桥墩复合材料柔性防撞护舷试验  

Experimental on composite flexible anti⁃collision fender of bridge pier

作　　者：郑植 袁佩[1] 金轩慧 魏思斯 耿波[1] ZHENG Zhi;YUAN Pei;JIN Xuan-hui;WEI Si-si;GENG Bo(National Key Laboratory of Structural Dynamics of Bridge Engineering,China Merchants Chongqing Communications Technology Research and Design Institute Co.,Ltd.,Chongqing 400067,China;School of Civil Engineering,Chongqing University,Chongqing 400045,China;China Academy of Building Research Co.,Ltd.,Beijing 100029,China)

机构地区：[1]招商局重庆交通科研设计院有限公司桥梁工程结构动力学国家重点实验室,重庆400067 [2]重庆大学土木工程学院,重庆400045 [3]中国建筑科学研究院有限公司,北京100029

出　　处：《吉林大学学报（工学版）》2023年第9期2581-2590,共10页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家重点研发计划项目(2017YFC0806000);重庆市自然科学基金项目(CSTB2022NSCQ-MSX1658).

摘　　要：针对既有防护结构不能实现多目标船型柔性防护的问题,提出了一种可防护中小型船舶的柔性护舷,该护舷可与既有防护结构搭配使用。对3种不同护舷开展了准静态压缩试验,确定了最优构造形式,通过足尺冲击试验和数值模拟对最优构造护舷的防护性能进行分析。结果表明:压缩试验下,不同试件的破坏模式相近,均出现外面板剪断,基体开裂,剪断处纤维断裂;压缩结束各试件回弹率高达85%以上;添加耗能芯材的试件3是最优构造形式。落锤冲击试验下,撞击力折减率达到97%,撞后护舷变形完全恢复,护舷以弹性耗能的方式耗散能量;驳船撞击下,护舷吸收了63%的碰撞能量,且能大幅减轻船舶损伤,此时护舷主要以耗能芯材的压溃吸收碰撞能量。Aiming at the problem that the existing protective structure can not achieve multi-objective shiptype flexible protection,a flexible fender which can protect small and medium-sized ships is proposed.The fender can be used with the existing protective structure.To determine the optimal form,the quasi-static compression tests of three different flexible fenders are carried out.And the protective performance of the optimal structural fender is analyzed through full scale impact test and numerical simulation.The results indicate that the failure modes of different specimens are similar under compression test.The outer plate shear failure,matrix cracking and fiber fracture occurred in all specimens.At the end of compression,the springback rate of each specimen was as high as 85%.Specimen 3 with energy dissipation core material is the optimal structure. For the drop weight impact test, the reduction rate of impact force reaches 97%.Fender deformation recovers completely after impact, and fender dissipates energy in the form of elastic energy dissipation.Under barge impact, the fender absorbs 63% of the collision energy and greatly reduces ship damage.In this condition, the fender mainly absorbs the collision energy with the collapse of the energy dissipating core material.

关 键 词：交通运输系统工程 复合材料 柔性护舷 压缩试验 冲击试验 数值模拟 

分 类 号：U417.1[交通运输工程—道路与铁道工程]