原文传递
Seismic Response of Block-Out Column-Base Plate Connections under Axial Compression and Flexure
| 题名： | Seismic Response of Block-Out Column-Base Plate Connections under Axial Compression and Flexure |
| 正文语种： | eng |
| 作者： | Ahmad S. Hassan;Arka Maity;Amit M. Kanvinde;Paul W. Richards |
| 作者单位： | Degenkolb Engineers;Univ. of California;Univ. of California;DuraFuse Frames |
| 关键词： | Column-base plate;Moment frames;Steel connections |
| 摘要： | Abstract Exposed column-base connections are commonly overtopped with concrete to provide an even surface with the surrounding floor slab. To facilitate construction, this concrete is poured, after construction of the floor slab, into a blocked out region of the slab in which the column is placed. The result is a shallowly embedded connection that has significantly higher lateral strength and stiffness with respect to the exposed column-base plate connection without the embedment. This has implications for design and, more importantly, seismic performance assessment. Three large-scale experiments are presented to examine the response of such connections. The connections were subjected to combinations of axial compression and cyclic lateral deformation representative of seismic loading. Significant increases in both strength and stiffness (relative to exposed base plate connections) are noted, arising from the block-out concrete resisting the uplift of the base plate. Stable and ductile hysteretic response (similar to exposed column-base plate connections) is also noted. Failure modes include concrete breakout above the base plate and fracture of the anchors. Results from this study are synthesized with results from previous studies on similar connections to propose a strength model, and to evaluate previously proposed models for stiffness. |
| 出版年： | 2024 |
| 期刊名称： | Journal of structural engineering |
| 卷： | 150 |
| 期： | 1 |
| 页码： | 1.1-1.14 |
相关文献
- Experimental Performance of Block-Out Connections at the Base of Steel Moment Frames
- Reliability Analysis and Design Considerations for Exposed Column Base Plate Connections Subjected to Flexure and Axial Compression
- Seismic Performance of Exposed Column-Base Plate Connections with Ductile Anchor Rods
- Seismic Testing and Analysis of Rocking Motions of Japanese Post-and-Beam Construction
- Seismic Performance of Embedded Column Base Connections Subjected to Axial and Lateral Loads
- Column Base Connections for Hollow Steel Sections: Seismic Performance and Strength Models
检索历史
应用推荐
