Behaviour and Design ofEXTRADOSED BRIDGESbyKonstantinos Kris Mermigas) I' m( P% k3 b+ r1 j2 d, N5 M
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, ^' a; Z+ n4 P3 l, y) jABSTRACT2 h5 p6 |4 e- `, N
The purpose of this thesis is to provide insight into how different geometric parameters such as tower
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1 _ l( Z6 j. Q2 ~+ O: LA study of 51 extradosed bridges shows the variability in proportions and use of extradosed bridges,
, _: r; M; A/ n }* @' band compares their material quantities and structural characteristics to girder and cable-stayed bridges.
( I$ c0 N9 c& G: T# t6 sThe strategies and factors that must be considered in the design of an extradosed bridge are discussed.
. w; `5 L: h2 C9 q) W$ u0 w& u( `Two cantilever constructed girder bridges, an extradosed bridge with stiff girder, and an extradosed5 o* w* @* b- J Q
bridge with stiff tower are designed for a three span bridge with central span of 140 m. The structural( X; Y( {- |# O3 D8 y1 f( Z' M) G! E
behaviour, materials utilisation, and costs of each bridge are compared. Providing stiffness either in the
5 y Y. h5 c( ]girder or in the piers of an extradosed bridge are both found to be effective stategies that lead to8 W3 [# p( H0 z0 r3 Q$ z# C( _
competitive designs.4 u! c; P6 a+ i
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