rekayasa gempa
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RESPON SPECTRA BERDASARKAN SNI 1726-2010
REKAYASA GEMPA
PERTEMUAN KE-5
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Respon Spectra SNI 2002 vs 2010:
REKAYASA GEMPA
SNI 2002
Respon spectra sudah tersedia
(pada gambar 2)
SNI 2010
Respon spectra dibuat sendiri
Data yang diperlukan ;
1. ASCE 7 2010
2. Peta zona gempa SNI 2010
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1. ASCE 7 2010
REKAYASA GEMPA
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2. Parameter Respon Spektrum :
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a) Ss
Respon Spektrum periode pendek (s = short)
Gunakan Respon spekta 0.2 dtk prob. 2%
Contoh : daerah jakarta
Antara 0.60 & 0.75
Ss = 0.65
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2. Parameter Respon Spektrum :
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b) S1
Respon spektra periode 1 detik (1 = 1 dt)
Respon spektra 1 dt prob. 2%
Contoh darah jakarta
(Antara 0.25 & 0.30)
S1 = 0.27
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Minimal 2 dari data tersebut harus ada
Kondisi normal indonesia Kelas C,D,& E (Tabel 3 SNI 2010)
3. Tentukan kelas lokasi :
REKAYASA GEMPA
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Fa = Koefisien situs periode pendek (0.2 dt) 1.4
Nilai antara Ss dapat diinterpolasi (Tabel 4 SNI 2010)
4. Tabel Fa & Fv:
REKAYASA GEMPA
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Fv = Koefisien situs periode pendek (1 dt) 2.92
Nilai antara S1 dapat diinterpolasi (Tabel 5 SNI 2010)
4. Tabel Fa & Fv:
REKAYASA GEMPA
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5. Hitung
REKAYASA GEMPA
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Dengan nilai
5. Gambar Respon Spektra dengan exel
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