scholarly journals DEVELOPMENT OF AN EARTHQUAKE DAMAGE EVALUATION METHOD FOR BRIDGE STRUCTURES USING ACCELERATION SENSORS

2008 ◽  
Vol 25 (1) ◽  
pp. 25s-32s ◽  
Author(s):  
Hiroshi KOBAYASHI ◽  
Shigeki UNJOH ◽  
Takumi KANOU
Keyword(s):  
Evaluation Method ◽  
Earthquake Damage ◽  
Damage Evaluation ◽  
Acceleration Sensors ◽  
Bridge Structures

An Effective Damage Evaluation Method for Crane Girder Based on SVI and LSSVM

2014 ◽  
Vol 602-605 ◽  
pp. 370-374
Author(s):  
Hong Bo Xu ◽  
Jia Yu Li
Keyword(s):  
Evaluation Method ◽  
Damage Identification ◽  
Health Assessment ◽  
Support Vector ◽  
Damage Evaluation ◽  
Damage Level ◽  
Variation Index ◽  
Stiffness Variation ◽  
Actual Damage

Health assessment of the girder is crucial to an overhead traveling crane. This paper presents an intelligent damage identification method for the girder based on stiffness variation index (SVI) and least squares support vector machine (LSSVM). In the method, the SVI indicators, which have high resolution to environmental noise, serve as the damage feature to detect damage locations. Moreover, the SVI indicators are input to the LSSVM classifier for identifying the actual damage level of the girder. A case study on girder damage identification demonstrates that the method could determine the actual conditions of the girder structure accurately.

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