1Harty N, Danaher M. Evaluating preliminary struc- tural designs in an expert system[J]. Computers and Structures, 1997,63 (6) : 1243-1249.
2Chan C M, Wang Q. Nonlinear stiffness design opti- mization of tall reinforced concrete buildings under service loads[J]. Journal of Structural Engineering ASCE, 2006,132(6) :978-990.
3Saka M P. Optimum design of steel sway frames to BS5950 using harmony search algorithm[J]. Journal of Constructional Steel Research, 2009,65 : 36-43.
4Holland J H. Adaptive in Natural and Artificial Systems[M]. Ann Arbor: University of Michigan, 1975.
5Goldberg D E. Genetic Algorithms in Search, Opti- mization,and Machine Learning [M]. New York: Addison -Wesley, 1989.
6Lakes R. Materials with structural hierarchy[J]. Na- ture, 1993,361:511-515.
