Behaviour of segmental lined tunnel on overburden removal

A dual carriageway underpass was constructed directly above the operational 4.9 metre ID LRT tunnels in Kuala Lumpur, Malaysia. This article outlines the design considerations of overburden relief on the structural integrity, describes the relationship of predicted design movements based on finite element analysis and actual measurements. It also outlines the monitoring systems and provides a technical discussion on the possible causes of the displacements.
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