Investigation of design and static test for bamboo structure based on evolutionary structural optimization
In order to promote the development of bamboo structures,a new design method for bamboo structures based on topology optimization is suggested and the corresponding static tests research for con-trast are completed as well.First,the systematic method for guiding bamboo structure design by the light of evolutionary structural optimization was discussed.Then,combined with engineering examples,a dual-lane bridge structure was optimally designed to two kinds based on optimization feasible domains of evolving separately to pressure bearing structure and tension structure.Afterwards,the static tests research was car-ried out for contrast.The results show that the optimal designed bridge structures coincided with Michell-type truss structures.Their structural stiffness was significantly higher than that of empirical design mem-bers.Furthermore,the pressure bearing topological arch structures had larger stiffness about three times than the tension topological suspension structures,and yet their ultimate bearing capacity was slightly low-er.Thus,the new design method based on evolutionary structural optimization can obtain different schemes by the guidance of appropriate optimization feasible domains according to different design requirements for bearing capacity and stiffness.It is so simple and practical that provides an optimal design method for engi-neering bamboo structure,which can be analyzed and calculated automatically.
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