低压实度工况下分设型中央分隔带波形梁护栏实车足尺试验研究  

Full-scale Crash Test Study on the Split-type Central Median Corrugated Sheet Barrier under Low Compaction Conditions

作　　者：张锋 韦红亮 韦勇克 韦毛山 赵先鹏 ZHANG Feng;WEI Hongliang;WEI Yongke;WEI Maoshan;ZHAO Xianpeng

机构地区：[1]同济大学道路与交通工程教育部重点实验室,上海201804 [2]广西壮族自治区高速公路发展中心,广西南宁541000 [3]广西新发展交通集团有限公司,广西南宁530029 [4]广西交通设计集团有限公司,广西南宁530000 [5]河南建安交通安全科技有限公司,河南许昌461000

出　　处：《上海公路》2025年第1期12-22,M0003,共12页Shanghai Highways

基　　金：广西交通运输标准项目、《高速公路中央分隔带安全护栏设计指南》(2022-35)。

摘　　要：现通过实车足尺碰撞试验,深入探讨了分设型中央分隔带波形梁护栏在低压实度工况下的安全性能及变形特性。通过全场景复现试验,精确模拟了中央分隔带的实际设计与施工条件,全面评估了护栏在阻挡、导向、缓冲及防侵入等方面的性能表现,同时分析了在不同碰撞情境下的护栏与车辆的变形情况。结果表明,采用加密立柱技术的分设型中央分隔带波形梁护栏在低压实度条件下,能够有效满足相关安全标准。通过对比不同的土基压实强度条件,特别是在模拟降雨情况下的试验结果,证明了提高土基压实度能够显著增强基础稳定性,进而提高护栏的整体强度与稳定性,减少变形,并显著提升安全防护性能。这不仅验证了护栏加固方案的有效性,还为安全护栏的研究提供了新思路,并为复杂环境下的道路安全设施的优化设计提供了重要的技术支持。This study investigates the safety performance and deformation characteristics of split-type central median corrugated beam barriers under low compaction conditions through full-scale crash tests.The experiments employed a full-scale scenario replication approach to accurately simulate the actual design and construction conditions of central medians.Comprehensive evaluations were conducted on the barriers'performance in terms of containment,redirection,energy absorption,and anti-intrusion capabilities,alongside analyses of barrier and vehicle deformation under various collision scenarios.Results indicate that barriers using denser post spacing techniques effectively meet safety standards under low compaction conditions.By comparing different soil strength conditions,particularly under simulated rainfall,the study demonstrated that improving soil compaction significantly enhances soil stability,thereby increasing the overall strength and stability of the barriers,reducing deformation,and markedly improving safety performance.This research not only validates the effectiveness of barrier reinforcement schemes but also provides new insights for further studies on safety barriers and offers critical technical support for optimizing road safety installations in complex environments.

关 键 词：中央分隔带 波形梁护栏 立柱加密 实车足尺碰撞试验 安全性能 

分 类 号：U41[交通运输工程—道路与铁道工程]