双分板式楼梯在冲击荷载作用下的反应

Reaction Analysis of Double Plate Stairs Under the Effect of Impact Load

以双分板式楼梯为例,通过分析其不同位置在承受静荷载和冲击荷载作用下的位移和等效应力研究其在冲击荷载作用下的动态响应。结果表明,其在冲击荷载作用下的动挠度和等效应力都要大于静荷载,其在承受冲击荷载作用时的危险位置为梯段板与梯梁相交部位及荷载施加部位附近。

Taking the double plate stairs as an example, the displacement and equivalent stress un- der the action of static load and impact load are analyzed by analyzing the dynamic response of the stairs under the impact load. The results show that under impact loading, the dynamic deflection and the equivalent stress is higher than the static load and its risk position to withstand the impact loads is the intersect part and nearby of the boards of the ladder and ladder beam.