Analysis of Single Granular Pile With Stiffened Top

Abstract

The scarcity of land with good foundation condition is increasing due to urbanization, newlineindustrialization and environmental constraints. It is demand of the hour to use the land with the newlineweak soil to the maximum with time and cost parameters. Weak soil ground is reinforced with newlineexternal column type structural elements while using Granular Piles . Granular piles help in newlinetransferring the load to deeper strata of lower compressibility and therefore, bearing capacity of newlinethe ground improves and total and differential settlement parameters reduce. newlineA number of analytical and numerical approaches are available to study the response of newlinegranular piles. Also some researchers have reported results of experimental works along with newlinefield studies carried out on use of granular piles. It is reported that there is bulging in the granular newlinepile at top within 2 diameter of length. In this research work, use of granular pile with stiffened newlinetop has been suggested to control or to reduce the bulging. Sharma and Madhav (1999) used the newlineelastic continuum approach to study the settlement analysis of granular piles. The present study newlineuses the same approach to analyze a single granular pile with stiffened top. The results for unstiffened newlinegranular pile were validated by the results of Sharma and Madhav (1999). newlineMindlin s solutions for both horizontal and vertical displacements in soil due to newlinehorizontal and vertical loads within an elastic continuum have been evaluated. The vertical and newlineradial displacements of elements of granular pile are evaluated based on a generalized stressstrain newlinerelationship. Satisfying the compatibility of displacements of the granular pile and soil, newlinesolutions are obtained in terms of shear stress and#964; and radial stress and#963;r at GP- soil interface and pile newlinebase pressure pb. The results are presented in terms of settlement influence factors and radial newlinedisplacement influence factor of GP. newline