第一和第三直曲段交界处弧线起跑线的计算原理和方法

The Counting Method and Procedure for Arc Scratch of the First and the Third Straight and Curve Interface

依据《田径竞赛规则》中"应使运动员跑进的距离相等"的规定,本文为了实际应用中操作的精准和方便,对田径场第1和第3直曲段交界处弧线起跑线进行弦量法和放射量法的推导和计算,给出每1步骤的计算过程并计算出我国目前较广泛使用的半径为36m、36.5m、37m、37.898m半圆式田径场地的有关丈量数据。

According to the regulation that the distance which athletes race should be the same in The Track And Field Competition Rules, and in order to make operation more precise and convenient, this thesis uses chord measure method and radiate measure method to deduce and count the arc scratch of the first and the third straight and curve interface, then get the counting formula foe each step and count out the related measurable data about semicircular track and field grounds with semidiameters of 36m, 36.5m, 37m, 37.898m, which is widely used in our country at present.