Response of Structures to Time-Varying Wind Loads

by Arthur N. L. Chiu, (M.ASCE), Prof. of Engrg.; Univ. of Hawaii, Honolulu, HI,

Serial Information: Journal of the Structural Division, 1970, Vol. 96, Issue 2, Pg. 381-391

Document Type: Journal Paper


Dynamic responses of a free-standing latticed floodlight tower are determined for time-varying wind forces derived from available wind data and also from simulated wind records. The structure is represented by an idealized lumped-mass system in the analysis. All computations were performed on a digital computer. The computed results compared fairly well with observed responses; these results also showed that, for all practical purposes, effects of modes higher than the second mode may be neglected in the analysis. The wind data simulation procedure permits the following to be included: (1) power-law velocity profile; (2) random fluctuations of velocity and yaw; (3) constant or time-varying mean velocity patterns; and (4) gusts. Data simulated in this manner may be used for dynamic analysis.

Subject Headings: Wind loads | Wind speed | Velocity profile | Structural response | Load factors | Wind forces | System analysis | Computing in civil engineering

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