CN201217801Y - Prestressed concrete side-assist pressing enhancement type precast pile - Google Patents

Prestressed concrete side-assist pressing enhancement type precast pile Download PDF

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Publication number
CN201217801Y
CN201217801Y CNU2007201264695U CN200720126469U CN201217801Y CN 201217801 Y CN201217801 Y CN 201217801Y CN U2007201264695 U CNU2007201264695 U CN U2007201264695U CN 200720126469 U CN200720126469 U CN 200720126469U CN 201217801 Y CN201217801 Y CN 201217801Y
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China
Prior art keywords
pile
stake
premoulded
prestressed concrete
diameters
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Expired - Fee Related
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CNU2007201264695U
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Chinese (zh)
Inventor
王家毅
潘希柏
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Individual
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Individual
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Priority to CNU2007201264695U priority Critical patent/CN201217801Y/en
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Publication of CN201217801Y publication Critical patent/CN201217801Y/en
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Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a prestressed concrete side auxiliary compression enhanced type premoulded pile which is provided with a pile body and a pile hole (3). The enhanced type premoulded pile is characterized in that the surface of the pile is formed by the way that major diameters (2) and minor diameters (1) are arranged at intervals along the axial direction. Two ends of the pile can be the minor diameters (1) and also the major diameters (2). The section of the pile can be a circle, a square, a rectangle or a polygon. Because the roughness formed by the minor diameters and the major diameters solves the phenomenon that a lifting rope easily surges, the construction accident caused by that the lifting rope easily surges is avoided, the safety of the pile and builders is ensured, and the loss caused by the construction accident is eliminated. The enhanced type premoulded pile reduces the contact area of the surface of the over 1/2 pile body and the soil body, reduces the friction resistance in the process of sinking the pile, lowers the pile following force needed by sinking the pile through a pile follower at the same proportion, completely avoids the phenomenon that the pile body is damaged, and greatly enlarges the engineering application field of the premoulded pile.

Description

The auxilliary enhancement mode preformed pile of pressing of prestressed concrete side
Technical field
The utility model relates to the auxilliary enhancement mode preformed pile of pressing of a kind of prestressed concrete side of using in structure foundation is handled.
Background technology
At present, preformed pile is smooth cylinder, square or gengon etc. in country and each department standard collective drawings, and the technical problem that these preformed piles exist mainly shows:
1, on hanging stake in the machine process, the colligation rope is slippage in smooth stake table easily, and construction and security incident easily take place, and causes heavy losses.
2, in the piling construction process, the stake machine clamp is easy to generate slippage, causes constructional difficulties, delays the pile sinking progress.
3, in the piling construction process, whole stake surface all produces friction with the soil body, has increased penetrating resistance, and the stake machine need provide very big operating pressure and satisfy pile follower, brings influence to piling construction.When frictional resistance bears when embracing folder power greater than the pile body maximum, then can't continue to finish pile sinking, even destroy pile body.
4, in the piling construction process, finish piling construction owing to need bigger operating pressure, the stressed meeting of preformed pile reaches every threshold, it is destroyed pile sinking difficulty or pile body to occur, increase cost, the influence construction delays programming, do not reach preformed pile design instructions for use etc., limited the range of application of preformed pile.
5, when adopting the friction side mode of holding to use pile tube, owing to reasons such as smooth stake surfaces, when not reaching the design instructions for use with its frictional resistance of long size preformed pile, it is long to increase the pile sinking stake, and cost is increased.
Also have, more than the antidetonation resistance to plucking effect of these preformed piles poor, face shaping is single.
Summary of the invention
The utility model is exactly for solving the deficiencies in the prior art, providing a kind of prestressed concrete side little with soil body frictional force on piling construction process king-pile surface, that can avoid a machine piling construction process king-pile machine clamp sliding phenomenon and pile body to be damaged the auxilliary enhancement mode preformed pile of pressing.
The technical solution that realizes above-mentioned purpose is:
The surface of this preformed pile axially is spaced by major diameter and minor diameter along it.
Its further technical scheme is:
The two ends of stake both can be minor diameter, also can be major diameter.
The section of stake can be circular, square, rectangle or polygon.
The good effect that the utility model produced is:
The tongue and groove that male and fomale(M﹠F) forms has solved the eely phenomenon of hoist cable, and the construction accident of avoiding the easy slippage of hoist cable to cause is guaranteed stake and constructor's safety, stops the loss that this type of accident causes.
Reduce the contact area of the 1/2 above pile body surface and the soil body, compare with conventional stake, reduce the frictional resistance of pile driving process again, also reduced the needed pile follower power of stake machine pile sinking in proportion, avoid the ruined phenomenon of pile body fully, enlarged preformed pile engineering application greatly.
Because the concave-convex design on stake surface, provided a blocking surface at bossing, can stop the slippage of a machine clamp, create new side resistance stress point, the auxiliary pile machine clamp is embraced folder power and is carried out piling construction, avoids relying on fully increase and embraces folder power in proportion and carry out pile sinking, increases secondary side resistance stress point, stop the appearance of the destroyed threshold of preformed pile, avoid preformed pile destroyed.
The concave-convex design on stake surface mainly is to have reduced the contact area of stake surface with the soil body, reduced the frictional resistance in the piling construction process, obtained good piling construction condition, having reduced pile sinking needs given operating pressure, makes given also corresponding reduction of pile follower power that embraces folder power and secondary side resistance.
The concave-convex design on stake surface can finish soil structures behind over recovery at pile sinking, forms the vertical shearing power of the soil body, has increased the frictional resistance of preformed pile, has obviously improved the supporting effect of preformed pile.
Circle, square, rectangle or polygon square can also be made in the stake surface, and the two ends of stake are major diameter both, also can be minor diameter, can provide selection on the type to the user.
Because the increase of the power of carrying, the consumption of stake can be corresponding be reduced in the construction plant, pile spacing amplifies, the stake quilt that faces of effectively avoiding soil compaction effect and causing squeezes a phenomenon and generation biased moving and the out of use situation of stake askew, that squeeze off, side by side the cushion cap of foundation pile is also corresponding reduces, and has saved the total cost that ground need drop into.
Because the pile sinking difficulty in the preformed pile pile driving process, pile body is destroyed and do not reach when use detecting and carry the power effect and force change to use the design scheme of preformed pile in a lot of in the past case histories.And this preformed pile will obtain very large-scale applying, and owing to the preformed pile that above reason causes need not be done change in design, can use manpower and material resources sparingly greatly and the piling construction duration, directly reduces engineering cost.
The production of this type only needs to carry out on original preformed pile manufacturing enterprise production equipment basis, does not need to change the factory building layout, augments large number quipments, only needs to use the particular manufacturing craft of this type to produce.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
Fig. 2 is the structural representation of the utility model the 2nd embodiment.
Fig. 3 is the A-A sectional view of Fig. 1 and Fig. 2.
Fig. 4 is the section structure schematic diagram of the utility model the 3rd embodiment.
Fig. 5 is the section structure schematic diagram of the utility model the 4th embodiment.
The specific embodiment
As shown in Figure 1, the said preformed pile of the utility model mainly is that major diameter 2 and minor diameter 1 spaced shape are axially made along it in the surface of stake, and the two ends of its king-pile are minor diameter 1.
As shown in Figure 2, this preformed pile also can axially be made major diameter 2 and minor diameter 1 spaced shape along it with the surface of stake, and the two ends of its king-pile are major diameter 2.
Fig. 3 has shown the section shape of A-A among Fig. 1, Fig. 2, is the stake hole 3 that forms in the centrifugal prefabricated process in the axial centre of stake.
The section of this preformed pile also can be made into barrette and the hexagon stake that shows as Fig. 4, Fig. 5, also axially makes major diameter 2 and minor diameter 1 spaced shape along it on its surface.
Certainly, the surface of this preformed pile is not limited to above form, also can be as required and design in addition, but the protection domain that all belongs to this patent that is provided with at interval by size diameter.

Claims (4)

1, the auxilliary enhancement mode preformed pile of pressing of a kind of prestressed concrete side, it has pile body and stake hole (3), it is characterized in that the surface of stake axially is spaced by major diameter (2) and minor diameter (1) along it.
2, the auxilliary enhancement mode preformed pile of pressing of a kind of prestressed concrete side is characterized in that the two ends of stake are minor diameter (2).
3, the auxilliary enhancement mode preformed pile of pressing of a kind of prestressed concrete side is characterized in that the two ends of stake are major diameter (1).
4, the auxilliary enhancement mode preformed pile of pressing of a kind of prestressed concrete side, the section that it is characterized in that stake is circular, square, rectangle or polygon.
CNU2007201264695U 2007-11-22 2007-11-22 Prestressed concrete side-assist pressing enhancement type precast pile Expired - Fee Related CN201217801Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2007201264695U CN201217801Y (en) 2007-11-22 2007-11-22 Prestressed concrete side-assist pressing enhancement type precast pile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2007201264695U CN201217801Y (en) 2007-11-22 2007-11-22 Prestressed concrete side-assist pressing enhancement type precast pile

Publications (1)

Publication Number Publication Date
CN201217801Y true CN201217801Y (en) 2009-04-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2007201264695U Expired - Fee Related CN201217801Y (en) 2007-11-22 2007-11-22 Prestressed concrete side-assist pressing enhancement type precast pile

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102409670A (en) * 2011-08-08 2012-04-11 浙江中淳新材料股份有限公司 Method for constructing foundation pile
CN102953392A (en) * 2012-10-27 2013-03-06 江苏华源新能源科技有限公司 Pile foundation structure of photovoltaic power station and construction process of pile foundation
CN104358254A (en) * 2014-10-14 2015-02-18 周兆弟 Variable-section hollow square pile
CN105220720A (en) * 2015-10-20 2016-01-06 西安科技大学 Building foundation, Collapsible Loess District reinforcing pile and pressing pile construction method thereof

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102409670A (en) * 2011-08-08 2012-04-11 浙江中淳新材料股份有限公司 Method for constructing foundation pile
CN102409670B (en) * 2011-08-08 2015-12-16 中淳高科桩业股份有限公司 Method for constructing foundation pile
CN102953392A (en) * 2012-10-27 2013-03-06 江苏华源新能源科技有限公司 Pile foundation structure of photovoltaic power station and construction process of pile foundation
CN102953392B (en) * 2012-10-27 2015-12-02 江苏华源新能源科技有限公司 A kind of pile foundation structure of photovoltaic plant and pile foundation construction technique
CN104358254A (en) * 2014-10-14 2015-02-18 周兆弟 Variable-section hollow square pile
CN104358254B (en) * 2014-10-14 2016-08-24 周兆弟 Variable cross-section hollow square pile
CN105220720A (en) * 2015-10-20 2016-01-06 西安科技大学 Building foundation, Collapsible Loess District reinforcing pile and pressing pile construction method thereof

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20090408

Termination date: 20091222