Abstract
The paper presents the structural solution to the joisted floor when the timber joist of composite cross‐section and the concrete slab are interconnected via a special semi‐rigid connection and form a timber‐concrete joisted floor composite element. Tensioned bottom flange is formed of a solid timber joist, the web is of oriented strand boards (OSB) and the compressive top flange is of a concrete slab into which a part of the web is let in. Studies were carried out on the “sleeved” connector in this part of the web between OSB and concrete slabs that should increase the stiffness of this connection. Theoretical and experimental researches on inter‐behaviour of connection of the sub‐components of composite timber I beam-concrete were carried out, the obtained results are presented and evaluated.
Highlights
Composite structures [1] have been more and more widely used in building
Timber joist elements of TCC floors are under tensile stresses, while the upper concrete slab is compressed
Structural solutions used for connecting a composite timber I-joist with concrete slab by shear connectors of a certain type (Fig 2a) are presented in [24]
Summary
Composite structures [1] (steel-concrete beams, concrete-filled steel columns, timber-glass blocks etc, including timber-concrete composite, TCC, joisted floors) have been more and more widely used in building. Timber joist elements of TCC floors are under tensile stresses, while the upper concrete slab is compressed. Structural solutions used for connecting a composite timber I-joist with concrete slab by shear connectors of a certain type (Fig 2a) are presented in [24]. In order to achieve better stiffness of the concrete slab and the web joint, the holes are drilled in the embedded part of the web for setting in the connectors of a certain type (Fig 2b). After casting these places by concrete mix, concrete dowels of certain stiffness are formed
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