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浙江大学学报(工学版)
J4  2014, Vol. 48 Issue (2): 249-253    DOI: 10.3785/j.issn.1008-973X.2014.02.010
土木工程     
混凝土结构道路护栏设计计算方法
卫军1, 张萌1, 杨曼娟2, 董荣珍1
1. 中南大学 土木工程学院,湖南 长沙 410075； 2. 交通运输部公路科学研究院,北京 100088
Calculation method for designing concrete structure guardrail
WEI Jun1, ZHANG Meng1, YANG Man-juan2, DONG Rong-zhen1
1. School of Civil Engineering of Central South University, Changsha 410075, China;
2. Highway Science Research Institute of MOC, Beijing 100088, China
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摘要：

为了研究我国混凝土结构道路护栏的设计计算方法,通过研究冲击荷载对混凝土结构护栏的动力作用过程,建立车辆撞击护栏的冲撞模型,获得撞击过程的碰撞力及其分布长度.应用运动学原理导出碰撞力的分布形式为1/4余弦曲线式.基于能量原理,通过建立车辆撞击混凝土护栏板的塑性变形屈服线,确定碰撞作用下混凝土结构道路护栏的抗冲击能力的计算方法.该方法与依据现行美国规范设计方法和我国有关规范方法所得的计算结果对比表明,在同一工况下新方法配筋明显小于另外2方法,计算过程更符合实际碰撞情况,可以为我国制定有关道路护栏设计规范提供技术参考.

 
Abstract:

A design calculation method was established in order to study the concrete structure guardrail. By studying the dynamic action process for concrete structure guardrail under impact loading, the model of the impact between vehicle and guardrail was established to determine centralized collision force size and distribution length. The distribution form was a quarter of cosine curve typed,deduced from the kinematic principle. Based on the energy principle and the plastic deformation yield line of the collision, a new calculation method of the impact resistance about concrete structure guardrail was put forward. Contrasting the quantity of reinforcement among the new method and existing U.S. design method and China related specification method in the same collision condition, the new method is more conform actual situation and has least to reinforcement ratio, so it could be the technical basis for the design specification of road guardrail.
出版日期: 2014-02-01
:  U 447  
基金资助:

公路交通安全技术交通行业重点实验室开放基金课题.
作者简介: 卫军（1957—）,男,教授,博导.从事结构工程的教学科研工作.E-mail: juneweii@126.com
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引用本文:

卫军, 张萌, 杨曼娟, 董荣珍. 混凝土结构道路护栏设计计算方法[J]. J4, 2014, 48(2): 249-253.

WEI Jun, ZHANG Meng, YANG Man-juan, DONG Rong-zhen. Calculation method for designing concrete structure guardrail. J4, 2014, 48(2): 249-253.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2014.02.010    或    http://www.zjujournals.com/eng/CN/Y2014/V48/I2/249

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