DAMAGE ASSESSMENT ON WATER SUPPLY SYSTEM AND SEWERAGE SYSTEM AT THE 2011 OFF THE PACIFIC COAST OF TOHOKU EARTHQUAKE - CASE STUDY FOR THE DATA AT IBARAKI AND CHIBA PREFECTURES

• 那波 悟志

  筑波大学大学院システム情報工学研究科

• 築地 拓哉

  筑波大学理工学群工学システム学類

• 庄司 学

  筑波大学大学院システム情報工学研究科

• 永田 茂

  鹿島建設（株）技術研究所

Bibliographic Information

Other Title

• 2011年東北地方太平洋沖地震における上水道および下水道の被害分析－茨城県および千葉県の情報の得られた被災都市の傾向－

Abstract

 We evaluate the dependency of damage and restoration of water supply systems and sewerage system on the seismic hazards in the 2011 off the Pacific Coast of Tohoku earthquake focusing on the damage at Ibaraki and Chiba prefectures. We use the damage data of the systems by carrying out field survey, interviews for related local government sectors and surveying the information in web sites. We quantify two damage ratios defined by the ratio of number of physical damage points N_p with the related pipeline lengths L and that of disrupted lengths L_d with L. In addition, we discuss relation between restoration periods with the seismic hazards. Finally, we verify the fitting of the damage data with previous seismic fragility curves on sewerage pipelines.

Journal

• Journal of Japan Society of Civil Engineers, Ser. A1 (Structural Engineering & Earthquake Engineering (SE/EE))

  Journal of Japan Society of Civil Engineers, Ser. A1 (Structural Engineering & Earthquake Engineering (SE/EE)) 68 (4), I_1194-I_1209, 2012

  Japan Society of Civil Engineers

Keywords

• The 2011 off the Pacific Coast of Tohoku earthquake
• water supply system
• sewerage system
• fragility curve
• damage ratio

Details

• CRID: 1390282680326182528
• NII Article ID: 130004556775
• DOI: 10.2208/jscejseee.68.i_1194
• ISSN: 21854653
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed