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首页> 外文期刊>Structural Control and Health Monitoring >Structural condition assessment of a bridge pier: A case study using experimental modal analysis and finite element model updating
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Structural condition assessment of a bridge pier: A case study using experimental modal analysis and finite element model updating

机译：桥墩结构条件评估 - 用实验模态分析和有限元模型更新的案例研究

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摘要

Insufficient information on existing bridge substructures and foundations poses significant challenges for structural condition evaluation and can cause significant uncertainties for the safety and serviceability of bridges. Characterization and condition evaluation of bridges substructure and foundations will not only help to decrease the vulnerability to natural hazards but also provide opportunities for their reuse with considerable benefits. In this paper, the feasibility of leveraging structural identification techniques to characterize bridge substructures and foundations is investigated. A three-span simply supported bridge located in Mossy, West Virginia, USA, is used as a study case. Modal analysis and finite element model updating techniques are used to investigate and estimate the uncertainties and conditions of the substructure. Updated finite element model for this structure provides valuable information for bridge condition assessment and proves how structural identification is a viable tool for the case considered.
机译：关于现有桥梁子结构和基础的信息不足，对结构状况评估产生重大挑战，并且可能对桥梁的安全性和可维护性造成重大的不确定性。桥梁子结构和基础的表征和条件评估不仅有助于降低对自然灾害的脆弱性，而且还提供了具有相当大益处的重用的机会。本文研究了利用结构识别技术来表征桥梁子结构和基础的可行性。一个三跨的简单支持的桥梁位于美国西弗吉尼亚州的苔藓，用作学习案例。模态分析和有限元模型更新技术用于研究和估计子结构的不确定性和条件。更新的该结构的有限元模型为桥接条件评估提供了有价值的信息，并证明了结构识别是如何考虑的案例的可行工具。

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