论文部分内容阅读
本文所述钢筋混凝土受弯构件工字形截面的优化设计是以构件单位长度的造价为目标函数,以截面高度及纵向受拉钢筋面积为设计变量,以现行设计规范(TJ10—74)的设计要求为约束条件的。采用拉格朗日乘子法求得的优化设计公式,计算简单,应用方便。 一、目标函数与约束条件 钢筋混凝土结构构件是由单价不同的材料组成的,它的优化设计以造价为目标函数较为合理。钢筋混凝土受弯构件的造价由混凝土、钢筋及模板三方面的费用组成。对于单位
The optimized design of the I-section of the reinforced concrete flexural member is described in this paper as the objective function of the unit length of the component, the height of the section and the area of the longitudinal tensioned rebar as design variables, and the design requirements of the current design specification (TJ 10-74). For the constraints. The optimized design formula obtained by the Lagrangian multiplier method is simple and easy to use. First, the objective function and constraints Reinforced concrete structural members are composed of different unit prices of materials, its optimal design to cost as the objective function is more reasonable. The cost of reinforced concrete flexural components consists of the cost of concrete, steel reinforcement, and formwork. For the unit