抗裂验算中截面高度影响系数的合理取值研究

Research on rational value of influential factor of sectional height in crack resistance check

根据国内混凝土构件抗裂性能的试验数据 ,采用有理分式插值函数来优化拟合截面高度影响系数与截面高度的关系曲线 ,提出了较为合理的截面高度影响系数随截面高度增大而降低的一条连续曲线 ,且理论计算值与实测值吻合较好 ,可供工程设计和规范修订时参考 .

According to the testing data about crack resistance performance of domestic concrete component, an optimum fitting of a curve of relations between influential factors of sectional height and sectional heights is made by using rational fractional interpolating function. And then a rational continuous curve, which shows that the influential factor is lowering with increasing of sectional height,is given.Moreover, the theoretical calculation values coincide better with measured values. The result may be used for reference in engineering design and code revision.