JPH068424U - Seawall stair block - Google Patents

Abstract

(57) [Summary] [Purpose] For stair blocks that could only be used for revetments on slopes with gentle slopes, the joint surface has a mating structure, and tapered holes are made to communicate between the blocks in the front and rear rows for comparison. It was possible to lay on a steep slope. In addition, a concave surface was provided on the stairs to give undulations to the slopes. [Structure] A rear portion of a front row block and a fitting through cutout portion are provided at a lower portion of a front end of the block, and a tapered hole penetrating from a rear end surface of the block to the cutout surface is provided. In addition, a concave surface that is concave toward the front end is provided on the upper surface of the upper protruding portion of the cutout portion.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a staircase block for a seawall that can be laid on the waterfront part of a coast or river to maintain the topographical stability of the part and also to maintain a beautiful appearance. is there.

[0002]

[Prior art]

 Conventionally, as shown in FIG. 1, this kind of staircase block is generally laid by face-to-face bonding in which the front end face a and the rear end face b of a trapezoidal block, which are thicker as they go forward, are butt-joined. Has been done.

[0003]

[Problems to be solved by the device]

 Conventional staircase blocks can only be laid by face-to-face joining, where the end faces are joined together as a joint, so there is a lateral force due to laying arrangements such as staggering every other block. Although it can be dealt with to some extent, it is completely ineffective in vertical force and can be used only on slopes with a gentle slope, and in particular in the case of an earthquake accompanied by ups and downs, it easily collapses and is washed away. There was a problem.

[0004]

[Means for solving problems]

 According to the present invention, the lower portion of the front end of the main body is provided with a notch portion that covers the rear portion of the front row block and fits in a hook shape, so that the lower surface of the overhang portion protruding above the notch portion is the rear portion of the front row block. The end of the notch is joined to the rear end face of the front row block on the upper surface so that it fits in a hook shape, and it is possible to obtain a strong joint in the vertical relationship.

Further, in order to further strengthen the joining of the parallel blocks, the tremie hole method which has been conventionally used for the Hebec block is applied, and the tapered holes provided between the laying blocks are connected in parallel to each other to make the concrete It was filled and fixed integrally.

Furthermore, by providing a recessed surface of an appropriate shape that is recessed toward the front end on the upper surface of the overhanging portion, various creative undulations can be added to the staircase shape after laying, further enhancing the aesthetics of the waterfront. Can be improved.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. Reference numeral 1 denotes the main body of the block according to the present invention, which has the thickest thickness on the front end side 1a and becomes thinner toward the rear side, and has a trapezoidal sideways shape as a whole.

The lower part of the front end side 1a is provided with a notch 2 that fits into the rear part Ab of the front row block A, and a protruding part 3 protruding above the notch 2 is provided on the upper surface of the rear part Ab of the front row block. Overlapping, the overhanging portion Xa of the rear row block X is superposed on the upper surface of the rear portion 1b of the main body block 1, and a step is formed rearward from the front row block with the thickness thereof as a step.

The rear portion 1b of the main body block 1 is provided with taper holes 4a and 4b penetrating from the rear end surface 11 to the notch surface 12 on the left and right, and the notch portion 2 is fitted to the rear portion of the front row block A during installation. In doing so, the front row block A is configured to communicate with the taper hole Ac that penetrates from the rear end surface to the cutout surface.

When the blocks are arranged in a zigzag pattern, as shown in FIG. 6, the right taper hole 4a is in the left taper hole Ac of the front row block A, and the left taper hole 4b is in the front row block B. It is configured to communicate with the right taper holes Bc, respectively.

Since the taper hole 4 is tapered, it communicates with the front and rear blocks in a wedge shape as shown in FIG. 4, and when the blocks are paralleled with each other, a wedge-shaped through hole is formed to form a wedge-shaped through hole. Is very strongly linked and fixed.

FIG. 5 and FIG. 6 show an embodiment in which an appropriately shaped concave surface 5 that is concave toward the front end is provided on the upper surface of the overhanging portion 3, and the thickness of the overhanging portion 3 is a concave surface. It becomes thinner by 5 and the step becomes gentler, and depending on the combination of blocks at the time of laying, a pattern is displayed on the entire laying surface and undulation is given to the slope of the stairs.

[0013]

[Effect of device]

 Since the present invention is configured as described above, the notch 2 provided at the front end of the block is fitted to the rear back portion Ab of the front row block A, and the overhanging portion 3 protruding above the notch 2 is the front row block. Since the overhanging portion Xa of the rear row block X is superposed on the upper surface of the back portion Ab of the block 1 and the overhanging portion Xa of the rear row block X is formed on the upper surface of the rear portion Ab of the block 1, it is strong enough to withstand the vertical force. I was able to obtain a good laying structure.

Further, the strength can be further increased by connecting the tapered holes 4 and filling with concrete, and by providing the concave surface 5 on the upper surface of the overhanging portion 3, the step difference can be gently curved. It is extremely effective for environmental improvement and slope protection, such as the formation of stairs that take advantage of the above.

[Brief description of drawings]

FIG. 1 is a side view of a slope on which a conventional stair block without the present invention is laid.

FIG. 2 is a side view of a slope on which a stair block according to the present invention is laid.

FIG. 3 is a perspective view showing an example of a staircase block according to the present invention.

FIG. 4 is a vertical sectional view of a laying block showing a communication state of tapered holes.

FIG. 5 is a perspective view showing an embodiment in which a concave surface is provided on the upper surface of the protruding portion.

FIG. 6 is a plan view showing the laying condition according to the same embodiment as FIG.

[Explanation of symbols]

 1 Block main body 1a Front end side of block main body 1b Rear part of block main body 11 Rear end surface of block main body 12 Cutout surface of block main body 2 Cutout portion of block main body 3 Overhanging portion of block main body 4 Tapered hole 5 Recessed surface 4a Block main body Right side tapered hole 4b Left side tapered hole of block body Ac Left side tapered hole of front row block A Bc Right side tapered hole of front row block B

Claims (3)

[Scope of utility model registration request] 1. A notch part that fits into a rear part of a front row block is provided in a lower part of a front end of a main body whose thickness increases as it goes forward as a whole, and a thickness of an overhang part projecting above the notch part is stepped. Stair block for revetment characterized by being configured as 2. When a taper hole penetrating from the rear end face to the notch face is provided, and when fitted to the rear back part of the front row block during installation,
The staircase block for revetment according to claim 1, characterized in that the tapered hole communicates with a tapered hole penetrating from the rear end surface of the front row block to the cutout surface. 3. The "claim 1" characterized in that a recessed surface of an appropriate shape is provided on the upper surface of the overhanging portion so as to recess toward the front end.
Stair block for seawall according to claim 2