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基于混凝土保护层开裂问题的近似解析解和蒙特卡罗算法,确定获得稳定数值结果的最小模拟次数,并获得了与各随机参数相对应的混凝土表面开裂时间的均值和变异系数。基于数值模拟结果,证实了当每个参数都服从正态分布时,混凝土表面开裂时间也是一个正态分布的随机变量。定量评价了保护层厚度均值和变异系数对混凝土表面开裂时间的影响。
Based on the approximate analytic solution and Monte-Carlo algorithm for the cracking of concrete cover, the minimum number of simulations for obtaining stable numerical results is determined and the mean and coefficient of variation of concrete surface cracking time corresponding to each random parameter are obtained. Based on the numerical simulation results, it is confirmed that the cracking time of concrete surface is also a random variable with normal distribution when each parameter obeys normal distribution. The influence of the average thickness of protective layer and coefficient of variation on cracking time of concrete surface was quantitatively evaluated.