Abstract
Problem statement.The problem of ensuring the durability of buildings and structures made of concrete and reinforced concrete is now becoming increasingly important. The large scale of the use of these building materials under the conditions of aggressive impact causes significant expenditures of funds for current and capital repairs during the service life of structures. The problem of ensuring the durability of buildings of the first mass series, identifying the features of changes in the stress and strain state (SSS) of large-panel buildings during corrosion of bonds, the development of methods for strengthening and evaluating technical and economic indicators of methods for strengthening the large-panel houses is an urgent scientific and practical task. The purpose of this article is to predict the regulated durability of large-panel residential buildings of 1−480 series during the corrosion of reinforcement bonds of vertical joints. Dependencies of corrosion of kinetics of reinforcement bonds were made together with the data on SSS bonds and features of their exclusion and redistribution of efforts that allow to plan the installation of reinforcement elements for a given residual service life as well as the graphs of the dependence of required reinforcement for the service life. The assessment and prediction of the durability of large-panel residential buildings, taking into account the kinetics of corrosion of concrete and reinforcement bonds of vertical joints are made. On the basis of the conducted research, the methods of calculating the elements of reinforcing the joints of wall panels of large-panel residential buildings to ensure their durability for a given service life has been developed.
Highlights
Згідно з прогнозами, в найближче десятиліття частка старого та аварійного житла в деяких районах країни досягне
The purpose of this article is to predict the regulated durability of large-panel residential buildings of [1−480] series
together with the data on stress and strain state (SSS) bonds and features of their exclusion and redistribution of efforts that allow to plan the installation of reinforcement elements for a given residual service life
Summary
Проблема обеспечения регламентированной долговечности конструкций и сооружений из бетона и железобетона в настоящее время становится все более актуальной. Проблема обеспечения долговечности конструкций зданий первых массовых серий, выявление особенностей изменения напряженно-деформированного состояния (НДС) крупнопанельных зданий при коррозии связей, разработка методов усиления и оценка технико-экономических показателей методов усиления крупнопанельных домов является актуальной научной и практической задачей. Цель статьи - прогноз регламентированной долговечности крупнопанельных жилых зданий серии [1-480] при коррозии арматуры связей вертикальных стыков. Выполнена оценка и прогноз долговечности крупнопанельных жилых домов с учетом кинетики коррозии бетона и арматурных связей вертикальных стыков. На основании проведенных исследований разработаны способ и методика расчета элементов усиления стыков стеновых панелей крупнопанельных жилых зданий для обеспечения их долговечности на заданный срок службы. Ключевые слова: крупнопанельный жилой дом; долговечность; коррозия бетона; напряженно-деформированное состояние; серия [1-480]
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