结构可靠度是在规定的时间和条件下，工程结构完成预定功能的概率，它是工程结构可靠性的概率度量。为了保证结构的安全、适用和经济，在设计时需要进行结构可靠度分析。
最后用结构可靠度分析中的几何法来计算可靠度指标。
Finally, reliability index of the approximation is evaluated by geometric method in structural reliability analysis.
结构可靠度分析的核心是计算预定义功能函数的失效概率。
Structural reliability analyses seek to calculate the failure probability of a predefined performance function.
结果表明，结构最小抗力点可以作为结构可靠度分析的一个关键点。
The feature of the three methods is analyzed. The idea that the minimum resistance time can be taken as a key point for structural reliability analysis is presented.
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