在输电线路设计方案比选及优化中，需要随时调用杆塔费用指标(或杆塔质量指标)。通常估算杆塔质量（下称塔重）的方法是在已有施工图设计塔重的基础上，只对塔型的一种呼高进行计算，而同一型式的其他呼高或另外荷载条件下的塔重，则用公式近似估算，其误差大，操作繁琐，因此需提出简单实用的新型塔重估算模型。采用“±800 kV铁塔典设”的塔型塔重作为数据样本，以非线性多元回归分析理论为依据建立数学模型，使用仿真软件Matlab对样本数据进行计算和分析，从而得到铁塔质量与杆塔呼高、荷载条件等的数学关系式。由该式得出的估算塔重结果分别与实际典设塔重和哈郑线设计标段总塔重作比较，其误差小、精度高、实用有效，对于设计方案比选及优化是可以接受的。

In the scheme comparison and optimization design of power transmission line, it is necessary to use the tower charges (weights) in different schemes. The conventional estimation method of tower weight is to calculate one kind of height based on tower weight existed in an actual construction design. While the towers’ weight at other heights and under other loads are estimated approximately with formulas, which makes bigger error and trouble work, so a simple, practical estimation model of tower weight is required. Taking the type and weight of tower in "±800 kV tower typical design" as the data samples, amathematical mode based on nonlinear multiple regression analysis was established, the sample data were calculated and analyzed with simulation software Matlab, thus the mathematical relationship between tower weight and tower height, loading condition were obtained. Compared with the data of typical design and actual Hazheng construction design, the error of tower weight estimated by the estimation mode is small, while its accuracy is high, which indicates that the estimation mode is practical, effective, and suitable for the scheme comparison and optimization design.