Numerical Analysis on Vehicle Collision onto Guard Fence

车辆碰撞防护栏的数值分析

• 批准号: 11555124
• 负责人: ITOH Yoshito
• 金额: $ 6.78万
• 依托单位: Nagoya University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-11555124/
• 关键词: Guard fence; Vehicle collision; Numerical analysis; Steel; Aluminum alloy; Strain rate effect; Field collision test; Performance-based design; 車両衝突; 鋼製

The performances of the guard fence were prescribed in the new code of the guard fence issued in April 1999 in Japan. In the new code, the full-scale experiment for checking the performances of guard fences is required in the design of the guard fence. However, it is difficult to test the performance of full-scale guard fences in the field for the collision parametric examination because of the enormous time and cost consumption. In this study, the numerical analysis procedures using finite element method for both guard fences and vehicle are dealt with to complement the field experiments. Initially, the materials of steel and aluminum alloy are experimented to obtain the stress-strain relationship considering the strain rate effect, which is used in the numerical analyzes. In the case of steel guard fence, the results of the analyzes considering the strain rate effect agree with the results of the field collision experiment. In the case of aluminum alloy guard fence, the differences of results with and without the stain rate effect configuration are very little.

日本于1999年4月颁布了新的护栏规范，对护栏的性能进行了规定。新规范要求在设计护栏时，必须进行足尺试验，以检验护栏的性能。然而，由于大量的时间和成本消耗，难以在现场测试全尺寸防护栏的性能，以进行碰撞参数检测。在本研究中，使用有限元素法的数值分析程序的护栏和车辆处理，以补充现场实验。首先，对钢和铝合金材料进行了实验，得到了考虑应变率效应的应力应变关系，并将其用于数值分析。在钢护栏的情况下，考虑应变率效应的分析结果与现场碰撞实验结果一致。在铝合金护栏的情况下，有和没有应变率效应配置的结果差异很小。

项目成果

Y.Itoh: "Numerical Analyses on High Capacity Steel Guard Fendes Subjected to Vehicle Collision"Light-Weight Steel and Aluminum Structures ICSAS'99. 53-60 (1999)

Y.Itoh：“对遭受车辆碰撞的高容量钢防护栏的数值分析”轻质钢和铝结构 ICSAS99。

Itoh, Y., Kitagawa, T: "Bridge Lifecycle Analysis and Durability Evaluation Using Accelerated Exposure Test"US-Japan Seminar on Advanced Stability and Seismicity Concept for Performance-based Design of Steel and Composite Structures. 11 (2001)

Itoh, Y., Kitakawa, T：“使用加速暴露试验进行桥梁生命周期分析和耐久性评估”美日研讨会，关于钢结构和复合结构基于性能的设计的先进稳定性和抗震概念。

Y.Itoh: "Nonlinear Collision Analysis of Vehicles on to Bridge Guard Fences"The 7th East Asia-Pacific Conference on Structural Eng. & Const.. 531-536 (1999)

Y.Itoh：“桥梁防护栏上车辆的非线性碰撞分析”第七届东亚太平洋结构工程会议。

Itoh, Y., Liu, C. and Usami, K.: "Nonlinear Collision Analysis of Heavy Trucks onto Steel Highway Guard Fences"Structural Engineering and Mechanics. 12. 541-558 (2001)

Itoh, Y.、Liu, C. 和 Usami, K.：“重型卡车对公路钢质防护围栏的非线性碰撞分析”结构工程与力学。

Itoh, Y., Liu, C., Usami, K.: "Nonlinear Collision Analysis of Heavy Trucks onto Steel Highway Guard Fences"Structural Engineering and Mechanics. 12・5. 541-558 (2001)

Itoh, Y., Liu, C., Usami, K.：“重型卡车与钢制高速公路防护栏的非线性碰撞分析”结构工程与力学 12・5（2001）。