Comparative Study of Stiffness and Strength Behavior of RISHA Type 36 Modular House with and without Isolators

Authors

  • Haryo Mustoko Universitas Pertahanan Republik Indonesia
  • Ida Bagus Gede Putra Budiana Universitas Pertahanan Republik Indonesia
  • Yosafat Aji Pranata Universitas Kristen Maranatha

DOI:

https://doi.org/10.32832/komposit.v10i2.23005

Keywords:

isolator, RISHA type 36, strength, stiffness, Cianjur

Abstract

The reliability assessment of the isolator model, namely rubber base isolation (RBI), has been carried out using an experimental method by conducting tests in the laboratory and continued with analysis of the test results. The purpose of this study is to conduct a dynamic analysis of the time history of the RISHA type 36 residential building to obtain information on the strength and stiffness behavior of the building due to lateral loads (earthquake loads). The scope of the study is the model studied in this report, namely RISHA type 36 m2. The simulation is a house model without isolators and with isolators installed at the base of the column to the foundation, using four earthquake recordings, namely El Centro, Flores, Pacoima Dam, Bucharest, which are scaled in intensity to Cianjur, namely 0.501g. The general conclusion is that the presence of isolators has an impact on reducing internal forces in columns and beams, thus potentially resulting in a stronger structure when an earthquake occurs, so that non-structural damage such as cracks in the walls can be reduced. However, the weakness of the structural system with isolators is that the lateral deformation due to earthquakes is higher than that of structural systems without isolators, but this is not an obstacle considering that the deformation that occurs is still smaller than the permissible deformation limits based on the SNI 1726:2019 code.

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Published

2026-08-04

How to Cite

Mustoko, H., Budiana, I. B. G. P., & Pranata, Y. A. (2026). Comparative Study of Stiffness and Strength Behavior of RISHA Type 36 Modular House with and without Isolators. Jurnal Komposit: Jurnal Ilmu-Ilmu Teknik Sipil, 10(2), 309–318. https://doi.org/10.32832/komposit.v10i2.23005

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