JP2683229B2 - Flexible connection structure of underdrain - Google Patents
Flexible connection structure of underdrainInfo
- Publication number
- JP2683229B2 JP2683229B2 JP18692895A JP18692895A JP2683229B2 JP 2683229 B2 JP2683229 B2 JP 2683229B2 JP 18692895 A JP18692895 A JP 18692895A JP 18692895 A JP18692895 A JP 18692895A JP 2683229 B2 JP2683229 B2 JP 2683229B2
- Authority
- JP
- Japan
- Prior art keywords
- underdrain
- steel rod
- flexible
- notch
- notches
- 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 - Lifetime
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Description
【０００１】[0001]
【発明の属する技術分野】この発明は隣接する暗渠間の
相対変位に追従可能とするための暗渠の可撓接合構造に
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flexible connection structure of an underdrain for making it possible to follow relative displacement between adjacent underdrains.
【０００２】[0002]
【発明が解決しようとする課題】軸方向に互いに連結さ
れて地中に敷設される暗渠の継手部は地盤の不同沈下な
どによる相対変位に追従自在な構造とする必要がある
が、従来の一般的な接合構造である、両暗渠の端面に止
水用のゴムを接着すると同時に、目地にモルタルを充填
する形式では、大きな、あるいは衝撃的な変位に対して
は止水性が損なわれる可能性がある。The joint portion of the underdrain connected to each other in the axial direction and laid in the ground needs to have a structure capable of following the relative displacement due to the uneven settlement of the ground. With a structure that adheres water-stopping rubber to the end faces of both underdrains, which is a typical joint structure, and at the same time, the joint is filled with mortar, the water-stoppage may be impaired against large or shock displacement. is there.
【０００３】この問題に対し、出願人は一暗渠を構成す
る２個のコンクリート部材を、伸縮可能で、可撓性のあ
る止水部材で接続し、大きな変位の吸収も可能とする構
造の暗渠を特開昭63−110327号その他で提案している。To address this problem, the Applicant has constructed a structure in which two concrete members forming one underdrain are connected by a stretchable and flexible water stop member so that a large displacement can be absorbed. Is proposed in JP-A-63-110327 and others.
【０００４】この可撓暗渠ならびに暗渠の接合端面に可
撓性のある止水部材を介在させて、その止水部材によ
り、隣接する暗渠間の相対変位を吸収する構造は相対変
位が余り大きくなく、止水部材の変形により暗渠間の相
対変位を吸収することができる間は非常に有効である。This flexible underdrain and a structure in which a flexible water stop member is interposed between the joint end faces of the underdrain and the relative water displacement member absorbs the relative displacement between the adjacent underdrain, the relative displacement is not so large. It is very effective while the deformation of the water blocking member can absorb the relative displacement between the underdrain.
【０００５】しかし、敷設された暗渠には短時間ではあ
るが衝撃的な強大な力が加わり、設計値以上の大きな相
対変位を生ずることが予想される。かかる相対変位が生
ずると、従来の接合構造では、相対変位を吸収すべき止
水部材が相対変位を吸収することができなくなって破損
し、暗渠としての機能が損なわれることになる。However, it is expected that a strong shocking force will be applied to the laid underdrain for a short time, but a large relative displacement exceeding the design value will occur. When such relative displacement occurs, in the conventional joint structure, the water blocking member that should absorb the relative displacement cannot absorb the relative displacement and is damaged, and the function as the underdrain is impaired.
【０００６】この発明はこの点に着目してなされたもの
で、暗渠間に設計値以上の大きな相対変位を生じた場合
でも、その相対変位による力を直接止水部材に伝えるこ
とを防止し、止水部材の破損を未然に防止する接合構造
を提案するものである。The present invention has been made by paying attention to this point, and even if a large relative displacement of a design value or more occurs between the underdrain, it is possible to prevent the force due to the relative displacement from being directly transmitted to the water blocking member, The joint structure is proposed to prevent damage to the water blocking member.
【０００７】[0007]
【課題を解決するための手段】この発明は、鋼棒を挿通
するために軸方向に穿孔され、端面から切欠部に至る挿
通孔を有する鉄筋コンクリート製暗渠を相互に接合する
接合構造であって、（Ａ）二個の暗渠の接合端面間に跨
って伸縮可能な可撓性止水部材を周回して取付けるとと
もに、（Ｂ）各暗渠の切欠部間に鋼棒を挿通し、切欠部
間距離が所定距離に維持されるよう切欠部間を連結し、
（Ｃ）連結後、一方の暗渠の切欠部には全体に、他方の
暗渠の切欠部には鋼棒端部収納部を残して残部に、硬化
性充填材を充填してなる暗渠の可撓接合構造である。SUMMARY OF THE INVENTION The present invention is a joint structure for mutually joining reinforced concrete underdrain pipes that are axially drilled to insert a steel rod and have insertion holes from an end face to a notch, (A) A flexible water stop member that extends and contracts over the joint end faces of the two underdrains is circulated and attached, and (B) a steel rod is inserted between the notches of each underdrain, and the distance between the notches. Connect the notches so that the
(C) After connection, the flexibility of the underdrain is obtained by filling the whole of the notch of the one underdrain with the steel rod end accommodating portion in the notch of the other underdrain and filling the rest with a curable filler. It is a junction structure.
【０００８】この発明は、鋼棒を挿通するために軸方向
に穿孔され、端面から切欠部に至る挿通孔を有する鉄筋
コンクリート製暗渠を相互に接合することが前提であ
り、二個の暗渠の接合端面間に跨って伸縮可能な可撓性
止水部材を周回して取付けることは従来と同じである
が、さらに、各暗渠の切欠部間に鋼棒を挿通し、切欠部
間距離が所定距離に維持されるよう切欠部間を連結し、
連結後、一方の暗渠の切欠部には全体に、他方の暗渠の
切欠部には鋼棒端部収納部を残して、残部に、硬化性充
填材を充填するものである。The present invention is based on the premise that the reinforced concrete underdrain, which is bored in the axial direction for inserting a steel rod and has an insertion hole extending from the end face to the notch, is joined to each other. Although it is the same as the conventional method to attach and extend a flexible water blocking member that can expand and contract across the end faces, a steel rod is inserted between the notches of each underdrain, and the distance between the notches is a predetermined distance. Connect the notches to maintain
After the connection, one of the underdrains is entirely filled with the steel rod end storage part in the notches of the other underdrain, and the rest is filled with the curable filler.
【０００９】この発明の要点は、上記（Ｂ）と（Ｃ）に
より、接合される両暗渠の切欠部間の距離を鋼棒によ
り、ある範囲に納まるように拘束し、その範囲内であれ
ば暗渠は相対変位可能であるが、その範囲をこえた相対
変位は起こし得ないように拘束した点である。このよう
に隣接する両暗渠の相対変位の上限は拘束されるので、
両暗渠を可撓的に接合している伸縮可能な可撓性止水部
材に予想外の力が負荷されることはなく、止水部材が破
損する恐れはない。The essential point of the present invention is that the distance between the notches of both underdrains to be joined is constrained by a steel rod so as to fall within a certain range according to the above (B) and (C). Relative displacement of the underdrain is possible, but the relative displacement beyond the range is constrained so that it cannot occur. In this way, the upper limit of the relative displacement of the two adjacent culverts is restricted,
Unexpected force is not applied to the stretchable flexible water blocking member that flexibly joins the two underdrains, and there is no risk of damage to the water blocking member.
【００１０】この発明の接合構造が採用される暗渠とし
ては次の２つに大別される。The underdrain in which the joining structure of the present invention is adopted is roughly classified into the following two types.
【００１１】（１）上記の前提条件を満足する形の長さ
の短い暗渠２個を可撓接合した形の１個の可撓暗渠を工
場で生産する場合。(1) In the case of manufacturing one flexible underdrain in a form in which two underdrains having a short length and satisfying the above-mentioned prerequisites are flexibly joined.
【００１２】（２）上記の前提条件を満足する通常の長
さの暗渠を現場で接合して可撓接合構造を形成する場
合。(2) In the case of forming a flexible joint structure by joining in-situ conduits of ordinary length satisfying the above preconditions on site.
【００１３】（１）の場合は、両暗渠端面間への止水部
材の埋設、切欠部の形成は可撓暗渠本体のコンクリート
の打設時に行なうが、鋼棒の挿通や連結（鋼棒端部収納
部の形成を含めて）は打設前や脱型後および設置後の何
れの時期に行っても良い。その時期は施工状況によって
決定される。In the case of (1), the water blocking member is buried between the both end faces of the underdrain, and the notch is formed at the time of placing concrete in the flexible underdrain body. (Including formation of the part storage part) may be performed at any time before placing, after removing from the mold, and after installing. The timing is determined by the construction situation.
【００１４】（２）の場合は、両暗渠端面間への止水部
材の取付け、鋼棒の挿通・連結、硬化性充填材の充填な
どは通常の暗渠の可撓的接合作業と同様に行われる。In the case of (2), attachment of a water blocking member between both end faces of the underdrain, insertion / connection of a steel rod, filling of a curable filler, etc. are carried out in the same manner as the usual flexible joining work of the underdrain. Be seen.
【００１５】[0015]
【発明の実施の形態】以下、図面を参照しながら、この
発明の実施の形態にづいて説明する。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.
【００１６】図１は工場生産による可撓暗渠を示し、
（ａ）は立面図、（ｂ）は軸方向に沿う縦断面図であ
る。FIG. 1 shows a factory-produced flexible underdrain,
(A) is an elevation view and (b) is a longitudinal sectional view along the axial direction.
【００１７】図２は現場施工による接合構造を示し、
（ａ）は暗渠の立面図、（ｂ）は接合部の軸方向に沿う
縦断面図である。FIG. 2 shows a joint structure constructed on site.
(A) is an elevation view of the underdrain, (b) is a longitudinal cross-sectional view along the axial direction of the joint.
【００１８】図３は両暗渠の切欠部間へ鋼棒を挿通し連
結した状態を示す詳細図であり、（ａ）は両暗渠が最も
接近した状態、（ｂ）は両暗渠が最も離れた状態を示
す。FIG. 3 is a detailed view showing a state in which steel rods are inserted and connected between the notches of both culverts. (A) is a state where both culverts are closest to each other, and (b) is a state where both culverts are farthest from each other. Indicates the status.
【００１９】まず、図１、図３を参照しながら、工場生
産による可撓暗渠の例について説明する。First, an example of a factory-produced flexible underdrain will be described with reference to FIGS.
【００２０】可撓暗渠１は長さの短い暗渠１ａと１ｂの
接合端面を伸縮可能な可撓性止水部材５で連結した形と
なっており、各暗渠１ａと１ｂの四隅部には軸方向に挿
通孔２が貫通して穿孔され、挿通孔２の中間部に切欠部
３が設けられている。一方の暗渠１ａの切欠部３はその
内部を区分して鋼棒端部収納部４を形成する筒状カバー
が取付けられている。そして、暗渠１ａの切欠部３と暗
渠１ｂの切欠部３との間には貫通孔２を通して鋼棒７が
挿通され、鋼棒７の両端のネジ部にはワッシャー９、ナ
ット８が取付けられている。この鋼棒７の両端へのナッ
ト８の締付け具合の調整により暗渠１ａの切欠部３と暗
渠１ｂの切欠部３との間隔を調整する。The flexible underdrain 1 has a shape in which the joint end surfaces of the short underdrain 1a and 1b are connected by a flexible water stop member 5 which can expand and contract, and shafts are provided at the four corners of each underdrain 1a and 1b. The insertion hole 2 is pierced and penetrated in the direction, and the notch 3 is provided in the middle portion of the insertion hole 2. The notch 3 of one underdrain 1a is attached with a tubular cover that divides the inside and forms a steel rod end housing 4. A steel rod 7 is inserted through the through hole 2 between the notch 3 of the underdrain 1a and the notch 3 of the underdrain 1b, and washers 9 and nuts 8 are attached to the threaded portions at both ends of the steel rod 7. There is. The gap between the notch 3 of the underdrain 1a and the notch 3 of the underdrain 1b is adjusted by adjusting the degree of tightening of the nut 8 on both ends of the steel rod 7.
【００２１】可撓暗渠１は鉄筋コンクリート製品として
工場生産される製品であるので、その生産時にコンクリ
ートの打設前に鉄筋の配筋や埋設金物の設置と合わせて
止水部材５の設置、切欠部３形成型枠の設置、貫通孔２
形成のシースの設置などを行った後コンクリートを打設
して可撓暗渠１本体を製造し、適切な時期に鋼棒７の挿
通、鋼棒７へのワッシャー９、ナット８の取付け、筒状
カバーの取付けを行って上記構造の可撓暗渠１が生産さ
れる。Since the flexible underdrain 1 is a product that is factory-manufactured as a reinforced concrete product, before the concrete is placed during the production, the water blocking member 5 and the cutout portion are installed together with the arrangement of the reinforcing bar and the buried metal object. 3 Forming form installation, through hole 2
After setting the formation sheath, etc., concrete is poured to manufacture the flexible underdrain 1 main body, the steel rod 7 is inserted at an appropriate time, the washer 9 and the nut 8 are attached to the steel rod 7, and the tubular shape is formed. The cover is attached to produce the flexible underdrain 1 having the above structure.
【００２２】なお、図１（ｂ）（図２（ｂ）も同様）に
は、暗渠１ａ、１ｂの挿通孔２が暗渠１ａ、１ｂを貫通
している例を示したが、暗渠１ａと１ｂとの接合に関与
しない側の挿通孔２は、その側に隣接して敷設する一般
暗渠との接合を鋼棒によって行う際に使用するものであ
るので、隣接して敷設する一般暗渠との接合を鋼棒によ
って行なわない場合には不要である。Although FIG. 1 (b) (similarly to FIG. 2 (b)) shows an example in which the insertion holes 2 of the underdrain 1a, 1b penetrate the underdrain 1a, 1b, the underdrain 1a and 1b. Since the insertion hole 2 on the side that is not involved in joining with is used when joining with a general underdrain that is laid adjacent to that side with a steel rod, it is joined with the general underdrain that is laid adjacently. It is not necessary if is not performed with a steel rod.
【００２３】鋼棒７の挿通、鋼棒７へのワッシャー９、
ナット８の取付け、鋼棒端部収納部４形成用に筒状カバ
ーの取付けなど鉄筋コンクリート製品としての可撓暗渠
１の製造後に行うことが可能な作業は製造後に行っても
よい。可撓暗渠１製造時には鋼棒７およびその両端のワ
ッシャー９、ナット８は図３（ａ）に示される位置にあ
り、この状態で暗渠１ａと１ｂの切欠部３に、暗渠１ａ
の筒状の鋼棒端部収納部４を除いて、硬化性充填材、例
えばモルタルを充填する。鋼棒７の一端は暗渠１ｂの切
欠部３に固定され、他端は暗渠１ａの切欠部３の鋼棒端
部収納部４に遊びを持った状態で収納されている。Insertion of the steel rod 7, washer 9 to the steel rod 7,
Operations that can be performed after manufacturing the flexible underdrain 1 as a reinforced concrete product, such as mounting the nut 8 and mounting a tubular cover for forming the steel rod end housing 4, may be performed after manufacturing. At the time of manufacturing the flexible underdrain 1, the steel rod 7 and the washers 9 and nuts 8 at both ends thereof are in the positions shown in FIG. 3 (a), and in this state, the underdrain 1a is placed in the notch 3 of the underdrain 1a and 1b.
With the exception of the cylindrical steel rod end housing 4, the curable filler, for example, mortar is filled. One end of the steel rod 7 is fixed to the cutout portion 3 of the underdrain 1b, and the other end is stored in the steel rod end storage portion 4 of the cutout portion 3 of the underdrain 1a with play.
【００２４】可撓暗渠１敷設後、可撓暗渠１に予想外の
大きな衝撃が加わり、暗渠１ａ、１ｂを引き離す方向に
大きな相対変位が生じようとしたと仮定する。図３
（ｂ）に示されるように、鋼棒端部収納部４に収納され
た鋼棒７の端部は切欠部３の端で停止し、それ以上に動
くことはできない。そのため、暗渠１ａと１ｂとは一定
限度以上には相対変位することはできない。After laying the flexible underdrain 1, it is assumed that an unexpected large impact is applied to the flexible underdrain 1 and a large relative displacement is about to occur in the direction of separating the underdrain 1a, 1b. FIG.
As shown in (b), the end of the steel rod 7 housed in the steel rod end housing 4 stops at the end of the notch 3 and cannot move any further. Therefore, the underdrain 1a and 1b cannot be relatively displaced beyond a certain limit.
【００２５】次に、図２、図３を参照しながら、現場施
工による可撓的接合構造の例について説明する。Next, with reference to FIGS. 2 and 3, an example of a flexible joint structure constructed in the field will be described.
【００２６】ここで使用される暗渠１は、通常の長さで
あり、四隅部に接合端面から切欠部３に至る挿通孔２を
有する暗渠であり、接合端部は伸縮可能な可撓性止水部
材５を確実かつ容易に取付けられように段差が設けら
れ、可撓性止水部材５取付部は平面および円弧面で構成
され、一方の暗渠１の接合端面には目地材としての弾性
体６が周回して取付けられている。The underdrain 1 used here has a normal length and is an underdrain having insertion holes 2 extending from the joint end face to the notch 3 at the four corners, and the joint end is a flexible flexible stretchable end. A step is provided so that the water member 5 can be securely and easily attached, and the flexible water blocking member 5 attachment portion is configured by a flat surface and an arc surface, and an elastic body as a joint material is formed on the joint end surface of one of the underdrain 1 6 is mounted around.
【００２７】上記構造の暗渠１、１を接合端面を当接し
て設置し、２個の暗渠１、１の内面に跨がって周回する
形で可撓性止水部材５を取付け、両暗渠１、１の切欠部
３間に鋼棒７を挿通孔２を通して挿通し、その両端にワ
ッシャー９、ナット８を取付ける。この鋼棒７の両端へ
のナット８の締付け具合の調整により暗渠１、１の切欠
部３相互間の間隔を調整する。一方の暗渠１の切欠部３
の内部に筒状の鋼棒端部収納部４を形成する筒状カバー
を取付ける。形成された筒状の鋼棒端部収納部４を除い
て、両暗渠１、１の切欠部３に硬化性充填材、例えばモ
ルタルを充填すると、図３（ａ）に示されるように、鋼
棒７の一端は一方の暗渠１の切欠部３の鋼棒端部収納部
４に遊びを持った状態で収納され、他端は他方の暗渠１
の切欠部３に固定される。The culverts 1 and 1 having the above-mentioned structure are installed so that the joint end faces thereof are in contact with each other, and the flexible water stop members 5 are attached so as to extend over the inner surfaces of the two culverts 1 and 1, and both the culverts are attached. A steel rod 7 is inserted through the insertion hole 2 between the notch portions 1 and 1, and washers 9 and nuts 8 are attached to both ends thereof. By adjusting the degree of tightening of the nut 8 on both ends of the steel rod 7, the interval between the cutouts 3 of the underdrain 1 and 1 is adjusted. Notch 3 of one underdrain 1
A tubular cover that forms the tubular steel rod end housing portion 4 is attached inside. Except for the formed cylindrical steel rod end accommodating portion 4, when the notch 3 of both underdrains 1 and 1 is filled with a curable filler, for example, mortar, as shown in FIG. One end of the rod 7 is accommodated in the steel rod end accommodating portion 4 of the notch 3 of the one underdrain 1 with some play, and the other end is the other underdrain 1
It is fixed to the notch 3 of the.
【００２８】暗渠１、１の接合後、予想外の大きな衝撃
が加わり、暗渠１、１を引き離す方向に大きな相対変位
が生じようとしたと仮定する。It is assumed that, after joining the underwater conduits 1 and 1, an unexpectedly large impact is applied to cause a large relative displacement in the direction in which the underwater conduits 1 and 1 are separated from each other.
【００２９】図３（ｂ）に示されるように、鋼棒端部収
納部４に収納された鋼棒７の端部は切欠部３の端で停止
し、それ以上に動くことはできない。そのため、暗渠
１、１は一定限度以上には相対変位することはできな
い。As shown in FIG. 3 (b), the end of the steel rod 7 accommodated in the steel rod end accommodating portion 4 stops at the end of the notch 3 and cannot move any further. Therefore, the culverts 1 and 1 cannot be relatively displaced beyond a certain limit.
【００３０】[0030]
【発明の効果】この発明は上記のように構成され、接合
される両暗渠の切欠部間の距離を鋼棒により、ある範囲
に納まるように拘束し、その範囲内であれば暗渠は相対
変位可能であるが、その範囲をこえた相対変位は起こし
得ないように拘束してあるので、予想外の大きな衝撃が
加わっても、拘束範囲を超えた相対変位を起こすことは
なく、止水部材が破損する恐れはない。EFFECTS OF THE INVENTION The present invention is constructed as described above, and the distance between the notches of both underdrain to be joined is restricted by a steel rod so as to be within a certain range, and within the range, the underdrain is relatively displaced. Although it is possible, relative displacement beyond that range is constrained so that it cannot occur, so even if an unexpectedly large impact is applied, relative displacement beyond the constrained range does not occur, and the water stop member There is no risk of damage.
【図１】工場生産による可撓暗渠を示し、（ａ）は立面
図、（ｂ）は軸方向に沿う縦断面図である。FIG. 1 shows a flexible underdrain produced by factory production, in which (a) is an elevation view and (b) is a longitudinal cross-sectional view taken along the axial direction.
【図２】現場施工による接合構造を示し、（ａ）は暗渠
の立面図、（ｂ）は接合部の軸方向に沿う縦断面図であ
る。2A and 2B are views showing a joint structure constructed on-site, where FIG. 2A is an elevation view of an underdrain, and FIG. 2B is a vertical cross-sectional view along the axial direction of the joint.
【図３】両暗渠の切欠部間へ鋼棒を挿通し連結した状態
を示す詳細図であり、（ａ）は両暗渠が最も接近した状
態、（ｂ）は両暗渠が最も離れた状態を示す。FIG. 3 is a detailed view showing a state in which steel rods are inserted and connected between the notches of both culverts, (a) showing a state where both culverts are closest to each other, and (b) showing a state where both culverts are farthest from each other. Show.
１，１ａ，１ｂ……暗渠、２……挿通孔、３……切欠
部、４……鋼棒端部収納部、５……可撓性止水部材、６
……弾性体、７……鋼棒、８……ナット、９……ワッシ
ャー。1, 1a, 1b ... Underdrain, 2 ... Insertion hole, 3 ... Notch, 4 ... Steel rod end storage, 5 ... Flexible water blocking member, 6
…… Elastic body, 7 …… Steel rod, 8 …… Nut, 9 …… Washer.
Claims (1)
れ、端面から切欠部に至る挿通孔を有する鉄筋コンクリ
ート製暗渠を相互に接合する接合構造であって、（Ａ）
二個の暗渠の接合端面間に跨って伸縮可能な可撓性止水
部材を周回して取付けるとともに、（Ｂ）各暗渠の切欠
部間に鋼棒を挿通し、切欠部間距離が所定距離に維持さ
れるよう切欠部間を連結し、（Ｃ）連結後、一方の暗渠
の切欠部には全体に、他方の暗渠の切欠部には鋼棒端部
収納部を残して残部に、硬化性充填材を充填してなる暗
渠の可撓接合構造。1. A joint structure for mutually joining reinforced concrete underdrains, each of which is axially drilled for inserting a steel rod and has an insertion hole extending from an end face to a cutout portion, comprising: (A)
A flexible water stop member that extends and contracts over the joint end faces of the two underdrains is circulated and attached, and (B) a steel rod is inserted between the notches of each underdrain, and the distance between the notches is a predetermined distance. The cutouts are connected to each other so as to be maintained at (C), and after the connection, the entire cutouts of the one underdrain and the remaining steel rod end storage parts are left in the cutouts of the other underdrain. Flexible joint structure of underdrain filled with flexible filler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18692895A JP2683229B2 (en) | 1995-07-24 | 1995-07-24 | Flexible connection structure of underdrain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18692895A JP2683229B2 (en) | 1995-07-24 | 1995-07-24 | Flexible connection structure of underdrain |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0932091A JPH0932091A (en) | 1997-02-04 |
| JP2683229B2 true JP2683229B2 (en) | 1997-11-26 |
Family
ID=16197173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18692895A Expired - Lifetime JP2683229B2 (en) | 1995-07-24 | 1995-07-24 | Flexible connection structure of underdrain |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2683229B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107869115B (en) * | 2017-11-20 | 2023-08-29 | 苏交科集团股份有限公司 | Multidirectional displacement adjusting device for precast concrete member and construction method |
-
1995
- 1995-07-24 JP JP18692895A patent/JP2683229B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0932091A (en) | 1997-02-04 |
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