SEISMIC BEHAVIOUR OF MUNICIPAL SOLID WASTE (MSW) LANDFILLS

摘要

A pioneering study into the seismic behaviour of municipal solid waste (MSW) landfill has been carried out by dynamic centrifuge testing. The study investigates the amplification characteristics of a MSW landfill. This paper presents experimental results from dynamic centrifuge testing of a MSW landfill model and compares the experimental results with one-dimensional numerical predictions. The landfill modelled was a single clay liner MSW landfill with 1H:1V side slope founded on a sand foundation. The MSW was modelled by mechanically representative model waste and the clay liner by a strip of normally consolidated E-grade kaolin clay. The accelerations experienced by the clay liner, the top surface of sand and the model waste, when the foundation soil was subjected to seven model earthquakes of varying frequency and intensity, were recorded and have been analysed in this paper. Results from this study provide valuable experimental results to show that a simplified site response chart can be used to obtain the amplification of accelerations through MSW landfills.