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Ultimate Load Capacity Analysis of Q690 High-Strength Steel KK-Type Tube–Gusset Plate Connections
| 题名： | Ultimate Load Capacity Analysis of Q690 High-Strength Steel KK-Type Tube–Gusset Plate Connections |
| 正文语种： | 英文 |
| 作者： | Qing Sun1; Songzhao Qu, Ph.D.2; Xiaohong Wu3 |
| 作者单位： | 1Professor, School of Human Settlements and Civil Engineering, Xi’an Jiaotong Univ., Xi’an, Shaanxi 710049, China (corresponding author). 2School of Human Settlements and Civil Engineering, Xi’an JiaotongUniv., Xi’an, Shaanxi 710049, China; School of Civil and Traffic Engineering, Henan Univ. of Urban Construction, Pingdingshan, Henan 467000, China. 3Associate Professor, School of Aerospace, Xi’an Jiaotong Univ., Xi’an, Shaanxi 710049, China. |
| 关键词： | Tube–gusset joints; KK-type; High strength; Ultimate load capacity; Virtual work principle |
| 摘要： | A KK-type tube–gusset plate joint is a typical joint configuration used widely in the tubular structures of transmission towers. The mechanical characteristics of KK-joints, compared with K-joints, are more complex owing to the multiplanar effects in the actual structure. Based on material experiments and tubular K-joint ultimate load capacity experiments of Q690 high-strength steel, a parameter analysis is conducted on KK-type tube–gusset plate connections. Additionally, geometric parameters, axial load of the chord, and other factors that influence the ultimate bearing capacity of multiplanar KK-joints are studied in detail. The analysis indicates that the axial compression load of the chord, chord wall thickness, chord diameter, and loading ratio of the bracing members significantly affect the ultimate load capacity of KK-joints. According to the experimental and finite-element (FE) analysis results, a formula is developed to predict the ultimate load capacity of KK-joints using the virtual work principle. |
| 出版年： | 2019 |
| 期刊名称： | Journal of Structural Engineering |
| 卷： | 145 |
| 期： | 8 |
| 页码： | 1-15 |
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