Evaluation of aseismic reliability of actual boiler structures and a study on seismic tie deisgn based on proof tests using a large scaled shaking table

摘要

This paper deals with the evaluation of aseismic reliability of actual boiler plant structures in conjunction with seismic ties, installed betweent he boiler and support structures. Proof tests were conducted with a coupled model using a large-scale shaking table which verified that the ties would not fail and acted as an energy absorbing devise against severe ear6thquakes. Since recent boiler structures are designed based on dynamic response analysis considering the boiler-structure interaction and the effect of energy dissipation of the ties, it is necessary to verify tje accuracy of simulation methods. In view of this, numerical models of the ties are discussed in post analysis. Then extensive numerical studies are carried out for the evaluation of real plant with a number of seismic ties.