CN201007001Y

CN201007001Y - Single wall helical burr PVC casing tube cast-in-situ pile and pile driver

Info

Publication number: CN201007001Y
Application number: CNU2006201248344U
Authority: CN
Inventors: 陈永辉; 徐立新; 张正刚; 冯兆祥; 王新泉
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-10-31
Filing date: 2006-10-31
Publication date: 2008-01-16
Anticipated expiration: 2016-10-31

Abstract

The utility model relates to a cast-in-place concrete pile of single wall thread PVC tube and a special beating machine. Threads are provided both in internal and external PVC tubes, the PVC tube bottom is connected with a pile tip, the PVC tube is filled with concrete to form a pile, the steel tube of the beating machine is provided with two joint points which are in swiveling joint with a fixed turning arm and a telescopic boom on the base respectively, which solves defects that external wall threads are damaged after friction of the pile and soil, gapping of the concrete and the tube due to concrete contraction, low pile load, high construction cost and non bending of the cheap PVC tube. The internal and external threads of the utility model ensures full contact of concrete and the PVC tube, the external pile wall is damage proof, the frictional force of the pile and the soil is reinforced, the pile load is increased, the construction cost is reduced, no bending is needed for PVC tube, batter pile of multiple angles is hammered, penetrating power is reinforced, the pile load is increased and the construction speed is accelerated.

Description

Single wall screw PVC sleeve pipe in situ concrete pile and set machine

Technical field

The present invention relates to a kind of stake and set machine, particularly a kind of single wall screw PVC sleeve pipe in situ concrete pile and special use set machine.

Background technology

Before the present utility model, a kind of in situ concrete pile with the double-walled plastic bushing compare with vibration sinking tube in situ concrete pile, preformed pile and cement mixing pile etc. since have advantages such as system easy to control the quality, construction is easier, consolidation effect is good progressively the popularization among.

The job practices of this stake has two kinds of modes: the one, and the steel pipe that will set earlier in the machinery is squeezed in the ground, again the double-walled plastic bushing is sling and from the steel pipe upper opening, put into, steel pipe could be extracted the construction of finishing a pile behind the fill concrete immediately in plastic pipe then, speed of application is slow; The 2nd, utilize the characteristics that the HDPE plastic pipe can be crooked, in advance HDPE double-walled plastic bushing is connected the back with the stake point and puts into the steel pipe that sets machinery from vertical steel pipe bottom, then steel pipe is squeezed in the ground together with plastic bushing, just steel pipe is extracted plastic bushing subsequently and stay in the ground, and this procedure of concreting can carry out at any time.

But these two kinds of stake types have following defective when practical application: the one, and the space for sealing between this double-wall corrugated pipe two walls, the concrete of being filled behind the pile can not contact with outer wall, be easy to screw thread infringement mutually after the mutual friction when the stake and the soil body like this with outer wall, and the frictional force of influence and the soil body; The 2nd, this double-wall corrugated pipe inner wall smooth, the concrete that fill the back makes concrete can not closely contact with sleeve pipe owing to can produce contraction.These two kinds of reasons make sleeve pipe greatly reduce the contribution of pile body bearing capacity, and pile body its sleeve pipe of when work is inoperative basically and waste, and makes construction costs increase, and since this defective make and can not use as friction pile, influenced the scope of application; The 3rd, when low-cost plastic pipes such as employing PVC plastics use as outer tube, because the PVC material is a rigid plastics, can not be crooked, and employed plant equipment vertically can't penetrate the rigid plastics sleeve pipe steel pipe in advance easily from the steel pipe bottom, therefore after can only in ground, imbedding underground hole-forming with steel sleeve earlier during its pile, put into the PVC sleeve pipe from the steel pipe upper opening, steel pipe could be extracted after building a part of concrete (general 3/4 casing length) then earlier, immersed tube and concreting pay particular attention to the construction that cooperatively interacts, cause construction speed slow, increased construction costs, during heavy in addition steel pipe with the steel sheet pile point can't and firmly be connected sleeve pipe, influenced pile quality and consolidation effect.So can only use on the high side can crooked HDPE plastic pipe, its cost of the plastic pipe of HDPE material is about about 2 times of PVC material bushing, so cost is quite expensive, is difficult to select for use in practice of construction.

Therefore stake and the special use of needing the band outer tube of seeking the satisfied following full terms of a kind of energy at present badly set machine: (1) can give full play to the effect of screw thread in the sleeve pipe, promptly can give full play to the big frictional resistance effect of the external screw-thread and the peripheral soil body, and still not influence the sleeve pipe effect after the concrete shrinkage; (2) can adopt cheap material products such as PVC as outer tube; (3) can adopt sleeve pipe with the outside to set all to finish after this job practices efficiently of cast-in-place at any time again sleeve pipe inner concrete, (4) just can be connected firmly stake point and sleeve pipe in advance.If the stake type of this band outer tube will significantly reduce construction costs, increase consolidation effect can satisfy above condition simultaneously the time, accelerates speed of application.

The concrete pile stake type of state's tyre plastic bushing is single at present in addition, and size is consistent up and down, is the circle stake.Employed stake point is flat steel plate, and when running into hard soil layer, the stake point is difficult for passing.And the machinery that sets that adopts is static pressure equipment, needs very big static pressure just can pass when running into hard soil layer equally, influenced the scope of application of this kind stake type.

Summary of the invention

Purpose of the present invention just is to overcome above-mentioned defective, develops a kind of single wall screw PVC sleeve pipe in situ concrete pile and special use and sets machine.

The technical solution of the utility model is:

A kind of single wall screw PVC sleeve pipe in situ concrete pile, its major technique is characterised in that the inside and outside screw thread that is equipped with of PVC sleeve pipe, the PVC casing shoe is connected concrete perfusion pile in the PVC sleeve pipe with the stake point.

Another technical scheme of the utility model is:

A kind of single wall screw PVC sleeve pipe in situ concrete pile sets machine, and its major technique is characterised in that to set two tie points on the machine steel pipe, is rotationally connected respectively with the fixedly turning arm on the support, flexible turning arm.

Advantage of the present utility model and effect are to reduce cost, improve consolidation effect, have enlarged advantages such as range of application.

Specific as follows:

After inside and outside the employing all being the single wall plastic pipe of screw thread, the concrete of after-pouring can fully contact with plastic bushing, do not isolate and throw off, outer tube wall is not fragile like this, strengthened the frictional force of stake with the soil body, enlarge the actual use radius of stake, thereby improved the bearing capacity of stake, reduced construction costs;

Adopt improved all-hydraulic auxiliary vibration intubate to set the machine construction, the way of utilizing its frame to tilt together with steel pipe, just making the hard sleeve that adopts cheap PVC material also can satisfy earlier plastic bushing with the outside all sets aggregates such as beginning concrete after finishing again and irritates the job practices of filling out, promptly separately do not need interlaced carrying out setting sleeve pipe and concreting two procedures, thereby increase substantially efficiency of construction, and can only adopt expensive PE tubes of material such as HDPE just can accomplish this construction technology in the past, need to increase a lot of construction costs.

After adopting frame to set the machine construction together with the tiltable all-hydraulic auxiliary vibration intubate of steel pipe, this plastic sleeve concrete pile can also set the taper pile of multiple angles except can setting present vertical stake.

Adopt frame to set the machine construction together with the tiltable all-hydraulic auxiliary vibration intubate of steel pipe, the bottom of former steel pipe is added the watertight rubber circle one, can be so that the steel plate of steel pipe and stake point compresses sealing in the process of setting, phenomenon can not appear rewinding in plastic bushing in the withdrawal process of steel pipe, in the process of setting, run into the pan soil interlayer in addition and can open auxiliary vibrating function automatically, thereby strengthened penetration power, increased the scope of application of this kind stake type;

Adopt supporting stake point, improved the penetration capacity in the pile works, also reinforced steel plate simultaneously, make it be unlikely under high pressure, steel plate to be bent, improved the bearing capacity of stake.

By changing the shape of sleeve pipe:, increased the form of stake as reducing up and down, mode such as square.

The present invention can give full play to the effect of screw thread in the sleeve pipe, promptly can give full play to the big frictional resistance effect of the external screw-thread and the peripheral soil body, and does not still influence the sleeve pipe effect after the concrete shrinkage; Can adopt cheap material products such as PVC as outer tube; At any time this job practices efficiently of cast-in-place again sleeve pipe inner concrete after can adopting sleeve pipe with the outside to set all to finish; Just stake point and sleeve pipe can be connected firmly in advance.If the stake type of this band outer tube will significantly reduce construction costs, improve consolidation effect can satisfy above condition simultaneously the time, accelerates speed of application.

Description of drawings

Fig. 1---single wall screw plastic casing structural profile schematic diagram.

The plastic bushing of Fig. 2---rotatable frame and steel pipe sets the machine structural representation.

The schematic diagram that the single wall screw plastic casing of Fig. 3---band stake point is put in advance from the steel pipe bottom.

Fig. 4---the stake schematic diagram of accomplishing fluently.

The specific embodiment

As shown in Figure 1, single wall screw PVC sleeve pipe 5 is inside and outside all screw thread, single wall, and be solid single wall; As shown in Figure 2, set on the steel pipe 1 of machine two tie points are arranged, be rotationally connected with fixedly turning arm 2, flexible turning arm 3 on the support (omit among the figure and do not draw), flexible turning arm 3 pulling steel pipes 1, promptly around the fixedly junction rotation of turning arm 2 and steel pipe 1, the single wall screw PVC sleeve pipe that unyielding PVC material is made is put into steel pipe 1 to steel pipe 1.

As shown in Figure 3, require the single wall PVC plastic bushing 5 of design during construction according to piling; The stake point 4 that prepare to cooperate single wall screw PVC sleeve pipe 5 is connected and fixes with screw with sealing ring; The length of single wall screw PVC sleeve pipe 5 is grown a bit (as increasing about 10～50cm) partially with consistent also can the omiting of length of the stake that needs reinforcement, if single single wall screw PVC sleeve pipe 5 length are not enough, available joint adds sealing ring, the auxiliary again methods such as screw, glue that adopt connect many single wall screw PVC sleeve pipes 5 and cutting in case of necessity, to reach needed length.The machine of setting is arranged in the position of desire piling; The immersed tube 1 that will set then on the machine tilts, and the single wall screw PVC sleeve pipe 5 that will have the appropriate length of stake point 4 is again put into from steel pipe 1 bottom, draws in and fixes in that single wall screw PVC sleeve pipe 5 top available active clips or rope 6 are auxiliary; Then, again with steel pipe 1 with set the single wall screw PVC sleeve pipe 5 go back to direct join align piles position of machine together with the inside; If batter piling, the angle that sets of then adjusting steel pipe 1 in the same way gets final product.

Start the machine that sets, after adopting the mode of static pressure or auxiliary vibration to sink to the degree of depth of designing requirement in advance together with the single wall screw PVC sleeve pipe 5 of the inside the steel pipe 1, again steel pipe 1 is extracted ground, single wall screw PVC sleeve pipe 5 is owing to the stake point 4 that has enlarged cross section then can be stayed in the ground; Just setting of such single wall screw PVC sleeve pipe 5 finished; Move the machine that sets to the position that next root need set and set another root single wall screw PVC sleeve pipe 5, set until the monolithic zone that will need reinforcement or whole ground and finish by same above-mentioned method.

Concreting or other inserts in single wall screw PVC sleeve pipe 5 then, the concrete that this operation can adopt factory to produce in advance or method such as job mix forms is all filled full for empty single wall screw PVC sleeve pipe 5 the inside, and vibration compacting in addition, make the strength of the mixing pile that reaches designing requirement, as C10～C30 etc., also can put into reinforcing bar earlier, concreting again forms the pile body of steel concrete.

As shown in Figure 4, be the in situ concrete pile of the single wall screw PVC sleeve pipe 5 that formed.

Principle of the present utility model and technology can be widely used in various reinforcement of soft soil, slope reinforcement stake.

The claimed scope of the utility model is not limited only to foregoing description.

Claims

1. a single wall screw PVC sleeve pipe in situ concrete pile is characterized in that the inside and outside screw thread that is equipped with of PVC sleeve pipe, and the PVC casing shoe is connected concrete perfusion pile in the PVC sleeve pipe with the stake point.

2. a kind of single wall screw PVC sleeve pipe in situ concrete pile according to claim 1 is characterized in that single wall screw PVC casing shoe connects sealing ring, connects the stake point again, fixes with screw or glue.