关键词: 深井冻结, 井壁设计, C80～C100混凝土, 强度设计值, 强度标准值, 弹性模量

Abstract: ABSTRACT:It is necessary to design and apply the shaft lining structure with high bearing capacity in deep freezing shaft. The cast-in-place high strength concrete is a feasible method to improve the shaft lining bearing capacity.The design and application of concrete lining larger than C80 are lack of corresponding specifications and code.and ;of regulations on the design values of concrete axial compressive strength, tensile strength, elastic modulus and other physical and mechanical parameters, it is of practical significance to study these parameters and their reasonable values in the design of shaft lining structure. Through the comprehensive research on the concrete design code at home and abroad, the research achievements of domestic scholars and the verification test carried out for this study, some suggestions on the design values and characteristic values of C80 ~ C100 axial compressive strength, axial tensile strength, elastic modulus and Poisson's ratio are put forward, it provides a basis for formulating technical specification and forming technical system of applying C80 ~ C100 concrete in shaft lining design by freezing method.