【摘要】 在梁中开孔能够进一步满足结构功能要求 ,其中开孔参数的设计是重要一步 笔者在预应力开孔梁最新研究成果的基础上 ,用模糊规划方法 ,以开孔参数为设计变量 ,将预应力梁力学特性回归方程、应力强度计算公式转化为模糊约束函数 ,从而建立模糊优化模型 ,对开孔尺寸进行优化设计 ,得到基于模糊综合评判的最优解答 ,所得计算结果对工程应用中预应力开孔梁设计具有参考价值更多还原

【Abstract】 The openings of prestressed concrete beams can meet better the demand for the function of the architectural structure in which design of opening parameters of the beam is very important.For this reason ,a model of fuzzy optimization is established by means of fuzzy programming based on the latest research results of prestressed concrete beams with openings.In the model,opening parameters are defined as variables of design,and regression equation of mechanical characteristics of prestressed beams with openings and computational formula of stress are transformed into fuzzy constraint functions. Then based on comprehensive fuzzy evaluation the opening dimension is optimized and optimal results are obtained .The results show that the method given in this paper is practical and convenient,and can be used for engineering design directly.更多还原