OverviewTarget participants: ICE Members
The purpose of this presentation is to find out how Tony Gee was engaged in the production of an alternative design for the special span segmental box girder bridge.
Tony Gee was engaged by the main contractor, Acre Works, to produce an Alternative Design for a special span segmental box girder bridge forming part of Package CB1 on the DASH Expressway project in the suburbs of KL. The structure is a four-span prestressed concrete twin box girder bridge with a maximum span of 82.3m and maximum height of 32.8m above ground level necessary to clear not only a grade separated interchange but also an existing MRT viaduct below.
The segmental structure was constructed in-situ by the balanced cantilever method using form travelers. The alternative proposal demonstrated a material saving of up to 30% and reduced the number of piles from 37 in the conforming design to 24. The cross-section of the viaduct was also re-engineered for ease of form traveler erection and reinforcement by changing the original tapered web to vertical.