Paliradice (Root pile, Micro pile) Technology for Preservation of Historical Islamic Monuments in Cairo Egypt
Paliradice (Root pile, Micro pile) Technology for Preservation of Historical Islamic Monuments in Cairo Egypt
ISBN: 978-88-98161-32-4
Authors: Hemeda Sayed
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Abstract:

The 1992 Dahshour earthquake offered a unique opportunity to verify the knowledge on retrofitting strategies of historic masonry structures which have been developed during the last twenty years. Severe damages were in fact suffered also by those buildings that had already been, and in some cases were still being, repaired and strengthened after the effects of the previous 1992 earthquake - according to the most updated expertise in this field, as it is expressed by the national recommendations. The study of the actual efficiency of current techniques for repairing and strengthening of understructure of the historic masonry is particularly dealt with in the paper. Installation of micropile induces much less vibrations and reduced adverse effects on structure than conventional pile installation. Micropiles can be used if the existing structure has to be expanded or is to be designed for extra lateral, vertical applied loads. They increase bearing capacity and reduce the settlements particularly in strengthening the existing foundations. Historical buildings which have large headroom can be added with an inner extra floor with the help of micropiles without disturbing the building. Micropiles can also be used for stabilization of slopes, to resist uplift in docks, in construction of transmission towers in remote areas. etc. To this scope, the author are carrying out extensive surveys on damaged Islamic historical buildings in order to accurately analyze the observed failure mechanisms. The crucial problems of the structure and materials incompatibility that frequently occurred are particularly taken into account.