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http://dx.doi.org/10.12989/scs.2016.21.3.501

Seismic analysis of steel structure with brace configuration using topology optimization  

Qiao, Shengfang (School of Civil Engineering and Transportation, South China University of Technology)
Han, Xiaolei (School of Civil Engineering and Transportation, South China University of Technology)
Zhou, Kemin (College of Civil Engineering, Huaqiao University)
Ji, Jing (School of Civil Engineering and Transportation, South China University of Technology)
Publication Information
Steel and Composite Structures / v.21, no.3, 2016 , pp. 501-515 More about this Journal
Abstract
Seismic analysis for steel frame structure with brace configuration using topology optimization based on truss-like material model is studied. The initial design domain for topology optimization is determined according to original steel frame structure and filled with truss-like members. Hence the initial truss-like continuum is established. The densities and orientation of truss-like members at any point are taken as design variables in finite element analysis. The topology optimization problem of least-weight truss-like continuum with stress constraints is solved. The orientations and densities of members in truss-like continuum are optimized and updated by fully-stressed criterion in every iteration. The optimized truss-like continuum is founded after finite element analysis is finished. The optimal bracing system is established based on optimized truss-like continuum without numerical instability. Seismic performance for steel frame structures is derived using dynamic time-history analysis. A numerical example shows the advantage for frame structures with brace configuration using topology optimization in seismic performance.
Keywords
brace; topology optimization; truss-like; story drift; dynamic time-history analysis;
Citations & Related Records
Times Cited By KSCI : 7  (Citation Analysis)
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