浅谈500 kV港茂输电铁塔等截面斜柱基础的施工

Primary Discussion about Construction of Foundation for Equal-sectional Inclined Column Tower for 500 kV Gang—Mao Transmission Line

斜柱基础是指基础主柱与铁塔主材坡度相一致的基础,其特点是主柱与地面有一个倾斜角度,减少由于水平力在主柱根部引起的双向弯矩,改善主柱受力性能,减少基础钢材用量,铁塔的水平力通过斜柱传至底板,使底板承受水平力。因此,支模、钢筋及地脚螺栓安装等都应按规定倾斜角进行尺寸控制。

The inclined column foundation indicates that the slope of the foundation columns consistent with the main member of the tower, whose feature is that the main column has an inclined angle to the ground surface. This can reduces the double - direction bending moment caused by the horizontal force on the column root, improves the bearing performance of the column and reduce the steel consumption of the foundation. The horizontal force of the tower is transmitted to the bottom through the inclined columns and the bottom plate bears the horizontal force. Therefore, the installation of the supporting module, reinforced bar and foundation bolts should be controlled according to the specified inclined