Abstract:A methodology to seek a network graph s P-gravity center utilizing graph theory was used to study optimal sensors locating for wind-induced responses measurement of tall buildings. Firstly, the measured data of high–rise buildings bearing wind loads were collected, then these data were processed, the tall building was simplified as a layer model, and the model was converted into a network graph. The graph s parameters, such as, vertex weighting, boundary value and weighted distance matrix were calculated. Finally, the gravity center of the graph was calculated with the algorithm to seek the lower bound of P-gravity center. The obtained gravity center was analyzed to determine sensorslocations. An example of tall building was used to illustrate this method . After optimizing sensors locating, the tallbuilding responses new information was obtained. With the new information, the structure s flexibility function wascomputed and compared with the known optimal value of the structure’s flexibility function. It was shown that both of them agree well; so the proposed method has a good accuracy and the optimal sensors locating problem is well solved.
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