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Evaluating the Load Carrying Capacity of Aged Bridges in Consideration of the Functional Deterioration of Point Parts  

Yang, Seung-Hyun (조선이공대학 토목건설과)
Publication Information
Journal of the Korean Society of Hazard Mitigation / v.10, no.2, 2010 , pp. 15-21 More about this Journal
Abstract
Structural analysis used to evaluate the load carrying capacity of a bridge should implement behavioral characteristics similar to the actual behaviors of the structure through loading tests, but it is not feasible in many cases due to the behavioral characteristics of points, inadequate modeling method in structural analysis, errors in loading tests, changes in strength and rigidity resulting from cross-sectional damage, etc. This problem can be more serious if bridge bearings have been damaged or were not installed and, consequently, the bearings do not function properly. This study produced results similar to actual behaviors using a structural analysis model built with support moment derived from the difference $\Delta{\delta}$ between measured deflection obtained by confining the cantilever segment of a solid beam and calculated deflection under a unrestrained condition. When the load carrying capacity of a bridge in operation was evaluated in consideration of the confinement condition of supports, the result was 15~19% lower than load carrying capacity calculated by the existing method.
Keywords
Load Carrying Capacity; Bridge Bearing; Support Moment; the confinement condition of supports;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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