CN104532851B - Recycling assembling type double-row pile and supporting method thereof - Google Patents

Recycling assembling type double-row pile and supporting method thereof Download PDF

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Publication number
CN104532851B
CN104532851B CN201410784923.0A CN201410784923A CN104532851B CN 104532851 B CN104532851 B CN 104532851B CN 201410784923 A CN201410784923 A CN 201410784923A CN 104532851 B CN104532851 B CN 104532851B
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China
Prior art keywords
campshed
pile
stake
drag link
row
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CN201410784923.0A
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CN104532851A (en
Inventor
姚爱军
周君
周一君
王强
翟玉新
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Beijing University of Technology
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Beijing University of Technology
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00Excavations; Bordering of excavations; Making embankments
    • E02D17/02Foundation pits
    • E02D17/04Bordering surfacing or stiffening the sides of foundation pits
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22Piles
    • E02D5/34Concrete or concrete-like piles cast in position ; Apparatus for making same
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22Piles
    • E02D5/50Piles comprising both precast concrete portions and concrete portions cast in situ

Abstract

The invention belongs to the field of civil engineering, and relates to a recycling assembling type double-row pile and a supporting method thereof. Pile caps (4) are preset on the tops of front-row pile bodies (1), and the front-row pile bodies (1) are connected through a crown beam (2). The front-row pile bodies (1) and rear-row pile bodies (3) are connected through two pull rods (6), and the rear-row pile bodies (3) are connected through a lock connector (7). The two pull rods (6) are connected through a lock connector (7). The pile caps (4) and the pull rods (6) are connected through pin shafts (10), and pull rod sleeves (5) and the pull rods (6) are connected through pin shafts (10). Lock pins are inserted in lock holes (11) to prevent the pull rod sleeves (5) from longitudinally moving. The integrity of the supporting structure is improved, more cost is saved, economic benefits are increased, the construction time is shortened, and the safety coefficient of surrounding buildings during foundation pit construction is increased.

Description

A kind of recovery assembled double-row pile and method for protecting support thereof
Technical field
The invention belongs to engineering construction technology field, be mainly used in closing on important building and risk is bigger Deep Foundation Pit Supporting Project.
Background technology
In the Excavation Process of city, owing to foundation ditch periphery exists many existing buildings, and building basis Relatively deep, so not allowing to put slope excavation, in order to ensure stable, the horizontal position of the restriction foundation ditch periphery soil body of foundation ditch Moving and sedimentation, it is necessary to use suitable foundation pit support plan, in practice, general conventional foundation pit supporting method includes: (1) campshed Prestressing anchorage cable method.I.e. first lay a placing of reinforcement concrete-pile, then substep at foundation ditch periphery The excavation soil body, Shi Hanzhang anchor cable at projected depth, limit the horizontal displacement of hole Zhou Tuti.(2) campshed Add inner support method.I.e. first lay placing of reinforcement concrete-pile, then a step excavation soil body at foundation ditch periphery, setting Meter depth applies bracing members, limits the horizontal displacement of hole Zhou Tuti.(3) double-row pile method.I.e. at foundation ditch periphery Successively lay the reinforced concrete pile of the two suitable spacing of row, and connected by Guan Liang and coupling beam, formed with inter-pile soil The overall soil-baffling structure that rigidity is bigger, limits the horizontal displacement of hole Zhou Tuti.
Three of the above foundation pit support plan, all has respective limitation and deficiency: (1st) plants campshed adds pre-answering Power anchorage cable method, it is desirable to surrounding building basis can not be too deep, and otherwise anchor cable cannot be constructed;(2nd) plants campshed Adding inner support method, campshed needs to carry out cast in situs molding.Inner support requires sleeve configuration foundation ditch, applies bracing members Direction can not be the widest, otherwise bracing members amount of deflection is too big, and efficiency of construction is relatively low;(3rd) plants double-row pile method, Needing cast in situs two row, non-assembled, the engineering time is longer, and material can not reclaim and relatively waste.
Summary of the invention:
This method, based on double-row pile method, uses assembled, is a set of mainly for closing on building foundation relatively Deeply, the foundation pit supporting method that periphery geological condition is complicated, mainly solve techniques below problem: (1) double-row pile Assembled building technology.By arranging drag link sleeve, pull bar, latching connector, front campshed is made to be connected group with rear campshed Fill integral, and conveniently rear campshed is dismantled.(2) recovery technology of coupling beam and rear campshed is solved.Base Hole excavation, to be onstructed proceed to ± 0 after rear campshed (steel-pipe pile), drag link sleeve, pull bar, latching connector are carried out Reclaim, treat that construction next time still is able to use apparatus above.
Therefore, use this method to carry out pattern foundation pit supporting structure, can increase the globality of supporting construction, and more supernumerary segment About cost, increases economic efficiency, and effectively shortens the engineering time, surrounding building during increase foundation pit construction Safety coefficient.
The present invention uses following technological means:
A kind of reclaim assembled double-row pile, it include front campshed 1, front-seat dowel crown beam 2, rear campshed 3, pile cover 4, Drag link sleeve 5, pull bar 6, latching connector 7, steel reinforcement cage 8, skin of paint 9, bearing pin 10, lockhole 11;
Pile cover 4 is preset on front campshed 1 top, connects with hat beam 2 between front campshed 1.Front campshed 1 and rear campshed 3, after Connect with two pull bars 6 and a latching connector 7 respectively between campshed 3, wherein by an interlocking between two pull bars 6 7 connect;Drag link sleeve 5 is preset on rear campshed 3 top;Pile cover 4 all uses bearing pin with pull bar 6, drag link sleeve 5 with pull bar 6 10 connect, and lockhole 11 inserts lock pin and prevents drag link sleeve 5 from vertically moving;Skin of paint 9 is coated in the surface of rear campshed 3.
Described front campshed 1 is cast-in-place concrete pile;Described rear campshed 3 is steel-pipe pile;
A kind of recovery assembled double-row pile of the present invention, Specific construction step is as follows: at the foundation ditch intending excavation Periphery lays double-row pile, and wherein front campshed 1 is cast-in-place concrete pile, and rotary drilling rig pore-forming, stake footpath is 600-1000mm, pile spacing 2d-3d, d are stake footpath;Rear campshed 3 is steel-pipe pile, and stake footpath is 600mm, between stake Long away from, stake and front campshed is identical.Rear campshed 3 uses rig pore-forming in advance, after penetration concrete, is coated with by pile body The steel-pipe pile smearing 3 5mm heat-bodied oil paints 9 inserts in hole, campshed after formation.
Front campshed 1 is 2d-3d with rear campshed 3 array pitch.Pile cover 4 is preset on front campshed 1 top, uses Guan Liang between front campshed 1 2 connect, concreting molding.Lockhole 11 is reserved on rear campshed top, and drag link sleeve 5 is preset on stake top;Front campshed 1 with Connect with two pull bars 6 and a latching connector 7 between rear campshed 3 and rear campshed 3, formed recyclable, can assemble , stable Retaining Structure with Double-row Piles.
Excavation of foundation pit, to be onstructed proceed to ± 0 after, campshed 3, drag link sleeve 5, pull bar 6, latching connector after recovery 7;After extracting, the stake holes of campshed 3 is tamped after inserting sandstone again.
The present invention, by arranging drag link sleeve, pull bar, latching connector, makes front campshed assemble into one with rear campshed whole Body, and conveniently rear campshed is dismantled, treat that construction next time still is able to use apparatus above.The present invention can increase The globality of big supporting construction, and more cost-effective, increase economic efficiency, effectively shorten the engineering time, The safety coefficient of surrounding building during increase foundation pit construction.
Accompanying drawing illustrates:
The top view of Fig. 1 present configuration;
Fig. 2 1-1 profile;
Fig. 3 2-2 profile;
Fig. 4 3-3 profile;
In figure: 1. campshed before, 2. front-seat dowel crown beam, 3. after campshed, 4. pile cover, 5. drag link sleeve, 6. pull bar, 7. latching connector, 8. steel reinforcement cage, 9. skin of paint, 10. bearing pin, 11. lockholes.
Detailed description of the invention:
With detailed description of the invention, the present invention is further described below in conjunction with the accompanying drawings:
A kind of reclaim assembled double-row pile, it include front campshed 1, front-seat dowel crown beam 2, rear campshed 3, pile cover 4, Drag link sleeve 5, pull bar 6, interlocking 7, steel reinforcement cage 8, skin of paint 9, bearing pin 10, lockhole 11;
Pile cover 4 is preset on front campshed 1 top, connects with hat beam 2 between front campshed 1.Front campshed 1 and rear campshed 3, after Connect with two pull bars 6 and a latching connector 7 respectively between campshed 3, wherein by an interlocking between two pull bars 6 7 connect.Pile cover 4 is all connected with bearing pin 10 with pull bar 6 with pull bar 6, drag link sleeve 5, and lockhole 11 inserts lock pin to be prevented Only drag link sleeve 5 vertically moves;
Described front campshed 1 is cast-in-place concrete pile;Described rear campshed 3 is steel-pipe pile;
A kind of recovery assembled double-row pile of the present invention, Specific construction step is as follows: at the foundation ditch intending excavation Periphery lays double-row pile, and wherein front campshed 1 is cast-in-place concrete pile, and rotary drilling rig pore-forming, stake footpath is 600-1000mm, pile spacing 2d-3d, d are stake footpath;Rear campshed 3 is steel-pipe pile, and stake footpath is 600mm, between stake Long away from, stake and front campshed is identical.Rear campshed 3 uses rig pore-forming in advance, after penetration concrete, is coated with by pile body The steel-pipe pile smearing 3 5mm heat-bodied oil paints 9 inserts in hole, campshed after formation.
Front campshed 1 is 2d-3d with rear campshed 3 array pitch.Pile cover 4 is preset on front campshed 1 top, uses Guan Liang between front campshed 1 2 connect, concreting molding.Lockhole 11 is reserved on rear campshed top, and drag link sleeve 5 is preset on stake top;Front campshed 1 with Connect with two pull bars 6 and a latching connector 7 between rear campshed 3 and rear campshed 3, formed recyclable, can assemble , stable Retaining Structure with Double-row Piles.
Excavation of foundation pit, to be onstructed proceed to ± 0 after, reclaim steel-pipe pile 3, drag link sleeve 5, pull bar 6, latching connector 7;Tamp again after the stake holes extracting steel-pipe pile 3 inserts sandstone.

Claims (2)

1. one kind is reclaimed assembled double-row pile, it is characterised in that: it includes front campshed (1), front-seat dowel crown beam (2), rear campshed (3), pile cover (4), drag link sleeve (5), pull bar (6), latching connector (7), steel reinforcement cage (8), Skin of paint (9), bearing pin (10), lockhole (11);
Pile cover (4) is preset on front campshed (1) stake top, connects with Guan Liang (2) between front campshed (1);Front-seat Stake between (1) and rear campshed (3), rear campshed (3) respectively with two pull bars (6) and a latching connector (7) Connect, wherein connected by a latching connector (7) between two pull bars (6);Rear campshed (3) stake top is preset Drag link sleeve (5), pile cover (4) and pull bar (6), drag link sleeve (5) and pull bar (6) are all with bearing pin (10) Connecting, lockhole (11) inserts lock pin and prevents drag link sleeve (5) from vertically moving;Skin of paint (9) is coated in rear campshed (3) surface;Described front campshed (1) is cast-in-place concrete pile;Described rear campshed (3) is steel pipe Stake.
A kind of recovery assembled double-row pile the most according to claim 1, it is characterised in that: Specific construction walks It is rapid as follows: laying double-row pile at the foundation ditch periphery intending excavation, wherein front campshed (1) is cast-in-place concrete pile, Rotary drilling rig pore-forming, stake footpath is 600-1000mm, and pile spacing 2d-3d, d are stake footpath;Rear campshed (3) is steel Pile tube, stake footpath is 600mm, and pile spacing, stake are long and front campshed is identical;Rear campshed (3) uses rig in advance Pore-forming, after penetration concrete, the steel-pipe pile that pile body is smeared 3 5mm heat-bodied oil enamelled coating (9) inserts in hole, Campshed after formation;
Front campshed (1) and rear campshed (3) array pitch are 2d-3d;Pile cover (4) is preset on front campshed (1) top, front Connect with Guan Liang (2) between campshed (1), concreting molding;Lockhole (11) is reserved on rear campshed top, Drag link sleeve (5) is preset on stake top;With two between front campshed (1) and rear campshed (3) and rear campshed (3) Pull bar (6) and a latching connector (7) connect, and form recyclable, assembling, stable Double-row Piles Support Structure;
Excavation of foundation pit, to be onstructed proceed to+0 after, campshed (3) after recovery, drag link sleeve (5), pull bar (6), Latching connector (7);After extracting, the stake holes of campshed (3) is tamped after inserting sandstone again.
CN201410784923.0A 2014-12-17 2014-12-17 Recycling assembling type double-row pile and supporting method thereof Active CN104532851B (en)

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CN106223344B (en) * 2016-07-26 2018-07-13 北京工业大学 A kind of ground line piled anchor frame foundation pit supporting method
CN106284272B (en) * 2016-10-08 2019-03-22 江苏省交通工程集团有限公司 Fore shaft grouting steel tube pile guide wall and construction method
CN110080206A (en) * 2019-05-07 2019-08-02 中国核电工程有限公司 Recoverable spiral double-row pile and its recovery method
CN111576435A (en) * 2020-04-17 2020-08-25 中建五局第三建设有限公司 Construction method and structure of column control slip surface of inter-pile soil steel structure
CN111648378A (en) * 2020-06-16 2020-09-11 深圳市勘察测绘院(集团)有限公司 Square-round pile combined foundation pit supporting method

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CN201232180Y (en) * 2008-07-22 2009-05-06 大连三川建设集团股份有限公司 Novel sheet-pile wall
KR101095700B1 (en) * 2009-09-16 2011-12-20 박강호 Retaining Wall Structure and Constructing Method thereof
CN102116028B (en) * 2011-01-13 2012-05-23 中建四局第三建筑工程有限公司 Method and structure for excavating soil in core tube region based on raft pile supporting
CN102383435B (en) * 2011-09-28 2015-06-10 中铁大桥局集团有限公司 High-fall levee double-row piles
CN103088831A (en) * 2013-01-24 2013-05-08 东南大学 Overall assembly-type double-row steel pile foundation pit supporting structure
CN203855970U (en) * 2014-05-15 2014-10-01 江苏鼎达建筑新技术有限公司 Assembly type foundation pit supporting double-row hollow pile structure

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