2018, Vol. 5, No. 4. - go to content...

Permanent address of this page - https://t-s.today/en/01sats418.html

Метаданные этой статьи так же доступны на русском языке

DOI: 10.15862/01SATS418 (https://doi.org/10.15862/01SATS418)

Full article in PDF format (file size: 1.3 MB)

For citation:

Tiraturyan A.N. Mechanical-statistical method of estimation of the residual life of flexible pavements. Russian Journal of Transport Engineering. 2018; 5(4). Available at: https://t-s.today/PDF/01SATS418.pdf (in Russian). DOI: 10.15862/01SATS418

Mechanical-statistical method of estimation of the residual life of flexible pavements

Tiraturyan Artem Nicolaevich
Don state technical university, Rostov-on-Don, Russia
E-mail: Tiraturjan@list.ru

Abstract. One of the most important tasks of the road industry at the moment is the development of effective mechanisms for managing the state of flexible pavement, taking into account its actual residual resource. The paper presents new algorithms of the mechanic-statistical approach to the estimation of the residual resource of flexible pavements, formulated on the basis of a complex of theoretical and experimental studies. One of the main indicators of the response of a road structure to a dynamic effect is to use the density of the energy dissipated, calculated from the area of the dynamic hysteresis loop, under the influence of the calculating car wheel. In the course of full-scale measurements, general statistical regularities in the distribution of the basic structural parameters of structural elements of flexible pavements (elastic moduli, coefficients of layer damping) are established. It was revealed that the statistical distribution of elastic moduli and coefficients of damping of layers of flexible pavements obeys a logarithmically normal law. The regularities of the change in the mathematical expectation and dispersion of the elastic moduli and coefficients of damping of constructive layers of flexible pavements are established. An experimental technique for determining the coefficients of damping of constructive layers of flexible pavements has been developed based on the results of recording the amplitude-time characteristic on the surface of a pavement covering using the FWD. On the basis of a set of studies, algorithms for the mechanic-statistical method for estimating the residual life of flexible pavements and the designation of reinforcement layers based on technical monitoring have been developed, combining numerical simulation algorithms to determine the design values of the road construction resource, as well as experimental measurements permitting any stage of operation of pavement, set the values of the actual residual life, the remaining service life, gamma-percentage of residual life, gamma percentage residual life.

Keywords: pavements; mechanical-statistical method; technical monitoring; residual resource; energy dissipated; hysteresis loop; damping ratio

Download article in PDF format