Respon Struktur Bangunan Terhadap Perbedaan Kapasitas Kolom Pada Antar Tingkat Dan Pengaruh Gaya Gempa

Fazrial Ridha Ghifari; Liliana; Frieda

Authors

Fazrial Ridha Ghifari Universitas Palangka Raya Author
Liliana Universitas Palangka Raya Author
Frieda Universitas Palangka Raya Author

Keywords:

kapasitas kolom, struktur bangunan, gaya gempa, respon dinamik

Abstract

The difference in column capacity between levels in multi-story buildings can significantly affect the overall structural behavior in response to seismic loads. This study aims to analyze the structural response of a building due to different column capacities at each floor to earthquake forces. The object of the study is the High Prosecutor’s Office Building of Central Kalimantan Province, which features columns with varying dimensions and reinforcement quantities on each level. The analysis was conducted using the dynamic spectrum response method based on SNI 1726:2019, focusing on column behavior and its impact on the structure. The results of the study indicate that differences in column capacity lead to an imbalance in force distribution, particularly in the lower-level columns, which bear greater loads. Columns with lower capacity on the upper floors reduce vertical stiffness, which triggers stress concentrations at the connections. Consequently, there is an increase in inter-level drift that could exceed permissible limits. Additionally, structures with uneven column capacity tend to violate the strong column-weak beam principle, resulting in a higher risk of damage. Therefore, uniform or increasing column capacity downwards is necessary to maintain structural stability.

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