Research On Wind-induced Responses And Interference Effects On Dry Coal Shed

Cylindrical reticulated shell, such as dry-coal shed, is sensitive to the wind load, for it is generally light, flexible and low damping.. Wind load is one of the control loads in the structural design. The interference effects of external dry-coal shed and internal coal straw make the wind-induced response of the dry-coal shed more complicated. So the study of the wind-induced response of cylindrical reticulated shell is an important subject. There is no exact method to calculate the wind-induced response of cylindrical reticulated shell in the current code for the design of building structures, much less work on the interference effects of external dry-coal shed and internal coal straw. In order to provide a systematic method to research the wind-induced responses of Cylindrical reticulated shells, wind-induced response, interference effects and equivalent static wind loads are considered in this paper. The research is mainly focused on the following aspects,1, Research on method for wind-induced vibration computation in time-domain and frequency-domain. The wind-induced responses of the dry-coal shed are calculated by using time-domain method and frequency-domain method, in the condition that the dry-coal shed is located in terrain category B and there is no external shed and internal coal straw, then the displacements of some key nodes calculated by using time-domain method are compared with the displacements calculated by using frequency-domain method. The results of comparison show that the wind-induced responses calculated by using time-domain method are agreed with ones by using frequency-domain method.2, Research on the characteristics of the wind-induced responses of the dry-coal shed. The node displacement and the element internal force of the dry-coal shed are calculated by using frequency-domain method, in the condition that the dry-coal shed is located in terrain category B and there is no external shed and internal coal straw. The mean responses, fluctuating responses, peak responses, gust response factor and the power spectra of some important nodes elements are analyzed in details.3 ,Research on the effect of terrain category and interference effect of external dry-coal-shed and internal coal straw on wind-induced response. The peak interference factors corresponding to node peak displacements and element peak internal forces are studied in details, and then the effects of terrain category and...