在常规的输电线路基础设计中，习惯采用每个塔腿下单独配置独立柱基础的做法。通过分析基础作用力的传递特点，将4 个独立基础联合成为一个整体，通过十字交叉梁传递基础的上拔、下压力，将基础的上拔计算变为受弯计算。对输电线路自平衡交叉基础的设计原理和设计方法进行了介绍，对其设计特点和设计过程中的一些问题进行了探讨，并与其他基础型式进行了对比，分析了其适用范围和存在的不足。实例计算表明，该基础型式有着埋深浅、可靠性高、整体性好、抵抗水平位移能力强、经济性较好等特点，具有良好的推广价值，尤其适用于一些特殊地质条件下的基础设计。

In conventional design of transmission lines, independent column foundation is individually allocated to each leg of tower. By analyzing the transmission tower foundation forces, four separate columns are united as a whole, the uplift and down force of foundations transmitted by cross beam, and the uplift force calculation is changed to bending force calculation. Furthermore, this design principles and methods of self-balanced cross foundation are introduced, and some issues of design features and process discussed. The self-balanced cross foundation is compared with other foundations, of which the applicability and shortcomings are analyzed. It is found from the calculations that the self-balanced cross foundation has the advantages of shallow depth, high reliability, perfect integrity, strong ability to resisting horizontal displacement, and better economy. Therefore it is worthy to be popularized, especially for the foundation designs of special geological conditions.