桥墩新型防船撞装置防撞性能研究

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振动与冲击 ›› 2014, Vol. 33 ›› Issue (17) : 154-160.

论文

桥墩新型防船撞装置防撞性能研究

姜华1,耿波2,张锡祥3

作者信息 +

Research on a new Fender system for bridge pier protection against vessel collision

JIANG Hua1, Geng Bo2, ZHANG Xi-xiang3

Author information +

文章历史 +

摘要

桥墩防船撞装置通常用于减小船撞力或者拨转船只使其远离桥墩，有效的防撞装置对桥梁和船只安全运行都非常重要。本文采用LSDYNA对一座五跨连续刚构桥采用的新型浮式耗能防船撞装置的防撞性能进行评估。这种新型防船撞装置可以既保护桥墩又可以保护船只，其结构由模块化的FRP套箱组成，套箱内部由八边形FRP柱壳组成，具有初始造价低、施工方便和维修养护成本低等优点。文中介绍了所用FRP材料的强度试验，包括拉伸、压缩、弯曲和剪切，并根据强度试验定义了正交各向异性本构模拟FRP材料。研究表明：该新型防撞装置具有非常好的吸能能力，可以显著减小作用在桥墩和船只上的撞击力。

Abstract

Bridge physical protection systems are typically used to reduce vessel impact loads to non-destructive levels or redirect aberrant vessels away from bridge piers. An efficient physical protection system is critical for safe operation of bridges and vessels. This paper focus on a performance evaluation of a new Floating Fender system used in a five span pre-stressed concrete bridge, by utilizing LS-DYNA. This new Floating Fender system can protect both bridge piers and vessels, and is composed of FRP box modules filled with rows of FRP tubes. It offers low initial cost, modular construction/repair, and low maintenance benefits. The study includes vessel collision analysis using an orthotropic FRP composite material models determined based on experimental data, including tension, compression, bending, and shear tests of FRP specimens. It is concluded that this new fender system has excellent energy absorbing capabilities and significantly reduces collision forces imposed on the bridge pier and colliding vessel.

导出引用

姜华;耿波;张锡祥. 桥墩新型防船撞装置防撞性能研究[J]. 振动与冲击, 2014, 33(17): 154-160

JIANG Hua;Geng Bo;ZHANG Xi-xiang. Research on a new Fender system for bridge pier protection against vessel collision[J]. Journal of Vibration and Shock, 2014, 33(17): 154-160