APPLICABLE CONDITION OF SIMPLE EQUATION TO PREDICT COEFFICIENT OF VERTICAL EARTH PRESSURE ACTING ON BOX CULVERT

Abstract

We proposed the simple equation in the past to predict the coefficient of vertical earth pressure acting on a box culvert with compressible material installed on its top. This material is aimed to install to reduce the earth pressure acting on the box culvert. Although the simple equation was derived under the simple hypothesis, it was proved to give a reasonable value. On this study, range of applicability and acceptability of this equation is targeted to investigate using data in public shown in the references and FEM analysis. Furthermore, this equation is extended out of limitation to predict earth pressure acting on pipe culvert through a flexibility factor as indicator representing deformability of pipe.