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1〜20 articles out of 29 articles

Hydraulic Characteristics of Curved Double Slit Caisson Breakwater

Port and Airport Research Institute      0720

December, 1999

Maritime Structues Laboratory
Shigeo TAKAHASHI,Tokuzo HOSOYAMADA,Tadashi KATAYAMA

 The curved slit caisson breakwater is a kind of perforated-wall caisson with an arc-shaped slit wall, The caisson is very stable ...

A Study on the Characteristics of Motions of Pleasure Boats and Floating Piers in a Marina

Port and Airport Research Institute      0950

December, 1999

Offshore Structures Laboratory
Satoru SHIRAISHI,Kengo NAZATO,Hiroyasu KAWAHARA

 Nowadays, construction and planning of marinas, which moor pleasure boats, are promoted. Most facilities are used to construct ca...

Present State of Timber Structures and Trial Designs of Wharves

Port and Airport Research Institute      0949

December, 1999


Masao YAMADA,Hiroshi YOKOTA

 Present states of resources, strength, durability of timber structures were reviewed.Then trial designs of wharves with timber st...

The model experiment on artificial beach stabilization by Island-type headland

Port and Airport Research Institute      0948

December, 1999


Katsuya HIRAYAMA,Haruhiro MARUYAMA,Tetsuya HIRAISHI

 The model test on the stability of sediments for the artificial beach constructed in the toribar district in the Hirara port is c...

Tidal Flat Environmental Surveys - Determination of the Effects of Environmental Conditions on Benthic Communities -

Port and Airport Research Institute      0947

September, 1999


Keita FURUKAWA,Tomohiro KUWAE,Yasushi HOSOKAWA

A series of environmental surveys on an intertidal flat in the inner part of Tokyo bay were conducted. The survey aims were: (1)to...

Applicability of Reinforced Earth Method to Sea Revetment

Port and Airport Research Institute      0946

September, 1999


Yoshiaki KIKUCHI,Masaki KITAZUME,Yuji KAWADA

 To introduce the technique of reinforced earth methods to construction of port facilities such as sea revetment, the applicabilit...

The Effect of Surface Configuration of Rubble Mounds on the Stress on the Bottom Slab of Caisson

Port and Airport Research Institute      0945

September, 1999

Structural Dynamics Laboratory
Masafumi MIYATA,Takahiro SUGANO,Takashi NAGAO,Katsuji SHINOHARA,Takamichi KONDOH

 In Japan, divers make the suface of a rubble rock foundations flat to avoid intensive forces acting on the bottom slab of a caiss...

Earthquake response observation & analysis of composite breakwater in deep sea(60m depth class)

Port and Airport Research Institute      0944

September, 1999

Earthquake Disaster Prevention Laboratory
Takumi SHINOZAWA,Kouichirou HAYASHI,Tomonobu HIRAIDE,Susumu IAI,Tatsuo UWABE

 Seismic response of a composite breakwater 60 m deep has been recorded, including accelerations and hydro dynamic pressures durin...

Verification of Seismic Performance of An Open Piled Pier by an Elasto-Plastic Method and a Simplified Method

Port and Airport Research Institute      0943

September, 1999

Structual Mechanics Laboratory
Hiroshi YOKOTA,Noriyuki KAWABATA,Hiroaki AKUTAGAWA,Kazuyasu KUROSAKI,Toshiaki TSUSHIMA,Noriyoshi HARADA,Akiko YATO

An open piled pier with steel piles has been widely used as a berthing facility in ports and harbors in Japan. The ductility desig...

ANNUAL REPORT ON STRONG-MOTION EARTHQUAKE RECORDS IN JAPANESE PORTS (1998)

Port and Airport Research Institute      0942

September, 1999

Geotechnical Earthquake Engineering Laboratory
Yukihiro SATO,Koji ICHII,Yuko HOSHINO,Yoko SATO,Susumu IAI,Takeshi NAGAO

 Since 1962, strong-motion earthquakes and earthquake responses of structures have been observed in the major ports in Japan. By t...

Summary of the NOWPHAS Wave, Tide, and Wind Observation Facilities

Port and Airport Research Institute      0941

September, 1999

Costal Obsevation Laboratory
Kazuteru SUGAHARA,Kazutoshi SATO,Toshihiko NAGAI,Koji KAWAGUCHI

 Since 1970, the Port and Harbour Research Institute (PHRI) has been cooperating with the Ports and Harbours Bureau, Ministry of T...

A Study on the Principles of Designing and Composing the Open Spaces in the Waterfronts

Port and Airport Research Institute      0940

September, 1999


Kenji UESHIMA,Masakazu YOSHIMI,Ushio SAITOH

The open spaces in the waterfronts aren't sufficiently designed considering the characteristics of being situated in the w...

Development of the Turbid Water Agglomeration and Seclimentation Technology Using Ultrasonic

Port and Airport Research Institute      0939

June, 1999

Instrumental Construction Control Laboratory
Tomohiro KENMOCHI,Kazuhiro SHIRAI,Muneo YOSHIE

Conventionally, we have removed small particles in muddy water mainly by using  agglomerating medicine and filter. In place of thi...

Characteristics of Water Quality and Current Field around the Tsunami Breakwater in Ohfunato Bay during Summer

Port and Airport Research Institute      0938

June, 1999

Environmental Assessment Laboratory
Masashi TOYOTA,Tadashi HIBINO,Dan'o NISHIMORI,Yasushi HOSOKAWA,Hiroichi TSURUYA

 This paper describes water quality processes in Ohfunato Bay. In Ohfunato bay, the bottom layer becomes oxygen deficient in summe...

Effect of the Difference of Welding Methods of Welded Steel Bar Mesh on Fatigue Properties of Concrete Beams

Port and Airport Research Institute      0937

June, 1999

Structual Mechanics Laboratory
Ryo SUGAWARA,Hiroshi YOKOTA,Akira MIKAMI,Tetsuji AKIYAMA

Application of welded steel bar mesh is suggested for rational and labor saving construction of RC(reinforced concrete) caissons f...

ANNUAL REPORT ON STRONG-MOTION EARTHQUAKE RECORDS IN JAPANESE PORTS (1997)

Port and Airport Research Institute      0936

June, 1999

Geotechnical Earthquake Engineering Laboratory
Yukihiro SATO Koji ICHII Susumu IAI Yuko HOSHINO Yoko SATO

 Since 1962, strong-motion earthquakes and earthquake responses of structures have been observed in the major ports in Japan. By t...

SITE CHARACTERISTICS OF STRONG-MOTION EARTHQUAKE STATIONS IN PORTS AND HARBOURS IN JAPAN (PART ?)

Port and Airport Research Institute      0935

June, 1999

Geotechnical Earthquake Engineering Laboratory
Koji ICHI,Yukihiro SATO,Yoko SATO,Yuko HOSHINO,Susumu IAI

 Since 1962, strong-motion earthquakes and earthquake responses of structures have been observed in the major ports in Japan. The ...

Development of the Cableless Data Acquisition System for Self-Recording Seabed-Installed Type Wave Gauges

Port and Airport Research Institute      0933

June, 1999


Toshihiko NAGAI,Noriaki HASHIMOTO,Tomoharu TAKAHASHI,Kennichi OYAMA,Takashi ISHIHARA

 A cableless data acquisition system for self-recording seabed-installed type wave gauges is newly developed by using 100KHz ultra...

Applicability of Standard Energy Spectrum Density for Long Period Waves

Port and Airport Research Institute      0934

March, 1999


Tetsuya HIRAISHI

 Long period waves with period of 1 to about 5min sometimes cause the termination of cargo loading and unloading. The mechanism of...

Earthquake Observation and Seismic Response Analysis of Embedded Steel Plate Cellular Bulkheads

Port and Airport Research Institute      0932

March, 1999

Earthquake Disaster Prevention Laboratory
Mitsuhiro NAKAMURA,Tatsuo UWABE

 Observation of the dynamic behavior of the embedded steel plate cellular bulkhead during earthquake have been performed at Nagoya...