Design challenges – Station steel roof for Boon Lay Extension in Singapore

Boon Lay Extension is an extension of the existing east-west railway line to the industrial estate in Singapore. It includes two elevated stations. The paper describes the design challenges of the station steel roof that is formed of single-layer gridshell structures. It covers the structural scheme, macro-buckling analysis, finite-element analysis for the connections and vibration isolation. These considerations have not been well documented. (A)