CN201217249Y

CN201217249Y - Prestressed concrete side-assist press enhancement type precast pile steel form

Info

Publication number: CN201217249Y
Application number: CNU2007201264708U
Authority: CN
Inventors: 王家毅; 潘希柏
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-11-22
Filing date: 2007-11-22
Publication date: 2009-04-08
Anticipated expiration: 2017-11-22

Abstract

Disclosed is a prestress concrete enhancing precast steel pole mould with assistant side pressure, which comprises an outer mould (1); the steel pole mould is characterized in that an inner mould (2) is arranged on the inner surface of the outer mould along the axial direction. Fixing plates (4) which is contacted with the corresponding the other half mould (2) is arranged on the edge of the inner mould (2), and a borehole occluding groove (3) is arranged between two contacting fixed plates (4). The mould can make precast poles with various pole diameters, the precast poles has small friction force with the mud body at the time of being sunk, the pole sunk speed is small so as to improve the work efficiency; at the same time, the security accidents caused by steel rope sliding can be prevented due to the concave convex parts on the surface of the poles.

Description

The auxilliary enhancement mode prefabricated pile punching block of pressing of prestressed concrete side

Technical field

The utility model relates to a kind of mould of making concrete precast pile, particularly makes the auxilliary enhancement mode prefabricated pile punching block of pressing of prestressed concrete side.

Background technology

Prefabricated pile is shapes such as smooth cylinder, square, gengon in the standard collective drawings of country and each department at present, because these the whole body diameter is all in full accord, so there are following several technical problems in actual use:

1, on hanging stake in the machine process, the steel wire lashing rope is slippage in smooth stake table easily, and construction and security incident easily take place, and causes damage.

2, in the piling construction process, the stake machine clamp produces slippage, and constructional difficulties takes place.

3, in the piling construction process, whole stake table all produces friction with the soil body, has increased penetrating resistance, and the stake machine need provide very big operating pressure, brings influence to piling construction, even can't proceed or finish piling construction.

4, in the piling construction process, finish piling construction owing to need bigger operating pressure, the stressed meeting of prefabricated pile reaches every critical value, it is destroyed pile sinking difficulty or pile body to occur, increase cost, the influence construction delays project progress, do not reach prefabricated pile design instructions for use etc., limited the application of pile tube.

5, when adopting the friction side mode of holding to use pile tube, owing to reasons such as smooth stake surfaces, when not reaching designing requirement with its frictional resistance of long size prefabricated pile, the stake that will increase pile sinking is long, and cost is significantly increased.

6, the prefabricated pile face shaping is very single.

Summary of the invention

The technical problems to be solved in the utility model provides a kind of and can produce the frictional resistance that can reduce the pile body and the soil body and improve pile sinking efficient and the punching block of the auxilliary pressure of the prestressed concrete side enhancement mode prefabricated pile that working security is high exactly for overcoming the deficiencies in the prior art.

Technical solution of the present utility model is:

The auxilliary enhancement mode prefabricated pile punching block of pressing of this prestressed concrete side includes external mold, and it mainly is that inner surface at external mold is interval with internal mold vertically, makes the diameter of the prefabricated pile that produces equate that at interval promptly pile body diameter is that major diameter and minor diameter replace at interval.This prefabricated pile can reduce more than 50% the contact friction with the soil body at least, and its protrusion place can also prevent that steel wire rope from skidding and the construction or the personal safety accident that occur.

Further technical solution of the present utility model is:

The edge of internal mold has the other half internal mold contacted fixed head relative with it, is provided with only stock tank between two contacted fixed heads.

The cross section that two internal molds that match surround is circular, square, rectangle or polygon.

The utility model can produce the prefabricated pile that the surface has different-diameter, and the good effect that prefabricated pile produced of this structure is:

1, the tongue and groove that forms of pile body male and fomale(M﹠F) 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 workmen's safety, stops so class accident and the loss that causes.

2, solved prefabricated pile pile sinking anchor clamps slippage in the work progress, reduced work progress king-pile machine, improved the service efficiency of stake machine because of the anchor clamps slippage can't continue the problem of pile sinking.

3, the male and fomale(M﹠F) of stake table has reduced the frictional force with the soil body, reduces the operating pressure of a machine, and a protection stake machine has also been accelerated the pile sinking progress, guarantees running smooth of engineering.

4, the male and fomale(M﹠F) design of stake table has provided a blocking surface, creates new side resistance stress point, and the auxiliary pile machine clamp is embraced folder power, carries out piling construction.Solved and when frictional resistance increases, will rely on increase in the former pile sinking fully and embrace folder power in proportion and carry out pile sinking, increase secondary side resistance stress point, press pile sinking to be changed to the present auxilliary pressure of pressure plus side resistance of embracing by original embracing and finish piling construction jointly, avoid the appearance of the destroyed critical value of prefabricated pile, avoided prefabricated pile destroyed, stopped to embrace and crush the loss that bad pile body causes.

5, the male and fomale(M﹠F) of stake table design finishes soil structures behind over recovery at pile sinking, and the vertical shearing power of formation has increased the frictional resistance of prefabricated pile, has improved the pile tube supporting effect, obtains the unit bearing capacity cost more stable than conventional pile tube.

6, Zhuan cross section can be made into circle, square, rectangle or polygon, can provide selection on more the types to the user.

7, the prefabricated pile bearing capacity of being made increases to some extent, the consumption of stake can be corresponding be reduced in the construction site, 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 totle drilling cost that ground need drop into.

8, this type can carry out internal mold and improves on original pile tube enterprise production equipment basis, does not need to change the factory building layout, augments equipment, only needs to use the special-purpose internal mold of each type to get final product.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is that the C of Fig. 1 is to view.

Fig. 3 is the structural representation of the prefabricated pile made by the utility model.

Fig. 4 is the structural representation of Fang Mo.

The specific embodiment

Fig. 1, Fig. 2 show the mould structure that can make circular prefabricated pile.In general stake mould 1, be lined with some two internal molds 2 along its axially spaced-apart to each semicircular in shape of cross section, after closing up, per two internal molds 2 promptly are a complete circle.Because internal mold 2 has certain thickness, concrete a part of volume so in the prefabricated process of stake, accounted for, make to be less than a footpath that does not have internal mold 2 places in the stake footpath that internal mold 2 places are arranged, made prefabricated pile surface is the form of size diameter (referring to Fig. 3) spaced apart.

Vertical edge of two internal molds 2 is equipped with fixed head 4, and also design has the only stock tank 3 that can prevent that concrete slurry from flowing out between contacted two fixed heads 4.

As shown in Figure 4, internal mold 2 form of also can squaring up, by two right angle internal molds 2 close up and form one square, then can produce the prefabricated pile that cross section is square.

Certainly, internal mold 2 is not limited to above form, also can make by two internal molds 2 and close up polygonal forms such as the back is rectangular, six prismatics, to satisfy the needs of practice of construction.

Claims

1, the auxilliary enhancement mode prefabricated pile punching block of pressing of a kind of prestressed concrete side comprises external mold (1), it is characterized in that being lined with internal mold (2) vertically at interval at the inner surface of external mold (1).

2, as the auxilliary enhancement mode prefabricated pile punching block of pressing of the said prestressed concrete side of claim 1, the vertical edge that it is characterized in that every internal mold (2) all has an other internal mold (2) the contacted fixed head (4) relative with it, is provided with only stock tank (3) between two contacted fixed heads (4).

3,, it is characterized in that cross section that two internal molds that match (2) surround is circular, square, rectangle or polygon as the auxilliary enhancement mode prefabricated pile punching block of pressing of the said prestressed concrete side of claim 1.