Content area
Full Text
Abstract-In clayey soil region of Malwa (M.P.), normally footing rest on yellow soil strata having low bearing capacity. Environmental changes have great impact on the behavior and strength parameter of the yellow soil. skirted footing in which vertical walls surrounds sides of the soil mass beneath the footing, is one of the recognized bearing capacity improvement technique. Construction of vertical skirts at the base of the footing, confining the underlying soil, generates a soil resistance on skirt sides that helps the footing to resist sliding. Biangle shaped skirt in which vertical walls surrounds two adjacent sides of the footing is a special case of skirted footing. A model study has been performed to investigate the behavior of Bi-angle shape skirted footing resting on yellow soil and subjected to two way eccentric load. The study helps in evaluating performance of skirted footing. The differential settlement of extreme corners of the footing is affected considerably due to presence of skirts. Skirts have been found to be helpful in reducing differential settlement due to eccentric loading.
Index Terms -Bi-angle shape skirted footing, model footing, two way eccentric load, bearing capacity, no tilt condition.
I. INTRODUCTION
Industrial machines foundations, footing of retaining walls, abutments, and portal framed buildings are not only subjected to vertical or inclined loads but also to moments. Moments on the foundation base are mainly caused by horizontal forces acting on the structure. Horizontal forces are the resultant of earth pressure, wind pressure, seismic force, and water hydrostatic pressure etc. These forces and moments can be replaced by two way eccentric load on the footing. The general objective of this work is to study the behavior of Bi angle skirted footing under the effect of eccentric loads. The work comprises of an experimental investigation. The experimental work has been directed to study the effect of variation of load , load eccentricity, and skirt lengths. Experimental study on the Performance of skirted strip footing subjected to eccentric inclined load by Nasser M. saleh et.al (2008). Al-Aghbari and Zein (2004, 2006) carried out tests on strip and circular footing models resting on sand. Mahiyar and Patel (2000), Martin(2001), EL Sawwaf and Nazer (2005), have noticed a significant improvement in the footing response due to the ring...