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首页> 外文期刊>Journal of structural engineering >Eccentricity-Based Optimization Procedure for Strength Design of RC Sections under Compression and In-Plane Bending Moment
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Eccentricity-Based Optimization Procedure for Strength Design of RC Sections under Compression and In-Plane Bending Moment

机译：基于偏心度的压弯和平面弯矩下钢筋混凝土截面强度设计的优化程序

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摘要

The strength design of reinforced concrete (RC) rectangular sections for combined compression and in-plane bending with two levels of reinforcement is indeterminate: three unknowns are to be solved, but with only two equilibrium equations; an additional condition is necessary to solve the problem. The additional condition leads to the finding of a minimum reinforcement-concrete ratio. This paper proposes a new approach based on the equivalent eccentricity of the applied compressive load. Different domains are reported, each of which is associated with given values of eccentricity and axial load. Analytical expressions for the domain boundaries are established, and a simple procedure is described to outline the conditions corresponding to the optimal reinforcement. The main advantage of this procedure is its simplicity, which allows manual computations. Some examples employing reinforcement sizing diagrams illustrate the validity of this approach.
机译：钢筋混凝土（RC）矩形截面的压缩和平面内弯曲两种水平组合的强度设计是不确定的：要解决的三个未知数，但只有两个平衡方程。解决该问题还需要附加条件。附加条件导致找到最小的钢筋混凝土比率。本文基于所施加压缩载荷的等效偏心率提出了一种新方法。报告了不同的域，每个域都与给定的偏心率和轴向载荷值相关。建立了域边界的解析表达式，并描述了一个简单的过程来概述与最佳钢筋对应的条件。此过程的主要优点是它的简单性，它允许手动计算。使用增强尺寸图的一些示例说明了这种方法的有效性。

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