Abstract
Experimental tests and numerical analyses were carried out to study the seismic behavior of semi-rigid partial-strength steel–concrete
composite beam-to-column joints. First, a detailed description of the experimental program and the main results of the experimental tests
were presented. Four full-size sub-assemblages representing exterior composite beam-to-column joints were tested under cyclic loading at the
Laboratory of the Politecnico di Milano. The specimens exhibited large dissipative capacities and very stable and ductile behavior without
significant reduction in strength and stiffness. The hysteretic behavior and the dominant failure modes of the tested sub-assemblages, the
contribution of the column web panel to the overall joint rotations and the mechanisms which may describe the force transfer between concrete
slab and column were analyzed and discussed. Then, finite element models of the tested specimens were developed and numerical analyses were
carried out in order to further investigate the stress state in the composite sub-assemblages and to study the influence of various parameters on the
joint behavior. The influence of the slab contribution, the mechanisms of force transfer in the slab in the connection zone, the effect of the degree
of partial interaction and the stress field existing in the slab for various layout of seismic rebars were studied.
composite beam-to-column joints. First, a detailed description of the experimental program and the main results of the experimental tests
were presented. Four full-size sub-assemblages representing exterior composite beam-to-column joints were tested under cyclic loading at the
Laboratory of the Politecnico di Milano. The specimens exhibited large dissipative capacities and very stable and ductile behavior without
significant reduction in strength and stiffness. The hysteretic behavior and the dominant failure modes of the tested sub-assemblages, the
contribution of the column web panel to the overall joint rotations and the mechanisms which may describe the force transfer between concrete
slab and column were analyzed and discussed. Then, finite element models of the tested specimens were developed and numerical analyses were
carried out in order to further investigate the stress state in the composite sub-assemblages and to study the influence of various parameters on the
joint behavior. The influence of the slab contribution, the mechanisms of force transfer in the slab in the connection zone, the effect of the degree
of partial interaction and the stress field existing in the slab for various layout of seismic rebars were studied.
| Original language | English |
|---|---|
| Pages (from-to) | 23-35 |
| Number of pages | 13 |
| Journal | Journal of Constructional Steel Research |
| Volume | 65 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2009 |
Keywords
- Partial-strength joints
- Cyclic tests
- Partial interaction
- Finite element models
ASJC Scopus subject areas
- Civil and Structural Engineering