Conceptual configuration and seismic performance of high-rise steel braced frame
| Autor: | Kemin Zhou, Weichen Li, Shengfang Qiao, Xiaolei Han |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Computer science
business.industry Topology optimization 0211 other engineering and technologies Metals and Alloys Structure (category theory) 02 engineering and technology Building and Construction Structural engineering 021001 nanoscience & nanotechnology Brace Displacement (vector) Nonlinear system OpenSees 021105 building & construction Braced frame 0210 nano-technology business Roof Civil and Structural Engineering |
| Zdroj: | Steel and Composite Structures. 23:173-186 |
| ISSN: | 1229-9367 |
| DOI: | 10.12989/scs.2017.23.2.173 |
| Popis: | Conceptual configuration and seismic performance of high-rise steel frame-brace structure are studied. First, the topology optimization problem of minimum volume based on truss-like material model under earthquake action is presented, which is solved by full-stress method. Further, conceptual configurations of 20-storey and 40-storey steel frame-brace structure are formed. Next, the 40-storeystructure model is developed in Opensees. Two common configurations are utilized for comparison. Last, seismic performance of 40-storey structure is derived using nonlinear static analysis and nonlinear dynamic analysis. Results indicate that structural lateral stiffness and maximum roof displacement can be improved using brace. Meanwhile seismic damage can also be decreased. Moreover, frame-brace structure using topology optimization is most favorable to enhance lateral stiffness and mitigate seismic damage. Thus, topology optimization is an available way to form initial conceptual configuration in high-rise steel frame-brace structure. |
| Databáze: | OpenAIRE |
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