DISPLACEMENT-BASED SEISMIC DESIGN
DISPLACEMENT-BASED SEISMIC DESIGN
DISPLACEMENT-BASED SEISMIC DESIGN
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INFLUENCE OF <strong>SEISMIC</strong> INTENSITY ON <strong>DESIGN</strong><br />
FORCES<br />
Force-Based Design Displacement-Based Design<br />
V<br />
Z<br />
e 2<br />
=<br />
e1<br />
, but<br />
2<br />
b 2<br />
= V<br />
Z2<br />
b1<br />
Z<br />
Hence: K<br />
1<br />
e<br />
If Z 2<br />
= 0.5Z 1<br />
, V b2<br />
= 0.5V b1<br />
Hence:<br />
T<br />
T<br />
Z<br />
1<br />
V<br />
=<br />
K<br />
K<br />
e<br />
⎛ Z<br />
⎜<br />
=<br />
⎞<br />
2<br />
2 1 ⎟ e ⎜<br />
⎝ Z1<br />
⎠<br />
2<br />
= V<br />
⎛ Z<br />
⎜<br />
⎝<br />
⎞<br />
2<br />
2 1 ⎟ B B ⎜ Z1<br />
⎠<br />
2 2<br />
4π<br />
me<br />
/ Te<br />
2<br />
: V 75 b2<br />
= 0.25V b1
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