REMOVING THE BUILDING FROM AN EMERGENCY STATE AFTER DESTRUCTION OF THE COVERING DISC AND PART OF THE LOAD-BEARING WALL DUE TO WETTING

Abstract

The article examines the case of an emergency situation, namely the subsidence of prefabricated covering slabs, which occurred as a result of wetting and destruction of the load-bearing wall pilaster. An analysis of existing scientific research regarding the technical condition of existing buildings and structures was carried out. Purpose of the study. Determination of the cause of the emergency, namely the destruction of a load-bearing pilaster in a brick wall and the destruction of a covering disk made of prefabricated slabs in a residential building in Lviv, as well as removing the building from an emergency condition. The objective of the study was to conduct a technical inspection of the existing building, recording a list of existing defects in building structures, drawing conclusions and developing recommendations for restoring the building. To achieve the goal, an inspection of the building elements was carried out, and the main defects and damage to building structures were recorded, and the condition of the load-bearing structures was noted. The building in which the survey was carried out is a residential five-story brick building with a technical floor. At the time of the survey, the lower floors of the building were in use.

The structural design of the building is with load-bearing transverse and longitudinal brick walls and floor discs and coverings made of prefabricated reinforced concrete slabs. The covering structures of the technical floor of the building are prefabricated ribbed covering slabs, which rest on brick walls and a prefabricated reinforced concrete crossbar, which rests on load-bearing brick walls. By the time of the inspection, the structures of the technical floor were in disrepair. Recommendations are given for urgent temporary stabilization of the situation. The publication presents diagrams and photos of the destroyed area The causes of destruction of load-bearing structures and a list of defects are described, and conclusions are given. It was determined that as a result of damage to the roof and soaking, the load-bearing masonry brick pilaster lost its design strength and collapsed, which led to the destruction and subsidence of the load-bearing crossbar and the covering disc made of prefabricated reinforced concrete slabs. A solution for eliminating an emergency situation with subsequent restoration of coverage is presented. Damaged sections of load-bearing walls and the roof structure were restored..