# Solution8 - CE 728 Geotechnical Earthquake Engineering...

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CE 728 Geotechnical Earthquake Engineering Department of Civil Engineering Middle East Technical University, Ankara,Turkey Assoc. Prof. Dr. K. Önder Çetin SOLUTION 8 Seismic Assessment of Retaining Structures a) The active and passive pressures acting on the wall by using Rankine’s theory: Not to Scale For Soil 1 33 . 0 30 1 30 1 sin 1 sin 1 K A = + - = φ′ + φ′ - = For Soil 2 307 . 0 32 1 32 1 sin 1 sin 1 K A = + - = φ′ + φ′ - = @ z= 0 m / kN 67 . 6 20 33 . 0 P A = × = @ z= 4 m / kN 67 . 30 18 4 33 . 0 67 . 6 P A = × × + = @ z= 4 m / kN 24 . 28 ) 18 4 20 ( 307 . 0 P A = × + × = @ z= 4 m / kN 91 . 39 19 2 307 . 0 24 . 28 P A = × × + = Total resulting force per meter length acting on the wall: m / kN 8 . 142 2 2 91 . 39 24 . 28 4 ) 2 67 . 30 67 . 6 ( R wall 2245 × + + × + = b) The net dynamic thrust and its point of application on the wall during this earthquake scenario by using Mononobe-Okabe (1921, 1926) method. In this part, the dynamic thrust will be calculated assuming two different homogeneous soil

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Solution8 - CE 728 Geotechnical Earthquake Engineering...

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