MODELING OF RANDOM LOADS ON THE CONSTRUCTION OF FRAMEWORK BUILDINGS
Journal Title: Збірник наукових праць Українського державного університету залізничного транспорту - Year 2018, Vol 179, Issue 13
Abstract
Determination of real indicators of the reliability of structures in framework buildings is a rather complicated task. The solution of this problem is possible only on the basis of an accurate mathematical description of random factors that affect the state of structures during their construction and operation. Also, an important problem is reliability prediction of structures calculated on strength and rigidity according to the requirements of acting Codes of designing. In this case, the important issues are the development of load models taking into account all the peculiarities of their stochastic nature. For loads that are decisive for industrial framework buildings: load from bridge cranes, wind and snow loads, ground-based and developed numerical probabilistic models of random processes on a PC taking into account the features of each load. For simulation of loads during the service life of structures it is necessary to form realizations of large length. For this the methods of simulation of processes for given correlation functions and unidimensional distribution laws are the most suitable. The given problem is decided by specially selected non-linear transformations of the corresponding normal stochastic processes. The model of the crane load is based on the model of a normalized normal stationary random processes with a given normalized correlation function. The numerical model of the wind load is based on the model of a normalized stationary random process on the Weibull distribution with a given normalized correlation function. The basis of the snow load model is the normalized polynomial-exponential stationary random process with a given normalized correlation function. The statistical, frequency characteristics and emission distributions of random processes obtained from probabilistic numerical models are in good agreement with experimental data. The developed models can be used to find additional numerical and frequency parameters of simulated processes. Also, the developed models can be used to simulate the joint action of random loads, or directly in calculations of reliability of elements in the action of the above-mentioned random loads.
Authors and Affiliations
Vitaliy Severyn
Keywords
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- EP ID EP415296
- DOI 10.18664/1994-7852.179.2018.147754
- Views 34
- Downloads 0
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