Research on Mechanical Properties and Bearing Capacity of Stainless Steel Tower Base Plates

The base of transmission towers is prone to localized corrosion due to factors such as saline soil erosion， rainwater accumulation， and atmospheric corrosion. Using 304 stainless steel for the base plate can effectively enhance the corrosion resistance of the tower base. Based on the measured stress-strain curve of stainless steel， the R-O， M-R-O， G-R-O， and Q-R-O models were used to fit its constitutive relation， and a constitutive model suitable for 304 stainless steel was determined. The finite element method was used to conduct an in-depth analysis of the mechanical properties of typical four-anchor-bolt and eight-anchor-bolt base plates in transmission towers， examining the influence of base plate thickness， stiffener thickness， and stiffener height on the bearing capacity. The research results showed that the mechanical properties of stainless steel base plates was not inferior to that of traditional Q355 steel base plates， and the thickness of the base plate had the most significant effect on the bearing capacity.