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1〜15 articles out of 15 articles

Digital Computation on the Effect of Breakwaters Against Long-period Waves (2nd Report)

Port and Airport Research Institute      003-07

December, 1964

Breakwaters Laboratory
Yoshiyuki ITO,Shosuke TOKI,Michio MORIHIRA

 The effect of breakwaters against long-period waves, such as tsunami, is investigated in this report by numerical computation and...

Studies on Underwater Excavations with a Submerged Jet

Port and Airport Research Institute      003-05

December, 1964


Jin MATSUDA,Hisao IWATA

 A submerged jet can be utilized to excavate the sea bottom obtain a large quantity of sand buried under the bottom. Experiments h...

Basic Study on intrusion Mortar

Port and Airport Research Institute      003-06

November, 1964


Yuzo AKATSUKA

 Reported herein are the results of study on properties of intrusion mortar for prepacked concrete and on relationships between pr...

Studies on Performance of Compulsory and Conventional Mixers and on Test of Mixer Performance

Port and Airport Research Institute      003-04

August, 1964


Yuzo AKATSUKA

 The performance of compulsory and conventional mixers were studied as well as test methods of mixer performance as designated in ...

Study on the Jet-apparatus for dredging (1st Report)

Port and Airport Research Institute      003-03

August, 1964


Hisao IWATA

 The present report is the first of a research series in which the author intends to investigate the phenomena of flows in the jet...

The Generation of Water Waves with a Vertically Oscillating Flow at a Channel Bottom

Port and Airport Research Institute      000-09

August, 1964

Hydraulic Model Test Section
Yoshimi GODA,Tooru KIKUYA

 A regular train of water waves can be generated with a vertically oscillating flow at a channel bottom. The solution of velocity ...

Wave Forces on a Vertical Circular Cylinder: Experiments and a Proposed Method of Wave Force Computation

Port and Airport Research Institute      000-08

August, 1964

Hydraulic Model Test Section
Yoshimi GODA

 The analysis of the wave forces acting on piles is very important for the design of offshore structures such as oil-drilling plat...

A Model Experiment on the Effects of Jetties constructed in a Waterway with uniform Width.

Port and Airport Research Institute      003-02-02

June, 1964


Tadanori ASADA,Tsuyoshi HOSOKAWA

This paper describes the effects of jetties constructed symmetrically on both banks of a flume with uniform width, which is relate...

A Model Experiment on the Tsunami Brekwaters at the port of Kochi

Port and Airport Research Institute      003-02-01

June, 1964


Akihiko SHIBAYAMA,Hisao KUMURA,Kanji TAKEMURA

 This experiment was conducted to study the engineering method for the prevention of casualties due to Tsunamis for the change of ...

A Note on Ursell's Parameter for long waves

Port and Airport Research Institute      000-07

May, 1964

Hydraulic Model Test Section
Takao HORIGUCHI

A critical parameter η0λ2/h3 for long waves was introduced by Ursell in 1953. his course of discussion was developed by the genera...

On the f-5 Law of wind-Generated Waves

Port and Airport Research Institute      000-06

May, 1964


Tokuichi HAMADA

 Using the first perturbed vorticity equation, it is shown that the infinitesimal vorticies in water are rapidly amplified when th...

Experimental Investigation of a Curtain-wall Breakwater

Port and Airport Research Institute      003-01

April, 1964

Breakwaters Laboratory
Michio MORIHIRA,Shusaku KAKIZAKI,Yoshimi GODA

 In this paper the characteristics of a curtain-wall breakwater which have been studied experimentally are presented. A curtain-wa...

Wind Wave in Decay Area

Port and Airport Research Institute      000-05

April, 1964


Hisashi MITSUYASU,Hisao KIMURA

 Measurements of wind waves have been done in the decay area of large scale flume (70m×1.5m×1.3m) including a point at the end of ...

A New Method for the Estimation of Lateral Resistance of Piles

Port and Airport Research Institute      002-03-02

March, 1964

Foundations Laboratory
Koichi KUBO

A New Method for the Estimation of Lateral Resistance of Piles

Port and Airport Research Institute      002-03-01

March, 1964

Foundations Laboratory
Koichi KUBO

1. Lateral load tests on a number of steel model piles were carried out in saturated sand layer. Main findings are as follows:(1)