chapter  666
15 Pages

6 6 6

A new form of sandwich construction, consisting of two relatively thin steel plates with a concrete infill, has been developed for use in the construction of submerged tube tunnels. The paper summarizes the recent investigations into the potential for this form of construction and outlines the advantages of the system. Interim design rules for rapid sizing of double skin composite sections and the planned model test of a complete tunnel cross-section are also briefly described.