Research Article
Constant Ductility Site-Specific Yield Point Spectra for Seismic Design
Table 3
Parameters in equation (
5).
| Site class | μ | a | b | c | d | e | Δ1 | Δ2 |
| B | 1 | 0.588 | 0.141 | 0.551 | −0.287 | 0.021 | 0.233 | 0.532 | 2 | 0.328 | 0.116 | 0.131 | −0.632 | 0.009 | 0.133 | 0.278 | 3 | 0.222 | 0.109 | 0.104 | −0.965 | 0.006 | 0.105 | 0.216 | 4 | 0.140 | 0.105 | 0.091 | −1.267 | 0.004 | 0.090 | 0.183 | 5 | 0.037 | 0.102 | 0.082 | −1.569 | 0.004 | 0.082 | 0.163 | 6 | −0.023 | 0.100 | 0.076 | −1.856 | 0.003 | 0.075 | 0.148 |
| C | 1 | 0.174 | 0.130 | 0.267 | −0.074 | 0.013 | 0.210 | 0.531 | 2 | 0.098 | 0.100 | 0.146 | −0.179 | 0.008 | 0.127 | 0.293 | 3 | 0.050 | 0.093 | 0.116 | −0.284 | 0.006 | 0.104 | 0.233 | 4 | 0.020 | 0.089 | 0.101 | −0.376 | 0.004 | 0.092 | 0.202 | 5 | −0.005 | 0.086 | 0.092 | −0.466 | 0.004 | 0.084 | 0.182 | 6 | −0.024 | 0.084 | 0.085 | −0.548 | 0.003 | 0.079 | 0.167 |
| D | 1 | 0.191 | 0.133 | 0.229 | −0.069 | 0.027 | 0.193 | 0.470 | 2 | 0.099 | 0.101 | 0.129 | −0.155 | 0.010 | 0.113 | 0.256 | 3 | 0.049 | 0.094 | 0.103 | −0.241 | 0.006 | 0.093 | 0.201 | 4 | 0.017 | 0.089 | 0.090 | −0.313 | 0.004 | 0.082 | 0.174 | 5 | −0.011 | 0.086 | 0.081 | −0.370 | 0.003 | 0.075 | 0.156 | 6 | −0.033 | 0.084 | 0.075 | −0.435 | 0.002 | 0.070 | 0.143 |
| E | 1 | 0.103 | 0.112 | 0.333 | −0.024 | −0.033 | 0.478 | 3.025 | 2 | 0.050 | 0.096 | 0.171 | −0.062 | −0.013 | 0.277 | 1.553 | 3 | 0.023 | 0.092 | 0.129 | −0.097 | −0.008 | 0.230 | 1.130 | 4 | 0.006 | 0.090 | 0.111 | −0.141 | −0.005 | 0.206 | 0.942 | 5 | −0.007 | 0.088 | 0.099 | −0.184 | −0.004 | 0.190 | 0.832 | 6 | −0.017 | 0.087 | 0.091 | −0.223 | −0.004 | 0.179 | 0.738 |
| All sites | 1 | 0.178 | 0.137 | 0.263 | −0.082 | 0.009 | 0.225 | 0.532 | 2 | 0.096 | 0.103 | 0.142 | −0.193 | 0.004 | 0.130 | 0.286 | 3 | 0.047 | 0.095 | 0.112 | −0.304 | 0.003 | 0.105 | 0.223 | 4 | 0.014 | 0.090 | 0.097 | −0.407 | 0.003 | 0.092 | 0.191 | 5 | −0.012 | 0.087 | 0.088 | −0.511 | 0.002 | 0.083 | 0.171 | 6 | −0.033 | 0.084 | 0.082 | −0.605 | 0.001 | 0.078 | 0.156 |
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