Ural State University of Architecture and Art

ISSN 1990-4126

Authors

Gulyaev
Alexander
N.

Senior Researcher, Laboratory of Seismometry, Institute of Geophysics,
Ural Division of the Russian Academy of Science

Russia, Yekaterinburg, e-mail: usc_alex@mail.ru

PUBLICATIONS

Gulyaev Alexander N.
SEISMIC ENGINEERING SAFETY OF THE URALS

Architecton: Proceedings of Higher Education №4 (60) December, 2017

The subject-matter of this research is the seismicity of the Urals and adjacent parts of the Eastern European platform (EEP) and Western Siberian slab. The research objective is to estimate the seismic engineering safety of the region under consideration. The research methodology includes gathering and synthesizing data on the seismic observations of the region and current tectonic activity and detailed seismic zoning. The conclusion is made that the region is safe from the seismic engineering point of view. This conclusion is supported by the low seismic activity in the region due to the low tectonic activity of the Ural earth crust and adjacent areas of th EEP and the Western-Siberian platform in the early modern period and at the present time. Moreover, the modern Ural mountain belt is located in the centre of Eurasia far outside of the modern seismic regions containing the destructive earthquakes centers. The results of this research work have been used in the detailed seismic zoning of the Urals and adjoining EEP and the Western-Siberian platform. In the the conclusion, the author states that the region under consideration is safe in seismic engineering terms and that the design and construction of civil engineering projects in the Urals and adjoining EEP and Western-Siberian platform does not require any anti-seismic measures to be taken.

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Gulyaev A.N. SEISMIC ENGINEERING SAFETY OF THE URALS [Online] //Architecton: Proceedings of Higher Education. – 2017. – №4(60). – URL: http://archvuz.ru/en/2017_4/18 

Gulyaev Alexander N.
DETAILED SEISMIC ZONING OF THE CENTRAL PART OF THE URALS REGION

Architecton: Proceedings of Higher Education №4 (48) December, 2014

Engineering facilities in the Middle Urals are exposed to some adverse natural factors, one of which is rare but perceptible earthquakes of intensities from 3–4 to 5–6 by the MSK-64 scale. These earthquakes are accompanying the ongoing formation of new Ural mountains and make up the subject-matter of our study.

The objective of the study is to contribute to the seismic safety of engineering facilities in the central part of the Ural region. To this end, a detailed seismic zoning map of the Ural region’s central part has been carried out, the results of which can be useful for estimating the strength of a seismic impact on engineering facilities to be constructed or reconstructed.

The seismic zoning methodology was based on the use of available data on perceptible seismic shocks in the Middle Urals and on the use of the seismo-tectonic (seismo-geological) approach.

The seismic zoning of the central part of the Ural region has helped identify a potentially seismic area within which natural earthquakes of intensity up to 5–6 by the MSK-64 scale are likely to happen. The area covers the Middle Urals and adjoining parts of the Northern and Southern Urals extending in the northwest direction corresponding to the direction of the basic geological tectonic structures of the region.

The seismic zoning map of the Middle Urals is recommended to be used for estimating the degree of seismic impact on engineering facilities to be built or to be reconstructed.

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http://archvuz.ru/en/2014_4/24/

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Gulyaev A.N. DETAILED SEISMIC ZONING OF THE CENTRAL PART OF THE URALS REGION [Online] //Architecton: Proceedings of Higher Education. – 2014. – №4(48). – URL: http://archvuz.ru/en/2014_4/24 

Gulyaev Alexander N., Osipova Anastasia Yu.
SEISMICITY IN THE MIDDLE URALS AND BUILDING IN THE REGION

Architecton: Proceedings of Higher Education №2 (42) June, 2013

The article provides a characteristic of seismicity in the central part of the Ural region and its impact on engineering structures for the purpose of contribution to the seismic safety of engineering structure, both built and planned for building or reconstruction.

Data gathering and processing have been carried out concerning the seismicity of the central part of the Ural region, maps of observed tremor magnitudes during 1788-2010 have been compiled, and analysis of spatial location of the epicentres of notable earthquakes (a score of 3-4 by the MSK-4 scale and over), as well as distributions of earthquake magnitudes and intensities in time have been estimated. These data have been used to estimate the seismic potential of the earth crust in the central part of the Ural region, the seismotectonic conditions and the nature of the centres of the strongest earthquakes. Detailed seismic zoning of the central part of the Ural region has been carried out.

It has been established that the Middle Urals is the most seismic area of the latest Ural mountain belt. It has the greatest part of epicentres of notable earthquakes.

Generally, the seismic engineering conditions of the Middle Urals are estimated as favourable and safe for the majority of engineering projects. This is due to the low seismic and tectonic activity of the earth crust in the Middle Urals and favourable seismic conditions for the grounds of the region. Anti-seismic action in the central part of the Ural region is important only for designing and building particularly critical projects in respect of seismic safety – mainly high-rise buildings of 40 and more storeys, and other critical projects.

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Gulyaev A.N., Osipova A.Yu. SEISMICITY IN THE MIDDLE URALS AND BUILDING IN THE REGION [Online] //Architecton: Proceedings of Higher Education. – 2013. – №2(42). – URL: http://archvuz.ru/en/2013_2/20 

Gulyaev Alexander N., Osipova Anastasia Yu.
ADVERSE FACTORS IN THE ACTIVE LAYER OF THE EARTH CRUST AFFECTING THE CIVIL ENGINEERING STRUCTURES OF EKATERINBURG

Architecton: Proceedings of Higher Education №2 (38) June, 2012

In the city of Ekaterinburg, buried utility lines, most of the foundations and road and railway and tramway beds are located in the so-called «active layer» of the earth’s crust, i.e. in the top 2.5-3.0 m. The active layer of the earth’s crust is associated with the boundary zone between the atmosphere and the lithosphere, consists of non-uniform ground in terms of composition and physical and mechanical properties and is sensitive to external effects from the atmosphere, lunar and solar tides, technogenic events and to internal tectonic and hydro-geological processes in the earth’s crust. The results of such sensitivity are movements of ground and rock and seasonal and other slower changes in their physical and mechanical properties. These precipitate failures of buried lines and cause damage to the foundations and walls of land structures, and accelerated wear of road surfaces. A number of measures are proposed to mitigate the impact of the crustal active layer on civil engineering structures.

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http://archvuz.ru/en/2012_2/9/

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Gulyaev A.N., Osipova A.Yu. ADVERSE FACTORS IN THE ACTIVE LAYER OF THE EARTH CRUST AFFECTING THE CIVIL ENGINEERING STRUCTURES OF EKATERINBURG [Online] //Architecton: Proceedings of Higher Education. – 2012. – №2(38). – URL: http://archvuz.ru/en/2012_2/9 

Gulyaev Alexander N., Osipova Anastasia Yu.
ZONING OF NIZHNY-TAGIL CITY TERRITORY IN SVERDLOVSK OBLAST BY ESTIMATED SEISMIC IMPACT

Architecton: Proceedings of Higher Education №1 (37) March, 2012

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.

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http://archvuz.ru/en/2012_1/20/

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Gulyaev A.N., Osipova A.Yu. ZONING OF NIZHNY-TAGIL CITY TERRITORY IN SVERDLOVSK OBLAST BY ESTIMATED SEISMIC IMPACT [Online] //Architecton: Proceedings of Higher Education. – 2012. – №1(37). – URL: http://archvuz.ru/en/2012_1/20 

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