About the author:

1. Shaanxi Architecture Science Research Institute Co., Ltd., Xi’an, Shaanxi 710082, China;2. China United Northwest Institute for Engineering Design & Research Co., Ltd., Xi’an, Shaanxi 710077, China;3. Xi’an Technological University, Xi’an, Shaanxi 710021, China

Abstract:

During the service life of an existing building that was crossed by a newly constructed subwayfrom below, multiple cracks occurred. In order to analyze the impact of the vibrations generated by thesubway during operation on this building, on-site surveys and inspections were carried out. The width ofthe cracks on the walls, the inclined deformation, and the settlement deformation were continuouslymonitored. The dynamic characteristics and vibration responses were respectively tested when the subwaywas not in operation and when it was in operation. In accordance with national codes and standards, thesafety and seismic performance of the building were appraised, and the safety and serviceability gradeevaluation of the impact of the vibrations on the upper load-bearing structure was conducted. Acomprehensive analysis was made of the structural deformation performance and vibration influence of thebuilding under the influence of the subwayvibrations, and suggestions were put forward for thesubsequent reinforcement treatment.