JP3984537B2 - Aquatic structure with water chamber - Google Patents

Aquatic structure with water chamber Download PDF

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Publication number
JP3984537B2
JP3984537B2 JP2002361571A JP2002361571A JP3984537B2 JP 3984537 B2 JP3984537 B2 JP 3984537B2 JP 2002361571 A JP2002361571 A JP 2002361571A JP 2002361571 A JP2002361571 A JP 2002361571A JP 3984537 B2 JP3984537 B2 JP 3984537B2
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water
wall body
upper transmission
rear wall
reserving chamber
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JP2004190403A (en
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光一 佐藤
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Nippon Steel Corp
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Nippon Steel Corp
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Description

【0001】
【発明の属する技術分野】
本発明は、港湾・漁港などの水域に設けられる遊水室を有する水域構造物の改良に関する。
【0002】
【従来の技術】
従来、港湾などの水域に設けられる水域構造物としては、特許文献1(特開平8−35219号公報)の図34に示すような杭式桟橋構造が広く知られている。この従来技術に係る杭式桟橋構造は、法線方向(構造物延長方向)および断面方向に5m程度の間隔で鋼管杭を打設し、これらの鋼管杭の頭部を鉄筋コンクリート製の梁で相互に連結し、梁間に床版を配置する構成である。
【0003】
従来の杭式桟橋構造の場合、反射波対策の面から次に示す課題があった。
(1)法線方向(構造物延長方向)における杭の設置間隔が5m前後と広いため、波がこの部分を通過するときの反射波高低減につながるエネルギー損失はほとんど生じない。
(2)杭式桟橋構造には、杭間から入射した波によって大きな揚圧力が作用するので、これに伴って杭に大きな引抜力が発生する。そのため、構造物の安定を確保するためには、杭長の長尺化、杭断面の大径化、杭本数の増加などの必要が生じることから、高コスト化および施工期間の長期化を招く場合があった。
(3)また、大きな揚圧力に対応するために、上部工における梁部材や床版部材を大断面化する必要も生じるため、高コスト化や、施工期間の長期化を招く場合があった。
【0004】
一方、本発明の出願人は、前記の特許文献1において上記課題の(1)に着目した遊水室を有する水域構造物を既に開示している。しかし、この遊水室を有する水域構造物は、消波効率の向上や、構造の簡素化などの点でなお改善の余地があるといえる。
【0005】
【特許文献1】
特開平8−35219号公報 図1,図34
【0006】
【発明が解決しようとする課題】
本発明は上記従来技術の欠点を除くためにされたものであり、その目的は杭間から入射した波の反射波高を低減させるとともに、構造物に作用する揚圧力を減少させて、構造物の安定と構造の簡素化を実現することである。
【0007】
【課題を解決するための手段】
(1)第1の発明は、少なくとも水底地盤の地盤面下の所定位置から水面下の所定位置まで部材長手方向に連続して継手を備えた多数の上部透過壁体構成部材が、前記継手が嵌合された状態で水底地盤に打設または非打設等の手段により配置されることで、上側に通水用スリットを有する上部透過壁体が構成され、かつ前記上部透過壁体構成部材の頭部は構造物延長方向連結材Aに連結され、前記上部透過壁体から所定距離だけ離れた位置において、後方壁体構成部材が水底地盤に打設または非打設等の手段により配置されて後方壁体が構成され、かつ前記後方壁体構成部材の頭部は構造物延長方向連結材Bに連結され、前記構造物延長方向連結材Aと前記構造物延長方向連結材Bとは断面方向連結材により連結されており、前記構造物延長方向連結材Aと前記断面方向連結材との交差部を含むように上方結合部A2が形成され、前記構造物延長方向連結材Bと前記断面方向連結材との交差部を含むように上方結合部B2が形成され、前記上部透過壁体と前記後方壁体との間に遊水室が形成され、前記上部透過壁体と前記後方壁体との間に中詰材が配置されて遊水室下部層が形成され、所定の前記上部透過壁体構成部材の継手の上部における非継手部に鞘管が外挿されて鞘管付き上部透過壁体構成部材が構成され、前記鞘管には斜材の下端部が連結され、前記斜材の上端部は上方結合部Bに連結され、前記鞘管と前記上部透過壁体構成部材の非継手部との間の空隙部には経時硬化性材料が充填されることで格点が形成されていることを特徴とする水域構造物である。
(2)第2の発明は、第1の発明において、上部透過壁体が、上部透過壁体構成部材と、数本おきに配設される部材軸方向荷重支持用壁体構成部材とから構成され、前記部材軸方向荷重支持用壁体構成部材は、前記鞘管付き上部透過壁体構成部材であり、その下端部が支持地盤まで到達していることを特徴とする。
(3)第3の発明は、第1または第2の発明において、後方壁体が、後方壁体構成部材と、数本おきに配設される部材軸方向荷重支持用壁体構成部材とから構成され、前記部材軸方向荷重支持用壁体構成部材は、前記鞘管付き上部透過壁体構成部材と対向する位置に配設され、その下端部が支持地盤まで到達していることを特徴とする。
(4)第4の発明は、第1から第3の発明において、前記斜材の側面に消波用突設体が設けられていることを特徴とする。
(5)第5の発明は、第1から第4の発明において、遊水室下部層の表面が水平面または斜面、あるいは水平面および斜面の組合せ等による任意の形状であることを特徴とする。
(6)第6の発明は、第5の発明において、遊水室下部層の表面に表面保護層が形成されていることを特徴とする。
(7)第7の発明は、第1から第6の発明において、断面方向連結材が鉄筋コンクリート製または鉄骨鉄筋コンクリート製であることを特徴とする。
(8)第8の発明は、第1から第6の発明において、断面方向連結材が、防食または非防食の形鋼または鋼管の鉄骨材であることを特徴とする。
(9)第9の発明は、第1から第8の発明において、後方壁体の背後に適宜高さまで裏込材が配置されていることを特徴とする。
(10)第10の発明は、第1から第9の発明において、後方壁体構成部材に、少なくとも水底地盤の地盤面下の所定位置から水面下の所定位置まで部材長手方向に連続して継手を備えた後方透過壁体構成部材を用いて、後方壁体を上側に通水用スリットを有する上部透過壁体としたことを特徴とする。
(11)第11の発明は、第1から第10の発明において、上部透過壁体構成部材および後方壁体構成部材が鋼管矢板であることを特徴とする。
(12)第12の発明は、第1から第9の発明において、後方壁体構成部材が鋼矢板であることを特徴とする。
(13)第13の発明は、第1及び第4から第12の発明において、上部透過壁体構成部材及び後方壁体構成部材が水底地盤上に配置されたコンクリートなどの経時硬化性材料からなる下方部支持体に支持されていることを特徴とする。
【0008】
【発明の実施の形態】
以下、本発明の第1実施形態の遊水室を有する水域構造物について、図1〜図7を参照しつつ説明する。第1実施形態の水域構造物1は、図中左側に構築された上部透過壁体2と、この上部透過壁体2の後方(図中右側)に所定間隔をおいて構築された後方壁体3とが上部工4で連結される。また、上部透過壁体2と後方壁体3の間には遊水室5が形成されている。
【0009】
第1実施形態の上部透過壁体2は、構造物延長方向に沿って水底地盤6に多数打設されている上部透過壁体構成部材7を相互に連結して構成されている。各上部透過壁体構成部材7は左右に継手が形成された鋼管矢板であって、上部透過壁体構成部材7の継手は、例えば、図5に示すように、T字状の雄継手8と嵌合溝付鋼製パイプの雌継手9とから構成されている。
【0010】
また各上部透過壁体構成部材7の継手は、上部透過壁体構成部材7を水底地盤6に打設した状態において、少なくとも水底地盤6の地盤面下の所定位置から水面10下の所定位置まで部材長手方向に連続するように配置されている。すなわち、上部透過壁体2では、水底地盤6の地盤面下の所定位置から水面10下の所定位置まで継手が噛み合って壁体を形成する一方で、水面10下の所定位置から上側には、上部透過壁体構成部材の間に通水用スリット11が形成されている。そして、上部透過壁体2の上端は、上部工4における構造物延長方向連結材A(30)に結合されている。
【0011】
ここで図2の例では、通水用スリット11はすべての上部透過壁体構成部材7の間に形成されているが、1つあるいは複数の継手毎に間隔をおいて設けてもよい。また通水用スリット11の部材軸方向の長さは一定である必要はなく、それぞれの上部透過壁体構成部材7の間で異なっていてもよい。さらに、通水用スリット11がその長手方向で断続的に設けられてもよい[ともに図示を省略する]。
【0012】
第1実施形態の後方壁体3は、構造物延長方向に沿って水底地盤6に多数打設されている後方壁体構成部材12を相互に連結して構成されている。第1実施形態の後方壁体構成部材12は、上部透過壁体構成部材7と同様に左右に継手が形成された鋼管矢板であって、水底地盤6の地盤面下の所定位置から上端部近傍まで部材長手方向に連続して継手が形成されている点で上部透過壁体構成部材7と相違する。すなわち、第1実施形態の後方壁体3では、少なくとも水底地盤6の地盤面下の所定位置から上側で継手が噛み合って不透過壁体が形成されている。そして、後方壁体3の上端部は、上部工4における構造物延長方向連結材B(31)に結合されている。
【0013】
また上部透過壁体2および後方壁体3を構成する鋼管矢板には、下端部が支持地盤13まで到達する長さに設定された部材軸方向荷重支持用壁体構成部材14が、数本おきに用いられている。そのため、上部透過壁体2および後方壁体3は、支持地盤13まで打設されている部材軸方向荷重支持用壁体構成部材14によって安定支持されている。
【0014】
さらに構造物延長方向連結材Aと構造物延長方向連結材Bとの間は、断面方向連結材15により連結されて上部工4が形成されている。第1実施形態では、構造物延長方向連結材Aおよび構造物延長方向連結材Bと、鉄筋コンクリート製で床版と一体化した断面方向連結材15とで上部工4が形成されている。そして、構造物延長方向連結材Aと断面方向連結材15との交差部に上方結合部A2(16)が形成され、構造物延長方向連結材Bと断面方向連結材15との交差部に上方結合部B2(17)が形成される。
【0015】
また上部透過壁体2と後方壁体3との間には所定高さまで土砂などの中詰材18が充填されており、上部透過壁体2と後方壁体3との間には中詰材18の上面を底面とした遊水室5が形成されている。この遊水室5には上部透過壁体2の通水用スリット11から海水が出入りする。そして、遊水室5の通水用スリット11から入射する波や、後方壁体3で反射される波にエネルギー損失が発生することから、反射波高を低減することができる。また同時に入射する波による揚圧力も減少することから、上部工4の構造も簡易化することが可能である。
【0016】
また上部透過壁体2における下方の壁部分と上方の通水用スリット11との比率を調整したり、遊水室5の幅(上部透過壁体2と後方壁体3との間隔)を変化させることにより、反射波低減効果をコントロールすることができる。さらに通水用スリット11の長さを個々に調整することで反射波低減効果のより細かいコントロールが可能となる。
【0017】
さらに遊水室5の底面(中詰材18の上面)には、表面保護層19が設けられている。なお、第1実施形態では表面保護層19を水平面としているが、斜面または水平面および斜面の組合せ等による任意の形状であってもよい[図示を省略する]。
【0018】
また上部透過壁体2および後方壁体3の間には、後方壁体側から上部透過壁体側に向けて斜め下向きに延長する斜材20が一定間隔毎に配置されており、構造体の水平方向の耐荷性能や変形性能が向上されている。斜材20の上端部は上方結合部B2(17)と一体化しており、斜材20の下端部は、上部透過壁体構成部材7に外挿された鞘管21の外周に連結されている。
【0019】
図6は、鞘管21と上部透過壁体構成部材7との接合部を示す図である。鞘管取付部に対応する上部透過壁体構成部材7の外周面と、鞘管21の内周面にはずれ止め用の突起22がそれぞれ固着されている。そして、鞘管21の底面部分には、上部透過壁体構成部材との空間の底を塞ぐようにシーリング23が配置される。そしてグラウト注入ホース等を介して、上部透過壁体構成部材7と鞘管21との空間に、モルタル等の経時硬化性材料24が充填されて一体化されることで、格点が形成されている。本発明では、斜材20の設置箇所数や鞘管の設置位置を調整することにより、水域構造物における水平方向の耐荷力や変形性能を調整することができる。
【0020】
また第1実施形態における斜材20の中間部には、消波効果の更なる向上を図るべく消波用突設体25が設けられている。図7(a)は筒状空洞を有する鉄筋コンクリート製消波用突設体26の構造例の横断面図であり、同図(b)は鋼管27および鋼板28を用いて断面略菱形状に形成された消波用突設体25の構造例の横断面図である。いずれの消波用突設体25も斜材20に外挿した後、斜材20と消波用突設体25との間にモルタル等の経時硬化性材料24を充填することで所定位置に固定される。また、鋼管27を用いずに、斜材20に直接、鋼板28を溶接により取り付けても良い。
【0021】
図8は第2実施形態の遊水室を有する水域構造物1aの側面図である。なお、以下の第2実施形態で第1実施形態と同一の構成には同一符号を付して重複説明を省略する。
【0022】
第2実施形態の水域構造物1aでは、後方壁体構成部材12の間に通水用スリット11が形成されており、後方壁体3が上部透過壁体である点で第1実施形態と相違する。また第2実施形態の上部工4は、構造物延長方向連結材Aと構造物延長方向連結材Bと鉄筋コンクリート製の断面方向連結材15のみで形成され、上部工4に床版を有しない構造である。
【0023】
また図9は第3実施形態の遊水室を有する水域構造物1bの側面図である。第3実施形態は、構造物延長方向連結材Aと構造物延長方向連結材Bとを連結する断面方向連結材15を鉄骨鉄筋コンクリート構造とした例である。
【0024】
また図10は第4実施形態の遊水室を有する水域構造物1cの側面図である。第4実施形態は、上部透過壁体構成部材7及び後方壁体構成部材12を水底地盤6上に配置されたコンクリートなどの経時硬化性材料からなる下方部支持体32で支持した例である。なお、図10(b)に示すように、第4実施形態の水域構造物については、水底地盤を掘り下げて経時硬化性材料を打設して、下方部支持体32を構築してもよい。
【0025】
以上、本発明を実施形態に基づいて説明してきたが、本発明の技術的範囲は上記の実施形態のみに限定されるものではない。例えば、後方壁体構成部材を鋼矢板で構成してもよく、また後方壁体の背後に適宜高さまで裏込材を配置するようにしてもよい[ともに図示を省略する]。
【0026】
【発明の効果】
本発明によれば、次の効果が得られる。
▲1▼上部透過壁体に形成されている通水用スリットから入射する波や、後方壁体で反射される波にエネルギー損失が生ずることから、反射波高(反射率)を低減することができる。
▲2▼同時に入射する波の揚圧力も減少することから、上部工の構造も簡易化することが可能である。
▲3▼上部透過壁体における下方の壁部分と上方の通水用スリットとの比率を調整したり、遊水室の幅(上部透過壁体と後方壁体との間隔)を変化させることにより、反射波低減効果をコントロールすることができる。さらに通水用スリットの部材軸方向の長さを個々に調整することで反射波低減効果のより細かいコントロールが可能となる。
▲4▼斜材の設置箇所数や鞘管の位置を調整することにより、水域構造物における水平方向の耐荷力や変形性能を調整することができる。
▲5▼斜材に消波用突設体を設けることにより、反射波低減効果を一層コントロールできる。
▲6▼鞘管(鞘管に連結する斜材も含む)を直接、上部透過壁体構成部材の継手の上方部の無継手部に嵌挿し配置するため、特許文献1にあるように鞘管(鞘管に連結する斜材も含む)嵌挿用の鋼管杭等を別途使用する必要がない。このため、構造が簡易化するとともに、経済性も向上し、工事期間も短縮することができる。
【図面の簡単な説明】
【図1】第1実施形態の遊水室を有する水域構造物の側面図である。
【図2】図1のA−A断面図である。
【図3】図1のB−B断面図である。
【図4】図1の平面図である。
【図5】壁体の継手構造の1例を示した図である。
【図6】鞘管と上部透過壁体構成部材との接合部を示す図である。
【図7】消波用突設体の構造例の横断面図である。
【図8】第2実施形態の遊水室を有する水域構造物の側面図である。
【図9】第3実施形態の遊水室を有する水域構造物の側面図である。
【図10】第4実施形態の遊水室を有する水域構造物の側面図である。
【符号の説明】
1,1a,1b,1c 水域構造物
2 上部透過壁体
3 後方壁体
4 上部工
5 遊水室
6 水底地盤
7 上部透過壁体構成部材
7a 継手
8 雄継手
9 雌継手
10 水面
11 通水用スリット
12 後方壁体構成部材
12a 継手
13 支持地盤
14 部材軸方向荷重支持用壁体構成部材
15 断面方向連結材
16 上方結合部A2
17 上方結合部B2
18 中詰材
19 表面保護層
20 斜材
21 鞘管
22 突起
23 シーリング
24 経時硬化性材料
25 消波用突設体
26 鉄筋コンクリート製消波用突設体
27 鋼管
28 鋼板
29 鋼製部材
30 構造物延長方向連結材A
31 構造物延長方向連結材B
32 下方部支持体
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement of a water body structure having a recreational water chamber provided in a water area such as a harbor or a fishing port.
[0002]
[Prior art]
Conventionally, a pile-type pier structure as shown in FIG. 34 of Patent Document 1 (Japanese Patent Application Laid-Open No. 8-35219) is widely known as a water structure provided in a water area such as a harbor. This pile-type pier structure according to this prior art is constructed by placing steel pipe piles at intervals of about 5 m in the normal direction (structure extension direction) and in the cross-sectional direction, and the heads of these steel pipe piles are mutually connected by reinforced concrete beams. The floor slab is arranged between the beams.
[0003]
In the case of the conventional pile-type pier structure, there were the following problems from the aspect of reflected wave countermeasures.
(1) Since the installation interval of piles in the normal direction (structure extension direction) is as wide as about 5 m, there is almost no energy loss that leads to reduced reflected wave height when the wave passes through this part.
(2) Since a large lifting pressure acts on the pile-type pier structure due to waves incident between the piles, a large pulling force is generated in the pile. Therefore, in order to ensure the stability of the structure, it is necessary to increase the length of the pile, increase the diameter of the cross section of the pile, increase the number of piles, etc., leading to higher cost and longer construction period. There was a case.
(3) In addition, in order to cope with a large lifting pressure, it is necessary to increase the cross-section of the beam member and floor slab member in the superstructure, which may increase the cost and prolong the construction period.
[0004]
On the other hand, the applicant of the present invention has already disclosed a water body structure having a water reserving chamber in which the above-mentioned problem (1) is noted in Patent Document 1. However, it can be said that the aquatic structure having the water reserving room still has room for improvement in terms of improvement of the wave-dissipating efficiency and simplification of the structure.
[0005]
[Patent Document 1]
Japanese Patent Laid-Open No. 8-35219 FIG. 1 and FIG.
[0006]
[Problems to be solved by the invention]
The present invention was made to eliminate the disadvantages of the prior art described above, and its purpose is to reduce the reflected wave height of waves incident from between the piles, and to reduce the lifting pressure acting on the structure, thereby reducing the structure. It is to realize stability and simplification of structure.
[0007]
[Means for Solving the Problems]
(1) In the first invention, a plurality of upper transmission wall body constituent members having joints continuously in a member longitudinal direction from a predetermined position below the ground surface of the water bottom ground to a predetermined position below the water surface, An upper transmission wall body having a water passage slit on the upper side is configured by being placed on the water bottom ground by means such as casting or non-casting in the fitted state, and the upper transmission wall body constituting member The head is connected to the structure extension direction connecting material A, and the rear wall constituting member is disposed on the water bottom ground by means such as placing or not placing at a position away from the upper transmission wall by a predetermined distance. A rear wall is configured, and a head of the rear wall member is connected to a structure extension direction connecting member B, and the structure extension direction connecting member A and the structure extension direction connecting member B are in a cross-sectional direction. Connected by connecting material, the structure extension An upper coupling portion A2 is formed so as to include an intersection portion between the direction coupling material A and the cross-sectional direction coupling material, and an upper coupling portion is included so as to include an intersection portion between the structure extension direction coupling material B and the cross-sectional direction coupling material. A portion B2 is formed, a water reserving chamber is formed between the upper permeation wall body and the rear wall body, and a filling material is disposed between the upper permeation wall body and the rear wall body, A layer is formed, and a sheath tube is extrapolated to a non-joint portion at an upper portion of a joint of the predetermined upper transmission wall member, thereby forming an upper transmission wall member with a sheath tube. The upper end of the diagonal member is connected to the upper joint B, and the space between the sheath tube and the non-joint part of the upper transmission wall member is made of a time-curable material. The water structure is characterized in that a rating is formed by filling.
(2) In the second invention, in the first invention, the upper transmission wall body is composed of an upper transmission wall body constituent member and wall axial constituent members for supporting an axial load of members arranged at intervals of several. In addition, the member axial load supporting wall constituting member is the upper transmission wall constituting member with a sheath tube, and a lower end portion thereof reaches the supporting ground.
(3) In a third aspect based on the first or second aspect, the rear wall body includes a rear wall body constituent member and a member axial direction load supporting wall body constituent member disposed every several. The member axial load supporting wall constituting member is arranged at a position facing the upper transmission wall constituting member with a sheath tube, and its lower end portion reaches the supporting ground. To do.
(4) The fourth invention is characterized in that, in the first to third inventions, a wave-dissipating projecting body is provided on a side surface of the diagonal member.
(5) The fifth invention is characterized in that, in the first to fourth inventions, the surface of the lower layer of the water reserving chamber has an arbitrary shape by a horizontal plane or a slope, or a combination of a horizontal plane and a slope.
(6) The sixth invention is characterized in that, in the fifth invention, a surface protective layer is formed on the surface of the lower layer of the water reserving chamber.
(7) The seventh invention is characterized in that, in the first to sixth inventions, the cross-sectional connecting material is made of reinforced concrete or steel reinforced concrete.
(8) An eighth invention is characterized in that, in the first to sixth inventions, the cross-section direction connecting member is a corrosion-resistant or non-corrosive shaped steel or a steel pipe steel tube.
(9) A ninth invention is characterized in that, in the first to eighth inventions, a backing material is disposed to a height as appropriate behind the rear wall.
(10) In a tenth aspect based on the first to ninth aspects, the rear wall body constituting member is a joint continuously in the longitudinal direction of the member from at least a predetermined position below the ground surface of the water bottom to a predetermined position below the water surface. The rear transmission wall member is provided as an upper transmission wall body having a water passage slit on the upper side.
(11) In an eleventh aspect based on the first to tenth aspects, the upper transmission wall member and the rear wall member are steel pipe sheet piles.
(12) In a twelfth aspect based on the first to ninth aspects, the rear wall constituting member is a steel sheet pile.
(13) In a thirteenth invention according to the first and fourth to twelfth inventions, the upper transmission wall member and the rear wall member are made of a time-curable material such as concrete in which the bottom wall member is disposed on the water bottom ground. It is supported by the lower part support body.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an aquatic structure having a water reservoir according to the first embodiment of the present invention will be described with reference to FIGS. The water body structure 1 according to the first embodiment includes an upper transmission wall body 2 constructed on the left side in the figure, and a rear wall body constructed at a predetermined interval behind the upper transmission wall body 2 (right side in the figure). 3 is connected by an upper work 4. Further, a water reserving chamber 5 is formed between the upper transmission wall 2 and the rear wall 3.
[0009]
The upper transmission wall body 2 of the first embodiment is configured by interconnecting a plurality of upper transmission wall body constituting members 7 that are placed in the bottom bottom ground 6 along the structure extending direction. Each upper transmission wall member 7 is a steel pipe sheet pile in which joints are formed on the left and right, and the joint of the upper transmission wall member 7 is, for example, as shown in FIG. It is comprised from the female joint 9 of the steel pipe with a fitting groove | channel.
[0010]
Further, the joint of each upper transmission wall member 7 is at least from a predetermined position below the ground surface of the water bottom ground 6 to a predetermined position below the water surface 10 in a state where the upper transmission wall member 7 is driven on the water bottom ground 6. It arrange | positions so that a member longitudinal direction may be followed. That is, in the upper transmission wall body 2, the joint meshes from a predetermined position below the ground surface of the water bottom ground 6 to a predetermined position below the water surface 10 to form a wall body, while on the upper side from a predetermined position below the water surface 10, A water passage slit 11 is formed between the upper transmission wall members. The upper end of the upper transmission wall 2 is coupled to the structure extension direction connecting member A (30) in the upper work 4.
[0011]
Here, in the example of FIG. 2, the water passage slits 11 are formed between all the upper transmission wall members 7, but may be provided at intervals for one or a plurality of joints. Further, the length of the water passage slit 11 in the member axial direction is not necessarily constant, and may be different among the respective upper transmission wall body constituting members 7. Furthermore, the slit 11 for water flow may be provided intermittently in the longitudinal direction [both are not shown].
[0012]
The rear wall body 3 of the first embodiment is configured by interconnecting a number of rear wall body structural members 12 that are placed on the water bottom ground 6 along the structure extension direction. The rear wall body constituting member 12 of the first embodiment is a steel pipe sheet pile in which joints are formed on the left and right in the same manner as the upper transmission wall body constituting member 7, and is near the upper end portion from a predetermined position below the ground surface of the water bottom ground 6. It differs from the upper transmission wall body structural member 7 in that the joint is formed continuously in the longitudinal direction of the member. That is, in the rear wall 3 of the first embodiment, the joint is engaged at least from a predetermined position below the ground surface of the bottom bottom ground 6 to form an impermeable wall. And the upper end part of the back wall 3 is couple | bonded with the structure extension direction connection material B (31) in the superstructure 4. As shown in FIG.
[0013]
The steel pipe sheet piles constituting the upper transmission wall body 2 and the rear wall body 3 are provided with several member axial direction load support wall body constituting members 14 whose length is set so that the lower end reaches the support ground 13. It is used for. Therefore, the upper transmission wall 2 and the rear wall 3 are stably supported by the member axial load supporting wall constituting member 14 that is placed up to the support ground 13.
[0014]
Further, the structure extension direction connecting member A and the structure extension direction connecting member B are connected by a cross-section connecting member 15 to form an upper work 4. In the first embodiment, the superstructure 4 is formed by the structure extension direction connection material A and the structure extension direction connection material B, and the cross-section direction connection material 15 made of reinforced concrete and integrated with the floor slab. An upper coupling portion A2 (16) is formed at the intersection between the structure extension direction connecting member A and the cross section direction connecting member 15, and above the intersection between the structure extension direction connecting member B and the cross section direction connecting member 15. A joint B2 (17) is formed.
[0015]
A filling material 18 such as earth and sand is filled between the upper transmission wall body 2 and the rear wall body 3 to a predetermined height, and an intermediate filling material is provided between the upper transmission wall body 2 and the rear wall body 3. A water reserving chamber 5 having a top surface of 18 as a bottom surface is formed. Seawater enters and exits the water reserving chamber 5 from the water passage slit 11 of the upper transmission wall 2. And since the energy loss generate | occur | produces in the wave which injects from the slit 11 for water flow of the water reserving room 5, and the wave reflected by the back wall 3, the reflected wave height can be reduced. Further, since the lifting pressure due to the incident wave is also reduced, the structure of the superstructure 4 can be simplified.
[0016]
Further, the ratio of the lower wall portion and the upper water passage slit 11 in the upper transmission wall body 2 is adjusted, and the width of the water reserving chamber 5 (the interval between the upper transmission wall body 2 and the rear wall body 3) is changed. Thus, the reflected wave reduction effect can be controlled. Further, by adjusting the length of the water passage slits 11 individually, finer control of the reflected wave reduction effect becomes possible.
[0017]
Furthermore, a surface protective layer 19 is provided on the bottom surface of the water reserving chamber 5 (the top surface of the filling material 18). In the first embodiment, the surface protective layer 19 is a horizontal plane, but may be an arbitrary shape such as a slope or a combination of a horizontal plane and a slope [not shown].
[0018]
Further, between the upper transmission wall body 2 and the rear wall body 3, diagonal members 20 extending obliquely downward from the rear wall body side toward the upper transmission wall body side are arranged at regular intervals, and the horizontal direction of the structure body The load-bearing performance and deformation performance are improved. The upper end portion of the diagonal member 20 is integrated with the upper coupling portion B <b> 2 (17), and the lower end portion of the diagonal member 20 is connected to the outer periphery of the sheath tube 21 that is extrapolated to the upper transmission wall body constituting member 7. .
[0019]
FIG. 6 is a view showing a joint portion between the sheath tube 21 and the upper transmission wall constituting member 7. On the outer peripheral surface of the upper transmission wall constituting member 7 corresponding to the sheath tube mounting portion and the inner peripheral surface of the sheath tube 21, a protrusion 22 for preventing slippage is fixed. And the sealing 23 is arrange | positioned in the bottom face part of the sheath pipe | tube 21 so that the bottom of the space with an upper permeation | transmission wall body structural member may be plugged up. Then, a space is formed by filling the space between the upper transmission wall body constituting member 7 and the sheath tube 21 with a curable material 24 such as mortar through a grout injection hose and the like, thereby forming a score. Yes. In the present invention, the horizontal load resistance and deformation performance of the water structure can be adjusted by adjusting the number of installation positions of the diagonal member 20 and the installation position of the sheath tube.
[0020]
Further, a wave-dissipating projecting body 25 is provided at an intermediate portion of the diagonal member 20 in the first embodiment in order to further improve the wave-dissipating effect. FIG. 7A is a transverse cross-sectional view of a structural example of a reinforced concrete wave-dissipating protruding body 26 having a cylindrical cavity, and FIG. 7B is formed using a steel pipe 27 and a steel plate 28 in a substantially rhombic cross section. It is a cross-sectional view of a structural example of the projecting body 25 for wave elimination. After any of the wave-dissipating protrusions 25 are extrapolated to the diagonal member 20, the time-curable material 24 such as mortar is filled between the diagonal member 20 and the wave-dissipating protrusions 25 to be in place. Fixed. Further, the steel plate 28 may be directly attached to the diagonal member 20 by welding without using the steel pipe 27.
[0021]
FIG. 8 is a side view of a water structure 1a having a water reserving chamber according to the second embodiment. Note that in the following second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and redundant description is omitted.
[0022]
The water body structure 1a of the second embodiment is different from the first embodiment in that a water passage slit 11 is formed between the rear wall members 12 and the rear wall 3 is an upper transmission wall. To do. Moreover, the superstructure 4 of 2nd Embodiment is formed only by the structure extension direction connection material A, the structure extension direction connection material B, and the cross-section direction connection material 15 made from reinforced concrete, and the superstructure 4 does not have a floor slab. It is.
[0023]
FIG. 9 is a side view of a water body structure 1b having a water reserving chamber according to the third embodiment. The third embodiment is an example in which the cross-sectional connection member 15 that connects the structure extension direction connection member A and the structure extension direction connection member B has a steel reinforced concrete structure.
[0024]
Moreover, FIG. 10 is a side view of the water body structure 1c having the water chamber of the fourth embodiment. The fourth embodiment is an example in which the upper transmission wall constituting member 7 and the rear wall constituting member 12 are supported by a lower portion support 32 made of a temporally curable material such as concrete disposed on the water bottom ground 6. In addition, as shown in FIG.10 (b), about the water body structure of 4th Embodiment, the bottom part support body 32 may be constructed | assembled by digging up a water bottom ground and setting up a time-hardening material.
[0025]
As mentioned above, although this invention has been demonstrated based on embodiment, the technical scope of this invention is not limited only to said embodiment. For example, the rear wall member may be formed of a steel sheet pile, and a backing material may be disposed to an appropriate height behind the rear wall [both are not shown].
[0026]
【The invention's effect】
According to the present invention, the following effects can be obtained.
(1) Since energy loss occurs in the wave incident from the slit for water passage formed in the upper transmission wall body and the wave reflected by the rear wall body, the reflected wave height (reflectance) can be reduced. .
(2) Since the lifting pressure of the wave incident at the same time is reduced, the structure of the superstructure can be simplified.
(3) By adjusting the ratio between the lower wall portion of the upper transmission wall body and the upper water passage slit, or by changing the width of the water reserving chamber (the distance between the upper transmission wall body and the rear wall body), The reflected wave reduction effect can be controlled. Further, by adjusting the length of the water passage slit in the member axial direction, finer control of the reflected wave reduction effect becomes possible.
(4) By adjusting the number of diagonal materials installed and the position of the sheath tube, the horizontal load bearing capacity and deformation performance of the water structure can be adjusted.
(5) The effect of reducing reflected waves can be further controlled by providing a wave-dissipating protrusion on the diagonal member.
(6) Since the sheath tube (including the diagonal member connected to the sheath tube) is directly inserted and placed in the joint-free portion above the joint of the upper transmission wall constituting member, the sheath tube is disclosed in Patent Document 1. There is no need to use a steel pipe pile for insertion (including diagonal members connected to the sheath pipe). For this reason, the structure is simplified, the economy is improved, and the construction period can be shortened.
[Brief description of the drawings]
FIG. 1 is a side view of a water body structure having a water reserving chamber according to a first embodiment.
FIG. 2 is a cross-sectional view taken along the line AA of FIG.
3 is a cross-sectional view taken along the line BB in FIG.
4 is a plan view of FIG. 1. FIG.
FIG. 5 is a view showing an example of a wall joint structure.
FIG. 6 is a view showing a joint portion between a sheath tube and an upper transmission wall member.
FIG. 7 is a cross-sectional view of a structural example of a wave-extinguishing projecting body.
FIG. 8 is a side view of a water structure having a water reserving chamber according to a second embodiment.
FIG. 9 is a side view of a water body structure having a water reserving chamber according to a third embodiment.
FIG. 10 is a side view of a water body structure having a water reserving chamber according to a fourth embodiment.
[Explanation of symbols]
1, 1a, 1b, 1c Water body structure 2 Upper permeation wall body 3 Rear wall body 4 Upper work 5 Reservoir chamber 6 Submarine ground 7 Upper permeation wall structural member 7a Joint 8 Male joint 9 Female joint 10 Water surface 11 Water passage slit 12 rear wall constituting member 12a joint 13 supporting ground 14 member axial load supporting wall constituting member 15 cross-section connecting member 16 upper joint A2
17 Upper coupling part B2
18 Filling material 19 Surface protective layer 20 Diagonal material 21 Sheath tube 22 Protrusion 23 Sealing 24 Temporarily hardened material 25 Protruding member 26 for wave breakage 27 Protruding member for wave breaking made of reinforced concrete 27 Steel tube 28 Steel plate 29 Steel member 30 Structure Extension direction connecting material A
31 Structure extension direction connecting material B
32 Lower support

Claims (13)

少なくとも水底地盤の地盤面下の所定位置から水面下の所定位置まで部材長手方向に連続して継手を備えた多数の上部透過壁体構成部材が、前記継手が嵌合された状態で水底地盤に打設または非打設等の手段により配置されることで、上側に通水用スリットを有する上部透過壁体が構成され、かつ前記上部透過壁体構成部材の頭部は構造物延長方向連結材Aに連結され、
前記上部透過壁体から所定距離だけ離れた位置において、後方壁体構成部材が水底地盤に打設または非打設等の手段により配置されて後方壁体が構成され、かつ前記後方壁体構成部材の頭部は構造物延長方向連結材Bに連結され、
前記構造物延長方向連結材Aと前記構造物延長方向連結材Bとは断面方向連結材により連結されており、前記構造物延長方向連結材Aと前記断面方向連結材との交差部を含むように上方結合部A2が形成され、前記構造物延長方向連結材Bと前記断面方向連結材との交差部を含むように上方結合部B2が形成され、前記上部透過壁体と前記後方壁体との間に遊水室が形成され、
前記上部透過壁体と前記後方壁体との間に中詰材が配置されて遊水室下部層が形成され、所定の前記上部透過壁体構成部材の継手の上部における非継手部に鞘管が外挿されて鞘管付き上部透過壁体構成部材が構成され、前記鞘管には斜材の下端部が連結され、前記斜材の上端部は上方結合部Bに連結され、前記鞘管と前記上部透過壁体構成部材の非継手部との間の空隙部には経時硬化性材料が充填されることで格点が形成されていることを特徴とする遊水室を有する水域構造物。
A large number of upper transmission wall body constituent members having joints continuously in the longitudinal direction of the member from a predetermined position below the ground surface of the water bottom ground to a predetermined position below the water surface are formed on the water bottom ground with the joints fitted. An upper transmission wall body having a water passage slit on the upper side is configured by being placed by means of placing or non-placement, and the head of the upper transmission wall body constituting member is a structure extension direction connecting member Connected to A,
The rear wall member is arranged at a position away from the upper transmission wall by a predetermined distance by means such as placing or non-casting on the bottom of the water, and the rear wall member is configured. Is connected to the structure extension direction connecting member B,
The structure extension direction connection material A and the structure extension direction connection material B are connected by a cross-sectional direction connection material, and include an intersection of the structure extension direction connection material A and the cross-section direction connection material. An upper coupling part A2 is formed, and an upper coupling part B2 is formed so as to include an intersection of the structure extension direction coupling member B and the cross-sectional direction coupling member, and the upper transmission wall body and the rear wall body A water chamber is formed between
An intermediate filling material is disposed between the upper transmission wall body and the rear wall body to form a lower water chamber lower layer, and a sheath pipe is provided at the non-joint portion at the upper part of the joint of the predetermined upper transmission wall member. An upper transmission wall member with a sheath tube is formed by extrapolation, and a lower end portion of an oblique member is connected to the sheath tube, and an upper end portion of the oblique member is connected to an upper coupling portion B, A water area structure having a water reserving chamber, characterized in that a gap is formed between the non-joint portion of the upper transmission wall constituting member and a time-hardening material is filled therein.
上部透過壁体が、上部透過壁体構成部材と、数本おきに配設される部材軸方向荷重支持用壁体構成部材とから構成され、前記部材軸方向荷重支持用壁体構成部材は、前記鞘管付き上部透過壁体構成部材であり、その下端部が支持地盤まで到達していることを特徴とする請求項1に記載の遊水室を有する水域構造物。The upper transmission wall body is composed of an upper transmission wall body structural member and a member axial load support wall body structural member disposed every several, and the member axial load support wall body structural member is: It is the said upper transmission wall body structural member with a sheath pipe, The lower end has reached the support ground, The water body structure which has a water reservoir of Claim 1 characterized by the above-mentioned. 後方壁体が、後方壁体構成部材と、数本おきに配設される部材軸方向荷重支持用壁体構成部材とから構成され、前記部材軸方向荷重支持用壁体構成部材は、前記鞘管付き上部透過壁体構成部材と対向する位置に配設され、その下端部が支持地盤まで到達していることを特徴とする請求項1または請求項2のいずれか1項に記載の遊水室を有する水域構造物。The rear wall body is composed of rear wall body constituting members and member axial load supporting wall body constituting members arranged at intervals of several, and the member axial load supporting wall body constituting member is the sheath. The water reserving chamber according to any one of claims 1 and 2, characterized in that it is disposed at a position facing the upper transparent wall constituting member with a pipe, and a lower end thereof reaches the support ground. A body of water structure. 前記斜材の側面に消波用突設体が設けられていることを特徴とする請求項1〜3のいずれか1項に記載の遊水室を有する水域構造物。  The water body structure having a water-reserving chamber according to any one of claims 1 to 3, wherein a wave-dissipating protruding body is provided on a side surface of the diagonal member. 遊水室下部層の表面が水平面または斜面、あるいは水平面および斜面の組合せ等による任意の形状であることを特徴とする請求項1から請求項4のいずれか1項に記載の遊水室を有する水域構造物。  5. The water area structure having a water reserving chamber according to claim 1, wherein the surface of the lower layer of the water reserving chamber has a horizontal plane or a slope, or an arbitrary shape by a combination of a horizontal plane and a slope, or the like. object. 遊水室下部層の表面に表面保護層が形成されていることを特徴とする請求項5に記載の遊水室を有する水域構造物。  6. The water area structure having a water reserving chamber according to claim 5, wherein a surface protective layer is formed on a surface of the water reserving chamber lower layer. 断面方向連結材が鉄筋コンクリート製または鉄骨鉄筋コンクリート製であることを特徴とする請求項1から請求項6のいずれか1項に記載の遊水室を有する水域構造物。  The cross-sectional connecting material is made of reinforced concrete or steel-framed reinforced concrete, and the water area structure having a water reserving chamber according to any one of claims 1 to 6. 断面方向連結材が、防食または非防食の形鋼または鋼管の鉄骨材であることを特徴とする請求項1から請求項6のいずれか1項に記載の遊水室を有する水域構造物。  7. The water structure having a water-reserving chamber according to claim 1, wherein the cross-sectional connecting member is a corrosion-resistant or non-corrosive shaped steel or a steel pipe steel tube. 後方壁体の背後に適宜高さまで裏込材が配置されていることを特徴とする請求項1から請求項8のいずれか1項に記載の遊水室を有する水域構造物。  The water structure having a water-reserving chamber according to any one of claims 1 to 8, wherein a backing material is disposed up to a suitable height behind the rear wall. 後方壁体構成部材に、少なくとも水底地盤の地盤面下の所定位置から水面下の所定位置まで部材長手方向に連続して継手を備えた後方透過壁体構成部材を用いて、後方壁体を上側に通水用スリットを有する上部透過壁体としたことを特徴とする請求項1から請求項9のいずれか1項に記載の遊水室を有する水域構造物。  Using the rear transmission wall member having a joint continuously in the longitudinal direction of the member from at least a predetermined position below the ground surface of the water bottom ground to a predetermined position below the water surface as the rear wall member. The water body structure having a water reserving chamber according to any one of claims 1 to 9, wherein the upper permeating wall body has a water passage slit. 上部透過壁体構成部材および後方壁体構成部材が鋼管矢板であることを特徴とする請求項1から請求項10のいずれか1項に記載の遊水室を有する水域構造物。  The upper permeable wall body constituting member and the rear wall body constituting member are steel pipe sheet piles, and the water area structure having a water-reserving chamber according to any one of claims 1 to 10. 後方壁体構成部材が鋼矢板であることを特徴とする請求項1から請求項9のいずれか1項に記載の遊水室を有する水域構造物。  The water body structure having a water-reserving chamber according to any one of claims 1 to 9, wherein the rear wall member is a steel sheet pile. 上部透過壁体構成部材及び後方壁体構成部材が水底地盤上に配置されたコンクリートなどの経時硬化性材料からなる下方部支持体に支持されていることを特徴とする請求項1及び請求項4から12のいずれか1項に記載の遊水室を有する水域構造物。  The upper transmission wall member and the rear wall member are supported by a lower part support member made of a time-curable material such as concrete disposed on the water bottom ground. The water body structure which has a reclaimed water chamber of any one of 1-12.
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