Abstract
The beam-column connection plays a key role in the redistribution of internal force, and its behavior has a significant influence on the performance of structures in resisting progressive collapse. In this paper, a finite element model is constructed for a three-storey steel-concrete composite frame, and the influence of the connection stiffness and strength on the anti-collapse behavior of the composite frame is analyzed by means of the dynamic-column-removal method. The results show that(1) the influence of the connection stiffness and strength on the composite effect between the floors in a side span is greater than that on the catenary action in inner spans; (2) the development of the axial force in the beams depends on the connection stiffness, rather than the connection strength; (3) the change of the connection behavior has no influence on the load-carrying independence of each floor; and(4) the improvement in the connection behavior can reduce the demand for the boundary restraint condition during the redistribution of internal force.
| Original language | English |
|---|---|
| Pages (from-to) | 135-142 |
| Number of pages | 8 |
| Journal | Huanan Ligong Daxue Xuebao/Journal of South China University of Technology (Natural Science) |
| Volume | 45 |
| Issue number | 12 |
| DOIs | |
| State | Published - 1 Dec 2017 |
| Externally published | Yes |
Keywords
- Beam-column connection
- Catenary action
- Composite structures
- Dynamic analysis
- Progressive collapse
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