硅酸盐学报2005，Vol.33Issue(7)：827-831,5.
多孔水泥基混凝土疲劳方程的建立及应用
FORMULATION AND APPLICATION OF FATIGUE EQUATION FOR POROUS CEMENT CONCRETE
摘要
Abstract
Porous concrete, serving as the base of a cement concrete or a bituminous pavement, should withstand the repeated actions of traffic and temperature together with the road surface. Therefore, the fatigue characteristic was considered in pavement stress analysis and structure design. Based on indoor flexural tensile fatigue tests of small beams, through analyzing the probability distribution of the fatigue life, it was proved that the fatigue life of the porous concrete obeys two-parameter Weibull distribution, and two types of fatigue equations were formulated under different stress level and equivalent stress level. The load fatigue stress coefficient used in the load stress calculation for the porous concrete as undersurface of the cement concrete pavement were derived. The tensile strength structure coefficient used in the tensile stress check for the porous concrete as the base of an asphalt pavement, and the axle load conversion model used in pavement structure design was put forward.关键词
道路工程/多孔混凝土/疲劳方程/荷载疲劳应力系数/抗拉强度结构系数/轴载换算模型Key words
road engineering/porous concrete/fatigue equation/load fatigue stress coefficient/tensile strength structure coefficient/axle load conversion model分类
交通工程引用本文复制引用
陈拴发,郑木莲,王秉纲..多孔水泥基混凝土疲劳方程的建立及应用[J].硅酸盐学报,2005,33(7):827-831,5.基金项目
交通部公路工程行业标准制定(200005)资助项目. （200005）
