【摘要】 对岸桥前大梁的结构参数和运行参数进行了同步优化。首先，建立前大梁系统简化力学模型，对比整机有限元模型与简化模型的有限元模型得到前3阶模态频率，验证了简化模型的有效性；其次，为了提高优化过程的计算效率，利用假设模态法及拉格朗日法得到简化模型的动力学方程；然后，以Runge-Kutta法计算得到简化模型的吊重摆角最大值、岸桥前大梁中点处的最大挠度及小车总运行时间为优化目标，采用多目标遗传算法对岸桥前大梁系统的结构参数及小车运行参数进行同步优化，得到Pareto解集；最后，根据系统性能的具体需求从解集中选择合理的解，指导岸桥前大梁系统的结构设计以及小车运行参数的设定，为岸桥防摇提供了一个新的思路。更多还原

【Abstract】 The front girder system of quayside container crane(QCC) is optimized considering the structural and operating parameters simultaneously.First,the simplified mechanical model of the front girder system is established and its validity is proved by comparing the first three modal results of the finite element model of the whole machine and the simplified model.Secondly,in order to improve the computational efficiency of the optimization process,the dynamics equation of the simplified model is gained by combing the assumed modal method and Lagrange equation.Then,taking the maximum load swing angle of the simplified model calculated by the Runge-Kutta method,the maximum deflection at the midpoint of the front girder and the total running time of the trolley as the optimization objective functions,the multi-objective genetic algorithm is used to calculate the structural and trolley operation parameters of the front girders of the QCC,and the Pareto optimal set is obtained.Finally,according to the specific requirements of the system performance,a reasonable solution is chosen from the set,which will guide the structural design of the front bridge girder system and the setting of the trolley operating parameters,and provide a new idea for antiswinging of the QCC.更多还原