Multipurpose algorithm to simulate RC structural members: A finite element macro modeling

IF 1.2 4区工程技术 Q3 CONSTRUCTION & BUILDING TECHNOLOGY

Proceedings of the Institution of Civil Engineers-Structures and Buildings Pub Date : 2023-01-04 DOI:10.1680/jstbu.22.00220

K. Sadeghi, Fatemeh Nouban

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引用次数: 0

Abstract

A nonlinear finite element-macro-element-based multipurpose algorithm to simulate the reinforced concrete (RC) structural members (SMs) “RC-SMs” such as columns, beams, beam-columns, and shear walls under cyclic combined loading is proposed which can be applied for several different types of loading. In the proposed algorithm, the SMs are divided into an appropriate number of macro-elements (MEs) and the surfaces of the critical sections are discretized into a large number of fixed rectangular finite fibers. The proposed algorithm has been validated by comparing the simulated results to the results of the experimental test on full-scale RC-SMs. To illustrate the influence of mechanical properties of materials, the influences of reinforcement percentage, the lateral force orientation angle, and the axial force on the behavior of the SM, a parametric study has been performed. The parametric study allows one to optimize the choices in compliance with the safety and economic criteria in building construction projects. Furthermore, the application of the proposed algorithm illustrates how a heavy axial force makes the SMs brittle, reduces the ductility, imposes a large amount of material loss, and causes the quick failure of the SM.

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钢筋混凝土结构构件仿真的多用途算法:有限元宏建模

提出了一种基于非线性有限元-宏单元的钢筋混凝土结构构件(柱、梁、梁柱和剪力墙)在循环组合荷载作用下的多用途模拟算法，该算法可适用于多种不同类型的荷载。该算法将临界截面划分为适当数量的宏单元，并将临界截面表面离散为大量的固定矩形有限纤维。通过将仿真结果与全尺寸RC-SMs的实验测试结果进行比较，验证了所提算法的有效性。为了说明材料的力学性能、配筋率、侧向力取向角和轴向力对SM性能的影响，进行了参数化研究。参数化研究允许人们在符合安全和经济标准的建筑建设项目中优化选择。此外，该算法的应用说明了大的轴向力如何使SM变脆，降低延性，造成大量的材料损失，并导致SM快速失效。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Proceedings of the Institution of Civil Engineers-Structures and Buildings 工程技术-工程：土木

CiteScore

3.40

自引率

6.20%

发文量

审稿时长

12 months

期刊介绍： Structures and Buildings publishes peer-reviewed papers on the design and construction of civil engineering structures and the applied research associated with such activities. Topics include the design, strength, durability and behaviour of structural components and systems. Topics covered: energy conservation, people movement within and around buildings, strength and durability of steel and concrete structural components, and the behaviour of building and bridge components and systems