目的 深入认识非标包装箱承力钢结构框架的力学特性，避免发生包装箱失效事件。方法 基于弹塑性力学，利用数值计算软件建立足尺度产品–框架互作用非线性有限元模型，研究框架在不同工作环境下的力学特性。结果 包装箱采用六吊点起吊与采用四吊点起吊相比，采用六吊点起吊框架安全性更高、疲劳寿命更长、变形量更小。当产品载荷接近包装箱设计载重时，六吊点起吊方式为优选方案。起吊和堆码工况框架失效均主要体现为强度失效，危险位置为型钢对接尖角应力集中处，对该位置进行局部加强可提升框架的载重能力。结论 所研究非标包装箱能够满足项目的装箱和运输需求，与常规装箱运输方案相比，具有明显的经济效益，建议研究对象起吊加速度小于1g。

The work aims to deeply understand the mechanical performance of the load-bearing steel structural frame of non-standard packaging box, so as to avoid the failure of packaging box. Here, a non-linear finite element (FE) model of the product-frame interaction was established based on the elastoplastic mechanics by numerical software, and the mechanical performance of the frame under different working environments were studied. In the packaging box, the frame with six lifting points had higher safety, longer fatigue life and less deformation than that with four lifting points. When the product load was close to the designed load of the packaging box, the lifting method with six lifting points was the best choice. The frame failure under lifting or stacking conditions was mainly reflected in strength failure, and the dangerous position was the stress concentration of the butt sharp angle of the section steel, and the load capacity of the frame could be improved by local strengthening at this position. The non-standard packaging box proposed can meet the packaging and transportation requirements of the project, and has obvious economic benefits compared with the conventional packaging and transportation scheme. It is suggested that the lifting acceleration of the research object should be less than 1g.