KWA SALLY FAHMI, Post-graduate student of the Department “Civil Engineering”, Peter the Great St. Petersburg Polytechnic University, Saint-Petersburg, Russia
EVGENY KOLOSOV, Senior Lecturer, Peter the Great St. Petersburg Polytechnic University, Saint-Petersburg, Russia
Abstract: The behaviour of the fully saturated clay soil reinforced by stone columns subjected to cyclic load is of considerable very important in the design of railway subgrades , these soft clay soil are characterized by high settlement and low bearing capacity because of the excess pore pressure due to heavy freight trains significantly reduces the bearing capacity which causes serious problems , the used of stone column for reinforced the saturated clay soil will reduced the settlement and increase the bearing capacity [18, 19]. The purpose of the current is cases study of foundation soil improvement by reduced the settlement for a building structure using stone columns system with and without geogrid encasement under cyclic load with rate of loading 5 mm/sec.
Key words: cyclic loading, laboratory tests, settlement, stone columns, clay soil, deformation.
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