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Abstract

New Jersey safety barriers are the most commonly used form of guardrails in highway median separators due to their excellent safety protection.In response to the cost reduction and quality improvement，efficient and rapid preparation process，and quality issues of New Jersey precast concrete safety barriers，this article adopted the automation production process of New Jersey precast safety barriers，optimized concrete mix proportion for precast safety barriers，and studied their performance.The experimental results show that in the designed C 30 concrete，the compressive strength of the concrete mixed with 15% fly ash reaches 39.2 MPa，and th e slump reaches 185 mm.The concrete performance meets the requirements of the fabric.Compared with the compressive strength of concrete formed by traditional vibrating rods and integral vibrating tables，the compressive strength of concrete formed by integral vibrating tables at all ages is higher than that formed by vibrating rods，and the coefficient of variation is smaller.The concrete formed by the integral vibrating table has a smaller electrical flux at each age and better resistance to chloride ion penetration.Adjusting fly ash dosage to optimize the concrete mix proportion and applying integral vibrating compaction technology reduce concrete porosity and pore size，improve the compressive strength and durability of concrete，and efficiently and economically obtain concrete that meets the high-performance requirements of guardrails.

Publication Date

12-17-2024

DOI

10.14048/j.issn.1671-2579.2024.06.014

First Page

134

Last Page

140

Submission Date

February 2025

Reference

[1]刘新萍 ,张世辉 ,尚钟平 ,等.高速公路旧桥桥梁护栏提升发展研究 [J].中外公路 ,2024 ,44(2):260-266.LIU Xinping ,ZHANG Shihui ,SHANG Zhongping ,et al .Guardrail improvement for old bridges in expressways [J].Journal of China & Foreign Highway ,2024 ,44(2):260-266.
[2]靳文舟 ,姚尹杰 .多因素耦合作用下的车辆群事故伤害程度估计 [J].郑州大学学报 (工学版 ),2021 ,42(3):1-7.JIN Wenzhou ,YAO Yinjie .Estimation of accident injury severity of vehicle groups considering multi-factor coupling [J]. Journal of Zhengzhou University (Engineering Science ),2021 ,42(3):1-7.
[3]王建宏 .高等级公路护栏设计 [J].交通世界 ,2020 (28):53-54.WANG Jianhong .Design of guardrail for high-grade highway [J].TranspoWorld ,2020 (28):53-54.
[4]薛超 .公路安全防护设施的设置及优化措施分析 [J].交通世界 ,2019 (增刊 2):32-33.XUE Chao .Analysis on the setting and optimization measures of highway safety protection facilities [J].TranspoWorld ,2019 (sup 2):32-33.
[5]李思学 .中央分隔带 SAm级活动护栏防撞能力分析与开发研究 [D].天津 :河北工业大学 ,2020 .LI Sixue .Analysis and development of anti-collision ability of SAm-class movable guardrail in central separation zone [D].Tianjin :Hebei University of Technology ,2020 .
[6]陈鹏 ,雷正保 .基于拓扑优化超高性能混凝土护栏多目标稳健性设计 [J].机械强度 ,2023 ,45(6):1371 -1379 .CHEN Peng ,LEI Zhengbao .Multi-objective robust design of ultra-high performance concrete guardrail based on topology optimization [J].Journal of Mechanical Strength ,2023 ,45(6):1371 -1379 .
[7]龚洁 ,王学光 .成乐高速新泽西护栏优化设计 [J].建材与装饰 ,2021 ,17(27):147-148.GONG Jie ,WANG Xueguang .Optimal design of new jersey guardrail on chengle expressway [J].Construction Materials & Decoration ,2021 ,17(27):147-148.
[8]孙胜江 ,朱长华 ,梅葵花 .玄武岩纤维复合材料梁 ‒柱式护栏防撞性能 [J].振动与冲击 ,2019 ,38(21):265-270.SUN Shengjiang ,ZHU Changhua ,MEI Kuihua .Anti-collision performance of basalt fiber composite beam-column guardrails [J].Journal of Vibration and Shock ,2019 ,38(21):265-270.
[9]徐耀赐 .混凝土护栏的主要型式 、设计原理以及影响阻拦功能的因素 [J].汽车与安全 ,2021 (4):102-107.XU Yaoci .The main types ,design principles ,and factors affecting the blocking function of concrete guardrails [J].Auto & Safety ,2021 (4):102-107.
[10]秦智 .高性能清水混凝土在新泽西护栏的应用 [J].交通世界（建养 .机械）,2013 (10):107-109.QIN Zhi .Application of high performance fair-faced concrete in new jersey guardrail [J].TranspoWorld ,2013(10):107-109.
[11]MOHAMMED H J ,ZAIN M F M .Simulation assessment and theoretical verification of a new design for portable concrete barriers [J].KSCE Journal of Civil Engineering ,2017 ,21(3):851-862.
[12]KONRÁD P ,MÁRA M ,FORNŮSEK J ,et al .Mobile anti-vehicle barrier made of high-performance fibre-reinforced concrete [J].Advances in Structural Engineering ,2021 ,24(11):2364 -2374 .
[13]刘家宝 ,王立权 ,刘彦彦 ,等.利用抛填骨料工艺提升混凝土护栏抗盐冻性能效果分析 [J].材料导报 ,2023 ,37(增刊 1):186-189.LIU Jiabao ,WANG Liquan ,LIU Yanyan ,et al .Analysis on the effect of improving the frost resistance of concrete guardrail by throwing and filling aggregate technology [J].Materials Reports ,2023 ,37(sup 1):186-189.
[14]耿斌斌 ,彭斌 ,乔建刚 .基于 LS-DYNA 仿真的橡胶混凝土护栏碰撞效果研究 [J].交通世界 ,2022 (31):14-17.GENG Binbin ,PENG Bin ,QIAO Jiangang .Study on collision effect of rubber concrete guardrail based on LS-DYNA simulation [J].TranspoWorld ,2022 (31):14-17.
[15]陈捷 .新泽西护栏滑模混凝土配合比设计和应用探索[J].广东交通职业技术学院学报 ,2019 ,18(1):5-9,13.CHEN Jie .Mix design and application of the concrete used in guardrail with slipform construction [J].Journal of Guangdong Communication Polytechnic ,2019 ,18(1):5-9,13.
[16]汪志勇 ,甘树兵 ,王胜 .SAm级中央分隔带波形梁新型护栏碰撞研究 [J].中外公路 ,2023 ,43(5):267-272.WANG Zhiyong ,GAN Shubing ,WANG Sheng .Crash study of new type of guardrail with wave girders in central Median of SAm class [J].Journal of China & Foreign Highway ,2023 ,43(5):267-272.
[17]龚帅 .混凝土护栏坡面参数对防护车辆撞击作用的影响[J].中外公路 ,2024 ,44(2):243-251.GONG Shuai .Influence of concrete barrier slope parameters on protective effect against vehicle collision [J].Journal of China & Foreign Highway ,2024 ,44(2):243-251.
[18]交通运输部公路科学研究院 .公路工程水泥及水泥混凝土试验规程 :JTG 3420—2020 [S].北京 :人民交通出版社股份有限公司 ,2020 .Highway Science Research Institute of the Ministry of Transport .Testing methods of cement and concrete for highway engineering :JTG 3420—2020 [S].Beijing :China Communications Press Co ., Ltd.,2020 .
[19]孙丛涛 .基于氯离子侵蚀的混凝土耐久性与寿命预测研究[D].西安 :西安建筑科技大学 ,2011 .SUN Congtao .Study on durability and life prediction of concrete based on chloride ion erosion [D].Xi’an:Xi’an University of Architecture and Technology ,2011 .
[20]MANGAT P S ，ELGARF M S .Flexural strength of concrete beams with corroding reinforcement [J].ACI Structural Journal ,1999 ,96(1):149-158.

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