SEISMIC SOIL-STRUCTURE INTERACTION EFFECTS ON A HIGH RISE RC BUILDING
Journal
2nd Croatian Conference on Earthquake Engineering ‒ 2CroCEE
Date Issued
2023-03-24
Author(s)
Bojadjiev, Jordan
Nikolovski, Done
DOI
10.5592/CO/2CroCEE.2023.62
Abstract
Soil-structure interaction (SSI) is for sure one of the most neglected effects in seismic structural design practice.
However, many researchers showed that it might notably affect seismic performance results. In fact, the stateof-
the-art seismic codes are encouraging including SSI for structures with considerable p-Δ effects and mid to
high-rise buildings. In the current research, seismic soil-structure interaction analysis is made for a selected midrise
reinforced concrete building with several different SSI techniques (models). In order to quantify the effect
of SSI on the overall response of the selected structure, the global seismic response within a frame of forcedisplacement
relationship for different earthquake intensities, different SSI mathematical models and different
soil categories is presented. Comparing the outcome of the performed analysis it was observed that the structural
performance was affected significantly by the foundation system and contributes considerably to the overall
structural performance of the selected structure in specific soil conditions. As the results indicate, more codebased
recommendations are required for the improvement of the SSI structural seismic design, especially in soft
soil cases, where the soil-structure interaction might significantly affect the seismic response of buildings.
However, many researchers showed that it might notably affect seismic performance results. In fact, the stateof-
the-art seismic codes are encouraging including SSI for structures with considerable p-Δ effects and mid to
high-rise buildings. In the current research, seismic soil-structure interaction analysis is made for a selected midrise
reinforced concrete building with several different SSI techniques (models). In order to quantify the effect
of SSI on the overall response of the selected structure, the global seismic response within a frame of forcedisplacement
relationship for different earthquake intensities, different SSI mathematical models and different
soil categories is presented. Comparing the outcome of the performed analysis it was observed that the structural
performance was affected significantly by the foundation system and contributes considerably to the overall
structural performance of the selected structure in specific soil conditions. As the results indicate, more codebased
recommendations are required for the improvement of the SSI structural seismic design, especially in soft
soil cases, where the soil-structure interaction might significantly affect the seismic response of buildings.
Subjects
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