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Development of Improved Bridge Design Provisions for Barge Impact Loading. Final rept.
| 题名： | Development of Improved Bridge Design Provisions for Barge Impact Loading. Final rept. |
| 作者： | Consolazio-G.R.; McVay-M.C. |
| 关键词： | *Bridge-design; *Impact-strength; *Impact-loads; *Barges-.;Collisions-; Bridge-piers; Highway-bridges; Structural-design; Dynamic-structural-analysis; Data-collection; Data-analysis; Crushing-; Deformation-; Finite-element-analysis; Dynamic-analysis; Vessels-; Recommendations-. |
| 摘要： | Current practice with regard to designing bridge structures to resist impact loads associated with barge collisions relies upon the use of the AASHTO bridge design specifications. The AASHTO barge impact design provisions, which employ a static analysis approach, were developed from pendulum impact testing of reduced scale barge models. However, research sponsored by the FDOT, both experimental and analytical in nature, has revealed that both the barge force-deformation relationships employed by AASHTO as well as the use of static analysis should be re-examined. Specifically, FDOT sponsored research has revealed that (1) the geometry of the impacted portion of a bridge pier can affect the magnitude of impact forces that are generated, and (2) substantial dynamic amplifications of pier design forces may arise under certain combinations of bridge configuration, soil condition, and barge impact condition. In the research reported on herein, high-resolution finite element models of jumbo hopper and tanker barges have been developed and analyzed to produce updated barge force-deformation relationships for use in bridge design. Additionally, new dynamic barge-impact analysis procedures - coupled vessel impact analysis (CVIA) and impact response spectrum analysis (IRSA) - have been developed. These procedures account for dynamic amplifications and may be used to quantify internal pier design forces under barge impact loading conditions. |
| 报告类型： | 科技报告 |
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