考虑混凝土非线性特性的钢筋混凝土梁静态特性的有限元建模

IF 0.7 Q4 MECHANICS

Studia Geotechnica et Mechanica Pub Date : 2021-07-25 DOI:10.2478/sgem-2021-0012

Maciej Pazdan

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引用次数: 0

摘要

摘要本文提出了一种钢筋混凝土梁的有限元模拟方法。该模型考虑了钢筋混凝土结构的特点，如两种材料(混凝土和钢)之间的相互作用、机械荷载引起的开裂以及荷载增加时杨氏模量的变化。采用混凝土损伤塑性(CDP)模型，在ABAQUS系统中进行了相应的数值有限元分析。杨氏模量随应力强度水平增加而变化的特征来源于作者自己的研究。将有限元计算结果与作者数值杆模型的计算结果进行了比较。

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FEM modelling of the static behaviour of reinforced concrete beams considering the nonlinear behaviour of the concrete

Abstract This paper presents a finite element (FE) method of modelling reinforced concrete beams. The proposed model takes into account the phenomena characteristic of reinforced concrete structures, such as the interaction between two materials (concrete and steel), the cracking caused by mechanical loads and the variation of the Young's modulus under increasing load. A relevant numerical FE analysis was carried out in the ABAQUS system using the concrete damaged plasticity (CDP) model. The character of Young's modulus variation due to increasing stress intensity level was taken from the author's own research. The results of the FE calculations were compared with the results yielded by the author's numerical bar model.

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来源期刊

Studia Geotechnica et Mechanica MECHANICS-

CiteScore

1.30

自引率

16.70%

发文量

审稿时长

16 weeks

期刊介绍： An international journal ‘Studia Geotechnica et Mechanica’ covers new developments in the broad areas of geomechanics as well as structural mechanics. The journal welcomes contributions dealing with original theoretical, numerical as well as experimental work. The following topics are of special interest: Constitutive relations for geomaterials (soils, rocks, concrete, etc.) Modeling of mechanical behaviour of heterogeneous materials at different scales Analysis of coupled thermo-hydro-chemo-mechanical problems Modeling of instabilities and localized deformation Experimental investigations of material properties at different scales Numerical algorithms: formulation and performance Application of numerical techniques to analysis of problems involving foundations, underground structures, slopes and embankment Risk and reliability analysis Analysis of concrete and masonry structures Modeling of case histories