Research on the Mechanical Properties of Mega Steel Frame-Double Skin Composite Shear Wall Residential System
A mega steel frame-double skin composite shear wall residential system was proposed based on the mega structural system.A 156 m high calculation model was built based on a practical super high-rise concrete residential project background.The mechanical properties of the structure were evaluated by the elastic response and the elasto-plastic time-history analysis.The impact of the connection type of primary and secondary structures was studied for the overall performance and key structural components by comparing the different connection assumptions.Using the ABAQUS software,the influence of different connection modes between the secondary structure and the double skin composite shear wall on the components of the shear wall was analyzed.Finally,the economy of the new structural system was analyzed.The results show that the structural system can meet the design requirements of large space without columns in building units and has excellent mechanical properties and economic indices.Hinged connection is recommended for primary and secondary structure connection in design.The results may provide a useful reference for the designers.
mega steel frame structureconnection of primary and secondary structuresdouble skin composite shear wallelastic response analysiselastic-plastic time-history analysis
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