Framework for Analyzing Cast Iron Water Main Fractures due to Moisture-Induced Soil Expansion
作者: Piyius Raj SinghVincente PericoliAmit KanvindeSriram Narasimhan
作者单位: 1Univ. of Waterloo
2Univ. of California
刊名: Journal of Pipeline Systems Engineering and Practice, 2020, Vol.11 (3)
来源数据库: The American Society of Civil Engineers Journal
DOI: 10.1061/(ASCE)PS.1949-1204.0000460
关键词: Pipe-soil interactionMoisture induced soil expansionAmerican Water Works Association (AWWA) corrosion modelCast iron
原始语种摘要: AbstractCast iron pipe break rates in North American water distribution systems have increased significantly in the last six years (a 43% increase with respect to 2012). Of the numerous mechanisms that are responsible for these breaks, pipe fracture data from the City of Sacramento indicates that corrosion induced damage followed by pipe flexure due to moisture-induced soil expansion is one of the dominant mechanisms. This mechanism results in full-circle breaks in which fracture occurs transverse to the pipe axis. This paper presents an analytical model to predict such fractures, given a range of parameters that describe pipe configuration, soil conditions, and triggering factors, such as soil saturation, that leads to expansion. The model is based on (1) classical solutions for beams on...
全文获取路径: ASCE 

  • pipe 
  • expansion 膨胀
  • corrosion 腐蚀
  • fracture 断口
  • induced 感应的
  • simulate 模拟
  • American 美国的
  • supported 支承的
  • validation 证实
  • parameters 参数