【摘要】 以巨型浮式起重机的金属结构为主要研究对象,采用动态特征值法对浮式起重机工作状态下的吊重、风和波浪载荷进行动力稳定性分析,得到六种载荷工况下的载荷比例系数和临界载荷。研究结果表明,风载荷和波浪载荷不会使浮式起重机结构发生失稳。吊重载荷的静力稳定性载荷比例系数是动力结果的3倍多,动、静力分析的结果相差较大,所以有必要对巨型浮式起重机进行动力稳定性分析。更多还原

【Abstract】 The dynamic stability of giant floating crane under working condition was worked out by using dynamic eigenvalue method.Load proportional coefficient and buckling load was obtained by dynamic and eigenvalue stability analysis under different combinations of lifting load,wind load and wave load.The calculation result shows that wind load and wave load hardly cause structural buckling compared to lifting load via their load proportional coefficient value.For lifting load eigenvalue buckling,its load proportional coefficient is more than 3 times the value of dynamic stability analysis,and the big difference between two analyses makes it necessary to analyze the dynamic stability for giant floating crane.更多还原