STUDYING THE RIGIDITY OF THE COUPLING NODES OF COVERING PLATES AND PARAPET PANELS OF A LARGE-PANEL 55-APARTMENT RESIDENTIAL BUILDING IN UZHHOROD
DOI:
https://doi.org/10.31734/architecture2023.24.020Keywords:
reinforced concrete structures, slabs, panels, nodes, conjugation, defects, damageAbstract
This work presents results of the survey and research, as well provides recommendations for ensuring the rigidity of the coupling nodes of the covering plates of a large-panel 55-apartment residential building in the city of Uzhhorod, blocks 4, 5, 6, commissioned by “Zakarpatzalizoboton” Production Association. The research topic is formulated and its relevance is noted. An analysis of the latest studies and publications on the issues of strengthening the reinforced concrete structures during construction and long-term operation is presented. The article provides general information about the construction of the residential building, including its constructive solution. The authors noted the reasons that have forced the need for examination and strengthening of nodes, covering and parapet panels. In particular, the article presents the survey data showing a number of errors and shortcomings of the construction of the building, such as the displacement of embedded parts on the parapet panels that do not correspond to the location on the covering slabs. Additionally, the article points out that the embedded parts on the upper surface of the shortened end are not provided on the covering plates of the project of series 135, section 10-11-1-23 "roof elements". During installation, these plates should be installed with the shortened end on the trays and welded to the lower embedded parts. The article describes some other shortcomings resulting from the violation of construction technology and exceeding tolerances and deviations from the requirements enshrined in regulatory documents that weakened the load-bearing capacity (stiffness) of the coating and the stability of the building. These errors and shortcomings can significantly affect the general strength of the structure, which is designed for seismic loads in the area of 7 points. Based on the survey data, proposals and recommendations were developed to strengthen the junctions of the covering slabs and parapet panels and to eliminate the identified deficiencies. The research proves the expediency of surveys to restore the load-bearing capacity of the building as a whole and notes the scientific novelty and practical significance of the study. Based on the analysis of research data, general conclusions are formulated.
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