单板U型滑雪场地的设计研究  

Study on the Design of the Veneer U-Shaped Skifield

作　　者：李茹萍[1] 郭杰[1] 武巧玲[2] LI Ru-ping;GUO Jie;WU Qiao-ling(Department of Physical Education, Tangshan Normal University, Tangshan 063000, China;Physical Education Department,Hebei Normal University, Shijiazhuang 050024, China)

机构地区：[1]唐山师范学院体育系,河北唐山063000 [2]河北师范大学体育学院,河北石家庄050024

出　　处：《唐山师范学院学报》2017年第5期93-95,109,共4页Journal of Tangshan Normal University

基　　金：河北省体育局体育科技研究项目(20151022)

摘　　要：赛场的地面阻力和空气阻力是影响单板U型场地滑雪运动员跳跃的垂直高度和在空中扭转的重要因素。利用受力分析和能量守恒,对这两个因素进行了详细的分析,给出了具体的表达式;在设计新的滑雪场形状时,创造性的提出了半圆台模型和双翼模型,这两个模型在最大的垂直距离和最大的扭转上均比普通的模型较优。在分析普通的两种赛场模型时,有水平道模型比无水平道的模型较好,所以综合考虑这两个优点,可以在半圆台和双翼模型的基础上添加水平道,这样在实际中可能更优。Field of ground resistance and air resistance are the important factors on the jumping vertical height and the air reversefor Veneer u-shaped skiing athletes.The present study gives the concrete expression by analyzing the two factors in detail according tostress analysis and the conservation of energy.When designing new ski slope shape,half a frustum of a cone model and the model ofthe wings are put forward creatively,which are better than normal models respectively in the largest vertical distance and maximumtorsion.The analysis of the two ordinary game models shows the level model is better than the no-level way.In all,it may be better inpractice to add a horizontal way on the basis of the model in half a frustum of a cone and wings.

关 键 词：U型场地 摩擦力 空气阻力 半圆台 

分 类 号：G863.1[文化科学—体育训练]