Response Analysis of Buried Continuous or Jointed Pipelines against Earthquake Ground Motion and Liquefaction

2014 Fiscal Year Final Research Report

• Project/Area Number: 24560584
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Structural engineering/Earthquake engineering/Maintenance management engineering
• Research Institution: Kagawa University
• Principal Investigator: NODA Shigeru 香川大学, 工学部, 教授 (80135532)
• Co-Investigator(Kenkyū-buntansha): YOSHIDA Hidenori 香川大学, 工学部, 教授 (80265470) ; SUENAGA Yoshihiro 香川大学, 工学部, 教授 (00284349) ; MIYAMOTO Mitsuhiro 香川大学, 工学部, 助教 (80505694)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 水道管 / 異形管 / 管路継手挙動 / 地震応答解析 / 耐震計算法

Outline of Final Research Achievements

The seismic behaviors of the deformed pipelines are not clear. The effectiveness of the flexible and non-detached mechanical joint is not examined enough. Moreover, the influence of the joint characteristics on the bending moment, stress, strain of pipelines, etc. has not been clarified. Numerical response analyses were carried out for buried pipelines with typical joint characteristics and soil frictions subjected to seismic waves or ground displacements during liquefaction by using ERUAL program. As a result, it was found that the stress concentrations occur near bend pipe section or branched pipe section as the bending moment and the rotation are predominant, and the effectiveness of the flexible and non-detached mechanical joint was verified.

Free Research Field

地震工学