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| Multi-objective optimization design for seismic structures based on trilinear damage-reduction model |
| Received:January 30, 2019 Revised:March 23, 2019 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20190130001 |
| KeyWord:damage-reduction seismic design multi-objective optimization structural fuse |
| Author | Institution |
| 李刚 |
大连理工大学 工业装备结构分析国家重点实验室, 大连 |
| 王梦晨 |
大连理工大学 工业装备结构分析国家重点实验室, 大连 |
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| Abstract: |
| A multi-objective optimization strategy for seismic structures was proposed based on trilinear damage-reduction model.Considering the frame structures with the buckling-restrained braces (BRB) as the damage-reduction part,the optimization design was performed by using multi-objective genetic algorithm with the cross-section areas of BRB as design variables.The Pareto solution of multi-objective optimization was obtained,and the relations of structural properties,such as total amount of the damage-reduction part and inter-story drift ratio,were discussed.The results showed that the multi-objective optimization model of damage-reduction structure can deal with the structural cost and seismic performance comprehensively,satisfying different requirements according to the design preferences.The effect of the damage-reduction part on the structural performance increases considerably with the increase of the earthquake intensity,which means that the structure with damage-reduction part can resist the action of severe earthquake effectively. |