Performance Experiment of a Multi-story Subway Station

Abstract:

In order to study the non-linear failure state of materials, local components and integral structure of multi-story subway station under earthquake action, a 1:10 large-scale pushover test was carried out in the background of a multi-story subway station project in Shanghai. According to the seismic response characteristics of underground structures, loading mode was in the form of inverted triangular displacement carried out by means of multi-point coordinated loading by three actuators. Development process of cracks, plastic hinges formation sequence and pushover curve were studied. Failure patterns and modes of the whole structure and central columns were contrasted. Critical performance data points of the structure was given. On account of the pushover test results, the seismic performance of deep metro station structure was also comprehensively analyzed, which can provide reference for designs of similar structure based on seismic performance.