ORIGINAL RESEARCH
Vibration Characteristics in Subway Operation
and Environmental Responses of Ancient
Buildings
Yiguo Xue, Shucai Li, Dunfu Zhang, Zhang Bo, Qiu Daohong
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Research Center of Geotechnical and Structural Engineering, Shandong University,
Jinan 250061, Shandong, China
Pol. J. Environ. Stud. 2014;23(1):231-241
KEYWORDS
ABSTRACT
Seismic waves travel faster in rock stratum and have greater environmental responses. This paper analyzed
the transmission regulation, vibration frequency, and amplitude attenuation characteristics of waves in
layered elastic medium. Also, impacts of the elastic modulus of homogeneous medium, subway tunnel depth,
and other factors on the environmental response in the runtime were investigated. Based on typical lots of
Qingdao Subway, environmental response of train vibration was analyzed. The horizontal vibration response
of Sensitive Point 1 indicates that the horizontal velocity reaches its peak (0.4 mm/s) at 25 m away from the
vibration source, and it minimizes with the increase of horizontal distance. Vertical vibration of Sensitive Point
2 shows that the maximum of Z vibration level occurred right above the tunnel, and numerical value of Z
vibration level decreased with the increase of horizontal distance. The results provide data for the vibration
damping and isolation during subway tunnel construction in rock stratum, and meaningful references to the
control of environmental response and vibration problems during the operation of a subway train.