摘要
为了实现混凝土双向板的优化设计,运用拉格朗日函数的方法,以钢筋混凝土双向实心板为模型,以纵向钢筋面积和板厚度为设计变量,以板的造价(包括混凝土和钢筋造价)为目标函数,以正截面强度及挠度变形条件为约束条件,最终推导出板厚度和受力钢筋的优化设计公式,并通过算例进行了验证.结果表明,此优化设计公式在保证板强度及变形要求的同时,可降低造价,实现了板的优化.
In order to realize the optimum design of reinforced concrete two-way slab,using the method of Lagrange function,using two-way solid slab of reinforced concrete slab as model,using area of longitudinal reinforced bar and thickness of board as design variables,using board cost(including the cost of concrete and steel) as the objective function,using normal section strength and deflection deformation as constraints condition,finally,optimization design formula with plate thickness and stress of reinforced bar was derived,and it was verified by an example.The conclusions show that the optimal design formula could meet the board strength and deformation requirements and reduce the cost,and it achieved the optimal design of the board.
出处
《宁夏工程技术》
CAS
2013年第3期259-261,266,共4页
Ningxia Engineering Technology
关键词
混凝土双向实心板
优化设计
降低造价
two-way reinforced concrete slab
optimization design
reduce the cost
