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Featured researches published by Naoto Takehana.


PROCEEDINGS OF CIVIL ENGINEERING IN THE OCEAN | 2002

AN EXPERIMENTAL STUDY ON EFFECTS OF MOUND ON HYDRAULIC CHARACTERISTICS OF THE FLARING SHAPED SEAWALL

Yasuo Ichikawa; Yasuto Kataoka; Takeo Sakakibara; Naoto Takehana; Isao Irie; Keisuke Murakami

A Flaring Shaped Seawall (FSS), a new type of one, can drastically reduce a crest height and wave overtopping quantity in comparison with a conventional upright one. The FSS will usually be set on a mound from the point of a cost of manufacturing and construction. Thus, in this paper, effects of the mound on hydraulic characteristics of the FSS (a wave overtopping rate, a wave run-up height and a reflection coefficient) are clarified from experiments using a two-dimensional flume. Furthermore a method for the FSS on the mound is proposed, and it is shown that the method is adequate under the condition of experiments in this paper.


The Thirteenth International Offshore and Polar Engineering Conference | 2003

Reduction of Wave Overtopping And Water Spray With Using Flaring Shaped Seawall

Yuji Kamikubo; Keisuke Murakami; Isao Irie; Yasuto Kataoka; Naoto Takehana


Archive | 2001

Breakwater structure and method for constructing the same

Yoshihiro Hamazaki; Yoji Hanawa; Fujihiko Hashino; Yasuo Ichikawa; Yasuto Kataoka; Osamu Kiyomiya; Naoto Takehana; 洋二 塙; 靖生 市川; 藤彦 橋野; 理 清宮; 義弘 濱崎; 保人 片岡; 直人 竹鼻


Journal of Japan Society of Civil Engineers | 2016

WAVE OVERTOPPING AND SPLASH GENERATED AT FLARED SHAPE SEAWALL UNDER STORM

Keisuke Murakami; Naoya Sugimoto; Masamune Endo; Daisuke Maki; Naoto Takehana


Journal of Japan Society of Civil Engineers | 2016

WAVE REDUCTION EFFECT OF AN ARTIFICIAL REEF COMBINED WITH FLARING-SHAPED BLOCK

Takao Ota; Yoshiharu Matsumi; Naoto Takehana; Keisuke Murakami


Journal of Japan Society of Civil Engineers | 2016

CHARACTERISTICS OF WAVE PRESSURE ON FLARED SHALE SEAWALL UNDER OBLIQUE INCIDENT WAVES

Keisuke Murakami; Ryoya Suyama; Ryota Kuroeda; Daisuke Maki; Naoto Takehana


Journal of Japan Society of Civil Engineers | 2014

COUNTERMEASURES OF REDUCEING WAVE OVERTOPPING AT JOINT CORNER BETWEEN UPRIGHT SEAWALL AND FLARE SHAPED SEAWALL

Keisuke Murakami; Daisuke Maki; Naoto Takehana; Naoya Sugimoto; Ryoya Suyama


Journal of Japan Society of Civil Engineers | 2013

EFFECT OF RETREATED PARAPET WITH FLARED CROSS SECTION ON REDUCING WAVE OVERTOPPING

Keisuke Murakami; Shoichiro Kitamura; Daisuke Maki; Naoto Takehana; Kyohei Iwata


Journal of Japan Society of Civil Engineers | 2012

NUMERICAL ANALYSES OF HYDRAULIC CHARACTERISTICS FOR TSUNAMI OF THE FLARING SHAPED SEAWALL

Naoto Takehana; Kei Ogino; Yasuto Kataoka; Hirokazu Matsuoka


Journal of Japan Society of Civil Engineers | 2012

Wave Overtopping and Coefficient of Equivalent Crown Height on Flaring Shaped Seawall against Oblique Incident Waves

Keisuke Murakami; Daisuke Maki; Naoto Takehana

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