Browse > Article

Fatigue Field Test of Variable Message Sign Structure and Evaluation of AASHTO Specifications  

Park, Jong Sup (상명대학교 토목환경공학부)
Publication Information
Journal of Korean Society of Steel Construction / v.18, no.1, 2006 , pp. 11-22 More about this Journal
Abstract
Message Signs (VMS) structures offer an increase in traffic safety through their ability to relay massages to motorists for warnings of hazards ahead, traffic congestion, accidents, and lane closings. The geometry of these signs sometimes results in the significant cyclic loading of the supports structure due to wind gusts, which can result from passing trucks or from natural wind. This study presents the results of analytical and experimental investigations of VMS structures. The commercially available softwareGTSTRUDL (2003) was used to perform space-frame structural analyses of these welded tubular structures. Fatigue evaluations were performed using stress ranges from field measurements and from structural analyses. Based on the results of the structural analyses that were conducted, where fatigue design loadings that had been derived from AASHTO Specifications for Structural Supports for Highway Signs, Luminaries, and Traffic Signals (2001) were used, the structures that had been studied were found not to have infinite fatigue life. According to the limited measurements that were made in this study, the fatigue design loadings derived from AASHTO Specifications (2001) appear to be conservative, but they are not overly conservative. The results of this study should be used to make a reasonable design of VMS structures, and to maintain their standards.
Keywords
VMS structures; fatigue life; fatigue limit; fatigue field test; wind load;
Citations & Related Records
연도 인용수 순위
  • Reference
1 한국도로공사(2004). 고속도로공사 전문시방서. 성남시, 경기 도
2 American Association of State Highway and Transportation Officials (1994). Standard Specifications for Structural Supports for Highway Signs, Luminaires, and Traffic Signals. Washington, D.C., USA
3 American Association of State Highway and Transportation Officials (AASHTO) (2004). LRFD Bridge Design Specifications, Third Edition, Washington, D.C. USA
4 Dexter, R. J., and K. W. Johns, (1998). Fatigue Related Wind Loads on Highway Support Structures, Final Report to New Jersey Department of Transportation, ATLSS Report No. 98‐03, Lehigh University. Pennsylvania, USA
5 Fisher, J.W, Nussbaumer, A., Keating, P.B. and Yen, B.T.(1993). Resistance of Welded Details under Variable Amplitude Loading, NCHRP Report 354, National Cooperative Highway Research Program, USA
6 Dexter, R. J., and M. J. Ricker, (2002). Fatigue‐Resistant Design of Cantilevered Signal, Sign, and Light Supports, NCHRP Report 469, National Cooperative Highway Research Program, USA
7 Peronto, J.L. (2003). High-Cycle Constant Amplitude Fatigue Life Variability of Welded Round HSS Y-Joints. Master's Thesis, Marquette University, Wisconsin, USA
8 Kaczinski, M. R., R. J. Dexter, and J. P. Van Dien, (1998). Fatigue‐Resistant Design of Cantilevered Signal, Sign, and Light Supports, NCHRP Report 412, National Cooperative Highway Research Program, USA
9 American Association of State Highway and Transportation Officials (AASHTO) (1996). Standard Specifications for Highway Bridges, Sixteenth, Washington, D.C. USA
10 Officials (1994). Standard Specifications for Structural Supports for Highway Signs, Luminaires, and Traffic Signals. Washington, D.C., USA
11 Fisher, J.W. (1984). Fatigue and Fracture in Steel Bridges: Case Studies. John Wiley and Sons. New York
12 Froud, H.F., Calvert, E.A., and Nunez E. (1998). Structural Supports for Highway Signs, Luminaires, and Traffic Signals, NCHRP Report 411, National Cooperative Highway Research Program, USA
13 GTSTRUDL (2003). User Guide, Georgia Institute of Technology, Atlanta, Georgia, USA
14 박상명, 이병주, 김명수, 낭궁문(2002). '유고정보 제공시 교통 류 변화에 의한 가변정보판의 유효성 검증.' 2002년 학술 발표회 논문, 대한토목학회, pp125‐128