Experimental and Numerical Study on Structural Vibration Response of Buildings Along the Subway Tunnel

Abstract

With the development of urban rail transit, people pay much more attention to the vibration of building along subway lines. The vibration of subway lines not only affects people’s normal life, but also has a lot of damage on the building structure. Doing lots of research on the vibration response of buildings is significant to vibration control. In this paper, a set of field tests measuring the vertical vibration of tunnel wall and each floor of a three-story building along the subway line were carried out to analyze different vibration responses of tunnel wall and surrounding building with two kinds of stiffness fastener in the tunnel. In order to explore influences of varies of factors on vibration of vicinity buildings around the subway lines, this article has established a multi body dynamics model of vehicle-track and a 3-D FEM model of tunnel-soil-structure by ANSYS. On the basis of verifying the validity of the model, the vertical vibration of each floor under different train speed and fastener stiffness can be calculated. It can be concluded that the vertical vibration would be reduced with the decrease of fastener stiffness and the increase of train speed.