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1〜14 articles out of 14 articles

The Behavior of Dragged Anchors and Dragging Power Characteristics

Port and Airport Research Institute      018-04-03

December, 1979


Osamu KIYOMIYA,Takao FUJISAWA,Tatsuo WAKO

 The authors carried out a model test, by X-ray apparatus, to investigate the behavior of ship anchors dragging on the seabottom a...

Models for Predicting the Shoreline Evolution of Beaches Backed by Seawalls

Port and Airport Research Institute      018-04-02

December, 1979

Marine Diffusion Laboratory
Hiroaki OZASA,Alan H. BRAMPTON

This report describes a simple mathematical model of the changes in plan shape of a beach backed by a sea wall. The method include...

Consolidation Test Method of Very Soft Clays and Its Application

Port and Airport Research Institute      018-01-02

March, 1979


Yasufumi UMEHARA,Kouki ZEN

 The conventional oedometer test based on Terzaghi's one dimensional consolidation theory is not applicable to very soft c...

A Study on the Applicablity of III Class PC Slab for Airport Pavements

Port and Airport Research Institute      018-03-02

March, 1979

Runways Laboratory
Tsutomu FUKUTE,Katsuhisa SATO,Hideo YAMAZAKI

 In order to research the applicability of III class PC slab for airport pavements, a series of full scale loading tests on III cl...

A Review on Statistical Interpretation of Wave Data

Port and Airport Research Institute      018-01-01

March, 1979

Hydrodynamics Division
Yoshimi GODA

 Various aspects of wave statistics are reviewed on the basis of field observation reports mostly published in last several years....

Experiments on Wind Boundary-Layer and Skin Friction Coefficient Downstream of a Forward-Facing Step

Port and Airport Research Institute      018-03-01

March, 1979

Hydrodynamics Laboratory
Hajime KATO,Kiyoshi AMMA,Toshimitsu DOI

 In this report we describe the experiments on the wind boundary-layer and the skin friction coefficient downstream of a forward-f...

Observation of hydraulic phenomena in the surf zone at the Oh-arai Beach

Port and Airport Research Institute      018-02-02

March, 1979


Norio TNANAKA,Kazumasa KATOH,Kazuo NADAOKA,Hideo OSANAI,Takamichi KONDOH

 In this paper, characteristics of nearshore currents, waves, concentration of suspended sand, bottom topography, wave run-up and ...

A Method to Calculate Tsunami Forces on a Multi-cylinder Floating Body

Port and Airport Research Institute      018-02-01

March, 1979

Storm Surge and Tunami Laboratory
Koji KOBUNE,Shigeo TAKAHASHI,Katsutoshi TANIMOTO

 The tsunami forces acting on the floating body, the super structures of which is supported by many circular cylinders has not bee...

Rock Excavation by High Pressure Water Jets

Port and Airport Research Institute      018-01-05

March, 1979


Hideyuki SHOJI,Tadao NAKAJIMA

 This paper investigates cutting performance of high pressure water jets in air at pressures up to 4000kgf/cm2 and at flow rates u...

An Analysis of the Financial Conditions of Port Management Bodies

Port and Airport Research Institute      018-01-04

March, 1979


Michio YAJIMA,Matsuko NAKAMURA,Hajime INAMURA

 The purposes of this paper are,1) the analysis of the financial conditions of port management bodies in Japan using past six-year...

Analysis on Seismic Damage in Anchored Sheet-piling Bulkheads

Port and Airport Research Institute      018-01-03

March, 1979

Head of Structures Division
Shoichi KITAJIMA,Tatsuo UWABE

 Seismic damage in anchored sheet-piling bulkheads of 110, located in 22 ports, which were suffered strong earthquakes, is analyze...

Tidal Simulation on Tidal Marsh and Numerical Forecasting of its Topographic Deformation

Port and Airport Research Institute      018-04-01

March, 1979


Kazumasa KATOH,Norio TANAKA,Kazuo NADAOKA

 A numerical simulation model is developed to forecast the deformation of tidal marshes, which submerge at high water and emerge a...

The Financial Model of Port Management Body

Port and Airport Research Institute      018-03-04

March, 1979


Michio YAJIMA,Matsuko NAKAMURA

 It has been becoming more important to make a port and harbor planning in due consideration of the financial conditions of port m...

Entrance and Departure Manueverings and Trails of VLCC at the Deep Water Terminal (Report of Investigation at Kashima Crude Oil Tanker Berth)

Port and Airport Research Institute      018-03-03

March, 1979

Offshore Structures Laboratory
Shigeru UEDA,Katsuhiro YANAGISAWA

 Manueverings, trails, assistances of tug boats, turnings and ship motions are investigated at the deep water terminal and the fol...