Shaking table tests of double-layer micro-module data center: Structural responses and numerical simulation

Data centers are critical infrastructures that run large-scale Internet-based services such as the Internet of Things, cloud computing, and artificial intelligence. To accommodate the requirements on computing power, more and more data centers are being built all over the world including at high seismic intensity areas. However, the seismic performance of data centers, especially the newly developed micro-module data centers are still unknown. In this paper, triaxial shaking table tests on a double-layer micro-module data center model were conducted. The major components of the tested model, including the supporting steel frame structure and inside cabinet equipment, instrumentation, and loading protocols are described in detail. The effects of inside cabinet equipment on seismic performance of the data center were directed considered by installing these equipment in the data center model. The seismic damage and dynamic characteristics of the supporting steel frame were evaluated and explained in terms of the natural frequency, acceleration, dynamic amplification factor, and deformation responses. A finite element model was developed and validated for prediction the seismic responses of the tested data center model.