Container Off-Loading and Transfer System (COTS). Advanced Development Tests of Elevated Causeway System. Volume III. Elevated Causeway Structure.

摘要

This report documents the conversion of the U.S. Navy's floating causeway into an elevated structure. The construction of elevated causeway units for development tests is described. Design and testing of modular exterior and interior spudwells for the elevated causeway units is reported. The development and test of a device for connecting floating causeway sections side-to-side to make an expanded platform, floating or elevated, is related. The connection of the causeway structure to supporting piles is examined with respect to manpower and time constraints. These structural features and components were integrated to assist in the construction and testing of an elevated causeway structure. Analyses and tests of the elevated structure to ascertain the operating capabilities and limitations are described. A structural analysis technique was formulated for the unique modular causeway structure. To compute stresses due to single and combination loads, graphical solutions are presented. A failure analysis of the structure was made to determine operational safety factors. Structural aspects of an elevated crane platform and the impact of the 40-foot (12.2-m) container on the elevated causeway system are discussed. (Author)