Effect of micro-pile, stone column, and encased stone column mitigation on seismic performance of liquefiable ground in the coal-fired power station in Central Java

Liquefaction is a disaster that can damage building infrastructure. This all too common in granular sandy soils. due to the subsidence and instability of soil when subjected shocks such as earthquakes. For this reason, mitigation efforts are needed reduce risk liquefaction. study will compare effectiveness influence micro-pile, stone column, densification methods on soils at Central Java PLTU site reducing impact liquefaction land, which dominated by silty sand types. Each type method has its own advantages each supporting layer some differences results material used even same dimensions. The purpose was assess most suitable use for types area Coal-Fired Power Station Java. model analyzed using OpenSees PL software, considering obtained from 2007 Niigata earthquake PEER NGA-WEST2 analyzing factors displacement reduction excess pore pressure.