摘要
本文首先将考虑系统不确定性的可靠度问题归结为P_x=∫_xP_f(X)f(X)d(X)的积分形式,然后提出了求解该积分的一个推广的一次二阶矩方法。该方法方便实用,具有较高的精度,可以用于时变荷载下考虑系统参数不确定性的可靠度分析以及一般的考虑系统不确定性的可靠度分析。最后给出了应用的实际算例并讨论了系统不确定性对可靠度的影响。
An advanced first order second moment method for solving the integration PF=∫x Pf(X)f(X)dX is proposed in this paper. It can be used in the time-variant reliability problem considering uncertainties of system parameters or the general reliability problems considering system uncertainties. Two examples using the proposed method are given and the effect of parameter uncertainties on reliability is discussed. It has been proved that the proposed method has advantages both in computing efficiency and precision.
出处
《地震工程与工程振动》
CSCD
北大核心
1992年第4期49-57,共9页
Earthquake Engineering and Engineering Dynamics
基金
地震科学联合基金
