Static Strength of Internally Ring-Stiffened Tubular T-Joints

J. Ocean Eng. Technol. 2004;18(6):70-78.

CHO HYUN-MAN;RYU YEON-SUN;

Civil Department, Busan Newport North Container 2-1, Samsung Engineering and Construction;Department of Ocean Engineering, Pukyong National Univ.;

내부 환보강 T형 관이음부의 정적강도

조현만;류연선;

삼성물산 건설부문 토목사업본부 부산신항 북컨테이너 ²-¹;부경대학교 해양공학과;

Keywords: Tubular Joint, Ring Stiffener, Static Strength, Strength Estimation Formula, Finite Element Analysis

핵심용어: 광이음부, 환보강재, 정적강도, 강도산정식, 유한요소해석

Abstract

In order to increase the load carrying capacity of tubular structures, the joints of tubular members are usually reinforced with various reinforcement system. A stiffening method with internal ring stiffeners is effectively used for the steel tubular joint with a large diameter. In this study, the behavior of internally ring-stiffened tubular T-joints subjected to axial loading is assessed. For the parametric study, nonlinear finite element analyses are used to compute the static strength on non-stiffened and ring-stiffened T-joints. Based on the numerical results, an internal ring stiffener is found to be efficient in improving the static strength. The influence of geometric parameters has been determined, and the reinforcement effect are evaluated. Based on the FE results, regression analises are performed considering the practical size of ring stiffener. Finally strength estimation formulas for ring-stiffened tubular T-joints are proposed.