Evaluation of 10-Storey Reinforced Concrete Building by Nonlinear Dynamic Analyses Considering Soil-Structure Interaction

Öz

In our country, which is located on an active fault line, population growth and the construction brought by this population growth are increasing rapidly. This is why it is required to consider soil-structure interaction to obtain more realistic result in structural earthquake analyses. However, considering the soil-structure interaction in the calculations sometimes gives positive results and sometimes negative results. Whether the soil is rigid or not also affects this situation. In addition, soil structure interaction starts from the moment the construction starts. Stresses and deformations occurring in a newly constructed building affect the soil on which the building sits, while simultaneously the response of the soil affects the building. Especially for loose soils, also known as soft soils, the extent of this interaction becomes even more important. This study intends to reveal the effect of structure-ground interaction in seismic analyses. Within the scope of the study, three different finite element models were created for a 10-storey reinforced concrete structure as fixed support, sole stratified soil and stratified soil. Nonlinear static and time history analyses were applied to all three models, respectively. The results of the study show that the natural vibration period and base shear force of the building increase in the model where the structure-soil interaction is taken into account, and significant differences occur in the collapse mechanisms of the structure.

Anahtar Kelimeler

• Earthquake Resistant Structures Design
• Pushover Analysis
• Time History Analysis
• Soil-structure Interaction TBEC-2018

Kaynakça

1. Akhoondi, M. R., & Behnamfar, F. (2021). Seismic fragility curves of steel structures including soil-structure interaction and variation of soil parameters. Soil Dynamics and Earthquake Engineering, 143, 106609. https://doi.org/https://doi.org/10.1016/j.soildyn.2021.106609
2. Alemdar, Z. (2004). Yapılarda Deprem Analizi Yapmak için Kullanılan Değişik Hesap Metodları.
3. Anand, V., & Satish Kumar, S. (2021). Evaluation of seismic response of inelastic structures considering soil- structure interaction. Innovative Infrastructure Solutions, 6, 1-19.
4. Argyroudis, S. A., Mitoulis, S. Α., Winter, M. G., Kaynia, A. M., & Safety, S. (2019). Fragility of transport assets exposed to multiple hazards: State-of-the-art review toward infrastructural resilience. Reliability Engineering, 191, 106567.
5. Ateş, Ş., Tonyali, Z., Soyluk, K., & Samberou, A. M. S. (2018). Effectiveness of soil–structure interaction and dynamic characteristics on cable-stayed bridges subjected to multiple support excitation. International Journal of Steel Structures, 18, 554-568.
6. Avcı, Y., & Yazgan, U. (2022). Probabilistic estimation of inelastic displacement demands in soil–structure interaction systems on cohesive soils. Earthquake engineering and structural dynamics, 51(1), 22-43.
7. Ayoub, N., Deü, J.-F., Larbi, W., Pais, J., & Rouleau, L. (2022). Application of the POD method to nonlinear dynamic analysis of reinforced concrete frame structures subjected to earthquakes. Engineering Structures, 270, 114854. https://doi.org/https://doi.org/10.1016/j.engstruct.2022.114854