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Fundamental Experimaents on the Recycling of Asphalt Concrete

Runways Laboratory
Katsuhisa SATO,Tsutomu FUKUTE,Mineo SATO

　The importance of effective recycling of old crushed pavements has been often pointed out for aggregate shortage and solid waste ...

-The Investigation on Trurbidity due to the Drag Saction Dredger-

Tokuji YAGI,Yasuji SAOTOME,Yoshiharu NAKAZONO,Shigeru KONO,Katsuto MASUDA,Kenji HAMADA,Yoshihiro SATO,Masaru SAITO

Wave Transformation On a Reef

Storm Surge and Tunami Laboratory
Tomotsuka TAKAYAMA,Yutaka KAMIYAMA,Osamu KIKUCHI

　Model tests have been carried out in order to make clear the characteristics of wave transformation, elevation of mean water leve...

Measurement of Vibration Due to Pile Driving at Sea

Earthquake Disaster Prevention Laboratory
Tatsuo UWABE,Setsuo NODA,Tadaki CHIBA

　A vibration measurement of pile driving at a construction site of a quaywall is carried out. An analysis of the vibration due to ...

Prestressed Concrete and Offshore Structures

Nobuaki OSTUKI,Hiroshi SEKI

　Prestressed concrete has many abvantages of a structural material for offshore facilities, and it is exected that many facilities...

Durablity of Resin Concrete under Sea Environments

Hiroshi SEKI,Nobuaki OTSUKI

　Resin concrete has many advantages for the structural members. It is of neccessity for resin concrete members to maintain adequat...

Consideration on Wave Spectra Estimation by MEM (Maximum Entropy Method) (2) -Problems Based on the FPE Scheme-

Hydrodynamics Laboratory
Hiroichi TSURUYA,Hajime KATO

It is said that a new method (Maximum Entropy Method or MEM) for power spectral density estimation is superior to other convention...

Consideration on Wave Spectra Estimation by MEM (Maximum Entropy Method) (1) -Relationship between Prediction Error Power and Filter Length-

Costal Obsevation Laboratory
Tomoharu TAKAHASHI,Munekazu HIROSE,Tetsuya SASAKI

　MEM(Maximum Entropy Method) for power spectral density estimation has been experimentally investigated. It has been known that th...

Analysis of the Joint Distribution of the Periods and Heights of Sea Waves with Observed Records

Wave Laboratory
Yoshimi GODA

　The joint distribution of wave periods and heights is investigated for 89 surface wave records at the coastal waters, and compare...

The Analysis of The Calmness ina Harbour with Irregular Waves

Wave Laboratory
Yoshimi GODA,Yasumasa SUZUKI,Hachisuka Kazuyoshi

　Up to this time, the model test to estimate the calmness in a barbour has been carried out by using the regular waves. But proble...

A comparative examination of the wave pressure formulas applied to the design of composite breakwaters

Automatic Design Laboratory
Kouji MOTO,Kenichiro MINAMI,Hideki SATO

　The important pressure formulas, which are applied to the design of composite breakwaters with the vertical wall, are as follows;...

A few investigations on design method of port structures Stability of breakwaters in earthquakes Minimum thickness of mound and thickness of concrete caisson cap of quaywalls Investigation of damage of apron pavements

Design Standard Laboratory
Masataka OYADOMARE,Osamu NAKANISHI,Shuji ISHIZUKA

　The authors investigated some aspects of design method of port facilities. They are1.Stability of composite breakwaters in earthq...

Investigation of surcharge of port quaywalls

Port Planing Laboratory
Hiroshi ENDO,Akira SASADA,Shuji ISHIZUKA

　In design of port structures, it is very important to set up all design conditions reasonably in view of reasonable design. Howev...

A Report on the Field Test of Barges -The Behavior of the Barge with its Sand and Soil being dumped the Sea-

Yasuji SAOTOME,Koji ISHIZUKA,Shigeru MATSUMOTO

　This paper describes field test on behavior of the large barge when its sand and soil is dumped the sea for getting the fundament...

Note of the Investigations on Changes of Shore Lines in Japan, Part3 -The investigations on shore line changes by using aerial photographs-

Norio TANAKA,Hiroaki OZASA,Kazuyoshi HACHISUKA,Eiichi MIYOSHI

　Nowadays, beach erosions have spread to most all over sand beaches in Japan. These causes are as follows,1) Many undertakings for...

The design method for preventing-storm-surge gates

Design Standard Laboratory
Shuji ISHIZUKA,Ikuo MITSUHASHI,Kiyoshi KUBO

　We can see a lot of gates against storm surge in the port area of Japan. This gate prevent storm surge from breaking into the lan...

Resistance effect of piles against slides in the ground

Subaqueous Tunnels and Pipelines Laboratory
Shigeo NAKAYAMA,Osamu KIYOMIYA

　There are many mthods to evaluate the resistance effect of the piles against the slides in the ground. This paper describes exami...

An Experimental Study of Ship's Berthing Impact

Offshore Structures Laboratory
Osami HORII,Shigeru UEDA,Katsuhiro YANAGISAWA

　Virtual mass of berthing ship, Which is important to calculate the ship's berthing energy, was examined experimentary in ...

An Application of Computer Programs to the Design of Airport Concrete Pavements

Runways Laboratory
Tsutomu FUKUTE

　The design of airport concrete pavements is based on Westergaard's formulas in many countries. These formulas are so comp...

Important subprograms in the field of port & harbour structures design.

Automatic Design Laboratory
Kouji MOTO,Ikuo MITSUHASHI

　We have aleady developed many large programs in the field of port & harbour structures. Each large program consists of a ...