Numerical analysis of damage zones in a bridge

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Numerical analysis of damage zones in a bridge

机译：桥梁损伤区域的数值分析

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Purpose - The purpose of this paper is to present a numerical analysis of structural monitoring for damage zones detection. The study is performed with Ansys finite element software, which reads in batch mode programming a previously generated mesh data file and computes the transient dynamic solution for each time-step iteration within an analysis time range. Design/methodology/approach - The approach itself is applied on a bridge structure which can be potentially subjected to damage zones due to severe loads cases and or earthquakes vibrations. The ideal Von Mises failure criterion ellipsoid envelope is applied for the detection of overstepped computed stresses and strains. Findings - This numerical analysis allows computing, for each time-step iteration, the dynamic displacements at each degree of freedom and the corresponding stresses and strains inside the elements under the action of several times dependent loads cases. Practical implications - Several simulations are considered to quantify the external loads. Originality/value - The material properties of reinforced concrete RC are calculated for an existing specific bridge structure case. The RC strength is then introduced from the basic compounds material properties using the corresponding volumes fractions.

机译：目的-本文的目的是提供用于损伤区域检测的结构监测的数值分析。这项研究是通过Ansys有限元软件执行的，该软件以批处理模式读取以前生成的网格数据文件，并在分析时间范围内为每个时间步迭代计算瞬态动态解。设计/方法/方法-该方法本身适用于桥梁结构，由于严重的载荷情况和/或地震振动，该结构可能会遭受损坏区域的影响。理想的冯·米塞斯（Von Mises）破坏准则椭球包络适用于检测超步计算的应力和应变。研究结果-通过这种数值分析，可以在每个时间步迭代中计算在数个与时间有关的载荷工况作用下，每个自由度的动态位移以及单元内部相应的应力和应变。实际意义-考虑了几种模拟来量化外部载荷。原创性/价值-针对现有的特定桥梁结构案例计算钢筋混凝土RC的材料特性。然后，使用相应的体积分数从基本化合物的材料属性中引入RC强度。

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《International journal of structural integrity》 |2020年第1期|1-12|共12页
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Department of Mechanical Construction and Production University of Sciences and Technology Houari Boumediene Algiers Algeria;

Built Environmental Research Laboratory Department of Structures and Materials Civil Engineering Faculty University of Sciences and Technology Houari Boumediene Algiers Algeria;

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正文语种 eng
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Strengths; Finite element method; Cracks; Damage zones detection; Mixture rules of materials; Reinforced concrete material properties;

机译：优势;有限元法;裂缝;损坏区域检测;材料的混合规则;钢筋混凝土材料性能;

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机译：应用于桥梁数值模态数据的损伤识别算法

Numerical analysis of damage zones in a bridge

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