Structural Design of Transmission Pipelines

Abstract

The reliability-based design methodology for the transmission high-pressure gas pipeline is described. Limit state design criterion is introduced for the lifetime risk assessment in the seismic environment, while the maintenance activities including field patrols, periodic inspections and repairs are also taken into consideration. Pipe damages, which are caused by potential defect, corrosion, earthquake ground displacement, settlement and the third party accident, are classified into three major damage modes which include tension/compression, bending and dent with gouge. The assessment is made for the transmission pipeline system which is surrounded with various hazards spatially distributed along the pipeline route.