Sensitivity Analysis of Steel Keel Bearing of Integral Curtain Wall based on AP Method
The detection of the existing curtain wall structure does not make clear requirements for the selection of the node position of the steel keel adapter.Considering the high redundancy of the overall structure of the steel keel,the importance of each adapter node is not the same.In order to carry out efficient and rapid detection of curtain wall steel keel connectors,it is necessary to reasonably select the detection position of the connector nodes.The importance coefficient,regional importance coefficient and frequency of the four typical steel keel connectors after failure are calculated by using the variable load path method(AP method).The results show that the ratio of the average value of the importance coefficient of the integral curtain wall adapter increases with the increase of the height of the adapter;the importance coefficient of the outermost connector increases with the increase of the ratio of the height of the connector to the overall width of the curtain wall.As the overall height of the curtain wall increases,the importance coefficient of the outer adapter gradually decreases;the importance coefficient of the outer region of the curtain wall is greater than that of the inner region.The regional importance obtained by the equivalent stress and the improved modal sensitivity is in good agreement.
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