石米混凝土双向拉伸弱化效应研究
BIAXIAL TENSILE WEAKENING EFFECT OF THE STONY-GRAIN CONCRETE
-
摘要: 通过实验得到,混凝土在双向拉伸下的强度与其在单向拉伸下的强度相比较,会出现很大弱化现象,弱化程度达15%~30%.这对当今大跨度的钢筋混凝土板、壳结构来说,是一个非常重要的课题.Abstract: This paper shows from the experimental data that the concrete′s strength under the biaxial tension is lower than its uniaxial tensile strength. The weakening effect reaches 15%~30%. This is an important problem for the modern large span reinforced concrete plate and shell structure.