Animal Undermining of Naval Seafloor Installations
NAVAL CIVIL ENGINEERING LAB PORT HUENEME CA PORT HUENEME United States
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In-situ foundation performance experiments are being conducted by Naval Civil Engineering Laboratory NCEL ocean engineers by placing 4-foot diameter cylindrical concrete footings for undersea structures on the ocean floor in 120 feet of water. During periodic monitoring of footing performance, excessive settlement was noted and the resulting inspection of the footings by divers showed several animal burrows under the footings. As a result of this finding, a field study was initiated to investigate and to identify burrowing animals which may undermine the footings of Navy undersea structures. A control method which will prevent animals from burrowing underneath objects placed on the ocean bottoms was investigated. A limited literature search was also conducted to determine what type of burrowing animals may be present in the vicinity of the Pitas Point Test site.
- Structural Engineering and Building Technology
- Logistics, Military Facilities and Supplies