Real-Time Hybrid Simulation of Damped Transportation Structures

Support structures for traffic signs, luminaires, and traffic signals often rely on flexible elements with low damping. These elements are susceptible to wind-induced vibrations, leading to fatigue and potential failure, which can impact traffic flow and mobility. Current designs involve large structural components and connections, proving inefficient and costly for owners and managers. An economical solution is the use of passive dampers to reduce the size of these structural elements. However, testing such dampers faces limitations in both laboratory settings and open field-testing facilities. This paper presents the outcomes of applying Real-Time Hybrid Simulation to ancillary structures, incorporating a Stockbridge-type passive damper as a viable option for comprehensive testing. Noteworthy advantages include reduced installation effort and time, along with the capability to test a predetermined and broad range of structures.