重大件码头钢桁架平台车有限元分析

针对向家坝重大件码头拟采用的三种不同卸船方式拟定平台车三个荷载工况,分别建立其有限元模型.应力和变形数值计算的结果显示工况三为最不利荷载工况.通过是否设置加劲板的应力、变形对比分析,表明加劲板对于提高结构整体刚度、减小受力和控制变形起到极为有效的作用.提出加劲板间隔布置的优化方案,建立优化模型并进行计算分析,其应力和变形均在规范允许值范围内,满足安全性和经济性的要求,验证了优化方案的可行性.

Finite Element Analysis for Steel Truss Carriage of Heavy Cargo Wharf

Steel truss carriage,which was used as the transfer equipment of heavy cargoes for sloping wharves,had different stress state,because of various handling technology.According to three types of handling technology for Xiangjiaba heavy cargo wharf,three types of working conditions were defined.The third condition was considered the most unfavorable,after the stress and deformation calculation.Through the comparison analysis of setting stiffening plates or not,the conclusion was drawn that the plates were effective on developing the holistic structure rigidity,reducing stress,and controlling deformation.The optimal program was put forward that the stiffening plates should be arranged alternately.The optimal model and computation analysis showed that the alternate arrangement of the plates meet the requirement of the safety and economy.The stress and deformation were under the allowable value of standard code.The optimal program was proved feasible.