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Los Angeles Metro is constructing a light rail corridor beneath Downtown Los Angeles - The Regional Connector Transit Corridor (RCTC). To provide operational flexibility, RCTC required a track crossover adjacent to one of the stations. Right of way constraints required the crossover be constructed at relatively shallow depth using Sequential Excavation Methods (SEM), resulting in what is believed to be the largest mined cross section in Los Angeles.
Challenges faced for the SEM cavern design and construction included strict limits for tunnelling induced displacements in surrounding structures and high seismic design loads with 2,500 year return periods. This presentation describes the design approach of the SEM cavern, with an emphasis on the seismic analysis, as well as the actual conditions faced during construction.
The talk will outline the necessary qualifications for becoming a Fellow of ICE. Attendees are encouraged to ask questions at the end of the presentation.
ICE invites you to our online Knowledge Café. This event is designed for our regional and International members, as well as those who were unable to attend our first Knowledge Café event in London.
PHEW trip on the Union Canal from Linlithgow to The Falkirk Wheel, to mark the bicentenary of the opening of the Canal. The day trip will include several of the significant engineering structures on the canal.