摘要
分析滨海混凝土结构耐久性失效概率的演化规律及其影响因素。以DuraCete模型表征氯离子在混凝土的传输规律,基于既有文献提供的模型参数的随机分布及其特征值取值范围,利用蒙特卡罗方法模拟混凝土结构耐久性失效概率。结果表明,结构耐久性失效概率随时间非线性增加;DuraCete模型参数对失效概率的影响程度不同,其中衰减系数对失效概率影响最为显著;各个模型参数的变异性对其具有一定影响,而参数分布类型的影响不显著。
In this paper, the evolution law and its influencing factors of the failure probability of the durability of the coastal concrete structures are studied. Using DuraCete model to characterize the chloride ion in the transmission pattern of concrete, and basing on the random distribution of the model parameters and the range of eigenvalues, the Monte Carlo method is used to simulate the failure probability of structural durability. The results indicate that the failure probability of structural durability will present nonlinear increase with time;the influence of parameters on failure probability of DuraCete model is different, and in all the parameters, the at- tenuation coefficient is the most significant influence on the failure probability. The variability of the parame- ters of each model has a certain impact while the impact of the type of parameter distribution is not significant.
出处
《河南城建学院学报》
CAS
2016年第6期1-6,共6页
Journal of Henan University of Urban Construction
基金
国家自然科学基金(51278303
51520105012)
