基于黏滞阻尼器的防船撞装置防护性能分析  

Protective Performance Analysis for Anti⁃ship Collision Device Based on Viscous Damper

作　　者：何骏 于国军[1] 孟壮 王品端 薛晓玲 HE Jun;YU Guojun;MENG Zhuang;WANG Pinduan;XUE Xiaoling(Faculty of Civil Engineering and Mechanics,Jiangsu University,Zhenjiang Jiangsu 212013,China;Yangzhong Inspection and Testing Center,Zhenjiang Jiangsu 212200,China)

机构地区：[1]江苏大学土木工程与力学学院,江苏镇江212013 [2]扬中市检验检测中心,江苏镇江212200

出　　处：《铁道建筑》2024年第11期90-94,共5页Railway Engineering

基　　金：国家自然科学基金(12372091);江苏省重点研发项目(BE2022162)。

摘　　要：为设计一种安装黏滞阻尼器的防船撞装置并研究其防护性能,参照南京长江第二大桥北汊桥设计图纸,建立有限元碰撞系统模型并采用数值动力计算方法,利用撞击力峰值和碰撞深度评价其防护性能,分析不同抵柱截面形状和黏滞阻尼器数量下防船撞装置的防护性能。结果表明:随着黏滞阻尼器数量的增加,撞击力峰值先减小后增大,而碰撞深度逐渐减小。抵柱截面形状为圆形时,与未安装黏滞阻尼器的防船撞装置相比,安装黏滞阻尼器后撞击力峰值减小了5.90%,并有效减小了0.21 m的防船撞装置碰撞深度。防船撞装置的抵柱截面形状为圆形格构,黏滞阻尼器为2个时防船撞性能最好。In order to design a anti-ship collision device with viscous dampers and study its protection performance,a finite element collision system model was established with reference to the design drawings of the North Branch Bridge of the Nanjing Second Yangtze River Bridge,and numerical dynamic computation methods were used to evaluate its protection performance in terms of the peak impact force and the collision depth.The anti-ship collision performance of the anti-ship collision device was analyzed under different cross-sectional shapes of support columns and different numbers of viscous dampers.The results show that with the increase of the number of viscous dampers,the peak impact force firstly decreases and then increases,and the collision depth gradually decreases.When the cross-sectional shape of the support column is circular,the peak impact force is reduced by 5.90%and the damage of the collision depth of the anti-ship collision device is reduced by 0.21 m compared with the anti-ship collision prevention device without viscous dampers.The best ship impact prevention performance is achieved when the cross-sectional shapes of the support columns of the anti-ship collision device is a circular lattice structure and the number of viscous dampers is two.

关 键 词：预应力混凝土连续箱梁桥 黏滞阻尼器 数值计算 防船撞性能 碰撞系统 

分 类 号：U448.215[建筑科学—桥梁与隧道工程]