Underwater structure will be damaged in different degree in this kind of particular environment. Among these defections, the crack is the important factor to evaluate the reliability of structures.
水下结构物在水下这种特殊的环境中会受到不同程度的损伤，其中裂缝缺陷是评估结构物安全可靠性的重要因素。
Analyzing degree of reliability when frame structure suffer earthquake effect, we can figure out its reliability vector and compare with traditional degree of reliability analytical method.
对框架结构体系遭受地震作用时的可靠度进行分析，计算出它的可靠性向量，并与传统的可靠度分析法作比较。
A practicable calculation method of the stability reliability degree of the tunnel structure was established.
由此构成了该类隧道结构稳定可靠性估计的完整方法。
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