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1〜15 articles out of 15 articles

A Case Study on a Braced Excavation in Soft Soils

Port and Airport Research Institute      028-04-02

December, 1989

Geotechnical Survey Laboratory
Hiroyuki TANAKA,Tsugio ADACHI,Tomotoki TOYODA

Large displacements of sheet piles were observed in the braced excavations at the development of the Tokyo International Airport. ...

Reproducibility of Directional Random Waves in Laboratory Waves Simulation

Port and Airport Research Institute      028-04-01

December, 1989


Tomotsuka TAKAYAMA,Tetsuya HIRAISHI

Cross spectra of multi-directional waves generated by a serpent-type wave generator have theoretically been derived for both cases...

Mechanical Properties of Repaired Steel Sheet Piles

Port and Airport Research Institute      028-03-05

September, 1989

Structual Mechanics Laboratory
Osamu KIYOMIYA,Takatoshi NOGUCHI,Hiroshi YOKOTA

Steel sheet piles in marine environments have been damaged bitterly by corrosion. Some sheet piles are lacking in their strengths....

New Method for Determining Undrained Strength of Clayey Ground by Means of Unconfined Compression Test and Triaxial Test

Port and Airport Research Institute      028-03-04

September, 1989

Runways Laboratory
Takashi TSUCHIDA,Jun-ichi MIZUKAMI,Ken OIKAWA,Yoshio MORI

The half of the mean unconfined compression strength qu/2 have been routinely used as the undrained strength of the clayey ground ...

Planning of Model Tests and Reliability of Test Results -Bearing Capacity of a Circular Foundation on Sand-

Port and Airport Research Institute      028-03-03

September, 1989


Masaaki TERASHI,Toshio ENDOH,Masaki KITAZUME

The ISSMFE technical committee on geotechnical centrifuge modeling proposed an international cooperative test program in orer to e...

Wave-induced Liquefaction in Seabed -Field Observation and Analysis-

Port and Airport Research Institute      028-03-02

September, 1989


Kouki ZEN,Hiroyuki YAMAZAKI,Yasushi SATO

The results of the field observation and the theoretical analysis of the wave-induced liquefaction in a seabed are presented in th...

Wave Concentration Principle and Its Application for a New Wave Absorbing Caisson

Port and Airport Research Institute      028-03-01

September, 1989

Maritime Structues Laboratory
Shigeo TAKAHASHI,Katsutoshi KIMURA,Satoru TANAKA

Perforated wall caisson have low wave reflection and overtopping characteristics, and is relatively stable because of their wave a...

Development of Lift-Up Method for Rehabilitation of Settled Prestressed Concrete Pavements

Port and Airport Research Institute      028-02-03

June, 1989

Runways Laboratory
Katsuhisa SATO,Yoshihtaka HACHIYA,Masashi KAMINAKA,Haruo INUKAI,Yukihiro KAWAMOTO,Satoru TSUKADA

A new lift-up method for prestressed concrete (PC) pavements has been developed as a rehabilitation method for adjusting the uneve...

Fabric-Reinforced Embankment on Soft Clay Ground

Port and Airport Research Institute      028-02-02

June, 1989


Masaaki TERASHI,Masaki KITAZUME

Successful case histories of fabric-reinforced embankment constructions on mostly soft peat or soft organic clay have been reporte...

A Hydraulic Experimental Study on Semi-circular Caisson Breakwaters

Port and Airport Research Institute      028-02-01

June, 1989

Head of Hydraulic Engineering Division
Katsutoshi TANIMOTO,Nobutaka NAMERIKAWA,Yoshizumi ISHIMARU,Tsunehiro SEKIMOTO

A new type of caisson which is suitable for application to relatively shallow water breakwaters has been developed and is called a...

Experiments on ultrasonic sand layer profiler system in capping constructions

Port and Airport Research Institute      028-01-05

March, 1989

Instrumental Construction Control Laboratory
Sumitaka KIHARA,Kazuhiro SHIRAI,Taketo SHINOHARA

Measurement of the thickness of the sand layer spread over the soft mud layer at the bottom of harbors, etc. is important in such ...

Duplication of aged clay by consolidating Clay Slurry at High Temperature

Port and Airport Research Institute      028-01-04

March, 1989


Takashi TSUCHIDA,Masaki KOBAYASHI,Jun-ichi MIZUKAMI,Masanori TANAKA

In this report, after studying the effect of aging on the themechanical properties of marine clays, a simple yet effective procedu...

Behaviour of Buried Pipes under Loading of Aircraft

Port and Airport Research Institute      028-01-03

March, 1989

Runways Laboratory
Msahiko FUKAMI,Katsuhisa SATO,Masaki KOBAYASHI

Rigid pipes, for example concrete pipes, have been mainly used for airport buried pipes. These types of pipes, however, have some ...

Experimental Investigation on Erosion and Deposition of Fine Cohesive Sediments in a Annular Rotating Channel

Port and Airport Research Institute      028-01-02

March, 1989

Environmental Hydraulice Laboratory
Kazuo MURAKAMI,Fuminori SUGANUMA,Hitoshi SASAKI

The movement of fine cohesive sediments, such as silt or clay, which causes the sedimentation in trenches and channels, shows the ...

Wave Set-up near the Shoreline -Field Observation at HORF-

Port and Airport Research Institute      028-01-01

March, 1989


Kazumasa KATOH,Shin-ichi YANAGISHIMA,Tomoyoshi ISOGAMI,Hiroyuki MURAKAMI

To understand the actual condition of the abnormal rise of sea water on the beach in storm, the field observation has been carried...