Abstract:

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 F_r, standard vertical deformationV_d, ball rebound rate B_r). Through SPSS analysis program it is found that all factors had significant effect on F_r,V_d and B_r 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.

Key words: sports flooring, keel structure, force reduction rate, vertical deformation, ball rebound rate