figure of the present invention;
Fig. 2 is supporting concave-concave interlock water-seal pile pile body schematic cross-section;
Fig. 3 is the arrangement of reinforcement schematic diagram of supporting concave-concave interlock water-seal pile;
Fig. 4 is supporting concave-concave interlock water-seal pile steel pile tip schematic diagram;
Fig. 5 is supporting concave-concave interlock water-seal pile steel pile tip AA schematic diagram;
Fig. 6 is the arrangement of reinforcement schematic diagram of hypomere stake;
Fig. 7 is the arrangement of reinforcement schematic diagram of epimere stake;
Fig. 8 is the mode host visual pattern of supporting concave-concave interlock water-seal pile, and wherein concave-concave is symmetrical; ;
Fig. 9 is the mode host visual pattern of supporting concave-concave interlock water-seal pile, and wherein concave-concave is adjacent;
Figure 10 is pile crown plate top view;
Figure 11 is pile crown plate front elevation drawing;
Figure 12 is pile crown plate right view;
Figure 13 is the top view of edge shape end plate;
Figure 14 is concavo-convex cooperation schematic diagram;
Figure 15 is the recessed schematic diagram of rectangle triangle;
Figure 16 is the recessed schematic diagram of rectangle sawtooth;
Figure 17 is tabular concavo-convex cooperation schematic diagram;
Figure 18 is the pile body schematic cross-section of interlock water-seal pile; Wherein one side concave-concave, two sides symmetry;
Figure 19 is the pile body schematic cross-section of interlock water-seal pile; Wherein one side concave-concave, two sides is adjacent.
Wherein, 1 is anchor hole; 2 for being anchored muscle; 3 is dowel; 4 is anchor hole; 5 is structure muscle; 6 is back-grouting hole; 7 is Bower Anchor muscle; 8 is main muscle jack.
Detailed description of the invention
embodiment 1
Prestressing force supporting concave-concave interlock water-seal pile, comprises pile body and pile top, and pile top is provided with dowel and structure muscle, and pile body comprises epimere stake, stage casing stake and hypomere stake, and the stake top of epimere stake is provided with pile cover and structure muscle, and the lower end of epimere stake is provided with dowel; The upper end of stage casing stake is provided with screw thread anchor hole, and the lower end of stage casing stake is provided with dowel; The upper end of hypomere stake is provided with screw thread anchor hole, and the hypomere of hypomere stake is provided with pile top; Dowel length is less than dowel jack degree of depth 20mm; The both sides of described concave-concave interlock water-seal pile are double concave; Described concave-concave interlock water-seal pile is solid, and pile body cross section is square, steel pile tip.Pile body both sides are provided with convex-concave enterprise tenon, and charity reinforcing rib.Described double concave is provided with certain angle, and its enterprise's tenon is oblique.Described double concave is respectively in the symmetrical side of concave-concave interlock water-seal pile.Dowel, distributing bar, pile top are with pile body moulding by casting, and concavo-convex position is provided with the impervious sealing anticorrosive concrete high pressure pouring conduit mouth that expands.
Described recess should be provided with protruding stake and support the use, and projection width is less than recess, projection length is less than recess.
On described interlock water-seal pile, carry out pile extension by joint bar anchor mode, extend pile body length.
Edge shape end plate, described edge shape end plate is metal sheet, and there is the centre bore corresponding with described interlock water-seal pile size center, and the profile of edge shape end plate is the double concave identical with described interlock water-seal pile cross section; On described edge shape end plate along limit the anchor hole of one week even charity respective numbers; The reinforcing bar of described edge shape end plate lower end charity respective numbers, the quantity of described reinforcing bar is 3 layers, every layer can be 4.
Pile crown plate, comprises base plate, is provided with some reinforced holes in the surrounding of base plate, and reinforced hole inner side is provided with pile extension anchor hole, and described base plate is double concave, and upwards roll over the outer of described base plate, and the angle between described base plate and outer is 100 degree.
Described in the mould of supporting concave-concave interlock water-seal pile, the cross section of mould is the double concave identical with described interlock water-seal pile cross section.
Described recess should be provided with protruding stake, support the use, and projection width is less than recess, projection length is less than recess.
On described interlock water-seal pile, be anchored and carry out pile extension by joint bar, extend pile body length.
On described interlock water-seal pile, every recessed one, recessed can be square.
The construction method of supporting concave-concave interlock water-seal pile, first a lower end face of described interlock water-seal pile, screw thread anchor hole, lower end are anchored to rebar surface and clean up, accumulated water, dry anhydrous after, again described interlock water-seal pile is vertically steadily sling, then insert described interlock water-seal pile position, carry out leveling, vertical, piling construction; In work progress, adjust at any time the horizontal and vertical degree of supporting interlock water-seal pile, reach after standard-required, interlock water-seal pile pile sinking is completed; After pile sinking completes, by two interlock water-seal piles enterprise tenon mouths and gap leveling, vertical, sealing, grouting pipe place is cleaned out, expanding, water-tight concrete pressurization light beam, tenon mouth sealing is looked forward in tight sealing simultaneously.
Described supporting interlock water-seal pile pile sinking, need stake upper end, first stake upper end is enclosed and pricked rigid plastics cloth along periphery, and colligation to be firm 1 meter time far from ground, then at supporting interlock water-seal pile upper end pouring dioxygen resin structure glue, when glue is covered with after a top anchor hole, upper stake is vertically steadily sling, and makes dowel aim at lower piled anchor hole, steadily vertical insertion, leveling, vertical, inspection meets after stake, and pile sinking completes, and bides one's time curing.
Embodiment 2
Non-prestressed supporting concave-concave interlock water-seal pile, comprises pile body and pile top, and pile top is provided with dowel and structure muscle, and pile body comprises epimere stake, stage casing stake and hypomere stake, and the stake top of epimere stake is provided with pile cover and structure muscle, and the lower end of epimere stake is provided with dowel; The upper end of stage casing stake is provided with screw thread anchor hole, and the lower end of stage casing stake is provided with dowel; The upper end of hypomere stake is provided with screw thread anchor hole, and the hypomere of hypomere stake is provided with steel pile tip; Dowel length is less than dowel jack degree of depth 25mm; The both sides of described concave-concave interlock water-seal pile are double concave; Described concave-concave interlock water-seal pile is hollow, and pile body cross section is rectangle.The pile body both sides of described concave-concave interlock water-seal pile are provided with convex-concave enterprise tenon, and charity reinforcing rib.Described double concave is provided with certain angle, and its enterprise's tenon is oblique.Described double concave is respectively in the sides adjacent of concave-concave interlock water-seal pile, and pile top is steel.Dowel, distributing bar, pile top are with pile body moulding by casting.Concavo-convex position is provided with expansion impervious anticorrosion sealing High Pressure Reinforced Concrete perfusion cannula mouth.
Described recess should be established reeded stake and supports the use with same, and the recess thickness of the two is identical with length, wherein by the interlock of steel concrete sealing or drill-pouring interlock.
On described interlock water-seal pile, carry out pile extension by Plate Welding mode, extend pile body length.
Also include edge shape end plate, described edge shape end plate is metal sheet, and there is the centre bore corresponding with described interlock water-seal pile size center, and the profile of edge shape end plate is the double concave identical with described interlock water-seal pile cross section; On described edge shape end plate along limit the anchor hole of one week even charity respective numbers; The reinforcing bar of described edge shape end plate lower end charity respective numbers, the quantity of described reinforcing bar is 5 layers, every layer can be 5.
Described concave-concave water-seal pile also includes pile crown plate, comprises base plate, is provided with some reinforced holes in the surrounding of base plate, reinforced hole inner side is provided with pile extension anchor hole, described base plate is double concave, and upwards roll over the outer of described base plate, and the angle between described base plate and outer is 130 degree.
The cross section of described mould is the double concave identical with described interlock water-seal pile cross section.
Described in the mould of supporting concave-concave interlock water-seal pile, the cross section of mould is the double concave identical with described interlock water-seal pile cross section.
Described recess should be provided with protruding stake, support the use, and projection width is less than recess, projection length is less than recess.
On described interlock water-seal pile, carry out pile extension by Plate Welding, extend pile body length.
On described interlock water-seal pile, two of every recessed structures, recessed is triangle.
Construction method, first a lower end face of described interlock water-seal pile, screw thread anchor hole, lower end are anchored to rebar surface and clean up, accumulated water, dry anhydrous after, more described interlock water-seal pile is vertically steadily sling, then insert described interlock water-seal pile position, carry out leveling, vertical, piling construction; In work progress, adjust at any time the horizontal and vertical degree of supporting interlock water-seal pile, reach after standard-required, interlock water-seal pile pile sinking is completed; After pile sinking completes, by two interlock water-seal piles enterprise tenon mouths and gap leveling, vertical, sealing, grouting pipe place is cleaned out, expanding, water-tight concrete pressurization light beam, tenon mouth sealing is looked forward in tight sealing simultaneously.
Wherein, described supporting interlock water-seal pile pile sinking, needs stake upper end far from ground 1.2 meters time, first stake upper end is enclosed and pricked rigid plastics cloth along periphery, and colligation is firm, then at supporting interlock water-seal pile upper end pouring dioxygen resin structure glue, when glue is covered with after a top anchor hole, upper stake is vertically steadily sling, make dowel aim at lower piled anchor hole, steadily vertical insertion, leveling, vertical, check and meet after stake, pile sinking completes, and bides one's time curing.
Wherein, first, interlocking pile is vertically steadily sling; Then insert interlocking pile position, carry out leveling, vertical, piling construction, in pile driving process, adjust at any time the verticality of interlocking pile, pinpoint the problems and process in time, first interlocking pile pile sinking completed after reaching standard-required; After pile sinking completes, two interlocking piles, tongue and grooves are poured into, high efficiency composition microlith, mortar concrete tightly seal interlock, and tongue and groove carries out sealing.
The above; it is only preferably detailed description of the invention of the present invention; but protection scope of the present invention is not limited to this; any be familiar with those skilled in the art the present invention disclose technical scope in; be equal to replacement or changed according to technical scheme of the present invention and inventive concept thereof, within all should being encompassed in protection scope of the present invention.

Claims (10)

1. supporting concave-concave interlock water-seal pile, is characterized in that, comprises pile body and pile top, and pile top is provided with dowel and structure muscle, and pile body comprises epimere stake, stage casing stake and hypomere stake, and the stake top of epimere stake is provided with steel pile cover and structure muscle, and the lower end of epimere stake is provided with dowel; The upper end of stage casing stake is provided with screw thread anchor hole, and the lower end of stage casing stake is provided with dowel; The upper end of hypomere stake is provided with screw thread anchor hole, and the hypomere of hypomere stake is provided with pile top; The both sides of described concave-concave interlock water-seal pile are double concave; Described concave-concave interlock water-seal pile is prestressing force or half prestressing force or non-prestressed, and inside is solid or hollow, and pile body cross section is square or rectangle, and pile top is concrete or steel; Described double concave is respectively in symmetrical side or the sides adjacent of concave-concave interlock water-seal pile.
2. supporting concave-concave interlock water-seal pile according to claim 1, is characterized in that: the pile body both sides of described concave-concave interlock water-seal pile are provided with convex-concave enterprise tenon, and charity reinforcing rib; Described double concave is provided with certain angle, and its enterprise's tenon is oblique.
3. supporting concave-concave interlock water-seal pile according to claim 1, is characterized in that: dowel, distributing bar, pile top are with pile body moulding by casting, and concavo-convex position is provided with the impervious sealing corrosion stability High Pressure Reinforced Concrete perfusion cannula mouth that expands.
4. supporting concave-concave interlock water-seal pile according to claim 1, it is characterized in that: described concave-concave water-seal pile also includes edge shape end plate, described edge shape end plate is metal sheet, there is the centre bore corresponding with described interlock water-seal pile size center, and the profile of edge shape end plate is the double concave identical with described interlock water-seal pile cross section; On described edge shape end plate along limit the anchor hole of one week even charity respective numbers; The reinforcing bar of described edge shape end plate lower end charity respective numbers.
5. supporting concave-concave interlock water-seal pile according to claim 1, it is characterized in that: described concave-concave water-seal pile also includes pile crown plate, described pile crown plate comprises base plate, be provided with some reinforced holes in the surrounding of base plate, reinforced hole inner side is provided with pile extension anchor hole, described base plate is double concave, and upwards roll over the outer of described base plate.
6. the mould of supporting concave-concave interlock water-seal pile according to claim 1, is characterized in that: the cross section of described mould is the double concave identical with described interlock water-seal pile cross section.
7. supporting concave-concave interlock water-seal pile according to claim 1, is characterized in that: described recess should be provided with protruding stake and support the use, and projection width is less than recess, projection length is less than recess; With or recess establish reeded stake and support the use with same, and the recess thickness of the two is identical with length, wherein by the interlock of steel concrete sealing or drill-pouring interlock.
8. supporting concave-concave interlock water-seal pile according to claim 1, is characterized in that: on described interlock water-seal pile, can be anchored or the mode such as Plate Welding is carried out pile extension by joint bar, extend pile body length.
9. supporting concave-concave interlock water-seal pile according to claim 1, is characterized in that: on described interlock water-seal pile, every recessed structures at least one, recessed can be square or rectangle or trapezoidal or triangle or zigzag.
10. the construction method of supporting concave-concave interlock water-seal pile according to claim 1, it is characterized in that: first a lower end face of described interlock sealing square pile, screw thread anchor hole, lower end are anchored to rebar surface and clean up, accumulated water, dry anhydrous after, again described interlock sealing square pile is vertically steadily sling, then insert described interlock sealing square pile position, carry out leveling, vertical, piling construction; In work progress, adjust at any time the horizontal and vertical degree of supporting interlock sealing square pile, reach after standard-required, interlock sealing square sunk pile is completed; After pile sinking completes, by two interlock sealing square piles enterprise tenon mouths and gap leveling, vertical, sealing, grouting pipe place is cleaned out, expanding, water-tight concrete pressurization light beam, tenon mouth sealing is looked forward in tight sealing simultaneously; Described supporting interlock sealing square sunk pile, while needing stake upper end far from ground 1-1.2 rice, first stake upper end is enclosed and pricked rigid plastics cloth along periphery, and colligation is firm, then at supporting interlock sealing square pile upper end pouring dioxygen resin structure glue, when glue is covered with after a top anchor hole, upper stake is vertically steadily sling, and makes dowel aim at lower piled anchor hole, steadily vertical insertion, leveling, vertical, inspection meets after stake, and pile sinking completes, and bides one's time curing.
CN201410327378.2A 2014-07-10 2014-07-10 The constructional method of the two recessed occlusion water-seal pile of supporting Active CN104164871B (en)

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CN104863120A (en) * 2015-05-13 2015-08-26 中国建筑第八工程局有限公司 Occlusive pile construction method and prefabricated occlusive piles used for method
CN105862876A (en) * 2016-05-19 2016-08-17 邱树贵 Concrete continuous pile, concrete continuous pile wall and construction method of concrete continuous pile wall

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