CN202482849U

CN202482849U - Asymmetric tapered pipe pile with bidirectional counter-through-holes

Info

Publication number: CN202482849U
Application number: CN2012200453563U
Authority: CN
Inventors: 雷金波
Original assignee: Nanchang Hangkong University
Current assignee: Nanchang Hangkong University
Priority date: 2012-02-13
Filing date: 2012-02-13
Publication date: 2012-10-10
Anticipated expiration: 2022-02-13

Abstract

The utility model relates to an asymmetric tapered pipe pile with bidirectional counter-through-holes. The wall of the tapered pipe pile is provided with a plurality of groups of Y-directional counter-through-holes and X-directional counter-through-holes, and the Y-directional counter-through-holes and the X-directional counter-through-holes in same groups are not on the same planes. The asymmetric tapered pipe pile has the advantages that water in along with drawdown of water in the holes, soil can infiltrate into the tapered pipe pile to further lower water content of soil, so that strength of the soil can be improved, and foundation bearing capacity is enhanced. The effect of soil extrusion by adjacent piles can be effectively reduced in construction of the asymmetric tapered pipe pile with the bidirectional counter-through-holes, environment cleaning is realized, and the asymmetric tapered pipe pile with the bidirectional counter-through-holes further has the advantage of energy conservation.

Description

A kind of asymmetric two-way to the bore conical pile tube

Technical field

The utility model relates to a kind of conical pipe pile, relates in particular to a kind of asymmetric two-way to the bore conical pile tube.。

Background technology

When at present existing conical pipe pile was constructed, particularly the hammer piling mode produced soil compaction effect and excess pore water pressure, very easily caused adjacent stake skew, even broken pile.PTC type conical pipe pile is used for the deep soft soil foundation treatment project, and main purpose is control foundation settlement and settlement after construction, improves bearing capacity of foundation soil, and conical pipe pile self bearing capacity is not a subject matter.The main cause that foundation settlement produces is because the discharge of soil body mesopore water under the outer load effect.Concerning deep soft soil foundations such as speedway, high-speed railway, road in airport, control its sedimentation, mostly is to control its settlement amount after construction, and its settlement amount after construction is controlled in the settlement amount after construction critical field.If produce more settling amount as far as possible in construction periods such as embankment, dykes and dams, roads, should water discharge as much as possible in native mesopore be reduced the water content of soil, then its settlement amount after construction will be able to reduce, and reach the purpose of control sedimentation and settlement amount after construction.

Summary of the invention

It is a kind of asymmetric two-way to the bore conical pile tube that the purpose of the utility model is to provide; Form two-way to the bore conical pile tube; The soil body side friction of polywater effect that makes full use of the conical pipe pile cavity and performance conical pipe pile side, every linear meter(lin.m.) be provided with 2 groups two-way to perforation.

The utility model realizes like this, it comprise conical pipe pile, Y to perforation, X to perforation, it is characterized in that having on the pile lining of conical pipe pile some groups of Y to perforation and X to perforation, same group of Y to perforation and X to boring a hole not at grade.

The technique effect of the utility model is: be provided with two-way to the bore conical pile tube in the soft foundation; Particularly in the construction period, because the conical pipe pile own characteristic, the end that diameter is little is descending; Help bringing into play a side friction of the side soil body; The soil compaction effect of conical pipe pile also can suitably reduce simultaneously, because pile driving process can produce the excess pore water pressure, water in soil can get in the conical pipe pile rapidly on the other hand.In the construction intermittent phase, under the hydrostatic pressure effect, along with the dissipation that excess pore water is pressed, water in soil also can get into rapidly in the conical pipe pile hole.If run into mucky soil, mud can flow in the conical pipe pile perforation through two-way.If water is many in the hole, then can take the mode of drawing water that it is got rid of.Along with water level in the hole reduces, water in soil can infiltrate in the conical pipe pile again, makes the water content of soil be able to further reduction, and the intensity of soil is improved, and bearing capacity of foundation soil strengthens.The asymmetric two-way adjacent stake soil compaction effect that can effectively reduce during to the bore conical tube pile construction, cleaning ambient, asymmetric two-wayly also have energy-conservation advantage to the bore conical pile tube.

Description of drawings

Fig. 1 is the sectional drawing of the utility model.

Fig. 2 is the sectional drawing of the utility model A-A.

Fig. 3 is the sectional drawing of the utility model B-B.

In the drawings, 1, conical pipe pile 2, Y to bore a hole 3, X is to perforation.

The specific embodiment

Like Fig. 1, Fig. 2, shown in Figure 3, the utility model realizes like this, have on the pile lining of conical pipe pile 1 some groups of Y to bore a hole 2 with X to boring a hole 3, same group of Y to bore a hole 2 with X to boring a hole 3 not at grade.Asymmetricly two-way the bore conical pile tube is only needed to adopt special conical pipe pile punching block produce on request in factory; Method is with existing conical pipe pile production technology; Site operation adopts silent piling method pile sinking; Other operations are considered its problem of stress concentration with existing conical pipe pile construction technology, must not adopt pile vibrosinking and hammer piling mode during this structure construction.

Claims

One kind asymmetric two-way to the bore conical pile tube; It comprises conical pipe pile, Y to perforation, X to perforation; It is characterized in that having on the pile lining of conical pipe pile some groups of Y to perforation and X to perforation, same group of Y to perforation and X to boring a hole not at grade.