JPH073788A - Hollowing low-discharge, low-noise, and low-vibration pile driver and method for driving pile - Google Patents

Abstract

PURPOSE:To solidify earth and sand around a pile. CONSTITUTION:In a hollowing low-discharge, low-noise, low-vibration pile driver and a method for driving piles, a wind 9 for preventing earth and sand from entering which is provided near the end of a rod auger 5 provided within a pile 7 prevents earth and sand from entering the hollow portion of the pile 7. An outer taper type end shoe 10 provided at the end of the pile 7 pushes out drilled and mixed earth around the pile 7. The wing 9 for preventing earth and sand from entering and the outer taper shoe 10 may be combined. Surplus soil can thus be decreased at a low rate of discharge of earth.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention generally relates to a construction civil engineering machine and a construction method, and more particularly to a pile driving machine and a pile driving method for driving a pile used for foundation work of a structure such as a building. In particular, it relates to a pile driver and a pile driving method with low soil discharge, low noise and low vibration of Nakabori.

[0002]

2. Description of the Related Art There are various pile driving machines and their construction methods, and in the past, a weight (hammer) was lifted by a wire and dropped to drive a pile. This is too inefficient, so an engine-type pile driver with a hammer piston was developed. However, since this is very noisy, a drill-type excavation (middle excavation) type pile driver and a pile driving method were developed.

[0003]

However, the conventional excavating pile driving machine and the pile driving method have a problem in solidifying the periphery of the pile because the drilling liquid (peripheral fixing liquid) is hard to be pushed out to the outer periphery of the pile. May occur. Further, since the tip of the pile driving machine is of a type in which the conventional one draws earth and sand into the hollow portion, similarly, there may be a problem in solidification around the pile.

[0004]

In view of the above problems, the medium excavation low soil discharge low noise low vibration pile driving machine and the pile driving method according to the present invention, in consideration of the above-mentioned problems, allow intrusion of earth and sand to solidify the periphery of the pile. The adoption of a preventive wing and excavation of the structure of the tip slag is of a type that pushes mixed mud around the pile. In particular, it is a pile driving machine and pile driving method by combining a tip shape of the pile and a sedimentation system with a sand entry prevention wing attached to the rod auger.

The concrete constructions of the low-pile pile excavation and low-noise and low-vibration pile driving machine and the pile driving method according to the present invention will be described in detail below. First, the construction of the Nakabori low-earthing low-noise low-vibration pile driving machine according to claim 1 of the present invention will be described. This is a medium trench type pile driver for the foundation work of a building, and has a wing to prevent sediment ingress. This earth and sand entry preventing wing is provided in the vicinity of the tip of the rod auger provided in the pile to prevent the earth and sand from entering the hollow portion of the pile.

[0006] Next, the construction of the middle excavation low soil discharge low noise low vibration pile driver according to claim 2 of the present invention will be described. This is a middle moat type pile driving machine for foundation work of a building, which has a tip recess provided at the tip of the pile. This tip rake is an outer taper type that pushes excavated and mixed mud around the pile.

Then, the construction of the middle excavation / low soil discharge / low noise / vibration pile driving machine according to claim 3 of the present invention will be described. This is the earth moat type pile driving machine for the foundation work of the building, and there is a gravel prevention wing. This earth and sand entry preventing wing is provided in the vicinity of the tip of the rod auger provided in the pile to prevent the earth and sand from entering the hollow portion of the pile. Next, there is a tip recess provided at the tip of the pile. This tip rake is an outer taper type that pushes excavated and mixed mud around the pile.

Further, the construction of the method of pile driving with low earth excavation, low noise and low vibration according to claim 4 of the present invention will be described. this is,
In the medium-boring type pile driving method for foundation work of a building, the entry of sand and sand from the rod auger in the pile prevents the entry of sand into the hollow part of the pile. .

Then, the construction of the method of pile driving with low earth excavation, low noise and low vibration according to claim 5 of the present invention will be described. this is,
In the method of driving a medium-pile pile for foundation work of a building, an outer taper type tip ditch provided at the tip of the pile pushes the mud excavated and mixed around the tip to the periphery of the pile.

Further, the construction of the method for driving piles with low soil discharge, low noise and low vibration, according to claim 6 of the present invention will be described. this is,
In the medium trench type pile driving method for the foundation work of the building, the outer taper type sediment prevention wing provided near the tip of the rod auger provided in the pile prevents the sediment from entering the hollow part of the pile. However, a tip dreg provided at the tip of the pile pushes out the mud excavated and mixed in the vicinity of the tip to the periphery of the pile.

Finally, the construction of the method of pile driving with low earth digging, low noise and low vibration according to claim 7 of the present invention will be described. this is,
In the medium trench type pile driving method for the foundation work of the building, the outer taper type sediment prevention wing provided near the tip of the rod auger provided in the pile prevents the sediment from entering the hollow part of the pile. However, the tip of the pile provided at the tip of the pile pushes the mud excavated and mixed in the vicinity of the pile to the periphery of the pile, and when the negative layer N is deep and the negative value becomes high, the negative value is lowered by using bentonite liquid. Is.

[0012]

The function and the pile driving method of the present invention have the following functions because of the above-mentioned construction. First, the operation of the Nakabori low soil discharge low noise low vibration pile driver according to claim 1 of the present invention will be described. This is to prevent the sand and sand from entering the hollow part of the pile at the tip of the rod auger installed in the pile in the medium trench type pile driving machine for the foundation work of the building. .

Next, the operation of the medium excavation low soil discharge low noise low vibration pile driving machine according to claim 2 of the present invention will be described. This is an outer-taper-type tip ditch provided at the tip of the pile in a medium-drilling pile driving machine for the foundation work of a building, and pushes mud mixed by excavation to the periphery of the pile.

Further, the operation of the low-pile soil excavation / low-noise / low-vibration pile driving machine according to claim 3 of the present invention will be described. This is to prevent the sand and sand from entering the hollow part of the pile near the tip of the rod auger provided in the pile in the medium-drilling pile driving machine for the foundation work of the building. . Next, an outer taper type tip slag provided at the tip of the pile pushes the excavated and mixed mud around the pile.

Further, the operation of the method of piling a pile with low earth excavation, low noise and low vibration according to claim 4 of the present invention will be described. this is,
In the method of driving a medium-pile pile for foundation work of a building, the entry wing for preventing sediment from entering near the tip of a rod auger provided in the pile prevents the sediment from entering the hollow part of the pile.

Then, the operation of the method for piling a low-soil, low-earthing soil, low-noise, low-vibration pile according to claim 5 of the present invention will be described. this is,
In the medium-boring pile driving method for the foundation work of a building, an outer taper type tip ditch provided at the tip of the pile pushes the mud mixed by excavation and mixing around it.

Further, the operation of the method of piling a pile with low earth excavation, low noise and low vibration according to claim 6 of the present invention will be described. this is,
In the medium trench type pile driving method for the foundation work of the building, the outer taper type sediment prevention wing provided near the tip of the rod auger provided in the pile prevents the sediment from entering the hollow part of the pile. Then, a tip dreg provided at the tip of the pile pushes the mud excavated and mixed in the vicinity thereof to the periphery of the pile.

Finally, the operation of the method of piling a pile with low earth excavation, low noise and low vibration according to claim 7 of the present invention will be described. this is,
In the medium moat type pile driving method for the foundation work of a building, the outer taper type sediment prevention wing provided near the tip of the rod auger provided in the pile prevents the sediment from entering the hollow part of the pile. To do. Then, the tip dregs provided at the tip of the pile push out the mud excavated and mixed in the vicinity thereof to the periphery of the pile. In addition, and the negative layer N
If the negative value becomes high and the negative value becomes high, use the bentonite liquid to lower the negative value.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Below, a detailed description will be given of the Nakahori low soil discharge, low noise and low vibration pile driving machine and pile driving method according to the present invention with reference to the accompanying drawings. FIG. 1 is a partially omitted side view, partially sectional end view of an embodiment of a low-pile earthmoving low-noise low-vibration pile driving machine according to the present invention. FIG. 2 is a side view showing a general usage state of the Nakabori type pile driver and the pile driving method.

First of all, an intermediate-drilling pile driving machine for foundation work of a building generally assists the press-fitting of a pile with an auger machine 1 which is a driving device for excavating a rod auger and an expanding bit by applying a rotational force. It is a center hole type monken (doughnut type monken) 2 that press-fits and sinks the pile by tapping when it does not go smoothly, and a suspension type counterweight when equipped with a center hole type hydraulic hammer. The ram 3, the impact cap 4 that is a device for mitigating the impact of impact, and the function of transmitting the rotational force of the auger machine 1 to the bit at the tip have a hollow interior,
It consists of a rod auger 5 that relays water and cement milk from the plant to the expansion bit, an expansion bit 6 and a tip shackle that is worn on the tip of steel pile or concrete pile 7 that is driven into the soil. This is piled by using the special construction work vehicle 8 as shown in FIG.

In addition to the above, the middle excavation low earth discharge low noise low vibration pile driving machine according to the present invention has the earth and sand entry preventing wing 9 first. This sediment entry wing 9 has piles of sand 7
It is provided in the vicinity of the tip of the rod auger 5 provided in the pile 7 in order to prevent it from entering the hollow portion of the (pile). By installing this wing 9, the excavating liquid (peripheral fixing liquid) can be pushed out to the outer peripheral portion of the pile 7 to sufficiently fix the periphery of the pile 7, and to reduce the frictional force during the sinking of the pile 7. It became possible to smoothly lay down the pile 7.

Next, there is a tip recess 10 provided at the tip of the pile 7. The tip slag 10 is of an outer taper type that pushes the excavated and mixed mud around the pile 7. That is, the conventional slag 10a is of a type that attracts earth and sand into the hollow portion, and has a earth and sand scraping structure as shown in the sectional end views of the vicinity of this portion shown in FIGS. In the case of low soil discharge, low noise and low vibration pile driving machine and pile driving method, it is for pushing out the mud mixed by excavation and mixing around the pile 7 with the expansion bit 6 as an outer taper sink.
The piles in FIGS. 3-1 and 3-3 are concrete piles, and the piles in FIG. 3-2 are steel piles.

Therefore, the above-mentioned earth and sand prevention wing 9
And the above-mentioned outer taper sink 10 may be combined. That is, the above-mentioned earth and sand entry prevention wing 9 prevents the earth and sand (fixed liquid, earth and sand) mixed by excavation during the sunk of the pile 7 from entering the hollow portion of the pile 7, and is directed downward so as to wrap around the periphery of the pile 7. It plays the role of pushing earth and sand in the direction of. Then, by combining this with the above-mentioned outer taper sink 10, synergistically pushing mud (mixed liquid or earth and sand) around the pile 7 and submerging the excavated earth and sand, the pile 7 is sunk.

Next, the construction method using the above-mentioned Nakabori low soil discharge low noise low vibration pile driving machine will be described. This is because the earth and sand entry prevention wing 9 provided in the vicinity of the tip of the rod auger 5 provided in the pile 7 allows the earth and sand to enter the hollow portion of the pile in the medium trench type pile driving method for the foundation work of the building. Prevent.

On the other hand, another construction method using the above-mentioned Nakabori low soil discharge low noise low vibration pile driver will be described below. This is an outer-taper type tip rake 10 provided at the tip of the pile 7 in the medium trench type pile driving method for the foundation work of a structure, and pushes out the mud excavated and mixed in the vicinity thereof to the periphery of the pile 7.

When both of the above-mentioned construction methods are used in combination, they exhibit a great feature as a synergistic effect. In practice, these combination methods are desirable.

In the case of the PHC pile, the tip recess 10 has an outer taper shape as shown in FIG. This is for concrete. Examples of each size are given below. hdt 500φ 150mm 10mm 4mm 600φ 150mm 10mm 6mm 700φ 200mm 12mm 6mm 800φ 220mm 12mm 6mm 1000φ 250mm 12mm 6mm However, if the pile length exceeds 40m, consider it separately.

On the other hand, in the case of the SP pile, the outer taper shape as shown in the sectional end view near the tip recess 10 shown in FIG. An example of this size is given below. This is for steel pile. hd T α 500φ 150mm 50mm 10mm 45 ° 600φ 150mm 70mm 10mm 45 ° 700φ 200mm 80mm 12mm 45 ° 800φ 220mm 100mm 12mm 45 °

In the table above, h is h1
It is the length between h2 (see FIGS. 4 and 5 below), d is the width between the d1 and d2 of the boom 10, and the symbol T is the size corresponding to the wall thickness of the steel pile 7 shown in FIG. And
The width of the depression inside the upper part of the shoe 10 is shown. Then, α indicates the angle between the sides α1 and α2 starting from h1. Further, t is the wall thickness of the steel shell of the lure 10. In addition, concrete is packed in it. Then, how to develop supportive force (securing of supportiveness)
Is secured by the interaction between the peripheral fixative and the root fixative. Also, if the final light hit can be made, it is possible to secure it at the same time. Furthermore, the piles will be settled by press fitting or tapping to the excavation depth. However, it is different in the gravel layer.

However, as a general rule, the root hardening liquid is used in the entire positive layer P. The negative layer N will be constructed using drilling fluid. When the negative layer N is deep and the negative value is high, it is possible to lower the negative value by using bentonite liquid. Then, the peripheral fixative 11a is jetted and stirred over the entire circumference of the pile (excluding the support portion H). The frictional force is about the value obtained by the cement milk method. Tip consolidation is based on the general medium excavation consolidation method (eg NAKS method).

The pile is completed as shown in FIG. 6 which is a side cross-sectional view showing the state of the pile after pile driving in the soil according to one embodiment of the method of pile driving with low soil discharge, low noise and low vibration according to the present invention. That is,
When the pile tip reaches the predetermined support layer Lo before the settling, the rooting liquid is extracted and stirred to reach the pile tip layer Lt. Finally, the pile is sunk into the pile tip layer Lt by press fitting or tapping. After that, the rod auger 5 is lifted and completed. However, depending on the case, the inner fixing solution 11 and the peripheral fixing solution 11a, which are tip-fixing solutions, are injected into the support layer H, the positive layer P, and the negative & fructification layer N at the tip of the pile, and the negative & fructification layer N on the upper part thereof is injected. The stabilizing solution 12 may be injected in some cases. The GL shown in the figure
Is the ground.

[0032]

INDUSTRIAL APPLICABILITY Because of the above-mentioned advantages, the Nakahori low-discharging low-emission low-noise low-vibration pile driving machine and pile driving method according to the present invention have the following great effects. That is, the above-mentioned sediment entry wing plays a role of pushing out the sediment in the downward direction so as to wrap around the pile, and the sediment mixed with the excavation (fixing liquid, sediment) enters the pile hollow part during the pile sunk. Prevent that. Then, the outer taper sinks the mud (mixed liquid or sediment) around the pile, and the pile is submerged without discharging a large amount of excavated sediment. This low earth removal is a great effect of the present invention. In other words, a large amount of construction surplus soil causes a great deal of problems in its disposal.

Also, the effect becomes synergistic by the combination of both the above-mentioned earth and sand preventive wing and the outer taper. That is, the above-mentioned earth and sand entry preventing wing pushes down the earth and sand that has pushed downward so as to wrap around the pile, and the above-mentioned outer taper squeeze the mud (mixed liquid or earth and sand) around the pile to lay down the pile. This is because it is possible to effectively suppress the discharge of a large amount of construction surplus soil, while producing a synergistic effect that it helps to solidify the sediment around the pile.

[Brief description of drawings]

FIG. 1 is an end view of a partially omitted side surface and partial cross section of an embodiment of a low-pile soil excavation low-noise low-vibration pile driving machine according to the present invention.

FIG. 2 is a side view showing a general use state of the Nakabori type pile driver.

FIG. 3 is an end view of a cross section of a conventional type tip tip.

FIG. 4 is a cross-sectional end view in the vicinity of the tip rake when the medium-drill low-earthing low-noise low-vibration pile driving machine according to the present invention is used for a PHC pile.

FIG. 5 is a cross-sectional end view in the vicinity of the tip rake when the medium-drill low-earthing low-noise low-vibration pile driving machine according to the present invention is used for the SP pile.

FIG. 6 is a side cross-sectional view of a pile after pile driving according to the embodiment of the present invention, which is one of the methods for pile driving with low soil discharge, low noise, and low vibration.

[Explanation of symbols]

 5 Rod auger 7 Pile 9 Sediment entry prevention wing 10 Outer taper sink 11 Internal fixative 11a Peripheral fixative 12 Stabilizer

Claims (7)

[Claims] Claims: 1. In a medium-boring type pile driving machine for foundation work of a building, a gravel entry prevention wing is provided near the tip of a rod auger provided in a pile to prevent the sediment from entering the hollow portion of the pile. A piling machine for low-earthing low-noise, low-noise and low-vibration, characterized by being provided. 2. A middle-bori type pile driver for foundation work of a building,
A middle excavation low soil discharge low noise low vibration pile driving machine characterized in that a tip dreg provided at the tip of the pile is an outer taper type that pushes mud mixed by excavation to the periphery of the pile. 3. A middle-bori type pile driver for foundation work of a building,
A mud that is provided with a sand entry prevention wing near the tip of the rod auger provided in the pile to prevent the sand from entering the hollow part of the pile, and the tip dreg provided at the tip of the pile. It is an outer taper type that pushes out the pile around the pile, and it is composed of a middle excavation, low soil discharge, low noise and low vibration pile driving machine. 4. In the method for driving a medium-pile pile for foundation work of a building, earth and sand are prevented from entering the hollow portion of the pile by means of a sand-and-sand entry prevention wing provided near the tip of a rod auger provided in the pile. Nakamori low soil discharge, low noise and low vibration pile driving method characterized by being composed of prevention. 5. In an inner trench type pile driving method for foundation work of a building, an outer taper type tip ditch provided at the tip of the pile pushes out the mud mixed by excavation and mixing in the vicinity thereof, Nakamori low soil discharge low noise low vibration pile driving method characterized by being constructed. 6. An inner taper type sand digging method for a foundation construction of a building, wherein an outer taper type earth and sand preventive wing provided in the vicinity of a tip of a rod auger provided in a pile allows the earth and sand to reach a hollow portion of the pile. Nakadori low excavation low noise low vibration pile, characterized by being configured to prevent entry and to push out mud mixed by excavation and mixing in the vicinity of the pile at the tip of the pile to the periphery of the pile. Driving method. 7. In the method of driving a medium-pile pile for foundation work of a building, earth and sand enter the hollow part of the pile by means of an outer taper type earth and sand preventive wing provided near the tip of a rod auger provided in the pile. To prevent entry, the tip ditch provided at the tip of the pile pushes the mud excavated and mixed in the vicinity to the periphery of the pile, and the negative layer N
When the negative value becomes deep and the negative value becomes high, the negativeness of the negative is reduced by using bentonite liquid.