The objective of this paper is superior grade sports flooring for competition. Through testing the main performance indexes, this reseach is to investigate the property of sports flooring with different keel structural parameters. Orthogonal regression experiments were carried out in order to establish the regression equations between influence factors ( keel siding, keel thickness, keel spacing) and experimental indexes ( force reduction rate Fr, standard vertical deformationVd , ball rebound rate Br) . Through SPSS analysis program it is found that all factors had significant effect on Fr, Vd and Br respectively at significance level of 0. 05 or above. After analyzing the best factor combinations for each index, this paper concludes the comprehensive best combination which is the span keel spacing 500 mm × 500 mm, keel cross section 50 mm × 50 mm. The research fills the blank of regression correlation between keel structure and main performance indexes of sports flooring. The results have important statistical effect on asisiting production procedure of the keel as important component of sports flooring. In theory the regression equations in this research can be applied in asisiting the design of keel structure and field installation technology of sports flooring.%以高等级竞赛用体育木地板为研究对象,采用测定体育木地板主要功能指标的方法,研究不同龙骨参数的体育木地板结构性能,建立体育木地板龙骨结构(截面尺寸、间距)与冲击吸收率(Fr)、标准垂直变形(Vd)和球反弹率(Br)之间的一次回归方程,分析提出较优的龙骨设计参数.结果表明:龙骨参数对试验指标均有显著影响,显著性水平均为0.05及以上,综合分析各功能指标与试验因素水平组合,得出较优的龙骨设计参数为截面尺寸50 mm×50 mm、龙骨间距500 mm ×500 mm.该研究填补体育木地板龙骨结构与主要性能指标间一次回归统计关系的空白,建立的统计方程可在理论统计范畴内指导体育木地板中龙骨结构设计及施工技术,为体育木地板龙骨的生产提供科学依据.
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