Dynamic Response and Vibration Analysis of Overhead Highway Traffic Sign Structures
Disciplines
Education | Mechanical Engineering | Structural Engineering
Abstract (300 words maximum)
Overhead highway signage structures are essential components of transportation infrastructure, continuously exposed to dynamic aerodynamic loads generated by traffic and wind gusts. The cumulative effects of these cyclic loads, particularly from truck-induced wind pressures, can lead to fatigue cracking. Understanding their vibrational and dynamic behavior is therefore critical to ensuring long-term structural performance and safety.
This research investigates the vibration response of overhead sign structures through advanced computational methods. Building on previous analytical and experimental studies of Variable Message Sign (VMS) truss systems and steel hollow-section portal frames, this work reviews prior research conducted on two large-span VMS structures for The Alabama Department of Transportation (ALDOT) and introduces finite element modeling of similar structures in Georgia. Since no comparable research appears to have been conducted in Georgia, this study provides an approximate analysis and foundational reference for such structures in the state.
The study employs Finite Element Analysis (FEA) using Mecway software. Modal analysis was first performed to determine natural frequencies and vibration modes, followed by static analysis under wind-induced loading based on AASHTO guidelines. A parametric study was then carried out by varying member sizes and configurations to assess the influence of geometric parameters on stiffness and frequency response. The results contribute to understanding how design modifications can enhance system resilience and improve overall structural performance.
Beyond its technical focus, this project also serves an educational purpose by enriching undergraduate research experiences in structural engineering. It provides students with hands-on exposure to advanced FEA tools and dynamic analysis methods, strengthening their analytical and problem-solving skills while preparing them for graduate studies or professional practice in structural and research-oriented engineering.
Disclaimer: Portions of this abstract were refined using AI to improve grammar and conciseness. All scientific content, results, and conclusions were developed and verified by the authors.
Use of AI Disclaimer
yes
Academic department under which the project should be listed
SPCEET – Civil and Environmental Engineering
Primary Investigator (PI) Name
Mohammad Jonaidi
Dynamic Response and Vibration Analysis of Overhead Highway Traffic Sign Structures
Overhead highway signage structures are essential components of transportation infrastructure, continuously exposed to dynamic aerodynamic loads generated by traffic and wind gusts. The cumulative effects of these cyclic loads, particularly from truck-induced wind pressures, can lead to fatigue cracking. Understanding their vibrational and dynamic behavior is therefore critical to ensuring long-term structural performance and safety.
This research investigates the vibration response of overhead sign structures through advanced computational methods. Building on previous analytical and experimental studies of Variable Message Sign (VMS) truss systems and steel hollow-section portal frames, this work reviews prior research conducted on two large-span VMS structures for The Alabama Department of Transportation (ALDOT) and introduces finite element modeling of similar structures in Georgia. Since no comparable research appears to have been conducted in Georgia, this study provides an approximate analysis and foundational reference for such structures in the state.
The study employs Finite Element Analysis (FEA) using Mecway software. Modal analysis was first performed to determine natural frequencies and vibration modes, followed by static analysis under wind-induced loading based on AASHTO guidelines. A parametric study was then carried out by varying member sizes and configurations to assess the influence of geometric parameters on stiffness and frequency response. The results contribute to understanding how design modifications can enhance system resilience and improve overall structural performance.
Beyond its technical focus, this project also serves an educational purpose by enriching undergraduate research experiences in structural engineering. It provides students with hands-on exposure to advanced FEA tools and dynamic analysis methods, strengthening their analytical and problem-solving skills while preparing them for graduate studies or professional practice in structural and research-oriented engineering.
Disclaimer: Portions of this abstract were refined using AI to improve grammar and conciseness. All scientific content, results, and conclusions were developed and verified by the authors.