Slab Effects in SMRF Retrofit Connection Tests

Civjan, Scott A.; Engelhardt, Michael D.; Gross, John L.

doi:10.1061/(asce)0733-9445(2001)127:3(230)

Cited by 41 publications

(30 citation statements)

References 6 publications

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“…This beneficial effect of the slab comes from the lateral support and the delaying of local buckling due toe presence of the slab. In fact, according to the references (Civjan et al, [7,8]), the bare steel connections showed some lateral instabilities during the loading stage, probably due to the poor test setup. Nevertheless, since no actual building has bare steel frame alone, this effect is taken for granted.…”

Section: Composite Connection Test: Us Connectionsmentioning

confidence: 93%

“…The tests performed by Civjan et al are modeled (Civjan et al, [7,8]). The original purpose of the test was to find an effective and economic repair method for existing connections.…”

Section: Composite Connection Test: Us Connectionsmentioning

confidence: 99%

“…Table 4. [7,8] For the slab, lightweight concrete was used with metal decking oriented perpendicular to the beam. To represent the partial composite action of existing buildings, location and number of studs are decided and the rate of composite action as defined by the AISC LRFD specification is approximately 18%.…”

Section: Composite Connection Test: Us Connectionsmentioning

confidence: 99%

“…The possible explanation why the detrimental effect of the slab was not seen for the connection with the US detailing will be discussed in the next section. Detailed information about these test results can be found in the references (Civjan et al, [7,8]). …”

Section: Composite Connection Test: Us Connectionsmentioning

confidence: 99%

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Effects of Concrete Slab on Ductility of Steel Moment Connections

Joh¹,

Chen²

2005

Volume 1 Number 1

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Abstract:The effects of slab on the ductility of steel moment connections representing typical Japanese and US details are investigated based on an interpretation of existing composite connection tests and our own numerical analyses. Different seismic behaviors between typical Japanese and US connections are also investigated. The results show that the presence of slab: increases the beam strength, imposes a constraint near the beam top flange, and, as a consequence, induces concentrated deformation near the beam bottom flange, which in turn reduces the ductility of the connection. The total deformation capacity of the connection depends not only on the beam but also on the connecting column and panel zone. The detrimental slab effects and the relative strength between beams, column, and panel zone should be considered in the seismic design of these connections.

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Section: Composite Connection Test: Us Connectionsmentioning

confidence: 93%

“…The tests performed by Civjan et al are modeled (Civjan et al, [7,8]). The original purpose of the test was to find an effective and economic repair method for existing connections.…”

Section: Composite Connection Test: Us Connectionsmentioning

confidence: 99%

Section: Composite Connection Test: Us Connectionsmentioning

confidence: 99%

Section: Composite Connection Test: Us Connectionsmentioning

confidence: 99%

See 2 more Smart Citations

Effects of Concrete Slab on Ductility of Steel Moment Connections

Joh¹,

Chen²

2005

Volume 1 Number 1

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“…Civjan et al [7] tested six specimens under reversed cyclic loading, three of which were composite slab specimens. The main conclusion was that the slab compressive zone at the column flange was wider than the column face, and distributed at approximately 15°to 30°from the column considering the crack patterns.…”

Section: Introductionmentioning

confidence: 99%

Analytical model for composite joints under sagging moment

Bennacer

Béroual

Kriker

et al. 2015

Engineering Structures

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Steel FRC slab in compression in composite steel‐concrete frame joints

Cervenka¹,

Dolejš²

2021

ce papers

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The objective of the research is a steel fiber‐reinforced concrete slab in compression in a composite frame joint. EN 1998‐1 relates only to composite joints with common concrete slab. This standard prescribes two mechanisms: mechanism 1 acts in the concrete slab with a concentrated compressive force on the column flange; mechanism 2 consists of struts and tie model, where concrete struts compress the concave parts of the column cross‐section. By these mechanisms, it is prescribed inaccurate formula for the effective width calculation of a common concrete slab in compression in the nodal zone, as the standard procedure does not consider the contribution of the confinement effect to the resistance of mechanism 1. Mechanism 1 represents a direct bearing of the concrete slab against the column flange. There is a concrete slab in compression confined by transverse reinforcement, slab continuity around the column flange and friction on the column flange. Moreover, some publications describe different inclination of the concrete struts of mechanism 2. The resistance of mechanism 2 significantly depends on this inclination. The aim of this work is to derive a more accurate formula for calculation the effective width of the steel fiber‐reinforced concrete slab in compression in the nodal zone. Experiment with real‐sized isolated composite joint, validation of ATENA numerical models and parametric study of composite joints with fiber‐reinforced concrete slab are the main steps of this research.

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Slab Effects in SMRF Retrofit Connection Tests

Cited by 41 publications

References 6 publications

Effects of Concrete Slab on Ductility of Steel Moment Connections

Effects of Concrete Slab on Ductility of Steel Moment Connections

Analytical model for composite joints under sagging moment

Steel FRC slab in compression in composite steel‐concrete frame joints

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