№3(59)
September 2017
ISSN
1990-4126

Russian

«Architecton: proceedings of higher education» № 37 March 2012

City as ecosystem


Gulyaev Alexander N.

Senior Researcher, Laboratory of Seismometry,
Institute of Geophysics, Ural Division of the Russian Academy of Science,
Ekaterinburg, Russia usc_alex@mail.ru

Osipova Anastasia Yu.

PhD (Geology and Mineralogy), Assistant Researcher,
Seismometric Laboratory Institute of Geophysics,
Ural Division of the Russian Academy of Sciences,
Ekaterinburg, Russia

ZONING OF NIZHNY-TAGIL CITY TERRITORY IN SVERDLOVSK OBLAST BY ESTIMATED SEISMIC IMPACT


Schematic zoning by estimated seismic impact has been performed for the territory of the city of Nizhni Tagil, most of which is represented by residuum mantle rocks classified as Category 2 in terms of their seismic properties according to SNiP II-7-81* code. The seismic impact is estimated at 6 points by the MSK-64 scale for standard (mass construction) buildings and critical structures, and at 7 points for especially critical structures.

In the peripheral part of the city with predominantly Category 1 rocks in terms of their seismic properties according to SNiP II-7-81** code, this impact is estimated at 5 points by the MSK -64 scale for standard (mass construction) buildings and critical structures and at 6 points for especially critical structures.

In small-size sites in the river flood plain and in the boggy tectonic denudation depressions, which feature the most adverse rocks of Category 3 in terms of seismic engineering properties, the impact is estimated at 7 points for standard (mass construction) buildings and critical structures and 8 points for especially critical structures. Typically, adverse rocks are removed from the foundation of a structure to be built and are replaced, where necessary, with more suited coarse technogenic rocks.

Generally, the seismic engineering conditions in the territory of Nizhni Tagil are favourable and safe for the majority of civil engineering structures. An exception is areas that have been rendered weak by underground mine workings, where there is a risk of caving.

Key words: seismic conditions, rocks, foundations, earth’s crustal deformation, faults, seismic zoning


Russian text of this article

ISSN 1990-4126  Registration MCM el. № ФС 77-70832 of 30.08.2017 © USUAA, 2004-2017  © Architecton, 2004-2017