Prediction of initial stiffness and available rotation capacity of major axis composite flush endplate connections

Ahmed, B.; Nethercot, D.A.

doi:10.1016/s0143-974x(96)00053-3

Cited by 47 publications

(31 citation statements)

References 12 publications

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“…The behaviour of each component can be defined as elastic -plastic or rigid-plastic [5]. In connections subjected to the hogging and sagging bending moment, some components of the joint were subjected to opposite direction loading or posses initial deformability due to earlier state of the loading, what should be taken into account.…”

Section: Initial Stiffness Of the Composite Jointsmentioning

confidence: 99%

Analytical model end plate bolted joint under bending moment and axial force load

Pisarek¹

2015

ZNPRzBiS

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Section: Initial Stiffness Of the Composite Jointsmentioning

confidence: 99%

Analytical model end plate bolted joint under bending moment and axial force load

Pisarek¹

2015

ZNPRzBiS

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“…The behaviour of each component can be defined as elastic -plastic or rigid-plastic [6]. In connections subjected to the hogging and sagging bending moment, some components of the joint were subjected to opposite direction loading or posses' initial deformability due to earlier state of the loading, what should be taken into account.…”

Section: Initial Stiffness Of the Composite Jointmentioning

confidence: 99%

“…However, due to loading of the plate by global prying force, and taking into account slab cracking caused by hogging moment, deformations of the concrete slab must be taken into account in the analytical model. Adopting the formulae given in [6], the coefficient of the stiffness for the concrete slab may be predicted as: Slip in the connection between steel beam and concrete slab, under sagging bending moment, can be accepted identical as for joints under hogging bending moment according to [1], taking into account the character of deformations of the connectors. When failure mode of connectors is elastic, the deformations due to loading in service stage should be allowed.…”

Section: Initial Stiffness Of the Composite Jointmentioning

confidence: 99%

Mechanical Model of Steel-concrete Composite Joint under Sagging Bending Moment

Pisarek

2012

Selected Scientific Papers - Journal of Civil Engineering

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In buildings with steel-concrete composite floors, joints are designed to transmit mainly hogging bending moment. In case of the large horizontal loads due to wind, earthquake or accidental events, sagging bending moments in a joint can also occur. Additionally, large deformations of the structure cause tying and prying effects. In the paper, a mechanical model based on "component method" for evaluation of characteristics of the composite joint is presented. The influence of tying and prying actions on distribution of the internal forces in a joint is also analyzed. The procedure for calculation of the characteristics of the composite joint with bolted endplate connection is elaborated too.

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“…In the model proposed it is assumed that the concrete has negligible tensile strength, and that the reinforcement resists the internal tensile forces generated in the connection under load. A number of authors 182,189,190,191 have suggested that the reinforcement obeys Hooke's law. Hence, the stiffness of the reinforcement, K, -j, at a given temperature may be given by:…”

Section: Flexible End-plate Composite Modelmentioning

confidence: 99%

Behaviour of steel and composite beam-column connections in fire

Al‐Jabri

Lennon

Burgess

et al. 1998

Journal of Constructional Steel Research

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Recent fire tests on the Cardington full-scale test frame and observations from real fires have demonstrated the significance of connections in fire, when they can have beneficial effects on the survival time of the structure. The lack of experimental data on the behaviour of steel and composite connections in fire means that this is insufficiently addressed in current design codes and also limits the effective use of numerical models. However, recent experimental tests on small-scale specimens have shown that it is possible to derive accurately the moment-rotation relationships at elevated temperature and have established the principles by which this could be achieved.In order to extend the scope to include further parameters, five series of tests have been carried out in a portable connection furnace at the Building Research Establishment. The test series includes flush and flexible end-plate bare-steel connections, and flexible end-plate composite connections. The testing procedure and the resulting behaviour are described. The fire test temperature profiles across the connections are detailed and the connection failure mechanisms are discussed. From the test results, moment-rotationtemperature curves for different connection types are derived. The degradation of connection characteristics is compared with that of structural steel. The experimental behaviour is also compared with the results obtained from an existing finite element analysis developed to model connection response in fire conditions. The experimentally derived connection characteristics have been incorporated within a parametric study of a typical sub-frame, to study the effect of connection type, end-plate thickness, concrete strength, load ratio, and connection temperature. Analysis is extended to a three-dimensional sub-frame.The patterns of behaviour observed in the connection tests is compared with that of the connections in the large-scale fire tests on the composite building at BRE's Cardington laboratory.Based on knowledge about the behaviour of connections at elevated temperature, a component-based model is developed for the elevated temperature response for flexible end-plate connections, both as bare-steel and composite. This is based on the response of constitutive parts of connection. The model is easy to use, and capable of modelling the entire non-linear range of connection behaviour. The predicted response is compared with that recorded experimentally.

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Prediction of initial stiffness and available rotation capacity of major axis composite flush endplate connections

Cited by 47 publications

References 12 publications

Analytical model end plate bolted joint under bending moment and axial force load

Analytical model end plate bolted joint under bending moment and axial force load

Mechanical Model of Steel-concrete Composite Joint under Sagging Bending Moment

Behaviour of steel and composite beam-column connections in fire

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