Search for PARI Report/Technical Note
Proposal and Performance Test of Attachment for Realization of Remote Operation of Rubble Mound Leveling Work with Underwater Backhoe
Port and Airport Research Institute 1396
December, 2021
Meta-Robotics Group
Tsukasa KITA,Taketsugu,HIRABAYASHI,Shunsuke TAKAO,Hiroshi KINJO,Naoki OSHIRO,Atsushi UEYAMA
Leveling work of rubble mound is one of the typical work of port construction. At present, this work is mainly carried out by han...
Statistical Analysis on Parallel Body Lengths and Wind Receiving Areas of Ships
Port and Airport Research Institute 1395
December, 2021
Haruo YONEYAMA,Hiroaki KASHIMA
The parallel body length and wind receiving areas of a ship are used for calculating the ship berthing energy in fender design an...
Annual Report on Strong-Motion Earthquake Records in Japanese Ports (2019)
Port and Airport Research Institute 1394
December, 2021
Engineering Seismology Group
Yosuke NAGASAKA,Atsushi NOZU
Since 1962, strong ground motions and earthquake responses of structures have been observed in the major ports in Japan. In 2019,...
Caisson Joint Wave Reduction Method for Suppressing Internal Erosion and Collapse of Seawalls and Quaywalls
Port and Airport Research Institute 1393
December, 2021
Soil Dynamics Group
Shinji SASSA,Osamu ISHIZAKA
Collapse at the back sides of seawalls and quaywalls has occurred all over the world. This often stems from defects in caisson jo...
Study of maintenance for cathodic protection applied to marine steel structures
Port and Airport Research Institute 1392
December, 2021
Materials Group
Toru YAMAJI,Masayuki HARA,Ken-ichi NOTOYA,Nobumitsu YAMANOBE, Yasuhiro TAKAHASHI,Shigenori KOBAYASHI,Masaharu WATANABE
In the general periodic inspection diagnosis of cathodic protection applied to marine steel structures, we can get quantitative in...
Large-scale Model Test for the Bearing Capacity of Open-ended Straight and Tapered Piles
Port and Airport Research Institute 1391
December, 2021
Foundations Group
Keita NAKAMURA,Yusuke MOTOMIZU,Satoshi MATSUMURA,Takaaki MIZUTANI,Eiji OSHITA,Satoshi SHINGAI,Yasutaka SAKAMOTO,Naoaki SUEMASA
It is well known that the bearing capacity of open-ended piles with a constant pile diameter used in port and harbor facilities d...
Construction of the Prototype of Underwater Machine Guidance System for an Underwater Excavator and Accuracy Verification
Port and Airport Research Institute 1390
September, 2021
Meta-Robotics Group
Tsukasa KITA,Taketsugu HIRABAYASHI,Shunsuke TAKAO,Muneo YOSHIE
In marine construction in Okinawa, underwater excavators with divers on board have been used for a long time because the seawater ...
Field measurement of seasonal variation in sediment transport around the Patimban coast, Indonesia
Port and Airport Research Institute 1389
September, 2021
Coastal and Estuarine Sediment Dynamics Group
Yasuyuki NAKAGAWA,Masayuki BANNO,Taichi KOSAKO,Hitoshi TAMURA,A.Bagyo Widagdo,Dinar C. Istiyanto
It is important to understand the sediment transport processes around port facilities, especially for minimizing siltation in navi...
Analysis of pile driving records in the Tobishima area of Nagoya Port and consideration on construction management methods
Port and Airport Research Institute 1388
September, 2021
Foundations Group
Takaaki MIZUTANI,Satoshi MATSUMURA,Toru FUJITA,Yasuhiro TAKEUCHI,Masaya KANI,Hiroyuki SAEGUSA,Yasushi KISHI
It is common to manage the construction using the Hailey’s formula, when steel pipe piles used for foundations of port facilities....
Effect of consolidation settlement on horizontal resistance of soft landing moundless structure with piles
Port and Airport Research Institute 1387
September, 2021
Foundations Group
Satoshi MATSUMURA,Takaaki MIZUTANI,Masaru SAKEI
Settlement of the soft landing moundless structure with piles in the Kumamoto port has recentlybecome a significant issue that ca...
Annual Report on Strong-Motion Earthquake Records in Japanese Ports (2018)
Port and Airport Research Institute 1386
June, 2021
Engineering Seismology Group
Yosuke NAGASAKA・Atsushi NOZU
Since 1962, strong ground motions and earthquake responses of structures have been observed in the major ports in Japan. In 2018, ...
Fundamental Study on Wave Reduction Effects by a Wave Power Generating Floating Breakwater
Port and Airport Research Institute 1385
June, 2021
Haruo YONEYAMA・Hiroaki KASHIMA
In this study, we proposed a “wave power generating floating breakwater” as a floating breakwater equipped with oscillating water ...
Evaluation of Performance and Applicability of Hydro-Plane Type Tunami Breakwater
Port and Airport Research Institute 1384
March, 2021
Earthquake and Structural Dynamics Group
Takahiro Sugano・Tomotsuka Takayama・Tetsuya Hiraishi・Ryoukei Azama・Nozomi Yoneyama・Hitoshi Goto・Hiroyuki Ikari・Akira Tatsumi・Yosuke Nagasaka・Yu Chida・Katsuhide Nishizono・Takamitsu Fukazawa・Koji Tonomo・Akito Sone・Toshiyuki Hirai・Kozo Kamide・Tadao Ito・Hideak
Tsunami attacks land-area in a few minutes just after earthquake shaking or it is transmitted just after the coastalstructure and ...
Surrounding Scour of surf zone structure and changing uniformity of coast in longshore direction
Port and Airport Research Institute 1383
March, 2021
Research Director (Beach Process Computing)
Satoshi NAKAMURA
The observation pier at Hazaki Oceanographical Research Station (HORS) is supported by steel piles that queue up in single row (pa...
On In Situ Accuracy Verifi cation and Calibration of Wind Speed and Direction Meter on the Ship: Study using a ferry on a regular service route at the mouth of Tokyo Bay
Port and Airport Research Institute 1382
March, 2021
Maritime Environmental Information Group
Shinya HOSOKAWA・Shota OKURA
Wind observation by ships is important for the understanding of weather and oceanographicconditions and for the safe navigation of...
Annual Report on Nationwide Ocean Wave Information Network for Ports and Harbours (NOWPHAS 2019)
Port and Airport Research Institute 1381
March, 2021
Koji KAWAGUCHI・Kanichiro YOSHIDA・Takashi FUJIKI・Hitoshi TAMURA
Since 1970, the Ports and Harbours Bureau, Ministry of Land, Infrastructure, Transport and Tourism and its asso-ciated organizatio...