Design and Study of Super Suspend Curtain Wall Support Structure of Shanghai Tower

Abstract:

A unique flexible suspend curtain wall support structure (CWSS) was ultimately developed to suit exterior curtain wall system of Shanghai Tower. Its characteristics of the deviation from main structure, the twisted geometry, the heavy weight, the high suspension height, the weak & nouniform support stiffness led to the complicated cooperation properties with main structure, and a number of unprecedented challenge for the analysis and design arose. From the scheme design to the construction drawing design, structural system and joint details underwent repeated rounds of analysis, proof and optimization. Especially, By means of cooperative analysis of integrated model including CWSS and main structure, the properties of cooperative work of CWSS under horizontal and vertical loads, vertical seismic response, mechanical properties of CWSS in construction were analyzed in detail. These work ensured the successful implementation of the project construction. The actual installation and construction have proved the reliability of the design of this system. The structural design process of CWSS is tough, and its design method and achievement also enrich and improve the existing design method and concept of curtain wall systems of high buildings. Meanwhile, it encourages a lot of new studies in structural design of complex curtain wall systems of high buildings.

Key words:suspend curtain wall support structure; structure selection; connection design; cooperative work analysis; vertical seismic response analysis; construction simulation analysis