The Numerical Analysis of Failure Length about Buried Steel Pipeline with Frusta under Static Load and Dynamic Load

A mechanical model of buried pipeline with frusta was established under the research of being collapse and gulch. A finite cell model of buried pipeline was built by using ANSYS finite cell analysis program. The seismic response of the finite cell model under the action of siesmic waves were simulated in different earthquake intensity，and its stress and distortion under static load and dynamic load of collapse and gulch was given, then the length of pipeline failure was given. the important foundation for the earthquake is provided by the simulated results.