基于应变模态的刚构桥损伤诊断分析

随着车流量的不断激增和材料的不断老化,早期修建的桥梁结构承载能力逐渐下降。对结构的损伤进行诊断和恰当评估是健康监测系统的核心,而敏感的损伤指标是损伤诊断能够正确预警的关键。本文以数值分析为基础,选取应变模态参数和频率模态参数,通过对连续刚构桥的损伤诊断分析比较,提供了一种应用于此种桥型的结构健康监测方法。

Damage Detection Research of Rigid Bridge Based on Strain Mode

With the rapid increase of vehicles and materials capability degradation, capacity of bridges built in early stage has been reduced. To detect damage and evaluate structure state properly is the main function of health monitoring system. And sensitive index is the key in correctly early warning. In this paper, based on numerical analysis and the strain mode and frequency mode parameters, a health monitoring method for rigid bridge is provided.