Development of Model for Shear-Wave Velocity of Municipal Solid Waste

作者：Zekkos Dimitrios^*; Sahadewa Andhika; Woods Richard D; Stokoe Kenneth H II

来源：Journal of Geotechnical and Geoenvironmental Engineering, 2014, 140(3): 04013030.

DOI：10.1061/(ASCE)GT.1943-5606.0001017

• Microtremor analysis method
• Small-strain shear modulus
• Dynamic properties
• Landfills
• Shear-wave velocity
• Field measurements
• Municipal solid waste
• Multichannel analysis of surface waves

The shear-wave velocity and associated small-strain shear modulus of municipal solid waste (MSW) are important engineering parameters in evaluating the seismic response of MSW landfills as well as in characterizing the waste material and its response to static loads. Semiempirical and empirical models for the shear-wave velocity are presented. The semiempirical model is a more comprehensive model that aims to separately capture the effect of waste density and confining stress on the shear-wave velocity of MSW. It is based on similar models for soils, and its mathematical expression is formulated using data generated from large-scale laboratory studies on reconstituted MSW. The empirical model has a simpler mathematical expression that is a function of depth only. The parameters of both models are derived by calibrating them against a total of 49 in situ shear-wave velocity profiles at 19 MSW landfills, i.e., 13 profiles from four landfills in Michigan generated as part of this study and 36 additional shear-wave velocity profiles from 15 landfills available in the literature. The models can be used to estimate the shear-wave velocity of MSW and to evaluate the seismic response of landfills. Also, in the absence of in situ data, the models can be used at existing MSW landfills for preliminary design purposes. The models are not intended to replace in situ data and do not predict abrupt changes in the shear-wave velocity profile as a result of abrupt changes in waste type and composition.

• 出版日期2014-3-1