浪溅区局部腐蚀对单桩基础承载特性影响的数值模拟

基于Abaqus桩基数值模型，对浪溅区局部腐蚀下的大直径钢管桩承载特性进行数值模拟分析。结果表明：局部腐蚀对单桩基础水平承载特性影响显著，对竖直承载特性的影响忽略不计；在水平载荷作用下，随着腐蚀深度的增加，应力集中范围自腐蚀区上端逐渐扩大至腐蚀区下端，且应力在腐蚀区中心达到峰值；在竖直载荷作用下，随腐蚀深度的增加，应力集中范围自腐蚀区中心向未腐蚀区扩展。研究结果可为海上风电单桩基础的防腐措施提供理论支持。

Numerical Simulation of Influence of Local Corrosion in Splash Zone on Bearing Characteristics of Single Pile Foundation

The numerical simulation of the bearing characteristics of large-diameter steel pipe piles under local corrosion in the splash zone is carried out based on Abaqus pile foundation numerical model. The result show that: the local corrosion is of significant influence on the horizontal bearing characteristics of single pile foundations, however, the effect on the vertical bearing characteristics is ignorable; under the action of horizontal load, as the corrosion depth increases, the range of stress concentration gradually expands from the upper end of the corrosion zone to the lower end of the corrosion zone, and the stress reaches the peak at the center of the corrosion zone; under the action of vertical load, as the corrosion depth increases, the stress concentration range extends from the center of the corrosion zone to the uncorroded zone . The research results can provide theoretical support for anti-corrosion measures for offshore wind power single pile foundations.