椭球形气囊防撞性能及影响因素分析  

Analysis of Performance and Influencing Factors of the Ellipsoidal Anti-collision Airbag

作　　者：苏醒 林炜钧 陈威[1] 潘晋[1] 李晓彬[1] SU Xing;LIN Weijun;CHEN Wei;PAN Jin;LI Xiaobin(School of Naval Architecture,Ocean and Energy Power Engineering,Wuhan University of Technology,Wuhan 430063,China)

机构地区：[1]武汉理工大学船海与能源动力工程学院,武汉430063

出　　处：《武汉理工大学学报（交通科学与工程版）》2024年第5期873-877,共5页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：国家自然科学基金(51979213)。

摘　　要：基于气囊优异的缓冲性能,设计了一种椭球形桥墩防船撞气囊,采用LS-DYNA软件分析了该气囊的防护变形以及能量耗散过程.结果表明:在该气囊的防护下,桥墩受力减小了64.66%,撞击作用时程延长了330.95%,气囊以泄气形式耗散的撞击能量达船舶初始动能的61.33%,对船舶与桥墩均具有显著的防护性能,其自身又可泄气恢复初始状态,达到桥墩、船舶、防撞装置的“三不坏”.对该气囊布设过程中影响气囊防护性能的初始内压、排气阈值、以及排气孔面积三个参数进行分析,给出了最佳初始内压区间、最佳排气阈值、以及最佳排气孔面积区间.Based on the excellent cushioning performance of airbag,an ellipsoidal anti-collision airbag for pier was designed,and the protective deformation and energy dissipation process of the airbag were analyzed by LS-DYNA software.The results show that under the protection of the airbag,the stress on the pier is reduced by 64.66%,and the impact time is prolonged by 330.95%.The impact energy dissipated by the airbag in the form of deflation reaches 61.33%of the initial kinetic energy of the ship,which has obvious protective performance for both the ship and the pier,and it can deflate itself to return to the initial state,achieving the“three non-bad”of the pier,the ship and the anti-collision device.The initial internal pressure,exhaust threshold and vent area which affect the airbag protection performance during the airbag deployment are analyzed,and the optimal initial internal pressure interval,optimal exhaust threshold and optimal vent area interval are given.

关 键 词：船桥碰撞 气囊 防撞装置 防护性能 

分 类 号：U443.26[建筑科学—桥梁与隧道工程]