Applicative Limitation of Helical Anchor Foundation in Plateau Area 750 kV Transmission Lines
Helical anchor foundation is widely used in low-voltage transmission lines with soft geological conditions,such as river network in plain area,mud marsh,coastal beach,etc.,however,there is no definite conclusion on the applicabili-ty of helical anchor foundation under the geological conditions such as hard soil or gravel-bearing soil in the plateau area. Based on the foundation design of 750 kV transmission line project in plateau area,starting with the processing technology of helical anchor foundation,selection of construction machinery,and comparison with conventional foundation in econo-my,this paper discusses and analyzes the limitation of application of helical anchor foundation for high voltage grade transmission lines in plateau area.
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