Sectional Model Wind Tunnel Test and Research on Wind-Induced Vibration Response of Curved Beam Unilateral Stayed Bridge

Abstract

Sectional model wind tunnel tests and numerical simulation are general methods for studying a curved beam unilateral stayed bridge (CBUSB) to clarify the influence law of the bridge curve linear distribution on wind-induced vibration characteristics of stayed bridges. Aerodynamic force and wind-induced displacement responses are obtained using aerodynamic force and sectional model vibration tests, respectively. Based on experimental results, the finite element model is used to analyze effects of five curvature parameters on the displacement, acceleration, and cable tension of CBUSB. Results show that the displacement and acceleration of wind-induced vibration are restrained as the curvature increases, and the high-order modal vibration of the bridge is stimulated, which shows that the high-frequency vibration reduction should be considered for pedestrian comfort control at high wind speed, and a broadband vibration reduction method can be used.