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Linear and nonlinear elastic analysis of closely spaced strip foundations using Pasternak model

Priyanka GHOSH, S. RAJESH, J. SAI CHAND

Frontiers of Structural and Civil Engineering 2017, Volume 11, Issue 2, Pages 228-243 doi: 10.1007/s11709-016-0370-x

Abstract: , an attempt is made to determine the interaction effect of two closely spaced strip footings using Pasternakcarried out by deriving the equations for the interference effect of the footings in the framework of Pasternakthe finite difference method to solve the second order nonlinear differential equation evolved from Pasternak

Keywords： bearing capacity linear and non-linear elasticity foundation interaction effect numerical modeling Pasternak

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Mortarless structures based on topological interlocking

DYSKIN, Elena PASTERNAK, Yuri ESTRIN

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 2, Pages 188-197 doi: 10.1007/s11709-012-0156-8

Abstract: We review the principle of topological interlocking and analyze the properties of the mortarless structures whose design is based on this principle. We concentrate on structures built of osteomorphic blocks – the blocks possessing specially engineered contact surfaces allowing assembling various 2D and 3D structures. These structures are easy to build and can be made demountable. They are flexible, resistant to macroscopic fractures and tolerant to missing blocks. The blocks are kept in place without keys or connectors that are the weakest elements of the conventional interlocking structures. The overall structural integrity of these structures depends on the force imposed by peripheral constraint. The peripheral constraint can be provided in various ways: by an external frame or features of site topography, internal pre-stressed cables/tendons, or self-weight and is a necessary auxiliary element of the structure. The constraining force also determines the degree of delamination developing between the blocks due to bending and thus controls the overall flexibility of the structure thus becoming a new design parameter.

Keywords： topological interlocking fragmented structures segmented structures constraint delamination bending stiffness