Characteristics for Progressive Collapse Behavior and Ultimate Strength of Very Large Marine Structure

Park, Joo-Shin; Ko, Jae-Yong; Lee, Kyoung-Woo

Journal of Navigation and Port Research 2009;33(5):315-321.
Published online June 30, 2009.

초대형 해상구조물의 붕괴거동 및 최종강도 특성

박주신, 고재용, 이경우

Characteristics for Progressive Collapse Behavior and Ultimate Strength of Very Large Marine Structure

Joo-Shin Park, Jae-Yong Ko, Kyoung-Woo Lee

Abstract

The Very Large Marine Structure has been widely used new method of ocean space instead of method for reclamation. Therefore， VLFS is proposed to coincide on such request. It can be established regardless of nature of soil and height of water , and stream of flow exists under the floating structure， there is seldom effect in natural environment. Fuerthermore, it can do. easily to do. assembly and taking to pieces due to expansion or removal. Based on the regulation by class, VLFS have to possess more than enough structural strength against severe wave loading induced by green sea condition Therefore, There are performed structural simulation as well as experimental test about expected loading scenario in order to examine the safety of structure. Up to now, various examinations based on the strength limit value of the main structural material have been done based on the elasticity response analysis. However, there is little finding about the collapse behavior and the safety when the load that exceeds the collapse of the material acts. In the present study, we investigated the collapse behavior based on the ultimate limit state calculated by FE-analysis.

Key Words: Very large marine structure;Structural strength;Collapse;Elastic response;Floating structure; Structural analysis