ENGINEERING JOURNAL : PERBANDINGAN ANALISIS STATIS TERHADAP ANALISIS DINAMIS PADA STRUKTUR BETON BERTULANG TAHAN GEMPA SESUAI FEMA-356 DAN SNI-03-1726-2002

Jurnal Rekayasa Vol 4 No 2 Artikel 05

Arie Wardhono
(Staf pengajar Jurusan Teknik Sipil, Fakultas Teknik, Universitas Negeri Surabaya & Mahasiswa S-2 Teknik Struktur Jurusan Teknik Sipil - ITS Surabaya)


ABSTRACT: In a few years, buildings have partially or totally collapsed during the earthquake even these buildings were designed and constructed in accordance with modern seismic design principles. It’s possible that collapse have been the result of deficiencies in the knowledge of the regional seismic hazard, the behavior of structural material under dynamic loads, and the post-elastic behavior of structural systems. Besides, seismic force that happened is more alike dynamic condition than static condition. Based on these, a comparative analysis to seismic resistance for reinforced concrete structure based on the concepts “strong column weak beam” will be conducted by giving seismic force using static analytical method and dynamic analytical method.
The objection of this study are to know the position of dynamic analytical method to building performance as result of non-linear static analysis, to know the performance level of a reinforced concrete building structures which located in earthquake zone 6 by knowing the ductility level that gained and the position of its plastic hinge according to SNI 03-1726-2002 and FEMA-356 regulations.
The analysis results show the value of base reaction of dynamic method for El Centro earthquake = 59,8 ton exceeds static method for linear condition = 34,9 ton but still in margin area of inelastic = 63,9 ton. While the value of base reaction of earthquake for Altadena, Holliste and Lexing still in margin area of elastic condition. The result of dynamic analysis is still in elastic area except for El Centro earthquake in inelastic area . The analysis result show that the structure ductility level () = 8,19 bigger than the maximum ductility (m) = 5,3. This mean that building structure still can maintain its strength so that the structure still stand up even it has been position in the verge of collapse condition. While plastic hinge is happened at beam at first time as according to strong column weak beam concept. The displacement value () is equal to = 41,4 cm at condition of Critical Prevention over the displacement target (t) = 27,4 cm based on FEMA-356, but still on the limits of Kinerja Batas Ultimit that specified in SNI-03-1726-2002 equal to m = 42 cm, so that dynamic analysis displacement.

Keywords: Reinforced concrete building, earthquake, performance-based evaluation, dynamic analysis, static analysis

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