Impact of transmitting
boundaries on seismic behavior of building on slope under soil-structure interaction
Kumar Vijay, Kumar Ashish, Kumar Madan, Kumar Mithilesh and Vikas Kumar
Disaster Advances; Vol. 17(5); 9-23;
doi: https://doi.org/10.25303/175da09023; (2024)
Abstract
The occurrence of seismic excitation across hilly region caused accumulation of
stresses which resulted in failure of slope and structure. Recently, Syria and Turkey
found failures of geostructures and slopes due to multiple earthquakes. This study
investigates suitable height of building and slope stability considering soil-structure
interaction (SSI). For this, building with varying heights were built on slopes.
The finite element numerical modeling for SSI has been analyzed in ABAQUS with three
transmitting boundaries namely viscous, Kelvin and infinite element boundaries.
The investigation into the effects of boundary conditions on varying peak ground
acceleration (PGA), amplification factor and stresses in a slope-building system
indicates that horizontal displacement of slope surface increases proportionally
with height and inclinations.
The findings emphasize a noteworthy decrease in response ranging from 45-56% at
waist and 50-60% at crest in comparison to toe of slope when infinite boundaries
are considered. Additionally, flexible base condition in the building system leads
to 75% increase in the duration of vibration, attributed to height of structures
in hilly areas dependent on slope characteristics. The study recommends mid-rise
building height (G+5) as an optimal choice for construction in high-inclination
slopes of the Himalayan hills.
