Resistance of composite slabs to sagging bending
The width of slab considered in calculations, b, is usually taken as one metre, but for clarity only a width of […]
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Composite Structures
This volume provides an introduction to the theory and design of composite structures of steel and concrete. Readers are assumed to be familiar with the elastic and plastic theories for bending and shear of cross-section of beams and columns of a single material, such as structural steel, and to have some knowledge of reinforced concrete. No previous knowledge is assumed of the concept of shear connection within a member composed of concrete and structural steel, nor of the use of profiled steel sheeting in composite slabs. Shear connection is covered in depth in Chapter 2 and Appendix A, and the principal types of composite member in Chapter 3, 4 and 5. All material of a fundamental nature that is applicable to both buildings and bridges is included, plus more detailed information and a worked example related to building. Subjects mainly relevant to bridges are covered in Volume 2. These include composite plate and box girders and design for repeated loading.
Resistance of composite slabs to vertical shear
Tests show that resistance to vertical shear is provided mainly by the concrete ribs. For open profiles, their effective width bo
Punching shear
Where a thin composite slab has to be designed to resist point lads (e.g. from a steel wheel of a loaded
Properties of shear connectors
The property of shear connector most relevant to design is the relation-ship between the shear force transmitted, P, and the
Properties of materials
Information on the properties of structural steel, concrete, and reinforcement is readily available. Only that which has particular relevance to
Prediction of fundamental natural frequency
In composite floors that need checking for vibration, damping is sufficiently low for its influence on natural frequencies to be
Partial interaction
In studying the simple composite beam with full interaction (Section 2.2.2), it was assumed that slip was everywhere zero However, the
No shear connection
We assume first that there is no shear connection or friction on the interface AB. The upper beam cannot deflect
Methods of shear connection
Bond Until the use of deformed bars became common, most of the reinforcement for concrete consisted of smooth mild-steel bars.
Methods of analysis and design
The purpose of this section is to provide a preview of the principal methods of analysis used in this volume,