JPS61191727A - Method and apparatus for self-supported preventer for settlement of pole - Google Patents

Abstract

PURPOSE:To shorten the time period of construction as well as reduce the cost of construction by a method in which the surrounding ground of a pole is excavated, a housing cylinder integrated with a guider is inserted and set with a pole, a resistor is placed and connected to the guider, and an upper cover is connected. CONSTITUTION:The surrounding ground surface of a pole 13 is excavated down to an area and depth corresponding to an upper cover D to be formed. The surrounding area of the pole 13 is further excavated and a housing cylinder A integrated with the guider B is inserted and set in the pit. Resistors C are orderly inserted and placed into the guider B, and the upsides of the guider B and the resistors C are evenly connected. The upper cover D is connected to the upsides of the resistors C, and a quick-setting reinforcing concrete is placed into the spaces of the cylinder A and the pile 13 and hardened. The excavating volume of the ground can thus be reduced, the amount of steel materials to be used can be reduced, and the cost of construction work can be cut down.

Description

[Detailed Description of the Invention] A. Field of Industrial Application Utility poles, which serve as supporting bodies for overhead distribution lines, have gradually increased in capacity due to the gradual increase in power consumption and the rationalization of distribution lines. Due to reasons such as increased weight and the increasingly complex environment surrounding utility poles, utility poles in particularly weak areas need to be self-sustaining without relying on branch lines, and to prevent the phenomenon of subsidence, which has become particularly prominent in recent years. The means became necessary.

Conventional technology Various methods of self-supporting utility poles that do not depend on branch lines have been researched, but only one method has been pursued, either self-sustaining to prevent collapse or subsidence-proofing to prevent subsidence. No innovative means have been developed to simultaneously process both.

Therefore, the method currently in use is a primitive construction method that has remained unchanged for over 20 years, in which a large excavation is made around the length of the underground section of the utility pole to a diameter several times the outside diameter of the utility pole, and the excavation is filled with concrete and allowed to harden. The problem is dealt with by enlarging the diameter of the underground part of the utility pole to the planned amount, or by surrounding it with large dust and sandbags to strengthen the surrounding soft soil.

Problems to be solved by the invention All of the above methods require considerably high material costs and a considerable amount of time for construction, such as two days in the case of spring areas or collapsible soils. This is by no means an unusual situation, and since the hole is about 3m deep, great care must be taken to prevent danger at all times.

This kind of situation has traditionally been overlooked due to the small amount of demand, but due to the recent environment as mentioned above, there is an urgent need for a solution, and now the purpose is to be solved more cheaply, quickly and safely. The means by which this was achieved has come to be raised as a serious issue.

20 Means for Solving the Problems In order to meet such demands, the present invention first reduces the surface area of the ground around the utility pole to a depth that is necessary in view of the surrounding environment, that is, a depth that does not pose a hindrance to cultivation in agricultural land such as fields. 30aa
- If it is on a ship road, the excavation will be carried out to a depth of about 50cm, which will not interfere with paving work, etc., and the area will be comparable to the surface area where a subsidence prevention top cover will be installed on a utility pole in the future. A rectangular storage tube that hugs the utility pole from the ground and is firmly integrated with the utility pole is attached to the utility pole, and the storage tube is used as a base and resistors that have sufficient resistance against lateral pressure are attached to the four sides of the tube. After pouring and integrally connecting each resistor with the storage tube, a top cover body having an area that can completely prevent the utility pole from sinking is also firmly connected to the upper side of each resistor, and the utility pole and the storage tube are further connected to each other. The large gap between the cylinder and the cylinder is filled with rapidly hardening and strong concrete, which is used to harden the cylinder. It is integrally connected to the utility pole via the cable to form a self-supporting subsidence prevention means.

E. Operation and Examples The structure of the present invention will be explained below with reference to the attached drawings.

In the first open plan view, (11 is a storage plate made by bending one steel plate at right angles from the center of its length,
1 has both ends bent at 45 degrees to form joint sleeves (2), and two such storage plates (1) are prepared and the joint sleeves (2) are made to coincide with each other to adjust the height. Connect the upper and lower parts with bolts to form a square shape and make it into a storage cylinder (A).
However, the square plan area must have a margin calculated with respect to the cross section of the utility pole, and the height must be such that it will be possible to establish a joint condition with each subsequently installed member. Must not be.

The second side view and the side view shown in Figure 3 show the guide body (B), which has a length that matches the height of the storage tube (A). A coupling hole (5) is drilled at the upper end of the upper guide surface (4), which is formed by forming a fitting groove (3) and a guide surface (4) such that a steel plate can be shown in the figure.

Eight such guide bodies (B) are prepared and fixed at the same position and at equal intervals on each of the four sides of the storage tube (A) as shown in the 4th national affairs map and the side view in 5th figure. be.

This shows the resistor (C) with the side view according to the 6th country hand view and the side view shown in FIG. The resistance plate (6)
In addition, the respective ends of the resistance plate (6) are bent so as to be on a line with each other to form a fitting sleeve (7), and each resistance plate (6) is also formed into a reinforcing plate (B). The central part is reinforced and fixed as one piece, and the ■-shaped center part and each reinforcing plate (B
) A tightening ring (9) is fixed on the outer circumferential surface of the fixed part.
The fitting sleeve (
7) and insert the respective resistance plates (6) and guide surfaces (4).
Since they are placed in the ground in the state shown in Figure 13 with the text guide body (B) and resistor body (C) in close contact with each other, it is natural that they should be constructed so that they match. With the upper sides of the resistor plate (6) aligned, coupling holes (5) are also formed on the surface of the resistance plate (6) in areas that coincide with the coupling holes (5) drilled in the guide surface (4).

Next, the side view according to the 8th country hand drawing and FIG. A reinforcing plate (11) is fixed to the top to strengthen it, and a top cover reinforcing plate (12) is fixed to the middle part between the top and bottom sides for further reinforcement. Then, as shown in Fig. 15, combine the four resistors (A) onto each resistor (C) in the state shown in Fig. 13.
A large square plate is formed on the outer periphery of the resistor (C), and since each plate is to be integrally connected to the resistor (C), the same plate is formed on the inclined reinforcing plate (11) that is in close contact with the resistor (C). The necessary amount of connecting holes (5) are drilled at the positions so that they can be connected to each other with bolts and nuts, and the tightening ring (5) of the resistor (C) is
A coupling hole (5) is also drilled in a portion corresponding to 9), and this is also machined so that it can be integrally coupled to the resistor (C) with a bolt/nut.

The top cover (CD), which is formed into a square by combining four parts, may be required to have a rectangular shape depending on the environment of the construction site, but in such cases, the top cover (D
) should be transformed.

In the construction method of the present invention, the utility poles (13
) is comparable to the planar area of the upper cover body (D) to be formed in the future, and the necessary environmental depth is around 50 cm if it is on a road, so that it does not interfere with paving work, or if it is on general agricultural land. Excavate to a depth of about 30 cm, and further excavate the center of the excavated ground to a state where the storage tube (A) can pass through, and use each storage plate (1) as a storage tube (A) by holding the telephone pole (13). After connecting, the resistor (C) is inserted into the guide body (B), and the upper side of the resistor (C) is attacked and guided as shown in Figs. 12 and 13. The resistor (B) and the resistor (C) are placed until their upper sides coincide, and the connection of all the resistors (C) is completed by the process of connecting each connecting hole (5) with a bolt and nut. At this point, the excavated ground was compacted and leveled so that it coincided with the upper side of the resistor (C), and the upper cover body (D) was placed on top of each resistor (C). At the same time as bolts and nuts are connected to the tightening ring (9), bolts and nuts are also connected to each upper cover body (D), and as a final step, the gap created between the utility pole (13) and the storage tube (A) is rapidly hardened. Strong concrete is injected and hardened, and with the above, the utility pole (13) has a resistor (C) and a top cover (D) each having a sufficiently calculated lateral pressure resistance and sinkage resistance at the ground surface. Storage tube integrated with (A)
and reinforced concrete) (14), it will be completely integrated, and the top of the top cover (D) will be reclaimed and leveled to the same level as the surrounding ground surface and everything will be completed.

Effects of the Invention As described in detail, the present invention has the following advantages compared to the prior art: 1. The soil excavation capacity is overwhelmingly small and the excavation depth is at the surface of the ground, so it is suitable for use in common spring water areas. However, since it can be constructed with almost no impact and the time required for construction is less than one hour, the construction labor costs are surprisingly low.

2. The amount of steel required is the minimum required for the structure, and does not require particular precision in processing, so the manufacturing cost is low.

3. The resistor (C) has a sufficient area, and since it is a pouring method, it makes full use of the existing compacted soil, and the upper cover body (D) combined with the resistor (C) has a suitable area. Since the site is placed on thoroughly compacted and leveled soil, each resistor (
By adding the pressure resistance of C), an extremely strong self-sustaining anti-sinking means is established.

4. The conventional method of excavating the entire length of the underground part of a utility pole and filling it with concrete requires a huge amount of concrete, so expensive rapid hardening reinforced concrete cannot be used and ordinary concrete cannot be used. Since it has to be used, a curing period of at least two days is required, and temporary maintenance means are required during the curing period, which is extremely complicated. It is possible to use rapidly hardening reinforced concrete, which makes it extremely convenient to complete construction within about 30 minutes, which is the hardening time of rapidly hardening concrete.

5゜Also, the most important effect is that in the case of new utility poles, the conventional technology is relatively free of danger because it is a single unit without any wires attached to it, but in the case of existing utility poles with wires still attached, the underground part of the poles can be removed. Excavation of a large size means that it must be completely isolated and unprotected during the construction period, so the temporary maintenance means must be extremely careful, but in the present invention, the amount of surface excavation is extremely small as mentioned above. Therefore, there is no danger of that happening.

This resulted in the effects listed above.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view of the storage cylinder (^), FIG. 2 is a plan view of the guide body (B), and FIG. 3 is a side view. FIG. 4 is a plan view of the guide bodies (B) fixed to the storage tube (A), and FIG. 5 is a side view of the storage tube (A). FIG. 6 is a plan view of the resistor (C), and FIG. 7 is a side view of the resistor (C). FIG. 8 is a plan view of the upper lid body (D), and FIG. 9 is a side view of the same. 10 to 15 show the construction state of the present invention. l: Storage plate 10: Top cover plate 2: Connection shaft 11: Reinforcement plate a: e: Matching groove 12: Top cover reinforcement plate 4: Guide surface
13: Utility pole 5: Connection hole 14: Reinforced concrete 6: Resistance plate A: Storage cylinder 7: Fitting sleeve B: Guide body 8: Reinforcement plate C: Resistance body 9: Tightening ring D: Top cover body and above

Claims (1)

[Claims] One or two storage plates (1) are connected with bolts and nuts to form a rectangular storage cylinder (A), and a guide body (B) is provided on the outer surface of the four sides.
) are respectively fixed, the resistor (C) is inserted into the guide body (B) so that their upper sides match each other, and the guide body (B) and the resistor body (C) are connected with bolts and nuts. Each resistor (
On the upper side of C), there are upper lid bodies (D) surrounding the storage tube (A).
), and connect the resistor (C) and the top cover (D) with bolts and nuts, and with the above, the four parts of the storage cylinder (A), the guide body (B), the resistor (C), and the top cover (D) are assembled. A self-sustaining anti-sinking device for a utility pole, characterized in that the utility pole (13) is made to stand on its own and prevent it from sinking by combining the following. 2. Dig a hole around the utility pole (13) to a depth comparable to the area of the top cover (D) and to a depth necessary for the surrounding environment, and then dig a storage tube (13) around the utility pole (13) from the bottom of the hole. Drill a hole with a depth comparable to the area and height of A) and install a utility pole (1
3) Storage tube (A) integrated with guide body (B)
Then, the resistor (C) is successively inserted into each guide body (B) and the resistor (C) is inserted into the guide body (B) and the resistor body (C).
After aligning the upper sides of the resistors (C) and connecting them with bolts and nuts, the upper cover body (D) is also connected with bolts and nuts on each resistor (C), and as a final step, the storage tube (A) and the utility pole (1) are connected.
3) The upper lid body (D) and the resistor body (C) are integrally combined by injecting and hardening rapidly hardening reinforced concrete into the void.
The above four parts of the guide body (B) and storage tube (A) are completely integrated with the utility pole (13), thereby making the utility pole (13) independent and preventing it from sinking. A unique method of making utility poles self-supporting and anti-sinking.