【摘要】 研究了全约束条件下的钢筋混凝土矩形截面单筋梁离散变量优化设计。以符合设计条件的梁截面尺寸 ,主筋直径、根数 ,箍筋直径、间距为设计变量 ;以规范对单筋梁的正、斜截面强度、挠度、裂缝宽度及构造等要求为约束条件 ;以梁的单位长度造价为目标函数所进行的计算结果表明 ,优化方案是最佳的更多还原

【Abstract】 The paper introduces the optimum design of reinforced concrete beam with discrete variables full constraints. The design variables include the size of beam section, rebar diameter and quantity of reinforcement, diameter and span of stirrup. The constraint conditions are all design requirements in the code (including bearing capacity, deflection and crack width etc.). The objective function is the cost of the beam per meter. The calculation result has proved the optimum scheme best.更多还原