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학술저널
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대한토목학회 KSCE JOURNAL OF CIVIL ENGINEERING KSCE JOURNAL OF CIVIL ENGINEERING Vol.10 No.3
발행연도
2006.5
수록면
207 - 217 (11page)

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Variable Message Signs (VMS) have become a new trend in roadway signs. These signs offer an increase in traffic safety by their ability to relay messages to motorists for warnings of hazards ahead such as fog, traffic congestion, accidents, and lane closings. The geometry of these signs sometimes results in significant cyclic loading of the support structure due to wind gusts. This study presents analytical and experimental investigations of bridge-type VMS structures. GTSTRUDL (2003) is used to perform space frame structural analyses of these welded tubular structures. This paper includes measurements from a static filed test and comparisons between the measurements and the structural analyses results. Fatigue evaluations are performed based on the stress ranges from field measurements and structural analyses. According to this comparative study, the fatigue design loadings derived from AASHTO Specifications for Structural Supports for Highway Signs, Luminaires and Traffic Signals (2001) can be conservatively used to evaluate the fatigue life of the bridge-type VMS structures.

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Abstract
1. Introduction
2. Research Scope and Objectives
3. Background and Previous Works
4. VMS Structure Geometry
5. Instrumentations and Data Acquisition
6. Static Pull Down Field Test (Structure-A)
7. Field Tests and Fatigue Evaluation
6. Summary and Concluding Remarks
References

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