In this study, preliminary analytical study on the middle scale impact test of SC(steel plate concrete) walls were carried out to evaluate the impact resistance performance of SC walls subjected to missile impact load. A total of 15 middle-scale impact tests will be carried out to investigate the impact behavior of SC walls. Pre-test impact analysis for all test cases were performed to decide the initial impact velocity. Calibrations of the analytical parameter were performed using preliminary test results.

In this study, blast resistant performance of steel plate concrete (SC) and RC wall against blast load is compared. In order to quickly and easily perform the sensitivity analysis of blast response to explosion design variables, an equivalent single degree of freedom (SDOF) dynamic analysis program was developed. By analyzing more than 800 design variables, we could understand the effect of variables on blast resistant performance.

In the nuclear power plant, safety-related structures have been used above No. 11 rebar. It needs to mechanical connection device to join RC to SC walls because ACI 349 presents that lap splices shall not be used for bars larger than No.11 bar. The tensile performance tests were performed to confirm structural integrity on the mechanical connection device. But performing the tests in accordance with various connection cases has limitations, such as time or cost. Therefore, computational analysis methodology is developed in order to verify structural integrity for various connection cases.

In this study, sensitivity analyses on the blast response of the steel-plate concrete(SC) walls subjected to explosive blast loads were carried out. In order to evaluate various cases effectively we set up the blast response evaluation procedure of SC walls, and developed the blast response evaluation program of SC walls using equivalent SDOF method. Finally, the effects of the various design parameters on the blast response of SC walls were investigated using the developed program.