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1〜20 articles out of 20 articles

Studies on Boring and Sampling of Saturated Alluvial Clays (5th Report)

Port and Airport Research Institute      009-04-02

December, 1970


Kazuaki MATSUMOTO,Hiroyasu HORIE,Tatsuro OKUMURA

 As a part of field test series, the effect of differences was investigated in the tip shape of the sampling tube (edge angle and ...

Estimation of the Rate of Irregular Wave Overtopping of Seawalls

Port and Airport Research Institute      009-04-01

December, 1970


Yoshimi GODA

Design of a seawall requires the estimation of the rate of wave overtopping with due consideration for wave irregularity. The pres...

Basic Properties of Prepacked Concrete Using Alumina Cement

Port and Airport Research Institute      009-03-04

September, 1970


Yoshinori AOKI,Hiroshi SEKI,Sachio ONODERA

 Tests on basic properties of intrusion mortar and prepacked concrete using alumina cement were conducted. Items of intrusion mort...

Experimental Studies opn Airport Pavements by Static Loading Tests

Port and Airport Research Institute      009-03-03

September, 1970

Runways Laboratory
Hiroshi SUDA,Hiraku MORIGUCHI,Katsuhisa SATO,Tomio YOSHIDA,Haruo KAWAMOTO,Yoichi ABE

 Five kinds of airport test pavements for large aircraft were made on the subgrade of high water content loam. These pavements wer...

Experimental Study of Wind Waves on Water Currents (1st Report)

Port and Airport Research Institute      009-03-02

September, 1970

Storm Surge and Tunami Laboratory
Hajime KATO,Kikuo SANO

 The measurements have been made of the wind waves generated on opposing currents in a wind wave channel which is equipped with a ...

Numerical Experiments on Wave Statistics with Spectral Simulation

Port and Airport Research Institute      009-03-01

September, 1970


Yoshimi GODA

 Statistical characteristics of irregular waves which are described with power spectra have been investigated with computer simula...

On the Excavation Characteristic of Rocks in the Water by Water-jets

Port and Airport Research Institute      009-02-06

June, 1970


Kiichiro FUJII,Teruaki MORIGUCHI

 For the dredging operations at hard strata and rocks in the sea-bottom, special dredgers are used today, but the operation of the...

On the Earthquake Resistance of Anchored Sheet-Pile Walls (2nd Report)

Port and Airport Research Institute      009-02-05

June, 1970

Vibration Laboratory
Hideo ARAI,Yoshiaki FUJINO,Keiko SAKAI

 The effects of frequencies on the model anchored sheet-pile wall on a shaking table were investigated experimentally in the frequ...

Vibration Test and Circular Arc Analysis for Full-scale Models of Levee

Port and Airport Research Institute      009-02-04

June, 1970

Earthquake Resistant Struetures Laboratory
Hajime TSUCHIDA,Setsuo NODA,Eiichi KURATA

 A series of the investigations have been conducted for the earthquake-proof design of soil embankments which are actually levees....

A Study on the Average Contact Pressure of Airplain Tires

Port and Airport Research Institute      009-02-03

June, 1970

Runways Laboratory
Hiroshi SUDA,Katsuhisa SATO,Yoichi ABE

 There have been many uncertain points about the contact area and average contact pressure of airplain tires which are necessary f...

Bearing Capacity of Foundation on Cohesive Soil under Eccentric and Inclined Loads

Port and Airport Research Institute      009-02-02

June, 1970


Akio NAKASE,Masaki KOBAYASHI

 Bearing capacity of foundation on cohesive soil stratum under eccentric and inclined loads is analysed based on the assumption of...

Digital Computation on the Effect of Breakwaters Against Long-period waves (6th Report) - On the Head-loss Coefficient at the Tsunami-Breakwater Opening-

Port and Airport Research Institute      009-02-01

June, 1970

Breakwaters Laboratory
Yoshiyuki ITO,Tsutomu KIHARA

 In chapter one, the influence of the head-loss coefficient f・u2/2g at tsunami-breakwater opening is discussed. A series of calcul...

Reflection and Transmission Characteristics of Ultrasonic Wave in Soft Mud Layer -An Experiment on Fly-

Port and Airport Research Institute      009-01-07

March, 1970


Sumitaka KIHARA

 For the development of echo-sounder which detect efficiently the soft mud layer, it is necessary for us to study into the effect ...

Studies on Space of Wharf Apron and Related Cargo Handling Activities

Port and Airport Research Institute      009-01-06

March, 1970

System and Management Section
Kazuo KUDO,Kenjiro KOHRIKI,Shigemi KUBO

 Cargo handling activites on the wharf apron are analysed and formulated into simulation model. Data of field observation which ha...

Evaluation of Seismic Stability of Trestle Type Pier with Vertical Steel Piles

Port and Airport Research Institute      009-01-05

March, 1970

Director
Ryuichi YAMAMOTO,Satoshi HAYASHI,Hajime TSUCHIDA,Ikuhiko YAMASHITA,Koichiro OGURA

 Among various harbour structures, a trestle type pier with vertical steel piles is unique in respect that it is very flexible. He...

On the Development of A New Wave Direction Meter

Port and Airport Research Institute      009-01-04

March, 1970

Costal Obsevation Section
Tomoharu TAKAHASHI,Yoshimi SUZUKI,Hiroshi SASAKI

 It is important to have the knowledge of the wave direction characteristics of coastal waves for understanding of coastal phenome...

A New Current-Meters of All-Direction-Type(1st Report)

Port and Airport Research Institute      009-01-03

March, 1970


Akihiko SHIBAYAMA,Shigeru SUDO

 In order to effect the best means for stable field observation of current, the new current-meters of all-direction-type have been...

Similitude of the Model Test on Harbour-Shoaling with a Movable Bed -The Case of the Model Test of Kashima Port-

Port and Airport Research Institute      009-01-02

March, 1970


Shoji SATO,Norio TANAKA,Isao IRIE,Junji HIRAHARA

 The similitude of a movable-bed model was discussed based on the comparison of the data of model tests with the field data for th...

Experimental Investigation on the Horizontal Resistance of Coupled Piles

Port and Airport Research Institute      009-01-01

March, 1970


Masatoshi SAWAGUCHI

 This paper, at first, outlined the so far proposed computation methods on horizontal resistance of coupled piles, and then, descr...

Develpment of a Leveling Euipment for Rubble Mounds

Port and Airport Research Institute      009-01-08

March, 1970


Taisei KOIWA,Katsu OHIRA,Isamu HIRAYAMA,Yashuo SHIRATORI

Authors try to develop leveling equipments for rubble mounds such as for caissons. This paper descrides a model equipment develop