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| Research on parameter identification of structure with unknown top-floor load and wind load |
| Revised:September 17, 2002 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20042038 |
| KeyWord:parameter identification,wind load,concentrated load,unknown input |
| Zhao Xin \ Li Jie~* |
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| Abstract: |
| This article focus on the parameter estimation problem of structures subjected to unknown top-floor load and wind load simultaneously. Based on the identification equation of the problem, a direct elimination method is proposed to estimate the parameters of structure with unknown top-floor load. Unknown loads can readily be obtained after the parameters are estimated. For structures subjected to unknown wind load, a direct substituting procedure is developed. Under the presupposition that wind load of adjacent floors are totally dependent, the physical parameters can be identified and the wind load can be reconstructed consequently. For structures subjected to unknown top-floor load and wind load simultaneously, the structural parameters can be obtained using direct elimination method and direct substituting procedure synchronously. Numerical example is given to illustrate the effectiveness of the proposed methods, and the influences of noise are discussed in the last part of the paper. |
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