Background technology
The present invention relates to the technology of civil engineering, particularly relate to the job practices of stake.
Traditional concrete pile comprises preformed pile and in situ pile, the construction technology of above-mentioned preformed pile is to be pressed in the ground in the static pressure mode by pile driver, its advantage is that noise is little, but it is extrusion soil in construction works, thereby cause the ground protuberance, or will around pipeline in the ground, the perhaps destruction of surrounding buildings thing.The construction technology of in situ pile generally is to hole, in the bigger area of water content, carry out mud off, its advantage is not to the surrounding area, pipeline, road damages, but this technology often has because of fluid concrete in mud, thus the problem that concrete pile body quality can't guarantee.
The content of invention
The object of the present invention is to provide a kind of job practices of concrete pile, this job practices not only can be avoided foundation soil body, the destruction of pipeline or road, and can guarantee the stake quality.
To achieve these goals, the job practices of concrete pile of the present invention comprises the steps: with mode of vibration prefabricated concrete pipe to be sunk to assigned position in the ground, in this course of action, the foundation soil body that is squeezed into prefabricated concrete pipe inside upwards is discharged to outside this prefabricated concrete pipe by this prefabricated concrete pipe.
In the job practices of above-mentioned concrete pile, the above-mentioned foundation soil body that is squeezed in the prefabricated concrete pipe is to discharge by the earth discharging hole of offering on this tube wall.
In the job practices of above-mentioned concrete pile, above-mentioned prefabricated concrete pipe is formed by the more piece pipe, offers earth discharging hole on the tube wall of every pipe joint.
In the job practices of above-mentioned concrete pile, above-mentioned prefabricated concrete pipe is a prestressed concrete pipe.
In the job practices of above-mentioned concrete pile, above-mentioned prefabricated concrete pipe is a concrete reinforced pipe.
In the job practices of above-mentioned concrete pile, above-mentioned earth discharging hole is opened in the top of prefabricated concrete pipe.
In the job practices of above-mentioned concrete pile, the bottom side portion cross section of above-mentioned prefabricated concrete pipe is the inboard taper that tilts of deflection more, the taper that tilts of biased outward more, or in the middle of this bottom surface the inside equal taper of inclination in the outside.
In the job practices of above-mentioned concrete pile, after sinking to above-mentioned prefabricated concrete pipe in the ground, the foundation soil body in the pipe is got rid of fully concrete perfusion in pipe, or after putting into reinforcing bar concrete perfusion, perhaps concrete perfusion after prestressed reinforcement is set.
In the job practices of above-mentioned concrete pile, after sinking to above-mentioned prefabricated concrete pipe in the ground, the foundation soil body in the pipe is got rid of fully, to prefabricated concrete pipe bottom, promptly the soil body of stake bottom pushes, and makes stake end concrete load dish then, or steel concrete load dish.
In the job practices of above-mentioned concrete pile, form larger-diameter prefabricated thin wall concrete pipe, so that impel the foundation soil body in the pipe outside pipe, to discharge.
Owing to adopt hollow precast concrete pipe, when sinking to this pipe in the ground, by adopting light-wall pipe, perforate on pipe, particularly this pipe is applied vibration force,, foundation soil body is entered in the pipe so can reduce this pipe and enter the frictional force of managing between the interior soil body, move up, finally be discharged to outside this pipe, in the case, pipe entered in the process of ground, reduced extruding greatly to surrounding soil, thereby make the surrounding buildings thing, the road surface, the pipeline destroyed possibility reduces greatly, also overcome the undergauge in the castinplace pile simultaneously, the defective of broken pile.Because prefabricated pipe is simultaneously as retaining wall, can higher quality, make a stake end load dish in the pipe bottom, also can form high-quality concrete pile body.
As shown in Figure 1, the construction of concrete pile of the present invention is performed such, promptly by vibrator 5, with mode of vibration prefabricated concrete pipe 1 is sunk to assigned position in the ground, in this course of action, the foundation soil body that is squeezed into prefabricated concrete pipe 1 inside moves up, and it is discharged to outside this prefabricated concrete pipe 1 by the earth discharging hole 2 that is opened in this prefabricated concrete pipe arm top.Above-mentioned vibrator 5 is to be arranged on the top of above-mentioned prefabricated concrete pipe 1 by vibrator seat 4.After above-mentioned prefabricated concrete pipe is vibrated assigned position, can take off vibrator 5 and vibrator seat 4, foundation soil body in the prefabricated concrete pipe 1 is drawn out fully, such as, adopt the mode of auger boring, or the mode of employing shoveling, then, form concrete force-bearing disc hole in the bottom of this prefabricated concrete pipe 1, fluid concrete forms the major part that enlarges in the bottom of this prefabricated concrete pipe 1, or the force-bearing disc hole in the middle of certain absolute altitude place of pipe 1 sidewall makes, or branched hole, fluid concrete forms middle concrete load dish or branch within it.Because above-mentioned prefabricated concrete pipe 1 in the work progress of stake, constitutes retaining wall, and,, guaranteed the quality of pile body, and can guarantee the quality of load dish and branch so when the cast stake, do not have the phenomenon of undergauge not with its proposition.
The cross section of the bottom side portion 3 of above-mentioned prefabricated concrete pipe 1 is in the middle of this bottom surface the taper that the inside outside tilts symmetrically, as shown in Figure 1, this shape can be balancedly with foundation soil body to manage arm inside and outside squeeze.In addition, the cross sectional shape of above-mentioned bottom side portion also can be the more taper of the inboard inclination of deflection, as shown in Figure 2.In addition, the cross sectional shape of the bottom side portion 3 of above-mentioned prefabricated concrete pipe 1 also can be the taper that biased outward more tilts, as shown in Figure 3.The cross sectional shape of three kinds of bottom side portion that Fig. 1~3 provide can be corresponding to different geological conditions, condition of construction and changing.