Design optimization of 3D reinforced concrete structures having shear walls
Design optimization of 3D reinforced concrete structures having shear walls
复制标题
具有剪力墙的3D钢筋混凝土结构的设计优化
DOI：
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发表时间：
1998
影响因子：
1.6
通讯作者：
D. Grierson
中科院分区：
文献类型：
--
作者：
M. Fadaee;D. Grierson
本文提出了一种基于计算机的三维钢筋混凝土结构优化设计的方法，该结构的梁承受剪力和弯矩，柱承受双向弯矩、双向剪力和轴向荷载，剪力墙承受纯剪。对于梁和柱，设计变量是构件截面的纵向钢筋的宽度、深度和面积。剪力墙的设计变量是墙的厚度、竖向钢筋的面积、竖向箍筋之间的水平距离、水平钢筋的面积、水平箍筋之间的竖向间距以及竖向抗弯钢筋的面积。最优准则（OC）的方法被应用到最小化的混凝土，钢材和模板的结构的成本。ACI规范[1]中关于梁、柱和剪力墙的强度和延性的规定作为约束条件。这些约束还对梁和柱的尺寸、剪力墙厚度、钢筋面积以及剪力墙箍筋之间的最大和最小垂直和水平间距施加了上限和下限。对梁、柱和剪力墙的内力和截面承载力进行了灵敏度分析。通过算例说明了该设计方法的特点。
This paper presents a computer-based method for the optimal design of three-dimensional Reinforced Concrete (RC) structures having beams subjected to shear force and bending moment, columns subjected to biaxial moments, biaxial shears and axial loads, and shear walls subjected to pure shear. Regarding the beams and columns, the design variables are the width, depth and area of longitudinal reinforcement of member sections. The design variables for the shear walls are the thickness of the wall, the area of vertical reinforcement, horizontal distance between the vertical stirrups, the area of horizontal reinforcement, vertical space between the horizontal stirrups, and the area of vertical flexural reinforcement. The Optimality Criteria (OC) method is applied to minimize the cost of the concrete, steel and formwork for the structure. ACI code [1] provisions concerning the strength and ductility of beams, columns and shear walls are taken as constraints. The constraints also impose upper and lower bounds on the dimensions of beams and columns, and on shear wall thickness, reinforcement area and the maximum and minimum vertical and horizontal spaces between the stirrups of the shear walls. Sensitivity analysis is conducted for both internal forces and the capacities of the sections of the beams, columns and shear walls. The features of the design method are illustrated by a solved example.