The dynamic characterization of a three-story auxiliary building in a nuclear power plant (NPP) constructed with a monolithic reinforced concrete shear wall is investigated in this study. The shear wall is subjected to a joint-research, round-robin analysis organized by the Korea Atomic Energy Research Institute, South Korea, to predict seismic responses of that auxiliary building in NPP through a shake table test. Five different intensity measures of the base excitation are applied to the shaking table test to get the acceleration responses from the different building locations for one horizontal direction (front-back). Simultaneously to understand the global damage scenario of the structure, a frequency search test is conducted after each excitation. The primary motivation of this study is to develop a nonlinear numerical model considering the multi-layered shell element and compare it with the test result to validate through the modal parameter identification and floor responses. In addition, the acceleration amplification factor is evaluated to judge the dynamic behavior of the shear wall with the existing standard, thus providing theoretical support for engineering practice.

The main control room(MCR) module in the auxiliary building has been reviewed to reduce the construction period. The main control room module are divided into ceiling & floor module and integrated combined module(ICM) including duct, tray, piping. In this paper, a numerical lifting analysis for ICM was performed to confirm the structural integrity. In regards of installation process, the constructability of the MCR module was reviewed as well. Consequently, it is concluded that the reduction of construction period is possible.