Ecological Safety of Construction 

DOI: https://dx.doi.org/10.24866/2227-6858/2019-2-14

Smirnova E.

ELENA SMIRNOVA, Candidate of Engineering Sciences, Associate Professor, e-mail: esmirnovae@yandex.ru
Department of Technosphere Safety, Faculty of Engineering Ecology and Municipal Facilities
Saint Petersburg State University of Architecture and Civil Engineering
4 Vtoraja Krasnoarmejskaja St., St. Petersburg, Russia, 190005

Non-destructive method applied to the restoration of historical monuments

Abstract: The use of buildings and structures as elements of the urban environment should first of all be safe, with a theoretically-predicted structural strength in various natural and man-made emergencies. The article discusses ways to solve the problem of ensuring the safety of buildings and structures in use if the operating conditions of these facilities change. The assessment of possible consequences of bells installation on the steeples of St. Isaac's Cathedral is given as an illustration. The measurements of vibrations with simultaneous assessment of robustness and bearing capability of the brickwork have shown that the vibrational impact of chimes of heavy bells can not adversely affect the bearing structures of the bell towers. Thus, the ecological environment forming factor that forms a safe area of human habitation is taken into account. However, there is always a risk of such adverse affect on the structure of the bell tower and stability of soils at its base. It is offered, therefore, to carry out investigation before the beginning of reconstruction using the structure model, which makes it possible to give consideration to the impact of «new» planed loads to exclude any possible emergency situation at the facilities undergoing renovation.

Keywords: operational safety, oscillations, control and stability of the soil, non-destructive testing method, dynamic parameters, vibrational impact, historical monument.

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