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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 5

LIFETIME DEFLECTIONS OF LONG-SPAN BRIDGES UNDER DYNAMIC AND GROWING TRAFFIC LOAD

5.1 INTRODUCTION

Numerous in-service highway bridges have collapsed, or have been damaged over the last few decades, due to overloaded trucks. These damages are mostly resulted from the intense competition in transportation of goods in the global market [1, 2]. A steady traffic growth in the volume and the gross weight may pose a safety hazard to in-service bridges [3]. Even though the design live-load model has a confidence level to ensure the bridge safety in a reference period, such level may be underestimated by the actual traffic loading scenarios composed of several extremely overloaded trucks. For instance, a case study conducted by Han et al. [ ...

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