Experimental study on wind load interference effect of long span coal shed under different influence parameters

Qiansen Wang, Hechen Wang, Yunfei Zheng, Xiongwei Yang, Xiaobing Liu, Huimin Cui, Qingkuan Liu and Shuochen Yang

Abstract

The coal shed serves as a critical infrastructure in industrial operations, ensuring the protection and efficient handling of coal, thereby enhancing operational efficiency and environmental compliance. To examine the impacts of adjacent structures, interference distances, and wind angles on the wind loads acting on large-span coal sheds, a comprehensive experimental study was conducted using a coal shed with dimensions of 460 m x 157 m x 50 m. In this study, two distinct dimensions of interference buildings and five distinct interference distances were established. Wind tunnel pressure measurement tests were then carried out at 19 distinct wind angles to evaluate the influence of these variables on the wind load acting on the coal shed. The findings reveal that when the interfering structures are positioned downstream, the interference leads to an augmentation ranging from 0.15 to 0.30 in the mean shape coefficient of the disturbed coal shed. Notably, variations in building structure dimensions and interference distances exert insignificant influence on this coefficient. Conversely, when the interfering building structures are situated upstream, they exhibit a shielding effect. Specifically, under the influence of a larger structure, the mean and fluctuating shape coefficient of the coal shed undergo the most substantial alteration at 0.125D, whereas for a smaller structure, the most significant effect is observed at 0.75D. The perturbation of the adjacent building structure induces positive wind pressure on the windward surface of the disturbed coal shed, and the wind suction at the wake of the disturbed coal shed increases by 1.6 times. The overall force acting on the disturbed coal shed decreases in the presence of interference effects. However, the impact of the larger structure leads to an increase in the overall force experienced by the disturbed coal shed within a wind angle range of 80° to 120°, attaining a maximum increment of 26%. At equivalent distances, the influence exerted by the larger building is more pronounced. Consequently, the results of this study provide a valuable reference for the wind resistance design considerations of such structures.

Key Words

characteristic value of wind load; interference effect; long-span structure; overall force coefficient; shape coefficient of wind load; wind-tunnel experiment

Address

Qiansen Wang:School of Civil Engineering, Shijiazhuang Tiedao University, Shijiazhuang, 050043, China Hechen Wang:School of Civil Engineering, Shijiazhuang Tiedao University, Shijiazhuang, 050043, China Yunfei Zheng:Department of Railway Engineering, Shijiazhuang Institute of Railway Technology, Shijiazhuang, 050043, China Xiongwei Yang:School of Geology and Engineering, Hebei Geological University, Shijiazhuang, 050031, China Xiaobing Liu:1)State Key Laboratory of Mechanical Behavior and System Safety of Traffic Engineering Structures, Shijiazhuang Tiedao University, Shijiazhuang 050043, China 2)Innovation Center for Wind Engineering and Wind Energy Technology of Hebei Province, Shijiazhuang 050043, China Huimin Cui:1)State Key Laboratory of Mechanical Behavior and System Safety of Traffic Engineering Structures, Shijiazhuang Tiedao University, Shijiazhuang 050043, China 2)Department of Mathematics and Physics, Shijiazhuang Tiedao University, Shijiazhuang 050043, China Qingkuan Liu:1)State Key Laboratory of Mechanical Behavior and System Safety of Traffic Engineering Structures, Shijiazhuang Tiedao University, Shijiazhuang 050043, China 2)Innovation Center for Wind Engineering and Wind Energy Technology of Hebei Province, Shijiazhuang 050043, China Shuochen Yang:School of Civil Engineering, Shijiazhuang Tiedao University, Shijiazhuang, 050043, China

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