ABSTRACT

This chapter examines the properties of the low bearing capacity and highly compressible subsoil, together with an analysis of the geotechnical mechanisms which may occur as a result of filling or excavation work in this type of soil. The highly compressible subsoil occurs in large parts of the Western and Northern Netherlands. The behaviour of soil layers of low bearing capacity and high compressibility for the building of earth structures is so important for the design and construction of these structures. A distinction must be made between dams which have to cope with a constant difference in the water level, such as polder dykes and canal banks, and dams exposed to varying water levels, such as sea and river dykes. The loads and load combinations are of particular importance in the design. The slopes of a road or railway embankment are covered with topsoil, with grass or other plants sown on it; this facing is intended to prevent erosion.