대용량 웨이브형 물탱크의 설계모델 개발

The purpose of this study is to develop a simplified design model that can be applied to the large capacity water tank with stainless corrugated panel wall and additional horizontal reinforcement frames installed in the tank. Design seismic load determination and application process considering impulse and convection was reviewed for the seismic design of rectangular shaped tank. The effect of aspect ratio and capacity of the tank on the seismic water pressure was negligibly small but the maximum stress appeared on a structural element was influenced by those factors along with the water height. Based on the full scale FEM analysis using shell elements, safe designs of the water tank considering additional horizontal reinforcement frames were proposed according to the capacity and height of the tank. From the numerical analysis, it was found that the design was governed by the maximum stress on the H-beam. Therefore, this study proposed a simplified beam design model with internal spring supports that can reproduce the moment distribution along the H-beam in the 3D FEM model.