Abstract
In the summer of 2014 Strukton Immersion Projects has placed the foundation caissons of the Venice flood barrier in the Chioggia inlet to the Venice Lagoon. The caissons were loaded by currents and waves during placement. Before the placement, physical model tests were performed in a wave-current basin to optimize the placement procedure, and to determine the line force and pontoon motions. This paper describes the model setup, tests that were performed, the results and the implications for the placement procedure. Also the experiences during actual placement are discussed.
Highlights
In the summer of 2014 Strukton Immersion Projects (SImP) has placed the foundation caissons of the Venice flood barrier in the Chioggia inlet, see Figure 1
In total over 1500 m of gates will be placed in the three inlets to the Venice Lagoon
Sway, and surge motions are dominant, i.e. the motions of the pontoon in the horizontal plane, that are not influenced by the caisson
Summary
In the summer of 2014 Strukton Immersion Projects (SImP) has placed the foundation caissons of the Venice flood barrier in the Chioggia inlet, see Figure 1. The Chioggia inlet is one of three tidal inlets to the Venice Lagoon, which can be closed by the flood barrier. The caissons can be loaded by currents and waves during placement. The immersion process of the caissons was studied in a physical model at Deltares. The barrier consists of 20 m wide steel gates that are resting on the sea floor in large concrete caissons. When the barrier should be closed, air is pumped in the gates. The gates float up and close the tidal inlets. In total over 1500 m of gates will be placed in the three inlets to the Venice Lagoon
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