The influence of initial guy cable prestress on single-mast guyed tower's mechanical properties

摘要

A single-mast guyed tower recommended by a UHV DC transmission line was set as an example. To study initial guy cable prestress's influence on guyed tower's mechanical properties, the guyed tower under wind load was analyzed with finite element method considering geometry nonlinearity. Result shows: when initial guy cable prestress is less than critical guy cable prestress, with the growth of initial guy cable prestress, nodes' displacement decreases, guy cables' work stress and leg member's axial force stay; when initial guy cable prestress is greater than critical guy cable prestress, with the growth of initial guy cable prestress, nodes' displacement stays, guy cables' work stress and leg member's axial force proceed a linear increase.