The Seismic Dynamic Response Analysis Of The Underground Structure

People generally believe that the underground structure has stronger anti-seismic capability. With the request of the underground structure safety and engineering, the anti-seismic become more important for us. First we explain the essentiality of the anti-seismic analysis in the design of the underground structure; secondly summarize correlation theorys; at last, analyze the anti-seismic and damped character for the structure with ANSYS software. Concretely, it can be classified some aspects as follow:1 .Analyzing the modal character of the underground structure, discussing the lining and the rock's affection to whole structure.2. According to the different anti-seismic and damped mode, discussing the anti-seismic material of the lining and the damped material near the lining and discussing the earthquake intensity, the type of the rock, and the rock's constraint and so on, the underground structure dynamic behavior is correlated with all the above closely.3. Discussing the reinforced length of the tunnel entrance's structure which is the emphasis for anti-seismic analysis, the reinforced length is considered to be necessary.4. Calculating the optimization design of the tunnel, the damped effect is considered obvious.