JPH0533545Y2 - - Google Patents

Description

[Detailed explanation of the invention] <Industrial application field> This invention relates to the support structure of safety fences installed on coastal breakwaters and embankments of rivers, ponds, etc. Especially during strong winds, waves, 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> Conventional general safety fences have a structure in which the pillars are buried when concrete is poured. With such a rigid structure, there is almost no displacement when subjected to impact, and the amount of impact energy absorbed is extremely small, so when waves or driftwood or gravel carried by waves collide with it during strong winds, it The pillars are easily bent and the concrete in which they are buried is easily damaged.

For this reason, the devices shown in FIGS. 6 and 7 have been considered. In Figure 6,
1 is a support, 2 is a metal cylinder, and 3 is rubber, and these three are joined together. Attach the flange 4 at the lower end of the metal cylinder 2 to the anchor bolt 5 and nut 6.
It is fixed to the concrete 7 of the breakwater.
In the figure, 8 is a handrail member such as a wire rope or chain. When a safety fence is formed using the pillars 1 supported in this way, the rubber 3 deforms elastically when an impact force is applied, as shown in FIG. 6b, compared to a general rigid structure. It absorbs much more impact energy and has better impact resistance.

In the one shown in Fig. 7, the diameter of the metal cylinder 2a becomes smaller as it goes upward, and the upper end of the rubber 3a stands up diagonally upwards toward the support 1 side than the upper end of the metal cylinder 2a. Although it is different from the one shown in FIG. 6 in that it has a three-part structure, it is also the same as the one shown in FIG.

<Problem to be solved by the invention> The above-mentioned conventional safety fence support strut structure using a rubber-like elastic body has a buffering function and has excellent durability against impact, but it is expensive and expensive to manufacture. There is a problem. That is, pillar 1,
Since the metal cylinder 2 or 2a and the rubber 3 or 3a are joined together, it takes time and effort to bond the rubber and metal in the rubber vulcanization process, and the vulcanization mold is not suitable for the support. Because of the presence of the support, it is quite large, complicated, and expensive, and the workability is also poor because the support 1 becomes clumsy during vulcanization, which increases manufacturing costs.

The object of this invention is to provide a support structure for a safety fence that has a buffering function and has a structure in which rubber is not bonded to other metal parts.

<Means for Solving the Problem> The means of this invention includes a column having a protrusion projecting outward from the peripheral surface at its lower end, and a column that surrounds the lower end of the column including the protrusion. On the other hand, there is a rubber-like elastic body that can be attached and detached, and the elastic body is surrounded by an anchor bolt that is fixed to the ground side to support the column in a tiltable manner through the elastic body, and it can be attached and detached from the elastic body. It consists of a fixed member.

In the above means, it is preferable that the elastic body has an inner hole into which the support column is inserted, and a lower end of the inner hole is formed as an enlarged inner hole into which the protrusion fits.

Further, in the above means, it is preferable that the elastic body is formed in sections on both sides so as to sandwich the support column.

Further, in the above means, it is preferable that the fixing member has a regulating edge extending in a tangential direction of the column along the upper end surface of the elastic body and on both sides of the column and regulating the direction of the tilting movement.

<Function> According to the above means, the rubber-like elastic body, the column, and the fixing member are formed separately, but the column is provided with a protrusion, and together with the protrusion, the rubber-like elastic body covers the lower end of the column. Since the structure is such that the fixing member surrounds the outer side of the supporting column, by fixing the fixing member to the ground side, the column is supported so as not to come off from the rubber-like elastic body. The pillars supported in this way temporarily absorb impact forces caused by waves, driftwood, etc. due to the elasticity of the rubber-like elastic body and undergo elastic deformation, so they are less susceptible to damage than conventional rigid safety fence support pillar structures. It's hard to accept.

In manufacturing, the rubber-like elastic body, the strut, and the fixing member are each formed separately, so there is no need to join the rubber-like elastic body and other parts. Related processing is much simpler than before. When installing it on an embankment, etc., it is easy to assemble on the spot and fix the fixing members with anchor bolts, so there are no problems in construction. This kind of assembly type means that
Partial replacement is possible in case of partial damage.

In the configuration in which the elastic body has an inner hole into which the column is inserted and an enlarged inner hole at its lower end, the column is inserted from the lower end of the elastic body, the lower end engages with the elastic body, and the elastic body is fixed with a fixing member. This prevents the support column from coming off the elastic body upward.

The configuration in which the elastic body is formed separately on both sides allows replacement when the elastic body or the fixing member becomes aged or damaged, without removing the handrail member provided at the top of the column from the column. It is also convenient for giving directionality to the tilting direction of the support in this type of support structure. In other words, if the support is designed to be easily tilted toward the land side and difficult to tilt toward the sea side, one elastic body may be made hard and the other elastic body may be made soft. When the elastic body is made soft, the material itself may be made soft, but it is also possible to have a configuration in which a chamber is provided.

The fixing member having the regulating edge guides the column so that it tilts along the regulating edge when the column is tilted. This allows the prop to be tilted in the direction of the force exerted by waves or driftwood, that is, toward the land side, thereby restricting tilting in other directions.

<Example> A first example is shown in FIGS. 1a and 1b. In the figure, 11 is a column, 12 is a rubber-like elastic body, and 13 is a fixing member.

The support column 11 is formed of a steel pipe and has its upper end closed with a spherical surface.
A flange 20 is provided at the lower end, and a handrail member coupling portion 21 is provided in the middle.

The rubber-like elastic body 12 is made of rubber, has a substantially truncated conical shape, and has an inner hole 22 in the center into which the support column 11 is fitted, and the lower end of the inner hole 22 is formed so that the flange 20 is just fitted therein. Expanded hole 24 enlarged to
is formed. The outer shape has a horizontal upper end, a flange portion 25 at the lower end, and an anchor bolt insertion hole in the flange portion.

The fixing member 13 is made of a pressed steel plate, and has a shape that has an inner surface and a lower surface that come into contact with the outer surface of the tapered portion on the outer periphery of the rubber-like elastic body 12 and the upper surface of the flange portion 25, and has a shape that contacts the cylindrical portion 26 and the flange portion. The flange portion 27 has an anchor bolt insertion hole that matches that of the flange portion 25.

Each member formed in this way is fixed by fitting the inner hole 22 of the rubber-like elastic body 12 from the upper end of the support column 11 and lowering it to the lower end, thereby fitting the enlarged hole 24 to the outer periphery of the flange 20. Member 13
The rubber-like elastic body 1 is inserted into the support 11 from above.
2, and the respective anchor bolt insertion holes are fitted into anchor bolts 28 previously provided in the concrete part 7, and fixed with nuts 29.

A second embodiment is shown in FIG. This example is the first
This is similar to the embodiment, and as shown in the figure, the axial dimension of the enlarged hole 24a of the rubber-like elastic body 12a is formed larger than the thickness dimension of the flange 20, and a space is formed below the flange 20. rubber seat 30
The difference is that the upper surface of the flange 20 is brought into close contact with the elastic body 12a by interposing the elastic body 12a. The rest is substantially the same as the first embodiment, so the same parts are designated by the same reference numerals and the explanation will be omitted.

A third embodiment is shown in FIGS. 3a and 3b. This embodiment is different from the first embodiment in that the rubber-like elastic body 12b is not in the shape of a truncated cone but in the shape of a cylinder, and correspondingly, the fixing member 13b is approximately cylindrical and has a ridge 31 at the upper end facing inward.
It differs in that it has Parts equivalent to those in the first embodiment are designated by the same drawing symbols.

A fourth embodiment is shown in FIG. This example is the third
This is similar to the embodiment, and the projecting edge 31 of the fixing member 13c
The only difference is that c is located close to and parallel to both sides of the column 11 as shown. Parts equivalent to those in the third embodiment are indicated by the same drawing symbols.

A fifth embodiment is shown in FIG. In this embodiment, the support column 11d has a flange 20d slightly above the lower end, and the rubber-like elastic body 12a is divided into two on both sides along a vertical plane passing through the central axis, forming a part A and a part B. The flange portion is omitted, and the fixing member 13d is substantially the same as that in the first embodiment, or its height is slightly larger than that of the rubber-like elastic body 12d. Portion A of the rubber-like elastic body 12d is made of softer rubber than portion B.
In this embodiment, the flange portion 27 is also fixed with anchor bolts and nuts, but illustration thereof is omitted.

In each of the first, second, and third embodiments described above, no matter which direction the force acting to topple the support columns 11, 11a, and 11b is applied, which one is applied depending on the magnitude of the horizontal component force? It also tilts to the side as well. Assuming that the rubber material is the same, the bottom surface of the flange 20a of the second embodiment is also supported by rubber, while the bottom surfaces of the flanges 20, 20b of the other first and third embodiments are in contact with the concrete. It is easier to tilt than the one that is.

In the fourth embodiment, the support 11c has a projecting edge 31c.
It is easy to tilt in a direction along the direction of , but it is difficult to tilt in other directions.

In the fifth embodiment, since the portion A of the elastic body is soft, the same horizontal force will cause the column 11a to fall toward the portion A side and to the portion B side. It is more difficult to knock it down to the part B side. This is because soft rubber is easily compressed and deformed.

From the above, in the first, second, and third embodiments, the mounting direction of the lower part of the support with respect to the handrail direction of the safety fence may be arbitrary, but in the fourth embodiment, The ridge 31 is designed to make it easier to tilt from the sea side to the land side, which is the main direction of the acting force.
It is necessary to make it perpendicular to the direction of the handrail member 8 in the direction b, and in the fifth embodiment, it is necessary to provide the soft part A so that it is located on the sea side. In any of the embodiments, it is necessary to design each part so that when a person leans against the safety fence, the safety fence does not tilt significantly toward the sea. By doing this, the enormous energy that acts on the safety fence, such as waves, is absorbed by the tilting of the pillars, and as a result of the tilting, the acting force is parried and released, causing damage to the safety fence. Prevent this from happening. Furthermore, even if a person leans on the safety fence during normal times, safety can be ensured by preventing the person from leaning too far toward the sea.

<Effects of the invention> According to this invention, since the support is fixed to the ground side with a fixing member via a rubber-like elastic body,
Compared to conventional rigid safety fence support strut structures, it is less likely to be damaged by collisions with waves, driftwood, gravel, etc., and the support struts, rubber-like elastic bodies, and fixing members are each formed separately. Its manufacture is easy to vulcanize, especially when the rubber-like elastic body is rubber, and it can be provided at a significantly lower cost than the one-piece structure using conventional rubber-like elastic bodies, and it is also resistant to local damage. The effect of easy repair can be obtained through partial replacement.

[Brief explanation of drawings]

Fig. 1 shows the first embodiment of this invention, a is a partially broken front view, b is a plan view, Fig. 2 is a partially sectional front view of the main part of the second embodiment, and Fig. 3 is a third embodiment. , a is a partially sectional front view of the main part, b is a plan view,
Fig. 4 is a plan view of the fourth embodiment, Fig. 5 is a partially sectional front view of main parts of the fifth embodiment, Fig. 6 shows a conventional safety fence support structure, a is a partially sectional front view, and b 7 is a partial sectional front view of the main part of the pillar in a tilted state, and FIG. 7 is a longitudinal sectional front view of the main part of another conventional safety fence support structure. 11, 11d... Support, 12, 12a, 12b
...Rubber-like elastic body, 13, 13b, 13c, 13
d...Fixing member, 20, 20d...Flange, 2
2...Inner hole, 24, 24a...Enlarged hole, 25...
Flange part, 26... Cylindrical part, 27... Flange part, 28... Anchor bolt, 29... Nut.

Claims (1)

[Claims for Utility Model Registration] (1) A column that has a protrusion projecting outward from its circumference at its lower end, and a column that surrounds the lower end of the column, including the protrusion, and is removable from the column. A rubber-like elastic body, which is surrounded by a rubber-like elastic body, and a fixing member that surrounds the elastic body and is fixed to the ground side with an anchor bolt to support the column in a tiltable manner through the elastic body, and that is removable from the elastic body. A support structure for a safety fence. (2) In the safety fence post structure according to claim (1), the elastic body has an inner hole into which the post is inserted, and the lower end of the inner hole is in the enlarged hole into which the protrusion is inserted. A support structure for a safety fence, characterized in that: (3) A support structure for a safety fence according to claim (1) or (2), wherein the elastic body is formed to be divided on both sides so as to sandwich the support. . (4) In the safety fence post structure according to one of claims (1), (2), and (3), the fixing member is arranged along the upper end surface of the elastic body and on both sides of the support post tangent to the post. A support structure for a safety fence, characterized in that it has a regulating edge extending in the direction and regulating the direction of the tilting.