Universal equivalent static wind loads of one single-layer reticular dome

Abstract

A new method to analyze universal equivalent static winds (ESWL) simultaneously reproducing multiple largest load effects (names as multiple equivalent targets) is proposed, on basis of analysis method of ESWL for one certain largest load effect and the method proposed by A. Kasumura and Y. Tamura [5]. Furthermore, this method is employed to study universal ESWL of one single-layer reticular dome. The principles of this method are: according to characteristics of wind-induced response, dominant eigen-modes of wind loads and dominant vibration modes are chosen as fundamental vectors to express universal ESWL for multiple targets; and a least square approximation method is employed to calculate the weighting factors of these fundamental vectors, thus, universal ESWL for multiple targets are obtained. The analysis results of the single-layer reticular dome show that: structural response of all nodes or all supports under the same ESWL agrees well with peak values under actual dynamic wind loads at the same time.