Structural Damage Detection Using Curvature Mode Difference Curve

Hang Jing; Ling Ling Jia; Yi Zhao

doi:10.4028/www.scientific.net/AMR.250-253.1248

Paper Titles

Field Test and Analysis on Impact Factor Spectrum for a Continuous Bridge under Random Traffic Flow
p.1226

Large Deflection of Tip Loaded Beam with Differential Transformation Method
p.1232

Study on Geomorphologic Spatial Information Mining and Application
p.1236

Study on Simulation and Stability Analysis of Subway Station Excavation from the Vertical Construction Well
p.1243

Structural Damage Detection Using Curvature Mode Difference Curve
p.1248

Research on the Application of Compound Admixture in the Freezing Mine Shaft Lining Concrete
p.1252

Geological Disasters Induced by Wenchuan Earthquake and Site Selection for Post-Earthquake Reconstruction
p.1256

In Situ Test and Mechanical Analysis of Multi-Arch Tunnel with Large Section in Soft and Weak Rock Mass
p.1262

Model Test on Soil Stress and Displacement Changes Induced by Active Ground Fissure
p.1266

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Structural Damage Detection Using Curvature Mode Difference Curve

Abstract:

Damage detection in civil engineering structures using the dynamic system parameters has become an important area of research. The sensitivity of damage indicator is of great value to structural damage identification. The curvature mode is an excellent parameter in damage detection of structures, while in case that certain curvature mode curve can’t show existence of damage. In this paper, numerical studies are conducted to demonstrate the deficiency of curvature mode to damage detection. Then a new damage indicator called “curvature mode changing rate” (CMCR) is introduced which is processed by numerical differentiation of curvature mode curve. The simulation results show that the new index is superior to curvature mode for structural damage identification, and it is still sensitive to the damaged location in the mode node.