EXTRADOSED BRIDGES

Behaviour and Design ofEXTRADOSED BRIDGESbyKonstantinos Kris Mermigas

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6 @& G( `/ b) d, O+ A0 ~* b4 `ABSTRACT
The purpose of this thesis is to provide insight into how different geometric parameters such as tower
2 [) N  z- K! E6 E- Theight, girder depth, and pier dimensions influence the structural behaviour, cost, and feasibility of an
extradosed bridge.
A study of 51 extradosed bridges shows the variability in proportions and use of extradosed bridges,
and compares their material quantities and structural characteristics to girder and cable-stayed bridges.
2 D. v& l, a! e6 W! U5 f" N" zThe strategies and factors that must be considered in the design of an extradosed bridge are discussed.
1 s$ k+ v4 b0 T* sTwo cantilever constructed girder bridges, an extradosed bridge with stiff girder, and an extradosed
bridge with stiff tower are designed for a three span bridge with central span of 140 m. The structural
behaviour, materials utilisation, and costs of each bridge are compared. Providing stiffness either in the
. T9 h# ~" o0 P% xgirder or in the piers of an extradosed bridge are both found to be effective stategies that lead to
% K- ?$ x# q/ l3 ]  G- X8 rcompetitive designs.

好书 谢谢分享 可惜有点贵啊

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