Systematization of key parameters for prognostication of residual service lifeof building structures СИСТЕМАТИЗАЦИЯ ОПРЕДЕЛЯЮЩИХ ПАРАМЕТРОВ ДЛЯ ПРОГНОЗА ОСТАТОЧНОГО СРОКА СЛУЖБЫ СТРОИТЕЛЬНЫХ КОНСТРУКЦИЙ

Vestnik MGSU

关键词: systematization;    forecast;    key parameters;    parametric method;    building structures;    limit parameter values;    прогноз;    определяющие параметры;    параметрические методы;    строительные конструкции;    предельные значения;   

DOI  :  

来源: DOAJ

【 摘 要 】

The author considers the key parameters used to monitor the condition of structures in the course of their long-term use. In the process of analyzing the expediency of employment of the parametric method of prognostication, the author identified the main parameters of structures made of different materials to be monitored for the above purpose. The research team led by the author systematized the key parameters of masonry, reinforced masonry, concrete, reinforced concrete and structural steel. Thus, the key parameters of reinforced concrete structures include displacement of supports, size reduction of the cross-section of a structural element, loading value, concrete strength in compression, tensile strength, cross sectional area of reinforcement, bearing capacity (for all sections), crack opening width (normal and oblique), deflections, and adhesion between concrete and reinforcement.Prognostication requires identification of the limit values of the above-mentioned parameters. Most of them are specified in the effective regulatory documents; some may be found in the reference and research literature. For example, any increase of corrosion in excess of 15% of the cross sectional area will not cause the failure of the structure. It is recommended to use the method of intervals as a most efficient one in the context of limited information. It contemplates development of interval boundaries of the most probable values of changing parameters. A general pattern for the prognostication of the remaining service life of building structures using the key parameters (the parametric method) may be used to identify initial values of these parameters and limits of changes in their values.
Разработана и предложена систематизация определяющих параметров для конструкций из различных материалов. На основе изменения этих параметров выполняется прогноз остаточного срока службы строительных конструкций с использованием параметрических методов. Для каждого параметра определены предельные значения, превышение которых способно привести к невозможности нормальной эксплуатации конструкции или даже к ее обрушению.

【 授权许可】

Unknown