JP2681270B2 - Pile holding device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a device for holding a pile to be inserted into an excavation hole in the ground. [Prior art] As a low-pollution construction method for pile sunk, pre-boring construction methods such as cement milk construction method are widely adopted. In these construction methods, piles with two or more joints are It is necessary to securely hold the verticality by the method. Conventionally, there are two methods for holding such piles: a wire rope winding method and a steel band tightening method. [Problems to be solved by the invention] A method using a wire rope is to wind a rope called a table-attached wire around a head of a pile to be held and receive the end of the wire rope with a tree or the like, or Although it is tied to the anchor and held, this method makes it difficult to maintain the verticality of the pile because the wire rope is pulled up and pulled down, and the pile that holds it is bent. There are drawbacks such as. Also, with the method using a steel band, the band is held by the frictional force by tightening it, so if mud or oil is attached to the outer periphery of the pile to be held, the frictional force will not work and the gravity of the pile will be heavy. There is a drawback that the degree of danger increases. The present invention is intended to solve the above-mentioned conventional drawbacks, improve the safety in terms of construction, and improve construction efficiency. [Means for Solving Problems] The configuration of the present invention for achieving the above-mentioned object will be described with reference to the drawings corresponding to the embodiments.
An outer frame body in which the semi-annular bodies 1a and 1b each having an inclined funnel-shaped surface a on the inner periphery thereof are integrally rotatably connected to each other at one end and separably fixed at the other end. A
And, the outer surface is an inclined surface along the inner peripheral surface of the semi-annular body 1a, 1b, a large number of irregularities 8,8 are formed on the inner side surface, a large number of suppressing pieces 10,10 on the upper surface in the circumferential direction. It is composed of a pair of flexible arc-shaped inner frame bodies B, which are spaced apart along the outer surface and have a large number of vertical dividing grooves 9, 9, and are separated from each other. The springs 11 and 11 are attached to the insides of A and A, and are elastically fitted vertically slidably by the springs 11 and 11 interposed between the upper surface of the outer frame A and the restraining pieces 10 and 10 of the inner frame B. It is characterized by that. [Operation] The device of the present invention is a semi-annular body 1a, 1b in which the inner frame bodies B and B are fitted.
Is attached to the outer peripheral surface of the pile 13 and the wedge holes 4 of the semi-annular members 1a and 1b are attached.
Drive the wedges 5 into a and 4b and tighten them. As shown in FIG. 7, when the weight of the pile 13 is applied as shown by the arrow b, the inner frame B is pulled by the pile 13 and a pressing force acts as shown by the arrow C. Therefore, the inner frame body B slides along the inclined surface a of the semi-annular bodies 1a and 1b, and by the action, a horizontal force as indicated by the arrow d due to the wedge effect of the inner frame body B is generated, and the tightening force of the pile is tightened. It becomes. Also, this device is a semi-annular body 1a if the wedge 5 is removed,
1b is expanded and can be removed from pile 13. At this time, the inner frame B is released from the pushing-down force of the pile 13, and is restored by the action of the spring 11. Embodiment An embodiment of the present invention will be described below with reference to the drawings. In the figure, A is an outer frame, and the semi-annular members 1a and 1b are integrally connected to each other by a pin 2 so that the semi-annular member 1a can be opened and closed. At the other end of 1b, connecting pieces 3a and 3b are formed so as to be polymerized with each other when they are closed, and the connecting pieces 3a and 3b are provided with wedge holes 4a and 4b which are connected to each other at a polymerization position. By inserting the wedges 5 into the polymerized wedge holes 4a and 4b, the closed pair of semi-annular members 1a and 1b are integrated to form an annular outer frame A.
Is formed. Also, the semi-annular ring 1a, 1b
Suspending ears 6, 6 used for lifting the outer frame are provided on the outer side of the outer frame. Then, the inner peripheral surfaces of the semi-annular members 1a, 1 are formed into a funnel-shaped surface a which is inclined so as to narrow downward, and
A hook 7 having a hook-shaped cross section is erected on the outer side of the upper surface along the circumferential direction. Reference characters B and B denote arc-shaped inner frame members fitted along the inner peripheral surfaces of the respective semi-annular members 1a and 1b of the outer frame member A, and the outer peripheral surfaces thereof are the inner parts of the semi-annular members 1a and 1b. It is an inclined surface that narrows downwards along the peripheral surface, and a large number of irregularities 8 and 8 are formed on the inner surface side.
Are formed. Further, a large number of flexible vertical dividing grooves 9, 9 are provided at intervals on the outer surface side, whereby the inner frame body B can be deformed. Further, on the upper surface portion of the inner frame body B, an L-shaped restraining method 10 in which the upper portion projects outward,
A large number of 10 are provided at intervals in the circumferential direction. Then, the inner frame body B is, as shown in the figure, a semi-ring body 1.
It is attached to the inner peripheral surface of a, 1b, and the outer ends of the restraining pieces 10, 10 are thrust into the locking ridges 7 of the semi-annular bodies 1a, 1b, and the respective restraining pieces 10 and the semi-annular body 1a, Springs 11, 11 are interposed between the upper surfaces of 1b. As a result, the inner frame body B is always in a state in which the pressing piece 10 is pressed into contact with the upper end portion of the locking strip 7 by the elastic force of the spring 11 (see FIG. 4). When the pushing force acts, it descends against the elasticity of the spring 11, and the funnel-shaped surface a of the slanted inner circumference of the semi-annular bodies 1a and 1b.
When it is released more than the pushing-down force, it will return to any position by the force of the spring 11. Next, a description will be given of a usage example of the device of the present invention having the above-described structure. As shown in FIG.
13 is suspended by a wire 14, and as shown in FIGS. 9 (a) and 9 (b), the device of the present invention is fitted around the pin 2 as a double opening and externally fitted to the pile 13 to close the semi-annular ring 1a, 1b. Wedge holes 4a, 4b
The wedges 5 are driven into the inner frame bodies B and B so that they are sufficiently adhered to the outer peripheral surface of the pile 13. Then, as shown in FIGS. 10 (a) and 10 (b), a receiving material 15 such as a square or H steel material is laid under the device of the present invention to support both the pile and the device, and the wire 14 is removed.
As a result, the weight of the pile is applied to the device, so that the inner frame B,
The wedge effect of B occurs, the pile and the device are completely integrated,
The pile 13 in the drill hole will be held directly on the water. After that, the gap between the pile 13 and the excavation hole 12 is filled with the grout material 16, and the digging of the pile is completed. [Effects of the Invention] As described above, the pile supporting device of the present invention is configured such that a pair of semi-annular members having a funnel-shaped surface inclined to the inner periphery are rotatably coupled to each other at one end. , The outer frame body that can be detachably fixed at the other end, and the outer surface is an inclined surface along the inner peripheral surface of the semi-annular body, a large number of irregularities are formed on the inner side surface, and a large number of them are formed on the upper surface portion. And a pair of flexible arc-shaped inner frame bodies having a plurality of vertical split grooves formed on the outer surface of the outer frame body. Since it was attached to the inside of the, and was elastically fitted vertically by a spring interposed between the upper frame of the outer frame and each restraining piece of the inner frame, it can be attached to and removed from the pile.
It can be performed by a very simple operation of hammering in or pulling out wedges on the other end of the pair of semi-rings, and
Due to the weight of the pile, the wedge support effect of the inner frame ensures the support function of the pile, and even if mud or oil is attached to the outer periphery of the pile, the wedge function impairs the support function. There is no. In addition, since the wedge effect works evenly on the pile, the verticality of the pile is maintained, correct pile construction can be performed, and the work safety is high.
It has many excellent effects.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view showing an embodiment of the device of the present invention, FIG. 2 is a side view of the same, and FIG. 3 is a plan view showing a state where the other end is opened. 1 is a sectional view taken along the line AA of FIG. 1, FIG. 5 is a plan view of a semi-annular pair, FIG. 6 is a plan view of an inner frame, FIG. 7 is an explanatory view of operation, and FIGS. FIG. 8 is a side sectional view showing a state where a pile is inserted into an excavation hole, FIG. 9 (a) is a sectional side view showing a mounting side of the device of the present invention, and FIG. Fig. 10 (a) is a side sectional view showing the device and the pile supported by the receiving member, and Fig. 10 (b) is the same plan view. A ... Outer frame, B ... Inner frame 1a, 1b ... Semi-annular body, 2 ... Pins 4a, 4b ... Wedge hole, 5 ... Wedge 7 ... Locking strip, 8 ... Unevenness 9 ... Vertical groove, 10 ... Holding piece 11 ... Spring, 12 ... Drill hole 13 ... Pile

Claims (1)

(57) [Claims] A device for externally fitting a pile to be inserted into a drilling hole and supporting it while maintaining the verticality of the pile, and integrating semi-annular bodies with a funnel surface inclined on the inner circumference at one end of each other. An outer frame body that is rotatably coupled and whose other end is separably fixed, and an outer surface that is an inclined surface along the inner peripheral surface of the semi-annular body, and a large number of irregularities are formed on the inner surface. Formed, and a large number of restraining pieces are provided on the upper surface portion along the circumferential direction,
A flexible arcuate inner frame body having a large number of vertical split grooves provided on the outer side surface is integrally formed, and the inner frame body is abutted on the inner side of the outer frame body, and at the same time as the upper surface of the outer frame body. A holding device for a pile, characterized in that it is elastically fitted vertically and slidably by springs interposed between respective restraining pieces of the frame body.