STRUCTURAL BEHAVIOUR OF SUBMERGED FLOATING TUNNELS WITH DIFFERENT CABLE CONFIGURATIONS UNDER ENVIRONMENTAL LOADING
ABSTRACT: This paper presented
the structural behaviour of a Submerged Floating Tunnel (SFT) for the Seribu
Archipelago crossing under environmental loadings using the different cable
configurations. The SFT is a tubular structure submerged in the water at a
fixed depth, which features several advantages from the structural, economic
and environmental impact points of view. In particular, it seems to be a
suitable system for waterway crossings in seismicity zones, because the
interaction with the water provides additional damping and inertia to the
structural motion. In order to evaluate the SFT structural response to seismic events,
response spectrum analyses were carried
out considering for a ground multi-support excitation. The different cable system
configuration was considered in this investigation. The static and dynamic analyses were carried out to find out the best
configuration among them. Although they
could not lead to definitive conclusions, the results gave useful
indications about the seismic response of Submerged Floating Tunnels. Base on
analyses, the SFT with two cable diagonals perpendicular with SFT’s body
(called Type C) showed the good results.
Author: Endah Wahyuni, I Gusti Putu Raka and Ery
Budiman
Journal Code: jptsipilgg110018
