中国海上风电进入规模化、高效化开发阶段。支撑海上大型风电机组需要结构性能更好和经济性更优的新型塔架形式。预应力复材双壁风电塔架是香港理工大学研发的一种新型塔架，具有耐久性好、承载力大以及稳定性高等特点，可以提高塔架服役全寿命周期的经济性。以支撑12 MW海上风电机组的预应力复材双壁塔架为实例，基于现行设计规范要求和有限元模型，对预应力复材双壁塔架的结构分析方法和设计过程进行了研究。结果表明：预应力复材双壁塔架的频率能够符合风电机组要求；塔架具有较高的压弯、受剪和受扭承载力，满足承载能力极限状态要求；塔架在正常使用极限状态下的应力、应变、混凝土裂缝宽度及塔顶变形均小于现行规范限值；采用一种简化方法评估了塔架截面的疲劳性能，截面钢管和混凝土均符合疲劳要求。可以为预应力复材双壁风电塔架的设计和工程应用提供参考。

China's offshore wind power sector is rapidly progressing with large-scale and efficient projects. To support large-capacity wind turbines, there is an increasing need for advanced tower structures that offer superior structural performance and economic efficiency. One such innovative solution is the hybrid fiber-reinforced composite materials (FRP)-concrete-steel prestressed double-skin wind turbine towers (PDSWTs) proposed by scholars at The Hong Kong Polytechnic University. PDSWTs boast excellent durability, high load-bearing capacity, and exceptional stability, resulting in the potential to reduce production and maintenance costs throughout the service life. A study on the analysis and design procedures of PDSWTs was presented using a tower that supports 12 MW offshore wind turbine as an example, based on the provisions in current design standards and finite element modelling. The results demonstrate that: the tower successfully meets the frequency requirements of wind turbine; the tower possesses high ultimate resistance under compression-bending, shear and torsional loadings of ultimate limit states; the strain, stress, crack width and tower deformation under serviceability limit states meet the requirements of current design standards; furthermore, a simplified method is proposed to check the fatigue resistance of steel and concrete in the tower sections. The result is expected to provide references for the design and application of PDSWTs.