摘要
叙述了铁塔构件材料合理代用的原则，对构件在不同受力状态下材料代用进行了理论分析计算，为铁塔制造厂材料代用提供了理论依据。
The principle of reasonable substitution of steel tower component materal is discussed here. The substitution material used under different conditions is analysed and calculated in theory.It provides theoretical basis of material substitution for steel tower plant.
