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![Figure 3. Structural decomposition of a long span suspension bridge [2].](profile/Franco-Bontempi/publication/243512797/figure/fig1/AS:298422650327047@1448160913004/Structural-decomposition-of-a-long-span-suspension-bridge-2_Q320.jpg)
Design rules for modern cable suspension bridges are developed using reliability theories inside a general risk management based framework. In this context, optimal structural design must be considered under the presence of uncertainties in loading, geometry and material properties, whereas the deterministic approaches of optimization neglect the e...
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... Absolutely critic it appears the ability to predict the performance required for such structures and the necessity to provide the qualitative and quantitative elements able to support the following decisional processes needed to specifically define such an important structure , including both limit and service behaviors. The performance approach to the structural design is based on the verification of the exact suitability of the structure with respect to fixed requisites (Catallo & Biondini & Bontempi & Frangopol, 2004; Albertini, & Sgambi, & Garavaglia, 2003 ...
There is today a strong interest and general commitment toward the quality of the things that engineering is creating. Generally speaking, quality involves and concerns different aspects of the engineering products, like the aesthetics, the ergonomics, the comfort, the structural serviceability, the structural safety and the durability. From this point of view, quality means, at the end, sustainability in the most general sense. All these aspects should be considered in a modern conceptual design of a bridge structure. The structure should be defined taking into account wide criteria and the critical aspects, which give clarity and coherence to the whole structural design, must be strongly pointed out.
For advanced systems, like long span suspension bridges, it is necessary to set the global design process in the philosophy of the Performance-based design (P.B.D.), rather than in the conventional prescriptive-based design. In this work a performance approach to the design problem is represented dividing the general treatment of this subject in two points: one related to the performance approach applied to the
Messina Strait Bridge, the other related to the modeling phase.
