earthquake behavior of under-ground pipeline network
Praveen C.Mathew,Ramki Vasagan.K
Published in International Journal of Advanced Research in Civil,Structural,Environmental and Infrastructure Engineering and Developing
ISSN: 2320-723X Impact Factor:1.7 Volume:3 Issue:1 Year: 03 March,2017 Pages:333-339
Abstract
In this study, a new method is proposed to evaluate the seismic behavior of buried jointed water pipeline networks subjected to wave propagation. First, using finite element method and solid elements, different kinds of currently used connections in the network are modeled, and their nonlinear behavior in all directions is obtained. Second, a 950-meter long network consisting of ductile iron pipes segments of 6-meter length and springs characterizing the connections, are modeled using beam elements. Three-component displacement record of the Tabas earthquake is applied to the network considering the time lag between support inputs, and the nonlinear soil- pipe interaction. The record is applied once in North-South direction and once in East-West direction with different wave propagation velocities. Results of interest such as stress values and rotations at various points of the network are then obtained, and critical points are introduced in each direction. Results show that the points other than the critical ones at the network intersections remain elastic.
Kewords
Finite Element Method, Ductile Iron Connections, Three Component Displacement Records, Nonlinear Soil-Pipe Interaction.
Reference
. [1] O Rourke, M.J. and Liu, X. (1999) Response of Buried Pipelines Subjected to Earthquake Effect. MCEER Report, MCEER-99-MN03|4/29/1999|272 pages, University at Buffalo, Buffalo, NY 14260-4300. . [2] Takada, S., Hassani, N. and Rasti, R. (2003) Artificial Neural Network (ANN) Modeling for Earthquake Damage De- tection in Water Distribution System. Proceedings of the 2003 Pacific Conference on Earthquake Engineering [Elec- tronic Resource], 13-15 February 2003, Christchurch, 9 p. . [3] Jayaram, N. and Baker, J.W. (2009) Efficient Sampling and Data Reduction Techniques for Probabilistic Seismic Life- line Risk Assessment. Earthquake Engineering and Structural Dynamics, 39, 1109-1131. . [4] Boorboor, A. (2013) Analysis of Seismic Behavior of Water Distribution Jointed Pipes Network Regarding Nonlinear Behavior of Connections. Ms. Dissertation Submitted to the International Institute of Earthquake Engineering and Seismology, Tehran. . [5] American Society of Civil Engineers (ASCE) (1984) Guidelines for the Seismic Design of Oil and Gas Pipeline Sys- tems, Committee on Gas and Liquid Fuel Lifeline, ASCE,
