Partial Least Squares Regression Approach in the Analysis of Damage Intensity Changes to Prefabricated RC Buildings during the Long Term of Mining Activity

Adrian Jędrzejczyk,Karol Firek,Aleksander Byrdy,Janusz Rusek

doi:10.3390/app12010467

Adrian Jędrzejczyk, Karol Firek + Show 2 more

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https://doi.org/10.3390/app12010467

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Abstract

This article presents the results of the analysis of the extent of damage to 138 multi-storey buildings with reinforced concrete prefabricated structure, which are located in the mining terrain of the Legnica-Głogów Copper District. These objects are residential and public utility buildings of up to 43 years old, erected in industrialized prefabricated technologies: large-block and large-panel systems. The research was based on the results of technical condition inventory carried out in 2002, 2007 and 2012. As part of the analysis, the damage intensity index wu was established for individual structural and finishing elements of the studied buildings. This index is defined on a six-point scale, which includes a detailed description of the extent of damage that corresponds to the successive degrees of intensity. As part of the research, the databases were significantly expanded and the generalized formulas of the damage intensity index wu for individual groups of buildings were verified. For this purpose, the partial least squares regression (PLSR) method was applied. Thereafter, the analysis of changes of this intensity in time was carried out and the relations between the extent of damage and the impacts of mining exploitation were examined. The approach presented in this paper and obtained research results are characterized by a high degree of utilitarianism and can be applied to increase the efficiency in the optimal maintenance management of buildings, including planning of repairs and retrofits throughout the technical life cycle of the buildings.

Highlights

The idea of sustainable development is a multidimensional concept that emphasizes the integration and achievement of a dynamic balance between economic, social and environmental aspects [1]
All buildings are located in the mining area of the Legnica-Głogów Copper District (LGCD) and over their entire lifetime they have been subjected to mining impacts in the form of continuous ground deformation and mining tremors
Using the partial least squares regression (PLSR) method and the extended database, linear formulas of generalized damage index wu were verified for groups of large-block and large-panel buildings

Summary

Introduction

The idea of sustainable development is a multidimensional concept that emphasizes the integration and achievement of a dynamic balance between economic, social and environmental aspects [1]. One of the fundamental assumptions of this doctrine is to achieve social balance by, among others, increasing the economic and environmental efficiency of planned building development projects. There has been an intensive growth of issues in the field of sustainable development. This includes the field of civil engineering and its branch in the form of building engineering [2,3,4]. An important factor leading to the development of existing buildings is the consideration of the often-negative impacts of the external environment impacts. Environmental impacts include earthquakes induced by geogenic (e.g., tectonic plate movements) [5] as well as those with anthropogenic origins (e.g., underground mining)

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