钢筋砼裂缝截面剪力传递性能的试验研究

Experimental Research on Behavior of Shear Transfer in Cracked Sections of RC Members

本文探讨砼强度（Ｃ２４．８～Ｃ９７．７）和配箍率（ρ＝０．５６～２．２４％）对裂缝截面剪力传递性能的影响。试验中量测了预裂和未预裂试件裂缝截面附近的钢筋应变。通过理论分析和线性回归，给出裂缝截面骨料咬合和销栓作用刚度的计算公式。

In this paper, the influences of concrete strength (C 24.8-97.7)and reinforcement ratio (ρ = 0.56-2.24% ) on the behavior of sheartransfer in cracked section have been studied. Steel strains nearbythe crack in pre-cracked and nonpre - cracked specimens are alsomeasured in the experiments. Through theoretical analysis and linear regression, the stiffness calCulation formulas of aggregate interlock and dowel action in cracked sections have been proposed.