JPH0377329B2 - - Google Patents

Description

[Detailed description of the invention] [Technical field of application] The present invention provides a structure in which the lower end of a support rod bent into an inverted U shape is
A driving member is fixed to the upper side of the arrowhead shape with an expansion guide edge on the shoulder, and the upper part of the two dividing plates is fixed,
This invention relates to a method of driving into the soil a resistance plate whose lower part is temporarily connected so that it can be released.

[Prior art]

A branch line anchor consisting of this type of driving member and a resistance plate is disclosed in Japanese Utility Model Publication No. 58-53324. Therefore, the side shape of the support rod of the known branch line anchor is vertical and straight, and when driving the support rod, after driving the support rod first, the support rod is used as a guide to resist resistance. The construction method is to drive the boards into place.
That is, as shown in FIGS. 1 and 2, after driving the support rod 1, the resistance plate 2 is fitted from the upper end of the support rod 1, and the tip end cap 4 of the guide pipe 3 is fitted as shown in FIG. As shown, while engaging one shoulder edge of the resistance plate 2, it is struck through the guide pipe, and then, while engaging and striking the lower end of the guide pipe 3 to the other shoulder edge of the resistance plate 2, The resistor plates are struck alternately so that they are not biased, and when the resistor plate 2 is driven to a predetermined depth, the guide pipe 3 is pulled out once and the guide pipe 3 is attached to the inverted U-shaped support rod 1 as shown in Fig. 2. Drive it in an inclined state between the left and right rod parts of the plate, and engage the tip of the guide pipe with the groove formed in the center of the resistance plate.
Insert the resistor plates one by one.

Then, after opening the resistance plate 2 to the left and right by means of expansion guide edges provided on both shoulders of a base plate (not shown) provided at the lower end of the support rod, the guide pipe is pulled out. end.

In this way, the conventional pouring method requires a two-step pouring process in which the resistive plate is driven along the support rod of the previously cast member. The inverted U-shaped support rod becomes a hindrance until it penetrates into the ground to a certain extent, making it cumbersome to hit the shoulders of the resistance plate alternately. Furthermore, after the resistance plate has penetrated into the soil to a certain extent, when the guide pipe is engaged with the center of the resistance plate and the final installation is carried out, the guide pipe must be tilted in relation to the support rod as shown in Figure 2. Naturally, this results in a large loss of striking power and is extremely unnatural.

In addition, in hard soil or gravel-containing soil, the support rods of the previously driven members may be deformed, which may prevent the installation of the resistance plate later along the support rods. There were problems such as frequent occurrences.

[Purpose of the invention]

The present invention has been made in view of the above circumstances, and it solves the problems of the prior art by simple and rational means, and has a resistance plate inserted into the lower part of the driving member and driven as an integral part. The aim is to provide a construction method that can be expanded without being affected by the deformation of the rods.

[Components for carrying out the invention]

Next, the configuration of each member used in carrying out the pouring method of the present invention will be explained.

FIG. 3 is a front view of the driving member A, and FIG. 4 is a side view. 11 is a long support rod made of a steel rod bent into an inverted U shape, and the lower end of the support rod 11 is in the shape of an arrowhead,
Moreover, it is fixed to the upper side of the base plate 12, which has an arc-shaped expansion guide edge 12a formed on the shoulder portion. The center part of the upper side of this board 12, specifically, the support rod 1
A recess 12b is formed on the upper side of the base plate 12 between the left and right rod portions 11a constituting the support rod 11, and a recess 12b is formed in which a notch at the tip of a guide pipe, which will be described later, engages. A curved portion 11b having a curved curvature is formed in the curved portion 11b, and the amount of curvature is such that the guide pipe is
The amount of offset is perpendicular to the substrate 12, as shown in FIG. The driving member A is constructed as described above.

FIG. 5 shows a front view of the resistance plate B, and FIG. 6 shows a side view. This resistance plate B consists of two divided plates 13
The upper parts of parts a and 13b are fixed, and the lower parts are releasably temporarily connected. And each of the above-mentioned dividing plates 13a,
As shown in FIG. 9, in the central part of 13b, a bent part having a right isosceles triangular planar shape is formed in the vertical direction, and a square passage 14 which joins both bent parts is formed. is provided on the resistance plate B. A dividing plate 13a forming this passage 14,
Grooves 15a and 15b are provided at the center of the upper edge of two opposing sides 13c and 13d of 13b, respectively.

FIG. 7 is a front view of the guide pipe 16. As described above, the lower end of the guide pipe 16 is provided with a cap having a notch 17a that engages with the recess 12b provided on the upper side of the substrate 12. Further, in the middle part of this guide pipe 16, with the notch 17a engaged with the recess 12b of the base plate 12, a side 13c is formed as shown in FIGS. 9 and 10b.
A hammer 18 that fits and locks into the groove 15a provided in the
a, a hammer 18b that is engaged with the upper side near the groove 15b of the other side 13a is connected to the guide pipe 16, respectively.
It is located at a position opposite to the In addition, at the lower part of this guide pipe 16, at opposing positions,
As described in the pouring method described later, the above-mentioned cast metal 1
8b is attached to the support rod 11 by the rotation of the guide pipe 16.
A hammer 18c is provided which is positioned directly above the groove 15b of the resistance plate B when the resistance plate B is struck.

As is clear from FIG. 9, the planar positional relationship of the respective hammers 18a, 18b, and 18c is as follows.
When the hammer 18a is fitted into the groove 15a of the opposing side 13c, the hammer 18b is inserted into the groove 15a of the opposite side 13c.
The hammer 18c is disposed so as to be located on the same plane as the surface of the resistance plate B. At this time, the rod portion 11a of the support rod 11 has both hammers 18c.
On the line perpendicular to the line connecting
It is located close to the corner portions formed at a and 13b.

Also, at the upper end of the guide pipe 16, when the guide pipe 16 is attached to the driving member A,
As shown in FIG. 10a, a hook-shaped support rod presser 19 is provided to clamp the upper end of the support rod 11, and a guide pipe 16 is inserted into the guide pipe 19 by a driving rod, which will be described later.
The ear plate 20 for rotating clockwise in the state shown in FIG.
0a is provided. In addition, the guide pipe 16
At the top of the mark 21, there is a mark 21 indicating the driving limit amount.
Also, in the middle of this guide pipe 16, there is a 10th
As shown in FIG.
The guide pipe 16 is constructed as described above.

FIG. 8 is a perspective view of the driving rod 23. The upper end of this driving rod 23 engages with the lower side of the ear plate 20 provided at the upper end of the guide pipe 16,
A pullout crotch 24 is provided to be used when pulling out the guide pipe 16. The diameter of this driving rod 23 is determined by the diameter of the ear plate 2 of the guide pipe 16.
The diameter of the driving rod 23 is such that it can be inserted into the hole 20a of the hole 20a.
The condition is that the upper part has a length that protrudes from the upper end of the guide pipe 16.

Note that θ ₁ , θ ₂ , and θ ₃ in FIG. 9 are each 45°.

〔Example〕

An embodiment of the pouring method of the present invention will be described with reference to FIGS. 10a to 10e. As shown in a, on the ground, the support rod 11 of the driving member A is inserted into the rectangular passage 14 of the resistance plate B so that the positional relationship as shown in FIG. A and guide the divided plates 13a and 13b to the lower part of the substrate 1.
2, and then insert the guide pipe 16 into the passage 14, engage the notch 17a of the base 17 with the recess 12b of the base plate 12, and connect the upper part of the support rod 11 with the guide pipe 16. It is clamped between the rod holder 19 and ready for pouring.

With the board 12 standing perpendicular to the ground as shown in a, insert the driving rod 23 into the guide pipe 16, pull up the driving rod upward, and while falling, insert the driving rod 23 into the tip cap 17 of the guide pipe 16. Bury it into the soil while giving a blow. Then, as shown in b, the impact is stopped when the mark 21 above the guide pipe 16 coincides with the ground surface, and then, as shown in c, the lower mark is The guide pipe 16 is pulled out until the guide pipe 22 reaches the upper end of the support rod 11.

Next, the driving rod 23 is inserted into the hole 20a provided in the ear plate 20 of the guide pipe 16, the side surface of the driving rod 23 is applied to the side surface of the guide pipe 16, and the guide pipe 16 is moved clockwise by θ ₁ (45 °) When the guide pipe 16 rotates and the hammer 18b provided on the guide pipe 16 hits the support rod 11, the guide pipe 16 stops rotating. In this state, as mentioned above, use the hammer 18c.
is located directly above the groove 15b of the resistance plate B.

Then, the driving rod 23 is pulled out from the ear plate 20, and when the driving rod 23 is inserted into the guide pipe 16 again and struck, the guide pipe 16 enters and its hammer 18c engages with the groove 15b, and the resistance plate B is gradually moved downward, and the divided plates 13a, 1
3b is released, and each of the partial plates 13a, 13
b enters the soil while opening on both sides along the expansion guide edge 12a of the base plate 12, and the guide pipe 16
When the mark 21 matches the upper side of the support rod 11, the resistance plate B is in the state e and the casting is completed. When the driving is completed in this way, remove the driving rod 23 from the guide pipe 16, hook the pull-out crotch 24 provided on the driving rod 23 to the lower side of the ear plate 20 of the guide pipe, and insert the guide pipe 16 into the soil. Pull it out from inside. All the pouring work is now complete.

〔effect〕

In this way, according to the casting method of the present invention, the resistance plate is inserted into the lower part of the driving member and is cast as an integral part, which not only eliminates the trouble of having to cast the plate in two stages as in the conventional method. Even if the support rod is deformed during driving, it has no effect on the driving development of the resistance plate, and has excellent features such as reliable and easy driving of support rod anchors without impact loss. It is something.

[Brief explanation of drawings]

Figures 1 and 2 are explanatory diagrams showing the conventional pouring method, Figure 3 is a front view of the driving member, Figure 4 is a side view of the same as above, Figure 5 is a front view of the resistance plate, and Figure 6. is a side view of the same as above, Figure 7 is a front view of the guide pipe, and Figure 8 is a front view of the guide pipe.
The figure is a perspective view of the driving rod, FIG. 9 is a cross-sectional view of each member assembled, and FIGS. 10 a, b, c, d, and e are flowcharts of the pouring method. A... Drive member, 11... Support rod, 11a...
Rod portion, 11b...Curved portion, 12...Substrate, 12a
... Expansion guide edge, 12b ... Recessed portion, 13a, 1
3b...Separate plate, 13c, 13d...Side, 14...
Passage, 15a, 15b... Groove, 16... Guide pipe, 17... Cap, 17a... Notch, 18
a, 18b, 18c... hammer, 19... rod holder, 20... ear plate, 20a... hole, 21, 22...
...Mark, 23...Driving stick, 24...Drawing crotch.

Claims (1)

[Scope of Claims] 1 (a) The lower end of a support rod having an inverted U-shape and whose upper part is curved at a predetermined curvature R is fixed to the upper side of a substrate with expansion guide edges formed on both shoulders. The upper parts of the two divided plates are fixed to the driving member, and the lower parts are releasably temporarily connected to the driving member, and a resistance plate with a rectangular planar shape formed in the center between the two divided plates is attached to the above board. The guide pipe is inserted into the rectangular passage of the resistance plate so as to be interposed between the left and right rod parts constituting the support rod. The lower end of the pipe is engaged with the upper edge of the substrate, and a hammer 18a provided at a relative position on the outer periphery of the midway portion of the guide pipe is provided on two opposing sides of the dividing plate forming the passage of the resistance plate. In addition, another hammer 18b provided at a relative position of the guide pipe is engaged with the upper edge of the other two sides, and the hammer 18c provided at a lower relative position of the guide pipe is engaged with the upper edge of the other two sides. A pouring preparation step in which the support rod is positioned perpendicular to the line connecting the left and right rod portions, (b) The guide pipe is struck and the resistance is increased until the mark 21 provided at the top of the guide pipe reaches the ground surface. (c) Driving the driving member with the plate into the soil; Step of pulling out the guide pipe until it fits the upper part of the support rod, (d) The hammer 18b fixed to the guide pipe.
rotate the guide pipe until it contacts one of the rod parts of the support rod, and position the hammer 18c directly above the other groove provided on the resistance plate that was not engaged with the hammer 18a. Step (e) Hit the guide pipe again and press the hammer 18.
c is engaged with the groove of the resistance plate, the resistance plate is expanded into the soil along the expansion guide edge of the board, and then the guide pipe is pulled out from the soil. Driving method for branch line anchors.