Performance of Station Excavations for la Metro K (Crenshaw/LAX) Line

Charbel Beaino, Youssef M.A. Hashash, Timothy Bernard, Abby Hutter, Maksymilian Jasiak, Jack Lawrence, Patricia Wendy, Michael Pearce, Anne Lemnitzer, Lisa Star, Namasivayam Sathialingam, Edward J. Cording, Thomas D. O'Rourke, Androush Danielians

Research output: Contribution to journalConference articlepeer-review


This paper presents the effects of excavations in Los Angeles on the surrounding ground surface. Three large excavations with varied support systems for stations constructed as part of the K (Crenshaw/LAX) Line Transit Project provide an opportunity to acquire data through an extensive geotechnical investigation and field monitoring program to further our understanding of soil-structure interaction and excavation-induced ground deformations. The ground conditions encountered on site include alluvial deposits of silts, clays, and sands. The data acquired illustrates that ground displacement and wall deflection largely depend on the stiffness of the excavation support system. Support systems with relatively high stiffness are able to successfully limit surface settlement behind excavations. The data shows that heaving caused by unloading governs the soil response given the relatively small lateral support wall deformations. Current empirical models are unable to capture this ground behavior. An update of these empirical relations is needed to represent this behavior in support of the design of future excavations.

Original languageEnglish (US)
Pages (from-to)436-446
Number of pages11
JournalGeotechnical Special Publication
Issue numberGSP 332
StatePublished - 2022
Event2022 GeoCongress: State of the Art and Practice in Geotechnical Engineering - Deep Foundations, Earth Retention, and Underground Construction - Charlotte, United States
Duration: Mar 20 2022Mar 23 2022

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Architecture
  • Building and Construction
  • Geotechnical Engineering and Engineering Geology


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