Abstract
This paper deals with a high energy absorbing seismic tie, which is energy absorbing device installed between boiler and its support structure. In our previous paper, I-section seismic tie as new type has been developed by optimizing the design parameters (sectional height, web thickness and flange thickness), changing its material from current carbon steel SS400 to low yield strength steel LY225. Cyclic load tests using 1/3 scale models of the tie have been done to verify energy absorption of the high energy absorbing seismic tie. In this paper, vibration reduction effects for thermal power boiler structure with the high energy absorbing seismic ties are examined by time history analysis using an analytical model which simulates boiler structural vibration characteristics.
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