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The effectiveness of pervious concrete column remediation in homogeneous and sandwiched soil strata for mitigating liquefaction-induced lateral spreading is being investigated in this study. The seismic performance of pervious concrete column improved ground is compared with stone column improved ground. The efficacy of pervious concrete column on three types of soil strata in mitigating liquefaction along with the parameters influencing ground lateral deformation such as thickness of sandwiched liquefiable soil layer, permeability of surrounding soil, ground surface inclination, peak ground acceleration and surcharge load are reported. Three-dimensional nonlinear finite element software OpenSeesPL is used to analyze remediated ground with stone column and pervious concrete column inclusions. Liquefaction-induced lateral deformation is found to be lesser in pervious concrete column improved ground in comparison with stone column improved ground. The lateral deformation of pervious concrete column remediated ground is found to be independent of surrounding soil permeability. The pervious concrete column inclusion is found to be a better alternative to stone column in mitigating liquefaction in susceptible soils like loose sand, medium-dense sand, silt strata and sandwiched liquefiable soil deposits.

Liquefaction-Induced Lateral Spreading Mitigation Using Pervious Concrete Column Inclusion in Sloping Strata