湖南大学学报（自然科学版）2016，Vol.43Issue(4)：9-16,8.
刚柔支腿对门式起重机挠度的影响∗
The Effect of Rigid-soft Legs on Mid-span Deflection in Gantry Cranes
摘要
Abstract
In practical application,when the test weight is insufficient,it is urgent to solve the safety and reliability problems of crane structure.The deflection value is one of the key inspection indices of crane girder under rated load-ing in overall test.Therefore,it is very important that the influence of structure parameters on the mid-span deflection is quantified.For large-span and heavy-duty gantry cranes,the effect of rigid-soft legs on mid-span deflection was not considered in the past.So a mathematical model was established for universal large-span and heavy-duty gantry cranes.Considering the coupling effect of the bending moment of girder and legs,the analytical solution was derived and obtained on the basis of the variational principle.Then,the experimental model was designed and experiments were performed on the WEW-600B type testing machine.The experiment data show that the analytical solution of the gantry-frame structure deflection is more accurate than the pre-existing calculation method,which provides an analyti-cal tool for the design and inspection of gantry structures.关键词
门式起重机/挠度/解析解/结构刚度Key words
gantry crane/deflection/analytical solution/structural stiffness分类
机械制造引用本文复制引用
张大鹏,程文明,肖武能..刚柔支腿对门式起重机挠度的影响∗[J].湖南大学学报（自然科学版）,2016,43(4):9-16,8.基金项目
国家自然科学基金资助项目(51175442),National Natural Science Foundation of China(51175442) （51175442）
国家质量监督检验检疫总局科技计划项目(2010QK02) （2010QK02）
