JPH07305315A - Temporarily installed device such as guard rail - Google Patents

Abstract

PURPOSE:To previously prevent any accident, involving both a human life, and a vehicle, of a runway vehicle due to block angle part from spreading, by the reason of placing, directly on a roadway, a group of blocks for supporting the base parts of posts to which guard rails, etc., are fitted. CONSTITUTION:At least the lower position on the roadway side of concrete blocks 3 arranged at desired intervals is protected by a guard rail 2A as a belt-like protection wall, and the block 3 group are connected to the wall. In addition, another guard rail 4 is similarly fitted on the upper position of the block 3 on the roadway side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a temporary device such as a guardrail, and more particularly to a temporary device such as a guardrail or a fence which is temporarily installed on a road for a predetermined period.

[0002]

2. Description of the Related Art There are many cases where it is necessary to temporarily install a guard rail or a fence on a road. For example, when a new road is installed, when a general vehicle is blocked from entering an undeveloped new road at the boundary between the existing road and this new road, or one lane is closed during a three-lane roadway. If it is necessary to do so, according to the guard fence installation guideline, the foundation part of the guardrail has a depth of 1.1.
Approximately m underground soil rooting is required. However, if the rules of the guidelines are strictly adopted, it will take a great deal of time to install the temporary installation, and when removing the installation, large-scale repair work will be required on the road, and the overall temporary installation cost will be enormous. It will be

However, in reality, with the intention of reducing the temporary cost, as shown in an example thereof in FIG. 20, substantially no central portion of each square block 51 made of concrete is adopted without using any rooting means. Vertical insertion hole 5 drilled in
The posts 53 are erected in the respective 2 and the posts 53, 5
A guard rail 54 or a fence is fixed in a span shape between the three.

Alternatively, as shown in FIG. 21, vertical notch grooves 55, 55 are provided on both side wall surfaces of each concrete block 51, and a pair of adjacent blocks 51, 51 are provided.
In between, the ends of the bridge plate 56 made of concrete or wood are locked in the notched grooves 52, respectively, to reinforce and strengthen the entire guard rail 54.

[0005]

In a conventional temporary device such as a guardrail using a block as a mounting base member, since the block itself is directly installed on the road surface, a runaway vehicle comes into contact with this device, Or at the time of a collision, the vehicle crashes into the corners of the guardrail and the block, the vehicle is damaged, and the guardrail supporting post and the block have an insertion structure, so the block part rotates around the post, The vehicle is spun in an unexpected direction, and deviates significantly from the regular vehicle running path, causing a major accident.

In the case of adopting the structure in which the bridge plate is arranged between the adjacent blocks shown in FIG. 21, the device itself is certainly reinforced and the stability is improved, but the blocks are still installed on the roadway. , When a runaway vehicle comes into contact or collides, this bridge plate is substantially parallel to the guardrail, so the vehicle advances along the bridge plate, and the guardrail bends and collisions on the corners of the block of the vehicle block the bridge plate. The further separation and further rotation around the post of the block results in a spin on the vehicle that contributes to the accident of the runaway vehicle.

Originally, a temporary device such as a guardrail should guide a vehicle by temporarily attaching a roadway made in accordance with the road structure ordinance to a vehicle in a form contrary to the road structure ordinance, such as a sharp curve or an irregular temporary device. Therefore, the risk of accident occurrence increases accordingly. Therefore, the temporary device such as the guardrail is required to have a structure with higher safety for preventing the vehicle from departing from the road.

In the present invention, even when a runaway vehicle comes into contact with or collides with the present apparatus, the runaway vehicle is guided to the original vehicle running path to prevent the runaway vehicle from entering the construction site. The purpose is to eliminate the cause of a major accident at an early stage, and to provide a temporary device such as a guardrail that can prevent the occurrence of an extended accident in a preventive manner while the installation structure of the temporary device is relatively simple. And

[0009]

In order to achieve the above object, a temporary device such as a guardrail according to the present invention has the following structure. That is, in this temporary device, a guard rail or the like is attached, and at least a lower position on the roadway side of concrete blocks arranged at desired intervals is protected by a belt-shaped protective wall, and the block groups are connected by this protective wall. It is characterized by

The strip-shaped protective wall is constructed by a guard rail or a concrete strip plate. And more specifically, when a guard rail is used as the belt-shaped protective wall, a guard rail as a belt-shaped protective wall is provided at a lower position on the roadway side of the block group arranged with a desired interval, and a block of the block on the same surface side is further provided. It is characterized in that a separate guardrail is attached to the upper position. Further, it is characterized in that a guard rail as a belt-shaped protection wall is attached to the road surface side of the block group arranged at desired intervals, and the guard rail is attached to a post standing upright on the block.

When a concrete strip plate is used as the strip-shaped protective wall, the concrete strip-shaped protective wall and a post on which a guard rail or a fence is attached are erected on the rear portion of the protective wall opposite to the roadway. It is characterized in that base pieces made of a structure in which blocks made of steel are fixed to each other are connected in a strip shape.

The connecting portion of the base piece is such that a block integrally formed with the protective wall is formed on the back surface of the concrete band-shaped protective wall, and a pair of block pieces are divided in the direction orthogonal to the protective wall. It is characterized by being connected with a connecting fitting.

Further, the connecting portion of the base piece is divided by a protective wall portion of a shape in which a block group formed integrally with the protective wall is connected to the back surface portion of the concrete band-shaped protective wall, and the protective wall is divided. It is characterized in that the bent portions extending from the back side of the protective wall provided at the end are brought into contact with each other, and the contacted bent portions are connected by a connecting fitting.

Further, this concrete band-shaped protective wall is
A frame wall that extends from the back side of the protective wall is provided near the ends of the pair of divided protective walls that are divided by the block placement equivalent portion. It is characterized in that a block is fitted into a channel portion formed by a wall and a protective wall, and a pair of frame walls and the block are connected by a connecting fitting.

Further, this concrete band-shaped protective wall is
Blocks corresponding to the block arrangement are divided, and nesting portions located above and below are formed at the ends where the pair of divided protection walls abut, respectively, and the tips of the nesting portions are engaged with the blocks. L-shaped hugging arms in plan view having locking pieces provided at the ends are integrally formed, and in the assembled pair of hugging arms, the locking pieces are engaged with the blocks to hold the blocks, The block itself is used as a connecting material.

Further, this concrete band-shaped protective wall is
It is divided by the part corresponding to the block arrangement, and a receiving plate is embedded near the abutting ends of the pair of divided protective walls, and the blocks arranged over this abutting part and the receiving plate are connected by connecting metal fittings. It is characterized by having done.

On the side of the road surface of the concrete band-shaped protective wall, an upward sloped sloped wall is provided at a lower position thereof.
Alternatively, on the side of the roadway, an upward sloping wall is continuously formed at a lower position, and a downward sloping wall whose inclination is completely opposite is continuously formed at an upper position, and the entire wall surface is formed in a "V" shape, or It is characterized in that an overhanging portion provided with a large arc surface is formed at the upper edge of the road surface side toward the road side.

An elastic cushioning material is interposed at each connecting portion of the block pieces constituting the base portion or the divided protective walls, and the cushioning material is plate-shaped or trapezoidal in plan view. It is characterized by

Further, in the case of a guard rail belt-shaped protective wall that connects each block, a belt-shaped gap is formed between the lower edge of the block and the road surface, while in the case of a concrete belt-shaped protective wall, it is below it. A band-shaped notch is formed in the edge portion, and thus a band-shaped gap is formed between the road surface and the protection wall.

When the temporary device is installed at a curved portion, each block is fixed between a pair of angle members fixed on a base plate fixed via a non-slip plate having flexibility on the road surface. On the other hand, when the temporary device is fixed and installed on a straight line, each block with an uneven surface is placed on a flexible antiskid plate laid on the road surface. The entire temporary installation is characterized by its stability in combination with its own weight.

[0021]

[Function] The block group having sharp corners with the guardrails and the like standing upright is completely hidden behind the band-shaped protective wall, so that a runaway vehicle can avoid directly colliding with the block group, and The foundation of guardrails can be solidified with concrete protection walls and blocks that are heavy and do not rotate.

When the protective wall is composed of a concrete strip-shaped protective wall, the runaway vehicle, especially the tire portion, first has an upward sloped wall, a downward sloped wall formed on the road surface of the protective wall.
Further, the presence of the projecting portion provided at the upper edge portion largely dissipates the collision energy, and the runaway direction is forcibly guided to the regular vehicle traveling path. Also, when the temporary installation device is installed at a curved portion, the installation work can be facilitated by using a relatively short base piece.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A concrete embodiment of a temporary device such as a guardrail according to the present invention will be described with reference to the drawings. The following Examples 1 and 2 are both characterized by using a guard rail as a band-shaped protective wall. (Example 1) FIG. 1 is a front view of a part of a temporary device such as a guardrail embodying the present invention, and FIG. 2 is an enlarged sectional view taken along line AA of FIG. A reinforced concrete block 3 is arranged at a desired interval in a base part 1 which constitutes a base part of a temporary device such as a guardrail, and the block 3 group uses a lower position on the roadway side of the block as a belt-shaped protection wall. They are connected by a guardrail 2A.

That is, the block 3 and the guard rail 2A are attached to each other with a shock absorbing material 10, for example, an easily deformable metal as shown in FIG. A plate penetrating material 10A or a synthetic resin foam material 10B as shown in FIG. 3 is interposed, and a bolt penetrating the block 3 and a nut screwed with the bolt (see FIG. 2) or an embedded nut in the block 3 It is fixed by using a fitting 5 such as a bolt (see FIG. 3) to be screwed.

Further, a guardrail 4 which is located above the guardrail 2A used as a band-shaped protective wall and is on the road surface side of the block has a fitting 5 with a shock-absorbing material 10A or 10B interposed therebetween. Block 3,
It is placed between 3 and fixed. The guard rail 2A as the belt-shaped protective wall and the original guard rail 4 located above the guard rail 2A are overlapped at their end portions at the middle portion of each block, and the raised portion on the roadway side of the guard rail having a corrugated cross section. Instead, they are connected in a strip shape by a connecting fitting 11 typified by bolts and nuts, thereby intentionally avoiding the direct contact of the collision vehicle with the head of the connecting fitting 11.

(Example 2) FIG. 4 is a view corresponding to FIG. 2 showing another embodiment, in which a guard rail 2A as a belt-shaped protection wall is installed on the road surface side of the block 3 via a shock absorbing material 10B. The base portion 1 which is attached by the above and has the block 3 group connected by the guard rail 2A as the belt-like protection wall has the same structure as the above, but the block 3 uses the vertical hole 7 provided in the ceiling portion of the block. Post 6
Are provided upright, and the original guardrails 4 are fixed to each other between the posts of the adjacent blocks by the mounting fittings 5 via the shock absorbing material 10A.

The following Examples 3 to 7 are characterized in that a concrete strip plate is used as the strip-shaped protective wall. (Example 3) FIG. 5 is a plan view of a base portion forming the basis of a temporary device such as a guardrail embodying the present invention.
Is a front view thereof. A base portion 1 which constitutes a base portion of a temporary device such as a guardrail is formed by a reinforced concrete strip-shaped protective wall 2B and a rear portion of the protective wall 2B on the side opposite to the roadway integrally with the strip-shaped protective wall at a desired interval. It is composed of three groups of blocks made of reinforced concrete. Each block 3 is provided with a vertical hole 7 for erecting a post 6 to which a guard rail 4 or fence is fixed with a mounting member 5.

The base portion 1 connected in a strip shape is a block 3
The base portion 1 is divided into a plurality of portions, and the base portion 1 is configured by connecting a plurality of divided base pieces 1A. That is, a plate-shaped cushioning material 8A having elasticity such as a rubber material or a resin foam material is interposed between the joining end surfaces of the divided portions of each block 3, and the divided blocks are connection fittings represented by bolts and nuts. 9 are connected in a band shape (see FIG. 5).

As shown in FIGS. 5 to 7, each block 3
The division part is divided into a small block piece 3A on the left side of the block 3 and a wide area block piece 3B including the vertical hole 7 on the right side, avoiding the vertical hole 7 portion. FIG. 8 shows another embodiment in which the block 3 is divided into three parts. In the central part of the vertical hole 7,
The division point is obtained, and a plate-shaped cushioning material 8A is interposed between the joint end faces of the division point, and the block piece 3 is divided into equal parts.
Similarly, C and 3C are connected to each other in a band shape with a connection fitting 9.

When the divided base pieces 1A constituting the base portion 1 are installed linearly, this plate-shaped cushioning material 8A is used.
Can be omitted. Further, when the base portion 1 is installed at a curved portion, the plate-shaped cushioning material is used, and the cushioning material 8B having a trapezoidal shape in plan view is intentionally used to achieve the curved configuration of the base portion 1. (See FIG. 12). Further, by changing the angle of the cushioning material 8B having a trapezoidal shape in plan view, it is possible to cope with a change in the curve configuration.

When the base portion 1 having the above-mentioned structure is installed at a curved portion on the road surface, as shown in a concrete example in FIGS. 7 and 9, each block 3 is placed on the road surface. A non-slip plate 12 having flexibility such as a rubber plate and a resin foam plate is laid, and an iron base plate 13 is provided on the upper surface thereof.
And the base plate 13 and the non-slip plate 12 are fixed to the road surface with anchor bolts 14.

Further, when the base portion 1 is installed in a straight line portion on the road surface, as shown in a concrete example in FIGS. 2 to 4, a rubber plate is provided on the road surface for every three blocks. A block 3 in which a flexible non-slip plate 12 made of a resin foam plate or the like is laid, and an uneven surface 19 is formed on the upper surface thereof.
To place. As a result, the unevenness of the road surface is absorbed by the non-slip plate 12 having flexibility and the uneven surface 19 of the block 3 to stabilize the block and thus the base portion 1.

A pair of angle members 16 and 16 for supporting the block 3 are fixed on the base plate 13 by fixing bolts 17 on the horizontal portion thereof on the base plate 13 with bolts 17. The block 3 arranged on the base plate 13 is required to have stability on the base plate 13, and a plate-shaped cushioning material 8A is interposed between the block pieces 3A and 3B to provide a bolt and a nut between the pair of angle materials 16 and 16 and the block 3. The base portion 1 is firmly fixed to the road surface by the fastening metal fittings 20 represented by.

In this way, on the road surface side of the belt-shaped protective wall which constitutes the base portion 1 of the temporary device such as the guard rail fixed on the road surface, in other words, the concrete belt-shaped protective wall 2B arranged so as to connect the blocks 3 to each other. A strip-shaped notch 21 is formed at the lower edge portion located, and after installation of a temporary device such as a guardrail, a strip-shaped gap is formed between the roadway surface and the concrete strip-shaped protective wall 2B, and through the gap portion, the roadway surface is formed. It is possible to remove accumulated dirt and dust from the road surface by using the wind pressure of the traveling vehicle (see FIG. 6). When the guardrail 2A as shown in FIGS. 1 to 4 is used as the band-shaped protective wall, the guardrail 2A is also used for the same purpose.
A belt-shaped gap is formed between the car and the road surface (see FIGS. 1 and 2).

The road surface side of the concrete strip-shaped protective wall 2B constituting the base portion 1 is inclined upward from the lower position as shown in FIG. The tire portion of the runaway vehicle, which forms the vehicle sliding contact surface and collides with the belt-shaped protective wall 2B in a slidable contact from an oblique direction, rides on the upward sloped wall 23 of the belt-shaped protective wall 2B while slidably contacting it. The runaway vehicle is configured so that the erroneous traveling direction is forcibly returned to the regular traveling path while being guided by the upward inclined wall 23 while absorbing the collision energy by half.

As shown in a modified example of FIG. 10, the concrete belt-shaped protective wall 2B of the base portion 1 has a belt-shaped recess 22 in the central portion on the roadway side of the belt-shaped protective wall 2B.
At the lower position thereof, the upward slanted wall 23 serving as a vehicle sliding contact surface
On the one hand, the upward sloped wall portion 23 for more surely returning the traveling direction of the runaway vehicle to the regular traveling road side and the downward sloped wall portion 24 whose inclination direction is completely opposite are continuously formed at the upper position, and The side wall of the roadway has a generally V shape.

The runaway vehicle first rides on the upward sloped wall portion 23 and is in sliding contact therewith, and further, a part of the tire is in sliding contact with the overhanging upper edge portion of the downward sloped wall portion 24, and the body portion of the vehicle is of the guardrail 4. Upper and lower two-stage strip-shaped convex portions 4A, 4A
The vehicle collides with the temporary device of the guard rail and is forcibly returned to the normal road side in a rebounded manner (see FIG. 10).

Further, as shown in a further modified example in FIG. 11, the concrete strip-shaped protective wall 2B of the base portion 1 is large toward the road side over the entire length of the upper edge portion of the strip-shaped protective wall 2B on the road surface side. The protruding portion 25 having an arc surface is formed. By adopting this structure, in a runaway vehicle that collides with this temporary device from a shallow diagonal direction, the tire portion first comes into contact with this protruding portion 25, and an unexpected riding situation is suppressed, and the vehicle is repelled normally. Returned to the road.

(Example 4) FIG. 13 is a plan view showing a connecting portion of base pieces connected in a strip shape showing another embodiment. The basic structure in which the block 3 in which the vertical holes 7 for standing uprights are formed is integrally formed at a predetermined pitch on the rear portion of the concrete strip-shaped protective wall 2B on the side opposite to the roadway is the same as that of the above-mentioned Example 3.

The divided portion of the base piece 1A which is continuous in a strip shape is formed in the central portion of the strip-shaped protective wall 2B between the blocks 3 and 3, and the abutting end portion of the divided protective wall 2B is formed. , A pair of bent portions 26, which are formed integrally with the protective wall 2 and are in contact with each other, are formed in parallel with the block 3.
6 and 26 are connection fittings 9 represented by bolts and nuts.
It is connected with. If necessary, the plate-shaped cushioning material 8A shown in FIG.
A trapezoidal cushioning material 8B shown in plan view 2 may be interposed.

(Example 5) FIG. 14 is a plan view showing a connecting portion of a base piece showing another embodiment. A concrete strip-shaped protective wall 2B forming a part of the base portion 1 is divided at a block-corresponding portion, and the divided protective wall 2 extends toward the rear side of the protective wall at positions near the ends thereof. And a block 3 between the frame walls 29 and the plate-shaped cushioning material 8A in the channel portion formed by the pair of protection walls 2B whose ends are abutted and the pair of frame walls 29, 29. And a connection fitting 9 typified by a bolt and a nut between the pair of frame walls 29 and 29 and the block 3.
It is connected with.

FIG. 15 shows a modified example of the connecting portion disclosed in FIG. 14, in which the frame wall 29 itself is constituted by a completely separate angle member 31 such as a steel plate, one piece of which is the protective wall 2B.
The frame wall piece 33 includes another piece that is embedded at a position closer to the end portion of the embedded piece and stands up from the embedded piece 32. The pair of protective walls 2B and 2B and the pair of steel plate frame wall pieces 33 and 33 whose ends are abutted against each other. The block 3 is fitted in the channel portion formed by the plate wall cushioning material 8A between the frame wall pieces 33, 33, and the pair of frame wall pieces 33, 33 and the block 3 are connected by the connection fitting 9. Has been done.

(Example 6) FIG. 16 is a plan view showing a connecting portion of a base piece showing another embodiment, and FIG. 17 is an exploded perspective view of the connecting portion, and a concrete strip-shaped protective wall constituting the base portion 1. 2B is divided by the block arrangement portion, and nest portions 36, 36 located at the upper and lower sides are formed at the end portions with which the pair of divided protection walls abut, respectively.
An L-shaped hugging arm 38 having a locking piece 37 formed at the end for engaging with the block is continuously provided at the tip end of the hoop 6, and the hugging arm 3 is formed by assembling the nesting parts 36, 36 located above and below.
The block 3 is fitted from above into the tubular portion formed by 8, 38, and at that time, the block 3 is provided in the vertical notch 39 formed on both side surfaces of the block 3 at the tip of the hugging arm 38. The locking pieces 37 are engaged with each other to hold the block 3 in the pair of L-shaped hugging arms 38, 38,
The pair of divided protective walls 2B, 2B are connected via a block 3. The L-shaped hugging arm 38 has a width in the vertical direction that is approximately twice the width of the nesting portion 36, and
The width of the block 3 is approximately the same as that of the block 3 and holds the block 3 over a wide area.

FIG. 18 is a plan view of the connecting portion of the base piece showing a partial modification of the sixth embodiment disclosed in FIGS. 16 and 17, and is an L-shaped embrace that is connected to the tip of the nesting portion 36. The arm 38 has a large overhanging length, and the block 3 is held in the pair of hugging arms 38, 38 combined.
Locking piece 37 provided at the tip of the hugging arm 38 on the back wall of the
The vertical notches 39 provided on both side wall surfaces of the block can be omitted as a matter of course.

(Example 7) FIG. 19 is a plan view of a connecting portion showing another embodiment. The concrete strip-shaped protective wall 2B that constitutes a part of the base portion 1 is divided at a portion corresponding to the block arrangement, and the divided protective wall 2B is located at a position close to the end.
A tough receiving plate 42 made of, for example, a steel plate is embedded. The pair of protective walls 2B and 2B are abutted with each other at their end portions, and the block 3 is provided in a crossover manner on the rear surface portion on the side opposite to the roadway between the joint portions.
To place.

The head of the bolt is positioned in the recess 43 formed at the relative position of the buried receiving plate 42 on the road surface side of the protective wall 2B, and penetrates the receiving plate 42 and the block 3,
A nut is screwed onto a bolt protruding from the back surface of the block, and the protective wall is connected via the block using a plurality of connecting fittings 9.

In each of the above-mentioned examples, each block 3 has a pair of angle members 16 fixed on the base plate 13 fixed on the road surface at the curved position of the road surface as described in the third example. , 16 is fixed, and, as described in Examples 1 and 2, it is mounted on the anti-slip plate 12 at the linear position on the road surface. Further, on the road surface side of the concrete strip-shaped protective wall 2B, an upward inclined wall 23, or upward and downward inclined walls 23, 2 is provided.
4 and / or the projecting portion 25 are similarly formed.

[0048]

In the temporary device such as the guardrail according to the present invention, the block group supporting the guardrail or the fence is completely guarded by the belt-shaped protection wall arranged on the side of the roadway, so that the runaway vehicle is dangerous. You can surely avoid direct contact and collision with the corners of large blocks,
Further, at the time of a vehicle collision, the block can avoid the rotational movement around the post, so that the personal injury and the vehicle accident can be prevented from spreading.

By diverting an existing guardrail as a belt-shaped protection wall for concealing the roadway side of the block, the cost can be reduced, and by utilizing the flexibility and flexibility of the guardrail, sliding contact from an oblique direction is possible. It is possible to suppress the spread of damage of the runaway vehicle that collides with the property. In addition, this performance of the guardrail makes it easy to install the temporary installation device when it is installed on a curved portion.

Further, by using the concrete strip plate as the strip-shaped protective wall, the weight of the temporary device itself increases, and the stability of the temporary device can be secured by that amount. In addition, by adopting a protective wall made of a concrete strip, an upward sloped wall, a combination of an upward sloped wall and a downward sloped wall on the side of the road surface of the protective wall, or a protruding portion at the upper edge of the wall. It can be provided, and the guideline of the runaway vehicle can be executed very smoothly and surely, and expansion of various runaway accidents can be prevented.

Further, in the invention of claim 7, a part of the connecting member of the base piece is brought into contact with the block piece constituting the block, so that the connecting mechanism becomes simple and the connecting portion is also strong. Will be things.

Further, in the invention of claim 8, the structure is simple, but there is a concern that the connecting portion located in the middle portion of the band-shaped protective wall is weakened. However, the existence of the guardrail can sufficiently secure the toughness of the portion.

In each of the ninth to eleventh aspects of the invention, since the band-shaped protective wall and the block are formed separately, the weight of the individual members can be reduced by that amount. It is possible to eliminate the difficulty in terms of weight in the work of installing the temporary device. Further, in the band-shaped connection of the divided protection walls, blocks are arranged in a crossover shape at each connection portion, and the blocks are actively used as one member of the connection member, so that the configuration is simpler. Be converted.

According to the tenth aspect of the invention, the block is used as a locked member of the divided protective wall, so that no connecting fittings such as bolts and nuts are required, and also in terms of appearance. In addition, the connecting work becomes simple.

Further, in each of the inventions, by inserting an elastic cushioning material in each connecting portion of the base piece, it is possible to reduce the impact energy at the time of collision of a runaway vehicle due to the presence of the cushioning material. it can. Further, by adopting a trapezoidal member in plan view as the cushioning material and changing the angle of the trapezoid according to the installation condition, this device can be appropriately adapted to various curved points with different radii of curvature. Can be installed.

Further, a strip-shaped notch is provided at the lower edge portion of the concrete strip-shaped protective wall that connects the blocks, and an appropriate strip-shaped gap is formed between the block and the road surface, so that the gap is formed through the gap. Various dust accumulated on the surface can be removed outside the road by the wind pressure of the traveling vehicle, and the cleanliness of the road can be maintained for a long time, and at the same time, the drainage effect on the road can be expected. In addition, even when the band-shaped protective wall is hit by the guard rail, the same effect can be obtained by forming an appropriate band-shaped gap with the road surface.

Further, in this temporary installation device, at a curved portion, each block is fixed to the road surface by a base plate fixed to the road surface and a pair of angle members fixed to the base plate, whereby the temporary device itself. Combined with the weight of, the temporary equipment with high stability can be set for a long period of time, while the uneven surface formed on the back surface of each block when installed in a straight place is the uneven surface that remains on the road surface. It is possible to absorb the anti-slip plate together with the highly flexible anti-slip plate and stabilize the temporary device.

[Brief description of drawings]

FIG. 1 is a front view of a part of a temporary device such as a guardrail embodying the present invention.

FIG. 2 is an enlarged sectional view taken along line AA of FIG.

FIG. 3 is a diagram corresponding to FIG. 2 showing another embodiment.

FIG. 4 is a view corresponding to FIG. 2 showing still another embodiment.

FIG. 5 is a plan view of a base portion which constitutes a temporary device such as a guardrail according to another embodiment of the present invention.

6 is a front view of a temporary device such as a guardrail using the base portion shown in FIG.

FIG. 7 is a detailed plan view of the block fixing shown in FIGS. 5 and 6 constituting the base portion.

FIG. 8 is a plan view showing another embodiment of the block section.

FIG. 9 is a side view of the block and the band-shaped protective wall portion shown in FIG. 7.

FIG. 10 is a view corresponding to FIG. 9 showing another embodiment.

FIG. 11 is a view corresponding to FIG. 9 showing still another embodiment.

FIG. 12 is a view corresponding to FIG. 5 of folding using a cushioning material having a trapezoidal shape in plan view.

FIG. 13 is a plan view showing a connecting portion of a base piece according to another embodiment.

FIG. 14 is a plan view showing a connecting portion of a base piece according to still another embodiment.

15 is a plan view showing a modified example of the connecting portion of the base piece shown in FIG.

FIG. 16 is a plan view showing a connecting portion of a base piece according to another embodiment.

FIG. 17 is an exploded perspective view of each component shown in FIG.

18 is a plan view showing a modified example of the connecting portion of the base piece shown in FIG.

FIG. 19 is a plan view showing a connecting portion of a base piece according to still another embodiment.

FIG. 20 is a perspective view of a part of a conventional guardrail temporary installation device.

FIG. 21 is a perspective view of a part of a conventional improved guardrail temporary installation device.

[Explanation of symbols]

 1 Base part 1A Base piece 2A, 2B Belt-shaped protective wall 3 Block 4 Guardrail 6 Post 7 Vertical hole 8A, 8B Buffer material 9 Connection metal fitting 13 Base plate 14 Anchor bolt 16 Angle member 21 Belt-shaped notch 23 Upward inclined wall 24 Downward inclined wall 25 Imminent Feeding portion 26 Bending portion 29 Frame wall 31 Angle member 36 Nesting portion 37 Locking piece 38 L-shaped hugging arm 39 Vertical notch 42 Receiving plate

Claims (20)

[Claims] 1. A band-like protective wall protects at least a lower position on a road surface side of concrete blocks arranged with guard rails or the like and arranged at desired intervals, and the block groups are connected by the band-like protective wall. This is a temporary device such as a guardrail. 2. The temporary installation device such as a guardrail according to claim 1, wherein the band-shaped protective wall is a guardrail. 3. A temporary installation device such as a guardrail according to claim 1, wherein the strip-shaped protective wall is a concrete strip plate. 4. A guard rail or the like in which a guard rail as a belt-shaped protective wall is installed at a lower position on the roadway side of a block group arranged at desired intervals, and a guardrail is further installed at an upper position on the same surface side of the block. Temporary device. 5. A temporary installation device such as a guardrail in which a guardrail as a belt-shaped protective wall is attached to the roadway side of a block group arranged at desired intervals, and the guardrail is attached to a post which is erected on the block. 6. A concrete block having a concrete belt-like protective wall and a post on which a guard rail or the like is attached is erected on a rear portion of the protective wall opposite to the roadway, and is fixed to the belt-like protective wall at a desired interval. A temporary installation device such as a guard rail, which is formed by connecting divided base pieces having the above configuration. 7. A back surface of a concrete band-shaped protective wall,
7. A temporary device such as a guardrail according to claim 6, wherein a block integrally formed with the strip-shaped protective wall is formed, and block pieces divided in a direction orthogonal to the strip-shaped protective wall are connected by connecting fittings. 8. A back surface of a concrete band-shaped protective wall,
Of the base portion consisting of a block group formed integrally with the strip-shaped protective wall, the protective wall portion is divided, and the bent portions extending from the rear side of the protective wall, which are provided at the divided end portions of the protective wall, are brought into contact with each other. The temporary installation device such as a guardrail according to claim 6, wherein the abutting bent portions are connected by a connecting fitting. 9. The concrete strip-shaped protective wall is divided at a block corresponding portion, and a frame wall extending from the back side of the protective wall is provided near each end of the divided strip-shaped protective wall. 7. The temporary device such as a guard rail according to claim 6, wherein the block is fitted into the channel portion formed by the pair of frame walls and the protective wall by abutting, and the pair of frame walls and the block are connected by a connecting fitting. 10. A concrete strip-shaped protective wall is divided at a portion corresponding to a block arrangement, and a nesting portion located above and below is formed at an end portion where the pair of divided protective walls come into contact with each other. An L-shaped hugging arm in a plan view is integrally formed at the end of the hanger with a locking piece that engages with the block, and the block is locked in the assembled pair of hugging arms. 7. The temporary installation device for guardrails, etc. according to claim 6, wherein the piece is engaged with and held by the block, and the block is used as a connecting member. 11. A concrete strip-shaped protective wall is divided at a block arrangement corresponding portion, and a receiving plate is embedded near the contacting end portions of a pair of the divided protective walls, and the block is arranged over the corresponding contact portion. The temporary installation device such as a guardrail according to claim 6, wherein the connection plate and the receiving plate are connected by a connecting fitting. 12. The temporary device for guardrails or the like according to claim 3, wherein an upward sloping sloped wall is formed at a lower position on the road surface side of the concrete band-shaped protective wall. 13. A concrete belt-like protective wall having a belt-like concave portion at a central portion on the roadway side, an upward sloped wall at a lower position thereof, and a downward sloped wall having an inclination entirely opposite to the upward sloped wall at an upper position. 7. The method according to claim 3, wherein
11. A temporary device such as a guardrail according to item 1 to 11. 14. The concrete strip-shaped protective wall according to claim 1, wherein an upper edge portion on the roadway surface side is formed with a projecting portion having an arc surface facing the roadway side. Temporary equipment such as guardrails. 15. The guardrail according to claim 7, wherein a cushioning material having elasticity is interposed between each of the divided base pieces constituting the base portion or each of the divided protective wall connecting portions. Temporary equipment such as. 16. The temporary device such as a guardrail according to claim 15, wherein the cushioning material has a trapezoidal shape in a plan view. 17. A belt-shaped gap is formed between the block rail and the road surface at the lower edge of the guardrail protection wall arranged so as to connect the blocks. 1
Temporary device such as guardrails described in paragraph. 18. A temporary installation of a guardrail or the like according to claim 6, wherein a strip-shaped notch is formed in a lower edge portion of the concrete protection wall arranged so as to connect the block groups. apparatus. 19. Each block constituting a base portion installed at a curved portion is fixed between a pair of angle members fixed on a base plate fixed via a non-slip plate having flexibility on a road surface. The temporary installation device such as the guardrail according to claim 1, wherein 20. The blocks, each of which has a concavo-convex surface formed on the back surface of the base portion installed in a straight line portion, are installed on a flexible non-slip plate laid on the road surface. A temporary device such as a guardrail according to item 1 of 18.