Optimization of 110 m Aperture Fully Steerable Radio Telescope Prestressed Back Frame Structure Based on a Genetic Algorithm

<table class="table-group" id="tab7"><tr><td><table class="table"><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr class="thead"><td class="align_left" colspan="2">Calculation parameters</td><td class="align_center">Value</td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td class="align_left" rowspan="2">Material properties</td><td class="align_left">Frequent earthquakes</td><td class="align_center">Isotropic linear elastic material</td></tr><tr><td class="align_left">Rare earthquakes</td><td class="align_center">Bilinear model, the elastic modulus changes to 2% of the initial elastic modulus after yielding</td></tr><tr><td class="align_left" colspan="3"><hr/></td></tr><tr><td class="align_left" colspan="2">Damping ratio</td><td class="align_center">0.02</td></tr><tr><td class="align_left" colspan="2">Seismic action</td><td class="align_center">3D, peak acceleration <i>a</i><sub><i>x</i></sub> : <i>a</i><sub><i>y</i></sub> : <i>a</i><sub><i>z</i></sub> = 1.0 : 0.85 : 0.65</td></tr><tr><td class="align_left" colspan="2">Design intensity</td><td class="align_center">8 (<i>α</i> = 0.20 g)</td></tr><tr><td class="align_left" colspan="2">Site classification for construction</td><td class="align_center">II</td></tr><tr><td class="align_left" colspan="2">Period</td><td class="align_center">Basic frequency: 0.656 Hz, basic period: 1.52 s</td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Seismic action calculation parameters.</div>

Advances in Civil Engineering

tab7

Table 7

Table 7: Optimization of 110 m Aperture Fully Steerable Radio Telescope Prestressed Back Frame Structure Based on a Genetic Algorithm 