摘要
针对桥梁桁架实际设计中,零件结构尺寸、外部载荷的不确定性对结构设计的影响,采用概率设计与有限元技术相结合,通过参数化建模,运用响应面法构造了近似函数,对桥梁桁架弯曲应力和挠度进行了概率设计.与传统的确定性设计结论相比,表明采用概率法对桥梁桁架进行设计,其设计结果更符合实际情况.图3,表1,参8.
Aiming at structural design influence of part physical dimension and uncertainty of exterior load, response surface and several statistic parameter analyse of bridge truss structure bending stress and deflection was proceed by means of probability design and finite element method. FEM model was set up through parameter. Approximation function was constructed by response surface method. The probability design is more effective and more conformable to practical uses. 3figs., ltab., 8refs.
出处
《湖南科技大学学报（自然科学版）》
CAS
北大核心
2007年第4期30-33,共4页
Journal of Hunan University of Science And Technology：Natural Science Edition
基金
国家自然科学基金资助项目(50575072)
湖南省教育厅科研项目(07C280)
关键词
桁架
概率设计
响应面
有限元
truss structure
probability design
RSM
FEM
