Ship Bow Force-Deformation Curves for Ship-Impact Demand of Bridges considering Effect of Pile-Cap Depth
 作者： Wei Fan,  Wancheng Yuan,  Vadim V. Silberschmidt 作者单位： 1Department of Bridge Engineering, College of Civil Engineering, Hunan University, Changsha 410082, China2State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China 刊名： Shock and Vibration, 2014, Vol.2014 来源数据库： Hindawi Journal DOI： 10.1155/2014/201425 原始语种摘要： Since static analysis procedures in the vessel impact-resistant design codes neglect dynamic amplification effects related to bridge mass, ship-impact responses of bridges may be potentially underestimated. For this reason, several dynamic vessel-impact analysis techniques had been recently proposed, where a force-deformation curve was employed to model the vessel bow stiffness. Most of the recent works mainly focused on the force-deformation curves of the barge bows rather than the ship bows. In this paper, a high-resolution finite element model is developed to obtain the ship bow force-deformation curves. The global and local characteristics of the ship bow force-deformation curves are discussed based on the finite element crush analyses between the ship bows and the rigid walls. Effect... of pile-cap depth on the force-deformation curves (rather than only impact forces) is studied in detail, and the corresponding empirical equations are developed using an energy ratio method. Finally, a practical example of ship-bridge collision is investigated to validate the force-deformation curves considering the effect of pile-cap depth. It is found from the case study that the effect of pile-cap depth plays an important role in quantifying structural demand under impact loads. The case study also indicates that the developed equations are reasonable in practical applications.

• force
• bridges　管式桥
• impact　冲击碰撞
• deformation　应变
• dynamic　动力学的
• effect　效应
• developed　开发
• reasonable　合理的
• rather　宁愿
• analysis　分析