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Nonlinear Dynamic Analysis of RC Structures and Soil Structure Interaction Effects

Description: 

In seismically prone areas, when a severe earthquake occurs, it can cause significant damage to structures, leading to economic losses and a threat to human safety. Therefore, increasing the reliability and resilience of structures against seismic events is essential to reduce the destructive effects. One way to achieve this goal is through advanced analysis methods such as nonlinear dynamic analysis. This analysis allows for a more realistic assessment of the behavior of structures by considering the nonlinearity of materials, large deformations, and damage mechanisms that occur under severe earthquake forces. As well as the dynamic interactions between structural components and underlying soil layers, known as soil-structure interaction (SSI), which affect the overall seismic performance and safety of structures. The combination of these methods ensures a comprehensive understanding of how structures behave during earthquakes, leading to improved design strategies.

In this analysis, modeling using numerical methods has been performed on RC frames to evaluate their dynamic response under seismic loading. The results were compared using different values of Rayleigh damping and ductile and brittle modeling of failures to determine the most efficient results in terms of peak ground acceleration (PGA) and peak ground velocity (PGV) over time. Next, we will evaluate the soil-structure interaction (SSI), which plays an important role in the overall response of buildings, using numerical methods and laboratory tests. The flexibility and deformation of the soil can affect the movement of the structure and lead to changes in its dynamic behavior. By integrating SSI with nonlinear dynamic analysis and time history, we aim to provide a more realistic and comprehensive assessment of the structure's performance during seismic events. This combined approach will help develop more accurate design recommendations for earthquake-resistant buildings, ultimately increasing their reliability and resilience.

Session: Why Ignore the Structure? Soil-structure Interaction and Site Response at Local and Regional Scales [Poster]

Type: Poster

Date: 4/17/2025

Presentation Time: 08:00 AM (local time)

Presenting Author: Mahsa

Student Presenter: Yes

Invited Presentation: 

Poster Number: 8

Authors