Abstract
Abstract The paper presents the method for design of primary roof support for the large todoidal cavern constructed to house the Sydney Opera House parking station. The cavern was constructed with 7 m of rock cover beneath Sydney's Royal Botanic Gardens. Design of rock reinforcement using a combination of fully grouted rock dowels and Macalloy bars was based on control of horizontal shear movement along bedding features in the roof. A combination of linear-arch-type analyses and non-linear jointed finite-element analyses were used in the design study, together with an analysis of the shear resistance offered by fully grouted bolts under shear deformation.
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