Wind load characteristics of large billboard structures with two-plate and three-plate configurations

Dahai Wang , Xinzhong Chen , Jie Li , Hao Cheng

Abstract

This paper presents a wind tunnel study of wind loads of the large billboard structures with two-plate and three-plate configurations. Synchronous dynamic pressures on the surfaces of plates are measured, and the characteristics of local pressures, integrated forces on each individual plate and on the overall structures are investigated. The influences of wind direction and plate configuration on wind load characteristics, and the contributions of overall crosswind load and torque to the stress responses are examined. The results showed that the wind load characteristics of windward plate in both two- and three-plate configurations are very similar. The contribution of overall crosswind load makes the total resultant force from both alongwind and crosswind loads less sensitive to wind direction in the case of three-plate configuration. The overall torque is lower than the value specified in current codes and standards, and its contribution is less significant in both two-plate and three-plate configurations.

Key Words

billboards; wind loading; wind tunnel tests; wind pressures; drag force; torque

Address

Dahai Wang — Department of Civil Engineering, Wuhan University of Technology, Wuhan Hubei, 430070, China; National Wind Institute, Department of Civil, Environmental and Construction Engineering, exas Tech University, Lubbock TX, 79409, USA
Xinzhong Chen — National Wind Institute, Department of Civil, Environmental and Construction Engineering, Texas Tech University, Lubbock TX, 79409, USA
Jie Li — The State Key Laboratory on Disaster Reduction in Civil Engineering, Tongji University, Shanghai, 200092, China
Hao Cheng — Department of Civil Engineering, Wuhan University of Technology, Wuhan Hubei, 430070, China

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