Возможность повышения скоростей движения скоростных и высокоскоростных электропоездов по стрелочным переводам и съездам

Abstract

The possibility of increasing motion speeds of express (“Lastochka”) and high-speed (“Sapsan”) electric trains by the side direction of express (project 2726) and high-speed railway (project 2956) switches is experimentally investigated. It is caused by need of reduction of delays in train schedule caused by performance of repair and scheduled works on infrastructure facilities of lines. The basic methodical principle of pilot studies was the integrated approach based on definition of indicators of dynamic qualities and stability of the movement of a rolling stock in a common timepoint (coefficients of dynamic additives on vertical vibrations in steps of spring suspension, frame forces, vertical and horizontal accelerations of bodies of cars), impacts of a rolling stock on rail elements of railway switches (dynamic stresses, side forces), indicators of operability of locomotive crews and comfort of journey of passengers in operational environment. For the purpose of the broadest coverage of possible versions of handling express and high-speed electric trains on railway switches and connected tracks the objects of research were located in even and odd mouths of the station Chudovo of Oktyabrskaya railway; tested EMU was loaded by load simulators according to the scheme of rated passenger density of population. Numerical values of specified indicators are given and the basic possibility of the movement of electric trains on railway switches and connecting tracks with the speeds exceeding the existing standards is proved. By results of tests specific proposals on the updates of the existing normative documents of the Ministry of Transport of the Russia and JSC RZhD regulating operational activity on the lines intended for express and high-speed movement are formulated.