Journal
JOURNAL OF EARTHQUAKE ENGINEERING
Volume 16, Issue 4, Pages 443-462Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/13632469.2012.654897
Keywords
Optimization; Performance-Based Seismic Design; Irregular Structures; Lateral Forces; Site Soil Classification; Ductility
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An optimization method based on uniform damage distribution is used to find optimum design load distribution for seismic design of regular and irregular shear-buildings to achieve minimum structural damage. By using 75 synthetic spectrum-compatible earthquakes, optimum design load distributions are obtained for different performance targets, dynamic characteristics, and site soil classifications. For the same structural weight, optimum designed buildings experience up to 40% less global damage compared to code-based designed buildings. A new general load distribution equation is presented for optimum performance-based seismic design of structures which leads to a more efficient use of structural materials and better seismic performance.
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