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ARTÍCULO
TITULO

STUDI EFEKTIFITAS PENGGUNAAN TUNED MASS DAMPER PADA STRUKTUR GEDUNG DALAM MEREDUKSI RESPONS DINAMIK AKIBAT BEBAN SEISMIK

Wong Foek Tjong    
Robby Sumendap    
Freddy Gunawan    
Takim Andriono    

Resumen

One of the approaches to reduce excessive oscillation on buildings due to dynamic forces is byinstalling a mechanical device called tuned mass damper (TMD). This paper presents a study on theeffectiveness of TMDs installed on the top story of 1, 5, 10, and 15-story buildings excited byearthquake accelerograms of El Centro 1940, Denpasar 1981, and Pacoima 1971. Two-dimensionallinear-elastic shear building model with TMD on the top is used in performing dynamic analysis. Theeffectiveness of the TMD is evaluated by comparing the responses: displacement, inter-story drift, andacceleration, with and without TMD. The results of the study show that the responses are generallydamped. However, in some cases the responses could be larger, thus using of TMD for reducingseismic response should be reconsidered. Abstract in Bahasa Indonesia : Untuk mengatasi masalah guncangan yang berlebihan pada struktur gedung akibat beban dinamis,telah dikembangkan konsep kontrol pada struktur dengan menggunakan Tuned Mass Damper(TMD). Tulisan ini menyajikan studi efektifitas TMD yang dipasang pada struktur gedung 1, 5, 10,dan 15 tingkat yang dikenai akselerogram gempa-gempa El Centro 1940, Denpasar 1981, danPacoima 1971 (modifikasi). Dalam melakukan analisis dinamis, struktur dimodelkan sebagaibangunan geser elastis linier dua dimensi dengan TMD pada lantai teratas. Efektifitas TMDdievaluasi dengan membandingkan respons perpindahan, simpangan antar tingkat, dan percepatandari struktur tanpa dan dengan TMD. Massa TMD ditetapkan sebesar 1%, 2%, dan 3% dari massastruktur utamanya. Hasil studi menunjukkan umumnya respons struktur dapat teredam.Meskipun demikian, pada beberapa kasus dapat terjadi respons struktur bertambah besar, sehinggapenggunaan TMD untuk mereduksi respons akibat gempa perlu dipertimbangkan lagi

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