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1〜20 articles out of 30 articles

On Earthquake Resistant Design Methods of Submarine Pipelines

Port and Airport Research Institute      0307

December, 1978


Osamu Kiyomiya

Earthquake resistant design methods of submarine pipelines can be classified three methods; (1) dynamic response analysis by using...

Studies on the Stability of Grooves in Asphalt Pavements

Port and Airport Research Institute      0308

December, 1978

Runways Laboratory
Katsuhisa SATO,Tsutomu FUKUTE,Mineo SATO

In this country, runway grooving has been becoming to be widely adopted to insure safer operation of large or high-speed aircraft ...

Planning and Designing of Tide Gates

Port and Airport Research Institute      0310

December, 1978


Takao ITO,Kiyoshi KUBO,Osamu NAKANISHI

Due to the small amount of information avaiable on planning and designing of tide gates and coastal drainage facilities, it is urg...

Vibration Tests for the Behavior of Light-Weight Materials as Backfilling

Port and Airport Research Institute      0299

September, 1978

Vibration Laboratory
Hideo ARAI,Shoichi KITAJIMA

It has been recognized by the model tests that a method to decrease active earthpressure by applying the light-weight materials as...

Automatic Design System of Piled Wharf Supperstructure

Port and Airport Research Institute      0300

September, 1978

Automatic Design Laboratory
Kenichiro MINAMI,Shuji YAMAMOTO,Koji MOTO,Toshihiko SHIOZAWA

In this paper, we report the automatic design system of piled wharf supperstructure, which carry out the calculation of bar arrang...

Optimum Design of Composite Breakwater

Port and Airport Research Institute      0301

September, 1978

Automatic Design Laboratory
Shuji YAMAMOTO,Toshihiko SHIOZAWA

In this paper non-L.P. optimizing technique was applied to the most economic design of composite breakwater and the computer progr...

Shape effects of model Front-open-type suction heads on dredging Hedoro

Port and Airport Research Institute      0302

September, 1978


Kenji HAMADA,Masaru SAITO,Tokuji YAGI,Yoshihiro SATO

With four kinds of model Front-open-type suction heads which are very hopeful, a series of experiments on dredging pseudo-Hedoro w...

New computation program of sea wave diffraction and optimal dividing number of wave spectrum.

Port and Airport Research Institute      0303

September, 1978

Wave Laboratory
Tomotsuka TAKAYAMA,Shinzi YOKOTA,Takahide KOCHI

Computing Programs of the diffaction of diffracted waves, and irregular wave diffraction due to the gap of breakwater have already...

Flow Development between Two Parallel Moving Plates

Port and Airport Research Institute      0304

September, 1978


Hideyuki SHOJI

This paper investigates flow development between disc rotators which are used to collect floating rubbish on a sea surface. The di...

Turbidity and Operating Condition of Pump Dredger

Port and Airport Research Institute      0305

September, 1978


Yohiharu NAKAZONO,Kenji HAMADA,Yasuji SAOTOME,Shyoji MIYAZAKI,Katsuto MASUDA,Yasumasa OGATA,Yoshikuni OKAYAMA,Shigeru KONO

The relationships between turbidity and operating conditions of pump dredger are investigated by field test. This investigation is...

Development of Sabmarine Sampling System for Long Continuous Soil Sample.(MAS-76)

Port and Airport Research Institute      0306

September, 1978

Soil Investigations Laboratory
Kazuaki MATSUMOTO,Hiroyasu HORIE,Fumiko OGAWA,Shigeo KOBAYASHI

In design and construction of off-shore structures on the deep sea, it is absolutely necessary to obtain accurate information on t...

State-of-the-art of performances of Boring and Sampling in Very deep Sea (2nd Report) -On the outline of Marine Auto Sampler and Results of Field experiment-

Port and Airport Research Institute      0295

June, 1978

Soil Investigations Laboratory
Kazuaki MATSUMOTO,Hiroyasu HORIE,Fumiko OGAWA,Shigeo KOBAYASHI

 Due to the recent increasing demand for construction of both large harbours and ocean developments, there is a great necessity to...

Vibration Tests of Model Anchored Sheet-Pile Walls -A Case of Movable Anchor Walls-

Port and Airport Research Institute      0296

June, 1978

Vibration Laboratory
Hideo ARAI

Vibration tests of model anchored sheet-pile walls with a rigid, flexible and fixed anchor wall in dry sand were performed using b...

On Pressure at a Bed Induced by a Model Drag Head

Port and Airport Research Institute      0294

June, 1978


Yoshihiro SATO,Tokuji YAGI,Masaru SAITO

 This paper studies effects of shapes on suction performance of a drag head for a trailing suction dredge through investigations o...

Vibration Tests of Model Anchored Sheet-Pile Walls - A case which the dredge level is not plane -

Port and Airport Research Institute      0297

June, 1978

Vibration Laboratory
Hideo ARAI,Setsufumi SAITO

The vibration tests of two type model anchored sheet-pile walls which the dredge level is plane and not plane were perfomed in ord...

Study on the Environmental Data Banking Systems -Air Quality, Water Quality and Sludge-

Port and Airport Research Institute      0293

June, 1978

System and Management Section
Takahide KOUCHI,Yoshihiro SASAKI

 Expectations to the Environmental Data Banking Systems were changed from the age of collection to the age of integration, edition...

Site Characteristics of Strong-Motion Earthquake Stations in Ports and Harbours in Japan (Part IV)

Port and Airport Research Institute      0298

June, 1978

Earthquake Resistant Struetures Laboratory
Yoshiko YOKOYAMA,Eiichi KURATA  Strong-motion earthquake network in ports areas

Strong-motion earthquake network in ports areas in Japan consisted of 69 stations in 46 ports as of March 1978. This report presen...

A Performance Test on the Sea Surface Cleaning Boat

Port and Airport Research Institute      0292

June, 1978


Koji ISHIZUKA,Mineo IWASAKI,Tadao NAKAJIMA,Ken OTOMO

 The Dredger and Construction Equipment Laboratory has developes a new sea surface cleaning system with water jets in 1976. The ne...

The Methods to Calculate the Loads on Pipes in Filling Sand

Port and Airport Research Institute      0291

June, 1978


Kunio TAKAHASHI,Masatoshi SAWAGUCHI

The methods to calculate the loads on horizontal pipes in filling sand are studied in this paper. One of which is finite element m...

Numerical Simulation on Nearshore Current

Port and Airport Research Institute      0290

June, 1978

Vice-director
Shoji SATO,Toshihiko NAGAI,Hiroaki OZASA

 Nearshore current caused by wave is one of the most important factors of littoral drift and pollutant dispersion. There is a nume...