Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/25527
Title: Time-varying wind load identification from structural responses
Authors: Law, SS
Bu, JQ
Zhu, XQ
Keywords: Dynamic
Wind load
Guyed mast
Response
Finite element model
Equivalent model
Displacement
Regularization
Simulation
Identification
Issue Date: 2005
Source: Engineering structures, 2005, v. 27, no. 10, p. 1586-1598 How to cite?
Journal: Engineering structures 
Abstract: This research identifies the time-varying wind load from the responses of a structure. The fluctuating wind speed process is simulated as an ergodic multivariate stochastic process. The identification equation is formulated in state space, and it is solved with regularization to obtain the wind load from simulated structural responses. A modified iteration scheme is further proposed to improve the identified results. A 50 m guyed mast is selected as an example to validate the effectiveness of the proposed method. Numerical simulations indicate that the proposed method can be used to identify wind load accurately and effectively over the full height of the structure from the structural displacement or strain responses, and only two displacement or strain responses in two orthogonal directions at a reference level are needed to obtain accurate results.
URI: http://hdl.handle.net/10397/25527
ISSN: 0141-0296
DOI: 10.1016/j.engstruct.2005.05.007
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