JPS6062330A - Strengthening and setting of stay anchor - Google Patents

Abstract

PURPOSE:To easily set stay anchors without causing the lowering of bearing capacity by a method in which a stay anchor is set in a pit drilled by an earth auger, and cement solution is injected to the lower part of the pit to form a concrete cylinder embracing the anchor. CONSTITUTION:A curved resistance plate-type stay anchor is inserted into a pit 6 drilled by an earth auger, and the curved resistance plates are greatly expanded by striking the upside of the plates 1 by a long-knobbed hammer from the ground's surface and driven into the surrounding wall of the pit 6. A cement solution having a high permeability into soil when mixed with water is injected into the pit 6, where the cement solution is partly permeated into the surrounding wall of the pit 6 to form a concrete cylinder 13 and its upper part is embedded with soil. The cost of construction can thus be saved, and bearing capacity once reduce due to the formation of the pit 6 can be recovered and increased by the formation of the cylinder 13.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is mainly concerned with the use of stays for preventing the collapse of utility poles.
This invention relates to a non-car.

Currently, most of the utility poles used for power and communication facilities are resistant to typhoons and snow damage due to the use of drive-in stay anchors, which are installed 2 mPj underground from the ground surface. Visit to Ik Ik 6h7 As the power distribution line maintenance and rationalization of the maintenance of the power distribution line increases, the stay anchor is required to further increase its tensile strength, and on the other hand, the current economic situation Due to the deterioration of the environment, a new situation has arisen that calls for further reductions in product prices and simplification and rationalization of construction labor costs.

Currently, the method of driving stay anchors is mostly carried out manually by two workers, but it requires quite a lot of labor, and with the trend of labor saving, it is becoming more and more mechanized. Due to the work environment where the work was carried out while moving vigorously in pursuit of power poles that were standing all over the place despite being subjected to various inspections, the target driving machine was loaded onto a small work vehicle along with various outside line construction materials used for this work. Due to the nature of the system, which requires both size and weight reduction as well as sufficient impact pressure input, it has been difficult to develop it, but on the other hand, the pole erection work is Due to the depletion of six sources compared to the wooden pillars of the past, most of the pillars evolved into concrete pillars with several times the amount of f[2] compared to the wooden pillars of the past, and were also equipped with a C earth auger in the hope of streamlining work safety. The need for specialized pole-erecting vehicles quickly became widespread, and today, pole-erecting vehicles have become an indispensable maintenance vehicle, whether by small construction companies or by means such as leasing.

When it comes to this type of car, a labor-saving method that utilizes a stay anchor car and a pole-erecting car as a measure for wide-area use of the pole car should be considered for +8 Kyo2, and the results of various studies are detailed below. Type-C has been developed.

The first thing that was developed was the curved resistance plate system shown in Figures 1 to 4 of the accompanying drawings. This shows the state where the curved resistance plate (1) is expanded.
The structure of 1) is to make the full length of the 1 arc center line of the old slender steel plate into a rib (2), and open the upper 8 m long center point of the extruded steel plate so that the upper plate (5) can pass through. The opening is then bent into two lobes as shown in Figure 2, and one of the lobes is curved towards the tip from the middle of its length, and this is called the lower edge. Attach the disk-shaped bottom plate (4) to the upper part of the board (3), and attach the ribs (protruding and expanding
Jl]-υ is fixed by 2, and Shibetsu 1i (51 is fixed by cutting into the center upper side of the board (3).

As shown in Fig. 2, such a 414-frame curved resistance plate type stay anchor has the curved resistance plate + 1) in the jointly closed state, and passes through the upper drawing plate (5) through the ζ opening to the tip. The curved surface of the Rizo (2) is placed on the inclined surface of the substrate (3) and engaged, and in this engaged state, the hole (6) is excavated with an earth auger as shown in Fig. 1. After entering the hole and placing it on the bottom of the hole, apply downward pressure to the upper side of the curved resistance plate (1) using a long-handled hammer from above the ground surface to "detach the curved part of the curved resistance plate (υ!
It is inserted into the side wall of the m-hole (6) and expanded, and the excavated hole is backfilled to prepare for separate loading.

Next, the horizontal resistance plate type stay anchor will be explained with reference to Figs. Although it does not show a fixed shape, its structure is an integrated structure in which a channel f9) of sufficient strength is solidified over the entire surface of the disk-shaped receiving plate (10) on the center line of the plane corresponding to the diameter of the earth auger excavation hole. In addition, the receiving plate (10
) and the horizontal resistance plate (7), which is a circular plate with the same diameter, are arranged so that they face each other and can freely rotate.
The horizontal resistance plate (7) for people who are pivoted in a common manner on 0) and rotates at the same time in a counterposition has the required amount of the outer peripheral surface cut out, which would otherwise be a hindrance, and furthermore, For the purpose of reinforcing the strength of the flat plate, a reinforcing plate with a truncated conical shape (
8) by cutting out the portions that protrude from the circumferential surface of each horizontal resistance plate (7), and using a structure in which the Shibetsu rod (12) is fixed to the rotation angle axis (11) of the people. As shown in Figure 8, each horizontal resistance plate (7) is rotated and housed within the flat surface of the receiving plate (10), and then the auger drilled hole (6) is opened as shown in Figure 5. Then, pass the square pipe through each Shibetsu rod (12), connect it to the earth auger on the ground, and use the powerful torque of the earth auger to The horizontal resistance plate type stay anchor has a horizontal resistance surface area that is much larger than that of the curved resistance plate type. Therefore, the tensile strength of the stay anchor is even stronger, and therefore, the means of obstructing each horizontal resistance plate (7) is to divide it into two Shibetsu rods (12), and on the receiving plate (10). Considerations have been taken, such as arranging channel (9).

Now, the stay anchor that uses the auger drilled hole (6) as explained above has the greatest advantage of eliminating the severe labor costs of driving it to the depth of the drilled hole, Because the anchor in the ground exhibits its tensile strength, Iυ is also important.
6) A resistive plate with a larger area than necessary has to be dug into the soil of the side wall, and a considerable amount of steel is wasted directly or indirectly during manufacturing.

It must be repaired in the same way as the soil, but there is no way that it can be done in the shortest possible time.

For the reasons mentioned above, it is necessary to expand the resistance plate greatly within the large side wall of the excavation, but the curved resistance plate method that supports this inside the excavation hole requires a large amount of curved resistance plate (11
Since this slightly interferes with the thickness of the board (3) on the rib (2), it is necessary to increase the thickness of the board (3) and also to increase the thickness of the curved resistance plate (11) on the flat surface of the rib (2). The horizontal resistance plate (7) must be reinforced in various ways, and the horizontal resistance plate (7) is also required to have various complicated structures in order to strengthen it.

Here, the present invention can be applied to either a curved resistance plate system as shown in FIG. 9 or a horizontal resistance plate system as shown in FIG. After that, without backfilling, when mixed with water, it has sufficient permeability into the soil, but within a few minutes, the entire length of the concrete begins to set, and becomes equivalent to ordinary concrete 1. A treatment solution formulated to harden to hardness is injected into the drilled hole (6), and the bottom J of the drilled hole (6) is heated to 1/1/2 of the total depth of the drilled hole (6).
Fill it up to about 3 or more, and then dig a part of it into the hole (01
It penetrates into the side wall and solidifies and hardens the entire amount to form the concrete I cylinder (13).

As a result, the stay anchor supports the expansion resistance plate (13)
It does not require a particularly strong support structure because it is surrounded by water, but a structure long enough to allow expansion at the bottom of the excavation hole (6) is sufficient, which drastically reduces the amount of steel used. The concrete cylindrical body (13) not only serves as a substitute for backfilling the excavated hole (6), but also penetrates into the side wall and hardens, causing a phenomenon of digging into the ground. The concrete cylindrical body (13) alone exhibits a considerable tensile strength, which naturally reduces the area of the resistance plate of the stay anchor, which in turn reduces the amount of steel used and reduces the product price of the stay anchor. It can be made considerably cheaper, and the tensile strength can be made even stronger and more stable. ! It was decided to carry out the 11th major reform.

Thus, several minutes after the injection, when the cement solution begins to solidify, the excavated hole (6) is backfilled, resulting in the present invention.

[Brief explanation of the drawing]

Fig. 1 shows the curved resistance plate type stay anchor in the injection and expanding state, and Fig. 2 similarly shows the curved single bar resistance plate force type stay anchor in the closed state. FIG. 3 is also a side view showing the expanded state of the curved resistance plate type stay anchor, and FIG. 4 is a plan view of FIG. 3. Fig. 5 shows the horizontal resistance plate type stay anchor in the injection and expanding state, Fig. 6 is a plan view showing the horizontal resistance plate type stay anchor in the expanded state, and Fig. 7 shows the horizontal resistance plate type stay anchor in the expanded state.
This figure is a side view of FIG. 6, and FIG. 8 is a side view showing the horizontal resistance plate type stay anchor in a closed state. FIG. 9 is a side view of a curved resistance plate system, and FIG. 10 is a side view of a horizontal resistance plate system according to the present invention. Note +11 Curved resistance plate (8) Reinforcement plate (2) Rib (9) Channel tunnel (3) Board (10) Receiving plate (4) Bottom plate (11) Rotation angle shaft (5) Upper pull plate (12) Shibetsu Rod (6) Excavation hole (13) Concrete cylindrical body (7) Horizontal resistance plate procedural amendment (voluntary) 1982 Patent Application No. 168458 Name of Z Invention Method for Strengthening and Installing Stay Anchors 3, Person Making Amendment Case Relationship (patent applicant) Tsuguhiko Watanabe (2 others) 1-5-13 Ebaramachi, Nakano-ku, Tokyo 4. Agent I-B6SO1, 6-25-15 Nishiikebukuro, Toshima-ku, Tokyo
Telephone number: (03) 985-7151 (6526) Patent attorney Taniyama 5, "Title of the invention" in the specification to be amended, "Claims" column Amended specification 1, Strengthening of the name of the invention stay anchor Installation Method 2 Claims After a stay anchor consisting of a curved resistance plate or a horizontal resistance plate is placed on the bottom surface of an excavated hole to be excavated with an earth auger, the curved resistance plate or horizontal resistance plate of the stay anchor is installed in the excavated hole. It burrows into the undamaged soil on the peripheral side wall of the hole and expands.
Next, a cement solution is injected into the excavated hole to a predetermined depth that maintains the required strength of the stay anchor, and is allowed to solidify, and a portion of this cement solution is allowed to penetrate into the peripheral side wall of the excavated hole to form the stay anchor structure. Containing cock I
6 methods for strengthening and installing a stay anchor, characterized by forming a cylindrical body and finally backfilling the excavated hole. 6. Detailed Description of the Invention The present invention mainly relates to a method for reinforcing a stay anchor to prevent a utility pole from falling down. Most of the current utility poles used for facilities such as electric power and communication are driven-in stay anchors, which are installed in the ground about 2 meters underground from the ground surface. However, due to the rationalization of maintenance of power distribution lines, stay anchors are required to further increase their tensile strength, and on the other hand, due to the recent deterioration of the economic environment, This led to a new situation that called for further reductions in product prices and the simplification and rationalization of construction labor costs. Currently, most of the methods of setting stay anchors are done manually by two workers, which requires considerable labor, and with the trend of labor saving, it is becoming easier to do so. Although mechanization is being considered, due to the work environment where the work is carried out while moving vigorously following a forest of utility poles, the target driving machine will be used on the day! In addition to being used for construction work on the outside line of Building R, the absolute requirements were to make it small and lightweight so that it could be loaded onto a small work vehicle +1111i, and because it required sufficient attack pressure input, development did not progress well until today. However, on the other hand, pole construction work has evolved into concrete poles, which are several times heavier than traditional wooden poles due to the depletion of resources for utility poles themselves. Therefore, a special pole erecting vehicle that was also equipped with Earth Okara became necessary and quickly became popular, and today 9 years ago, a pole erecting vehicle has become an essential maintenance vehicle. In order to cope with this situation, two types of stay anchors, which will be detailed below, were developed as a result of studies on labor-saving methods that utilize pole-erecting vehicles as a measure to utilize the pole-erecting vehicles over a wide area. The first thing that was developed was the curved resistance plate system shown in Figures 1 to 4 of the accompanying drawings. The structure of the curved resistance plate 1 is such that the entire length of the elongated center line of a predetermined elongated steel plate is extruded as a rib 2, and the upper pull plate 5 can pass through the elongated center point. The leaves are bent into two leaves through the opening as shown in Fig. 2, and each leaf is curved from its vertical center to the tip, and furthermore, the lower end surface The resistor plate 1 is placed on both sides of the upper part of the substrate 6 to which the disk-shaped bottom plate 4 is fixed.
.
is fixed by cutting into the center upper side of the board B. As shown in FIG. 2, the curved resistance plate type stay anchor constructed in this manner is constructed by passing the curved resistance plate 1 into the closed state, passing through the upper drawer plate 5 through the opening, and attaching the rib 2 of the curved surface at the tip to the base plate 3. After being fixed and engaged on the sloped surfaces on both sides of the hole, and in this locked state, as shown in FIG. The upper part of the curved resistance plate 1 is struck with a long-handled hammer above the ground surface to inject and expand the curved part of the curved resistance plate 1 into the side wall around the 60th circumference of the excavation hole,
Furthermore, the excavated hole is backfilled to prepare for upper loading. Next, to explain the horizontal resistance type stay anchor shown in Figs. 5 to 8, firstly, as shown in Fig. 61 and Fig. Although the open state is shown, the structure is such that a channel 9 of sufficient strength is fixed and integrated over the entire plane center line of the disc-shaped receiving plate 10 corresponding to the diameter of the earth auger excavation hole, and the channel 9 is fixed and integrated at both ends. The horizontal resistance plate 7, which is a circular plate having the same diameter as the receiving plate 10, is connected to the rotation angle shaft 11, which is located at the lower part and is formed from a square bar cut into a round steel shape with the required length. The horizontal resistance plates 7, which are pivoted in a common manner to the channel 9 and the receiving plate 10 so that they can face each other and rotate freely, and which simultaneously rotate in opposing positions, are designed to prevent the outer periphery that would otherwise be a hindrance. A necessary official notch is made in the surface, and the reinforcing plate 8, which is a truncated cone, is cut off at the portion protruding from the circumferential surface of the horizontal resistance plate 7, for the purpose of reinforcing the strength of the flat plate surface on each flat plate opposing surface. At the same time, each rotation angle 1111111 has 1
2 was made into a fixed structure. With the stay anchor constructed in this manner as shown in FIG. 8, each horizontal resistance plate 7 is rotated and housed within the flat plate surface of the receiver &10, and the stay anchor is inserted into the auger excavated hole 6 as shown in FIG. Constant f on the bottom! (L) Next, pass the square pipes through the respective Shibetsu rods 12, connect them to the earth auger on the ground, and use the strong torque of the earth auger to connect the square pipes to the respective 18
The horizontal resistance root type stay anchor has a horizontal resistance root type stay anchor whose 1m area of horizontal resistance surface is much heavier than the curved resistance plate type. Therefore, the tensile strength of the stay anchor is even stronger, and therefore, the means of obstructing each horizontal resistance plate 7 is to divide it into two into two shibetsu rods 12, and also have a channel 9 on the receiving plate 10.
Consideration has been taken, such as arranging As mentioned above, the stay anchor that uses the auger drilled hole 6 has been praised for its greatest advantage in that it eliminates the heavy driving labor costs that would otherwise be required to drive to the depth of the hole. ,
Because the anchor in the ground generates tensile strength, the most important soil pressure becomes the excavation hole 6, which weakens the excavation.For this reason, the side wall of the excavation hole B is Second, it is necessary to inject and expand a large 1rll-sized resistance force, and therefore, in production, the direct and indirect losses are a waste of money. Ideally, therefore, the excavated hole should be restored to the same condition as the undamaged surrounding soil, but this cannot be accomplished with extremely difficult labor. For the above reasons, the resistance plate has to be expanded greatly within the large side wall of the excavation, but in the curved resistance plate method that supports this inside the excavation hole, the curved resistance plate 1 has a considerably large width.
Since this slightly interferes with the thickness of the board 2 above the rib 2, it is necessary to increase the board thickness of the board 1 and at the same time provide various reinforcements on the flat surface of the curved resistance board 1 itself. Moreover, the horizontal resistance plate 7 is also required to have various complicated structures for reinforcement. From this point of view, the present invention is applicable to both the curved resistance plate system shown in FIG. 9 and the horizontal resistance plate system shown in FIG. Before backfilling, it is necessary to use a material that, when mixed with water, has sufficient permeability into the soil, but within a few minutes the entire length of the material begins to set and hardens to the same hardness as regular concrete. The blended cement solution is injected into the field excavation hole 6 to fill it with light from the bottom of the excavation hole 6 to a predetermined depth that can maintain the required strength of the stay annoker, and a part of it is poured into the excavation hole 6.
The concrete cylinder 1 is formed by infiltrating the peripheral side wall and setting and hardening all the iTi. In this way, the excavated hole 6 is backfilled when the cement solution starts solidifying several minutes after the cement solution is injected. As a result, the structure of the stay anchor inside the fence drilled hole 6 that supports the expansion resistance plate is completely made of concrete circular I'tii body 16.
becomes surrounded by. Therefore, it is possible to drastically reduce the amount of steel used because it is sufficient to have a structure with a length that can be expanded at the bottom of the 6-drilled hole in the Lrt, rather than requiring a particularly strong bearing (1"4 structure). Therefore, the cock IJ-to cylindrical body 16 (not only acts as a mere backfilling substitute for the Japanese hole 6, but also penetrates into the side wall and hardens, causing a coughing phenomenon in the ground). However, a considerable amount of copper tension can be exerted even if only by the Q, and this naturally reduces the area of the resistor plate of the stay anchor, which reduces the amount of steel used and significantly reduces the product price of the stay anchor. Furthermore, the advantages of this are that the tensile strength can be further strengthened and stabilized, etc. 4. Brief explanation of the drawings Figure 1 shows the excavation of the curved resistance plate type stay anchor. FIG. 2 is a side view showing the closed state of the curved resistance plate type stay anchor; FIG.
The figure is an enlarged side view showing the expanded state of the curved resistance plate type stay anchor, Figure 4 is the plan view of Figure 3, and Figure 5 shows the state of the horizontal resistance plate type stay anchor being bitten and expanded in the excavated hole. Fig. 6 is a plan view showing the expanded state of the horizontal resistance plate type stay anchor;
The figure is a side view of Figure 6, Figure g8 is a side view showing the horizontal resistance plate type stay anchor in the closed state, Figures 9 and 10 are the curved resistance plate type stay anchor and the horizontal resistance plate type stay anchor inside the excavation hole. It is an explanatory view of a state in which the cough is expanded and then backfilled. 1 - Curved resistance plate 8 - Reinforcement plate 2 - Reply 9 - Channel/Flannel 6 - Substrate 10 - Receiving plate 4 - Bottom plate 11 - Rotation angle shaft 5 - Top drawing plate 12 - Top drawing board 6 - Drilling hole 13 - Concrete Itto cylindrical body 7 - horizontal resistance plate February 1980 L1 amendment patent applicant Tsuguhiko Watanabe and 2 others

Claims (1)

[Claims] The earth curved resistance plate (118< means the horizontal resistance plate (7)) passed through the excavation hole (6) excavated with an earth auger (
6) Excavation hole after injection into the undamaged soil of the side wall (
6) For stay anchors that are to be backfilled to exhibit tensile strength, cement solution is injected into the excavated hole (6) before backfilling, and the hole is approximately 1/3 of the total length of the excavated hole from the bottom of the excavated hole (6). All the structures that support the resistance plate IllT71 that fills and condenses in the excavated hole (6) up to the above and expands are built in, and as a result of its outer periphery penetrating into the side wall of the excavated hole (6), the outer periphery is inside the side wall. A reinforced installation method for a stay anchor characterized by further increasing the tensile strength as a concrete cylindrical body (13) in a state of being bitten into the core, and reducing the manufacturing cost.