Constructive solutions to ensure the safety of the object of historical heritage in conditions of weak foundation soils

Abstract

The article analyzes the results of a technical survey of a cultural heritage object. The building is located on the slope of the Oka River. During its existence, the building was rebuilt several times, which led to various design solutions of its individual parts. Additional complexity is associated with the location of the object on the slope, the presence of a significant thickness of bulk soils located under the foundations, high groundwater level, prolonged flooding of the basement of the building. Part of the foundation is made on wooden piles, partially lost during operation. To analyze the current state and determine the ways of reconstruction of the object, calculation schemes were drawn up to perform calculations of general static stability, the boundaries of the slope landslide zone for various cases and deformation of the base at different load levels were determined. The article identifies possible risks, analyzes the main models of the behavior of the soil foundation taking into account negative factors, carries out variant design of structural solutions to strengthen the foundation and foundation structures - by strengthening the foundations with micropiles of the “Titan” or “Atlant” type, or by fixing bulk soils to improve the geotechnical properties of soils with low resistance. The results of the conducted experimental studies and verification calculations emphasize the possibility of ensuring the regulatory operation of the foundation-foundation system, taking into account the improvement of the engineering and geological parameters of the foundation. This article contains an algorithm for the application of constructive solutions for each proposed variant of strengthening the foundation and foundations for the reconstructed object. The application of the research results allows to preserve the object of historical heritage, ensures the safety not only of the reconstructed building, but also of neighboring objects falling into the zone of influence of the object, the stability of the slope on which the object is located.