Development of strain evaluation on buried pipeline during earthquakes on the basis of velocity/displacement dependent reaction force

2017 Fiscal Year Final Research Report

• Project/Area Number: 26289144
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Structural engineering/Earthquake engineering/Maintenance management engineering
• Research Institution: Kyoto University
• Principal Investigator: Sawada Sumio 京都大学, 防災研究所, 教授 (70187293)
• Co-Investigator(Kenkyū-buntansha): 古川 愛子 京都大学, 工学研究科, 准教授 (00380585) ; 高橋 良和 京都大学, 工学研究科, 教授 (10283623) ; 鍬田 泰子 神戸大学, 工学研究科, 准教授 (50379335) ; 吉田 望 関東学院大学, 総合研究推進機構, 教授 (50405891) ; 後藤 浩之 京都大学, 防災研究所, 准教授 (70452323) ; 渦岡 良介 京都大学, 防災研究所, 教授 (40333306)
• Research Collaborator: TAKAYA Toshiyasu ; TAKEMOTO Koshiro ; INASE Tomoki
• Project Period (FY): 2014-04-01 – 2018-03-31
• Keywords: 地中埋設管 / 摩擦則 / 光弾性実験 / 個別要素法 / ライフライン

Outline of Final Research Achievements

This research project aimed to study the reaction force between sand ground and buried pipe in order to evaluate the friction acting on the buried pipe during the earthquakes. In particular, it has been observed in past research that the friction depends on drag speed, however the mechanism of the dependence has not been clear. We found the similar phenomenon via both the element test by granular materials consisting of acrylic cylinder and actual test by sand box. The mechanism was clarified by numerical analysis (DEM).

Free Research Field

地震工学