PARAMETER DINAMIK TANAH
KORELASI EMPIRIK DATA LABORATORIUM
SANDS
Sandy Soils Shear Modulus (Hardin&Drnevich
Sandy Soils sm = (1+2Ko) sv’ Ko = koefisien tekanan tanah at rest = 1 – sin f 1 psf = 4.8824 kg/cm2 = 0.048824 kPa Shear Modulus (Hardin&Drnevich
Sandy Soils Shear Modulus (Hardin&Drnevich
Sandy Soils Damping Ratio (Hardin&Drnevich
Sandy Soils Damping Ratio (Hardin&Drnevich
Sandy Soils CHART Shear Modulus for Clean Sands (Relative Density Based)
Sandy Soils CHART Shear Modulus for Clean Sands (Void Ratio Based)
Sandy Soils CHART G/Gmax Shear Modulus
Sandy Soils CHART Damping Ratio for Sand
CLAYS
Clayey Soils CHART Shear Modulus
Parameter Dinamik CHART G/Gmax Shear Modulus
Clayey Soils CHART Damping Ratio
GRAVELLY
Gravelly CHART Shear Modulus
Gravelly CHART Damping Ratio (sama dengan Tanah pasir)
PEATS
Peats CHART Shear Modulus
Peats CHART Damping Ratio
DATA LAIN
Berdasarkan e dan sv’ G0 = A x F(e) x (sm)n
Berdasarkan e dan sv’ Jenis Tanah Sumber A F(e) n Pasir Hardin-Richart (1963) 7000 (2.17-e)2 / (1+e) 0.5 3300 (2.97-e)2 / (1+e) Iwasaki-Tatsuoka (1978) 16600 0.4 Shibata-Soelarno (1975) 42000 (0.67-e) / (1+e) Kokusho (1980) 8400 Yu-Richart (1984) Lempung Hardin-Black (1968) 3270 0.6 Marcuson-Wahls (1972) 4500 445 (4.40-e)2 / (1+e) Kokusho (1982) 90 (7.32-e)2 / (1+e) Zen-Umehara (1978) 2000-4000 Gravel Prange (1981) 7320 0.38 Kokusho - Esashi (1981) 13000 0.55
KORELASI EMPIRIK DATA LAPANGAN
Gmax (t/m2) atau Vs max (m/detik) Data N-SPT No Sumber Jenis Tanah Gmax (t/m2) atau Vs max (m/detik) 1 Imai & Yoshimura (1970) Semua Gmax = 1000 N0.78 2 Ohba % Toriumi (1970) Alluvium Gmax = 1220 N0.62 3 Ohsaki & Iwasaki (1972) Gmax = 1218 N0.78 4 Hara et all (1974) Kohesif Gmax = 1580 N0.668 5 Imai (1977) Gmax = 1200 N0.888 6 Japan Standard for Highway Vs max = 100 N1/3 7 Non Kohesif Vs max = 80 N1/3
Rentang Nilai Vs