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首页> 外文会议>Asia-Pacific Conference on Shock amp; Impact Loads on Structures; 20031112-14; Changsha, Hunan,(CN) >NUMERICAL ANALYSIS ON VEHICLE COLLISION TO FLEXIBLE PRECAST CONCRETE GUARD FENCE
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NUMERICAL ANALYSIS ON VEHICLE COLLISION TO FLEXIBLE PRECAST CONCRETE GUARD FENCE

机译：柔性预应力混凝土围栏车辆碰撞的数值分析

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摘要

A new type of guard fence named Flexible Precast Concrete (FPC) guard fence has been developed in Japan. In this study, FEM models are established for truck and the FPC guard fence to simulate impact behaviors. Firstly, tension tests on the spring steel (SUP9) for the flat-springs are conducted to obtain the stress-strain relationship and the strain rate effect. Secondly, numerical analysis is carried out using the material parameters obtained from the tension tests. The analytical results are compared with the data of full-scale truck collision experiment, and the FEM models for the FPC guard fence are proved to be valid and practical. As a result, effectiveness for evaluating the performances of the FPC guard fence by numerical analysis results is validated. In addition, the analytical results of the FPC guard fence are also compared with that of the normal type of concrete guard fence.
机译：日本已经开发了一种新型的防护栅栏，称为柔性预制混凝土（FPC）防护栅栏。在这项研究中，为卡车和FPC护栏建立了FEM模型，以模拟碰撞行为。首先，对板簧的弹簧钢（SUP9）进行拉伸测试，以获得应力-应变关系和应变率效应。其次，使用从拉伸试验获得的材料参数进行数值分析。将分析结果与全尺寸卡车碰撞实验数据进行了比较，证明了FPC护栏的有限元模型是有效和实用的。结果，验证了通过数值分析结果评估FPC护栏性能的有效性。此外，还将FPC防护网的分析结果与普通类型的混凝土防护网的分析结果进行了比较。

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