CN102312428A

CN102312428A - Tooth pile and pile forming method thereof

Info

Publication number: CN102312428A
Application number: CN201110104223A
Authority: CN
Inventors: 王庆伟; 王琢璐
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-04-26
Filing date: 2011-04-26
Publication date: 2012-01-11

Abstract

The invention belongs to a foundation pile and a construction method thereof of the building industry, and in particular relates to a tooth pile and a pile forming method thereof. The tooth bottom diameter (d) of the tooth pile is equal to the designed pile diameter; and the pile, the tooth outside diameter (d1) of which is greater than the tooth bottom diameter (d), is in a full-length tooth shape. The method comprises the following steps of: 1, sinking an outer pipe with an inside core pipe to the designed depth, wherein the inside core pipe is a passage for grouting concrete, and the front end of the inside core pipe is provided with a valve and is pointed; 2, arranging a plurality of columns of lugs on the outer circumference of the outer pipe; 3, pumping concrete of 1/5 to 3/5 height into a hole; 4, when the outer pipe is upwards pulled, extruding a few columns of grooves in the extruded hard soil body on four side walls of the pile hole by the lugs on the outer pipe, and continuously pumping concrete by using a high pressure pump to fill the grooves; and 5, if the pile foundation is constructed, forming the pile after a reinforcement cage is placed. The method is high in construction speed and high in efficiency; the concrete is continuously poured while vibrating and lifting the pipe; and the method is easy in construction, does not produce noise, waste soil, water or mud, and has higher construction civilization level.

Description

Tooth stake and one-tenth pile work method thereof

Technical field

The invention belongs to the foundation pile shape and the job practices thereof of building trade, particularly a kind of tooth stake and one-tenth pile work method thereof.

Background technology

At present, long-spiral-compacted-concrete pile, semi-screw pile, perfusion helical burr ram are rotary drilling and adopt high-pressure pump guncreting method to form castinplace pile, and the method pile of high-pressure pump guncreting of no use in the castinplace pile of immersed tube class.Tube-sinking cast-in-situ pile is after sinking to the projected depth descending reinforcing cage to effective method for oscillating, with hopper castinplace pile body concrete, to vibrate the tube pulling pile from top then; The several pointed flap valve door of bottom is opened under gravity concrete; Sometimes because pressure is very little, make the unlatching of flap valve door undesirable, cause phenomenons such as broken pile, undergauge, folder mud, dew muscle to influence pile quality sometimes; And bearing capacity is low, and speed is slow, efficient is low.In the technology of complex carrier compaction pile, be to utilize elongated hammer to ram pore-forming, outer tube pressurizes thereupon and puts in place; Fill building waste and harsh concrete etc. from the sidewall opening of outer tube again, be lowered to reinforcing cage after, from outer wall sidewall mouth concrete perfusion; Dialled the outer tube pile; This technology king-pile concrete spouting method is to insert from the sidewall mouth, and efficiency of construction is low, and especially oversize pile driving construction difficulty is also big.Also have static force top press poured piles and static(al) compaction pile, pore-forming adopts static pressure method, and filler is also inserted from the sidewall mouth, and this method is difficult to penetrate in the closely knit layer of sand at boulder bed.The method of full pound type bottom-enlarging filling pile and interior rammer tube-sinking cast-in-situ pile pore-forming adopts steam hammer, hammering inner and outer pipes pore-forming, and the filler mode is filler from the top, and shortcoming is that noise is big, can't construct in the city, and efficient is low.

Summary of the invention

The objective of the invention is to overcome above-mentioned technical deficiency, provide a kind of and be convenient to sink to, the noiselessness of constructing, efficient be high, can improve stake bearing capacity the tooth stake and become pile work method.

The technical scheme that technical solution problem of the present invention adopts is: the tooth stake and become the tooth of tooth stake of pile work method at the bottom of the footpath equate with design stake footpath, the tooth external diameter greater than tooth at the bottom of the footpath, be shaped as elongated profile of tooth; It becomes pile work method to be: 1, adopt the high frequency hydraulic vibration driver, having the outer tube of core pipe to sink to projected depth in the band, outer tube plays the retaining wall effect, and inboard core pipe is the passage of guncreting, and it is pointed that front end has valve, is convenient to sink to; 2, the excircle of outer tube is provided with the ordered series of numbers projection, and the columns of projection changes according to the variation in stake footpath, and projection can directly be connected on the outer tube, also can conceal to be loaded on the outer tube; 3, according to the requirement of bearing capacity, can pump into the concrete of 1/5 ~ 3/5 height in the hole earlier, vibrate extruding; According to requirement for bearing capacity, can repeat this operation 2 ~ 3 times, also can omit this step; To at the bottom of the stake and pile body form squeezedly, make pile body diameter be a bit larger tham design stake footpath; When dialling outer tube 4,, projection on the outer tube squeezed around the stake hole wall the very hard soil body, extrude several row grooves again; Utilize high-pressure pump uninterrupted pumping concrete again; Fill up groove, form the dentation pile body, the double wedge of pile concrete forms tight interlock with stake hole wall soil body groove; If 5 pile foundations, pile behind the placement reinforcing cage.

The invention has the beneficial effects as follows: tooth stake and become pile work method to adopt high frequency hydraulic vibration driver and outer tube to sink to projected depth with the core pipe that has in the pointed valve, the front end valve is made pointed, is convenient to sink to, and makes speed of application fast; Efficient is high, and the continuous guncreting of tube edge is carried in the limit vibration, becomes holes protecting wall with band profile of tooth outer tube; And, guarantee the quality of stake, the tooth stake of formation with high-pressure pump pumping of concrete method; The double wedge of tooth stake and the tight interlock of soil body groove improve the bearing capacity of stake, and the technology construction easily; Noiselessness, no spoir, precipitation, no mud, construction civilization degree are not higher.

Description of drawings

Specify with embodiment below in conjunction with accompanying drawing.

Fig. 1 is the tooth stake and becomes tooth stake shape figure in the pile work method.

Among the figure, footpath at the bottom of the d-tooth; d ₁-tooth external diameter.

The specific embodiment

Embodiment, tooth stake and the pile instrument that becomes pile work method to use thereof have pointed valve as front end, the connection valve body be in the outer tube of core pipe is arranged; The core pipe is the passage of guncreting, and the other end connects the port of export of high-pressure pump, and outer tube is provided with six row projections; The columns of projection can directly change and changes with stake; Projection can be connected on the excircle of outer tube, and projection also can conceal and be loaded in the outer tube, when outer tube sinks to projected depth; The latent projection that is loaded in the outer tube of expenditure again, the diameter of outer tube equal footpath d at the bottom of the tooth of profile of tooth stake.With reference to accompanying drawing 1, footpath d equals stake footpath, tooth outside diameter d at the bottom of the tooth of tooth stake ₁Greater than the i.e. design stake in footpath at the bottom of tooth footpath d; The one-tenth pile work method of its tooth stake is 1, utilize the high frequency hydraulic vibration driver; Have the core pipe outside to the inboard and be connected with the projected depth that the latent outer tube that projection is housed in projection or the outer tube sinks to stake; The front end of outer tube has valve and can make pointedly, be convenient to sink to, and outer tube plays the retaining wall effect; The outer tube of this step is directly to sink to projected depth; The outer tube that connects projection is when avaling; Just extruding forms the stake hole have profile of tooth, on push the profile of tooth stake hole of formation once more when carrying, as the outer tube that has a latent dress projection sinks to the projected depth of stake; Form earlier cylindrical stake Kong Houzai expenditure projection, on when carrying outer tube extruding form dentation stake hole; 2, according to the needs of bearing capacity, on carry outer tube, simultaneous pumping is put 1/5 ~ 3/5 high concrete to the stake hole; Vibrate extruding downwards, can repeat this operation 2 ~ 3 times, at the bottom of the stake and pile body form squeezed; Make concrete compaction, and make pile body diameter be a bit larger tham design stake footpath.Needs according to bearing capacity also can omit above-mentioned steps; 3, carry outer tube on; The profile of tooth stake hole that thereupon utilizes high-pressure pump uninterrupted pumping concrete to form outer tube, the hole is filled up with concrete, forms the pile body of a dentation; The concrete double wedge of pile body forms interlock closely with the groove of the stake Zhou Kongbi extruding formation soil body, and bearing capacity is increased substantially; If 4 pile foundations, pile behind the placement reinforcing cage in the stake hole.

The double wedge of the tooth stake that this kind worker method forms and the tight interlock of soil body groove that the extruding of stake week forms have improved the frictional force between the stake and the soil body greatly, if secondary extrusion again; More increased the bearing capacity of stake, adopted the high frequency hydraulic vibration driver in addition, made the ability of immersed tube stronger; Penetration power is stronger, noiselessness, no mud, no spoir, precipitation not; Adopt the high-pressure pump guncreting, it is higher to make it efficient in addition, and cost is lower.

Claims

1. a tooth stake and become pile work method, it is characterized in that the tooth of tooth stake at the bottom of footpath (d) directly equate tooth external diameter (d with the design stake ₁) greater than footpath (d) at the bottom of the tooth, stake be shaped as elongated profile of tooth; It becomes pile work method to be: 1, adopt the high frequency hydraulic vibration driver, having the outer tube of core pipe to sink to projected depth in the band, outer tube plays the retaining wall effect, and inboard core pipe is the passage of guncreting, and it is pointed that front end has valve, is convenient to sink to; 2, the excircle of outer tube is provided with the ordered series of numbers projection, and the columns of projection changes according to the variation in stake footpath, and projection can directly be connected on the outer tube, also can conceal to be loaded on the outer tube; 3, according to the requirement of bearing capacity, can pump into the concrete of 1/5 ~ 3/5 height in the hole earlier, vibrate extruding; According to requirement for bearing capacity, can repeat this operation 2 ~ 3 times, also can omit this step; To at the bottom of the stake and pile body form squeezedly, make pile body diameter be a bit larger tham design stake footpath; When dialling outer tube 4,, projection on the outer tube squeezed around the stake hole wall the very hard soil body, extrude several row grooves again; Utilize high-pressure pump uninterrupted pumping concrete again; Fill up groove, form the dentation pile body, the double wedge of pile concrete forms tight interlock with stake hole wall soil body groove; If 5 pile foundations, pile behind the placement reinforcing cage.