基于交通事故重建的行人过街安全岛高度设计  

Design of pedestrian-safety-island height based on traffic accident reconstruction

作　　者：张晨 魏嵬 陈家星 马正伟 ZHANG Chen;WEI Wei;CHEN Jiaxing;MA Zhengwei(College of Urban Transportation and Logistics,Shenzhen Technology University,Shenzhen 518118,China;Laboratory of applied biomechanics,Aix Marseille University and Gustave Eiffel University,Marseille 13015,France)

机构地区：[1]深圳技术大学城市交通与物流学院,深圳518118 [2]应用生物力学实验室,艾克斯-马赛大学和古斯塔沃-埃菲尔大学,马赛13015,法国

出　　处：《汽车安全与节能学报》2024年第2期178-184,共7页Journal of Automotive Safety and Energy

基　　金：国家自然科学基金项目(52002251);广东省普通高校重点领域专项(2023ZDZX3028);广东省普通高校工程技术中心项目(2021GCZX002)。

摘　　要：为了研究道路交通安全岛高度设计对于碰撞事故中行人和车内人员的防护效果,调研并选取典型的安全岛事故案例,运用PC-CRASH软件进行事故过程重建。在事故重建的基础上,基于LSDYNA软件,研究不同车辆碰撞速度、不同安全岛高度对行人和车内人员安全防护的影响。结果表明:安全岛高度过低是导致汽车碰撞安全岛行人伤亡的主要原因。在城市道路的常见车速(30~50 km/h)范围内,350 mm以上的安全岛高度设计可以有效防止车辆驶上安全岛,起到行人保护效果;但车辆3 ms峰值减速度远超72 g,会导致较高的车内人员头部损伤风险。未来安全岛设计应兼顾岛内行人和车内人员的双重防护,可以考虑在提升安全岛高度的同时,通过安全岛外围设计吸能缓冲装置实现对车内人员的安全防护。A typical collision accident between vehicle and safety island was investigated,with reconstructed the accidents by utilizing PC-CRASH to investigate the protective effect of the height design of road traffic safety island on pedestrians and occupants in collision accidents.The influence of different vehicle collision speed and different safety island heights on the safety protection of pedestrians and occupants in the vehicle was analyzed with LS-DYNA based on the accident reconstruction.The results show that too low of the safety island height was the main cause of pedestrian casualties in the collision between vehicle and safety island.In the common speed range(30~50 km/h)of urban roads,the safety island designed with a height of more than 350 mm could effectively prevent the vehicle from driving on the safety island,so as to protect pedestrians.However,the 3-ms peak deceleration of the vehicle is much more than 72 g,which will lead to a high risk of head injury for the occupants of the vehicle.The future safety island design should consider the dual-protection of both pedestrians in the safety island and occupants in the vehicle.Therefore,it should be considered to design energy-absorbing buffer device around the safety island while raising the height of it,so as to better realize the safety protection of occupants in the vehicle through the dual-absorption of both the vehicle and the safety island.

关 键 词：道路交通 安全岛高度 防护 事故重建 有限元仿真 

分 类 号：T416[一般工业技术]