其后详细介绍了高度自适应半刚性护栏的设计思想，包括设计初衷，结构形式，工作原理等。
Then the design idea about semi-rigid guardrail with an adaptive height is introduced in detail, including design original intention, structure form and design principle.
分析发现在缆索护栏与汽车的碰撞过程中其大小远小于相同能量的车辆对刚性护栏的碰撞力；
The results reflect the impacting force far less than the car impact to a rigid guardrail with same kinetic energy.
针对高速公路广泛使用的波形梁半刚性护栏建立“护栏—汽车”碰撞体系耦合动力学有限元模型，研究护栏立柱对汽车绊阻效应的形成过程，提出解除护栏立柱对汽车绊阻效应的一种有效方法。
A coupling dynamics FEM model of guardrail and vehicle crashing system is built in this paper in accordance with the W-beam semi-rigid guardrail used widely in express way.
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