Analysis on Properties of Cooperative Work of Curtain Wall Support Structure with Main Structure of Shanghai Tower Under Wind Loads and Earthquake

Abstract:

By means of integrated model including suspend curtain wall support structure (CWSS) and main structure, relative deformation and its effect on CWSS are analyzed under horizontal earthquake and wind load. And the response of vertical nonuniform deformation, internal forces and acceleration of CWSS are also studied under vertical earthquake in detail.Analysis results shown that, Under horizontal loads, vertical relative deformation between main structure and ring beam will lead to additional moments of radial strut. Setting the sliding structure in the end of radial strut can reduce the additional moment and ensure service of curtain wall safety. Under vertical earthquake, a larger nouniform deformation which have an adverse effects on plates, additional axial force of sag rods and significant vertical acceleration response of ring beam will be produced. In the design process, all above adverse factors should be evaluated to ensure the safety of curtain wall system under vertical earthquake.