JP2016176303A - Foundation displacement prevention body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a low-priced foundation displacement prevention body of a simple configuration that offers high strength and stability by being installed in a way that suits a slope surface on a roadside, may be installed readily in a short period of time, and may be installed on an existing storm and snow protection fence also.SOLUTION: A storm and snow protection fence 1 includes a foundation 2 buried on roadside 22, a support post 4 erected on the foundation 2, and a shielding plate spanned between support posts 4, 4 in a row. A foundation displacement prevention body 5 provided on the foundation 2 includes a long arm member 6 having a base edge side 6A supported on the foundation 2, and an engaging member 8 provided on a distal edge side 6B of the arm member 6, to be driven into a slope surface 22A on the roadside 22.SELECTED DRAWING: Figure 1

Description

  TECHNICAL FIELD The present invention relates to a foundation displacement prevention body that supports a windbreak snow fence standing along a windward side of a road in order to ensure traffic safety in an area where strong winds and snow blow from a certain direction in a certain season. .

In areas where wind and snowstorms blow strongly from a certain direction in winter, windbreak snow fences are lined up along the roadside to ensure traffic, especially when driving a car. And since many roads are made of multi-layered embankment sections such as crushed stone, embankment and asphalt pavement to give strength and durability, the road is formed at a higher position than the surroundings, and the roadside outside is a slope In many cases.
And as shown in FIG. 7, in the road side 22 which cannot fully secure the width | variety which installs the wind-proof snow fence 21, all the foundations 21A which comprise the wind-proof snow fence 21 are not embed | buried in the road side 22, A part of the back surface may be exposed from the slope 22A on the road side 22.

  The windbreak snow fence 21 is usually installed corresponding to the strong wind blown from a certain direction indicated by the arrow shown in FIG. 7 or the smooth wind of the snowstorm. In this case, a part of the foundation 21A of the windbreak snow fence 21 is provided. Even if it is in the state exposed from the slope 22A of the roadside 22, no particular problem occurs.

However, strong winds or snowstorms may blow on the windproof snow fence 21 from the opposite direction of the arrow B due to climate change such as abnormal weather (see FIG. 8). In this case, in the windbreak snow fence 21 in which a part of the foundation 21A is exposed from the road side 22, the earth pressure that supports the foundation 21A is insufficient with respect to the wind pressure, and cannot be supported by the frictional force with the soil or the own weight. In addition, there is a situation in which the windbreak snow fence 21 is tilted rearward, that is, outside the road (see FIG. 9), and in the worst case, it falls. Moreover, the road side 22 is softened by heavy rain, and the situation where the foundation 21A slides from an installation place for this has also arisen.

  Then, the fall prevention tool 4 of the snow fence 2 is proposed as a technique which supports a windproof snow fence more strongly. This overturn prevention tool 4 is constructed by standing a pair of right-angled triangular support members 4b on both sides in the width direction on a square bearing plate 4a. By disposing the pressure plate 4a and connecting and integrating the support members 4b and 4b to the opposite road side surface of the basic concrete 3, the bottom area of the basic concrete 3 is increased (Patent Document 1).

Patent No. 4336257

  However, the fall prevention tool 4 of Patent Document 1 aligns the support plate 4a with the foundation 3 on the ground 50, aligns the support member 4b with the anchor 6 driven into the foundation 3, and fastens it with bolts 4d and nuts 4e. A lot of troublesome work, such as doing, is required for each of the many foundations 3. In this way, excavation work and assembly work are necessary and work efficiency is poor, the production cost of the preventer 4 is high, and the installation location is limited because a space for installing the protector 4 is required on the road side. There are a number of drawbacks.

  The present invention has been made in view of the above-mentioned drawbacks of the prior art, and is simple and inexpensive, and can be installed corresponding to roadside slopes, so it has excellent strength and stability. An object of the present invention is to provide a foundation displacement prevention body that is easy to work and can be installed in a short time, and that can also be installed on existing windproof snow fences.

  Means constituting the present invention for solving the above-described problem is that a shielding plate is provided between a block-like foundation embedded on the road side and other support pillars standing on the foundation and arranged at a predetermined interval. A windbreak snow fence composed of supporting struts is provided with an arm material that supports the base side on the foundation and a locking material that locks to the road side by providing the arm material on the tip side. Consists of things.

  And it is good to comprise the said latching material so that a displacement in an up-down direction is possible with respect to the said foundation.

The arm material may be configured to be extendable and contractible.

Further, the locking member may be composed of a substrate provided on the arm member, and a protrusion that protrudes downward from the substrate and is driven into the road-side slope.

  Further, the locking member may be fixed by an anchor pin driven into the road side.

Since the present invention is configured as described above, the following effects are obtained.
(1) Since the foundation displacement prevention body provided with a locking material that locks to the road side at the tip side of the arm material is provided on the foundation, the windbreak snow fence is caused by the headwind even in the installation location where a part of the foundation is exposed from the roadside It is possible to prevent an inclination or a situation of falling.
(2) Since the base displacement prevention body is configured such that the locking member can be displaced in the vertical direction with respect to the base, it can cope with the case where the angle of the road-side slope differs depending on the installation location.
(3) Since the arm material is configured to be extendable and retractable, it can be locked to the slope according to the slope condition on the road side where the windbreak snow fence is installed.
(4) Since the locking member is composed of a substrate provided on the arm member and a protrusion that protrudes downward from the substrate and strikes the slope, the locking member is securely locked to the road side and reliably supports the windproof snow fence against wind pressure. be able to.
(5) Since the locking member is fixed by an anchor pin driven into the road side, the windproof snow fence can be reliably supported even when the road side is soft.

FIG. 1 thru | or FIG. 6 concerns on embodiment of this invention, FIG. 1 is a side view of the foundation displacement prevention body provided in the windbreak snow fence. It is a perspective view of a foundation displacement prevention body. It is a front view of a locking material. It is a side view of a locking material. It is a side view of the foundation displacement prevention body concerning a modification. It is a partial side view of the arm material which concerns on another modification. FIGS. 7 to 9 relate to the prior art, and FIG. 7 is a side view of a windbreak snow fence installed on the roadside receiving smooth wind. It is a side view of the state where a windbreak snow fence receives a reverse wind. It is explanatory drawing of the state in which the windbreak snow fence was inclined by the reverse wind.

  Embodiments of the present invention will be described in detail below with reference to FIGS. In FIG. 1 to FIG. 4, 1 is a windproof snow fence, 2 is a foundation made up of a concrete block that constitutes the windproof snow fence 1 and is embedded in the road side 22, and a post 4 described later is provided on the upper surface 2 </ b> A of the foundation 2. The studs 3, 3,... For supporting are provided. Reference numeral 4 denotes a steel column. The column 4 is erected on the foundation 2 by fastening a plate plate 4A fixed by welding to the stud bolt 3 with a nut. In the same manner, a windproof snow plate (not shown) is installed between the columns 4 which are erected on the foundation 2 and arranged in a row.

  Reference numeral 5 denotes a foundation displacement prevention body for supporting the windproof snow fence 1 provided on the road side 22. Reference numeral 6 denotes an arm material that constitutes the foundation displacement prevention body 5, and the arm material 6 is made of a U-shaped material, and a base end side 6 </ b> A is fastened to a side surface of the foundation 2 with bolts and nuts 7. Note that the arm material 6 is not limited to the U-shaped material, and pipes and steel molds may be used.

Reference numeral 8 denotes a locking member provided on the distal end side 6B of the arm member 6. As shown in FIGS. 2 to 4, the locking member 8 is formed with a rectangular substrate 8A, a front locking piece 8B formed downward from the front edge of the substrate 8A, and downward from the rear edge of the substrate 8A. The rear locking piece 8C is composed of a mounting piece 8D erected at the center in the width direction of the substrate 8A. The front locking piece 8B is formed in a pentagonal shape with the lower end at the center protruding so as to be surely attached to the road side 22. I'm trying to bite into.
The locking member 8 having the above-described configuration is obtained by fastening the mounting piece 8D to the distal end side 6B of the arm member 6 with the bolt and nut 9 with the front and rear locking pieces 8B and 8C facing downward. 6 is provided.

The windbreak snow fence 1 having the above-described configuration is installed by excavating the ground along the road side 22, and the foundation displacement prevention body 5 is attached to the slope 22 </ b> A on the road side 22. That is, the base displacement preventing body 5 is extended in accordance with the inclination of the inclined surface 22A, and the locking member 8 is pressed to drive the front and rear locking pieces 8B and 8C into the inclined surface 22A.
As a result, the foundation displacement prevention body 5 is securely locked to the inclined surface 22A, and the foundation 2 tilts as the foundation displacement prevention body 5 supports even if the windbreak snow fence 1 receives strong backwind in the direction indicated by arrow B. Can be prevented.

  FIG. 5 shows a modification of the present embodiment. The feature is that an anchor pin 9 is inserted into a hole 8E (see FIG. 2) previously drilled in the base plate 8A of the locking body 8, and the anchor pin 9 is driven into the inclined surface 22A. Thus, even when the front and rear locking pieces 8B and 8C are weakly bitten, the locking body 8 can be reliably locked to the road side 22.

  FIG. 6 shows another modification. In the figure, reference numeral 10 denotes a foundation displacement prevention body, 11 denotes an arm material constituting the foundation displacement prevention body 10, and the arm material 11 is fixed to a foundation 2 by bolts and nuts 7, and a fixed arm portion 11 A. The movable arm portion 11B is fastened with bolts and nuts 12 to the distal end side of the portion 11A, and a locking member 8 is provided on the distal end side of the movable arm portion 11B.

As described above, the arm member 11 is configured such that the fixed arm portion 11A and the movable arm portion 11B are pin-coupled so that the movable arm portion 11B can be displaced in the vertical direction. The stop material 8 can be matched with the slope 22A of the road side 22, and the front and rear locking pieces 8B and 8C can be reliably bited into the slope 22A.
If the locking member 8 can be displaced in the vertical direction, the base end side 6 </ b> A of the arm member 6 may be pivotally attached to the base 2.

  Further, although not shown, the arm member 6 may be configured to be extendable. With this configuration, the position of the locking body 8 can be changed in the front-rear direction with respect to the inclined surface 22A, so that the locking body 8 can be locked in accordance with the situation of the inclined surface 22A.

  The foundation displacement prevention body 5 may be retrofitted to the existing windbreak snow fence foundation 2.

DESCRIPTION OF SYMBOLS 1 Windbreak snow fence 2 Foundation 4 Support | pillar 5, 10 Foundation displacement prevention body 6, 11 Arm material 8 Locking material 8A Board | substrate 8B Locking piece 9 Anchor pin 22 Road side 22A Slope

Claims (5)

  A windbreak snow fence comprising a block-shaped foundation buried on the roadside and a pillar that stands upright on the foundation and supports the shielding plate between the pillars arranged at a predetermined interval, the base end side is said A foundation displacement prevention body comprising an arm material supported by a foundation and a locking material that is provided on a distal end side of the arm material to be locked to the road side.   The foundation displacement preventing body according to claim 1, wherein the locking member is configured to be displaceable in a vertical direction with respect to the foundation.   The foundation displacement prevention body according to claim 1, wherein the arm material is configured to be extendable and contractible.   2. The foundation displacement prevention body according to claim 1, wherein the locking member comprises a substrate provided on the arm member and a protrusion that projects downward from the substrate to be driven into the road-side slope.   The foundation displacement prevention body according to claim 1, wherein the locking member is fixed by an anchor pin driven into the road side.

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