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Iman Satyarno
Universitas Gadjah Mada
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Materials Science & Nanotechnology Physics Social Sciences Transportation Other

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Structural Performance of Circular Hollow Steel Damper with Fins and Gaps Aritonang, Tobok S. M.; Satyarno, Iman; Awaludin, Ali; Setiawan, Angga F.
Civil Engineering Journal Vol. 12 No. 2 (2026): February
Publisher : Salehan Institute of Higher Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28991/CEJ-2026-012-02-03

Abstract

Prior studies have shown that fin reinforcement on a circular hollow steel damper (CHSD) could mitigate buckling and enhance shear strength. However, in bridge applications, repeated vibrations from lateral traffic loads and low-frequency cyclic actions may cause premature energy dissipation and fatigue damage, thus reducing the seismic performance of CHSD during design-level earthquakes. To address this issue, this study integrates fins and gaps into CHSD to enhance stability against buckling and to mitigate fatigue-induced damage. The CHSD specimens were fabricated in three variations: without fins, with fins, and with fins and gaps. Cyclic loading tests and nonlinear finite element analyses were conducted to evaluate their effects on mechanical properties and seismic performance. Cyclic loading was performed in accordance with the AISC 341-22 protocol and applied at 0° and 30° to simulate multidirectional lateral forces. The cyclic test results reveal that the addition of fins exhibits both beneficial and adverse effects on the mechanical properties and seismic performance of CHSD, while the gap reduces the equivalent viscous damping ratio. The backbone curves derived from the numerical analyses agree well with experimental results. Furthermore, the damper shear resistance and deformation capacity are delayed by the presence of gaps, mitigating fatigue-related damage.
Co-Authors Adita Dwi Sampurno Agung Harijoko Agus Budhie Wijatna Agus Taufik Mulyono Ahmad Rifa'i Ahmad Wancik Ali Awaludin Aminullah, Akhmad Ananto Nugroho, Ananto Andreas Triwiyono Angeline Yuhasnita Anisa Ardha, Yusufa Kholifa Arfiati FArdhani, Arfiati Ari Dwi Hariyanto Arief Gunarto Aritonang, Tobok S. M. Ashar Saputra Ashar Saputra Danang Purwanto Darmawan, M. Fauzi Dedy Sumaryanto Dian Rifany K. Diarto Trisnoyuwono Djoko Sulistyo Fathurrachman, Muhammad Puja Gatot Subagio Gayatri Indah Marliyani Gerson Pongajow Hanani, Eklisia Haroki, Yusuf Haryadi Widodo Hendra Putra Howardy Howardy Hsuan-Teh Hu INTAN SUPRABA Juandra Hartono Juandra Hartono, Juandra Kardiyono T. Kardiyono T. Kardiyono Tjokrodimuljo Kardiyono Tjokrodimulyo Kukuh Adhi Kafie Latif Budi Suparma Lilis Tiyani Md Nor, Noorsuhada Muslikh Muslikh Ningtyas, Nadya Nur Pratama, Hamdi Y. Purnomo, Sidiq Putra, Whelly T. Putri, Andini Pratiwi R. Abadirulian Ervantara Radianta Triadmadja Rimindubby, Vriska D.S Satmoko, Tranggono Aji Setiaji, Abimanyu Bondan Wicaksono Setiawan, Angga F. Setiawan, Angga Fajar Subyakto Subyakto Sumartono, Ignatius Harry Suprapto Siswosukarto Suratmin Syarif, Syafitri Utomo, Adityo Budi Vernandest, Effri Widiana, Niza Widiasmoro Widiasmoro Yanuar Haryanto Yudhi Ardiansyah Yudhi Arnandha Zulkifli, Rifdah Rofifah