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GONG Yao-qing, LI Ke. SEMI-ANALYTICAL ANALYSIS FOR FREE VIBRATION OF SUPER TALL BUNDLED-TUBE STRUCTURES WITH SUBGRADE DEFORMATION[J]. Engineering Mechanics, 2008, 25(8): 97-103.
Citation: GONG Yao-qing, LI Ke. SEMI-ANALYTICAL ANALYSIS FOR FREE VIBRATION OF SUPER TALL BUNDLED-TUBE STRUCTURES WITH SUBGRADE DEFORMATION[J]. Engineering Mechanics, 2008, 25(8): 97-103.
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SEMI-ANALYTICAL ANALYSIS FOR FREE VIBRATION OF SUPER TALL BUNDLED-TUBE STRUCTURES WITH SUBGRADE DEFORMATION

  • (1. School of Civil Engineering, Henan Polytechnic University, Jiaozuo 454000, China; 2. Department of Civil Engineering, Anyang Institute Technology, Anyang 455000, China)

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  • Received Date: December 31, 1899
  • Revised Date: December 31, 1899
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    • Abstract
  • This paper establishes a semi-analytical three-dimensional model for the super tall bundled-tube structure considering interactions between the subgrade, foundation and the superstructure. It is a combination of stiffened-thin-walled tubes with continuously distributed mass and stiffness, and supported on the semi-infinite elastic subgrade. The free vibration analysis of the model is, by principle of energy, transformed into solving eigenvalues of a set of ordinary differential equations (ODEs). The eigenvalues are solved by COLSYS, an ODEs solver. The efficiency and accuracy of the simplified semi-analytical model are verified by an example, and some conclusions are obtained.
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