华中科技大学学报（自然科学版）2024，Vol.52Issue(10)：27-33,7.DOI:10.13245/j.hust.240328
十字形矩形钢管相贯节点平面外抗弯性能研究
Study on out-of-plane flexural behavior of rectangular hollow section cross-type joints
摘要
Abstract
To study the out-of-plane flexural behavior of the rectangular hollow section(RHS)cross-type joints,an experiment of two cross-type joint specimens with medium and large brace-to-chord height ratios(BCHR)under cyclic out-of-plane bending were carried out,and finite element(FE)analysis were also conducted.A generalized yield line model considering the plastic development at both chord surface and chord sidewall was proposed to calculate the out-of-plane flexural capacity of the cross-type joints.Research results show that both two specimens are failed by tearing of the weld and the adjacent chord wall.The flexural capacity and energy dissipation capacity of the specimen with large BCHR are higher than those of the specimen with medium BCHR,while the ductility of the former is slightly lower.The simple yield line model remarkably underestimates the joints flexural capacity by 15%to 30%,and the generalized yield line model overestimates the joints capacity by 15%to 25%.While the average of the two models and the parameterized calculation equation(deduced from the generalized yield line model)can well predict the capacity,most errors are smaller than 10%.关键词
十字形矩形钢管节点/平面外抗弯性能/简单屈服线模型/全屈服线模型/平面外抗弯承载力Key words
rectangular hollow section cross-type joints/out-of-plane flexural behavior/simple yield line model/generalized yield line model/out-of-plane flexural capacity分类
建筑与水利引用本文复制引用
赵必大,钟少祺,林时康..十字形矩形钢管相贯节点平面外抗弯性能研究[J].华中科技大学学报（自然科学版）,2024,52(10):27-33,7.基金项目
浙江省自然科学基金资助项目(LY20E080020). （LY20E080020）
