Methods for modeling the stress-strain state to determine residual life of reinforced concrete console spillway under various boundary conditions

Abstract

Methods for modeling the stress-strain state to determine residual life of reinforced concrete console spillway under various boundary conditions

М.A. Bandurin, V.A. Bandurin

Incoming article date: 12.12.2013

This article discusses methods of modeling the stress- strain state needed to evaluate the different boundary conditions of the technical state of reinforced concrete cantilever operated long spillway. Most long- operated hydraulic structures in Russia is unsatisfactory condition requiring modernization and refurbishment. After a long period of operation waterworks continue to work without a planned repairs necessary to make the technical reconstruction of buildings on the basis of innovation , as well as previously proven technology of repair. Console spillway - open conjugating hydraulic structure where the water first moves over the construction , and then - the water flow freely reset to unfortified ground. Such structures the most economical , since the same difference befov their reinforced concrete part of a much smaller, and no part of the stilling strengthened and basically they are arranged on the rocky soil . When soils are weak, then you must make the console damper on long distance or strengthen easily eroded soil in the fall of the water flow. In the most dangerous cases falling from the absorber fed to a stilling well, for energy dissipation , from which he subsequently moved away from the building. Assessed the degree of accident risk of reinforced concrete elements console spillway . In the experiment sought to identify the residual resource , namely the reliability of the technical state of facilities for the period of operation, more than 60 years , in different types of defects and damages , as well as the estimated residual life . A complex system using a database Microsoft Access.

Keywords: waterworks, console spillway, the stress-strain state, numerical modeling, technical condition, residual life.