预应力锚杆基础非线性抗拔承载力研究

摘要

The uplift capacity of the prestressed anchor foundation is an important guarantee for the safety of structure . The prestressed anchor foundation of wind turbine was selected as the research object and the nonlinear finite element analysis was carried out based on the software of ABAQUS to study the uplift capacity .According to the mechanical char-acteristics of anchors ,a single anchor finite element model including rock ,mortar ,anchor and concrete was established . The uplift capacity of the prestressed anchor foundation was obtained under three scenarios with different values of cohe-sion and internal friction angle .It is concluded that the prestressed anchor foundation has stronger uplift capacity by com-paring other models without considering concrete with the same load scenarios .%预应力锚杆基础的抗拔承载力是结构安全的重要保证。以风力发电机预应力锚杆基础为研究对象，通过 ABAQUS 进行抗拔承载力非线性有限元分析。根据锚杆受力特点，建立包含岩体、砂浆、锚杆和混凝土的单根锚杆有限元模型。研究了三种不同黏聚力和内摩擦角工况下预应力锚杆基础的抗拔承载力；并通过与相同工况下不包含混凝土的模型计算结果对比，得出预应力锚杆基础具有更高的抗拔承载力。