Study on behavior of seismic type ductile iron pipes influenced by multiple ground deformation in liquefied ground

• 森本 皓一

• 宮島 昌克

• Morimoto Koichi

• Miyajima Masakatsu

Bibliographic Information

Other Title

• 液状化地盤において複数回の地盤変状を受けた耐震継手ダクタイル鉄管の挙動検証

Abstract

金沢大学理工研究域地球社会基盤学系

埋立地等の軟弱地盤では，地震による液状化現象に起因して大規模な地盤変状が生じ，埋設された水道管にも大きな被害を及ぼしてきた．耐震継手ダクタイル鉄管は継手部に伸縮性，屈曲性，離脱防止性を有するため，現在まで地盤変状による被害は発生していない．ただし，大規模な地震動が連続して発生した場合に，液状化地盤に埋設された耐震管路が複数回の地盤変状を受けてどのように挙動するか，明らかにはなっていない．本研究では，1995年に発生した兵庫県南部地震時に計測された地盤変位を用いて，実際に生じた地盤変状を管路に複数回与えて管路の挙動解析を実施し，管路の挙動を検証した．

In earthquake, liquefaction have caused large-scale ground deformation in the soft ground. Therefore, buried water pipelines were damaged seriously. Seismic type ductile iron pipes have never damaged because those joints have extension and contraction function, bend performance, and separation preventing performance. However, we have not clarified how pipelines behave when they were influenced by multiple ground deformation. In this study, we analyzed the behavior of pipeline composed of seismic type ductile iron pipes when the pipelines were influenced by multiple ground deformation, using ground displacement measured at the 1995 Hyogoken-Nanbu Earthquake.

Journal

• 土木学会論文集A1（構造・地震工学） = Journal of Japan Society of Civil Engineers, Ser. A1 (Structural Engineering & Earthquake Engineering (SE/EE))

  土木学会論文集A1（構造・地震工学） = Journal of Japan Society of Civil Engineers, Ser. A1 (Structural Engineering & Earthquake Engineering (SE/EE)) 75 (4), I_238-I_249, 2019

  土木学会 Japan Society of Civil Engineers

Keywords

• multiple times
• ground displacement measurement
• liquefaction
• ductile iron pipe
• pipeline behavior analysis

Details

• CRID: 1390572433059773312
• NII Article ID: 120007185694
• DOI: 10.24517/00065037
• ISSN: 21854653
• Web Site: http://hdl.handle.net/2297/00065037
• Text Lang: ja
• Data Source:
  • JaLC
  • IRDB
  • CiNii Articles
  • KAKEN