JPS61137911A - Reinforcing block for ground - Google Patents
Reinforcing block for groundInfo
- Publication number
- JPS61137911A JPS61137911A JP25993084A JP25993084A JPS61137911A JP S61137911 A JPS61137911 A JP S61137911A JP 25993084 A JP25993084 A JP 25993084A JP 25993084 A JP25993084 A JP 25993084A JP S61137911 A JPS61137911 A JP S61137911A
- Authority
- JP
- Japan
- Prior art keywords
- block
- area
- shaped
- recessed
- upside
- 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.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/08—Improving by compacting by inserting stones or lost bodies, e.g. compaction piles
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Agronomy & Crop Science (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Retaining Walls (AREA)
- Revetment (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は軟弱な地盤を補強するための地盤補強用ブロッ
クに関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a ground reinforcing block for reinforcing soft ground.
（従来技術）
従来、地上に住宅、工場、護岸擁壁などの各種構築物を
改造したり、道路、下水道管などを敷設する際に、地盤
が軟弱で十分な強度を有しない場合には、一般に玉石や
独楽形のコンクリート製ブロックが利用されていた。(Prior art) Conventionally, when remodeling various structures such as houses, factories, and retaining walls on the ground, or when laying roads, sewer pipes, etc., when the ground is soft and does not have sufficient strength, Cobblestones and top-shaped concrete blocks were used.
（発明が解決しようとする問題点）
これらのうち、玉石を利用する方法は、天然の玉石は入
手が容易でなくまた人造玉石はコスト的に不利であるば
かりでなく一般に、大量の 、１玉石を使用する割には
その効果が必ずしも満足されるものでなかった。また、
独楽形ブロックを利用する方法は・近年クローズアップ
され、稲々の態様のものが開発されて利用されつつある
。(Problems to be Solved by the Invention) Among these methods, the method of using cobblestones is not only because natural cobblestones are not easy to obtain, but also because artificial cobblestones are disadvantageous in terms of cost. Although it is used, the effect is not necessarily satisfactory. Also,
Methods of using top-shaped blocks have been attracting attention in recent years, and rice-shaped blocks have been developed and are being used.
しかし、その基本的形態が中央に軸脚を有する所謂独楽
形である°ために、保管空間や位置安定性などの点から
保管上不利であり、また、保管や運搬などの取扱い中に
、軸脚が破損し易いなどの欠陥を有している。However, because its basic form is a so-called spinning top with a pivot leg in the center, it is disadvantageous in terms of storage space and positional stability. It has defects such as the legs being easily damaged.
本発明は、これらの現状に鑑み、軸脚なと破損し易い突
出部がなく、保管空間上有利であり、位置安定性も良好
であって、且つ、地盤補強効果も充分なブロックを提供
するものである。In view of these current circumstances, the present invention provides a block that does not have a protruding part that is easily damaged like a pivot leg, is advantageous in terms of storage space, has good positional stability, and has a sufficient ground reinforcement effect. It is something.
（問題点を解決するための手段及び作用）本発明のブロ
ックの基本的形態は、実質的に平面状の上面を有し、該
上面の面積の０．５割以上の面積を有する凹陥部が裏面
に設けられているブロックである。(Means and effects for solving the problems) The basic form of the block of the present invention has a substantially planar upper surface, and a recessed portion having an area of 0.50% or more of the area of the upper surface. This is a block on the back.
第１図に本発明のブロックの代表的態様の斜視図を示す
。第２図は第１図におけるＡ −Ａ’の断面図である。FIG. 1 shows a perspective view of a typical embodiment of the block of the present invention. FIG. 2 is a sectional view taken along line A-A' in FIG.
本発明のブロックは、従来の独楽形ブロックと同様に軟
弱地盤層に敷設して基盤を形成し、そのまま、或は基盤
の上にロードマット、条数部材を敷設などして利用する
ものである。そのため補強後の基盤面を平面に保持する
うえからブロック上面は実質的に平面状であることが必
要である。つまり、主面に例えば深さの浅い凹凸状の模
様などが付されることは何ら支障ないが上面全体として
みた場合弯曲面でなく実質的に平面状でなければならな
い。なお、後記するが第１１図に示すように、隣接する
ブロックとの接続部を設ける場合は、該接続部において
は必ずしも平面状である必要はない。The block of the present invention, like the conventional top-shaped block, is laid on a soft ground layer to form a base, and used as it is or by laying a road mat or strip member on the base. . Therefore, in order to keep the reinforced base surface flat, it is necessary that the upper surface of the block is substantially flat. In other words, although there is no problem in having a shallow uneven pattern on the main surface, the upper surface as a whole must be substantially flat and not curved. Note that, as will be described later, as shown in FIG. 11, when a connecting portion with an adjacent block is provided, the connecting portion does not necessarily have to be planar.
本発明の最大の特徴は、ブロック上面の面積の０．５割
以上の面積を有する凹陥部がブロック裏面に設けられて
いることである。The most important feature of the present invention is that a recessed portion having an area of 0.50% or more of the area of the top surface of the block is provided on the back surface of the block.
第１図及び第２図においては、軸脚のない独楽形状を有
し、裏面の中央部に円錐状の凹陥部１が設けられている
。該凹陥部の存在によってブロックを軟弱地盤層に敷設
した場合に、軟弱地盤層中の土砂礫等が該凹陥部中に入
り込み、ブロックに対し上向きの応力を与え、ブロック
の沈下を抑止する。従来の独楽形ブロックの代表的態様
を第２図に示すが（ａ）図は斜視図、（ｂ１図は（ａ１
図におけ６Ａ〜八′へ面図である。このような従来の独
薬形ブロック（二あっては、円板部３に続く下方の逆円
錐部４の斜面に対して作用する軟弱地盤層からの応力の
鉛直成分だけがブロックの沈下を抑止する機能を負担し
ていた。In FIGS. 1 and 2, it has a top shape without a pivot leg, and a conical recess 1 is provided in the center of the back surface. When a block is laid on a soft ground layer due to the presence of the recessed part, sand and gravel in the soft ground layer enters into the recessed part, exerts upward stress on the block, and prevents the block from sinking. A typical aspect of a conventional top-shaped block is shown in FIG. 2, where (a) is a perspective view and (b1 is (a1)
It is a side view from 6A to 8' in the figure. In such a conventional dome-shaped block (2), only the vertical component of the stress from the soft ground layer acting on the slope of the inverted cone section 4 below following the disc section 3 prevents the block from sinking. It was burdened with the function to do so.
しかし、本発明のブロックにおいては、前記のように下
面に設けられた凹陥部に軟弱地盤層中の土砂礫等が入り
込み、しかも紋土砂礫等は所謂逃げ場がなくそのためブ
ロックの沈下を強力に抑止する応力が発生する。更に、
従来の独楽形ブロック１と・同様に、円板部３＃に続く
下方の逆円錐台部４の斜面に対して作用する軟弱地盤層
からの応力の鉛直成分もブロックの沈下を抑止する。即
ち概括的に言えば本発明のブロックにおいては、従来の
独楽形ブロックよりも凹陥部の存在によって発生するヨ
沈下抑止力分だけ抗沈下性が大きい。しかも、凹陥部の
存在によって発生する沈下抑止力は、従来の独楽形ブロ
ックにみられた沈下抑止力よりも格段に大きい。即ち、
従来の独楽形ブロックの円板部３に続く下方の逆円錐台
部４Ｃ二接触する軟弱地盤層の土砂礫等は、ブロックに
荷・重が負荷された場合に、該逆円錐台部４の斜面上を
ある摩擦係数の下で滑り、ブロックに対して相対的に上
昇し、その結果ブロックは沈下する傾向がみられる。However, in the block of the present invention, as mentioned above, the earth and gravel in the soft ground layer enters the recessed part provided on the lower surface, and there is no place for the sand and gravel to escape, so it strongly prevents the block from sinking. Stress occurs. Furthermore,
Similar to the conventional top-shaped block 1, the vertical component of stress from the soft ground layer acting on the slope of the inverted truncated cone section 4 below following the disk section 3# also prevents the block from sinking. That is, generally speaking, the block of the present invention has a greater anti-settling property than the conventional top-shaped block by the amount of the anti-settling force generated by the presence of the recessed portion. Furthermore, the anti-sinking force generated by the presence of the concave portion is much greater than the anti-sinking force found in conventional top-shaped blocks. That is,
The lower inverted truncated cone part 4C following the disc part 3 of the conventional top-shaped block is in contact with the earth and gravel of the soft ground layer, when a load is applied to the block. It slides on the slope under a certain coefficient of friction, rises relative to the block, and as a result the block tends to sink.
これに対し、本発明のブロックの凹陥部Ｉ Ｃ入り込ん
だ軟弱地盤層の土砂礫等は前記の・ように所謂逃げ場が
ないために、ブロックの沈下に対して極めて大きな抗力
を生ずる。On the other hand, the sand and gravel of the soft ground layer that has entered the concave portion IC of the block of the present invention has no place to escape, as described above, and therefore produces an extremely large drag force against the sinking of the block.
しかし、凹陥部１の存在によって、ブロックの抗沈下性
を効果的に増大させるためには凹陥部１の面積がブロッ
ク上面５の面積の少なくとも０．５割以上あることが必
要であり、好ましくは１割以上更には２割以上であるも
のがよい。However, in order to effectively increase the anti-subsidence property of the block due to the presence of the recessed part 1, the area of the recessed part 1 needs to be at least 0.50% or more of the area of the upper surface 5 of the block, and preferably It is preferable that it is 10% or more, and even 20% or more.
凹陥部１は、代表的な態様としては、ブロック裏面の中
央に１偏設けら、れるが、第９図に示すように同心円状
に２個１ 、、１’設けたり、その他適宜の数設けられ
る。またその形状も、円錐状、角錐状、円錐台状、角錐
台状、円板状、角板状及び第９図に示すよ５４断面が三
角形の輪状その他例えば山脈状のものを複数並設さ・せ
たものなど任意に採用し得る。また、凹陥部１の高さも
特に制限されず、ブロックの強度、製造の容易性、コス
トなどを考慮して適宜法めればよいが、抗沈下性のうえ
からは、ある程度の高さを宵する方が望ましく例えばブ
ロックの厚さの５分の２以上の高さを有するように設計
するのも好ましい。また凹陥部１は、その周囲全域にわ
たって周壁が存在することは必ずしも必要でな−く、例
えば、四辺形板状のブロック下面に両端部に周壁のない
山脈状凹陥部１を複数並設したものでもよい。Typically, the concave portion 1 is provided one-sidedly in the center of the back surface of the block, but two concave portions 1, 1' may be provided concentrically as shown in FIG. 9, or any other suitable number may be provided. It will be done. The shape can also be a cone, a pyramid, a truncated cone, a truncated pyramid, a disc, a square plate, a ring with a triangular cross section as shown in Figure 9, or a mountain range, for example.・Can be arbitrarily adopted, such as those set. Furthermore, the height of the concave portion 1 is not particularly limited, and may be set as appropriate considering the strength of the block, ease of manufacture, cost, etc., but from the viewpoint of anti-settlement properties, it is recommended that the height be set to a certain level. For example, it is preferable to design the block so that the height thereof is two-fifths or more of the thickness of the block. Furthermore, the recess 1 does not necessarily need to have a peripheral wall over its entire periphery; for example, a plurality of mountain-shaped recesses 1 without peripheral walls at both ends may be arranged side by side on the lower surface of a quadrilateral plate-shaped block. But that's fine.
このように凹陥部１の態様としては種々のものが挙げら
れるが、いずれの態様においても凹陥部１の面積がブロ
ック上面５の面積の少なくとも０．５割以上あることが
必要である。ここで凹陥部１の面積とは、ブロック上面
と平行な面を凹陥部１の底部から頂部に至るまで平行移
動させなから凹陥部１を切断した場合の最大の凹陥部切
断面積を指称する。従って例えば１円錐。As described above, there are various forms of the recessed part 1, but in all the forms, it is necessary that the area of the recessed part 1 is at least 0.50% or more of the area of the block upper surface 5. Here, the area of the recess 1 refers to the maximum cutting area of the recess 1 when the recess 1 is cut without moving the plane parallel to the top surface of the block in parallel from the bottom to the top of the recess 1. So, for example, one cone.
台状の凹陥部においては、円錐台の底面に該当 ゛
する部分の面積が凹陥部１の面積である。また、凹陥部
１が複数個存在する場合は各々の凹陥部１の面積の総和
がブロック上面５の面積の０．５割以上あればよい。In a truncated concave portion, the area of the portion corresponding to the bottom surface of the truncated cone is the area of the concave portion 1. Further, when a plurality of recesses 1 are present, the total area of each recess 1 may be at least 0.50% of the area of the block top surface 5.
また、第１図及び第・：２図に示すように、凹陥部１に
は該凹陥部１か１らブロック上面５に連通ずる空気抜き
孔２が設けられるのが好ましい。Further, as shown in FIGS. 1 and 2, it is preferable that the recess 1 is provided with an air vent hole 2 that communicates with the upper surface 5 of the block.
一般に、ブロックを軟弱地盤層に敷設する場合に該凹陥
部１に軟弱地盤層の土砂礫が入り込むが、この際、同時
に空気も入り込み凹陥部頂部に滞留した空気は、ブロッ
ク（：負荷される荷重の変化によって圧縮されたり、凹
陥部外に漏洩する現象がみられ、ブロックの位置安定性
を損ない易い。空気抜き孔２は、このような空気の滞留
を防止し、ブロックの位置安定性を良好にするものであ
る。しかし空気抜き孔２の孔径が余り大きい場合は、凹
陥部１内の土砂礫等も該空気抜き孔２から漏出するため
、孔径は５０■以下好ましくは４０ｍ＋以下更には３０
四以下であるのがよい。Generally, when a block is laid on a soft ground layer, the soil and gravel of the soft ground layer enters the recess 1, but at this time, air also enters at the same time, and the air stagnant at the top of the recess is Due to changes in air, the block may be compressed or leak out of the concave portion, which tends to impair the positional stability of the block.The air vent hole 2 prevents such air from stagnation and improves the positional stability of the block. However, if the hole diameter of the air vent hole 2 is too large, the dirt and gravel in the recessed part 1 will also leak out from the air vent hole 2, so the hole diameter should be 50 mm or less, preferably 40 m+ or less, and even 30 mm or less.
It is better if it is 4 or less.
第３図及び第４図は本発明のブロックの別懇様であって
、第２図に相当する断面図である。いずれも軸脚のない
独楽形状を有し、第３図では円錐状、第４図では円錐台
状の凹陥部１が夫々、下面中実に設ゆられている。な□
お、本態様では空気抜き孔の存在しないものを示した。3 and 4 are cross-sectional views corresponding to FIG. 2, showing another aspect of the block of the present invention. Both have a top shape without a pivot leg, and a concave portion 1 in the shape of a cone in FIG. 3 and a truncated cone in FIG. 4 is provided in the middle of the lower surface. Na□
In this embodiment, an air vent hole is not present.
更に第５図〜第１１図に本発明のブロックめ別懇様を例
示した。なおこれら第５図−第１１図において（８：Ｊ
図は平面図％（ｂ１図は（ａ１図におけるＡ−Ａ’断面
図である。Furthermore, the block arrangement of the present invention is illustrated in FIGS. 5 to 11. In addition, in these figures 5 to 11 (8:J
The figure is a plan view (Figure b1 is a sectional view taken along line A-A' in Figure a1.
第５図に示すものは上面５の形状として四辺形の角部な
曲線で構成した態様である。上面形状を四辺形に近いも
のとすることにより、軟弱地盤層（二間隙少な（敷設し
得る利点がある。What is shown in FIG. 5 is an embodiment in which the shape of the upper surface 5 is formed by curved lines at the corners of a quadrilateral. By making the upper surface shape close to a quadrilateral, there is an advantage that it can be laid in a soft ground layer (with fewer gaps).
第６図に示すものは、円板部３とその下方にく逆円錐台
部４の上面の直径よりも大きい態様である。このように
構成することにより、円板部３の突出した周囲の下面に
軟弱地盤層からの上向きの応力が作用し、抗沈下性が増
大される。What is shown in FIG. 6 is an embodiment in which the diameter of the upper surface of the disk portion 3 and the inverted truncated conical portion 4 below it is larger. With this configuration, upward stress from the soft ground layer acts on the lower surface of the protruding periphery of the disc portion 3, increasing anti-subsidence properties.
第７図に示すものは、第６図に示す態様よりも扁平で空
気抜き孔のない態様である。The embodiment shown in FIG. 7 is flatter than the embodiment shown in FIG. 6 and has no air vent holes.
第８図に示すものは、上面５が四辺形状であって、四辺
形状板３の周囲が突出するとともに下面に四角錐台状の
凹陥部１が設けられている態様である。In the embodiment shown in FIG. 8, the upper surface 5 is quadrilateral, the periphery of the quadrilateral plate 3 protrudes, and the lower surface is provided with a concave portion 1 in the shape of a truncated quadrangular pyramid.
第９図に示τものは、円板部３の周囲が突出するととも
に、裏面に設けられる凹陥部として、中央部の円錐状の
凹陥部１以外にその周囲に同心円状Ｃ：斬面が三角形状
の輪状凹陥部１′が設けられ、夫々の凹陥部から上面５
に連通〒る空気抜き孔２が設けられている態様である。The one shown in FIG. 9 has a protruding periphery of the disc part 3, and a concave part provided on the back surface, in addition to the conical concave part 1 in the center, has a concentric circle C: the cutting surface is triangular. A ring-shaped recess 1' is provided, and an upper surface 5 is formed from each recess.
In this embodiment, an air vent hole 2 communicating with the air vent hole 2 is provided.
また、第１０図に示すものは、円錐台の上Ｃ二、小さい
円錐台が重ねられた外形を有し、下面に該小さい円錐台
よりも、やや大きめの円錐台状の凹陥部１が設けられて
いる態様である。このように構成することにより、保管
又は運搬の際には下段のブロックの上面を構成する小さ
い円遣台部に、上段の凹陥部を嵌合するようにして積み
重ねることにより、空間を有効利用することができる。Moreover, the one shown in FIG. 10 has an outer shape in which an upper truncated cone C2 and a smaller truncated cone are superimposed, and a truncated cone-shaped recess 1 that is slightly larger than the small truncated cone is provided on the lower surface. This is how it is done. With this configuration, when storing or transporting the blocks, the blocks can be stacked so that the upper recess fits into the small circular table that forms the upper surface of the lower block, making effective use of space. be able to.
更に第１１図に示すものは、四辺形状板の一側面Ｃ＝凸
状接続部が、該側面に対向する他側面に、該凸状接続部
と嵌合する凹状接続部が、夫々設けられ、且つ、裏Ｎ（
二円錐台状の凹陥部１が設けられた態様である。第１１
図においては一１凸状接続部として、−側面の下半部分
を一様（二突出させ、凹状接続部として、対向する側面
の下半部分を一様に窪ました例を示したが、これに限ら
ずその他適宜の態様が採用し得る。また、このような接
続部は、二側面のみならず、四側面ｇ：設けることもで
きる。このように接続部を設けることにより、軟弱地盤
層に敷設する場合に、隣接するブロックとの接続を良好
にし、ブロックが不等沈下下ることを防止し、多数のブ
ロック４＝よって形成される基盤の平面性を良好に確保
てることができる。Furthermore, in the one shown in FIG. 11, one side C of the quadrilateral plate has a convex connecting portion, and the other side opposite to this side is provided with a concave connecting portion that fits into the convex connecting portion, And the back N (
This is an embodiment in which a concave portion 1 in the shape of a biconical truncated cone is provided. 11th
In the figure, an example is shown in which the lower half of the − side is uniformly (2) protruded as a convex connecting portion, and the lower half of the opposing side is uniformly recessed as a concave connecting portion. Not limited to this, any other suitable form may be adopted.Furthermore, such a connection part can be provided not only on two sides but also on four sides.By providing a connection part in this way, the soft ground layer When laying the foundation, it is possible to improve the connection with adjacent blocks, prevent uneven settling of the blocks, and ensure good flatness of the base formed by the large number of blocks 4.
（発明の効果）
以上説明したように１本発明のブロックは軸脚がなく、
そのため従来頻繁にみられた軸脚の破損がなく、また軸
脚の突出部がないために、省空間で保管及び運搬ができ
、更に裏面に凹陥部が設けられているために杭沈下性が
大きく位置安定性が良好で地盤補強効果に優れていると
いう多くの効果利点を有するものである。(Effect of the invention) As explained above, the block of the present invention has no pivot leg,
As a result, there is no damage to the pivot leg, which was often seen in the past, and since there is no protruding part on the pivot leg, it can be stored and transported in a space-saving manner.Furthermore, the recessed part on the back surface prevents the pile from sinking. It has many effects and advantages, including great positional stability and excellent ground reinforcement effects.
第１図乃至第１１図は本発明の代表的態様を示す図面、
第１２図は従来の独楽形ブロックな示す図面である。
１は凹陥部、２は空気抜き孔、３警家板状部、４は逆錐
台部及び５は上面である。1 to 11 are drawings showing typical embodiments of the present invention,
FIG. 12 is a diagram showing a conventional top-shaped block. 1 is a concave portion, 2 is an air vent hole, 3 is a plate-like portion, 4 is an inverted truncated cone portion, and 5 is an upper surface.
Claims (7)
．５割以上の面積を有する凹陥部がブロック裏面に設け
られていることを特徴とする地盤補強用ブロック(1) has a substantially planar upper surface, and the area of the upper surface is 0
．． A block for ground reinforcement, characterized in that a recessed part having an area of 50% or more is provided on the back side of the block.
ている特許請求の範囲第１項記載のブロック(2) The block according to claim 1, which is provided with an air vent hole that communicates from the recessed portion to the upper surface.
の範囲第２項記載のブロック(3) The block according to claim 2, wherein the air vent hole has a hole diameter of 50 mm or less.
られている特許請求の範囲第１項記載のブロック(4) The block according to claim 1, which has a top shape without a pivot leg and has a concave portion in the center.
である特許請求の範囲第４項記載のブロック(5) The block according to claim 4, wherein the recessed portion is shaped like a truncated cone, a truncated pyramid, a cone, or a pyramid.
脚のない独楽形状の円板部の直径が該円板部の下方に続
く逆円錐台部の上面の直径よりも大きい特許請求の範囲
第４項記載のブロック(6) The diameter of the top-shaped disc part without a pivot, which is composed of a disc part and an inverted truncated cone part continuing below the disc part, is larger than the diameter of the upper surface of the inverted truncated cone part continuing below the disc part. Block described in claim 4
向する他側面に、該凸状接続部と嵌合する凹状接続部が
、夫々設けられ、且つ、裏面に円錐台状又は角錐台状の
凹陥部が設けられている特許請求の範囲第１項又は第２
項記載のブロック(7) A convex connecting portion is provided on one side of the quadrilateral plate, a concave connecting portion that fits into the convex connecting portion is provided on the other side opposite to the side, and a truncated conical portion is provided on the back surface. or claim 1 or 2, in which a truncated pyramid-shaped recess is provided.
Blocks described in section
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25993084A JPS61137911A (en) | 1984-12-11 | 1984-12-11 | Reinforcing block for ground |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25993084A JPS61137911A (en) | 1984-12-11 | 1984-12-11 | Reinforcing block for ground |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61137911A true JPS61137911A (en) | 1986-06-25 |
| JPH0461127B2 JPH0461127B2 (en) | 1992-09-30 |
Family
ID=17340900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25993084A Granted JPS61137911A (en) | 1984-12-11 | 1984-12-11 | Reinforcing block for ground |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61137911A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6688810B2 (en) * | 2002-06-11 | 2004-02-10 | Jan Erik Jansson | Revetment useful to line stream bed and assembly of said revetments |
| US6863472B2 (en) * | 2002-06-11 | 2005-03-08 | Jan Erik Jansson | Revetment useful to line stream bed and assembly of said revetments |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54919U (en) * | 1977-06-06 | 1979-01-06 |
-
1984
- 1984-12-11 JP JP25993084A patent/JPS61137911A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54919U (en) * | 1977-06-06 | 1979-01-06 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6688810B2 (en) * | 2002-06-11 | 2004-02-10 | Jan Erik Jansson | Revetment useful to line stream bed and assembly of said revetments |
| US6863472B2 (en) * | 2002-06-11 | 2005-03-08 | Jan Erik Jansson | Revetment useful to line stream bed and assembly of said revetments |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0461127B2 (en) | 1992-09-30 |
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