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BRAY, RATHJE, AUGELLO AND MERRY D Seismic Design for Lined Solid-Waste Landfills <br />219GEOSYNTHETICS INTERNATIONAL S 1998, VOL. 5, NOS. 1-2 <br />Figure 10. Seismic displacement differences (decoupled minus coupled and rigid <br />minus coupled) using rigid and decoupled/fully coupled distributed mass sliding block <br />analyses: (a)Ts /Tm = 1.0; (b)Ts /Tm = 4.0. <br />0.0 0.2 0.4 0.6 0.8 1.0 <br />--- 7 5 0 <br />--- 5 0 0 <br />--- 2 5 0 <br />0 <br />250 <br />500 <br />750 <br />1000 <br />--- 5 0 0 <br />--- 2 5 0 <br />0 <br />250 <br />500 <br />750 <br />1000 <br />Displacement difference (mm) Displacement difference (mm) <br />ky /kmax <br />Damping 15% <br />Damping 15% <br />Decoupled-coupled <br />Rigid-coupled <br />Ts /Tm =1.0 <br />Ts /Tm =4.0 <br />Decoupled-coupled <br />Rigid-coupled <br />(a) <br />(b) <br />of earthquake-induced displacement can be made given an estimate of the intensity, <br />MHA, frequency content,Tm , and duration,D5-95 , of the design rock motion, and the <br />dynamic response characteristics,Ts , and strength,ky , of the landfill. The maximum