Abstract

Based on ANSYS software, several typical engineering examples were analyzed; and the secondary stress level, distribution characteristic, and variable of secondary stress trend with different geometric parameters were studied. The result shows that: for the UHV transmission towers, the secondary stress of primary members near the gradient changed place and the tower leg was remarkable; The secondary effect has relation not only with slenderness ratio, but also has relation with the angles of primary members and auxiliary members, the slope of the primary members, and the configuration of auxiliary members, etc. At last, the equations are proposed, which will enable the secondary stress of the UHV transmission towers to be quantified.

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