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Dynamic Analysis for Soil - Structure Systems Using Dynamic Stiffness | ||
| Engineering and Technology Journal | ||
| Article 3, Volume 24, Issue 5, May 2005, Pages 456-471 PDF (2.53 M) | ||
| Document Type: Research Paper | ||
| DOI: 10.30684/etj.24.5.1 | ||
| Author | ||
| Mohamad Jawad K. Essa | ||
| Dep. of Civil Engineering, University of Basrah, Basrah-IRAQ. | ||
| Abstract | ||
| Abstract This paper gives exact dynamic stiffness coefficient for beam element with axial force embedded in elastic medium having normal and tangential soil reactions . These moduli of subgrade reactions are assumed to be constants along the length of the element . The axial and flexural stiffnesses are assumed to be uncoupled . The paper concerns on finding the natural frequencies and corresponding modal shapes of plane frames partially embedded in the soil . The variation of the eigenvalues and the eigenvectors by the soil modulus are studied . These eigenvalues and eigenvectors are compared with those when static matrix method is used . Finally , the dynamic response of a multi - story reinforced concrete building frame to blast loading are also considered . | ||
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