American Journal of Civil and Environmental Engineering  
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Influence of Connection Flexibility on the Dynamic Capacity of Semi-rigid Frames
American Journal of Civil and Environmental Engineering
Vol.3 , No. 3, Publication Date: May 31, 2018, Page: 52-58
954 Views Since May 31, 2018, 251 Downloads Since May 31, 2018
 
 
Authors
 
[1]    

Lu Xiaosong, School of Architecture Engineering, Xi’an Technological University, Xi’an, China.

 
Abstract
 

The dynamic response of semi-rigid frames is studied by using a computer program-MATLAB. The connection flexibility is modeled by rigidity index , and advanced deflection-rotation equation is used to build the stiffness matrix of semi-rigid element and frames. Having the same geometry and cross-section semi-rigid frames with different indexes, are examined. The reducing coefficient and lateral rigidity values, representing the real behavior of these frames, are determined. To represent the real behavior, all deformations of a frame are accounted for a dynamic analysis with EI-centro wave. Response characteristics of those multistory frames are compared with reference to their model attributes. The study indicates that connection flexibility tends to increase vibration periods, while it causes vibration frequencies decrease.


Keywords
 

Semi-rigid, Rigidity Index, Deformation-Rotation Equation, Dynamic Response


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