1995年1月17日に生じた兵庫県南部地震は、建築物や橋梁、鉄道など土木構造物に甚大な被害をもたらしたが、神戸港の周辺にある産業施設、機械構造物も多数損傷した。生産活動、エネルギー供給に直結する産業施設の地震対策は、石油タンク、高圧ガス施設、電力機器、クレーンなど主要な設備に対しては個別になされていたが、例えば神戸製鋼所などの大規模工場が壊滅的な被害を受けることは、従来の予想をはるかに上回るものであった。筆者は、地震後に主として産業施設の被害調査に関わってきたが、本稿ではその中から得られた構造物の被害の特徴について概観する。また、今後の機械構造物の耐震設計や耐震技術のあり方について展望してみたい。
In this paper，investigation on the damages to the machineries，gas facilities and other mechanical structures caused by the Hyogo-ken Nanbu Earthquake was carried out. First，the development of anti-earthquake technologies in the field of the industrial structures in Japan was briefly surveyed based on the historical experiences of earthquake damages and the progress of countermeasure technologies. The structural damage mode has been correspondingly influenced by the progressive change of the industrial production system. For example，it must be noticed that joint or connecting devices and elements among the complex industrial facilities such as the chemical plants and the widespread production lines became easier to be suffered from the seismic damages than earlier. Throughout the summary of the investigation，future problems to be taken up for the seismic countermeasure program for these structures were provided. Among these，the following issues have to be particularly investigated. (1) a “flexibilized” design technology by use of seismic isolations and energy absorbers，(2) opotimum design and location program to the basic facilities，the dangerous objects and the widespread lines，and (3) anti-earthquake strategy to the existing structures which might be damaged by earthquakes expected to occur in the near future.
雑誌名
総合都市研究
号
61
ページ
101 - 110
発行年
1996
ISSN
03863506
書誌レコードID
AN00134354
著者版フラグ
publisher
その他のタイトル
Earthquake Damages on Industrial Facilities and Anti-Earthquake Technology : From the Experiences of the 1995 Hyogo-ken Nanbu Earthquake
産業施設の地震被害と耐震技術 : 兵庫県南部地震の教訓から
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