Experimental and Analytical Study of RHS X-Joints under Axial Compression

Rectangular hollow section;X-joints;High-strength steel;Ultimate strength formula;Full scale test;690

공과대학 건축학과 ;

University:서울대학교 대학원

关键词: Rectangular hollow section;    X-joints;    High-strength steel;    Ultimate strength formula;    Full scale test;    690;   

Others  :  http://s-space.snu.ac.kr/bitstream/10371/141355/1/000000150183.pdf

美国|英语

来源: Seoul National University Open Repository

【 摘 要 】

their strengths were even higher than the EC3 unreduced nominal strength. Significantly different post-elastic joint behavior was observed depending upon the brace to chord width ratio and grade of steels. It was also found that the formulation of sidewall buckling strength in current EC3 is inaccurate (too conservative) and needs to be improved.Although improved strength formula was recently suggested by Becque and Cheng (2016), it is still conservative and inaccurate to evaluate the strength of RHS X-joints fabricated from high-strength steel. A new design formula for RHS X-joint experiencing sidewall buckling was proposed in this thesis. When the new normalized plate slenderness ratio proposed in this study is used in combination with the column curve ;;c” of EC3, the accuracy and consistency in strength predictions were much improved compared to strength formulae currently available.