JPH0461922B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a road partitioning structure using block members in a roadway median strip or a partition between a roadway and a sidewalk.

"Prior Art" and "Problems to be Solved by the Invention" In general, median strips provided in the center of a roadway and road sections that partition the roadway and sidewalk are constructed using a raised rigid structure with block members fixed to the road. Built in structure.

Therefore, conventional road sections made of block members lack the ability to absorb shock when a vehicle collides with them, as well as lack the ability to elastically displace due to impact force. The vehicle may be significantly damaged or overturned, and the vehicle may be driven over the other road section and into oncoming lanes or sidewalks, exacerbating the accident and causing serious damage to people and vehicles. There are problems such as damage to parts.

The present invention aims to solve the above-mentioned problems of the prior art.

``Means for Solving the Problems'' The road partition structure of the present invention that achieves the above objectives is based on a flexible structure, and its gist is ``a base block that is buried and fixed in the road; The bottom of the partition block has an inverted mountain shape in cross section, and the apex is placed on the base block, and there is a gap between the slope of the inverted mountain shape and the top surface of the base block. A flexible structure with a space for rotation of the division block.
The partition block itself is constructed so that when a wheel contacts or collides with the partition block, the partition block itself rotates and displaces.

``Function'' The road partition structure of the present invention, which is characterized by the flexible structure described above, absorbs and alleviates the impact force of a vehicle collision through the rotational displacement of the partition block, and prevents the colliding vehicle from climbing over the partition block. Furthermore, when the external force is removed, the rotational displacement of the division block is restored.

"Example" Hereinafter, a detailed explanation will be given based on an example. First, referring to FIG. 1 showing a first embodiment of the present invention applied to a road median strip, the road partition structure of the present invention consists of a base block buried and fixed on the partition of the opposite lane of the road. 2 and a partition block 1 placed on the base block 2, the base block 2 is buried and fixed in the road with its upper surface exposed, and the front and back of each other are in contact (or brought close to each other).
and arranged in a row. On the upper surface of the base block 2, partition blocks 1 are arranged in a chain and arranged in a row, and are raised higher than the road surface 3 to form a median strip.

Specifically, as shown in FIG. 1, the partition block 1 is a long and narrow box made of concrete, which has a U-shaped cross section, is surrounded by a front wall 5A and a rear wall 5B, and has an upward opening. The outer side of the bottom connecting the side walls 4A, 4B is formed into an inverted mountain shape consisting of an arcuate apex 5 extending in the longitudinal direction and a slope 6 smoothly connected to the apex 5.

On the other hand, the upper surface 2' of the base block 2 has a shallow concave portion 7 with an arcuate surface continuously formed in the central portion thereof in the longitudinal direction to receive the apex of the partition block 1, and the upper surface 2' other than the concave portion 7 is A space 8 for rotation of the partition block 1 is provided between the slope 6 of the partition block 1 and the slope 6 of the partition block 1 on which the apex portion 5 is received and placed in the recess 7.

The first group of partition blocks placed on the base block 2 and arranged in a row are connected to adjacent mutual front walls 5A.
An elastic spacer material 9 is interposed between the rear wall 5B, and a pair of connecting bolts 11, which are individually protruded from the elastic spacer material 9, are inserted at the center positions of the front wall 5A and the rear wall 5B. Adjacent compartment blocks 1 are connected to each other in a chain via elastic blanks 9.

The first group of partition blocks placed and arranged on the base block 2 and elastically interconnected via the elastic spacer material 9 have side walls 4A4B and 4A4B.
When it receives an external force that tries to topple it, a moment is generated around the apex part 5 as the center of rotation, and it rotates as shown by the dotted line in the figure.When the external force is removed, the elasticity due to its own weight and the elastic connection mentioned above is generated. It has a flexible structure that returns to its original position by reaction force.

In addition, in the partition block 1 of this embodiment, plants are planted in the recessed parts to enable greening of the central separator, and the base block 2 has a hollow drainage channel 12 provided below the upper surface 2'. A side structural function is provided to receive and drain rainwater from the water collection hole 13 on the upper surface 2'.

The road partition structure of the present invention having the above configuration is characterized by a flexible structure in which the group of partition blocks 1 is rotated and displaced by external force, so that the connection strength due to the own weight of the partition blocks 1 and the elastic spacer material 9, and If the moment radius R connecting the vertex 5 and the vehicle collision prediction point 14 is selected appropriately, the vehicle will collide with the side wall 4A4B.
When there is a strong contact or collision with the block, a moment shown in the figure M is generated due to the component force of the contact force or the collision force, and the first group of partition blocks rotates in conjunction with each other while remaining elastically interconnected. It has the effect of mitigating and absorbing the impact force and preventing the vehicle from running over the partition block 1. Then, when the external force due to the collision is removed, the first group of partition blocks at the rotating position automatically restores to the original position due to the restoring force due to its own weight and interconnection, or it is easy to assist by adding external force. It has the effect of restoring the road to its original state, and does not damage the sections of the road concerned. In the event of an emergency such as a disaster, the group of partition blocks can be removed to secure the effective area of the road.

Next, other embodiments of the present invention will be described with reference to FIGS. 2 to 4. First, the second illustrated embodiment has the same road section structure as the first illustrated embodiment, consisting of the section block 1 and the base block 2.
Slope 6 at the bottom of partition block 1 and base block 2
The upper surfaces 2' are elastically connected to each other through an elastic spacing material 9, and the partition block 1 is used, for example, as a median strip on a highway, so that even if it is subjected to a strong collision force, the partition block 1 will not shift laterally. It has a unique effect of rotating without twisting and increasing restoring force.

Further, the embodiment shown in FIG. 3 is applied to partition a roadway and a sidewalk, and the upper surface 2' of the base block 2 is formed into a concave arc surface to be continuous in the longitudinal direction, and the bottom of the partition block 1 is an inverted mountain. The partition block 1 placed on the base block 2 forms an arcuate surface of the shape and is placed on the concave arcuate surface of the base block 2. , and a rotation space 8 is secured on both sides of the apex portion 5 . The embodiment shown in the fourth figure can also have the same effect as the first embodiment.

Further, the embodiment shown in FIG. 4 is an embodiment in which a guardrail 10 is erected on the division block 1 of the embodiment shown in FIG. 8, and the guardrail 10 is applied as a road division with a card rail.
In the above structure of the present invention, the elastic spacers 9 interconnecting the adjacent partition blocks 1 shown in the first illustrated embodiment may be omitted.

"Effects of the Invention" As explained above, the road partitioning structure using block members of the present invention is characterized by a flexible structure in which a group of partitioning blocks is rotatably placed on the upper surface of the base block 2. It has shock absorption performance and elastic displacement performance when vehicles contact or collide, and prevents injuries and vehicle accidents from increasing, prevents unnecessary damage to road sections, and furthermore, in the event of an emergency. This has many effects, such as making it possible to easily remove a group of partition blocks and secure an effective road surface.

[Brief explanation of the drawing]

Figure 1: Shows a road division structure according to one embodiment of the present invention, A is a front view thereof, B is a central sectional view thereof, Figures 2, 3, and 4: Road division structure according to another embodiment of the present invention. Main symbols: 1: Partition block, 2: Base block, 2': Top surface of base block, 3: Road surface, 4A
4B: side wall, 5: vertex, 6: slope, 7: recess,
8: Rotation space, 9: Elastic interlayer, 10: Guardrail, 12: Drainage channel, 13: Water collection hole.

Claims (1)

[Scope of Claims] 1. Consisting of a combination of a base block buried and fixed in the road, and a division block mounted on the base block, the bottom part of the division block has an inverted mountain shape in cross section and has an apex part. A road partition structure using a block member, characterized in that the block member has a flexible structure in which a block member is placed on the base block, and a space for rotation of the partition block is provided between the slope of the inverted mountain shape and the upper surface of the base block. 2. A road partition structure using a block member according to claim 1, wherein the partition block and the base block are elastically connected via an elastic spacer. 3. A road partition structure using block members according to claim 1, wherein a group of partition blocks are placed in a row on a base block, and adjacent partition blocks are chain-connected via an elastic spacer.