Abstract:
Due to the increase in population, demand for construction increases and the use of poor
soils becomes absolutely necessary. Settlement and soil bearing capacity play an
important role in the design of foundation. Seismicity of the site is another vital parameter
in design of the foundation for a structure. Therefore, seismic bearing capacity of soil
becomes an important component in the design. In poor soils, ground improvement
techniques are commonly used to improve the soil bearing capacity. If poor soil is
improved by using geo-synthetic, then it becomes feasible to use shallow foundations
instead of deep foundations for the same structure, thus effecting economy.
Through this study, we analysis the seismic bearing capacity of strip footing on reinforced
soil subjected to eccentric inclined load. This approach is based on the analysis proposed
by Binquet and Lee (1975) for a strip footing subjected to static load. Due to eccentric
inclined loading, three types of load distribution acting across the strip footing. We found
out the normal stress and shear stress at any point below the footing by superimposition
of stresses acting on strip footing due to a uniform vertical load, a triangular vertical load
and a horizontal seismic load.
Plots of non-dimensional parameters IZ, JZ and MZ prepared for different cases of seismic
acceleration, eccentricity and inclination angles. Bearing capacity of strip footing with
different layers of reinforcing ties on earth bed is found out.
