General Quasi-Static Seismic Analysis of Buried Straight Piping Systems

摘要

To assist the seismic analysis and design of buried pipeline in a seismic environment, a comprehensive non-linear quasi-static analysis model was developed. The analysis includes non-linear elasto-plastic behavior of soil and joint springs. A general computer program was devised to accept most influential parameters. This program, capable of handling continuous as well segmented pipelines, was tested with various physical, geological and seismological parameters. The physical parameters are pipe material elasticity, diameter and thickness, segment length, joint spring constant and maximum strength (yield displacement), soil spring constant and slippage strength (slippage displacement). The geological and seismological parameters include wave propagation speeds and earthquake ground displacement time history. A User's Manual for the computer program is provided.