Author(s)

D. Makovička & D. Makovička Jr.

Abstract

This paper deals with the response analysis of a rubber vibro-base insulated building structure, based on a foundation pile structure. An elastic rubber course separates the upper and lower parts of the foundation plate and the footings. The structure is loaded by groundborne vibrations from an underground railway system. The actual history of the dynamic load measured on the pile heads was used as input data for the design of the vibro-base insulation and for a dynamic analysis of the structure. The whole bearing structure, subdivided into floor plates, columns, walls and girders, was taken into account in the structure calculation model. The rubber bed was modelled as Winkler-Pasternak supports in the part of the foundation plate and the elastic supports of the columns and walls. The floor vibrations are predicted and compared with the non-insulated state of the building. The vibro-base insulated structure fulfils the standard requirements for limit vibration level for a residential structure. In the conclusion, the methodology for vibro-base insulation is evaluated. Keywords: dynamic analysis, technical seismicity, vibro-base insulation, rubber. 1 Introduction The dynamic effects of subsurface traffic propagating through the ground environment into the ambient buildings of urban agglomerations have been acquiring ever increasing importance. Construction firms try to use the areas in the proximity of underground lines because of their lucrative location, usually for residential construction. It is these structures erected in the proximity of

Keywords

dynamic analysis, technical seismicity, vibro-base insulation, rubber.