DOI: 10.36347/sjet

Pages: 254-257

Seismic damage showed that the effect of earthquake damages on urban lifeline system is much larger than other disasters. Shell element model of four nodes was used to simulate the buried pipeline, and the interaction between soil and pipeline was simulated by nonlinear soil spring, seismic response of buried variable-diameter pipeline under strike slip fault was analyzed by using finite element software ADINA. Through studying the influence of concentric and eccentric variable-diameter on seismic response of pipeline, the conclusion was obtained that seismic capacity of concentric variable-diameter pipeline is better than that of eccentric variable-diameter. The results of research provide a certain guiding for the seismic design of buried variable-diameter pipeline across the fault.