Tag Archive for Tag: Deflections

Tag: Deflections Stresses and deflections in service

A composite beam is usually designed first for ultimate limit states. Its behaviour in service must then be checked. For a simply-supported beam, the most critical serviceability limit state is usually excessive deflection, which can govern the design where unpropped construction us used. Floor structures subjected to dynamic loading (e.g. as in a gymnasium) are also susceptible to excessive vibration (Section 3.11.3.2). Cracking of

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Tag: Deflections Effect of slip on stresses and deflections

Full-interaction and no-interaction elastic analyses are given in Section 2.2 for a composite beam made from two elements of equal size and stiffness. Its cross-section (Fig.2.2(b))can be considered as the transformed section for the steel and concrete beam in Fig .2.16 Partial-interaction analysis of this beam (Appendix A)illustrates well the effect of connector flexibility on interface slip and hence onstresses

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Tag: Deflections Design Considerations

Design considerations for steel railroad bridges differ somewhat from those for highway bridges. Railroad bridges have a higher live-to-dead load ratio because the mass of the railroad loading is generally large, relative to that of the bridge. In case of accidents, rail traffic cannot steer away from damaged bridge components, but highway traffic can frequently be moved to other lanes while repairs are made.

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