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| Buffeting analysis of space lattice structures based on pseudo excitation method |
| Revised:January 03, 2005 |
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| DOI：10.7511/jslx20066128 |
| KeyWord:pseudo excitation method,space lattice structures,buffeting,wind fluttering factor |
| CHEN Xian-Chuan ZHAO Yang DONG Shi-Lin |
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| Abstract: |
| On the basis of the pseudo excitation method(PEM),the formulas for the calculation of buffeting response for space lattice structures are derived.The partial correlation between wind excitations and the cross-correlation terms between the participant modes have all been involved automatically in the computations.Based on the fact that the PEM solves the root-mean-square displacements of the structure directly,the formulas for the equivalent static wind load and the corresponding wind fluttering factor in terms of loading are obtained,which are applicable to multiple participant modes.A computer program is then developed using the Matlab software,and two numerical examples are provided to verify the correctness of the theoretical derivations and the high efficiency of the program.This study forms sound basis for further systematic study on the wind-induced random vibration response for long-span lattice structures. |
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