A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
FLOATATION STANDING TYPE TSUNAMI PROTECTION BREAKWATER
PROBLEM TO BE SOLVED: To provide a high strength and durable floatation standing type Tsunami protection breakwater, installed in a falling-down state in normal time, and capable of sufficiently supporting fluid force and hydraulic pressure by a Tsunami thereby, by having a waterproof box body of becoming a standing state by force and buoyancy of a large wave when a large Tsunami attacks.SOLUTION: A flotation standing type Tsunami protection breakwater comprises a foundation 2 installed underground, a floatation type waterproof box body 3 placed on the foundation 2 in a falling-down state and placed on the foundation 2 in a standing state by fluid force and buoyancy of seawater when the seawater arrives by the occurrence of a Tsunami, a cable 40 continuously arranged between the foundation 2 and the floatation type waterproof box body 3 by an external cable system, by setting a tip part of the floatation type waterproof box body 3 as the tension anchorage end 3a and also setting a bottom part of the foundation 2 as the fixing side anchorage end 2a, to be formed as a prestress concrete structure and cable deviating deviator parts D1 and D2 provided in the foundation 2 and the floatation type waterproof box body 3 for continuously maintaining a tension state of the cable 40 by both when placing the floatation type waterproof box body 3 on the foundation in a falling-down state or when placed in a standing state.
【課題】平常時には倒伏状態で設置され、大津波の襲来時に大きな波の力と浮力とによって起立した状態となる防波函体を持ち、これによって津波による流体力と水圧とを十分に支えることのできる高強度で耐久的な浮上起立式津波防波堤を提供する。【解決手段】地中に設置された基礎2と、基礎2の上に倒伏状態で載置され、津波の発生により海水が到来すると当該海水の流体力と浮力により基礎2の上に起立状態で載置される浮上式防波函体3と、プレストレストコンクリート構造とするため、浮上式防波函体3の先端部を緊張定着端3aとするとともに基礎2の底部を固定側定着端2aとして、外ケーブル方式により基礎2と浮上式防波函体3との間に連続配置されたケーブル40と浮上式防波函体3が基礎2の上に倒伏状態で載置されているとき、または起立状態で載置されているときの双方でケーブル40の緊張状態を連続して維持するために基礎2および浮上式防波函体3に設けられたケーブル偏向用のデビエータ部D1,D2とを備えるようにする。【選択図】図１
FLOATATION STANDING TYPE TSUNAMI PROTECTION BREAKWATER
PROBLEM TO BE SOLVED: To provide a high strength and durable floatation standing type Tsunami protection breakwater, installed in a falling-down state in normal time, and capable of sufficiently supporting fluid force and hydraulic pressure by a Tsunami thereby, by having a waterproof box body of becoming a standing state by force and buoyancy of a large wave when a large Tsunami attacks.SOLUTION: A flotation standing type Tsunami protection breakwater comprises a foundation 2 installed underground, a floatation type waterproof box body 3 placed on the foundation 2 in a falling-down state and placed on the foundation 2 in a standing state by fluid force and buoyancy of seawater when the seawater arrives by the occurrence of a Tsunami, a cable 40 continuously arranged between the foundation 2 and the floatation type waterproof box body 3 by an external cable system, by setting a tip part of the floatation type waterproof box body 3 as the tension anchorage end 3a and also setting a bottom part of the foundation 2 as the fixing side anchorage end 2a, to be formed as a prestress concrete structure and cable deviating deviator parts D1 and D2 provided in the foundation 2 and the floatation type waterproof box body 3 for continuously maintaining a tension state of the cable 40 by both when placing the floatation type waterproof box body 3 on the foundation in a falling-down state or when placed in a standing state.
【課題】平常時には倒伏状態で設置され、大津波の襲来時に大きな波の力と浮力とによって起立した状態となる防波函体を持ち、これによって津波による流体力と水圧とを十分に支えることのできる高強度で耐久的な浮上起立式津波防波堤を提供する。【解決手段】地中に設置された基礎2と、基礎2の上に倒伏状態で載置され、津波の発生により海水が到来すると当該海水の流体力と浮力により基礎2の上に起立状態で載置される浮上式防波函体3と、プレストレストコンクリート構造とするため、浮上式防波函体3の先端部を緊張定着端3aとするとともに基礎2の底部を固定側定着端2aとして、外ケーブル方式により基礎2と浮上式防波函体3との間に連続配置されたケーブル40と浮上式防波函体3が基礎2の上に倒伏状態で載置されているとき、または起立状態で載置されているときの双方でケーブル40の緊張状態を連続して維持するために基礎2および浮上式防波函体3に設けられたケーブル偏向用のデビエータ部D1,D2とを備えるようにする。【選択図】図１
FLOATATION STANDING TYPE TSUNAMI PROTECTION BREAKWATER
浮上起立式津波防波堤
IKEDA NAOHARU (author)
2015-11-02
Patent
Electronic Resource
Japanese
IPC:
E02B
HYDRAULIC ENGINEERING
,
Wasserbau
TSUNAMI PROTECTION BREAKWATER AND TSUNAMI ATTENUATION STRUCTURE
| European Patent Office | 2020
Stability of caisson-type breakwater foundation under tsunami-induced seepage
| British Library Online Contents | 2014
On the Tsunami Wave-Submerged Breakwater Interaction
| British Library Conference Proceedings | 2008