Анализ дефектов несущих конструкций производственного здания

Abstract

All buildings with a significant service life must be regularly surveyed. This work analyzes the results of the inspection of the building of the compressor shop KC-1. Analysis of the design documentation and the results of measurement work showed that structurally the building has overall dimensions in plan along the outer axes of 21.0 × 72.0 meters. The height of the building is 17.0 meters. The conducted visual examination showed the presence of damages and defects of the third and fourth categories, which requires an instrumental examination. In particular, the need to determine the strength of brickwork and the strength of concrete in structures. The analysis of the results of the instrumental examination showed: the results of testing the wall masonry by the shock pulse method using the ONIKS 2.5 device showed that the compressive strength grade of the silicate brick of the compressor shop walls corresponds to M75 and M125, and ceramic M100. The grade of the masonry mortar for the walls of the compressor shop corresponds to M50 and M75; The results of concrete testing by the non-destructive method of strength control using the DigiShmidt2000 device showed that the compressive strength class of concrete in the reinforced concrete columns of the workshop corresponds to B20, in the girders B25, floor slabs and coating slabs B20. Verification numerical calculations on the computer of the bearing capacity of the building structures of the compressor shop building were performed taking into account the actual static diagrams, sections of elements, strength characteristics of materials established during the survey, and constant loads existing at the date of the survey. Based on the results of the verification calculation of the building structures of the transverse frame of the building, it was found that the bearing capacity of the upper chord of the truss was not provided. The bearing capacity of the building columns when calculating according to the first and second groups of limiting states is provided. In general, the analysis showed that the technical condition of the technical condition of the compressor shop KC-1 is unacceptable.