JPH0328537B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for erecting a pole such as a lighting pole, in which the base portion is buried in the ground and is erected on the ground, and a foundation for erecting the pole.

"Conventional technology" Conventionally, when installing a pole, a large-diameter pile hole is drilled, a frame assembled using metal or wood, etc. is inserted into the pile hole, and the pole is inserted into the frame. After the embedded part was placed in place, concrete was poured, and once the concrete had hardened, the pole was erected above the ground.

Therefore, in order to construct this type of concrete foundation, it is necessary to go through the complicated process of assembling a frame on the ground and digging a large diameter hole in which to embed it. In order to build at an angle, supporting members must be attached to the poles to maintain that position until the concrete completely hardens, and the construction cannot be completed until the supporting members are removed, which lengthens the construction period. There was also a problem.

"Problems to be Solved by the Invention" The present invention simplifies the process of erecting poles into the ground, from installing the foundation to erecting the poles, and allows the entire process to be completed at the same time as erecting the poles. This was done to shorten the construction period.

Structure of the Invention ``Means for Solving the Problems'' The pole erection foundation of the present invention has a plurality of radially formed concrete cylindrical foundations 1 having an insertion hole 2 with a diameter larger than that of the poles. The steel resistance plate 9 is configured so that it can be inserted and removed only in the axial direction, and the bottom of the insertion hole 2 is formed in a conical shape, and the inner diameter of the insertion hole 2 is Three tightening bolts 5 that can be adjusted in and out in the direction are provided, and the resistance plate 9 stably supports the foundation body 1 in the soil, and the weight-shaped hole bottom and the tightening bolts 5 support the pole. After the pole a is erected and fixed at a predetermined angle, the gap d is filled with concrete e and solidified, and the pole a is erected.

"Function and Examples" The foundation body 1 inserted into the dug pile hole b is immovable in the soil because the driven-in resistance plate 9 is strongly supported by the counter pressure of the soil against the plate surface. The condition is reliable, and the work is easy because the resistance plates 9 are driven in one by one.

Also, when pole a is built into the foundation body 1, the lower end of pole a hits the bottom of the conical hole and is supported by it.
Since it is always located at the center of the hole bottom, the pole a can be fixed at a predetermined angle by protruding the tightening bolt 5 in the radial direction, and the angle adjustment is extremely easy.

After fixing pole a as above, gap d
Since the poles are filled with concrete e, there is no need for steps such as attaching and removing separate support members to the poles a until the concrete hardens, as in the conventional construction method.

An embodiment of the foundation for erection of the pole of the present invention will be described below with reference to the drawings.

In Figures 1 and 2, 1 is a bottomed cylindrical concrete foundation body with reinforcing bars installed;
A weight-shaped support surface 3 is formed at the bottom of the insertion hole 2, which has a larger diameter than the pole a to be installed.

Reference numeral 4 denotes bolt holes that are equally spaced screwed in the vicinity of the upper end of the base body 1, and tightening bolts 5, which will be described later and are screwed into the bolt holes 4, move in and out toward the axis of the insertion hole 2. Become.

Three engaging members 6 are fixed to the outer circumferential surface of the basic body 1 by bolts 8, and are arranged at equal intervals in the circumferential direction and extend from approximately the upper end to the midsection.

The engaging member 6 has an engaging edge 1 of a resistance plate 9, which will be described later.
0 can be slidably engaged only in the axial direction
is formed.

3 and 4 show a resistance plate 9 formed from a steel plate, in which the tip of a rectangular steel plate is obliquely cut off and one side is bent to form an engaging edge 10.

This resistance plate 9 has an engagement edge 10 that slides in the axial direction with respect to the basic body 1 in an engagement groove 7 formed in the engagement member 6, as shown in FIGS. 5 and 6. In this engaged and attached state, the resistance plate 9 is deployed in the radial direction.

Next, the method of erecting a pole according to the present invention will be explained with reference to FIGS. 7 to 10.

The foundation for erection described above is inserted by digging a pile hole b approximately corresponding to the length of the foundation body 1 as shown in Fig. 7, but at this time, it is possible to dig down a predetermined amount near the hole opening to form a step c. preferable.

The gap created between the pile hole b and the foundation body 1 may be filled after driving the resistance plate 9, but if the gap is too large, tilt the foundation body 1 to one side when driving the resistance plate 9. Since there is a risk of causing the soil to sag, it is preferable to fill it with soil before pouring.

Next, in order to more securely fix the foundation body 1 in the soil, as shown in FIG. and type it in.

The width of the resistance plate 9 is wider than the pile hole b, and most of it is driven into the soil that has not been dug down.
The resistance force applied to the plate surface is strong, and the foundation body 1 is reliably fixed in the soil.

Next, as shown in Fig. 9, insert the pole a into the insertion hole 2.
The respective tightening bolts 5 inserted into the hole 4 and screwed into the bolt hole 4 are made to protrude in the inner radial direction, and the pole a
Place it in contact with the outer periphery of the holder and tighten it.

In this construction of pole a, the lower end of pole a is supported by the cone-shaped support surface 3, so pole a is always located at the center of the hole bottom regardless of the outer diameter of the lower end. By adjusting the amount of protrusion of the three tightening bolts 5, the erection angle of the pole a can be adjusted.

Finally, as shown in FIG. 10, concrete e is poured into the gap d between the insertion hole 2 of the foundation body 1 and the pole a, and the step c is backfilled with soil.

Concrete e needs to be left to cure for at least 24 hours until it completely solidifies, but in the present invention, pole a is immovably fixed by tightening bolts 5, and concrete e is poured until it is finished. The entire process is completed at the ivy stage.

"Effects of the Invention" As explained above, according to the method of erecting a pole of the present invention and the foundation for erecting the same, the foundation body 1 is installed at the same time as the driving is completed due to the resistive pressure of the resistance plate 9 which is driven and attached after the foundation body 1 is inserted. The insertion hole 2 of the foundation body 1 can be immobilized in the soil.
The pole a to be erected can be easily fixed by simply tightening the tightening bolt 5.

That is, in the present invention, the gap d between the pole a of the insertion hole 2 is filled with concrete e.
There is no need to maintain the erection angle of pole a until the concrete hardens.
The step of removing the supporting member of pole a after it has hardened is also omitted.

Furthermore, in the present invention, since the resistance plates 9 are driven one by one, the driving work can be extremely light compared to the resistance pressure applied after construction.

Furthermore, in the present invention, after adjusting the erection angle of the pole a with the tightening bolt 5, the concrete e is
Because it is fixed in place, it is easy to install and can be done by one person.

In addition, the pole erecting foundation of the present invention has features such as a simple structure and easy handling on site, and the practical effects after implementation of the present invention are extremely large.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIGS. 1 and 2 are a plan view and a front view of the basic body 1, respectively, and FIGS. 3 and 4 are a plan view and a side view of the resistance plate 9, respectively. It is a diagram. 5 and 6 are a plan view and a front view, respectively, showing the state in which the resistance plate 9 is attached to the basic body 1. FIG. 7 to 10 are side views for explaining the method of erecting the pole, and only FIG. 10 shows the foundation body 1 in longitudinal section. Description, 1... Foundation body, 2... Insertion hole, 3... Support surface, 4... Bolt hole, 5... Tightening bolt, 6...
...Engagement member, 7...Engagement groove, 8...Bolt, 9...
...Resistance plate, 10... Engaging edge, a... Pole, b...
...Pile hole, c...step, d...gap, e...concrete.

Claims (1)

[Scope of Claims] 1. A bottomed cylindrical foundation body having an insertion hole larger in diameter than the pole to be erected is inserted into a dug pile hole, and the foundation body is slid only in the axial direction around the circumference of the foundation body. A plurality of steel resistance plates each having a removable engagement means are driven while being engaged in sequence, and the foundation body is supported in the pile hole by the counter pressure in the direction of the plate surface of the resistance plates. After fixing, with the pole inserted into the insertion hole, tighten the pole with a tightening bolt that is screwed in advance near the upper end of the base body so as to move in and out in the axial direction. A method of constructing poles by filling and hardening concrete into the gaps between the poles. 2 A plurality of tightening bolts whose ends protrude in the axial direction are screwed into the upper end of a cylindrical reinforced concrete foundation body having a weight-shaped bottom, and the axial direction is configured on the circumferential side of the foundation body. 1. A foundation for erecting a pole, characterized in that an engagement edge formed on one side of a resistance plate engages with a plurality of guide engagement grooves extending in the axial direction so as to be slidable in and out of the plate.