Seismic Response of Circular Arch Span Pipeline

摘要

Damage and disruption of oil and gas pipelines caused by an earthquake may have severe effects on civil life since it may lead to loss of vital services and transportation systems.The model of non-hinge circular arch steel pipeline fixed restriction in the end is considered under the load of internal pressure and temperature.The natural frequency is analyzed under the different internal pressure and temperature by 3-D dynamic FEM analyses.Three kinds of seismic excitations are considered in dynamic analysis of stress and displacement changed with time.The span,the height of the pipe,the radius of pipe and wall thickness is considered in seismic response.The results show that the span is important in seismic response.Zhang Hui-min