JPH033622Y2 - - Google Patents
Info
- Publication number
- JPH033622Y2 JPH033622Y2 JP1984054701U JP5470184U JPH033622Y2 JP H033622 Y2 JPH033622 Y2 JP H033622Y2 JP 1984054701 U JP1984054701 U JP 1984054701U JP 5470184 U JP5470184 U JP 5470184U JP H033622 Y2 JPH033622 Y2 JP H033622Y2
- Authority
- JP
- Japan
- Prior art keywords
- leg
- cavity
- block
- base
- wave
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000007787 solid Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 5
- 238000010276 construction Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000011800 void material Substances 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Landscapes
- Revetment (AREA)
Description
【考案の詳細な説明】
本考案は消波用コンクリートブロツクに係るも
のである。[Detailed Description of the Invention] The present invention relates to a concrete block for wave dissipation.
従来、この種のコンクリートブロツクはブロツ
ク自体の外形によつて形成された空隙部によつて
波浪のエネルギを吸収するようにしているので、
ブロツクが大型になる程空隙率が大まかになり、
波浪のエネルギの吸収効果が低減するという難点
があつた。 Conventionally, this type of concrete block absorbs wave energy through voids formed by the outer shape of the block itself.
The larger the block, the rougher the porosity,
The problem was that the effect of absorbing wave energy was reduced.
また近年消波用コンクリートブロツクが大型化
し、重量が30トン、50トンに達する大型のコンク
リートブロツクが製造されるようになつた。この
ような大型コンクリートブロツクの製造に当つ
て、大量のコンクリートを一度に打設すると、コ
ンクリートの硬化熱の発生によつて温度が急激に
上昇し、ひび割れが生じ、十分な強度が得られな
い場合がある。 In recent years, concrete blocks for wave dissipation have become larger, and large concrete blocks weighing up to 30 and 50 tons have come to be manufactured. When manufacturing such large concrete blocks, if a large amount of concrete is poured at once, the temperature will rise rapidly due to the heat generated by the concrete, causing cracks and insufficient strength. There is.
この傾向は多脚ブロツクにおける脚片が放射状
に岐出する肉厚のブロツク中心部分において顕著
である。 This tendency is remarkable in the thick central part of the multi-legged block where the legs branch out radially.
本考案はこのような問題点を解決するために提
案されたもので、４個の円形または多角形断面の
中実の脚片１が、ブロツク中心部より互いに放射
状に岐出されて一体成型された多脚コンクリート
ブロツクの中心部に空窩２を設けるとともに、同
空窩２より、各脚片１頂部間で、脚片壁の脚軸方
向の長さが最短距離となる壁面上の各脚片１基部
に、先端部が開口する放射状の空洞３を穿設し、
１つの同脚片１基部から反対側の脚片１基部に向
けて前記空窩２及び空洞３による連通孔を設けて
なることを特徴とする消波用コンクリートブロツ
クに係るものである。 The present invention was proposed to solve these problems, and consists of four solid leg pieces 1 with circular or polygonal cross sections that are integrally formed and radially branch out from the center of the block. A cavity 2 is provided in the center of the multi-legged concrete block, and from the cavity 2, each leg on the wall surface where the length in the leg axis direction of the leg wall is the shortest distance between the tops of each leg piece 1 is provided. A radial cavity 3 with an opening at the tip is bored at the base of the piece 1,
This relates to a wave-dissipating concrete block characterized in that a communication hole is provided by the cavity 2 and the cavity 3 from the base of one leg piece 1 on the opposite side to the base of the leg piece 1 on the opposite side.
なお図示の実施例において、前記脚片１は截頭
角錐柱に形成されている。また図中４は前記脚片
１の基部に設けられた前記空洞３の先端開口部で
ある。 In the illustrated embodiment, the leg piece 1 is formed into a truncated pyramidal prism. Further, numeral 4 in the figure is the opening at the tip of the cavity 3 provided at the base of the leg piece 1.
本考案に係るコンクリートブロツクは使用に当
つて、通常、従来の晶波ブロツクと同様に第８図
に示すように所要の海岸に捨込まれるものであ
る。 When the concrete block according to the present invention is used, it is normally dumped on a desired shore as shown in FIG. 8 in the same way as the conventional crystal wave block.
本考案においては前記したように、４個の円形
または多角形断面の脚片１がブロツク中心部より
互いに放射状に岐出された多脚コンクリートブロ
ツク内の中心部に空窩２が設けられ、同空窩２よ
り各脚片１頂部間で、脚片壁の脚軸方向の長さが
最短距離となる壁面上の各脚片１基部に、先端部
が開口する空洞３を穿設し、１つの同脚片１基部
から反対側の脚片１基部に向つて前記空窩２と空
洞３とによる連通孔を設けたので、前記多脚コン
クリートブロツクの敷設によつて生じた同ブロツ
ク相互間の空隙、及びブロツク自体の空隙に波浪
が進入すると、各空隙の断面が異なるので波浪の
エネルギが調圧され、エネルギが著しく減殺され
顕著な消波効果が発揮されるものである。 In the present invention, as described above, a cavity 2 is provided at the center of a multi-legged concrete block in which four leg pieces 1 each having a circular or polygonal cross section extend radially from the center of the block. A cavity 3 whose tip end is open is bored at the base of each leg piece 1 on the wall surface where the length of the leg wall in the leg axis direction is the shortest distance between the tops of each leg piece 1 from the cavity 2, Since a communication hole is provided between the cavity 2 and the cavity 3 from the base of one leg piece on the opposite side to the base of one leg piece on the opposite side, the communication hole between the same blocks caused by the laying of the multi-leg concrete blocks is When waves enter the voids and the voids in the block itself, the energy of the waves is regulated because the cross sections of each void are different, and the energy is significantly reduced and a remarkable wave-dissipating effect is exerted.
この際、本考案においては前記各空洞３の先端
部が波浪の収斂部に相当する、前記各脚片１頂部
間で脚片壁の脚軸方向の長さが最短距離となる脚
片壁面上の各脚片１基部に開口しているので、ブ
ロツク各方面からくる波浪の最大エネルギ部が中
心空窩２に集約され、衝突し合つて有効に減殺さ
れるものであり、前記脚片１の脚軸方向に空洞を
貫通せしめた場合に比して消波減勢効果が遥かに
大きい。 At this time, in the present invention, the tip of each cavity 3 corresponds to a wave convergence part, and the length of the leg wall in the leg axis direction is the shortest distance between the tops of the leg pieces 1. Since the opening is at the base of each leg 1 of the block, the maximum energy part of the waves coming from each direction of the block is concentrated in the central cavity 2, collides with each other, and is effectively attenuated. The wave dissipation and energy reduction effect is much greater than when the hollow is penetrated in the leg axis direction.
従来、消波ブロツクを設置した場合、同消波ブ
ロツクの外形部分間に形成された空間部による空
隙率は、設置されたブロツクの状態が、設置後の
経過とともに可成りの差異を生じ、ブロツクが大
型化する程空隙率が大まかになり安定した空隙率
を確保できないため、期待した消波減勢効果が得
られないが、本考案に係るコンクリートブロツク
においては、ブロツク自体に中心空窩２、放射状
の空洞３及び先端開口部４が設けられているの
で、ブロツクの設置方法や、設置後の時間経過に
かかわらず、ブロツク単体のもつ空隙率は不変
で、一定した空隙率を保有し、安定した空隙率が
確保され、より長期的な消波減勢効果が得られ、
また前記したようにブロツク自体に空隙を有する
ため、ブロツク相互間全体の空隙率が従来のブロ
ツクより大きくなり、施工断面当りのブロツク使
用個数が節減され、工費が低減される。 Conventionally, when a wave-dissipating block is installed, the porosity due to the space formed between the external parts of the wave-dissipating block varies considerably depending on the condition of the installed block over time after installation, and As the concrete block becomes larger, the porosity becomes rougher and a stable porosity cannot be ensured, and the expected wave dissipation and energy reduction effect cannot be obtained.However, in the concrete block according to the present invention, the block itself has a central cavity 2, Since the radial cavity 3 and the tip opening 4 are provided, the porosity of the block itself remains unchanged regardless of the installation method of the block or the time elapsed after installation.It maintains a constant porosity and is stable. This ensures a high porosity and provides a long-term wave dissipation and energy reduction effect.
Furthermore, as described above, since the blocks themselves have voids, the overall void ratio between the blocks is greater than that of conventional blocks, reducing the number of blocks used per construction cross section and reducing construction costs.
更に本考案においては前記開口部４が、ブロツ
ク中心部において会合する各３個の脚片１の基端
部間に形成された三角形状部に設けられることな
く、相隣る同三角形状部の中間に位置する脚片１
頂部間で脚片壁の脚軸方向の長さが最短距離とな
る脚壁面上の各脚片基部に設けられているので、
前記三角形状部に開口部を設けた場合に比して２
個所多い６個所において開口部４を設けることが
できるので、ブロツクの空隙が大きくとれ、波の
分散度がよくなる。 Furthermore, in the present invention, the opening 4 is not provided in the triangular part formed between the base ends of each of the three leg pieces 1 that meet at the center of the block, but in the triangular part formed between the adjacent same triangular parts. Leg piece 1 located in the middle
Since it is provided at the base of each leg on the leg wall surface where the length of the leg wall in the leg axis direction is the shortest distance between the tops,
2 compared to the case where an opening is provided in the triangular part.
Since the openings 4 can be provided at six locations, the gap between the blocks can be made larger and the degree of wave dispersion can be improved.
また本考案によれば、前記開口部４は脚片１の
最も大きい個所に相当する前記脚壁面上の各脚片
基部に設けられているので、強度の低下を最少限
に抑えることができる。 Further, according to the present invention, since the openings 4 are provided at the bases of each leg on the leg wall surface corresponding to the largest portions of the leg 1, a decrease in strength can be minimized.
更に本考案によれば、多脚型の消波用コンクリ
ートブロツクにおいて最も厚みが大で、製作時に
おいてコンクリート硬化熱が最も発生し易い個所
に当る、各脚片１が放射状に岐出するブロツク中
心部に空窩２が設けられたことによつて、本考案
のブロツク製作時、同空窩２を介してコンクリー
ト硬化時の熱が発散され、ひび割れの発生が防止
される。 Furthermore, according to the present invention, each leg piece 1 branches out radially from the center of the block, which is the thickest part of a multi-legged wave-dissipating concrete block and is the part where concrete hardening heat is most likely to be generated during manufacturing. By providing the cavity 2 in the block, heat during hardening of the concrete is dissipated through the cavity 2 during manufacture of the block of the present invention, thereby preventing the occurrence of cracks.
更にまた本考案によれば、各脚片１の先端部が
中実であるため、ブロツクの重心位置が低く波浪
に対する安定性が大であり、本考案のブロツクを
積上げて、構築体を構成しうるものである。 Furthermore, according to the present invention, since the tip of each leg piece 1 is solid, the center of gravity of the block is low and stability against waves is high, and the blocks of the present invention can be stacked to form a construction. It is something that can be used.
第１図は本考案に係る消波用コンクリートブロ
ツクの正面図、第２図はその平面図、第３図はそ
の背面図、第４図はその側面図、第５図はその底
面図、第６図はその斜面図、第７図は第１図の矢
視−図、第８図は本考案に係る消波用コンク
リートブロツクの使用状態を示す説明図である。
１……脚片、２……空窩、３……空洞、４……
先端開口部。
Figure 1 is a front view of the wave-dissipating concrete block according to the present invention, Figure 2 is its top view, Figure 3 is its rear view, Figure 4 is its side view, Figure 5 is its bottom view, and Figure 5 is its bottom view. FIG. 6 is a slope view thereof, FIG. 7 is a view taken along the arrow in FIG. 1, and FIG. 8 is an explanatory view showing the usage state of the wave-dissipating concrete block according to the present invention. 1...leg piece, 2...hollow, 3...hollow, 4...
Tip opening.
Claims (1)
が、ブロツク中心部より互いに放射状に岐出され
て一体成型された多脚コンクリートブロツクの中
心部に空窩２を設けるとともに、同空窩２より、
各脚片１頂部間で、脚片壁の脚軸方向の長さが最
短距離となる壁面上の各脚片１基部に、先端部が
開口する放射状の空洞３を穿設し、１つの同脚片
１基部から反対側の脚片１基部に向けて前記空窩
２及び空洞３による連通孔を設けてなることを特
徴とする消波用コンクリートブロツク。 4 solid legs with circular or polygonal cross section 1
However, a cavity 2 is provided in the center of the multi-legged concrete block which is integrally formed by branching out radially from the center of the block, and from the cavity 2,
A radial cavity 3 with an open tip is bored at the base of each leg 1 on the wall surface where the length of the leg wall in the leg axis direction is the shortest distance between the tops of each leg 1. A wave-dissipating concrete block characterized in that a communication hole is provided by the cavity 2 and the cavity 3 from the base of one leg to the base of the opposite leg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5470184U JPS60169318U (en) | 1984-04-16 | 1984-04-16 | concrete block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5470184U JPS60169318U (en) | 1984-04-16 | 1984-04-16 | concrete block |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60169318U JPS60169318U (en) | 1985-11-09 |
| JPH033622Y2 true JPH033622Y2 (en) | 1991-01-30 |
Family
ID=30576690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5470184U Granted JPS60169318U (en) | 1984-04-16 | 1984-04-16 | concrete block |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60169318U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100903395B1 (en) * | 2008-07-14 | 2009-06-18 | 범아건설 주식회사 | Tetrapod for safety, coastal structures using that and method of construction thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5456228A (en) * | 1977-10-11 | 1979-05-07 | Iori Kikuchi | Hollow fourrlegs block |
-
1984
- 1984-04-16 JP JP5470184U patent/JPS60169318U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5456228A (en) * | 1977-10-11 | 1979-05-07 | Iori Kikuchi | Hollow fourrlegs block |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60169318U (en) | 1985-11-09 |
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