JP4714282B2 - End concrete block for branching - Google Patents

Description

  The present invention relates to a branching end concrete block that is installed at the end of two connected boundary blocks that form a section or boundary by connecting in the longitudinal direction to form a branch point.

  The inventor has both ends formed in an arc shape in the longitudinal direction of the block main body, and an upper projecting portion formed by projecting an upper side to one end of the both ends and an opposite side. A lower projecting portion formed by projecting the lower side to the side at the other end, and when fitted to an adjacent concrete block, the fitting portion can be turned as a fulcrum. Proposing a precast concrete block for foundation construction comprising a fitting convex portion formed in a circular convex shape on the upper surface of the lower protruding portion and a fitting concave portion formed in a circular concave shape on the lower surface of the upper protruding portion (Patent Document 1).

  Such a precast concrete block for foundation construction is useful in that it can be installed regardless of the curvature of the road regardless of the straight section or the curved section and can form a section or a boundary.

  When installing precast concrete blocks for building foundations that form sections or boundaries on the highway or on a branch of a road, as shown in FIG. 14, continuous blocks 6 that form two rows of sections or boundaries are provided. Simply along the branches, the ends of the plurality of foundation-cast precast concrete blocks are formed separately from each other. Therefore, for example, when a car or the like collides with the front or side of a precast concrete block for foundation construction, the blocks in each row break apart and the terminal block jumps to the road side and erodes the road. I had to do it. In such a case, there is a problem that the road is blocked, causing traffic congestion.

  Therefore, the present invention has been made in view of the above problems, and connects end portions of foundation-cast precast concrete blocks (hereinafter referred to as “connected boundary blocks”) that form two rows of partitions or boundaries. It is to provide an end concrete block for branching that can be bundled together.

  In order to solve the problems as described above, the measures taken by the present invention are as follows.

  The end concrete block for branching according to the present invention is arranged side by side in the longitudinal direction, and is provided at the end of the connecting type boundary block constituting the section or boundary. And a fitting portion formed in two or more circular convex shapes or circular concave shapes provided on the upper surface of the protruding portion. In addition, in the end concrete block for branching, it is formed into a projecting portion that is formed to project from one side to the side, and two or more circular convex shapes or circular concave shapes provided on the lower surface of the projecting portion. Provided with a fitted portion.

  By adopting such a configuration, the connection type boundary block can be fitted and connected to the two fitting portions. Therefore, by connecting a plurality of connection type boundary blocks to these two connection type boundary blocks, it is possible to form two rows of boundaries or sections with the end concrete block for branching according to the present invention as a terminal. . Moreover, in addition to being fixedly connected to the connecting boundary block, the branch end concrete block is also heavier than the conventional block, so the distance moved by the collision of the automobile is reduced. be able to. Thereby, advancement of the block into the roadway can be prevented. Furthermore, even if the automobile collides with the branching end concrete block or the connecting boundary block, each row can be prevented from being separated at the end. Also by this, it is possible to prevent the two rows of connected boundary blocks from separating and advancing to the road side as much as possible. In addition, since the structure which the edge part concrete block for a branch based on this invention and a connection type | mold boundary block are connected by the fitting part of circular convex shape or circular concave shape is employ | adopted, even after it installs, a connection type It is possible to change and adjust the angles of the connected boundary blocks by sliding the boundary blocks.

  Moreover, you may form the corner | angular part of the protrusion part of the edge part concrete block for a branch concerning this invention in arc shape. By adopting such a configuration, it is possible to connect two connected boundary blocks constituting a partition or boundary at an arbitrary angle from 0 ° to 180 °. Thus, two rows of partitions or boundaries can be constructed in any direction from 0 ° to 180 °.

  Moreover, the branch end concrete block according to the present invention may be provided with a column erecting portion including a hole into which the column is inserted. By adopting such a configuration, it is possible to stand a column on the column standing part and attach a guard rail or a road sign to the column. By installing the guard rail on the support column provided on the branch end concrete block, the end of the guard rail that is continuous from the two rows can be fixed with one branch end concrete block, so the two guard rail end portions The gap between them can be reduced. In addition, the end concrete block for branching is connected and installed to the connecting boundary block in addition to the area of the bottom surface being wider than the block for standing upright that has been conventionally used. The probability that the branch end concrete block will move or fall will be very low. As a result, the pillars standing on the pillar standing part from the impacted vehicle etc., and consequently the road sign attached to the pillar , Guardrails etc. can be protected.

  Moreover, the branch end concrete block according to the present invention may be provided with an attachment portion for attaching a buffer member for buffering a vehicle collision at the other end.

  By employ | adopting such a structure, the impact at the time of a vehicle colliding with the edge part concrete block for branching can be relieve | moderated with a buffer member. When a vehicle collides with a branching end concrete block, it seems that there are many cases of a frontal collision type, but in the case of such a frontal collision, a buffering effect is particularly effective. Generally, the vehicle absorbs the impact by crushing the front part at the time of collision and weakens the influence on the passenger, but when the guard rail is exposed, when the vehicle collides from the end side of the guard rail It will collide so that it may pierce an iron plate-like guardrail, and this effect cannot be acquired. However, by colliding with the end concrete block for branching, it is possible to prevent the vehicle from colliding directly with the guardrail as much as possible. The concrete block for end branching is considerably wider than the guardrail, so the vehicle collapses. Will be promoted properly and passenger safety will be improved. Therefore, it is not preferable to provide one terminal part at an acute angle, and it is preferable to provide one terminal part in an arc shape as shown in FIG.

  According to the branching end concrete block of the present invention, it is arranged at the final end of two rows of connected boundary blocks that are connected to form a partition or boundary, and is connected and integrated at the end. Can do. Therefore, even if a vehicle or the like collides with the side surface of the connection type boundary block or the branching end concrete block, it is possible to prevent the rows from being separated.

It is a perspective view of the edge part concrete block for branching concerning embodiment of this invention. It is a perspective view of the connection type | mold boundary block used with the edge part concrete block for branch which concerns on embodiment of this invention. It is a side view which shows the state which connected the edge part concrete block for a branch which concerns on embodiment of this invention to the connection type | mold boundary block. It is a perspective view which shows the state which connected the edge part concrete block for a branch which concerns on embodiment of this invention to the connection type | mold boundary block. It is a perspective view which shows other embodiment of the state which connected the edge part concrete block for a branch which concerns on embodiment of this invention to the connection type | mold boundary block. It is a perspective view which shows the edge part concrete block for branching concerning other embodiment of this invention. It is a side view which shows the state which connected the edge part concrete block for branch based on other embodiment of this invention to the connection type | mold boundary block. It is a perspective view which shows the edge part concrete block for a branch which concerns on the 3rd Embodiment of this invention. It is a perspective view which shows the edge part concrete block for a branch which concerns on the 4th Embodiment of this invention. It is a perspective view which shows the edge part concrete block for a branch which concerns on the 5th Embodiment of this invention. It is a perspective view which shows the edge part concrete block for a branch which concerns on the 6th Embodiment of this invention. It is a side view which shows the state which connected the edge part concrete block for a branch which concerns on the 6th Embodiment of this invention to the connection type | mold boundary block. It is a side view which shows the state which connected the edge part concrete block for a branch which concerns on the 7th Embodiment of this invention to the connection type | mold boundary block. It is a perspective view which shows the state which laid the conventional connection type | mold boundary block.

  Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the drawings. In addition, the Example and drawing demonstrated below illustrate 1 form of the Example of this invention, and are not used for the purpose of limiting to these structures.

  FIG. 1 is a perspective view schematically showing a branch end concrete block 100 according to the present invention. The branch end concrete block 100 mainly includes a protruding portion 10, a fitting portion 20, and a support column standing portion 30. The branch end concrete block 100 is substantially fan-shaped when viewed from a plane.

  The projecting portion 10 is formed so as to project laterally from the lower half of one end portion of the branching end concrete block 100 (fan arc portion side). The protruding portion 10 is a portion that is overlapped and connected to an upper protruding portion 2a (see FIG. 2) of the connecting boundary block 1 described later in detail. The protruding length of the protruding portion 10 is not particularly limited, and is determined in consideration of the protruding shape and protruding length of the connected boundary block 1 to be connected. The corner portion 10a of the protruding portion 10 is formed in an arc shape so as not to interfere with each other when the connecting boundary block 1 is arranged at an arbitrary angle.

  Two fitting portions 20 are formed in a circular convex shape, and two fitting portions 20 are provided on the upper surface of the protruding portion 10. The fitting concave portion 2c (see FIG. 2) of the connection type boundary block 1 is fitted into the fitting portion 20 formed in this circular convex shape. The installation width of the two fitting portions 20 provided side by side is not limited, but it is desirable to set the width so that the two connected blocks contact each other when connected to the connected boundary block 1. . If installed in such a width, there is no gap between the branched blocks, and the most compact installation is possible. In the center of the fitting portion 20, a bolt hole 21 into which a bolt for completely fixing the branch end concrete block 100 and the connecting boundary block 1 is inserted.

  The column erecting portion 30 is provided with two holes 30a and 30a for erecting a guardrail column near the center of the branch end concrete block 100, and a road near the end opposite to the connecting side. A hole 30b is provided for standing the sign post. The column erecting portion 30 is formed with a hole having a slightly larger diameter than the column to be inserted.

  Next, since the branch end concrete block 100 exhibits a high effect when used with the connection type boundary block 1, first, a preferred embodiment of the connection type boundary block 1 used with the present embodiment. explain.

  FIG. 2 shows a perspective view of the connecting boundary block 1 used with the first embodiment. The connected boundary block 1 is a block that is connected to form a partition or a boundary, and is mainly used in the central part of the partition or the boundary. Both ends 2 and 3 of the connecting type boundary block 1 are formed in a semicircular arc shape, and one end portion 2 thereof includes a first upper projecting portion 2a provided with an upper half projecting in the longitudinal direction. Yes. The other end portion 3 includes a first lower protruding portion 3a provided with a lower half protruding in the longitudinal direction. These 1st protrusion parts 2a and 3a are parts where the connection type | mold boundary block 1 arrange | positioned adjacently overlaps. The first lower protrusion 3a is provided with a first bolt hole 3b for inserting a bolt at the center of the arc on the upper surface thereof. And the 1st fitting convex part 3c formed in circular convex shape centering on this 1st bolt hole 3b is provided. This 1st fitting convex part 3c makes the shape similar to the fitting part 20 of the edge part concrete block 100 for a branch of Example 1. FIG. On the other hand, a penetrating bolt hole 2b for inserting a bolt into the center of the arc is provided in the first upper protrusion 2a on the opposite side. And the 1st fitting recessed part 2c formed in the circular concave shape of the shape substantially reversed to the said 1st fitting convex part 3c is provided in the lower surface of the 1st upper side protrusion part 2a. The connection type boundary block 1 may be provided with a column mounting hole 5 for mounting the column of the guard rail at an arbitrary position on the upper surface.

  A plurality of connected boundary blocks 1 thus manufactured are connected to form a section by fitting the first fitting convex portion 3c and the first fitting concave portion 2c so as to overlap each other (see FIG. 4). At this time, when installing along a curved road or the like, adjacent connected boundary blocks are installed at an angle according to the curvature of the road (not shown).

  The connected boundary block 1 is not limited to the above-described one, and both ends 2 and 3 may be formed in a rectangular shape, and the first upper protruding portion 2a and the first lower protruding portion 3a are rectangular. It may be formed.

  As shown in FIGS. 3 and 4, the branch end concrete block 100 according to the present invention is installed at the end of the connected connected boundary block 1. More specifically, the projecting portion 10 of the branching end concrete block 100 is overlapped with the first upper projecting portion 2a of the connection type boundary block 1 at an appropriate angle, and the first fitting recess 2c and the fitting portion 20 are respectively overlapped. Connected together. In this way, the branch end concrete block 100 and the connecting boundary block 1 are connected to each other. Further, the branch end concrete block 100 and the connecting boundary block 1 are completely fixed to the bolt hole 2b and the bolt hole 21 through bolts. Similarly, another connection type boundary block 1 is connected to the remaining fitting portions 20, and the connection type boundary block 1 extending in one direction from one branch end concrete block 100 is connected. Further, a plurality of other connected boundary blocks 1 are connected to these connected boundary blocks 1 to form blocks or boundaries (FIG. 4). Even after the connection, if the bolt is loosened, the first fitting recess 2c and the fitting portion 20 are rotated while sliding to adjust to various angles between the connection type boundary blocks 1. can do. For example, as shown in FIG. 5, the angle can be changed in accordance with the branching angle. If the branching concrete block 100 of this invention is used, the mutual angle of the two connected connection type | mold boundary blocks 1 can be freely changed and installed between 0 degrees and 180 degrees.

  And the support | pillar 60 is set up in the hole 30a of the support | pillar standing part of the branch end part concrete block 100, and the support | pillar 60 is set up in the support | pillar mounting hole 5 of the connection type | mold boundary block 1, Then, the guard rail 6 is attached to the support | pillar 60 Install. Further, a road sign post 61 is erected in the hole 30 b of the post standing part 30, and a road sign 66 is attached to the post 61. Thus, the connecting boundary block 1 connected to the branching end concrete block 100 of the present invention is extended in two directions to form a section or boundary having a guardrail. As described above, the branching end concrete block 100 of the present invention is particularly effective when it is installed at a branching portion of a road, for example.

  The present invention is not limited to the above-described embodiment, and can be implemented in various modes as long as it belongs to the technical scope of the present invention.

  For example, in the above-described embodiment, the corner portion 10a of the protruding portion 10 is formed in an arc shape, but may be an acute corner portion 10b as shown in FIG. Even in this case, if the one end 2 and the tip of the first upper protruding portion 2a are formed in an arc shape like the connected boundary block 1 described above, the installation angle of 0 ° to 180 ° Can be secured. Moreover, even if the one end 2 of the connection type | mold boundary block 1 and the 1st upper side protrusion part 2a are formed in the rectangle, as shown in FIG. 7, the edge part 15 of the branch end concrete block 100 and If there is a gap between the upper projecting portion 2a of the connecting boundary block 1 and between the lower projecting portion 10 of the branching end concrete block 100 and the end portion 2 of the connecting boundary block 1, a certain amount A degree of freedom in angle can be secured.

  In the above-described embodiment, the fitting portion 20 is a circular convex fitting portion 20, but may be a circular concave fitting portion 20 as shown in FIG. In this case, if a fitting convex portion is used instead of the fitting concave portion 2c of the connection type boundary block 1, the same effect can be obtained.

  In the above-described embodiment, three holes are formed to form the column erecting portion 30, but the number of holes is not limited, and only the hole 30a for installing the guardrail column or a road sign is provided. Only the hole 30b for erecting the support column may be used, or there may be no hole.

  Furthermore, the shape of the entire branching end concrete block is not limited to a sector shape, and as shown in FIG. 9, the shape of the entire branching end concrete block 100 may be formed in a substantially rectangular shape. If formed in this way, it is effective when the branching angle of the blocks constituting the section or boundary is wide.

  Furthermore, as shown in FIG. 10, an attachment portion 31c for attaching a barrel-shaped buffer member 40 storing water or sand may be provided at the end of the branching end concrete block 100. The attachment portion 31 c may be formed in a concave shape so as to fit the buffer member 40. By adopting such a configuration, it is possible to mitigate an impact caused by a vehicle collision. Further, a nut that can be screwed into a bolt 50 having a ring-shaped head is provided on the branch end concrete block 100, whereby the buffer member 40 installed on the attachment portion 31 c is connected to the wire 52. It can be fixed with.

  Furthermore, as shown in FIG. 11, a recess 70 may be provided on the surface of the block for the convenience of installing a guard rail or the like. By providing the recess 70, as shown in FIG. 12, it is possible to install even a guard rail 65 of a type whose end is swollen downward.

  Further, in the above-described embodiment, all the protruding portions 10 are described as being protruded laterally from the lower half of one end of the branching end concrete block 100 (part side of the fan-shaped arc). However, the protrusion 10 may be formed to protrude from the upper half to the side. In this case, the fitting portion 20 is provided on the lower surface of the protruding portion 10. Such a branching end concrete block 100 is connected to the end 3 on the opposite side of the connecting boundary block 1 (FIG. 13), thereby obtaining the same effect.

  In addition, the branch end concrete block 100 and the connecting boundary block 1 in the laid state may be used with the block body buried in the ground.

100 Concrete block 10 for branching 10 Protruding part 20 Fitting part 30 Prop standing part 10a Corner part 21 Bolt hole 30a, 30b, 30c hole

Claims (5)

In the end concrete block for branching that is placed side by side in the longitudinal direction and is installed at the terminal end of a connected boundary block that constitutes a partition or boundary,
A projecting portion formed to project sideward from below one end;
A branch end concrete block comprising a connecting end portion having two or more circular convex shapes or fitting portions formed on the upper surface of the projecting portion. In the end concrete block for branching that is placed side by side in the longitudinal direction and is installed at the terminal end of a connected boundary block that constitutes a partition or boundary,
A protruding portion that is formed to protrude from the upper side of one end side;
A branch end concrete block comprising a fitting portion formed in two or more circular convex shapes or circular concave shapes provided on a lower surface of the projecting portion.   The corner concrete part of the protrusion part is formed in the shape of an arc, The end part concrete block for branching according to claim 1 or 2 characterized by things.   The branch end concrete block according to any one of claims 1 to 3, further comprising a column erecting portion including a hole into which the column is inserted.   The branch end concrete block according to any one of claims 1 to 4, further comprising an attachment portion to which a shock absorbing member for buffering a vehicle collision is attached at the other end portion.

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