నైరూప్య

A Case Study on Static Stability Analysis of Retaining Wall at Dewarwadi

Vijayakumar Sureban , Subhash A. B., Sumant T. P., Venkatesh M.B., Yallappa L. K

A semi-gravity wall of PCC is constructed to retain the silty gravel backfill in Dewarwadi village near Vaijanath temple. The soil samples at the top and bottom of the wall at three sections are collected and tested. Then the static stability analysis of the wall is carried out. It is found that the average factors of safety with respect to overturning, sliding and bearing failure are 4.56, 9.62 and 3.1 respectively, which shows wall is safe as required factors of safety are 2, 2 and 3 respectively. But, these are too higher, which indicates the oversized wall is constructed. Hence, for safety as well as the economy the actual wall should have been of the dimensions; Stem top width=0.2 m, Stem bottom width=1.1 m, Width of base slab= 2.72 m, Thickness of base slab=0.68 m, Heel projection=0.62 m and Toe projection =1 m. The % saving in materials would be 41.5 % compared to the existing wall. Also, for the proposed wall the factors of safety with respect to overturning, sliding and bearing failure are 3.684, 6.970 and 5.14.