C39D, meeting Wednesday, October 23, 2024 from 8-10 AM, will include the following presentation:

Seismic Design for Underground Transmission System

Wei Zheng, Kiewit, USA

Abstract: Seismic design of underground transmission systems is critical for ensuring the resilience and reliability of essential infrastructures during earthquake events. However, there are no well-established guidelines on seismic design of underground transmission systems. This presentation will describe the seismic design of entire electrical power system and identify major seismic hazards and design challenges for the underground transmission systems. Underground cable performance during the Christchurch Earthquakes will be reviewed to identify key considerations in seismic design. Seismic design guidelines for water pipelines will be reviewed to explore how design earthquake is determined based on water pipeline function classes and levels of redundancy. Finally, a design process is recommended for a safe and resilient seismic design of underground transmission system.