Theory of multihazards for bridge structures

Abstract

Multihazard consideration for infrastructure applications is gaining popularity due to the anticipated overall cost reduction it offers while maintaining the needed safety levels. This approach considers increasing the complexity of the structural systems to meet the demands of the current environment and takes advantage of the recent developments and innovations in computing, analytical, and sensing technologies. However, at present, no quantitative methods have been developed to fulfill such a promise. This paper discusses the need for multihazards considerations in infrastructure applications and provides a quantitative approach to multihazards considerations. A general theory of multihazards in infrastructure is introduced and applied to structural analysis, design, life cycle costing, risk assessment, and structural health monitoring. In all, groundwork is laid for quantification of multihazards considerations. Utilization/furthering of such quantitative treatment of multihazards theory in these fields will assist in reducing overall costs while maintaining or increasing safety levels.