JP2005299227A - Under-bracing - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an under-bracing which ensures the verticality of a pole and supports the pole without taking various countermeasures, and contributes to efficient execution of pole construction work. <P>SOLUTION: The under-bracing is mounted on a lower portion of the pole, and embedded in the ground together with the lower portion of the pole when the pole is erected. According to the structure of the under-bracing, a bottom surface S of the under-bracing is inclined downward at a location that is farther away from the pole 7. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention mainly relates to a rooting used for maintaining a supporting strength on soft ground when an electric pole, an indicator lamp, an electric lamp or the like is erected.

In general, the root skein is used for the purpose of ensuring sufficient support strength when various poles such as utility poles, indicator lights, and signals are erected on soft ground. Specifically, an L-shaped or cylindrical concrete block is attached to the lower side of the column with a U-bolt or the like so as not to be detached, and then the column in the above state is inserted into a drilling hole provided in the ground. Furthermore, it is widely used by the method of backfilling mountain sand and the like.
JP-A-6-173226

  Since the conventional root shank is mainly made of concrete, its weight increases, and from the viewpoint of workability, it has been studied to form the root shank from a synthetic resin for the purpose of reducing the weight. However, when the weight of the root shank was reduced, the weight was drastically lighter than that made of concrete, so that after the construction of the pillar, for example, a force that tilted the strut on the side of the root shank was added. In this case, as shown in FIG. 4, the inconvenience that the root shank 11 and the support column 17 are lifted by the drag from the ground is predicted.

  The present invention has been invented in view of the above-mentioned problems, and can support and support a column in a vertical state without performing various countermeasures that require labor, and can efficiently perform building column construction. It is to provide a root skein.

  The present invention is a root skein that is attached to the lower part of a support column and is buried in the ground together with the lower part of the support column, and the bottom surface of the root skein is inclined downward as the distance from the support column increases. It is characterized by being.

  A support | pillar is the concept containing all support members, such as a utility pole, an electric lamp, an indicator lamp, a signal, for example. In addition, tilting downward means that when the root skein is buried, the part away from the support on the bottom surface of the root skein should be in a state of biting into the ground. The whole or a part of the lower bottom surface is formed into a taper shape, or one having an R-gradient curved downward as it gets away from the column side. Furthermore, the raw material for the root skein is not particularly limited, but it is desirable to use waste plastic or the like from the viewpoint of workability (reducing the weight of the skein) at the time of mounting on the support or reuse of resources.

  The root shank formed in this way is buried in the ground together with the upright of the pillar at the time of building pillar work, but after the pillar, for example, when the pillar leans to the side where the root shank is installed, The part away from the column side will bite into the underground soil. As a result, the bottom bottom surface of the root shank prompts the drag from the ground to work downward, and as a result, the column can be erected vertically on the ground.

  According to the present invention, since the inclination of the column can be suppressed even after the construction of the pillar, the column can be erected while being kept vertical for a long time.

  Moreover, if waste plastic is used as the raw material during the production of honkake, it can contribute to resource saving. In addition, since the raw material of the root is synthetic resin, the weight can be drastically reduced as compared with conventional concrete, and as a result, the efficiency of building column work can be improved.

  Next, an embodiment of the rooting of the present invention will be described below.

Here, first, a typical example of a construction work using a skein will be briefly described.
First of all, in building pole construction, a process called piercing is performed, but when erected poles on soft ground that uses root skein, the standards vary widely depending on the region and construction company, etc. A round hole having a depth of about 1/6 of the total length of the slab is excavated by an earth auger, and a stepped hole is provided to allow rooting together with the round hole. Next, a root is fixed to the lower part of the electric pole with a U-shaped bolt, and further, the electric pole is lowered in a state of standing in the round hole by the digging pillar car in which the electric pole is suspended. Then, at the stage where the bottom position of the skein coincides with the stepped hole, the mountain sand prepared for backfilling is backfilled, and the operation is completed.

After receiving the explanation of the above-mentioned building pillar construction, the explanation will shift to a concrete configuration explanation of the root of the present invention.
As shown in FIG. 1, the main skein includes a mounting wall 3 that abuts along the standing direction of the power pole 7, a contact wall 2 that is bent toward the direction away from the power pole 7 at the lower end of the mounting wall 3, and a mounting wall 3 and a beam 4 laid across the abutting wall 2. The mounting wall 3 is positioned on the power pole 7 side between the two fin portions 5 and 5 extending in the vertical direction in the middle portion on the back side of the mounting wall 3, and the utility pole is provided with a U-shaped bolt 6. It is fixed to the 7 side so that it cannot be detached.
In the figure, G indicates the ground surface.

  Further, as shown in FIG. 2, when the utility pole 7 is erected, the abutting wall 2 is slightly separated from the utility pole 7 by a lower bottom surface S that is a bottom-side abutting portion with the underground soil F from the horizontal position L. It forms so that the taper shape which descends according to this may be made. Specifically, the abutment wall 2 is integrally formed so as to be bent at a right angle from the mounting wall 3, but the thickness of the mounting wall 3 is formed so as to gradually decrease from the upper side to the lower side. When the electric pole 7 is erected, the lower bottom surface S is formed to have a tapered shape that descends with distance from the electric pole 7. The slope angle of the tapered portion of the lower bottom surface S is such that even if the mode of the utility pole 7 to which the main skein is attached is such that the diameter expands from the upper side to the lower side when standing up, the lower bottom surface S is The angle is set so as to maintain a taper shape that descends with increasing distance from the utility pole 7 side.

The main skein is an integrally molded product of the abutment wall 2, the mounting wall 3, the beam 4, and the fins 5 and 5 made of synthetic resin. As the raw material, for example, a distribution line protective tube, an insulation cover, an instrument storage box Waste plastics obtained from used resin products for transmission and distribution lines such as As a result, the weight of the main skein can be drastically reduced, the burden on the operator when attaching the skein to the utility pole 7 is reduced, and the efficiency during the construction of the pillar can be improved.
In addition, the raw material of the main root skein is not limited to waste plastic, it may be formed of a new synthetic resin, may be formed of concrete as usual, and further, an aluminum alloy or the like can be applied. .

  And, as shown in FIG. 3, as shown in FIG. 3, the location away from the utility pole 7 on the lower bottom surface S of the contact wall 2 gradually bites into the underground soil F after forming the root as described above. If the power pole 7 tilts to the side where the root skeke is attached, the drag from the underground soil F is urged diagonally downward, and as a result, the drag that works in the direction to lift the root skein is reduced. For example, the electric pole 7 can be easily erected while being kept in a vertical state simply by lowering the electric pole 7 to which the main skein is attached into the excavation hole.

It is a perspective view which shows the attachment state to the utility pole of the root according to this invention. It is a side view which shows the use condition of the root shank by this invention. It is a side view which shows the state in which the drag from underground soil was added with respect to the main root skein at the time of building pillar construction. It is a side view which shows the state in which the drag from underground soil was added with respect to the root shank at the time of the conventional pillar shank construction.

Explanation of symbols

7 Telephone pole (post)
S Bottom bottom

Claims (1)

It is attached to the lower part of the column, and when the column is erected, it is a root skein buried in the ground together with the lower part of the column,
The root shank characterized in that the bottom bottom surface (S) of the root shank is inclined downward as it is away from the support post (7).

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