Numerical Modeling of Foot Plate Foundation Located on Peat Soil

Abstract

Peat soil can be found in several place in Indonesia, one of them in Kalimantan. Peat soils with its characteristic have highest compressibility among than other soil types. The experimental modeling of foot plate foundations in peat areas was too difficult to be performed. Numerical modeling can be one of the efforts to determine the optimum results with a relatively more economical cost. This study modeled the foot plate foundation structure where located on peatland with different elevation of peat soil into the elevation of the foundation. Peat soil elevation had been determined successively below the foundation elevation, the same level of the foundation elevation and above the foundation elevation. All geometric and material data had been obtained from field data. The analysis performed in static analysis with in 2D shell idealization by utilizing Abaqus software version 6.14-2. Numerical results had been also compared with analytic results. The result of the research showed that there is a match between numerical result and analytic result. The stress occurred at the base of the foundation for each peat soil elevation difference correspondently 16,53 MPa, 9.34 MPa and 3.59 MPa. The lowest stresses occurred when the peat soil elevation located above the foundation elevation (78.28%).