CAJ | 학술논문

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。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。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。
교돈방선당장치통상용우감소선당력혹자발전선지사기원리교돈，유효적방당장치대교량화선지안전운행도비상중요。채용 LSDYNA 대일좌오과련속강구교채용적신형부식모능방선당장치적방당성능진행평고。저충신형방선당장치가이기보호교돈우가이보호선지，기결구유모괴화적 FRP 투상조성，투상내부유팔변형 FRP 주각조성，구유초시조개저、시공방편화유수양호성본저등우점。개소료소용 FRP 재료적강도시험，포괄랍신、압축、만곡화전절，병근거강도시험정의료정교각향이성본구모의 FRP 재료。연구표명：해신형방당장치구유비상호적흡능능력，가이현저감소작용재교돈화선지상적당격력。
Bridge physical protection systems are typically used to reduce vessel impact loads to non-destructive levels or to redirect aberrant vessels away from bridge piers.An efficient physical protection system is critical for safe operation of bridges and vessels.Here,a performance evaluation of a new floating fender system used for a five-span pre-stressed concrete bridge was performed by utilizing LS-DYNA.This new floating fender system could protect both bridge piers and vessels.It was composed of FRP box modules filled with rows of FRP tubes with advantages of low initial cost, modular construction /repairing,and low maintenance cost.The vessel-bridge collision analysis was conducted using an orthotropic FRP composite material model defined with the results of strength tests including tension,compression, bending,and shear tests of FRP specimens.It was shown that this new fender system has excellent energy absorbing capabilities and significantly reduces collision forces imposed on bridge piers and colliding vessels.