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1〜16 articles out of 16 articles

Coupled Hydrodynamic Response Characteristics and Water Pressures of Large Composite Breakwaters

Port and Airport Research Institute      020-04-02

December, 1981


Tatsuo UWABE,Setsuo NODA,Tadaki CHIBA,Norihiro HIGAKI

 In order to prevent damages by tsunami a large composite breakwater is projected in deep sea of -60 m at the bay mouth of Kamaish...

Coupled Hydrodynamic Response Characteristics and Water Pressures of Large Composite Breakwaters

Port and Airport Research Institute      020-04-02

December, 1981


Tatsuo UWABE,Setsuo NODA,Tadaki CHIBA,Norihiro HIGAKI

In order to prevent damages by tsunami a large composite breakwater is projected in deep sea of -60 m at the bay mouth of Kamaishi...

Stress of Buried Pipe during Earthquakes Based on Two Dimensional Seismometer Array Observation

Port and Airport Research Institute      020-04-01

December, 1981

Head of Structures Division
Hajime TSUCHIDA,Ken-ichiro MINAMI,Osamu KIYOMIYA,Eiichi KURATA,Hideo NISHIZAWA

The stress caused in buried pipe by earthquake ground motion is mainly influenced by relative ground displacement along the pipeli...

Observation and Analysis of Earthquake Response of a Coupled Pile Offshore Platform

Port and Airport Research Institute      020-03-05

September, 1981

Offshore Structures Laboratory
Shigeru UEDA,Satoru SHIRAISHI

 Earthquake response records of a coupled pile offshore platform were obtained in Kashima Seaberth. Perhapps, there is no data obt...

Prediction of Differential Settlement with Special Reference to Variability of Soil Parameters

Port and Airport Research Institute      020-03-04

September, 1981

Head of Soils Division
Tatsuro OKUMURA,Takashi TSUCHIDA

Differential settlements often give great damage to structures on soft stratum. In the paper the authors develop a new method for ...

Experimental Study of Wind Waves Generated on Water Currents (3rd Report) -Wave Forecasting Method and its Experimental Confirmation-

Port and Airport Research Institute      020-03-03

September, 1981

Head of Marine hydrodynamics Division
Hajime KATO,Hiroichi TSURUYA,Hiroya TERAKAWA

In this report we propose a forecasting method of the waves generated on currents. This method is based on the concept of the equi...

Numerical Examination of the Measuring Technique of Wave Direction with the 'Covariance Method'

Port and Airport Research Institute      020-03-02

September, 1981

Head of Hydraulic Engineering Division
Yoshimi GODA

The estimation method of wave direction and angular spreading on the basis of covariances between the time series data of wave mot...

Analysis of Edge Waves by Means of Empirical Eigenfunctions

Port and Airport Research Institute      020-03-01

September, 1981


Kazumasa KATOH

This report shows the existence of the standing edge waves by analyzing the longshore variations of wave run-up fronts on the fore...

Field Observation of Local Sand Movements in the Surf Zone using Fluorescent Sand Tracer

Port and Airport Research Institute      020-02-03

June, 1981


Kazuo NADAOKA,Norio TANAKA,Kazumasa KATOH

 Fluorescent sand tracer was injected as a point source at the center of a circle having the diameter of 20 meters. After that, a ...

Studies On The Wear Of Slurry Pipelines -Evaluation On The Wear Resistance Of Polyurethane Elastmers-

Port and Airport Research Institute      020-02-07

June, 1981


Yoshikuni OKAYAMA,Yukitoshi MURAKAMI,Kenji HAMADA

This paper is derived from the wear tests by level rotaing drum on which steel and four kinds of polpurethane test pieces are moun...

A Study on the Cargo Flows in Port

Port and Airport Research Institute      020-02-06

June, 1981

Port Planing Laboratory
Toshikazu MIZOUCHI,Hajime INAMURA

A large quantity of cargo flow among wharfs in large and wide port, which make bad inflences not only upon the transportation effi...

Study on Berthing Impact Force of Very Large Crude Oil Carriers

Port and Airport Research Institute      020-02-05

June, 1981

Offshore Structures Laboratory
Shigeru UEDA

Design of Breasting Dolphin in dolphin type sea berths (deep water Terminal) for VLCC is ship's berthing impact force. As ...

Experimental Study on the Bending of Batter Piles due to Ground Settlement (2nd Report) -Field Experiment-

Port and Airport Research Institute      020-02-04

June, 1981


Kunio TAKAHASHI

In succession to the former model experiment, a field experiment of bending of prototype batter piles due to ground settlement wer...

A Hydraulic Experimental Study on Multi-celler Caisson Breakwaters

Port and Airport Research Institute      020-02-02

June, 1981

Breakwaters Laboratory
Katsutoshi TANIMOTO,Suketo HARANAKA,Eiji TOMIDA,Tsutomu MURANAGA,Satoshi SUZUMURA

 A new type of caisson with a high stability against violent wave attacks has been developed and is called as a multi-celler caiss...

Experimental Study of Impact Breaking Wave Forces on a Vertical-wall Caisson of Composite Breakwater

Port and Airport Research Institute      020-02-01

June, 1981

Breakwaters Laboratory
Katsutoshi TANIMOTO,Shigeo TAKAHASHI,Takao KITATANI

 The present paper points out on the basis of the experimental results for the typical example of slided caisson that careful at-t...

Liquefaction Resistance of Saturated Sands under A Partial Drainage Condition

Port and Airport Research Institute      020-01

March, 1981


Yasufumi UMEHARA,Kouki ZEN,Kouzi HAMADA

 A liquefaction test method is developed to evaluate liquefaction resistances under a partial drainage condition. The dynamic tria...