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1〜7 articles out of 7 articles

Application of Modeling of Circular Steel Tube Considering Diameter-to-Thickness Ratio to Various Port Facilities

Port and Airport Research Institute      1338

December, 2017

Earthquake and Structural Dynamics Group
Yousuke OHYA, Yoshio SHIOZAKI, Eiji KOHAMA, Yuichiro KAWABATA

The full plastic moment of a circular steel tube is generally calculated by multiplying the plastic section modulus by the yield s...

Practical Approach to Preventive Maintenance of Port Steel Structure

Port and Airport Research Institute      1336

September, 2017

Structural Mechanics Group
Ema KATO, Nozomu SOMEYA, Yuichiro KAWABATA, Hiroto TADO, Toru YAMAJI, Nobuhito NAKATANI

 It is essential to apply the anticorrosive coating and/or the cathodic protection to port steel structures such as steel pipe pil...

Generation and Characteristics of Multi-directional Waves in Shallow Water - For Distributed Directional Spectra along Linear Boundary in Constant Depth -

Port and Airport Research Institute      1337

September, 2017

Wave Group
Katsuya HIRAYAMA, Yasuhiro AIDA, Akinori NAKAMURA

Generally, random waves are generated by a serpent-type wave maker for a representative offshore wave spectrum determined with spe...

Field measurement and flume experiment studies on sedimentation in river mouth port, a case study in the Port of Niigata

Port and Airport Research Institute      1334

June, 2017

Coastal and Estuarine Sediment Dynamics Group
Yasuyuki NAKAGAWA, Noriko TAKASHIMA, Takumi SHINOZAWA

The aim of the research is to elucidate suspended sediment transport and their deposition processes especially at river mouth or e...

Annual Report on Nationwide Ocean Wave Information Network for Ports and Harbours (NOWPHAS 2015)

Port and Airport Research Institute      1333

June, 2017


Koji KAWAGUCHI, Satoshi SAKURABA, Takashi FUJIKI, Hitoshi TAMURA

Since 1970, the Ports and Harbours Bureau, Ministry of Land, Infrastructure, Transport and Tourism and its associated organization...

Annual Report on Strong-Motion Earthquake Records in Japanese Ports (2015)

Port and Airport Research Institute      1331

March, 2017

Engineering Seismology Group
Atsushi NOZU , Yosuke NAGASAKA

Since 1962, strong ground motions and earthquake responses of structures have been observed in the major ports in Japan. In 2015, ...

Reconsideration of the Methods for Eelgrass Restoration

Port and Airport Research Institute      1332

March, 2017

Maritime Environmental Information Group
Shinya HOSOKAWA

Eelgrass (Zostera marina L.) meadow , which have important ecological functions in coastal and estuarine areas, are distributed wi...