Articles published in the issue 4, 2017

Reinforced Bridges Durability Management Under Difficult Conditions

Keywords: durability, reinforced concrete, bridge, defects and damages, structural health monitoring.

Karapetov Eduard — PhD., Professor of the Department of «Bridges» Petersburg state transport University of Emperor Alexander I.

Е-mail: eskar@yandex.ru.

Belyi Andrei — PhD., associate Professor of the Department of «Bridges» Petersburg state transport University of Emperor Alexander I.

Е-mail: andbeliy@mail.ru.

Abstract. In this article authors highlight questions of durability management of reinforced concrete bridge constructions located on industrial transport railways and highways in difficult exploitation conditions. The main problems of maintenance are formulated, the prevailing defects and damages are designated, and similarity with maintenance problems in megalopolises is noted. The conclusion on necessity of special approaches to management of technical condition of such objects is made; recommendations on implementation of automated structural health monitoring systems are given.

Assessment Of Resource Of Rails In Various Operational Conditions

Keywords: reliability of rails, failures, a gamma percent resource of rails, the passed tonnage, axial load, radius of curves.

Karpuschenko Nikolai — D.Sci., Professor of the Department «Track and Track Facilities», Siberian Transport University (STU). E-mail: kni@stu.ru

Trukhanov Pavel — engineer of the Research Laboratory «Track Testing», Siberian Transport University (STU). E-mail: gaiwer123@mail.ru

Abstract. Method of calculation of reliability of rails are presented in article. Research of refusals and durability of rails on two directions of the West Siberian management of infrastructure for sites of a way with different operational characteristics is conducted. Dependence of a gamma percent resource of rails on axial loading of cars and the plan of a way is received. Conclusions about a possibility of reaching of the passed tonnage of rails in 1500 million tons gross are given.

Features Of The Construction And Operation Of The Tram Routes

Keywords: welded joints of tram rails, kinks and defects in the tram tracks, tram rails.

Konshina Vera — Ph.D., associate Professor of the Department of «Methods and instruments of nondestructive testing» of St. Petersburg University of means of communication. E-mail: vera.konshina@gmail.com

Nikolaev Sergei — Ph.D., associate Professor of the Department of «Methods and instruments of nondestructive testing» of St. Petersburg University of means of communication.E-mail: nicol_ndt@mail.ru

Abstract. This article describes one of the important problems associated with the lack of requirements for quality control of welded joints of tram rails, as well as the consequences that may lead to the lack of regulatory documentation and technical control.