Mieiersdortf K. The organizational and technological providing of the geometric parameters accuracy of rigidity elements for high-rise cast-in-place frame buildings

The dissertation is devoted to problems of technology and regulation of geometrical parameters accuracy in vertical bearing structures for high-rise cast-in-place frame buildings. The text reviewed the complex construction processes of multistory cast-in-place buildings. The construction quality depends heavily on the formwork systems in use. The Since the standards lacks tolerance deviations for high-rise buildings so it requires reducing large quantity of statistical data from construction sites reflected in executive surveys. The method of statistical data processing of geodetic executive surveys erecting high-rise frame buildings constructions was designed for easy and fast processing this data. The method was done using mathematical models, methods of mathematical statistics and application software recourses in a software system "MONOLITH". Analysis of the erecting rigidity elements accuracy in the high-rise cast-in-place frame buildings showed that constructions deviations are subject to the law of normal distribution. It is indicate the statistical consistency and stability of their construction process, and also the independence from construction and geodetic works level on site for construction accuracy of the vertical bearing elements. The application of probability theory and applicable state standards allowed getting the accuracy characteristics of the vertical bearing elements geometrical parameters. The analysis of them leads to conclusion that setting of permissible deviations from the vertical axis should be within ± 30 mm. By virtue of the basis of multifactor mathematical model the prediction method of the unit labor content in the construction designs of high-rise cast-in-place frame buildings was developed. Model parameters were selected by experts examination. Selected experts have huge appropriate experience. Thanks to the ranking factors proposed by experts the model includes the most influential on the unit labor content, among them: the unit labor content of installing vertical structures formwork, the unit labor content of the vertical formwork structures adjustment, qualifications of laborers.