Abstract
The damage caused by large earthquakes is not only due to structures but also due to the soil failure, where the dynamic response varies considerably from the fixed base state because of the interaction between the ground and the structure. The main objective of this paper is to study the effect of the infinitely extended soil on the dynamic response of the structure. A three-dimensional dynamic analysis of reinforced concrete buildingconsidering the effect of soil-structure interaction is performed. Building with a different number of stories rest on soil with various characteristics have been taken into consideration. For simulation of wave propagation due to far-field effects, coupled finite-infinite elements is presented for modeling the soil. The infinite boundary provides a powerful tool for dealing with wave propagation problems. The analysis is performed through a finite element method which is implemented in ABAQUS program. An earthquake load is applied in the horizontal direction with various boundary conditions such as; free, and infinite boundary. The effect of boundary on the dynamic response of structure are investigated. The significant difference in dynamic response is observed when infinite boundaries are used, especially in the case of soft soil, where the existence of infinite elements leads to absorption of energy and thus greatly reduce the lateral displacement of the structure.
Highlights
Earthquake is the most disastrous and unpredictable phenomenon of nature
The analysis is performed on structure with 10 and 15 story with three different types of soil to study the effect of soil-structure interaction and height of structure on the amplitude of displacement of the soil-foundation-structure system
The surrounding field of the domain has been considered by using infinite elements
Summary
Earthquake is the most disastrous and unpredictable phenomenon of nature. The total destruction of buildings from earthquake leads to the need for investigation to find reasons. The analysis of structures subjected to earthquake, it is usually assumed that the base of structure is fixed to simplify the mathematical problem but, in some cases, buildings construct in areas with geotechnical conditions unsuitable for earthquakes. This assumption leads to gross error in assessment of overall response under dynamic loads [4]. In order to simulate three-dimensional finite element model, ABAQUS program was used for whole project including the building structure and the local soil.
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
