AP1000机组安全壳吊索吊装法有限元分析

Analysis of Rigging Lifting for AP1000 Containment Vessel Module by Finite Element Method

AP1000机组安全壳采用模块化建造并采用吊梁法进行吊装,吊装过程中的变形和应力控制尤为关键。文中提出了一种改进的吊装方案-吊索吊装法,通过ANSYS建模分析,研究吊耳位置和吊索根数对吊装时变形和应力的影响。对比2种吊装方法的最大变形和最大等效应力,验证了吊索吊装法的可行性。吊索吊装法进一步减小了吊装时的变形和应力,有利于提高安全壳的安装质量,降低建造成本。

Containment vessel of API000 is built by modules, and the deformation and stress should be strictly limited when module is lifted. During the AP1000 project, the containment vessel module is lifted by lifting beam. A new lifting method called rigging lifting was proposed in this paper. The module lifting was modeled in ANSYS and analyzed by finite element method, the effect of lifting lug location and rigging number on deformation and stress was studied. The maximum deformation and maximum equivalent stress of two lifting methods was compared, and rigging lifting method was proved to be feasible. The rigging lifting method can reduce the maximum deformation and maximum equivalent Stress of containment modules, improving the quality of containment vessel and reducing the construction cost.