Shaking Table Model Test Design for Utility Tunnel

Abstract

Three methods are mainly used in the seismic research of underground engineering, including theoretical research, numerical calculation and experimental research. In this paper, a detailed design of a utility tunnel shaking table test is carried out. First, the selection of the shaking table, model box and sensor were analyzed and studied. Then the test scheme was designed in detail. The design of the test scheme mainly includes 4 aspects. These 4 aspects are the similarity ratio design, the reinforcement of model structure, the input seismic wave and the sensor arrangement. In the design of similarity ratio, E, ρ, L and a are the basic quantities. The other variables are converted by the idea of combination dimensional analysis and kinetic equation. The height of the model box is not more than 2.5m according to the previous research results. The height of the model box should be smaller, and the height of the model box is 1.8m by calculation. The reinforcement ratio of the equal area is adopted. El-Centro wave, Kobe wave and Taft wave were selected in the experiment. One way step by step loading system was adopted in the test. At last, the position and quantity of the 4 kinds of sensors used in the experiment were studied, and the detailed layout of sensors were given.