DETERMINING THE NATURE OF DEFORMATIONS OF BUILDINGS AND STRUCTURES BY DIRECTIONS AND WIDTH OF CRACKS
DOI:
https://doi.org/10.31713/budres.v0i46.20Abstract
When designing new buildings within the boundaries of dense buildings, it is necessary to exclude the possibility of deformation of the surrounding buildings and structures. The existing regulatory approaches assess the condition of the brickwork walls by examining the size of cracks in them only from compressive forces. Sedimentary cracks in the walls are limited to a significant opening width of up to 50 mm.
The task of the work is to propose an approach to the assessment of vertical sedimentary deformations of the building after its long-term operation based on the picture and the width of the opening of cracks on its facades. For this, the authors conducted a detailed survey of the existing building within the dense built-up area of Lviv, the facade wall of which is touched by an element of the new building with the arrangement of a separating pile wall. During the inspection, cracks and their width were recorded on the facade and interior walls. In the process of analyzing the results of the survey, an assessment of the bearing capacity of the foundations and the base sediments under them was made, and in the process of performing work on the installation of the separating pile wall of the new building. The obtained theoretical growth of vertical deformations was compared with the levels of the maximum, average and statistical values of projections on the vertical of the actual crack opening width, depending on the angles of their inclination to the horizon. The maximum value of foundation sediments is practically close to the theoretically determined values of sediments.
The proposed approach to determining the deformations of the building through the center of the radial directions of the cracks and the projections of their opening width on the vertical at the angles of their radial directions makes it possible to substantiate the nature and magnitude of the sedimentary deformations of the building and can be used in other studies.
