دانلود کتاب راهنمای ارزیابی جزئیات برای حساسیت به شکستگی ناشی از محدودیت

This guide explains how to evaluate steel bridge details for susceptibility to constraint-induced fracture (CIF). The guide is directly based on a technical report titled “Evaluation of Steel Bridge Details for Susceptibility to Constraint- Induced Fracture,” Report No. FHWA-HIF-21-046, published by the U.S. Department of Transportation (US DOT), Federal Highway Administration (FHWA), in September of 2021. In fact, most of the content of this guide is directly copied from that report, with minor editorial changes made to facilitate formatting and flow of the guide. In addition, direct statements were added regarding when the use of specific problematic details is not recommended. Significant portions of the FHWA report were omitted from this guide for brevity; readers interested in further information on the concepts of ductility and fracture and other background material can read the full FHWA report, which is available for free download from the FHWA website. First-time readers of this guide are encouraged to review Chapters 1, 2, 3, and 4, which provide a general overview of ductility and fracture and a simple procedure for evaluating steel bridge details for susceptibility to CIF. Afterwards, readers can review individual example evaluations in Chapters 5, 6, 7, and 8 as appropriate for their needs. Chapter 9 provides suggestions for mitigating conditions of elevated susceptibility to CIF. Although this guide is based heavily on the above-cited FHWA report, the recommendations in this guide do not in any way reflect the opinions, policy, recommendations, or other statements of the FWHA.