FOUNDATION INHOMOGENEITY IDENTIFICATION BASED ON GENERALIZED RIGID MODAL ANALYSIS OF FREE BEAM ON FOUNDATION

摘要：

The rigid modal of free beam on inhomogeneous foundation was calculated,and the variable regularity of modal frequency and modal shape with the inhomogeneous foundation was analyzed in this paper. Because of the inhomogeneity of Winkler foundation and bedding reaction coefficient,the frequencies and shapes of rigid modal varies. As the varying characteristics of rigid modal were studied,the foundations varying trend and degree could be identified. In order to considering the affection of soil under and around the beam,double-parameter foundation model was introduced. Based on Hamilton principle and calculus of variation,the vibration equation of beam on double-parameter foundation was deduced and significance conclusions were drawn,such as,the foundation parameters and its inhomogeneity can be identified.

关键词： Double-parameter foundation Free beam Rigid modal Inhomogeneity identification

作者: Wang-Xi Zhang Wei-Jian Yi Xiao Yan Meng Liu

作者单位: College of Civil Engineering,Hunan University,Changsha 410082,P.R. China College of Civil Engineering,Hunan University,Changsha 410082,P.R. China Department of Civil Enginee

会议类型: 国际会议

会议名称: The Eleventh International Symposium on Structural Engineering(第十一届结构工程国际研讨会)

会议地点: 广州

会议语种:英文

页码: 915-921

在线出版日期: 2010-12-01（万方平台首次上网日期，不代表论文的发表时间）