摘要
以现行的公路水泥混凝土路面设计规范为基础,利用MATLAB进行蒙特卡罗抽样,模拟计算了钢纤维混凝土路面的可靠度,提高了计算效率,并对影响路面可靠度各参数敏感性进行了分析,结果表明:当板厚和混凝土的弯拉强度的变异性较大时,可靠度对两者的变异性较为敏感;钢纤维特征参数的变异系数Cv(λf)对可靠度影响很小,在0.05～0.4范围变化引起路面可靠度变化只有0.5个百分点;当板厚达到20mm左右时,可靠度基本不再随板厚增加而增加。
Based on the specification of cement concrete pavement design for highway, the reliability of steel-fiber-reinforced concrete pavement is calculated with Monte Carlo simulation method by using MATLAB, and the sensitivity of random variables on the reliability is studied. It can be concluded that the reliability is more sensitive to the variation of the slab thickness and flexural strength of the concrete and less to the variation of steel fiber characteristic parameters of C_v(λ_f), and the reliability changes 0.5% while the variation of steel fiber characteristic parameters of C_v(λ_f) fluctuates between 0.05 and 0.4.When the slab thickness increases to 200 mm, the reliability is no more increase.
出处
《安徽理工大学学报（自然科学版）》
CAS
2005年第2期13-17,共5页
Journal of Anhui University of Science and Technology:Natural Science
基金
安徽省优秀青年科技基金资助项目(04043076)
安徽理工大学博士基金(2005YB29)
关键词
钢纤维混凝土
可靠度
蒙特卡罗方法
敏感性分析
Steel fiber reinforced concrete
Reliability
Monte Carlo method
Sensitivity analysis
