time history analysis _damping calculation

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  • 7/25/2019 Time History Analysis _damping Calculation

    1/2

    Surface area m2 vrizontal directionrizontal direction Vertical Horizonta

    datum yz -plane xz plane xy plane front :

    Ballat 0.600 2.30E+06 0.180 2.50 #NU

    Soft !ock 7 50 1.20E+05 0.280 2.20 #NU

    "eat#ered 4 2.00E+03 0.280 2.00 #NU

    Silt 9 2.00E+03 0.350 1.80 #NU

    $pper !oad Bed 1 3.00E+03 0.350 1.90 #NU

    %o&er !oad Bed 11 1.00E+04 0.300 2.00 #NU

    !einforced !oad 0.5 1.30E+04 0.250 1.90 #NU

    'p '

    Ballat 797.766 498.360 1

    Soft !ock 185.482 102.529 7

    "eat#ered 22.831 12.620 6

    Silt 24.269 11.658 5

    $pper !oad Bed 30.537 14.670 3%o&er !oad Bed 52.388 28.002 4

    !einforced !oa 54.967 31.735 2

    (tf/m2)

    enity(tonf/m3)

    -

    Vertical ground reaction: coefficent

    :

    Horizontal ground reaction:

    kh= k

    ho

    (B

    h

    30

    )

    3 /4

    kv= k

    vo(Bv30)

    3/4

  • 7/25/2019 Time History Analysis _damping Calculation

    2/2

    (30

    )

    Cx = Cp

    Cy = Cs

    Cz = CsCx = Cs

    Cy = Cp

    Cz = Cs

    : =

    E

    (1+ )(12 )

    G= E

    2(1+ )

    CP=A

    +2G

    =WA

    +2G

    W9.81=c

    PA

    CS=A

    G

    =WA

    G

    W9.81=c

    SA