FORCED VIBRATION TEST OF AN ABWR NUCLER REACTORBUILDING – SIMULATION ANALYSIS BY MDOF PARALLEL MODEL

摘要

The forced vibration test was performed to evaluate the dynamic characteristics of Hamaokanuclear power plant unit-5 reactor building from May through June in 2003. This report is focusing onthe results of the simulation analysis regarding the test and of the seismic response analysis to verifythe aseismic design safety under the basic design earthquake motion. First, the simulation analysis isperformed to establish an analytical model that can explain the dynamic characteristic similar to the testresults. A MDOF(Multi-Degree-Of-Freedom) parallel model is used in the analysis to verify thesoil-structure interaction model for design. The simulation results are corresponding well the vibrationtests, and it is concluded that the model used in the simulation analysis can well explain the dynamiccharacteristics of the real nuclear reactor building. Next, the seismic response analysis of this buildingis carried out in NS and EW direction in order to verify the aseismic design safety under the basicdesign earthquake motion S1. Comparing the maximum seismic response values under S1 earthquakeand the design seismic loads, the former is less than the latter for all members in both directions.Therefore, it is also concluded that the design seismic load and aseismic design safety are verified.