【摘要】 吊装作业常用的吊耳孔承压内壁处的受力情况复杂，对其进行力学分析时合理地施加荷载能够确保求解的准确性。文章结合桥梁吊装工程实例，采用3种不同的荷载施加方式对板式吊耳结构进行有限元仿真模拟，对比分析了吊耳孔承压内壁位置的应力分布情况。建立合适的有限元计算模型，分析钢箱梁与钢箱拱肋节段在吊装过程中吊耳结构的强度，并根据计算结果提出可靠的吊耳结构加固方案，确保整个吊耳结构的安全性。该研究可为大型工程结构的吊装过程提供安全保障。更多还原

【Abstract】 The load at the inner wall of the lifting lug hole commonly used in the hoisting operation is complicated, so reasonable application of load can ensure the accuracy of the results in mechanical analysis. In this paper, the finite element simulation for the plate lifting lug structure is carried out by using three different loading methods based on a bridge hoisting engineering. Then, the stress distribution of the inner wall of the lifting lug hole is compared and analyzed. The strength of different lugs of steel box girder and arch rib in the hoisting process is evaluated by using appropriate finite element model. According to the calculation results, a reliable structure strengthening scheme is proposed, which ensures the safety of the whole lifting lug structure.This study provides a safety guarantee for the hoisting process of large engineering structures.更多还原