JPH0512446Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial field of application> This invention relates to a support structure for safety fences installed on coastal breakwaters and embankments of rivers, ponds, etc. Especially during strong winds, waves and driftwood etc. This invention relates to a support structure for a safety fence suitable for installation in a place where there is a possibility of receiving impact due to a collision.

<Prior art> In particular, the support structure of a safety fence installed on a breakwater on the coast needs to be strong enough to withstand the pressure of waves that rush in during strong winds.
It must be able to withstand impact from collisions with driftwood, pebbles, etc. carried by waves. Furthermore, most breakwaters are generally gravity-type structures using caissons, which vibrate considerably when subjected to wave force, so the safety fence is also required to have a structure that can withstand the vibrations.

A typical example of a conventional safety fence support structure is shown in FIG. 6, for example. 1 in the same figure
1 is a column whose lower part is inserted into a metal cylindrical part 13 having an inner diameter larger than its outer diameter, and a rubber material 9 for shock absorption is filled between the column 1 and the cylindrical part 13. A mounting flange 14 is attached to the lower end of the cylindrical portion 13 by welding or the like.

For example, this support structure has a hole 1 in concrete 2.
1 is opened and an anchor bolt 8 is fixed, and the anchor bolt 8 and nut 4 are fixed at the flange 14. Reference numerals 10, 10, . . . denote handrail materials such as wire ropes and chains, which are provided on the column 1 and connected to the column 1 via mounting fittings 7. A gap 12 is provided between the bottom of the support 1 and the surface of the concrete 2 so that the support 1 can easily tilt. The entire surface of the metal cylinder is covered with a rubber material to prevent corrosion.

<Problems to be solved by the invention> Conventional strut structures have a structure in which a rubber material is glued to the lower end of the strut. The problem is that it requires a support device for the strut that is considerably larger than the timber and rubber material, that is, a large mold that normally surrounds the rubber part while the strut is in an upright position.
There is a problem in that even if only one of the columns of the column structure or the part consisting of the rubber material and the outer cup at the lower end of the column is damaged and becomes unusable, the entire column structure needs to be replaced.

<Means for solving the problem> The present invention has a cylindrical body with a closed upper end, a small diameter part with an outer diameter slightly smaller than the cylindrical body at the lower end, and a female thread provided on the lower surface of this small diameter part. with a pillar,
A fixing part that is a short cylindrical body with an outer diameter approximately equal to that of the above-mentioned support, and has a partition plate in the middle of the hollow part in the longitudinal direction, and a hole is provided in the partition plate at a position corresponding to the above-mentioned female thread, and the upper side of this fixation part. a male screw that is screwed into the female thread through the hole with the small diameter part of the support post inserted through the opening to releasably connect the support support and the fixed part; and an internal diameter larger than the outer diameter of the fixed part. It consists of an outer cup having means for removably attaching it to concrete on the ground, and a rubber-like elastic body provided between the fixing part and the outer cup so as to connect them both.

<Function> With the fixing part and the support post separated, the rubber, which is an elastic body provided between the fixing part and the outer cup and bonded to both, is vulcanized. Thereafter, with the small diameter portion of the support post inserted through the upper opening of the fixing part, the male thread is screwed into the female thread through the hole, thereby releasably joining the support post and the fixation part. The outer cup is then fixed to the concrete on the ground. At this time, by tightening the male screw, the lower edge of the column and the upper edge of the fixing part can be brought into strong contact, so seawater and rainwater can be prevented from entering the inside of the fixing part from this joint. can. Furthermore, since the outer circumferential surface of the fixed part is tightly surrounded by the rubber-like elastic body, seawater or the like does not accumulate between the outer circumferential surface of the fixed part and the rubber-like elastic body.

Furthermore, since the male thread, female thread, and partition plate are provided inside the fixing part in a substantially sealed state, these can be prevented from being exposed to seawater or the like.

<Example> An example of the present invention will be described with reference to FIGS. 1 to 5. 21 is a column, 24 is a fixing part, 27 is an outer cup, and 30 is rubber.

Fig. 3 shows a structure mainly used as a support structure for a safety fence installed on an existing quay wall. 1st
The figure is an enlarged view showing the main parts of the column structure shown in FIG. 3. The support column 21 is made of, for example, a stainless steel or steel pipe whose surface is coated with anti-corrosion coating. The upper end of the column 21 is closed, and the opening at the lower end has a short cylindrical column 23 having an outer diameter corresponding to the inner diameter of the column 21.
are inserted and joined by a welded portion 22 to form a small diameter portion. Four screw holes 38 are provided in the lower surface of the short cylinder 23.

The fixed part 24 is a short cylindrical body whose outer diameter and inner diameter are approximately equal to those of the support column 21, and a partition plate 25 is provided in the hollow part to divide the hollow part into an upper opening and a lower opening. Four holes 26 are bored in this partition plate 25 at positions corresponding to screw holes 38 provided on the lower surface of the short cylinder 23. The lower end surface of the support column 21 and the upper end surface of the fixed part 24 are brought into a butt state by inserting the short cylinder 23 joined to the lower end of the support column 21 into the upper opening of the fixed part 24. The support column 21 and the fixing part 24 are secured by passing bolts 33 through the lower side of the four holes 26 of the partition plate 25 and screwing them into the four screw holes 38 provided on the lower surface of the short column 23. Joined.

The outer cup 27 is made of stainless steel or a metal whose surface is coated with anti-corrosion coating, and has a tapered shape that expands downward, and the inner diameter of the upper end is larger than the outer diameter of the support column 21. A mounting flange 28 is attached to the lower end by, for example, welding. The flange 28 is provided with a hole 29 into which an anchor bolt 36 is inserted.

The elastic body is made of rubber 30, and the rubber 30 is filled between the fixing portion 24 and the outer cup 27 in a bonded state. In this example, rubber 3
0 extends to the lower surface of the flange 28, and a slight gap 35 is formed between the lower end of the fixed part 24 joined to the support column 21 and the upper surface of the concrete 34 where the lower surface of the rubber 30 contacts. . Note that the flange 28 may be brought into direct contact with the surface of the concrete 34 without intervening the rubber 30.

This support structure is constructed by drilling holes in concrete 34 and burying anchor bolts 36 therein, and then attaching the anchor bolts 36 and nuts 37 to the flange 2.
8 is fixed and installed. This support structure has a
As shown in the figure, a handrail chain 39 is attached with a mounting bracket 40. Mounting bracket 40
is constructed so that seawater etc. will not enter into the support column 21 from this part. As shown in the figure, a through hole is bored at the location where the mounting bracket 40 is installed on the support column 21, and a metal pipe 42 is inserted into this through hole and its end is welded to the support column 21.
A rubber pipe 43 is arranged inside the pipe 42. A threaded rod 44 is inserted inside the rubber pipe 43, and a chain 39 is attached to both ends of the screw rod 44.
The connecting ring 45 is tightly screwed.

Since the rubber 30 used for the elastic body of the strut structure is adhered to the fixed part 24, the rubber 30 is vulcanized with the strut 21 separated from the fixed part 24. The pillar 21 side and the fixing part 24 side are assembled from a separated state to form a pillar structure and concrete 3 on the ground.
4, insert the four bolts 33 into the four holes 26 of the partition plate 25 from the bottom side while inserting the short cylinder 23 connected to the lower end of the column 21 into the upper opening of the fixing part 24. Then, they are screwed into the respective screw holes 38 on the lower surface of the short cylinder 23 and tightened. As a result, the support column 21 side and the fixed part 24 side are joined without creating a gap on the outer surface. By tightening the bolts 33, the lower edge (lower end surface) of the support column 21 and the upper edge (upper end surface) of the fixed part 24 can be brought into strong contact with each other. can be prevented from entering inside. Furthermore, since the outer circumferential surface of the fixing part 24 is surrounded by the rubber 30 in close contact, seawater or the like does not accumulate between the outer circumferential surface of the fixing part 24 and the rubber 30. The column structure is then fixed by passing an anchor bolt 36 driven into the ground through the hole 29 in the flange of the outer cup 27 and tightening it with a nut 37 from above. Note that, as shown in FIG. 1, when this support structure is installed on concrete 34 on the ground, bolts 33, screw holes 38, and partition plate 2
5 are substantially hermetically sealed inside the fixing portion 24, and are not exposed to seawater or the like.

When either the column 21 side or the fixed part 24 of the column structure is damaged and the damaged part is replaced with a corresponding part, remove the outer cup 27 of the column structure from the anchor bolt 36. The bolts 33 that connect the support column 21 and the fixed part 24 are loosened, and the support column 21 side and the fixed part 24 side are separated. This separated state is shown in FIG. Then, another undamaged component on the support column 21 or fixed portion 24 side is replaced with the damaged component. This allows the column structure to be fixed to the concrete 34 without damage.

In this embodiment, the shape of the outer cup of the column structure was a lattice shape that expanded downward, but the present invention can also be applied to column structures with outer cups of other shapes. I can do it. for example,
FIG. 4 shows an embodiment of a support structure mainly suitable for installation on a newly constructed quay.
An elastic rubber 48 is filled between the two. A mounting flange 49 is provided at the upper end of the outer cup 47, and the rubber 48 also covers the upper surface of this flange 49. A gap 53 is formed below the lower end of the fixed part 24 joined to the support column 21. This support structure has the outer cup 47 buried in the concrete 34 and
The mounting flange 49 is fixed using an anchor bolt embedded in the mounting flange 49.

FIG. 5 shows yet another embodiment of a support structure suitable for installation on an existing quay wall, in which instead of providing a mounting flange, three to four points around the lower end of the outer cup 50 are provided.
Attachment recesses 51 are provided at these locations, and anchor bolts are used for fixation at these locations.

<Effects of the invention> According to this invention, the fixed part to which the rubber is glued can be separated from the support, so when vulcanizing the rubber, a relatively small holding device that only holds the fixed part and the rubber can be used. It has the advantage that it does not require a holding device to hold the column like in the past, and if either the column side or the fixed part side of the column structure is damaged, the damaged part can be replaced. Therefore, it is not necessary to replace the entire support structure as in the conventional case, so it has the effect of being economical.

Furthermore, since the male screw, female screw, and partition plate are provided inside the fixing part in a substantially sealed state, there is an effect that it is possible to prevent these from being corroded by being exposed to seawater or the like.

By tightening the male screw, the lower edge of the support and the upper edge of the fixing part can be brought into strong contact with each other, thereby preventing seawater etc. from entering the inside of the fixing part from this contact part. and, by the structure in which the rubber-like elastic body tightly surrounds the outer circumferential surface of the fixing part, it is possible to prevent seawater etc. from accumulating between the fixing part and the rubber-like elastic body, This has the effect of preventing the fixing part and the lower end of the support from being corroded by seawater or the like.

[Brief explanation of the drawing]

Figure 1 shows one of the safety fence support structures according to this invention.
2 is an enlarged sectional front view of the main part of the embodiment, and FIG. 2 is an enlarged sectional front view of the main part showing the column side and fixed part side of the support structure separated, and FIG. 3 is an enlarged front view of the main part of the support structure shown in FIG. FIG. 4 is a sectional view of a column structure having an outer cup according to another embodiment, FIG. 5 is a sectional view of a column structure having an outer cup according to another embodiment, and FIG. 6 is a front view showing the installed state. FIG. 2 is a partially sectional front view of a conventional support structure. 21... Support column, 23... Short cylinder, 24... Fixed part, 25... Partition plate, 27... Outer cup, 2
8...Flange, 30...Rubber, 34...Concrete, 35...Void.

Claims (1)

[Scope of utility model registration request] A column that is a cylindrical body with a closed upper end and has a small diameter portion at the lower end with an outer diameter slightly smaller than that of the cylindrical body, and a female thread provided on the lower surface of this small diameter portion, and a short cylinder whose outer diameter is approximately equal to that of the column. A fixing part having a partition plate in the middle of the longitudinal direction of the hollow part and a hole provided in the partition plate at a position corresponding to the female thread, and inserting the small diameter part of the support column through the upper opening of the fixing part. a male screw that is screwed into the female screw through the hole in the above-mentioned state to releasably connect the support column and the fixed part; and a means for removably attaching it to the concrete on the ground, the inner diameter of which is larger than the outer diameter of the fixed part. and a rubber-like elastic body provided between the fixing part and the outer cup so as to couple them together.