Approximations of Head and Flow Distributions in Liquid Filled Piping Networks Subject to Seismic Excitation Using a Steady Oscillatory Flow Model

摘要

The purpose of this study was to develop an economical method of analysis of piping networks subject to a seismic disturbance. A one-dimensional steady oscillatory method was employed and a powerful tool (a computer program for analyzing piping networks subject to steady oscillatory excitations) was developed for piping designers who wish to design pipelines for earthquake zones. In addition, a model was developed to simulate the geometrical excitation effects of the following piping network junctions: (1) dead-end, (2) 90 degree elbow, (3) tee, and (4) orifice. This model was verified for the dead-end, elbow, and tee connections by comparison with a method of characteristics model. This method of characteristics model was in turn verified by experimental data and energy analysis at resonance.