Shoring For the Hollywood Highland Project Hollywood, California

摘要

The Hollywood & Highland Project has opened with great fanfare in late 2001, and has hosted the Academy Awards ceremony in 2002, as it will in future years. While the permanent structure for this almost $600 million project is impressive, what is no longer seen is the temporary shoring system that was installed to support the greater than 80 foot deep excavation at the site. The shoring system presented many design challenges including the support of an existing high-rise building on one side, smaller structures on other sides (including the historic Grauman's Chinese Theater), and the existing Metro Red Line subway station at the southeast corner of the site. To accomplish the shoring for the project, almost every type of commonly used shoring system was applied, including cantilevered soldier piles, soldier piles with post-grouted tied-back anchors, soldier piles with rakers, and soldier piles used both for shoring and for underpinning. The shoring systems were reviewed under the jurisdictions of the City of Los Angeles, the California Department of Transportation (Caltrans), and the Los Angeles County Metropolitan Transit Authority (MTA), which meant satisfaction of sometimes different regulatory requirements and design philosophies. As part of the shoring installation, an extensive monitoring program was utilized to report movement during construction, including monitoring of the performance of adjacent structures and subway station and tunnels.