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Structural Model Calibration of Vierendeel Bridge Based on the Vibration Properties

机译：基于振动特性的Vierendeel桥梁结构模型校准

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In this study the Vierendeel bridge structural model is adopted as a complex structure case study scaled from a real structure located near Cacak city in Serbia. Experimental analysis is conducted under simulation of ambient vibration using shaker device for exciting the model. Frequency Domain Decomposition (FDD) technique is applied using ARTeMIS software extractor to extract the modal properties, natural frequencies and mode shapes. As a comparative study, Enhanced Frequency Domain Decomposition (EFDD) is used to verify the extracted results from FDD. A finite element model is created in ANSYS software to simulate the adopted model to estimate modal properties numerically. Calibration process is implemented to converge the numerically estimated with the experimentally extracted modal properties. Two procedures written in MATLAB environment, for calibration and damage identification, are proposed using heuristics optimization, Simulated Annealing (SA) and Tabu Search (TS). Both of proposed calibration procedures exhibit high accuracy and efficiency due to good convergence between experimentally extracted and numerically updated values of natural frequencies extracted based on ambient vibration measurements.
机译：在这项研究中，vierendeel桥梁结构模型被采用作为塞尔维亚州卡克城附近的真实结构缩小的复杂结构案例研究。使用振动器装置刺激模型的环境振动模拟进行实验分析。使用Artemis软件提取器应用频域分解（FDD）技术以提取模态属性，自然频率和模式形状。作为比较研究，增强频域分解（EFDD）用于验证FDD的提取结果。在ANSYS软件中创建有限元模型，以模拟采用的模型以数字方式估计模态属性。实现校准过程以通过实验提取的模态特性收敛数值估计。使用启发式优化，模拟退火（SA）和禁忌搜索（TS）提出了在MATLAB环境中写入MATLAB环境中的两个程序，用于校准和损坏识别。由于基于环境振动测量提取的实验提取和数值更新的自然频率值之间，所提出的校准程序两者具有高精度和效率。

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