Abstract:

A method of vibration calculations of a two-level underground station and its transmission to the ground surface is derived and the algorithm is realized as a part of an integrated package UNSONIC 2.1. A two-level station is constructed with typical sizes significantly exceeding the length of bending waves in the separate constructive elements. The lower level in the considered model is on the ground and the base of the upper floor is suspended on the walls of the station. Forces from the moving trains are localized on four railways of both levels. The package of programs developed in the Acoustics Laboratory of the Tunneling Association (Moscow) permits the calculation of all the vibration levels inside the station and tunnels, and on the ground surface in the adjacent area.