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Multi-Scale Reliability and Serviceability Assessment of In-Service Long-Span Bridges by Mohammad Noori, Naiwei Lu

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CHAPTER 4

DYNAMIC RELIABILITY EVALUATION OF THE SERVICEABILITY OF CABLE-SUPPORTED BRIDGES UNDER SITE-SPECIFIC HEAVY TRAFFIC LOADS

4.1 INTRODUCTION

Flexible girders of long-span cable-supported bridges are sensitive to the simultaneous presence of multiple vehicles that is different from short-span bridges. In general, a deflection threshold is specified in a bridge design code to ensure the serviceability of the bridge. For instance, the critical deflection for suspension bridges specified in the MOCAT [1] is L/300, where L is the mid-span length of the bridge. This is defined as the serviceability failure criteria for a bridge while the girder deflection under the traffic load crosses the threshold [2]. In the design phase of a bridge, the stiffness ...

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