Technical session 2e: Marine and transportation geotechnical engineering

摘要

Knowledge on the behaviour of soils under cyclic loading is an essential part of the foundation design of infrastructure and offshore structures. This includes structures subjected to wave loading, wind, earthquake loading, and traffic and machine vibrations. Structures subjected to wave loading are fixed offshore oil and gas platforms, near shore liquid natural gas (LNG) terminals, anchors for floating structures, harbours, breakwaters, storm surge barriers, etc. Structures subjected to wind loading are wind power structures, bridges and tall buildings. Earthquake loading will influence slope stability, buildings and other structures, both offshore and on land. Traffic and machine vibrations will mainly influence the behaviour of structures and their serviceability. Wave and wind loading will normally have load periods of the order of 10s or more, whereas earthquake, traffic and machine vibration will have lower periods of about 1s or less. The fundamental behaviour of soils is independent of the load period, and the general principles apply independent of period. The numerical values, however, are rate dependant and will be a function of the load period.