JPH0352822Y2 - - Google Patents
Info
- Publication number
- JPH0352822Y2 JPH0352822Y2 JP1987082387U JP8238787U JPH0352822Y2 JP H0352822 Y2 JPH0352822 Y2 JP H0352822Y2 JP 1987082387 U JP1987082387 U JP 1987082387U JP 8238787 U JP8238787 U JP 8238787U JP H0352822 Y2 JPH0352822 Y2 JP H0352822Y2
- Authority
- JP
- Japan
- Prior art keywords
- retaining wall
- corner
- auxiliary
- bottom plate
- corner retaining
- 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
- 230000003014 reinforcing effect Effects 0.000 claims description 15
- 238000003466 welding Methods 0.000 claims description 4
- 230000002265 prevention Effects 0.000 claims 1
- 239000002689 soil Substances 0.000 description 7
- 239000002184 metal Substances 0.000 description 5
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000004570 mortar (masonry) Substances 0.000 description 4
- 241001070941 Castanea Species 0.000 description 2
- 235000014036 Castanea Nutrition 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
Landscapes
- Retaining Walls (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、切取り面や盛土面の崩壊を防止する
ための擁壁、特に、コーナー部に設置するコーナ
ー部擁壁の土圧による滑動を防止する構造に関す
るものである。[Detailed description of the invention] [Field of industrial application] The present invention is a retaining wall for preventing the collapse of a cut surface or an embankment surface, especially a corner retaining wall installed at a corner, which prevents sliding due to earth pressure. It is related to the structure to prevent this.
従来、この種擁壁として、第４図及び第５図に
示すようなものがある。すなわち、敷設する地面
に栗石等の基礎材Ａ、捨てコンクリートＢ及び敷
モルタルＣを順次積層し、その上にコーナー部擁
壁Ｄを設置すると共に、該コーナー部擁壁Ｄの左
右に標準型の直線部擁壁Ｅに連接した後、各擁壁
Ｄ，Ｅの直立版Ｆ，Ｇの正面側に根入れ深さの土
Ｈを盛り、直立版Ｆ，Ｇの背面側には、該直立版
Ｆ，Ｇの上端まで背面土Ｉを盛る構造のものであ
る。
Conventionally, there are retaining walls of this type as shown in FIGS. 4 and 5. That is, a foundation material A such as chestnut stone, concrete B, and mortar C are sequentially laminated on the ground to be laid, and a corner retaining wall D is installed on top of this, and standard type retaining walls are installed on the left and right sides of the corner retaining wall D. After connecting to the straight retaining wall E, the front side of the upright version F, G of each retaining wall D, E is filled with soil H to the depth of penetration, and the back side of the upright version F, G is filled with soil H. This is a structure in which soil I is piled up to the top of F and G.
しかし、このコーナー部擁壁Ｄは、図示するよ
うに、隣接する直立版Ｆが夫々水平土圧Ｐ１を受
けるため、その合力Ｐは直線部擁壁Ｅに対する土
圧Ｐ１より大きくなり、しかもコーナー部擁壁Ｄ
の底版Ｊの長さが直線部擁壁Ｅの底版Ｋの長さと
同じ長さでは滑動を起こす虞があつた。 However, as shown in the figure, in this corner retaining wall D, since the adjacent upright plates F each receive horizontal earth pressure P1, the resultant force P is greater than the earth pressure P1 against the straight retaining wall E, and moreover, the corner retaining wall D Retaining wall D
If the length of the bottom plate J was the same as the length of the bottom plate K of the straight section retaining wall E, there was a risk of sliding.
そこで、コーナー部擁壁Ｄが直線部擁壁Ｅと同
等に土圧に抵抗するには、コーナー部擁壁Ｄに、
その滑動抵抗力を高める手段を施す必要がある。 Therefore, in order for the corner retaining wall D to resist earth pressure to the same extent as the straight retaining wall E, the corner retaining wall D must:
It is necessary to take measures to increase the sliding resistance.
このような手段を施したものとして、第６図に
示す如き特開昭62−10335号公報の発明がある。 An invention using such means is disclosed in Japanese Unexamined Patent Publication No. 10335/1983 as shown in FIG.
これは、コーナー部擁壁Ａの底版Ｂに、メツシ
ユ板Ｃを土圧合力方向と反対側に連結して滑動抵
抗を大きくする方法である。 This is a method in which a mesh plate C is connected to the bottom plate B of the corner retaining wall A on the side opposite to the direction of the resultant earth pressure to increase the sliding resistance.
メツシユ板Ｃとしては、エキスバンド、パンチ
ングメタル等の金属板、プラスチツク、化学繊維
製ネツト等のメツシユ状のものを使用し、底版Ｂ
へは相互のピンＤをワイヤＥ等で結びつけて連結
する。そこで、メツシユ板Ｃは土との噛み合いを
強めると共に、底版Ｂに連結されているので、メ
ツシユ板Ｃに働く摩擦力により、一層コーナー部
擁壁Ａの滑動抵抗が高められる。 As the mesh plate C, use a mesh-like material such as an expanded band, a metal plate such as punching metal, plastic, or a net made of chemical fiber.
The pins D are connected to each other by connecting each other with a wire E or the like. Therefore, since the mesh plate C strengthens its engagement with the soil and is connected to the bottom plate B, the frictional force acting on the mesh plate C further increases the sliding resistance of the corner retaining wall A.
その他の従来例としては、第７図に示す如き実
開昭61−130653号公報の考案がある。即ち、コー
ナー部擁壁Ａの隣接する直線部擁壁Ｂの底版Ｃと
水平に係合するプレキヤスト製の補助版Ｄを、コ
ーナー部擁壁Ａの底版Ｅに連結したものである。 Another conventional example is a device disclosed in Japanese Utility Model Application Publication No. 130653/1983 as shown in FIG. That is, an auxiliary plate D made of precast, which horizontally engages with the bottom plate C of the adjacent linear retaining wall B of the corner retaining wall A, is connected to the bottom plate E of the corner retaining wall A.
また、第８図に示すように、コーナー部擁壁Ａ
の底版Ｂの土圧合力方向と反対側に開放された開
放面に、プレキヤスト製の補助版Ｃを水平に当接
して、底版Ｂと一体的に連結したものである（実
開昭61−135950号公報）。 In addition, as shown in Fig. 8, the corner retaining wall A
An auxiliary plate C made of precast is brought into horizontal contact with the open surface of the bottom plate B that is open on the side opposite to the direction of the resultant soil pressure, and is integrally connected to the bottom plate B (Utility Model No. 61-135950 Publication No.).
更に、第９図に示すように、コーナー部擁壁Ａ
の前壁Ｂの端部Ｃを結ぶ長さを有する補助版Ｄ
を、コーナー部擁壁Ａの底版Ｅにおいて、土圧方
向に対して鉛直に設置し、底版Ｅ及び前壁Ｂの端
部Ｃに一体的に取り付けたものである（実開昭61
−169155号公報）。 Furthermore, as shown in Fig. 9, the corner retaining wall A
An auxiliary plate D having a length connecting the end C of the front wall B of
is installed perpendicularly to the earth pressure direction on the bottom slab E of the corner retaining wall A, and is integrally attached to the bottom slab E and the end C of the front wall B (Utility Model 61).
−169155).
しかし、上記第６図に示すものは、コーナー部
擁壁Ａの底版Ｂに連結する部材であるメツシユ板
Ｃは変形し易いので、滑動には抵抗し得てもコー
ナー部擁壁Ａの滑動変形量は大きくなるという欠
点があり、第７図及び第８図に示すものは、プレ
キヤスト製の補助版を、予め打設されて硬化して
いる敷モルタルから浮き上がらないように取付け
ることは施工上困難であり、多少でも浮き上がる
と滑動抵抗力が小さくなるといつた問題点があ
る。
However, in the case shown in FIG. 6 above, the mesh plate C, which is a member connected to the bottom plate B of the corner retaining wall A, is easily deformed, so even though it can resist sliding, the corner retaining wall A is deformed by sliding. The disadvantage is that the amount is large, and in the case of the ones shown in Figures 7 and 8, it is difficult to install the precast auxiliary plate without lifting it from the mortar that has been cast and hardened in advance. Therefore, there is a problem in that if it lifts up even a little, the sliding resistance will decrease.
また、第９図に示すものは、構造が複雑である
とゝもに、重量が大となり運搬の点及び価格の点
で問題がある。 Furthermore, the one shown in FIG. 9 has a complicated structure and is heavy, causing problems in terms of transportation and cost.
本考案は、上記のような欠点を解決するため
に、成されたもので、コーナー部擁壁と、このコ
ーナー部擁壁に連結した補助擁壁との両底版部の
小口から突出する鉄筋に溶接又は結束等により鉄
筋を連結して組立て、該組立て鉄筋に現場打ちで
コンクリートを打設して上記両擁壁の底版と一体
の補助底版を形成することにより、摩擦抵抗を大
きくして確実に地滑りを防止するようにしたコー
ナー部擁壁構造を提供するものである。
The present invention was developed in order to solve the above-mentioned drawbacks, and it includes reinforcing bars protruding from the edges of both bottom slabs of the corner retaining wall and the auxiliary retaining wall connected to the corner retaining wall. By assembling reinforcing bars connected by welding or bundling, and pouring concrete on-site on the assembled reinforcing bars to form an auxiliary bottom slab that is integrated with the bottom slab of both retaining walls, frictional resistance can be increased and ensured. The present invention provides a corner retaining wall structure that prevents landslides.
以下、本考案を第１図乃至第３図に示す実施例
に基づいて詳細に説明する。なお、第１図は本考
案に係るコーナー部擁壁構造の斜視図で、第２図
は同擁壁の要部の横断断面図、第３図は同擁壁の
縦断面図を示す。
Hereinafter, the present invention will be explained in detail based on the embodiments shown in FIGS. 1 to 3. Note that FIG. 1 is a perspective view of a corner retaining wall structure according to the present invention, FIG. 2 is a cross-sectional view of a main part of the retaining wall, and FIG. 3 is a longitudinal cross-sectional view of the retaining wall.
上記図面において、１はコーナー部擁壁で、こ
のコーナー部擁壁１は直立版２，３と、両直立版
２，３に共通の底版４とから構成されており、該
底版４の頂角部は、直立版２，３，と平行にＬ型
形状に切除され、これによつて形成された小口５
からは内部に埋設された鉄筋６が突出している。 In the above drawing, 1 is a corner retaining wall, and this corner retaining wall 1 is composed of upright plates 2 and 3 and a bottom plate 4 common to both the upright plates 2 and 3, and the apex angle of the bottom plate 4 is The portion is cut out in an L-shape parallel to the upright plates 2, 3, and a small opening 5 is formed thereby.
A reinforcing bar 6 buried inside protrudes from the hole.
７は上記コーナー部擁壁１の左右に連結される
補助擁壁で、直立版８と底版９とから構成されて
おり、その底版９の長さは、コーナー部擁壁１の
底版４の長さと同一に設定されている。 Reference numeral 7 denotes auxiliary retaining walls connected to the left and right sides of the corner retaining wall 1, which is composed of an upright plate 8 and a bottom plate 9, and the length of the bottom plate 9 is equal to the length of the bottom plate 4 of the corner retaining wall 1. is set to be the same as the
また、上記コーナー部擁壁１の底版４におい
て、その左右の連結部には、ボルト１２の挿入孔
１３を有する金属製の連結板１４が埋設され、該
連結版１４には、コーナー部擁壁１に埋設された
鉄筋６の端部が溶着されている。更に、上記連結
板１４の後部にはボルト１２を出し入れするため
の空所凹部１５が形成されている。 Further, in the bottom plate 4 of the corner retaining wall 1, a metal connecting plate 14 having an insertion hole 13 for a bolt 12 is embedded in the left and right connecting parts, and the connecting plate 14 has a metal connecting plate 14 embedded therein. The ends of reinforcing bars 6 buried in 1 are welded. Furthermore, a hollow recess 15 is formed at the rear of the connecting plate 14 for inserting and removing the bolt 12.
一方、補助擁壁７の底版部９の小口１０からも
上記同様に、鉄筋１１が突出している とゝも
に、連結部にも、ボルト１２の挿入孔１６を有す
る金属製の連結板１７が埋設され、該連結版１７
には補助擁壁７に埋設された鉄筋１１の端部が溶
着されている。又、連結板１７の後部には、ボル
ト１２を出し入れするための空所凹部１８が形成
されている。尚、図示しないが、コーナー部擁壁
１と補助擁壁７の連結部には、何れか一方にボル
ト１２が螺合するナツトを埋設するようにしても
よい。 On the other hand, reinforcing bars 11 also protrude from the edges 10 of the bottom plate portion 9 of the auxiliary retaining wall 7, as described above.In addition, a metal connecting plate 17 having insertion holes 16 for bolts 12 is also provided at the connecting portion. Buried and the connected version 17
The ends of reinforcing bars 11 buried in the auxiliary retaining wall 7 are welded to the auxiliary retaining wall 7. Further, a hollow recess 18 is formed at the rear of the connecting plate 17 for inserting and removing the bolt 12. Although not shown, a nut into which the bolt 12 is screwed may be embedded in the connecting portion between the corner retaining wall 1 and the auxiliary retaining wall 7.
１９は標準型の直線部擁壁で、直立版２０と底
版２１とから構成されているが、この底版２１の
長さは、上記コーナー部擁壁１の底版４の長さよ
り短く設定されている。 Reference numeral 19 denotes a standard straight retaining wall, which is composed of an upright plate 20 and a bottom plate 21, and the length of this bottom plate 21 is set shorter than the length of the bottom plate 4 of the corner retaining wall 1. .
「実施例の作用」
そこで、先ず敷設する地面に、栗石等の基礎材
２２、捨てコンクリート２３、敷モルタル２４等
を順次積層し、やゝ硬化したその上にコーナー部
擁壁１を設置するとゝもに、該コーナー部擁壁１
の左右の連接部に補助擁壁７を接合し、連結板１
４の挿入孔１３に挿入したボルト１２を補助擁壁
７の連結板１７の挿入孔１６に挿入し、ボルト１
２にナツト２５を螺合してコーナー部擁擁壁１の
左右に補助擁壁７を連結固定する。また、補助擁
壁７の他方の連結部には標準型の直線部擁壁１９
を連結する。尚、図示しないが、コーナー部擁壁
１、補助擁壁７及び直線部擁壁１９の夫々の連結
手段は上記に限定されるものでなく、例えば夫々
の直立版及び底版に水平な貫通孔を明けておき、
コーナー部擁壁１、補助擁壁７又は及び直線部擁
壁１９の合致した貫通孔内に鋼棒を挿通し、該鋼
棒をその両端又は一端から締付けることにより一
体的に連結するようにしてもよい。``Operation of the embodiment'' Therefore, first, a foundation material 22 such as chestnut stone, concrete 23, paving mortar 24, etc. are sequentially laminated on the ground to be laid, and the corner retaining wall 1 is installed on top of the slightly hardened material. Also, the corner retaining wall 1
The auxiliary retaining wall 7 is joined to the left and right connecting parts of the connecting plate 1.
Insert the bolt 12 inserted into the insertion hole 13 of No. 4 into the insertion hole 16 of the connecting plate 17 of the auxiliary retaining wall 7, and then
2 are screwed together with nuts 25 to connect and fix the auxiliary retaining walls 7 on the left and right sides of the corner retaining wall 1. In addition, a standard linear retaining wall 19 is provided at the other connecting portion of the auxiliary retaining wall 7.
Concatenate. Although not shown, the means for connecting the corner retaining wall 1, the auxiliary retaining wall 7, and the straight retaining wall 19 are not limited to the above. Leave it early,
A steel rod is inserted into the corresponding through hole of the corner retaining wall 1, the auxiliary retaining wall 7, or the straight retaining wall 19, and the steel rod is tightened from both ends or one end thereof to be integrally connected. Good too.
次いで、コーナー部擁壁１の底版４及び補助擁
壁７の底版９の各小口５，１０から突出する鉄筋
６，１１に別部材である鉄筋を現場において溶接
又は結束等により連結して組み立て、該組み立て
鉄筋にコンクリート片２６を打設して底版４，９
と一体化の補助底版２７を形成する。なお、図示
において、補助底版２７は、左右の補助擁壁７の
底版９の端部を結ぶ範囲内の三角形状に形成した
が、これに限定されることなく、長方形状等でも
よいこと勿論である。 Next, reinforcing bars, which are separate members, are connected to the reinforcing bars 6 and 11 protruding from the respective edges 5 and 10 of the bottom slab 4 of the corner retaining wall 1 and the bottom slab 9 of the auxiliary retaining wall 7 by welding or bundling on site, and assemble them. Concrete pieces 26 are poured onto the assembled reinforcing bars, and the bottom plates 4 and 9 are installed.
An auxiliary bottom plate 27 is formed integrally with the base plate. In addition, in the illustration, the auxiliary bottom plate 27 is formed in a triangular shape within the range connecting the ends of the bottom plate 9 of the left and right auxiliary retaining walls 7, but is not limited to this, and may of course be rectangular or the like. be.
上記の作業が終了した後、各擁壁１，７，１９
の直立版２，３，８，２０の正面側には、根入れ
深さに土２８を盛り、該直立版２，３，８，２０
の背面側には、直立版２，３，８，２０の上端ま
で背面土２９を盛るのである。 After the above work is completed, each retaining wall 1, 7, 19
Fill the front side of the upright versions 2, 3, 8, 20 with soil 28 to the rooting depth.
Back soil 29 is piled up on the back side of the upright plates 2, 3, 8, and 20 up to the upper ends.
本考案は叙上のように、コーナー部擁壁１と、
このコーナー部擁壁１に連結した補助擁壁７の両
底版部４，９の小口５，１０から突出する鉄筋
６，１１に溶接又は結束等により鉄筋を連結して
組立て、該組立て鉄筋に現場打ちでコンクリート
２６を打設して上記両擁壁の底版４，９と一体の
補助底版２７を形成するようにしたものである。
As mentioned above, the present invention includes a corner retaining wall 1,
The reinforcing bars 6, 11 protruding from the edges 5, 10 of both bottom slabs 4, 9 of the auxiliary retaining wall 7 connected to the corner retaining wall 1 are assembled by being connected by welding or bundling, and the assembled reinforcing bars are attached on-site. Concrete 26 is cast by pouring to form an auxiliary bottom slab 27 that is integrated with the bottom slabs 4 and 9 of both retaining walls.
従つて、コーナー部擁壁１に作用する土圧は、
補助擁壁７によつて分散され、減少せしめられる
とゝもに、コーナー部擁壁１、補助擁壁７及び補
助底版２７に作用する摩擦力により、コーナー部
擁壁１の滑動抵抗が高められ、地滑りが確実に防
止される。特に、補助底版２７はその下面におい
て敷モルタル２４等と接着するため、滑動抵抗力
は一層増大するといつた相乗効果が得られる。 Therefore, the earth pressure acting on the corner retaining wall 1 is:
While being dispersed and reduced by the auxiliary retaining wall 7, the sliding resistance of the corner retaining wall 1 is increased due to the friction force acting on the corner retaining wall 1, the auxiliary retaining wall 7, and the auxiliary bottom plate 27. , landslides are reliably prevented. In particular, since the auxiliary bottom plate 27 is bonded to the mortar 24 and the like on its lower surface, a synergistic effect is obtained in which the sliding resistance is further increased.
また、従来のコーナー部擁壁１の形状には変更
を加えないので、全体の重量に変化がなく、製造
時の作業性も低下しないとゝもに、運搬も容易に
行えるし、施工時に大型の重機を必要とせず、従
来の場合と同様の施工が行なえるといつた諸効果
がある。 In addition, since no changes are made to the shape of the conventional corner retaining wall 1, there is no change in the overall weight, workability during manufacturing is not reduced, and it is easy to transport, and it is possible to It has various advantages such as not requiring heavy machinery and allowing construction to be carried out in the same way as in the conventional case.
第１図は本考案に係るコーナー部擁壁構造の斜
視図、第２図は同擁壁の要部を示す横断断面図、
第３図は同擁壁の縦断面図、第４図は従来のコー
ナー擁壁構造の斜視図、第５図は同擁壁の縦断面
図、第６図は他の従来例のコーナー部擁壁構造の
斜視図、第７図乃至第９図は更に他の従来例の異
なるコーナー部擁壁構造の斜視図である。
１……コーナー部擁壁、４，９……底版、５，
１０……小口、６，１１……鉄筋、７……補助擁
壁、１９……直線部擁壁、２６……コンクリー
ト、２７……補助底版。
FIG. 1 is a perspective view of a corner retaining wall structure according to the present invention, and FIG. 2 is a cross-sectional view showing the main parts of the retaining wall.
Fig. 3 is a vertical cross-sectional view of the same retaining wall, Fig. 4 is a perspective view of a conventional corner retaining wall structure, Fig. 5 is a longitudinal cross-sectional view of the same retaining wall, and Fig. 6 is a corner retaining structure of another conventional example. Perspective views of wall structures, FIGS. 7 to 9 are perspective views of other conventional corner retaining wall structures. 1... Corner retaining wall, 4, 9... Bottom plate, 5,
10... Edge, 6, 11... Rebar, 7... Auxiliary retaining wall, 19... Straight section retaining wall, 26... Concrete, 27... Auxiliary bottom plate.
Claims (1)
した補助擁壁の両底版部の小口から突出する鉄筋
に溶接又は結束等により鉄筋を連結して組立て、
該組立て鉄筋に現場打ちでコンクリートを打設し
て上記両擁壁の底版と一体の補助底版を形成する
ようにしたことを特徴とするコーナー部擁壁の滑
動防止構造。 The corner retaining wall and the auxiliary retaining wall connected to the corner retaining wall are assembled by connecting the reinforcing bars to the reinforcing bars protruding from the edges of both bottom plates by welding or bundling,
A slip prevention structure for a corner retaining wall, characterized in that an auxiliary bottom slab is formed integrally with the bottom slabs of both of the retaining walls by pouring concrete on-site on the assembled reinforcing bars.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987082387U JPH0352822Y2 (en) | 1987-05-29 | 1987-05-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987082387U JPH0352822Y2 (en) | 1987-05-29 | 1987-05-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63190339U JPS63190339U (en) | 1988-12-07 |
| JPH0352822Y2 true JPH0352822Y2 (en) | 1991-11-18 |
Family
ID=30934995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987082387U Expired JPH0352822Y2 (en) | 1987-05-29 | 1987-05-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0352822Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5114452B2 (en) * | 2009-05-20 | 2013-01-09 | 前田製品販売株式会社 | Retaining wall block |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4944735A (en) * | 1972-08-31 | 1974-04-27 | ||
| JPS6210335A (en) * | 1985-07-05 | 1987-01-19 | Haneda Concrete Kogyo Kk | Prevention of slide movement of corner retaining wall |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61130653U (en) * | 1985-01-31 | 1986-08-15 | ||
| JPH0434212Y2 (en) * | 1985-02-06 | 1992-08-14 | ||
| JPS61169155U (en) * | 1985-04-03 | 1986-10-20 |
-
1987
- 1987-05-29 JP JP1987082387U patent/JPH0352822Y2/ja not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4944735A (en) * | 1972-08-31 | 1974-04-27 | ||
| JPS6210335A (en) * | 1985-07-05 | 1987-01-19 | Haneda Concrete Kogyo Kk | Prevention of slide movement of corner retaining wall |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63190339U (en) | 1988-12-07 |
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