By Ioannis Vayas
Combining a theoretical historical past with engineering perform, layout of Steel-Concrete Composite Bridges to Eurocodes covers the conceptual and designated layout of composite bridges according to the Eurocodes. Bridge layout is strongly according to prescriptive normative principles concerning lots and their mixtures, security elements, fabric homes, research tools, required verifications, and different matters which are integrated within the codes. Composite bridges can be designed in response to the Eurocodes, that have lately been followed around the eu Union. This booklet facilities at the new layout principles integrated within the EN-versions of the Eurocodes.
The booklet addresses the layout for a majority of composite bridge superstructures and publications readers in the course of the choice of acceptable structural bridge platforms. It introduces the hundreds on bridges and their mixtures, proposes software program supported research types, and descriptions the necessary verifications for sections and individuals at final and serviceability restrict states, together with fatigue and plate buckling, in addition to seismic layout of the deck and the bearings. It provides the most sorts of universal composite bridges, discusses structural varieties and platforms, and describes initial layout aids and erection tools. It presents details on railway bridges, yet throughout the layout examples makes highway bridges the focal point.
This textual content contains numerous layout examples in the chapters, explores the structural information, summarizes the appropriate layout codes, discusses longevity concerns, offers the homes for structural fabrics, concentrates on modeling for international research, and lays down the foundations for the shear connection. It offers fatigue research and layout, fatigue load types, aspect different types, and fatigue verifications for structural metal, reinforcement, concrete, and shear connectors. It additionally covers structural bearings and dampers, with an emphasis on bolstered elastomeric bearings. The ebook is suitable for structural engineering scholars, bridge designers or practising engineers changing from different codes to Eurocodes.
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Additional resources for Design of Steel-Concrete Composite Bridges to Eurocodes
The selection of a suitable decking is usually made using manufacturers’ design charts or tables. 11 Composite bridge with proile steel sheets as shuttering. In veriication for steel sheeting, the ponding effect has to be taken into account (increased weight of wet concrete due to delection of sheeting). 12. Trusses or telescopic beams attached on the main girders offer the ability of bridging long bays with steel decking of reduced height. However, this is not always a cost-effective solution since connecting and removing the support elements demand numerous man-hours.
Attention must be paid at the inal stage since the torsional rigidity of the main girders may lead to an overloading of the adjacent elements such as cross girders or the deck slab. 20. 5. 20 Local failures due to torsional rigidity. 34 Design of steel–concrete composite bridges to Eurocodes Care should also be taken to avoid local bending of the top lange due to tension of the studs. Such failure can take place when the lange is very thin. A non-negligible part of the torsional moment is expected to be transferred as bending moment to the deck slab.
With this solution, thick slabs do not affect the slenderness of the bridge; this can be important when the available construction depth is highly restricted. Excessive lexural stresses can limit the web’s resistance and lead to local buckling. A situation like this can be critical for non-stiffened thin webs both during construction and in the inal stage. Angle cleats act as longitudinal stiffeners enabling the web to reach an adequate level of strength. An optimum design should obviously ensure full plasticity, but this is not always feasible.
Design of Steel-Concrete Composite Bridges to Eurocodes by Ioannis Vayas