Firstly part of quadratic term of Taylor series is chosen; a low-dimension surface is used to approximatelimit state surface; and the modified reliability formula is derived.
首次选取泰勒级数的部分二次项,用一个距原点最近点处拟合的超低维曲面近似极限状态面。
2
Therefore an algorithm is developed to (approximate) the limit state equation accurately around the true design point through iterative modifications for the design point solution.