铁路弧桥动力试验分析

Waldeli Braz, C. Martins, Cristiana Ortigão, Antonio Couto
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摘要

本文介绍了对巴西一座458米长的帕帕盖奥斯铁路大桥进行的动力监测。这是一座60多年前建造的混凝土拱桥,需要维修。动态监测旨在进行结构完整性评估,并校准用于结构修复设计的数值模型。在选定的位置对桥梁进行了振动测量。本文论述了数据分析、列车入桥时的冲击测量和模态分析。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Railway Arc Bridge Analysis Through Dynamic Tests
This paper presents the dynamic monitoring carried out on a 458 m long railway Papagaios Bridge in Brazil. This is a concrete arch bridge built over 60 years ago, which needed repairs. The dynamic monitoring was designed to carry out a structural integrity assessment and to calibrate a numerical model to be used for the structural rehabilitation design. Vibration measurements were carried out on the bridge in selected locations. This paper addresses data analysis, the impact measurements when a train enters the bridge and modal analysis.
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