JPS5873617A - Apparatus and method for constructing tubular stake - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides cast-in-place tubular piles V
Related to Tubular Pile 7) 41B Construction Method 1.

The prior art of the buoy aeration process is based on the drill column, the ribbon surface and the tip +11! The hollow ground has a tubular ground displacement body tm, which is also inserted into the hollow ground. Discloses a device comprising an inner surface of the slot for cooperating with the body protrusion;
V111 distribution 1 row, axial direction 1 along the drill column
This movable opening reveals a flexible skirt and has a rippled ribbon surface on the outside of the upper part. □ This υ *device, song υ, :i: hi de) koh η・
Inside the hole filled with concrete a and #:
tt - true center (because it is difficult to descend, taU*
The drawback is that the method is unsuitable for the construction of cast tubular piles.

In addition, a method for constructing VWS cast-in-place tubular piles has been known as an invention (USSR Inventor's Certificate No. 777144), according to which the casting is driven underground.
With this υ key, the fixing is made up of a tubular member with multiple concentric pipes spaced at intervals of 1 cm with caps attached. 16" with reinforced reinforcement
゜However, the conventional method has some drawbacks, such as the following.

l. It is difficult to drive one of the sunken casting rims, which have a large resistance from underground, so the rudder efficiency is low.

2. The area where the ground is insufficient around the casting is stiff or improperly tamped, which unduly increases the RF steering force of the caster supporting the ground. - 3. The two sides of the caster are not protected from the corrosive action of groundwater. 7) The casting will be destroyed quickly. 4. The proposed method is that the V spacing between the central and single-pipe members is good. With υ that cannot be reduced, the good quality of the piles cannot be maintained because the gravel along with the ground is easy to move within the interval.

5. The length of tubular piles driven in %6 places is limited υ because of the large resistance of the caster to the ground. If you can expand the store, it will be 1! ll1
11k Cast-in-place tubular pile construction equipment and 1 to increase efficiency
According to the present invention, 11 tubular piles υ according to the conventional construction method are provided. 11
B. A hollow ground displacement body having a lower part with a fixed size, a lower part formed by one part of the outer spiral ribbon surface terminating in an opening sealed by one part of the skirt, and an upper tapered part. ψ earth f! The lIK position body is fixed immovably on the drill column via the spider. The outer surface of the upper part υ is tapered with one bow on the top, and one drill post is attached to the skirt to improve the torque.

The skirt has an axial length which, when in the lower position, causes a ground displacement of 9 with the leading edge.

The present invention also provides a method for constructing cast-in-place tubular piles υ, according to which the invention υ*t + stranded holes are formed,
When the iI pupil retreats from the hole, hole 1 is filled with concrete and the hollow part is piled up along a certain length 1 in the axial direction t.
This is to form an extended tubular pile and fill the hole with concrete. At the same time, an outer shell is formed by placing the corrosion-resistant material into the hole from the device 1, and the material is fed into the hole.

The fal'D'R method for carrying out this method is to feed the corrosion-resistant material through the hole mouth at the same time as the one retracting *tt* from the hole, and when the device is retracted from the hole, the cough device hole υwmF3
%C displacement.

In Figures 1 to 13, a cast-in-place tubular pile elliptical section is placed, a drill column 1s is attached, a hollow skirt 2 is installed,
A helical tool assembly 1 comprises a ground displacement body 3 in which a tubular ground displacement body 4 having a tip 5 is disposed. Ground potential wind 3
A cylindrical fixed-sized portion 7, an F-direction tapered portion 8 having an outer helical ribbon surface and terminating in an opening 1, and a coaxial 1 in the pipe Concrete pipe 11) including drill column 1t'' to be placed (@
(Fig. 4) There is a hollow ground displacement body 6 having an upper tapered portion 9 and f connected to each other. The upper section has an outer helical ribbon surface. The drill column l is rigidly fixed to the spider 11 (FIGS. 4 and 5) and to the hollow ground f housing 6υ inner side υ cylindrical folded portion 71. Hollow part 11 degree body 6
5 are placed coaxially with the ground deformation tQK3. The upper &lSυlS-toe 2 connected to the drill column l has an inner slot 13 (Fig. 6) which is the same as the vertical lip inserted in the outer surface 5 of the trinyl column lv in order to transmit torque and move in the width direction. The hollow cone section has 12 holes. The tubular ground displacement body 4 is moved along the slot 161 of the tubular ground displacement body 4.
(Fig. 8) 5 This receiver cooperates with the ground displacement sail 3 through the inserted half-shaped protrusion 15fr. ◎The inward penetration of the tubular ground displacement body 4υ is equal to the inner diameter of the drill column l'. The lower part ζ of the displacement body 4υ is equipped with an injection boat 17. Slot 16t: i displacement body 4
When opening and closing the injection ball (17), the displacement body (47) is centered on the ground displacement (31) during the formation of a hole.
(b) If the Ross cart, which is a means of preventing rotation, is located in the direction 7) and azimuth '11 (Fig. 3), the lower tapered portion 87
) Close 18 on the 1st day. One rotation of the skirt 7) about the V&-0 longitudinal axis is prevented by the longitudinal lip 141 into which the slot 131 is received. When the skirt 2 is in the lower position (Fig. 9), the spiral ribbon of the displacement challenge 3 is hidden, and the skirt 2D is bent and extended.
A strange bLa-r with 1 part and 4 parts, ■ Purer than leverage. When the skirt 2 is 1 fsF above the warp, the true opening 18 opens. Displacement 1jc3v spiral ribbon type surface, tip part 5, and casing 6D taper part 8.9Vi color and ri seed root 19 on the ground, hole 2oυ being formed, device f under darkness.
It will be screwed in.

The Q method of the present invention and the novel We arrangement are used as follows. The drill column l and the concrete feed pipe lO, both of which are rigid, are rotated by a simultaneous axial thrust t, thereby forming a hole 20 (Fig. 1O), which
On the other hand, the blade 9 provided with the displacing wind 31, the lower tapered portion 8I of the tip portion 5 and the ground displacement body 6 are removed. When forming the hole υ, the skirt 2 is rotated from the upper position of the skirt υ (FIG. 3) (it is held tightly and centered around the axis of the shaft '7'), and the slot 1 interlocking with the vertical lip 14 is inserted between the two sides. When the skirt 2 is held in the lower position, the outlet 18 of the displacement body 6 is sealed and the inside of the displacement body 6 is not allowed to enter. In this V crying 1, the skirt 2 ZC lower edge 2 is combined with the ribbon-style surface of the paternal tool 3υ. The W-shaped body 4ti is withdrawn and the injection bowl 1-17 is sealed.

When the hole 20 is made, the concrete mixture 21b and the concrete mixture 11
) 1fr is supplied into the displacement body 6. Then, Si
2N3 is 11 Vis (Fig. 11) pulled up, concrete mixture 21 Vi skirt 2f: (Mi force is also considered) upward 111 push 1. Push concrete mixture 2
1 into the hole 2 () (this flows into the tubular pile 7) to meet the bottom part 22, and then the concrete mixture 21 is retreated from the hole. 23 flows inside the drill column l.

The filler material 23 includes dry and water-saturated sand, clay-poor mortar, electrically graded additives, and other suitable materials. Push the casing 4 into the filling material 23 and slide it along the slot 161 until it is at the protruding position.
opens and the filling material 23 flows into the hollow part 1 of the pile υ. in this case,
The skirt is used as a means of holding the tubular pile υ wall in VF6 and the filler material 23 (within the hollow part formed in this way). The skirt 2 is raised along with the device.

The skirt 2 mixes and holds the concrete mixture 21 and the light material 23 that are sent into the hole. ◎ If you want to set up 1 lls outside the tubular pile, please use Minato 117) *as appropriate) The material 26 (Figs. 12 and 13) is carefully fed in. Suitable materials for this purpose include concrete, compounded with wl11r binder, etc. In case of stiffness, the device can be raised by rotating it. The material 26 is the displacement body 6υ taper portion 92
) c) The ribbon is transferred from one hole to the inside of the ribbon ・In order to prevent the material from climbing up from the hole 20, the width should be at least 3 meters, but 1) Coughing 1st pile'I)g
Under construction (this may be corrected. This D correction is pile 7>@h匝,
dv insult, 1L praise given to the engineering from 'D taper and opening material V% note.

Scar) 22) The inner diameter is calculated from the following formula.

di=Dp-21 where DpVi pipe pile tubular dip, δ is pile 1122υ separation.

Using the new IID method, the conventional hole forming method fvj
! Improving the construction method for loose and water-rich piles that can result in mudflow in the VI area where the piles are driven in places. Hole formation method and pile construction. is stirred and the center of the hollow part is obtained.

Since the piles are constructed in holes with rammed walls, the pile's durability is improved.

By using this VC tube, a protective outer shell such as a corrosion-resistant shell can be constructed for a tubular pile.

As corrosion-resistant materials, various grades of historic concrete and polymeric materials are used in various combinations. Beaked tubular piles have a hollow section. The hollow part of the hole (gravel is filled from the bottom of the moss.The ground tamping area around the pile and the increase in
This is due to the fact that the ground is not excavated and is displaced in the direction of the hole. Furthermore, the ground tamping area and υ increase by 17) are due to the provision of an outer shell made by displacing the corrosion-resistant material into the wall.◎ Cast-in-place tubular piles in corrosive media The lifespan is longer than the outer corrosion resistant 7L1.

Hole υ formation knee "□, Pile υ manufacturing process by concrete driving, 4 and th position is 1 hole in the hole ■Outer corrosion-resistant shell υ
Fabricator f! ! ! 7)! Process υ - Efficiency is improved as soon as the hollow part is formed, so the concrete wall ti, the shore -
Since it does not break, the hollow part of the pile υ is formed as the concrete hardens.

Efficiency is 40-65 percent higher than conventional methods.

[Brief explanation of the drawing]

Figure 1 is a diagram of the pupil υ-print, Figure 2 is a general view similar to Figure 1 showing the upper tapered part υ outer helical ribbon surface, and Figure 3 is a diagram showing the position where the device forms a hole and admonishes. Vertical view, Figure 4 is a cross-sectional view taken at υ4-4- in Figure 3, Figure 5 is a cross-sectional view taken at υ5-5#I in Figure 3, and Figure 6 is a cross-sectional view taken at Figure 3 υ5-5#I.
Figure 7 is a sectional view taken along line υ7-7 in Figure 3, @8 is a cutaway view taken at line D8-8d in Figure 3, and Figure 9 is a cross-sectional view taken along line D8-8d in Figure 3. ii. Figure 1 shows the hole to be formed, and Figure 11 shows the initial crotch level when tubular piles are formed in the hole. Figure 12 is a diagram showing the process of forming a concrete tubular pile p and filling the hollow part of the pile with gravel, and Figure 13 is a diagram showing the completed tubular pile. l Nitrile column 2: Hollow skirt 3: Ground displacement ^ 4
: Tubular ground displacement body 6: Hollow ground displacement body 7: Cylindrical fixed size part 8: F direction tapered part 9: Upper tapered member l
o: Concrete feed pipe ll: Spider 2o: Hole
21: Concrete mixed material 23: Component. 1 person representing special fraud patent attorney Fumi Sato (1 other person)

Claims (1)

[Scope of Claims] l) The receptacle is inserted into the drill column l and the drill column lυ end and fixed to the axially movable space card 2,
Inject the hollow tapered ground displacement member 3'' that stretches the surface of the outer spiral ribbon, and then inject a light material that can move in the axial direction within the ground displacement device 3 and communicates with the drill column 5. □Includes tubular ground displacement body 4 with 17 input ports, #a
Construct a tubular pile υ from where it is placed *titt, spider 1l
ll'i was stuck with 11 drill pillars and 1 ll'i
It is equipped with a hollow ground displacement body 6 having a lower tapered portion 7, a lower tapered portion 8 having an outer helical ribbon gill surface, and an upper tapered portion 9. Pour concrete into the upper opening that communicates with the underground tatami and the hole formed by the underground tatami mat, seal the opening with 5 ribs in the skirt 2, and slide the skirt to open the opening corresponding to this. The vIk cast-in-place tubular pile construction device is patented as having a downward opening having a diameter as large as . 21 * Driving @ to form 1 hole in the ground, and after descending to the full depth to form the hole, retreat the device, fill 1 hole with concrete, and hollow out the concrete to be placed inside the hole. 1 to form the part tilIi □, and a hollow 1! +s4 In the method for constructing a pile υ Ic' consisting of filling with gravel material, a hole is formed from the receding step and a retreating step. At the same time, % cm of concrete is sent into the hole, a hollow part is formed, and this part is filled with gravel material. Construction work to form concrete that will be removed @ Pilings with amnesty if done one day in advance *
*Method 3) Simultaneously with the step of retracting the device from the hole, send the device into the mouth of the corrosion-resistant pipe hole, and when the V& A special claim characterized in that this change is 6γ - 2nd term tkokill! υ method.