Equivalent static wind loads on long-span roof structures with modal response correlations

This paper presents a new description of the equivalentstatic wind loads (ESWLs) on long-span roof structures based on theload-response-correlation approach. The ESWL for a given peak displacementresponse is expressed in terms of the mean and dynamic components. It isnoteworthy that in the proposed approach, the total dynamic response isdirectly calculated by the complete quadratic combination approach, which isnot separated into the background and resonant responses any longer; and thecontributions of multimode response and modal response correlations aretaken into consideration. Finally, an extra-long-span roof structure whichis the world's longest spatial lattice structure is considered to illustratethe determination of the ESWLs and to demonstrate its effectiveness in thedesign and analysis of long-span roof structures.