Cantilever and Finishing Bridge for BAM

TWD was requested by BAM International to provide the detailed design of the Cantilever Bridge (CLB) and Finishing Bridge (FB) for their LNG project in Papua New Guinea. The CLB is used to build a permanent jetty of 2451m built on a hundred bents of raker piles with headstocks. The CLB is launched forward, then supported on temporary spud units while new foundation piles for the next head stock are driven. After completion of the new head stock the spud units are retracted, roller supports are placed and the CLB is launched further. On top of the CLB a rail track with one main and two gantry cranes is installed. 

The basic functions of the FB are placing platforms on top of the jetty headstocks (used for finishing works) and placing supports for pipe racks. Platforms were designed to provide access to the underside of the headstocks for finishing works. Main design items include the finishing bridge main frame, splice connections, roller supports, locking pins and all of the removable platforms. The additional design items include the scissor-type access platforms, transfer stand, and roller guiding frame / winch line pulling hook.