A Study on the Effects of Implementing Base Isolation System for Existing RC Buildings on Soft Soil

Muhammad Farhan Firmansyah, Ahmad Basshofi Habieb, Faimun Faimun

Abstract


The occurrence of earthquakes is frequent in Indonesia due to its position in a highly active tectonic zone. One approach to improve the seismic performance of existing buildings is through the use of base isolation. The concept of using base isolation systems aims to increase the natural period of structures and provide additional damping to reduce seismic forces on the structures. A comparative study was performed between a fixed base system and base isolated system in a 13-story reinforced concrete building located in Surabaya on soft soil. Subsequently, these models were evaluated for their structural response using the nonlinear time history analysis. The results demonstrate that the use of base isolation systems can significantly elongate the building’s natural period, resulting in a significant decrease in the base shear, acceleration response, drift, and the plastic hinge formed. This study proves that this technology is suitable to be applied to existing buildings with satisfactory results.


Keywords


base isolation; lead rubber bearing; seismic protection; seismic response analysis; soft soil

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References


Tim Pusat Studi Gempa Nasional. (2022). Peta Deagregasi Bahaya Gempa Indonesia untuk Perencanaan dan Evaluasi Infrastruktur Tahan Gempa.

Raza, S., Khan, M. K. I., Menegon, S. J., Tsang, H. H., & Wilson, J. L. (2019). Strengthening and repair of reinforced concrete columns by jacketing: State-of-the-art review. In Sustainability (Switzerland) (Vol. 11, Issue 11). MDPI.

https://doi.org/10.3390/su11113208

Imron, I., Piscesa, B., & Zacoeb, A. (2022). Non-Linear Sectional Analysis of Reinforced Concrete Column Strengthened by Reinforced Concrete Jacketing with High-Strength Steel. Journal of Civil Engineering, 37(2), 72.

Habieb, A. B., Valente, M., & Milani, G. (2020). Finite element analyses on a small masonry house prototype retrofitted using frp strips. Journal of Civil Engineering, 35(2).

Habieb, A. B., Valente, M., & Milani, G. (2019). Effectiveness of different base isolation systems for seismic protection: Numerical insights into an existing masonry bell tower. Soil Dynamics and Earthquake Engineering, 125.

https://doi.org/10.1016/j.soildyn.2019.105752

Brandonisio, G., Guidi, L. G., Michelino, D., Sorrentino, P., & de Luca, A. (2023). Seismic retrofit of an existing important building of the 60’s through a hybrid strategy. Procedia Structural Integrity, 44, 1316–1323. https://doi.org/10.1016/j.prostr.2023.01.169

Imran, I., Siringoringo, D. M., & Michael, J. (2021). Seismic performance of reinforced concrete buildings with double concave friction pendulum base isolation system: case study of design by Indonesian code. Structures, 34, 462–478.

https://doi.org/10.1016/j.istruc.2021.07.084

Sheikh, H., van Engelen, N. C., & Ruparathna, R. (2022). A review of base isolation systems with adaptive characteristics. In Structures (Vol. 38, pp. 1542–1555). Elsevier Ltd.

https://doi.org/10.1016/j.istruc.2022.02.067

Shang, J., Tan, P., Zhang, Y., Han, J., & Mi, P. (2021). Seismic isolation design of structure using variable friction pendulum bearings. Soil Dynamics and Earthquake Engineering, 148.

https://doi.org/10.1016/j.soildyn.2021.106855

Makris, N. (2019). Seismic isolation: Early history. In Earthquake Engineering and Structural Dynamics (Vol. 48, Issue 2, pp. 269–283). John Wiley and Sons Ltd. https://doi.org/10.1002/eqe.3124

Kelly, T. E., Trevor, S. E., & Kelly, E. (2001). Base Isolation of Structures : Design Guidelines. www.holmesgroup.com

Badan Standardisasi Nasional. (2019). SNI 1726-2019: Indonesia Seismic Resistance Design Guideline for Buildings and Other Structures (in Indonesian). www.bsn.go.id

Building Seismic Safety Council. (2016). FEMA P-1051: NEHRP Recommended Sismic Provisions Design Examples.

American Society of Civil Engineers. (2017). ASCE 41-17: Seismic Evaluation and Retrofit of Existing Buildings. American Society of Civil Engineers. https://doi.org/10.1061/9780784414859

Fakih, M., Hallal, J., Darwich, H., & Damerji, H. (2021). Effect of lead-rubber bearing isolators in reducing seismic damage for a high-rise building in comparison with normal shear wall system. SDHM Structural Durability and Health Monitoring, 15(3), 247–260. https://doi.org/10.32604/SDHM.2021.015174

American Society of Civil Engineers. (2000). FEMA 356 : Prestandard and Commentary For the Seismic Rehabilitation of Buildings.

Formisano, A., Massimilla, A., di Lorenzo, G., & Landolfo, R. (2020). Seismic retrofit of gravity load designed RC buildings using external steel concentric bracing systems. Engineering Failure Analysis, 111. https://doi.org/10.1016/j.engfailanal.2020.104485




DOI: http://dx.doi.org/10.12962/j20861206.v40i1.19925

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