The features of reliability providing and residual life assessment of bridges in difficult operation conditions

Authors

  • M. V. Savytskyi Dr. Sc. (Tech.), Prof., Ukraine
  • P. O. Pshin’ko Cand. Sc. (Tech.), Ukraine
  • A. M. Zinkevych Cand. Sc. (Tech.), Ukraine

Keywords:

reliability, residual life, degradation function, a probabilistic calculation, life cycle design.

Abstract

Abstract. Purpose. The purpose of work is to examine the development of the algorithm for predicting the life of bridges in difficult conditions for further assessment of residual life of structures and effective implementation of restoration program. Methodology. Residual design resource forecasting is carried out on the degradation model included in codes methodology. Refinement of the result of the residual life assessment is provided by using probabilistic structure analysis (strength, crack resistance). Findings. The analysis of one of the aspects that complicates forecasting structures resource and reducing the effective restoration implementation, namely, the mutual influence of the states of the neighboring elements. On the basis of an example, the need of accounting the effects of some bridge elements state for the degradation function of others, which may be the determining factor in difficult operation conditions is shown. Accounting of the effects of the state of the adjacent bridge elements on their degradation function allows to adjust the weighting effect of a specific item on the technical condition of the bridge and therefore more effective to take into account the need for repair. For more accurate method for forecasting the residual resource and reliability parameters for operation, requires the periodic evaluation of the technical condition of the structure, at what the definition of degradation function must take into account complex influence of aggressive factors, the mutual influence of adjacent structures and features of the location structure in construction. Originality. An addition for algorithm of forecasting the life of bridges in difficult operation conditions is considered. Practical value. Receiving of refined features of structural elements degradation allows to carry out a refined assessment of residual life and more effectively implement of restoration measures program, which is especially important in conditions of limited funding.

Author Biographies

M. V. Savytskyi, Dr. Sc. (Tech.), Prof.

Department of Reinforce-Concrete and Stoune Constructions, State Higher Education Establishment “Pridneprovsk State Academy of Civil Engineering and Architecture”, 24-a, Chernyshevskogo str., 49600, Dnipropetrovs’k, Ukraine

P. O. Pshin’ko, Cand. Sc. (Tech.)

Dnipropetrovs’k National University of Railway Transport named after academician V. Lazaryan, Lazaryana str., 2, 49010, Dnipropetrovs’k, Ukraine

A. M. Zinkevych, Cand. Sc. (Tech.)

Department “Project management, buildings and building material”, Dnipropetrovs’k National University of Railway Transport named after academician V. Lazaryan, Lazaryana str., 2, 49010, Dnipropetrovs’k, Ukraine

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Published

2016-07-31

Issue

Section

Innovative lifecycle technology of housing and civil, industrial and transportation purposes